Secondary refrigeration heating and cooling device for air conditioner

Abstract

This utility model relates to the field of air conditioning technology, and in particular to a secondary cooling and heating device for air conditioners. The secondary cooling and heating device for air conditioners includes a housing, a control board disposed within the housing, and at least one refrigerant circuit. The refrigerant circuit includes a first pipe, an electronic expansion valve, and a second pipe connected in sequence, and also includes a one-way valve arranged in parallel with the electronic expansion valve. The medium inlet direction of the one-way valve is opposite to the medium inlet direction of the electronic expansion valve. The control board is disposed above the refrigerant circuit and electrically connected to the electronic expansion valve for controlling the operation of the refrigerant circuit. This utility model's secondary cooling and heating device is small in size and is used for secondary throttling at the indoor unit to improve cooling or heating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a secondary cooling and heating device for air conditioning. Background Technology

[0002] An air conditioner consists of an outdoor unit and an indoor unit. During operation, the refrigerant is throttled at the outdoor unit before being delivered to the indoor unit to exchange heat with the indoor air. However, in some applications, due to the large size of the outdoor unit and installation constraints, it must be installed far from the indoor unit. As the refrigerant travels through pipes to the indoor unit, it exchanges heat with the external environment, often resulting in poor cooling performance.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a secondary cooling and heating device for air conditioners, which aims to solve the technical problem of poor cooling effect after the air conditioner refrigerant is transported over long distances.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a secondary cooling and heating device for air conditioning, including a housing, a control board disposed within the housing, and at least one refrigerant circuit; the refrigerant circuit includes a first pipe, an electronic expansion valve, and a second pipe connected in sequence, and also includes a one-way valve disposed in parallel with the electronic expansion valve; the medium entry direction of the one-way valve is opposite to the medium entry direction of the electronic expansion valve; the control board is disposed above the refrigerant circuit and electrically connected to the electronic expansion valve for controlling the operation of the refrigerant circuit.

[0007] The secondary refrigeration and heating device for air conditioning, wherein the refrigerant circuit further includes a screen filter, which is disposed on the first pipe.

[0008] The secondary refrigeration and heating device for air conditioning includes a refrigerant circuit that further includes a first tee pipe and a second tee pipe. The first tee pipe is connected to a first pipe, the inlet end of an electronic expansion valve, and the outlet end of a one-way valve, respectively. The second tee pipe is connected to a second pipe, the outlet end of an electronic expansion valve, and the inlet end of a one-way valve, respectively.

[0009] The aforementioned secondary cooling and heating device for air conditioning includes a housing comprising a detachably connected upper housing and a lower housing; the refrigerant circuit and the control board are respectively fixed to the lower housing; one end of the first pipe and the second pipe respectively passes through the peripheral wall of the lower housing.

[0010] The aforementioned secondary cooling and heating device for air conditioning includes a plurality of pipe fixing components on the lower shell, which are used to fix a first pipe or a second pipe.

[0011] The aforementioned secondary cooling and heating device for air conditioning includes a plurality of plate fixing components on the lower shell; a plurality of screw holes on the plate fixing components; a plurality of through holes corresponding to the screw holes on the control plate; and the control plate being fixedly connected to the plate fixing components by screws.

[0012] The aforementioned secondary cooling and heating device for air conditioning includes a pipe fixing component comprising a base and a pipe sleeve; the pipe sleeve is fixed to the base by screws; the pipe sleeve includes an elastic sleeve and two connecting pieces respectively disposed at both ends of the elastic sleeve; the connecting pieces are provided with mounting holes; the two connecting pieces and the two mounting holes are overlapped; the screws pass through the two mounting holes and are screwed to the base.

[0013] The aforementioned secondary refrigeration and heating device for air conditioning includes two refrigerant circuits inside the housing, and the electronic expansion valves of the two refrigerant circuits are electrically connected to the control board respectively.

[0014] Beneficial effects: This utility model provides a secondary cooling and heating device for air conditioning. The device has at least one refrigerant circuit and a control board. Its overall size is small, and it is less restricted by installation space, allowing it to be installed next to the indoor unit. The internal refrigerant circuit system can perform secondary throttling on the refrigerant after long-distance transport, ensuring the unit's heating and cooling performance. Attached Figure Description

[0015] Figure 1 An exploded view of the secondary refrigeration and heating device provided by this utility model.

[0016] Figure 2 This is a schematic diagram of the fluorine circuit.

[0017] Figure 3 This is a schematic diagram of the lower shell structure.

[0018] Figure 4 This is a structural schematic diagram of a pipe fastener.

[0019] Explanation of main component symbols: 1-House, 2-Control board, 3-Freon circuit, 31-First pipe, 32-Electronic expansion valve, 33-Second pipe, 34-Check valve, 35-Screen filter, 36-First tee pipe, 37-Second tee pipe, 11-Lower shell, 12-Upper shell, 13-Pipe fastener, 14-Plate fastener, 131-Base, 132-Pipe sleeve, 133-Elastic sleeve, 134-Connecting piece. Detailed Implementation

[0020] This utility model provides a secondary cooling and heating device for air conditioning. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0022] Please see Figure 1 and Figure 2 This utility model provides a secondary cooling and heating device for air conditioning, including a housing 1, a control board 2 disposed within the housing 1, and at least one refrigerant circuit 3; the refrigerant circuit 3 includes a first pipe 31, an electronic expansion valve 32, and a second pipe 33 connected in sequence, and also includes a one-way valve 34 disposed in parallel with the electronic expansion valve 32; the medium entry direction of the one-way valve 34 is opposite to the medium entry direction of the electronic expansion valve 32; the control board 2 is disposed above the refrigerant circuit 3 and electrically connected to the electronic expansion valve 32 for controlling the operation of the refrigerant circuit 3.

[0023] The operation mode of the secondary refrigeration and heating device of this utility model is as follows:

[0024] When refrigeration is in progress, the refrigerant flows from the first pipe 31 to the electronic expansion valve 32, and then flows out from the second pipe 33. Since the medium inflow direction of the check valve 34 is opposite to that of the electronic expansion valve 32, when refrigeration is in progress, the refrigerant flowing out from the first pipe 31 will not enter the check valve 34, but will only enter the electronic expansion valve 32. Furthermore, under pressure, when the refrigerant comes out from the electronic expansion valve 32, it will not enter the check valve 34.

[0025] When heating is in operation, the electronic expansion valve 32 is closed under the control of the control panel 2, and the refrigerant enters from the second pipe 33, passes through the one-way valve 34, and then flows out from the first pipe 31.

[0026] Compared to an air conditioner outdoor unit, the secondary cooling and heating device of this utility model has a simpler internal structure and a smaller overall size. Therefore, it is less affected by the size of the installation space and can be installed close to the indoor unit to perform secondary throttling and ensure the cooling effect.

[0027] Please see Figure 2 In one embodiment, the refrigerant circuit 3 further includes a screen filter 35, which is disposed on the first pipe 31. The screen filter 35 is used to filter out impurities and dirt in the refrigeration system, preventing these impurities from entering the electronic expansion valve 32, ensuring smooth refrigerant flow, and avoiding blockages that could affect the normal operation of the air conditioner.

[0028] Please see Figure 2 In one embodiment, the fluorine circuit 3 further includes a first three-way pipe 36 and a second three-way pipe 37; the first three-way pipe 36 is connected to the first pipeline 31, the inlet end of the electronic expansion valve 32, and the outlet end of the one-way valve 34, respectively; the second three-way pipe 37 is connected to the second pipeline 33, the outlet end of the electronic expansion valve 32, and the inlet end of the one-way valve 34, respectively. Specifically, the first three-way pipe 36 and the second three-way pipe 37 are also connected to the electronic expansion valve 32 and the one-way valve 34 by connecting pipes. The first three-way pipe 36 and the second three-way pipe 37 are located upstream and downstream of the electronic expansion valve 32 and the one-way valve 34, respectively, so that the electronic expansion valve 32 and the one-way valve 34 are arranged in parallel.

[0029] Please see Figure 1 In one embodiment, the housing 1 includes a detachably connected upper housing 12 and a lower housing 11; the refrigerant circuit 3 and the control board 2 are respectively fixed to the lower housing 11; one end of the first pipe 31 and the second pipe 33 respectively passes through the peripheral wall of the lower housing 11. During maintenance, the control board 2 can be exposed by opening the upper housing 12, making maintenance convenient.

[0030] Please see Figure 3 In one embodiment, the lower housing 11 is provided with multiple pipe fasteners 13, which are used to fix the first pipe 31 or the second pipe 33. Specifically, the electronic expansion valve 32, the one-way valve 34, and the screen filter 35 are all fixed to the lower housing 11. By further fixing multiple pipes with the pipe fasteners 13, it can be ensured that the entire pipeline maintains structural stability during use and will not leak.

[0031] Please see Figure 1 and Figure 3In one embodiment, the lower shell 11 is provided with multiple plate fixing members 14; the plate fixing members 14 are provided with multiple screw holes; the control plate 2 is provided with multiple through holes corresponding to the screw holes; the control plate 2 is fixedly connected to the plate fixing members 14 by screws. Specifically, the height of the plate fixing members 14 is greater than the height of the fluorine circuit 3, so that after the control plate 2 is installed, it is mounted above the fluorine circuit 3, forming an upper and lower layer structure. In this way, the thickness of the device is slightly increased, but the overall footprint is smaller, and it is less restricted by the installation space.

[0032] Please see Figure 4 In one embodiment, the pipe fastener 13 includes a base 131 and a pipe sleeve 132; the pipe sleeve 132 is fixed to the base 131 by screws; the pipe sleeve 132 includes an elastic sleeve 133 and two connecting pieces 134 respectively disposed at both ends of the elastic sleeve 133; each connecting piece 134 is provided with a mounting hole; the two connecting pieces 134 and the two mounting holes are overlapped; the screws pass through the two mounting holes and are screwed to the base 131. Specifically, the elastic sleeve 133 can be made of iron sheet or rigid plastic. Because the elastic sleeve 133 is arc-shaped, it can form elasticity itself. During installation, the elastic sleeve 133 is first opened and then put on the pipe. After being put on, the elastic sleeve 133 will automatically spring back, the two connecting pieces 134 overlap, and the two mounting holes correspond.

[0033] Please see Figure 1 In one embodiment, the housing 1 is provided with two refrigerant circuits 3, and the electronic expansion valves 32 of the two refrigerant circuits 3 are electrically connected to the control board 2 respectively. In this embodiment, the secondary cooling and heating device can be connected to two outdoor units respectively, serving multiple purposes and reducing installation space.

[0034] In summary, this utility model provides a secondary cooling and heating device. This device includes a refrigerant circuit 3 and a control board 2 located above the refrigerant circuit 3. It boasts high space utilization, a small overall size, and is easy to install. It can connect to one or more outdoor air conditioning units and be installed next to the indoor unit for secondary throttling, improving cooling or heating performance and compensating for the shortcomings in some scenarios where the distance between the outdoor and indoor units results in poor cooling or heating effects.

[0035] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A secondary refrigeration heating device for an air conditioner, characterized by, The device includes a housing, a control board disposed within the housing, and at least one refrigerant circuit. The refrigerant circuit includes a first pipe, an electronic expansion valve, and a second pipe connected in sequence, and also includes a one-way valve disposed in parallel with the electronic expansion valve. The medium inlet direction of the one-way valve is opposite to the medium inlet direction of the electronic expansion valve. The control board is disposed above the refrigerant circuit and is electrically connected to the electronic expansion valve for controlling the operation of the refrigerant circuit.

2. The secondary cooling and heating device for air conditioning according to claim 1, characterized in that, The fluorine circuit also includes a screen filter, which is installed on the first pipe.

3. The secondary cooling and heating device for air conditioning according to claim 1, characterized in that, The fluorine circuit also includes a first tee pipe and a second tee pipe; the first tee pipe is connected to the first pipeline, the inlet end of the electronic expansion valve and the outlet end of the check valve respectively; the second tee pipe is connected to the second pipeline, the outlet end of the electronic expansion valve and the inlet end of the check valve respectively.

4. The secondary cooling and heating device for air conditioning according to claim 1, characterized in that, The housing includes a detachably connected upper shell and a lower shell; the fluorine circuit and the control board are respectively fixed to the lower shell; one end of the first pipe and the second pipe respectively passes through the peripheral wall of the lower shell.

5. The secondary cooling and heating device for air conditioning according to claim 4, characterized in that, The lower shell is provided with multiple pipe fasteners, which are used to fix the first pipe or the second pipe.

6. The secondary cooling and heating device for air conditioning according to claim 4, characterized in that, The lower shell is provided with multiple plate fixing components; the plate fixing components are provided with multiple screw holes; the control plate is provided with multiple through holes corresponding to the screw holes; the control plate is fixedly connected to the plate fixing components by screws.

7. The secondary cooling and heating device for air conditioning according to claim 5, characterized in that, The pipe fastener includes a base and a pipe sleeve; the pipe sleeve is fixed to the base by screws; the pipe sleeve includes an elastic sleeve and two connecting pieces respectively disposed at both ends of the elastic sleeve; the connecting pieces are provided with mounting holes; the two connecting pieces and the two mounting holes are overlapped; the screws pass through the two mounting holes and are screwed to the base.

8. The secondary cooling and heating device for air conditioning according to claim 1, characterized in that, The housing contains two fluorine circuits, and the electronic expansion valves of the two fluorine circuits are electrically connected to the control board.

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