阅读说明：本技术 热交换器及具有其的空调器 (Heat exchanger and air conditioner with same ) 是由 董旭 王飞 费兆军 周枢 吴剑 于 2019-11-18 设计创作，主要内容包括：本发明涉及热交换器及具有其的空调器。本发明提供了一种热交换器包括：冷媒腔体,其内限定有容纳腔；第一管路,具有位于所述冷媒腔体外的第一端,以及位于所述容纳腔的下部的第二端；第二管路,具有位于所述冷媒腔体外的第一端,以及位于所述容纳腔的上部的第二端；和换热部,设置于所述冷媒腔体外,且所述换热部具有至少一个冷媒通道,每个所述冷媒通道的一端连通所述容纳腔的下部,另一端连通所述容纳腔的上部。本发明还提供了一种具有上述热交换器的空调器。该热交换器换热效率高、成本低。(The invention relates to a heat exchanger and an air conditioner with the same. The present invention provides a heat exchanger comprising: the refrigerant cavity is internally limited with an accommodating cavity; the first pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the lower part of the accommodating cavity; the second pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the upper part of the accommodating cavity; and the heat exchange part is arranged outside the refrigerant cavity body and is provided with at least one refrigerant channel, one end of each refrigerant channel is communicated with the lower part of the accommodating cavity, and the other end of each refrigerant channel is communicated with the upper part of the accommodating cavity. The invention also provides an air conditioner with the heat exchanger. The heat exchanger has high heat exchange efficiency and low cost.)

1. A heat exchanger, comprising:

the refrigerant cavity is internally limited with an accommodating cavity;

the first pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the lower part of the accommodating cavity;

the second pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the upper part of the accommodating cavity; and

the heat exchanging part is arranged outside the refrigerant cavity and is provided with at least one refrigerant channel, one end of each refrigerant channel is communicated with the lower part of the accommodating cavity, and the other end of each refrigerant channel is communicated with the upper part of the accommodating cavity.

2. The heat exchanger of claim 1, further comprising:

the gas-liquid separation structure is arranged in the accommodating cavity and divides the accommodating cavity into an upper cavity and a lower cavity, and the gas-liquid separation structure is provided with at least one communication hole for communicating the upper cavity with the lower cavity;

the second end of the first pipeline is communicated with the lower cavity;

and the second end of the second pipeline is communicated with the upper cavity.

3. The heat exchanger of claim 1,

the refrigerant cavity is located at the central position of the heat exchanging part.

4. The heat exchanger of claim 1,

the lower extreme that holds the chamber is provided with every the first cavity of refrigerant passageway intercommunication, the upper surface of first cavity is provided with the intercommunication hold the first opening in chamber.

5. The heat exchanger of claim 1,

the upper end of the accommodating cavity is provided with a second cavity communicated with each refrigerant channel, and the lower surface of the second cavity is provided with a second communication port communicated with the accommodating cavity;

and the second end of the second pipeline is communicated with the second cavity.

6. The heat exchanger of claim 1, further comprising a plurality of first branches and a plurality of second branches;

the plurality of refrigerant channels extend along the axial direction of the accommodating cavity;

each first branch is communicated with the lower part of the containing cavity and is connected with the lower ends of one or more refrigerant channels;

each second branch is communicated with the upper part of the accommodating cavity, and each second branch is connected with the upper end of one or more refrigerant channels.

7. The heat exchanger of claim 3, further comprising a housing;

the heat exchanging part and the refrigerant cavity are arranged in the shell;

the shell is a heat-conducting shell.

8. The heat exchanger of claim 3,

the heat exchanging part also comprises at least one or more heat exchanging cylinders which are coaxially arranged, and the cylinder wall of each heat exchanging cylinder is provided with one or more refrigerant channels; or the like, or, alternatively,

the heat exchanging part further comprises a plurality of heat exchanging plates, the heat exchanging plates are sequentially arranged on the outer side of the refrigerant cavity at intervals along the circumferential direction of the refrigerant cavity, and one or more refrigerant channels are arranged on each heat exchanging plate.

9. The heat exchanger of claim 1,

the heat exchanging part is an integrated workpiece and is formed by adopting an extrusion process; or the like, or, alternatively,

the heat exchanging part and the refrigerant cavity form an integral workpiece, and the integral workpiece is formed by adopting an extrusion process; or the like, or, alternatively,

the heat exchanger is an integrated workpiece and is formed by adopting an extrusion process.

10. An air conditioner comprises an evaporator and a condenser, and is characterized in that,

the evaporator and/or the condenser using the heat exchanger as claimed in claims 1 to 9.

Technical Field

The invention relates to the field of refrigeration and heating, in particular to a heat exchanger and an air conditioner with the same.

Background

With the development of science and technology, the development of social economy and the improvement of the living standard of people, high comfort becomes high demand of users, and the air conditioner also becomes an indispensable household appliance in daily life of people. The air-conditioning refrigeration system is mainly formed by connecting a compressor, a condenser, an air-conditioning expansion valve and an evaporator through refrigerant pipelines. When the air conditioner operates in a refrigerating mode, low-temperature low-pressure refrigerant gas is sucked by the compressor and then is changed into high-temperature high-pressure refrigerant gas, the high-temperature high-pressure refrigerant gas is released in the outdoor condenser and is changed into normal-temperature high-pressure refrigerant liquid, the normal-temperature high-pressure refrigerant liquid is throttled and reduced in pressure by the air conditioner expansion valve and then is changed into low-temperature low-pressure refrigerant liquid, the low-temperature low-pressure refrigerant liquid refrigerant absorbs heat in the indoor evaporator and is evaporated into low-temperature low-pressure refrigerant gas, then the low-temperature low-pressure refrigerant gas enters. The existing evaporator for air conditioner usually adopts a tube-fin evaporator, and the inventor finds that the existing evaporator is still to be optimized.

Disclosure of Invention

The object of the first aspect of the invention is to provide an optimized heat exchanger.

An object of a second aspect of the present invention is to provide an air conditioner having the above heat exchanger.

According to a first aspect of the invention, the invention proposes a heat exchanger comprising:

the refrigerant cavity is internally limited with an accommodating cavity;

the first pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the lower part of the accommodating cavity;

the second pipeline is provided with a first end positioned outside the refrigerant cavity and a second end positioned at the upper part of the accommodating cavity; and

the heat exchanging part is arranged outside the refrigerant cavity and is provided with at least one refrigerant channel, one end of each refrigerant channel is communicated with the lower part of the accommodating cavity, and the other end of each refrigerant channel is communicated with the upper part of the accommodating cavity.

Optionally, the heat exchanger further comprises a gas-liquid separation structure arranged in the accommodating cavity to separate the accommodating cavity into an upper cavity and a lower cavity, and the gas-liquid separation structure is provided with at least one communication hole for communicating the upper cavity and the lower cavity;

the second end of the first pipeline is communicated with the lower cavity;

and the second end of the second pipeline is communicated with the upper cavity.

Optionally, the refrigerant cavity is located at a central position of the heat exchanging portion.

Optionally, the lower end of the accommodating cavity is provided with a first cavity communicated with each refrigerant channel, and the upper surface of the first cavity is provided with a first communication port communicated with the accommodating cavity.

Optionally, a second cavity communicated with each refrigerant channel is arranged at the upper end of the accommodating cavity, and a second communication port communicated with the accommodating cavity is arranged on the lower surface of the second cavity;

and the second end of the second pipeline is communicated with the second cavity.

Optionally, the heat exchanger further comprises a plurality of first branches and a plurality of second branches;

the plurality of refrigerant channels extend along the axial direction of the accommodating cavity;

each first branch is communicated with the lower part of the accommodating cavity, and each first branch is connected with the lower ends of one or more refrigerant channels

Each second branch is communicated with the upper part of the accommodating cavity, and each second branch is connected with the upper end of one or more refrigerant channels.

Optionally, the heat exchanger further comprises a housing; the heat exchanging part and the refrigerant cavity are arranged in the shell; the shell is a heat-conducting shell.

Optionally, the heat exchanging part further comprises at least one or more coaxially arranged heat exchanging cylinders, and the cylinder wall of each heat exchanging cylinder is provided with one or more refrigerant channels; or the like, or, alternatively,

the heat exchanging part further comprises a plurality of heat exchanging plates, the heat exchanging plates are sequentially arranged on the outer side of the refrigerant cavity at intervals along the circumferential direction of the refrigerant cavity, and one or more refrigerant channels are arranged on each heat exchanging plate.

Optionally, the heat exchanging part is an integrated workpiece and is formed by adopting an extrusion process; or the like, or, alternatively,

the heat exchanging part and the refrigerant cavity form an integral workpiece, and the integral workpiece is formed by adopting an extrusion process; or the heat exchanger is an integrated workpiece and is formed by adopting an extrusion process.

According to a second aspect of the present invention, there is provided an air conditioner comprising an evaporator and a condenser, the evaporator and/or the condenser employing any one of the heat exchangers described above.

In the heat exchanger and the air conditioner, because the heat exchanger is provided with the refrigerant cavity and the heat exchange part are in special connection relation, when the heat exchanger is used as an evaporator, after a gas-liquid mixture enters the heat exchanger through the first pipeline, saturated steam can directly rise in the accommodating cavity to exchange heat with refrigerant or air outside the refrigerant cavity, the refrigerant in the heat exchange part absorbs heat and is gasified, rises and gathers, and is discharged out of the heat exchange part through the second pipeline. Of course, the heat exchanger may also be used as a condenser. For example, the heat exchanger is used as an indoor heat exchanger of an air conditioner, as an evaporator in cooling in summer, and as a condenser in heating in winter.

Furthermore, in the heat exchanger, the gas-liquid spacing structure can be arranged to ventilate through the communication holes, so that the refrigerant liquid is blocked, and the heat exchange performance is further improved.

Further, the inventors of the present invention have also found that: the existing tube-fin evaporator has the disadvantages of large volume, high cost, complicated production flow, large local resistance of a refrigerant pipeline such as an elbow and influence on the improvement of heat exchange performance; and because the heat transfer area is too big, rely on the convection heat transfer intensity that fan disturbance air flows not enough. The heat exchanger with gas-liquid separation of the present invention can solve these problems. The heat exchanger has the advantages that part or all of components of the heat exchanger are integrally extruded and molded, namely integrally molded, and the structure of the heat exchanger can optimize the airflow organization of the heat exchanger, improve the convective heat transfer intensity, reduce the local resistance of a refrigerant pipeline such as an elbow, improve the heat transfer coefficient, achieve the purposes of reducing the production cost, reducing the production flow (integrally extruded and integrally molded), reducing the occupied space and promote the improvement of the energy efficiency of the air conditioner.

Further, the heat exchanger of the present invention may be connected in series or in parallel with a conventional tube and fin heat exchanger depending on the refrigerant system control scheme and climate conditions of the area where the air conditioner is used.

Furthermore, the heat exchanger can be provided with a heat conduction shell and can be used for radiation heat exchange, convection heat exchange can be adopted in the heat conduction shell, and the heat conduction shell bears part of heating or refrigerating load, so that the blowing feeling of a human body can be reduced and the thermal comfort of the human body can be improved on the premise of ensuring the heating or refrigerating capacity; especially, when heating in winter, the heat radiation and heat exchange can obviously increase the thermal comfort of the human body.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic cross-sectional view of a heat exchanger according to one embodiment of the present invention.

Detailed Description

FIG. 1 is a schematic cross-sectional view of a heat exchanger according to one embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a heat exchanger, which includes a refrigerant cavity 10, a first pipeline 11, a second pipeline 12, and a heat exchanging portion 20. An accommodating cavity is defined in the refrigerant cavity 10. The first pipeline 11 has a first end located outside the refrigerant cavity 10 and a second end located at the lower portion of the accommodating cavity. The second pipeline 12 has a first end located outside the refrigerant cavity 10 and a second end located at the upper portion of the accommodating cavity. The heat exchanging part 20 is disposed outside the refrigerant cavity 10, and the heat exchanging part 20 has at least one refrigerant channel 21, one end of each refrigerant channel 21 is communicated with the lower portion of the accommodating cavity, and the other end is communicated with the upper portion of the accommodating cavity. When the heat exchanger is used as an evaporator, the first pipeline 11 may be a refrigerant inlet pipe. When the heat exchanger is used as an evaporator, after a gas-liquid mixture-shaped refrigerant enters the heat exchanger through the first pipeline 11, saturated steam can directly rise in the accommodating cavity to exchange heat with the refrigerant or air outside the refrigerant cavity 10, the refrigerant in the heat exchange part 20 absorbs heat, is gasified, rises and converges, and is discharged out of the heat exchange part 20 through the second pipeline 12, so that the energy efficiency can be improved.

In some preferred embodiments of the present invention, the heat exchanger further includes a gas-liquid separation structure 16 disposed in the receiving chamber to separate the receiving chamber into an upper chamber and a lower chamber, and the gas-liquid separation structure 16 has at least one communication hole communicating the upper chamber and the lower chamber. The second end of the first pipe 11 communicates with the lower chamber. A second end of the second conduit 12 communicates with the upper chamber. The gas-liquid spacing structure 16 may be a spacer plate provided with a communicating hole. Alternatively, the gas-liquid spacing structure 16 may be formed by protrusions extending from the wall of the accommodating chamber, and communication holes are provided between the protrusions or on the protrusions. The gas-liquid spacing structure 16 can be arranged to ventilate through the communication hole, so that the refrigerant liquid is blocked, and the heat exchange performance is further improved.

In some embodiments of the present invention, the refrigerant cavity 10 is located at the center of the heat exchanging portion 20, so that the heat exchanger has a compact structure, a small volume, and is convenient to process. For example, the plurality of refrigerant passages 21 extend in the axial direction of the accommodating chamber. The plurality of refrigerant passages 21 are located in the circumferential direction of the heat exchanging portion 20. Specifically, in some embodiments, the heat exchanging portion 20 further includes at least one or more heat exchanging cylinders coaxially disposed, and a cylinder wall of each heat exchanging cylinder is provided with one or more refrigerant channels 21. Or, in other embodiments, the heat exchanging portion 20 further includes a plurality of heat exchanging plates sequentially disposed at intervals outside the refrigerant cavity 10 along a circumferential direction of the refrigerant cavity 10, and each heat exchanging plate is provided with one or more refrigerant channels 21. Or, in still other embodiments, the heat exchanging portion 20 further includes a plurality of vertically arranged heat exchanging pipes, and each heat exchanging pipe is provided with a refrigerant channel 21.

The heat exchanger also includes a plurality of first branches and a plurality of second branches. Each first branch is communicated with the lower part of the accommodating cavity, and each first branch is connected with the lower ends 211 of one or more refrigerant channels 21. Each second branch is communicated with the upper part of the accommodating cavity, and each second branch is connected with the upper end 212 of one or more refrigerant channels 21.

In some embodiments of the present invention, the lower end of the accommodating chamber is provided with a first chamber 31 communicated with each refrigerant channel 21, and the upper surface of the first chamber 31 is provided with a first communication port 32 communicated with the accommodating chamber. The first communication port 32 may be at a central position of the upper surface of the first cavity 31. Specifically, each first branch is communicated with the first cavity 31, so that gas-liquid separation is better performed, refrigerant flowing is facilitated, and energy efficiency is improved.

In some embodiments of the present invention, the upper end of the accommodating cavity is provided with a second cavity 33 communicated with each refrigerant channel 21, and the lower surface of the second cavity 33 is provided with a second communication port 34 communicated with the accommodating cavity. In particular, each second branch communicates with the second cavity 33. Preferably, the second end of the second pipeline 12 is communicated with the second cavity 33, so as to better perform gas-liquid separation and facilitate the flow of the refrigerant, thereby improving energy efficiency.

In some embodiments of the invention, the heat exchanger further comprises a housing 40. The heat exchanging part 20 and the refrigerant cavity 10 are disposed in the casing 40, so that air flows inside the casing 40, and the heat exchanging efficiency of the heat exchanging part 20 is improved. Preferably, the shell 40 is a heat-conducting shell 40 and can be used for radiation heat exchange, convection heat exchange can be adopted in the heat-conducting shell 40, and the heat-conducting shell 40 bears a part of heating or refrigerating load, so that on the premise of ensuring the heating or refrigerating capacity, the blowing feeling of a human body can be reduced, and the thermal comfort of the human body can be increased; especially, when heating in winter, the heat radiation and heat exchange can obviously increase the thermal comfort of the human body.

In some embodiments of the present invention, the heat exchanging portion 20 is a one-piece member and is formed by an extrusion process. In other embodiments of the present invention, the heat exchanging portion 20 and the refrigerant cavity 10 are integrally formed as a single piece, and are formed by an extrusion process. In still other embodiments of the present invention, the heat exchanger is a one-piece part and is formed using an extrusion process. The heat exchanger has the advantages that the whole or all components of the heat exchanger are integrally extruded and molded, namely integrally molded, the structure of the heat exchanger can optimize the airflow organization of the heat exchanger, the air channels with large intervals can be arranged among the refrigerant channels 21, the convective heat transfer intensity is improved, the local resistance of refrigerant pipelines such as elbows is reduced, the heat transfer coefficient is improved, the purposes of reducing the production cost, reducing the production flow (integrally extruded and integrally molded) and reducing the occupied space are achieved, and the improvement of the energy efficiency of an air conditioner is promoted.

The inner diameter of the first pipe 11 is smaller than the inner diameter of the second pipe 12. When the heat exchanger works, the heat exchanger is used as an indoor heat exchanger, when refrigerating, a gas-liquid two-phase refrigerant enters an accommodating cavity of the heat exchanger from a first pipeline 11 at an axis position, then is divided into a plurality of refrigerant channels 21 through a first cavity 31 and a plurality of first branch paths, and along with the heat absorption and evaporation of the refrigerant in the refrigerant channels 21, the refrigerant enters a second branch path and a second cavity 33, finally enters a second pipeline 12, flows out of the heat exchanger and enters a compressor. At least part of the gaseous refrigerant in the accommodating cavity can directly enter the second cavity 33 upwards, and the liquid refrigerant in the refrigerant from the second branch can also fall into the accommodating cavity downwards. During heating, high-temperature gaseous refrigerant enters the heat exchanger through the second pipeline 12, flows to the heat exchange part 20 at the top of the heat exchanger, releases heat of the refrigerant, is condensed into liquid, and flows to downstream throttling devices and other parts through the first pipeline 11.

The embodiment of the invention also provides an air conditioner which can comprise a compressor, a condenser, a throttling device and an evaporator. The evaporator and/or the condenser employ the heat exchanger of any of the embodiments described above. Preferably, only the evaporator employs the heat exchanger of any of the embodiments described above. Further, one end of the case 40 of the heat exchanger may be provided with a blower fan to force air into the inside of the case 40 to exchange heat with the heat exchanging part 20.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.