Mute air supply device for refrigeration appliance and refrigeration appliance
阅读说明:本技术 用于制冷器具的静音送风装置及制冷器具 (Mute air supply device for refrigeration appliance and refrigeration appliance ) 是由 李孟成 朱小兵 赵斌堂 于 2018-07-16 设计创作,主要内容包括:本发明涉及用于制冷器具的静音送风装置及制冷器具。静音送风装置包括风道盖板组件,设置于蒸发器室和储物间室之间,风道盖板组件包括朝向蒸发器室的后盖板和朝向储物间室且与后盖板相对设置的前盖板,前盖板和后盖板之间形成有一空腔,后盖板上开设有用于连通空腔和蒸发器室的进风口,前盖板上开设有用于连通空腔和储物间室的出风口。空腔配置成其内部容积可受控地扩大和缩小,以在其容积扩大的过程中促使蒸发器室内的气流经进风口流向空腔、在其容积缩小的过程中促使空腔内的气流经出风口流向储物间室。本发明利用空腔容积的变化在空腔的内外之间产生气压差,利用该气压差实现气流的有效流动,不存在风机等扰流部件,噪音较小。(The invention relates to a mute air supply device for a refrigeration appliance and the refrigeration appliance. The silent air supply device comprises an air duct cover plate assembly which is arranged between the evaporator chamber and the storage chamber, the air duct cover plate assembly comprises a rear cover plate facing the evaporator chamber and a front cover plate facing the storage chamber and arranged opposite to the rear cover plate, a cavity is formed between the front cover plate and the rear cover plate, an air inlet used for communicating the cavity with the evaporator chamber is formed in the rear cover plate, and an air outlet used for communicating the cavity with the storage chamber is formed in the front cover plate. The cavity is configured to controllably expand and contract its internal volume to promote airflow within the evaporator chamber through the air inlet to the cavity during expansion of its volume and to promote airflow within the cavity through the air outlet to the storage compartment during contraction of its volume. The invention utilizes the change of the volume of the cavity to generate the air pressure difference between the inside and the outside of the cavity, utilizes the air pressure difference to realize the effective flow of the air flow, does not have turbulence components such as a fan and the like, and has smaller noise.)
1. A silent air supply device for a refrigeration appliance, the refrigeration appliance comprises a box body, a storage chamber and an evaporator chamber positioned at one side of the storage chamber are limited in the box body, the silent air supply device is characterized in that,
the silent air supply device comprises an air duct cover plate assembly, the air duct cover plate assembly is arranged between the evaporator chamber and the storage chamber and comprises a rear cover plate facing the evaporator chamber and a front cover plate facing the storage chamber and arranged opposite to the rear cover plate, a cavity is formed between the front cover plate and the rear cover plate, an air inlet used for communicating the cavity with the evaporator chamber is formed in the rear cover plate, and an air outlet used for communicating the cavity with the storage chamber is formed in the front cover plate; wherein
The cavity is configured to controllably expand and contract in its internal volume to cause airflow within the evaporator chamber through the air inlet to the cavity during expansion of its volume and to cause airflow within the cavity through the air outlet to the storage compartment during contraction of its volume.
2. A silent air blowing device as claimed in claim 1,
an elastic diaphragm is arranged on the rear cover plate, and a volume variable region of the cavity is formed between the elastic diaphragm and the front cover plate; and is
The silent air blowing device further comprises a driving mechanism configured to controllably cause the elastic diaphragm to be reciprocally switched between a relaxed state and a contracted state to
Gradually expanding the volume of the cavity during the process that the elastic membrane is switched from the contraction state to the relaxation state, so that the air flow in the evaporator chamber is promoted to flow to the cavity through the air inlet;
and the volume of the cavity is gradually compressed in the process that the elastic membrane is switched from the relaxation state to the contraction state, so that the air in the cavity is promoted to flow to the storage compartment through the air outlet.
3. The silent air blower according to claim 2, wherein the drive mechanism comprises:
the iron core is arranged on the front cover plate and is positioned in the cavity; and
a coil wound on the core and configured to: when the power supply is switched on, a magnetic field is generated to magnetize the iron core, so that the elastic membrane is attracted to be contracted to the contracted state; allowing the elastic diaphragm to return to a relaxed state under its own elastic restoring force when the power supply is disconnected.
4. A silent air blowing device as claimed in claim 2,
the number of the air outlets is multiple, and the air outlets are distributed on the front cover plate and are set to enable each air outlet to have the same air outlet amount in the contraction process of switching the elastic membrane from the diastole state to the contraction state.
5. A silent air blowing device as claimed in claim 1,
the air inlet is provided with a first one-way valve, and the first one-way valve is configured to be opened in the process of expanding the volume of the cavity and be closed in the process of reducing the volume of the cavity so as to only allow the airflow in the evaporator chamber to flow to the cavity and prevent the airflow in the cavity from flowing to the evaporator chamber.
6. A silent air blowing device as claimed in claim 1,
the air outlet is provided with a second one-way valve, and the second one-way valve is configured to close the air outlet in the process of expanding the volume of the cavity and open the air outlet in the process of reducing the volume of the cavity so as to prevent the airflow in the storage compartment from flowing to the cavity and only allow the airflow in the cavity to flow to the storage compartment.
7. A silent air blowing device as claimed in claim 1,
the refrigeration appliance also comprises an evaporator arranged in the evaporator chamber and used for providing cooling airflow; and is
The mute air supply device is positioned on the front side of the evaporator.
8. A silent air blowing device as claimed in claim 1,
the box body is internally provided with another storage chamber positioned above the storage chamber and an air supply duct positioned on one side of the other storage chamber, and the lower end of the air supply duct is selectively communicated with the cavity through an electric control air door so as to selectively allow the air flow in the cavity to flow into the air supply duct and then flow to the other storage chamber.
9. A silent air blowing device as claimed in claim 1,
the silent air supply device and the bottom wall of the box body below the silent air supply device are arranged at intervals, so that an air return opening for returning air flow in the storage compartment to the evaporator chamber is formed between the bottom of the silent air supply device and the bottom wall of the box body.
10. A refrigeration appliance, comprising:
the refrigerator comprises a box body, a storage chamber and an evaporator chamber, wherein the storage chamber and the evaporator chamber are defined in the box body;
the evaporator is arranged in the evaporator chamber and is used for providing cooling air flow for the storage compartment; and
the silent air blower as claimed in any one of claims 1 to 9, disposed between the evaporator chamber and the storage compartment for promoting the cooling air flow in the evaporator chamber to the storage compartment.
Technical Field
The invention relates to refrigeration equipment, in particular to a mute air supply device for a refrigeration appliance and the refrigeration appliance.
Background
The traditional air-cooled refrigerator mainly utilizes a fan to blow cold air into a storage room of the refrigerator, and hot air in the storage room is replaced to achieve the purpose of reducing the indoor temperature of the storage room. Because the fan is used for driving the air in the refrigerator body to flow, the indoor temperature cooling speed of the storage room of the refrigerator is relatively high, the defrosting can be automatically realized, and the use is very convenient.
However, as the demand for the capacity of the refrigerator increases, the rotational speed and the diameter of the fan need to be increased to meet the demand for freezing, which increases the noise generated during the operation of the refrigerator. Meanwhile, the air volume of the air supply openings on the fan cover plate is different, the air volume of the air supply openings around the fan is large, the air volume of the air supply openings far away from the fan is small, and therefore the temperature of different areas in a storage room is different. Moreover, the fan is usually installed on a fan cover plate above the evaporator, the fan occupies a certain space of the evaporator chamber, further expansion of the size of the evaporator is affected, and the heat exchange amount and the size of the fan need to be comprehensively considered when the evaporator is selected, so that limitation is large. In addition, the structure of the fan cover plate for installing the fan is very complex, and the cost is high.
Disclosure of Invention
It is an object of a first aspect of the present invention to overcome at least one of the disadvantages of the prior art and to provide a quiet air supply arrangement for a refrigeration appliance that is less noisy.
It is a further object of the first aspect of the present invention to simplify the construction of the silent air delivery device.
It is a further object of the first aspect of the present invention to reduce the space occupied by the silent air delivery devices.
The invention aims at providing a refrigeration appliance with the mute air supply device.
According to a first aspect of the invention, the invention provides a silent air supply device for a refrigeration appliance, the refrigeration appliance comprises a box body, a storage compartment and an evaporator chamber are defined in the box body, the evaporator chamber is positioned at the rear side of the storage compartment,
the silent air supply device comprises an air duct cover plate assembly, the air duct cover plate assembly is arranged between the evaporator chamber and the storage chamber and comprises a rear cover plate facing the evaporator chamber and a front cover plate facing the storage chamber and arranged opposite to the rear cover plate, a cavity is formed between the front cover plate and the rear cover plate, an air inlet used for communicating the cavity with the evaporator chamber is formed in the rear cover plate, and an air outlet used for communicating the cavity with the storage chamber is formed in the front cover plate; wherein
The cavity is configured to controllably expand and contract in its internal volume to cause airflow within the evaporator chamber through the air inlet to the cavity during expansion of its volume and to cause airflow within the cavity through the air outlet to the storage compartment during contraction of its volume.
Optionally, an elastic membrane is arranged on the rear cover plate, and a volume-variable region of the cavity is formed between the elastic membrane and the front cover plate; and is
The silent air blowing device further comprises a driving mechanism configured to controllably cause the elastic diaphragm to be reciprocally switched between a relaxed state and a contracted state to
Gradually expanding the volume of the cavity during the process that the elastic membrane is switched from the contraction state to the relaxation state, so that the air flow in the evaporator chamber is promoted to flow to the cavity through the air inlet;
and the volume of the cavity is gradually compressed in the process that the elastic membrane is switched from the relaxation state to the contraction state, so that the air in the cavity is promoted to flow to the storage compartment through the air outlet.
Optionally, the drive mechanism comprises:
the iron core is arranged on the front cover plate and is positioned in the cavity; and
a coil wound on the core and configured to: when the power supply is switched on, a magnetic field is generated to magnetize the iron core, so that the elastic membrane is attracted to be contracted to the contracted state; allowing the elastic diaphragm to return to a relaxed state under its own elastic restoring force when the power supply is disconnected.
Optionally, the number of the air outlets is multiple, and the distribution of the multiple air outlets on the front cover plate is set to make each air outlet have the same air outlet amount in the contraction process of switching the elastic membrane from the diastole state to the contraction state.
Optionally, a first check valve is disposed at the air inlet, and the first check valve is configured to open the air inlet during the volume expansion of the cavity and close the air inlet during the volume reduction of the cavity, so as to only allow the airflow in the evaporator chamber to flow to the cavity and prevent the airflow in the cavity from flowing to the evaporator chamber.
Alternatively,
the air outlet is provided with a second one-way valve, and the second one-way valve is configured to close the air outlet in the process of expanding the volume of the cavity and open the air outlet in the process of reducing the volume of the cavity so as to prevent the airflow in the storage compartment from flowing to the cavity and only allow the airflow in the cavity to flow to the storage compartment.
Optionally, the refrigeration appliance further comprises an evaporator disposed in the evaporator chamber for providing a cooling airflow; and is
The mute air supply device is positioned on the front side of the evaporator.
Optionally, another storage compartment above the storage compartment and an air supply duct behind the other storage compartment are further defined in the box body, and a lower end of the air supply duct is selectively communicated with the cavity through an electrically controlled damper to selectively allow the air flow in the cavity to flow into the air supply duct so as to flow to the other storage compartment.
Optionally, the silent air supply device is arranged at an interval with the bottom wall of the box body below the silent air supply device, so that an air return opening for returning the air flow in the storage compartment to the evaporator chamber is formed between the bottom of the silent air supply device and the bottom wall of the box body.
According to a second aspect of the invention, there is also provided a refrigeration appliance comprising:
the refrigerator comprises a box body, a storage chamber and an evaporator chamber, wherein the storage chamber and the evaporator chamber are defined in the box body;
the evaporator is arranged in the evaporator chamber and is used for providing cooling air flow for the storage compartment; and
the silent air supply device is arranged between the evaporator chamber and the storage chamber and used for promoting the cooling air flow in the evaporator chamber to flow to the storage chamber.
The volume-variable cavity is specially designed in the mute air supply device, the aim of continuously supplying air to the storage chamber is fulfilled by utilizing the process of alternately expanding and reducing the internal volume of the cavity, and the air supply fan in the prior art is replaced, so that the larger noise caused by air disturbance due to the rotation of the fan impeller is avoided.
Furthermore, the invention utilizes the elastic membrane and the front cover plate to form a variable-volume area of the cavity, and the structure is simpler. Furthermore, the elastic diaphragm is driven to expand or contract by the driving mechanism with the iron core and the coil, so that current is only required to be periodically introduced into the coil, the structure is simple, the control is easy, the realization is easy, and the cost is reduced.
Furthermore, the mute air supply device is positioned at the front side of the evaporator of the refrigeration appliance, so that the mute air supply device does not occupy the space above the evaporator like the existing fan, the size of the evaporator is not influenced or limited, and the size of the evaporator can be selected or adjusted according to the actual cooling capacity requirement of the storage chamber.
Furthermore, the mute air supply device comprises a plurality of air outlets, and the distribution of the air outlets on the front cover plate is set to enable each air outlet to have the same air output amount in the contraction process of the elastic membrane. Therefore, the air flow sent into the storage room can be ensured to be more uniform, so that the refrigerating and/or freezing storage effect in the storage room is improved.
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 block diagram of a refrigeration appliance according to one embodiment of the present invention;
fig. 2 and 3 are schematic structural diagrams of different states of a silent air blowing device for a refrigeration appliance according to an embodiment of the present invention;
FIG. 4 is a schematic view of the direction of airflow within a refrigeration appliance according to one embodiment of the present invention;
fig. 5 is a schematic structural view of a refrigeration appliance according to another embodiment of the present invention.
Detailed Description
The invention firstly provides a mute air supply device for a refrigeration appliance. Fig. 1 is a schematic configuration diagram of a refrigeration appliance according to an embodiment of the present invention. The
Fig. 2 and 3 are schematic structural diagrams of different states of a silent air blowing device for a refrigeration appliance according to an embodiment of the present invention, fig. 4 is a schematic diagram of an airflow flowing direction in the refrigeration appliance according to an embodiment of the present invention, and a curved hollow arrow in fig. 4 indicates the airflow flowing direction. Referring to fig. 1 to 4, the
In particular, the
The volume-
In some embodiments of the present invention, an
Further, the
Specifically, when the
In alternative embodiments of the invention, the
In some embodiments of the present invention, the
Specifically, one end of the
In some alternative embodiments of the present invention, the driving means 30 for driving the
In some embodiments of the present invention, the
In some embodiments of the present invention, the number of the
Specifically, the
In some alternative embodiments, the distribution of the plurality of
In some embodiments of the present invention, a first one-
That is, the present invention can only allow the airflow in the
Specifically, the
In some embodiments of the invention, the
Further, the entire silent air supply device is substantially in the shape of a strip or a plate, so that the silent air supply device occupies a very small space in the
Fig. 5 is a schematic structural view of a refrigeration appliance according to another embodiment of the present invention. In some embodiments of the present invention, another
Specifically, the top of the
Further, the
The invention also provides a refrigeration appliance, and the
In particular, the
As described above, the
It will be appreciated by those skilled in the art that the
It should be understood by those skilled in the art that terms such as "upper", "lower", "inner", "outer", "top", "bottom", "front", "rear", etc. used in the embodiments of the present invention to indicate orientation or positional relationship are based on the actual usage state of the
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.