Magnetic refrigeration heat exchange device, system and control method thereof
阅读说明：本技术 一种磁制冷换热装置、系统及其控制方法 (Magnetic refrigeration heat exchange device, system and control method thereof ) 是由 王晶晶 唐林强 刘德昌 胡灿 于 2018-06-13 设计创作，主要内容包括：本发明公开了一种磁制冷换热装置,包括：磁工质床、磁体、换热腔、冷媒管和驱动器；磁工质床为圆环形中空筒体,磁工质填充在筒体中；磁体分别固定在以磁工质床轴心为圆心的多个扇面区域中,基于磁体形成的励磁区和退磁区相间分布,每个励磁区和退磁区中分别设置有相互独立的换热腔,换热腔为包围磁工质床部分区域的中空腔体,磁工质床与换热腔相互贴近但不接触,每个换热腔设置有独立的冷媒管,驱动器与磁工质床连接,并驱动磁工质床以其圆环形的中轴为轴心旋转。本发明还提供了一种磁制冷换热系统,及磁制冷换热装置的控制方法。本发明中磁工质持续性的与冷媒带换热,提高了热交换效率。(The invention discloses a magnetic refrigeration heat exchange device, which comprises: the magnetic medium bed, the magnet, the heat exchange cavity, the refrigerant pipe and the driver; the magnetic working medium bed is a circular hollow cylinder, and the magnetic working medium is filled in the cylinder; the magnetic body is respectively fixed in a plurality of sector areas with the axis of the magnetic work bed as the center of a circle, excitation areas and demagnetization areas formed on the basis of the magnetic body are distributed alternately, mutually independent heat exchange cavities are respectively arranged in each excitation area and each demagnetization area, each heat exchange cavity is a hollow cavity body surrounding partial areas of the magnetic work bed, the magnetic work bed and the heat exchange cavities are close to each other but not in contact, each heat exchange cavity is provided with an independent refrigerant pipe, and a driver is connected with the magnetic work bed and drives the magnetic work bed to rotate by taking the annular central shaft of the magnetic work bed as the axis. The invention also provides a magnetic refrigeration heat exchange system and a control method of the magnetic refrigeration heat exchange device. The magnetic working medium continuously exchanges heat with the refrigerant band, and the heat exchange efficiency is improved.)
1. A magnetic refrigeration heat exchange apparatus, comprising: the magnetic medium bed, the magnet, the heat exchange cavity, the refrigerant pipe and the driver;
the magnetic working medium bed is a circular hollow cylinder, and the magnetic working medium is filled in the cylinder; the magnet is fixed respectively in a plurality of sector areas that use magnetic media bed axle center as the centre of a circle, based on excitation district and the alternate distribution in demagnetization district that the magnet formed, are provided with mutually independent heat transfer chamber in every excitation district and the demagnetization district respectively, the heat transfer chamber is the cavity that surrounds magnetic media bed subregion, and magnetic media bed and heat transfer chamber are pressed close to each other but contactless, and every heat transfer chamber is provided with independent refrigerant pipe, the driver is connected with magnetic media bed to it is rotatory as the axle center with its annular axis of circle to drive magnetic media bed.
2. The magnetic refrigeration heat exchange apparatus of claim 1 wherein the heat exchange cavities are uniformly distributed and fixed along the circle of the magnetic media bed.
3. The magnetic refrigeration heat exchange device according to claim 1, wherein the heat exchange chambers include a first refrigeration heat exchange chamber, a first heating heat exchange chamber, a second refrigeration heat exchange chamber, and a second heating heat exchange chamber, the first refrigeration heat exchange chamber and the second refrigeration heat exchange chamber are respectively fixed to two excitation areas that are centrosymmetric with respect to the axis of the magnetic work bed, and the first heating heat exchange chamber and the second heating heat exchange chamber are respectively fixed to two demagnetization areas that are centrosymmetric with respect to the axis of the magnetic work bed.
4. The magnetic refrigeration heat exchange apparatus of claim 1 wherein the heat exchange chamber is provided with a plurality of volumetric specifications.
5. The magnetic refrigeration heat exchange device according to claim 1, wherein a plurality of compartments are uniformly distributed in the hollow cylinder of the magnetic working medium bed, and the magnetic working medium is uniformly filled in each compartment.
6. The magnetic refrigeration heat exchange apparatus of claim 1 wherein the magnets of each field region are a magnet assembly formed by first and second oppositely disposed magnets affixed to either side of the magnetic media bed.
7. A magnetic refrigeration heat exchange system, comprising: the magnetic refrigeration heat exchange device, the refrigerant pipeline and the heat exchanger as claimed in any one of claims 1 to 6; the refrigerant pipeline is respectively connected with the magnetic refrigeration heat exchange device and the heat exchanger to form a circulation loop;
the heat exchanger comprises a refrigerating heat exchanger and a heating heat exchanger; the refrigeration heat exchanger is respectively communicated with each refrigeration heat exchange cavity of the magnetic refrigeration heat exchange device through corresponding refrigeration refrigerant pipes, and forms a refrigeration circulation pipeline; the heating heat exchangers are respectively communicated with each heating heat exchange cavity of the magnetic refrigeration heat exchange device through corresponding heating refrigerant pipes, and a heating circulation pipeline is formed.
8. The magnetic refrigeration heat exchange system according to claim 7, wherein a refrigeration control valve for controlling the communication state of each refrigerant pipe is disposed in the refrigeration cycle pipe, and a heating control valve for controlling the communication state of each refrigerant pipe is disposed in the heating cycle pipe.
9. The magnetic refrigeration heat exchange system of claim 8, wherein the heat exchanger is a self-cleaning heat exchanger comprising a plurality of spaced heat exchange tubes with air flow passages formed between adjacent heat exchange tubes, and further comprising:
at least one set of limiting members, each set of limiting members limits two or more adjacent heat exchange tubes and the airflow channel between the adjacent heat exchange tubes into a cleaning space, and the limiting members can be used for allowing the airflow flowing through the cleaning space to pass through;
the cleaning piece, one or more cleaning pieces are restricted in the clean space, and the cleaning piece can be moved in the restricted space by the air current.
10. A control method of a magnetic refrigeration heat exchange system is characterized in that refrigeration and heating are controlled by controlling the type of a heat exchange cavity communicated with a refrigerant pipe of a magnetic refrigeration heat exchange device, and meanwhile, the number of the refrigerant pipes communicated with a refrigeration heat exchanger or a heating heat exchanger is adjusted by a control valve so as to adjust the heat exchange efficiency of the refrigeration or the heating.
Technical Field
The invention relates to the technical field of magnetic refrigeration heat exchange, in particular to a heat exchange device and system utilizing a magnetic refrigeration technology and a control method thereof.
Background
In the existing magnetic refrigeration system, the magnetic working medium is excited and demagnetized alternately due to the movement of the magnet, so that heat and cold are generated alternately, and in order to exchange heat between the generated cold and heat respectively as required, a control valve is required to be arranged on a refrigerant pipe passing through the magnetic working medium, and the switching of refrigerant pipelines is controlled, so that the heat/cold is output to the corresponding heat exchanger alternately. In the current magnetic refrigeration system, the complexity of the system is increased because a valve for controlling the switching of refrigerant pipelines must be arranged, and a large amount of noise is generated by frequently switching the pipelines. Meanwhile, the refrigerant pipes for communicating the refrigerating system and the heating system alternately pass through the same magnetic working medium area, so that much heat/cold energy is consumed, and the energy consumption is increased. In addition, the refrigerant can only pass through alternately, so that the heat exchange can not be continuously carried out, and the efficiency is influenced due to pause in the process.
Disclosure of Invention
In view of the above-mentioned drawbacks in the prior art, embodiments of the present invention provide a magnetic refrigeration heat exchanger. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
According to a first aspect of the embodiments of the present invention, there is provided a magnetic refrigeration heat exchange device, including: the magnetic medium bed, the magnet, the heat exchange cavity, the refrigerant pipe and the driver;
the magnetic working medium bed is a circular hollow cylinder, and the magnetic working medium is filled in the cylinder; the magnet is fixed respectively in a plurality of sector areas that use magnetic media bed axle center as the centre of a circle, based on excitation district and the alternate distribution in demagnetization district that the magnet formed, are provided with mutually independent heat transfer chamber in every excitation district and the demagnetization district respectively, the heat transfer chamber is the cavity that surrounds magnetic media bed subregion, and magnetic media bed and heat transfer chamber are pressed close to each other but contactless, and every heat transfer chamber is provided with independent refrigerant pipe, the driver is connected with magnetic media bed to it is rotatory as the axle center with its annular axis of circle to drive magnetic media bed.
The technical scheme is that a magnet is static, a magnetic working medium rotates relative to the magnet, an area of a magnetic working medium bed close to the magnet is an excitation area, an area of the magnetic working medium bed far away from the magnet is a demagnetization area, a pipeline is arranged, a refrigerant is arranged in the pipeline, and the refrigerant can continuously flow through the pipeline in a circulating manner to enter a heat exchange cavity to exchange heat with the magnetic working medium in the excitation area, so that the released cold energy is taken away, and the refrigeration effect is realized; the heat exchange cavity can be arranged in the demagnetization area, and heat released by the magnetic medium in the demagnetization area is taken away, so that the heating effect is realized. Therefore, the flow of the refrigerant is not required to be controlled by arranging the valve body, and the cold quantity or the heat quantity released by the magnetic working medium can be continuously taken away by the refrigerant, so that the defects of pause, alternation and the like in the conventional magnetic refrigeration system are overcome, and the heat exchange efficiency is improved. In the refrigeration pipeline or the heating pipeline, the refrigerant can respectively carry out continuous heat exchange in the corresponding heat exchange cavities, so that the heat exchange efficiency is improved, and the energy consumption of the system is effectively reduced.
In one embodiment according to the invention, the heat exchange chambers are uniformly distributed and fixed along the circular ring of the magnetic media bed. The space utilization rate of the excitation area and the demagnetization area of the ring can be improved by uniformly distributing and fixing the heat exchange cavities.
In one embodiment according to the present invention, the heat exchange chambers include a first cooling heat exchange chamber, a first heating heat exchange chamber, a second cooling heat exchange chamber, and a second heating heat exchange chamber, the first cooling heat exchange chamber and the second cooling heat exchange chamber are respectively fixed in two excitation areas that are centrosymmetric with respect to the axis of the magnetic work bed, and the first heating heat exchange chamber and the second heating heat exchange chamber are respectively fixed in two demagnetization areas that are centrosymmetric with respect to the axis of the magnetic work bed.
In one embodiment according to the present invention, the magnets are first and second oppositely disposed magnets that are secured to either side of the magnetic media bed. The excitation effect can be effectively improved by arranging the magnets oppositely. In practice, the magnets may be arranged in a radial direction of the magnetic work mass bed, for example, the first magnet may be disposed outside the circular ring of the magnetic work mass bed and the second magnet may be disposed inside the circular ring of the magnetic work mass bed; the magnets can also be arranged along the axial direction of the magnetic work mass bed, namely the first magnet and the second magnet are respectively arranged at two sides of the circular ring surface of the magnetic work mass bed.
In one embodiment of the invention, a plurality of compartments are uniformly distributed in the hollow cylinder of the magnetic working medium bed, and the magnetic working medium is uniformly filled in each compartment. The heat loss between the magnetic working media can be reduced by arranging the chambers, the utilization rate of the heat can be improved, and the energy consumption is reduced.
In one embodiment according to the invention, the heat exchange chamber is provided with a plurality of volume specifications. The heat exchange cavities with various volume specifications have different heat exchange efficiencies, so that the requirements of refrigeration or heating under different scenes can be met by switching and matching among different heat exchange cavities.
Furthermore, arc-shaped grooves and convex blocks are arranged on the surface of the magnetic work mass bed along the circular ring, and the corresponding convex blocks and the corresponding grooves are arranged on the surface of the heat exchange cavity facing the magnetic work mass bed, so that the specific surface area can be increased, and the heat exchange efficiency is improved.
The invention also provides a magnetic refrigeration heat exchange system, which comprises: the refrigeration heat exchange device, the refrigerant pipeline and the heat exchanger;
the refrigerant pipeline is respectively connected with the magnetic refrigeration heat exchange device and the heat exchanger to form a circulation loop;
the heat exchanger comprises a refrigerating heat exchanger and a heating heat exchanger; the refrigeration heat exchanger is respectively communicated with each refrigeration heat exchange cavity of the magnetic refrigeration heat exchange device through corresponding refrigeration refrigerant pipes, and forms a refrigeration circulation pipeline; the heating heat exchangers are respectively communicated with each heating heat exchange cavity of the magnetic refrigeration heat exchange device through corresponding heating refrigerant pipes, and a heating circulation pipeline is formed.
The refrigerant in the magnetic refrigeration heat exchange system can continuously exchange heat in the corresponding heat exchange cavity, so that the heat exchange efficiency can be effectively improved, and the energy consumption is reduced.
In an embodiment of the present invention, a refrigeration control valve for controlling a communication state of each of the refrigeration refrigerant pipes is disposed in the refrigeration cycle pipe, and a heating control valve for controlling a communication state of each of the heating refrigerant pipes is disposed in the heating cycle pipe.
Therefore, the number of the refrigerant pipes communicated with the refrigeration circulation pipeline/the heating circulation pipeline can be adjusted through the refrigeration control valve/the heating control valve, and the efficiency of a refrigeration or heating system can be finely adjusted.
In an embodiment of the present invention, the magnetic refrigeration heat exchanger further includes a controller, and the controller is electrically connected to the first refrigerant pump disposed in the refrigeration heat exchanger, the second refrigerant pump disposed in the heating heat exchanger, and the driver of the magnetic refrigeration heat exchanger, respectively.
In an embodiment of the present invention, the heat exchanger is a self-cleaning heat exchanger, the self-cleaning heat exchanger includes a plurality of heat exchange tubes arranged at intervals, an airflow channel is formed between adjacent heat exchange tubes, and the self-cleaning heat exchanger further includes:
at least one set of limiting members, each set of limiting members limits two or more adjacent heat exchange tubes and the airflow channel between the adjacent heat exchange tubes into a cleaning space, and the limiting members can be used for allowing the airflow flowing through the cleaning space to pass through;
the cleaning piece, one or more cleaning pieces are restricted in the clean space, and the cleaning piece can be moved in the restricted space by the air current.
In one embodiment according to the present invention, the limiting member includes filter screens provided at both ends in the extending direction of the air flow channel and fixed to the heat exchange tubes at both sides of the air flow channel at each end, and the filter screens at both ends and the heat exchange tubes at both sides enclose a cleaning space.
In one embodiment according to the present invention, the spacing member comprises an independent cover provided outside the adjacent two or more heat exchange tubes and the air flow passage therebetween to form the cleaning space;
the cleaning piece is arranged in the independent housing, the wall of the independent housing is provided with a plurality of through holes for air flow to pass through, and the opening area of the through holes is smaller than the minimum section area of the cleaning piece.
In one embodiment according to the invention, the cleaning elements are hollow structures made of a light-weight material.
In one embodiment according to the invention, the plurality of cleaning elements are of the same or different sizes.
According to a second aspect of the present invention, there is also provided an air conditioner provided with the self-cleaning heat exchanger as disclosed in any one of the first aspects.
In one embodiment according to the invention, the bottom of the cleaning space is provided with a ball storage bin communicating with the cleaning space.
In one embodiment of the invention, the wall of the ball storage box is provided with a plurality of air holes communicated with the air duct of the air conditioner, and the opening area of the air holes is smaller than the minimum cross-sectional area of the cleaning pieces.
In one embodiment according to the present invention, the air conditioner is further provided with a ball storage passage provided inside the air conditioner and extending to a service opening of a cabinet of the air conditioner, and the ball storage box is provided in the ball storage passage and is movable into and out of the cabinet through the ball storage passage and the service opening.
In one embodiment according to the present invention, the air conditioner further comprises:
the controllable shielding piece is used for conducting or blocking a communication path between the ball storage box and the cleaning air conditioner;
and a controller for controlling the shutter to perform the on or off operation.
The invention adopts the technical scheme and has the beneficial effects that:
the self-cleaning heat exchanger provided by the invention limits the heat exchange pipes and the airflow channels between the heat exchange pipes into a cleaning space for the cleaning pieces to freely run, when airflow flows through the cleaning space, the cleaning pieces can be driven by the wind power of the airflow to irregularly move in the cleaning space, and when the cleaning pieces are in running contact with the outer surface of the self-cleaning heat exchanger, the cleaning pieces can rub the outer surface of the self-cleaning heat exchanger, so that dirt adhered to the outer surface can be clearly rubbed, and the function similar to a 'rag' can be realized, therefore, when the air conditioner normally supplies air and runs, the self-cleaning operation of the self-cleaning heat exchanger can be realized by using the cleaning pieces.
The invention also provides an electric appliance provided with the magnetic refrigeration heat exchange device, wherein the electric appliance is selected from one or more of an air conditioner, a refrigerator and an air conditioner fan.
The invention also provides a control method of the magnetic refrigeration heat exchange system, which controls refrigeration and heating by controlling the type of the heat exchange cavity communicated with the refrigerant pipe of the magnetic refrigeration heat exchange device, and simultaneously adjusts the number of the refrigerant pipes communicated with the refrigeration heat exchanger or the heating heat exchanger by the control valve so as to adjust the heat exchange efficiency of the refrigeration or the heating.
Further, the temperature and efficiency of refrigeration or heating are controlled by adjusting one or both of the rotation rate of the magnetic media bed of the magnetic refrigeration heat exchange device and the flow rate of the refrigerant in the refrigerant pipe.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural diagram of one embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 2 is a top view block diagram of one embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 3 is an internal block diagram of one embodiment of a magnetic media bed of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of another embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 5 illustrates an exemplary embodiment of a magnetic refrigeration heat exchange system according to the present invention;
FIG. 6 is a schematic structural diagram of another embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 7 is a top view block diagram of one embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention;
FIG. 8 is a first schematic view of the front side of the self-cleaning heat exchanger according to an exemplary embodiment (the front side is the extending direction toward the airflow channel);
FIG. 9 is a side view of the self-cleaning heat exchanger of the present invention according to an exemplary embodiment;
FIG. 10 is a schematic diagram of the front side of the self-cleaning heat exchanger according to an exemplary embodiment of the present invention (the front side is the extending direction toward the airflow channel);
FIG. 11 is a schematic side view of a second self-cleaning heat exchanger according to the present invention in accordance with an exemplary embodiment;
fig. 12 is a side view schematically illustrating the structure of an air conditioner according to an exemplary embodiment of the present invention.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims. Embodiments may be referred to herein, individually or collectively, by the term "invention" merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. Herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the structures, products and the like disclosed by the embodiments, the description is relatively simple because the structures, the products and the like correspond to the parts disclosed by the embodiments, and the relevant parts can be just described by referring to the method part.
According to a first aspect of the embodiments of the present invention, there is provided a magnetic refrigeration heat exchange device, including: magnetic working medium bed, magnet, heat exchange cavity, refrigerant pipe and driver. Fig. 1 is a schematic structural diagram of an embodiment of a magnetic refrigeration heat exchange device according to the present invention, and as shown in fig. 1, a magnetic working medium bed 101 is a circular hollow cylinder body in which a magnetic working medium is filled. The magnet (not shown) is fixed in a sector area of the axis of the magnetic work mass bed, and can be arranged along the radial direction of the magnetic work mass bed 101, such as fixed at the inner side or the outer side of a circular ring of the middle magnetic work mass bed 101, or one magnet is arranged at each of the inner side and the outer side, so as to strengthen the strength of the magnetic field and improve the excitation efficiency; the magnet may be provided along the circular ring surface of the magnetic work bed 101 in the axial direction of the circular ring, that is, when the magnetic work bed 101 is placed horizontally, the magnet may be fixed to the upper side or the lower side of the magnetic work bed 101, or a magnet may be fixed to the upper side and the lower side of the magnetic work bed 101 so as to face each other. The heat exchange chamber 102 is a hollow chamber surrounding a part of the magnetic work bed 101, and the magnetic work bed 101 and the heat exchange chamber 102 are close to each other but do not contact each other. The refrigerant pipe 103 is communicated with the heat exchange cavity 102, and the driver is connected with the magnetic working medium bed 101 and drives the magnetic working medium bed 101 to rotate by taking the circular central axis as the axis. Therefore, when the magnetic working medium body 101 rotates around the center of the circular ring as an axis under the driving of a driver (not shown), the heat exchange cavity 102 still remains static, the fixed position of the heat exchange cavity 102 can be an excitation area, and at this time, the refrigerant in the heat exchange cavity 102 continuously absorbs the cold energy released by the magnetic working medium which is continuously excited due to the rotation of the magnetic working medium bed 101, so that the low-temperature refrigerant is conveyed out through the refrigerant pipe 103; the heat exchange cavity 102 may also be fixed in the demagnetization area, and at this time, the refrigerant in the heat exchange cavity 102 continuously absorbs the heat released by the magnetic working medium that is demagnetized continuously due to the rotation of the magnetic working medium bed 101, so that the high-temperature refrigerant is conveyed out through the refrigerant pipe 103. A controllable bracket can also be arranged and is fixedly connected with the heat exchange cavity 102, the heat exchange cavity 102 is positioned in the excitation area when low-temperature refrigerant is needed, and the heat exchange cavity 102 is positioned in the demagnetization area by the controllable bracket when high-temperature refrigerant is needed. The magnetic body is fixed and static, the magnetic working medium rotates relative to the magnetic body, the area of the magnetic working medium bed 101 close to the magnetic body is an excitation area, the area of the magnetic working medium bed far away from the magnetic body is a demagnetization area, a pipeline is arranged, a refrigerant is arranged in the pipeline, the refrigerant can continuously flow through the pipeline in a circulating way to enter the heat exchange cavity to exchange heat with the magnetic working medium in the excitation area, and the released cold energy is taken away, so that the refrigeration effect is realized; the heat exchange cavity 102 can also be arranged in the demagnetization area to take away heat released by the magnetic medium in the demagnetization area, so that the heating effect is realized. Therefore, the flow of the refrigerant is not required to be controlled by arranging the valve body, and the cold quantity or the heat quantity released by the magnetic working medium can be continuously taken away by the refrigerant, so that the defects of pause, alternation and the like in the conventional magnetic refrigeration system are overcome, the heat exchange efficiency is improved, and the energy consumption is reduced.
Fig. 2 is a top view structural diagram of an embodiment of a magnetic refrigeration heat exchange device according to the present invention, the magnetic refrigeration heat exchange device includes a magnetic working medium bed 201, a heat exchange cavity 202, a refrigerant pipe 203, a first magnet 204, a second magnet 205, a driver 206, and a connecting rod 207, as shown in fig. 2, the magnetic working medium bed 201 is a circular hollow cylinder, and a magnetic working medium is filled in the cylinder. The first magnet 204 and the second magnet 205 are fixed in a sector area of the magnetic working medium bed, as shown in fig. 2, one magnet is oppositely arranged on the inner side and the outer side of the sector area respectively, so that the strength of a magnetic field is enhanced, and the excitation efficiency is improved; the magnet may be disposed along the circular ring surface of the magnetic work bed 201 in the axial direction of the circular ring, that is, when the magnetic work bed 201 is placed horizontally, the magnet may be fixed to the upper side or the lower side of the magnetic work bed 201, or a magnet may be fixed to the upper side and the lower side of the magnetic work bed 201 in an opposed manner. The heat exchange chamber 202 is a hollow cavity surrounding a partial region of the magnetic media bed 201, and the magnetic media bed 201 and the heat exchange chamber 202 are close to each other but do not contact each other. The refrigerant pipe 203 is communicated with the heat exchange cavity 202, the driver 206 is connected with the magnetic work bed 201 through the connecting rod 207 and drives the magnetic work bed 201 to rotate by taking a circular central axis of the magnetic work bed 201 as an axis, the driver 206 is arranged at the axis of the magnetic work bed 201, the connecting rod 207 extends to the magnetic work bed 201 from the driver 206 along the radial direction, the connecting point of the connecting rod 207 and the magnetic work bed 201 can be on the inner ring side wall of the magnetic work bed 201, can be on the top surface or the bottom surface of the circular ring surface of the magnetic work bed 207, and can even be connected to the outer ring side wall of the magnetic work bed 207, however, no matter how the connecting rod 207 is connected with the magnetic work bed 201, the heat exchange cavity 202 needs to be correspondingly provided with a passage, so that the connecting rod 207 which synchronously rotates can not be blocked at all when the magnetic work bed 201 rotates. When the magnetic working medium body 201 rotates by taking the center of the circular ring as an axis under the driving of the driver 206, the heat exchange cavity 202 still keeps static, although the fixed position of the heat exchange cavity 202 is an excitation area, the cold medium in the heat exchange cavity 202 continuously absorbs the cold energy released by the magnetic working medium which is continuously excited due to the rotation of the magnetic working medium bed 201, so that the low-temperature cold medium is conveyed out through the cold medium pipe 203; however, it should be understood that the heat exchange cavity 202 may be fixed in the demagnetization area, and in this case, the refrigerant in the heat exchange cavity 202 will continuously absorb the heat released by the magnetic medium that is demagnetized continuously due to the rotation of the magnetic medium bed 201, so as to transport the high temperature refrigerant out through the refrigerant pipe 203. A controllable bracket may also be provided, the bracket is fixedly connected to the heat exchange cavity 202, the heat exchange cavity 202 is positioned in the excitation area when a low-temperature refrigerant is required, and the bracket is controlled to position the heat exchange cavity 202 in the demagnetization area when a high-temperature refrigerant is required. The magnetic body is fixed and static, the magnetic working medium rotates relative to the magnetic body, the area of the magnetic working medium bed 201 close to the magnetic body is an excitation area, the area of the magnetic working medium bed far away from the magnetic body is a demagnetization area, a pipeline is arranged, a refrigerant is arranged in the pipeline, the refrigerant can continuously flow through the pipeline in a circulating way to enter the heat exchange cavity to exchange heat with the magnetic working medium in the excitation area, and the released cold energy is taken away, so that the refrigeration effect is realized; the heat exchange cavity 202 can also be arranged in the demagnetization area to take away the heat released by the magnetic medium in the demagnetization area, thereby realizing the heating effect. Therefore, the flow of the refrigerant is not required to be controlled by arranging the valve body, and the cold quantity or the heat quantity released by the magnetic working medium can be continuously taken away by the refrigerant, so that the defects of pause, alternation and the like in the conventional magnetic refrigeration system are overcome, the heat exchange efficiency is improved, and the energy consumption is reduced.
Fig. 3 is an internal structural view of one embodiment of a magnetic media bed of the magnetic refrigeration heat exchange apparatus according to the present invention. The magnetic working medium bed is a circular hollow cylinder 301, and the hollow cylinder 301 is filled with magnetic working medium, such as nano Gd3Ga5O12Nano-alloy, GdSiGe alloy, Gd binary alloy, perovskite oxide, and the like. As shown in fig. 3, in this embodiment, a plurality of partition plates 302 are uniformly distributed in the hollow cylinder 301 to divide the hollow cylinder into a plurality of chambers 303 uniformly arranged in a radial direction, and the chambers 303 are filled with a magnetic medium. Because the compartment 303 makes the magnetic working media isolated regionally, on one hand, the loss of heat between the magnetic working media can be reduced, on the other hand, the utilization rate of the heat can be improved, and the energy consumption is reduced.
Fig. 4 is a schematic structural diagram of another embodiment of the magnetic refrigeration heat exchange device according to the present invention, which includes a magnetic working medium bed 401, a driver (not shown), a first heat exchange cavity 402, a first refrigerant pipe 403, a second heat exchange cavity 404, a second refrigerant pipe 405, and a magnet (not shown), as shown in fig. 2, the magnetic working medium bed 401 is a circular hollow cylinder, and a magnetic working medium is filled in the cylinder. The magnets (not shown) are fixed in a sector area of the axis of the magnetic work mass bed, and can be arranged along the radial direction of the magnetic work mass bed 401, such as the inner side or the outer side of a circular ring of the middle magnetic work mass bed 401, or one magnet is arranged on each of the inner side and the outer side, so as to strengthen the strength of the magnetic field and improve the excitation efficiency; the magnet may be disposed along the circular ring surface of the magnetic work bed 401 in the axial direction of the circular ring, that is, when the magnetic work bed 401 is placed horizontally, the magnet may be fixed to the upper side or the lower side of the magnetic work bed 401, or a magnet may be fixed to the upper side and the lower side of the magnetic work bed 401 so as to face each other. The first heat exchange cavity 402 and the second heat exchange cavity 404 are hollow cavities respectively surrounding two opposite regions of the magnetic working medium bed 401, and the magnetic working medium bed 401 and the heat exchange cavity 402, and the magnetic working medium bed 401 and the second heat exchange cavity 404 are close to each other but not in contact with each other. The first heat exchange cavity 403 is fixed in the excitation area, the first refrigerant pipe 403 is communicated with the refrigeration pipeline, the second heat exchange cavity 404 is fixed in the demagnetization area, and the second refrigerant pipe 405 is communicated with the heating pipeline. The driver drives the magnetic working medium bed 401 to rotate, so that the magnetic working medium in the magnetic working medium bed 401 continuously enters the excitation area to release cold energy, and the refrigerant in the first heat exchange cavity 402 can continuously exchange heat, so that a low-temperature refrigerant is output; meanwhile, the excited magnetic medium continuously leaves the magnetic field along with the rotation of the magnetic medium body 401 and enters the demagnetization area, so that the refrigerant in the second heat exchange cavity 404 can be continuously heat exchanged by pumping the first refrigerant pipe 403, and a high-temperature refrigerant is output to the second refrigerant pipe 405. Therefore, in the refrigeration pipeline or the heating pipeline, the refrigerant can respectively carry out continuous heat exchange in the corresponding heat exchange cavity, the heat exchange efficiency is improved, and the energy consumption of the system is effectively reduced. Furthermore, the surface of the magnetic work medium bed is provided with a groove and a convex block along the arc shape of the circular ring, and the surface of the corresponding heat exchange cavity facing the magnetic work medium bed is provided with the convex block and the groove, so that the specific surface area can be increased, and the heat exchange efficiency is improved.
The invention also provides a magnetic refrigeration heat exchange system, which comprises: the refrigeration heat exchange device, the refrigerant pipeline and the heat exchanger; and the refrigerant pipeline is respectively connected with the magnetic refrigeration heat exchange device and the heat exchanger to form a circulation loop. Fig. 5 shows an exemplary embodiment of a magnetic refrigeration heat exchange system according to the present invention, and as shown in fig. 5, a magnetic media bed 501 exchanges heat with a first heat exchange chamber 502 and a second heat exchange chamber 504, respectively. The first heat exchange cavity 502 is fixed in the excitation area, so that the refrigerant in the first heat exchange cavity 502 can continuously absorb the cold energy released by the magnetic working medium in the excitation area, so that the first refrigerant pipe 503 outputs a low-temperature refrigerant, the low-temperature refrigerant enters the refrigeration cycle pipeline 506 and exchanges heat at the refrigeration heat exchanger 507, and the refrigerant with the raised temperature after heat exchange returns to the first heat exchange cavity 502 along the refrigeration cycle pipeline 506. Meanwhile, the second heat exchange cavity 504 is fixed in the demagnetization area, so that the refrigerant in the second heat exchange cavity 504 can continuously absorb the heat released by the magnetic medium in the demagnetization area, the second refrigerant pipe 505 outputs a high-temperature refrigerant, the high-temperature refrigerant enters the heating circulation pipeline 508 and exchanges heat at the heating heat exchanger 509, and the refrigerant with reduced temperature after heat exchange returns to the second heat exchange cavity 504 along the heating circulation pipeline 508. The cold medium in the magnetic refrigeration heat exchange system can continuously exchange heat in the corresponding heat exchange cavity, frequent switching between refrigeration and heating is not needed, the heat exchange efficiency can be effectively improved, and the energy consumption of the system is reduced.
Furthermore, a controller can be further arranged, and the controller is respectively and electrically connected with the first refrigerant pump arranged in the refrigeration heat exchanger, the second refrigerant pump arranged in the heating heat exchanger and the driver of the magnetic refrigeration heat exchange device. Therefore, the refrigeration or heating function is realized by controlling the opening or closing of the first refrigerant pump and the second refrigerant pump, and the refrigeration or heating temperature and efficiency are controlled by adjusting one or two of the refrigerant flow rates in the refrigerant pipe at the rotation rate of the magnetic work medium bed through the control driver.
Fig. 6 is a schematic structural diagram of another exemplary embodiment of a magnetic refrigeration heat exchange apparatus according to the present invention, in this embodiment the magnetic refrigeration heat exchange apparatus comprises: magnetic working medium bed 600, magnet, heat transfer chamber, refrigerant pipe and driver. As shown in fig. 6, the magnetic working medium bed 600 is a circular hollow cylinder in which a magnetic working medium is filled. Magnets (not shown) are respectively fixed in a plurality of sector areas with the axial center of the magnetic work bed as the center of a circle, and excitation areas and demagnetization areas formed based on the magnets are distributed alternately, each excitation area and each demagnetization area are respectively provided with a heat exchange cavity which is independent from each other, the heat exchange cavity is a hollow cavity body which surrounds partial area of the magnetic working medium bed, the magnetic working medium bed and the heat exchange cavity are close to each other but are not contacted, as shown in figure 6, in this embodiment, four heat exchange chambers are provided, namely a first cooling heat exchange chamber 601, a first heating heat exchange chamber 602, a second cooling heat exchange chamber 603 and a second heating heat exchange chamber 604, the first cooling heat exchange chamber 601 and the second cooling heat exchange chamber 603 are respectively fixed in two excitation areas which are centrosymmetric with the axis of the magnetic media bed 600, and the first heating heat exchange cavity 602 and the second heating heat exchange cavity 604 are respectively fixed in two demagnetizing regions that are centrosymmetric with respect to the axis of the magnetic media bed 600. The first cooling heat exchange cavity 601 is communicated with a first cooling refrigerant pipe 605, each heat exchange cavity is provided with an independent refrigerant pipe, as shown in fig. 6, the first heating heat exchange cavity 602 is communicated with a first heating refrigerant pipe 606, the second cooling heat exchange cavity 603 is communicated with a second cooling refrigerant pipe 607, and the second heating heat exchange cavity 604 is communicated with a second heating refrigerant pipe. A driver (not shown) is connected to the magnetic work bed 600 and drives the magnetic work bed 600 to rotate around the circular central axis, and generally, the driver is fixed to the magnetic work bed 600. It should be understood that, although fig. 6 shows a case where four heat exchange chambers are provided, the number of the heat exchange chambers may be three, five, six, etc. according to the requirement, and of course, when the number of the heat exchange chambers is odd, the number of the heat exchange chambers for communicating the refrigeration cycle pipeline and the heating cycle pipeline will be different, and may be set according to the requirement, or one or more heat exchange chambers may be provided or may be switched between the excitation area and the demagnetization area, and accordingly, the refrigerant pipe communicating the heat exchange chambers that may be switched between the excitation area and the demagnetization area also needs to be switched between the refrigeration cycle pipeline and the heating cycle pipeline through corresponding valves.
Fig. 7 is a schematic top view of a magnetic refrigeration heat exchange device according to an exemplary embodiment of the present invention, in which the magnetic refrigeration heat exchange device includes: magnetic media bed 700, magnets, heat exchange chambers, coolant tubes, and driver 714. As shown in fig. 7, the magnetic working medium bed 700 is a circular hollow cylinder in which a magnetic working medium is filled. The magnetic bodies are respectively fixed in a plurality of sector areas with the axle center of the magnetic media bed as the circle center, and excitation areas and demagnetization areas formed on the basis of the magnetic bodies are distributed alternately, mutually independent heat exchange cavities are respectively arranged in each excitation area and each demagnetization area, the heat exchange cavities are hollow cavities surrounding partial areas of the magnetic media bed, and the magnetic media bed and the heat exchange cavities are close to each other but are not in contact. As shown in fig. 7, in this embodiment, the magnets are two magnet groups that are symmetric about the axial center of the magnetic work bed 700, the first magnet group is composed of a first magnet 709 and a second magnet 710, the second magnet group is composed of a third magnet 711 and a fourth magnet 712, the first magnet 709 is fixed outside the ring of the magnetic work bed 700, and the second magnet 710 is fixed inside the ring of the magnetic work bed 700 opposite to the first magnet 710. The third magnet 711 and the fourth magnet 712 are also arranged in a similar manner. Of course, it is also possible to fix two magnets of the same magnet group respectively above and below the annular plane of the magnetic work bed. As shown in fig. 7, in this embodiment, four heat exchange chambers are provided, which are a first cooling heat exchange chamber 701, a first heating heat exchange chamber 702, a second cooling heat exchange chamber 703 and a second heating heat exchange chamber 704, respectively, the first cooling heat exchange chamber 701 and the second cooling heat exchange chamber 703 are respectively fixed in two excitation regions that are centrosymmetric with respect to the axis of the magnetic media bed 700, and the first heating heat exchange chamber 702 and the second heating heat exchange chamber 704 are respectively fixed in two demagnetization regions that are centrosymmetric with respect to the axis of the magnetic media bed 700. The first cooling heat exchange cavity 701 is communicated with a first cooling refrigerant pipe 705, each heat exchange cavity is provided with an independent refrigerant pipe, as shown in fig. 7, the first heating heat exchange cavity 702 is communicated with a first heating refrigerant pipe 707, the second cooling heat exchange cavity 703 is communicated with a second cooling refrigerant pipe 707, and the second heating heat exchange cavity 704 is communicated with a second heating refrigerant pipe. The driver 714 is connected to the magnetic work bed 700 through a connecting rod 713, and drives the magnetic work bed 700 to rotate around the circular central axis of the magnetic work bed 700, and generally, the driver is fixed to the central axis of the magnetic work bed 700. Further, the communication state of the first refrigeration refrigerant pipe 705 and the second refrigeration refrigerant pipe with the refrigeration cycle pipeline can be controlled by a valve, so that the refrigeration efficiency of the refrigeration cycle pipeline is adjusted; similarly, the communication state between the first heating refrigerant pipe 706 and the second heating refrigerant pipe 708 and the heating cycle pipe may be controlled by a valve, so as to adjust the cooling efficiency of the cooling cycle pipe. Furthermore, the first refrigeration heat exchange cavity 701 and the second refrigeration heat exchange cavity 703 can be set in different volume forms, and then the communication states of the first refrigeration refrigerant pipe 705 and the second refrigeration refrigerant pipe with the refrigeration cycle pipeline are controlled through valves, so that the refrigeration efficiency of the refrigeration cycle pipeline is adjusted; similarly, the first heating heat exchange cavity 702 and the second heating heat exchange cavity 704 may be set to have different volume forms, and then the communication states of the first heating refrigerant pipe 706 and the second heating refrigerant pipe 708 and the heating circulation pipeline are controlled by valves, so that a heat exchange cavity or a combination of heat exchange cavities with appropriate volume can be selected to participate in the cooling/heating circulation according to needs, so as to finely adjust the cooling efficiency of the cooling circulation pipeline.
As shown in fig. 8 to 11, the present invention provides a self-cleaning heat exchanger 801, wherein a self-cleaning heat exchanger 1 comprises a plurality of heat exchange tubes 811 arranged at intervals, in an embodiment, the plurality of heat exchange tubes 811 are arranged in parallel at the same interval, wherein adjacent heat exchange tubes 811 are communicated with each other through U-shaped tubes or bent tubes at the end portions, each heat exchange tube 811 is regarded as a straight tube section except the U-shaped tubes or bent tubes at the end portions, in this embodiment, a space between the straight tube sections of two adjacent heat exchange tubes 811 is mainly defined as an air flow channel 812, and air flow can freely flow along the air flow channel 812.
It should be understood that the self-cleaning heat exchanger 801 to which the present invention is applied is not limited to the tube type self-cleaning heat exchanger 801 mentioned above, and other types such as the sheet type self-cleaning heat exchanger 801 may also adopt similar technical solutions.
Self-cleaning heat exchanger 801 further comprises at least one set of stop members and cleaning elements 802. Wherein each set of the limiting members limits two or more adjacent heat exchange tubes 811 and the air flow channel 812 between the adjacent heat exchange tubes to form a cleaning space 813, and the limiting members can allow the air flow flowing through the cleaning space 813 to pass through; one or more cleaning members 802 are defined in the cleaning space 813, and the cleaning members 802 can be moved in the defined space by the airflow.
Therefore, when the air flow flows through the cleaning space 813, the cleaning member 802 can be irregularly moved in the cleaning space 813 under the driving of the wind force of the air flow, when the cleaning member 802 is in running contact with the outer surface of the self-cleaning heat exchanger 801, the cleaning member 802 can rub the outer surface of the self-cleaning heat exchanger 801 to clearly rub dirt adhered to the outer surface, and the dirt can play a role similar to 'rag', so that the self-cleaning operation of the self-cleaning heat exchanger 801 can be realized by the cleaning member 802 while the air conditioner 803 is normally supplied with air and running.
In an alternative embodiment, taking two adjacent heat exchange tubes 811 as an example, the limiting member includes filter screens disposed at two ends of the extending direction of the airflow channel 812 and fixed to the heat exchange tubes 811 at two sides of the airflow channel 812 at each end, and the filter screens at two ends and the heat exchange tubes 811 at two sides enclose a cleaning space 813.
Here, the filter screen is not limited to be arranged around the heat exchange pipes 811 at both sides of the airflow channel 812, and if there are other gaps between the heat exchange pipes 811 at both sides that may cause the cleaning members 802 to be detached, the filter screen may be additionally installed to shield the gaps, so as to ensure that the movement range of the cleaning members 802 is always within the cleaning space 813.
In yet another alternative implementation, the spacing member comprises a separate housing disposed outside of two or more adjacent heat exchange tubes 811 and the air flow passages 812 therebetween to form the cleaning space 813; for example, for a self-cleaning heat exchanger 801, the individual housing may be designed to have an outer contour slightly larger than that of the self-cleaning heat exchanger 801, and the individual housing is covered on the self-cleaning heat exchanger 801, so that the housing is a space formed by locking all the heat exchange tubes 811 of the whole self-cleaning heat exchanger 801 and the air flow passages 812 therebetween as a cleaning space 813.
The cleaning element 802 is disposed in an independent housing, and a plurality of through holes for airflow to pass through are formed in a wall of the independent housing, so as to ensure that the airflow can flow in and out of the independent housing.
Here, the opening area of the through hole is smaller than the minimum cross-sectional area of the cleaning member 802 to prevent the cleaning member 802 from being separated from the separate housing from the through hole, thereby securing the operation safety of the air conditioner 803 and avoiding the interference influence of the cleaning member 802 on other devices of the air conditioner 803.
In an alternative embodiment, the cleaning members 802 are hollow structures made of a lightweight material, including but not limited to rubber or other lighter weight material, which can reduce the individual weight of the cleaning members 802 to make them more easily moved by the airflow in irregular motion.
Here, the shape of the cleaning member 802 is not limited to a spherical shape, and may be designed to be square, oval, or the like.
Preferably, in order to improve the friction dust removal effect, the outer surface of the cleaning elements 802 may be formed with an irregular convex structure or may be designed with fluff, bristles, etc.
In the construction of self-cleaning heat exchanger 801 shown in fig. 8 and 9, cleaning elements 802 of the same size are arranged in cleaning space 13; in the structure of self-cleaning heat exchanger 801 shown in fig. 10 and 11, cleaning members 802 with different sizes may be disposed in cleaning space 813, where the sizes and volumes of cleaning members 802 are different, so that the contact positions and contact areas of cleaning members 802 with different sizes and the outer surface of self-cleaning heat exchanger 801 are different, and cleaning member 802 with a smaller volume may rub some small gaps of self-cleaning heat exchanger 801 and dust in the small space clearly to ensure the overall cleaning effect of self-cleaning heat exchanger 801.
Fig. 12 is a schematic structural diagram of an air conditioner 903 of the present invention according to an exemplary embodiment.
As shown in fig. 12, the present invention further provides an air conditioner 903, the air conditioner 903 includes a housing 934, the air conditioner 903 is further provided with any one of the self-cleaning heat exchangers 901 disclosed in the foregoing embodiments, and the self-cleaning heat exchanger 901 is disposed in the air duct 932.
In an alternative embodiment, the bottom of the cleaning space 913 is provided with a ball storage bin communicating with the cleaning space 913, which can be used as a receiving space for a plurality of cleaning elements 902 during air conditioning off and as a collecting bin for dust cleared by the cleaning elements.
Specifically, one of the cleaning spaces 913 defined by the restricting member shown in the foregoing embodiments is an approximately rectangular space having a ball storage box with an open top at the bottom; when the air conditioner is in operation, airflow flows through the cleaning space 913, the wind power drives the cleaning piece to move from the ball storage box to the cleaning space 913, and friction dedusting is performed on the outer surface of the self-cleaning heat exchanger 901 during movement; when the air conditioner is stopped, the cleaning piece moves to the ball storage box below again under the action of gravity.
Preferably, the wall of the ball storage box is provided with a plurality of air holes communicated with the air duct 32 of the air conditioner 903, so that when the air flow flows through the air duct 932, a part of the air flow can enter the wall through the air holes, and thus, the cleaning element can move from the ball storage box to the cleaning space 913 more easily.
Here, the opening area of the air hole is smaller than the minimum cross-sectional area of the cleaning member to prevent the cleaning member 902 from being separated from the air hole and out of the ball storage box, thereby ensuring the operation safety of the air conditioner 903 and avoiding the interference influence of the cleaning member on other devices of the air conditioner 903.
In an alternative embodiment, the air conditioner 903 is further provided with a ball storage channel which is provided inside the air conditioner 903 and extends to a service opening of the casing of the air conditioner 903, and a ball storage box is provided in the ball storage channel and can be moved into or out of the casing through the ball storage channel and the service opening.
Specifically, be equipped with the maintenance mouth on the casing of air conditioner 903, extend into this storage ball passageway to the inside of air conditioner 903 along the maintenance mouth, be equipped with the slide rail in the storage ball passageway, store up the ball case and remove on the slide rail, like this, store up the ball case and can realize its immigration and remove the operation with the structural style of similar "drawer" to convenience of customers is to the change of cleaning member and the clearance of the dust of collection.
In an alternative embodiment, the air conditioner 903 further comprises: a controllable shielding piece for conducting or blocking a communication path between the ball storage box and the cleaning air conditioner 903; in this embodiment, the shielding member is a shielding plate disposed at the top opening of the ball storage box, and the shielding plate is controlled by the driving device to move between a first position where the shielding plate does not shield the top opening and a second position where the shielding plate shields the top opening, so as to achieve the operation of connecting or disconnecting the communication path.
The air conditioner further includes a controller that controls the shutter to perform an operation of conducting or blocking. In this embodiment, the controller controls the operation of the shutter mainly by controlling the operation of the driving means.
For example, the shielding plate is provided with a rack extending along a connecting line direction between a first position and a second position, the driving device is a motor, the end part of a crankshaft of the motor is provided with a gear meshed with the rack, and when the motor runs in the forward direction, the motor drives the shielding plate to move from the first position to the second position through the meshing and matching of the gear and the rack; when the motor runs in the reverse direction, the shielding plate moves from the second position to the first position. Therefore, the controller can realize the operation control of the shielding piece by controlling the running direction of the motor.
In this embodiment, the specific operation of the controller may be performed according to an instruction input by a user, for example, in a shutdown state of the air conditioner, the cleaning element is completely located in the ball storage box, and at this time, the blocking element blocks the communication path; in the running process of the air conditioner, if a first instruction for starting self-cleaning is not received, the shielding piece still blocks the communication path, and at the moment, although airflow flows through the cleaning space, the cleaning piece is limited in the ball storage box, so that the self-cleaning heat exchanger cannot be cleaned by the cleaning piece at the moment; when a first instruction of starting self-cleaning is received, the shielding piece is communicated with the communication path, and at the moment, the airflow can drive the cleaning piece to move into the cleaning space so as to remove impurities such as dust on the self-cleaning heat exchanger by utilizing the irregular movement of the cleaning piece.
When a second command to exit self-cleaning is received, the air conditioner can recover the cleaning members in the cleaning space in two ways: one is to control the fan of the air conditioner to pause, at the moment, as no air flow driven by the fan passes through, the cleaning piece can be gradually settled back into the ball storage box under the action of gravity, after the cleaning piece is completely recovered, the shielding piece blocks the communication path and controls the operation of the restarting fan; and the other is to temporarily not respond to the second instruction, the air conditioner still maintains normal operation, and after the air conditioner is turned off and the fan stops operating, the second instruction is responded, at the moment, the cleaning piece is settled back into the storage ball box, and the shielding piece blocks the communication path.
Here, the specific operation of the controller may also be adjusted according to the operation state of the air conditioner itself, for example, the self-cleaning operation may be controlled to be performed only in a set period in the cooling mode of the air conditioner operation, because there is much dust adhered to the self-cleaning heat exchanger in the high temperature weather in summer of the cooling mode operation, and therefore, the air conditioner generates a first instruction for performing cleaning of the self-cleaning heat exchanger through the set period, so that the cleanliness of the self-cleaning heat exchanger may be effectively ensured, the user experience may be improved, and the damage influence of the low temperature environment on the outer surface of the self-cleaning heat exchanger on the cleaning member may be reduced.
And controlling the self-cleaning operation not to be executed in the air-conditioning operation heating mode, wherein the reason is that the temperature of the outer surface of the self-cleaning heat exchanger is higher in the air-conditioning operation heating mode, and for cleaning pieces made of rubber and other materials, the high temperature easily causes the problems of melting deformation and the like of the cleaning pieces, so that the self-cleaning operation is not executed in the air-conditioning operation heating mode to ensure the service life of the cleaning pieces and also avoid the problem that the melted cleaning pieces are adhered to the outer surface of the self-cleaning heat exchanger
The electric appliance of the magnetic refrigeration heat exchange device can be applied to various electric appliances, including but not limited to air conditioners, refrigerators, air conditioner fans and the like.
It is to be understood that the present invention is not limited to the procedures and structures described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：一种热泵系统