Electric control box liquid cooling structure of modular air conditioner

Abstract

The utility model discloses an electric control box liquid cooling structure of a modular air conditioner, which comprises a refrigerant pipeline attached to the heat dissipation end of an electric control box, the input end of the refrigerant pipeline is communicated with an inflow one-way valve, the output end of the refrigerant pipeline is communicated with an electronic expansion valve, and the electronic expansion valve is communicated with an outflow one-way valve through a connecting pipe. The refrigerant pipeline is connected to a refrigerant circulation loop of the module air conditioning unit in parallel through the inflow one-way valve and the outflow one-way valve, and the refrigerant circulation loop of the unit provides a low-temperature refrigerant for the refrigerant pipeline so as to carry out liquid cooling heat dissipation on the electric control box. According to the electric control box liquid cooling structure of the module air conditioner, the refrigerant pipeline is connected to the refrigerant circulation loop of the module air conditioner unit in parallel, and by means of the characteristics of the inflow one-way valve and the outflow one-way valve, a low-temperature refrigerant can only enter the refrigerant pipeline to absorb heat generated by the electric control box; and the medium-high-temperature refrigerant returns to a refrigerant circulation loop of the unit through the electronic expansion valve, so that the advantage of improving the heat dissipation effect of the electric control box is achieved.

Description

Technical Field

[0001] The utility model relates to the field of modular air conditioners, in particular to a liquid cooling structure of an electric control box of a modular air conditioner. Background Art

[0002] As people's requirements for life become higher and higher, the scope and frequency of air conditioning use are increasing. With the development of technology, more and more air conditioners are variable frequency air conditioners. Variable frequency air conditioners generally require the use of electric control boxes to facilitate effective control of various components inside the air conditioner.

[0003] After the electric control box has been used for a period of time, it is easy to heat up due to the large number of modules integrated inside. As the temperature of the electronic chip inside the electric control box increases, it not only affects the processing rate, but also greatly reduces the service life. Based on this, a heat sink is often provided on the electric control box in the prior art. However, after long-term research, the inventor found that when the air conditioner is operated frequently, the heat dissipation efficiency of the heat sink cannot meet the requirements at all, and the heat dissipation effect of the heat sink is difficult to meet the requirements.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a liquid cooling structure for an electric control box of a modular air conditioner, aiming to solve the technical problem in the prior art that the heat dissipation effect of the heat sink of the electric control box cannot meet the heat dissipation requirements.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A liquid cooling structure for an electric control box of a modular air conditioner, comprising a refrigerant pipe fitted on the heat dissipation end of the electric control box, wherein the input end of the refrigerant pipe is connected to an inflow check valve, the output end of the refrigerant pipe is connected to an electronic expansion valve, the electronic expansion valve is connected to an outflow check valve via a connecting pipe, the refrigerant pipe is connected in parallel to a refrigerant circulation circuit of a modular air conditioning unit via the inflow check valve and the outflow check valve, the refrigerant circulation circuit of the modular air conditioning unit provides low-temperature refrigerant to the refrigerant pipe to perform liquid cooling on the electric control box.

[0008] The liquid cooling structure of the electronic control box of the modular air conditioner, wherein the inflow check valve includes a first check valve and a second check valve, the first check valve and the second check valve are connected to the input end of the refrigerant pipeline via a three-way joint, and the first check valve and the second check valve are used to control the low-temperature refrigerant to enter the refrigerant pipeline.

[0009] The liquid cooling structure of the electronic control box of the modular air conditioner, wherein the outflow one-way valve includes a third one-way valve and a fourth one-way valve, the third one-way valve and the fourth one-way valve are connected to the output end of the connecting pipe via a three-way joint, and the input end of the connecting pipe is connected to the output end of the electronic expansion valve.

[0010] The liquid cooling structure of the electronic control box of the modular air conditioner, wherein the first one-way valve and the third one-way valve are connected between a heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint; the second one-way valve and the fourth one-way valve are connected between another heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint.

[0011] The liquid cooling structure of the electric control box of the modular air conditioner is characterized in that a first filter is provided between the refrigerant pipeline and the electronic expansion valve, and a second filter is provided between the electronic expansion valve and the connecting pipe.

[0012] The liquid cooling structure of the electric control box of the modular air conditioner further includes a mounting member, which is connected to the outer wall of the heat dissipation end of the electric control box and is used to fix the refrigerant pipeline.

[0013] The liquid cooling structure of the electric control box of the modular air conditioner further includes a fixing member, which is connected to the outer side wall of the heat dissipation end of the electric control box and is used to install and fix the electronic expansion valve.

[0014] Beneficial effects:

[0015] The utility model provides a liquid cooling structure of an electric control box of a modular air conditioner, comprising a refrigerant pipe fitted on the heat dissipation end of the electric control box, the input end of the refrigerant pipe is connected to an inflow check valve, the output end of the refrigerant pipe is connected to an electronic expansion valve, the electronic expansion valve is connected to an outflow check valve via a connecting pipe, the refrigerant pipe is connected to the refrigerant circulation circuit of the modular air conditioner unit in parallel via the inflow check valve and the outflow check valve, and the refrigerant circulation circuit of the modular air conditioner unit provides the refrigerant pipe with low-temperature refrigerant to liquid-cool the electric control box. The liquid cooling structure of the electric control box of the modular air conditioner is connected to the refrigerant circulation circuit of the modular air conditioner unit by setting the refrigerant pipe in parallel, and utilizing the characteristics of the inflow check valve and the outflow check valve so that the low-temperature refrigerant can only enter the refrigerant pipe to absorb the heat generated by the electric control box, and returns to the refrigerant circulation circuit of the unit through the electronic expansion valve after becoming a medium-high temperature refrigerant, thereby achieving the advantage of improving the heat dissipation effect of the electric control box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a modular air-conditioning unit provided by the utility model;

[0017] Figure 2A three-dimensional structural schematic diagram of the liquid cooling structure of the electric control box of the modular air conditioner provided by the utility model;

[0018] Figure 3 This is a schematic diagram of the main structure of the liquid cooling structure of the electric control box of the modular air conditioner provided by the utility model;

[0019] Figure 4 A flow chart of a refrigerant circulation circuit of a liquid cooling structure of an electric control box of a modular air conditioner provided by the utility model;

[0020] Figure 5 A flow chart of the first refrigerant circulation loop of the liquid cooling structure of the electric control box of the modular air conditioner provided by the utility model;

[0021] Figure 6 This is a flow chart of the second refrigerant circulation loop of the liquid cooling structure of the electric control box of the modular air conditioner provided by the utility model.

[0022] Reference numerals:

[0023] 1—Refrigerant pipe 2—Electronic expansion valve 3—Inflow check valve

[0024] 4—Outflow check valve 5—Connecting pipe 6—First filter

[0025] 7—Second filter 8—Mounting part 9—Fixer

[0026] 31 - first one-way valve 32 - second one-way valve 41 - third one-way valve

[0027] 42—Fourth one-way valve. DETAILED DESCRIPTION

[0028] The utility model provides a liquid cooling structure of an electric control box of a modular air conditioner. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present utility model. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0030] The refrigerant circulation circuit of the modular air-conditioning unit includes a compressor, a first heat exchanger, a second heat exchanger and an expansion valve connected via a pipeline. The first heat exchanger and the second heat exchanger are used as an evaporator or a condenser according to actual cooling and heating conditions.

[0031] See also Figures 1 to 6 As shown, the utility model provides a liquid cooling structure of an electric control box of a modular air conditioner, wherein the utility model comprises a refrigerant pipe 1 which is fitted and arranged at the heat dissipation end of the electric control box, the input end of the refrigerant pipe 1 is connected with an inflow check valve 3, the output end of the refrigerant pipe 1 is connected with an electronic expansion valve 2, the electronic expansion valve 2 is connected with an outflow check valve 4 via a connecting pipe 5, the refrigerant pipe 1 is connected in parallel to the refrigerant circulation circuit of the modular air conditioner unit via the inflow check valve 3 and the outflow check valve 4, and the refrigerant circulation circuit of the modular air conditioner unit provides the refrigerant pipe 1 with low-temperature refrigerant to liquid-cool the electric control box. In this embodiment, the refrigerant pipe 1 is laid in a U-shape or an S-shape on the outer wall of the box body at the heat dissipation end of the electric control box. The liquid cooling principle is as follows: in the refrigerant circulation loop of the modular air-conditioning unit, the low-temperature and low-pressure liquid refrigerant output by the expansion valve enters the refrigerant pipe 1 through the inflow check valve 3. When flowing through the refrigerant pipe 1, it absorbs the heat emitted by the electric control box and takes it away, cooling the electric control box. After the refrigerant absorbs heat and heats up, it enters the electronic expansion valve 2 for throttling, pressure reduction and temperature reduction, and then flows back to the refrigerant circulation loop of the unit from the outflow check valve 4. The inflow check valve 3 and the outflow check valve 4 prevent high-temperature refrigerant from entering the refrigerant pipe 1, ensuring that the refrigerant entering the refrigerant pipe 1 is always in a low-temperature state, thereby achieving heat dissipation for the electric control box. Compared with the heat dissipation methods of air cooling and heat sinks, the heat dissipation effect is better.

[0032] See also Figure 1 to Figure 2As shown, the inflow check valve 3 includes a first check valve 31 and a second check valve 32, and the first check valve 31 and the second check valve 32 are connected to the input end of the refrigerant pipe 1 via a three-way joint, and the first check valve 31 and the second check valve 32 are used to control the low-temperature refrigerant to enter the refrigerant pipe 1. In this embodiment, the first check valve 31 and the second check valve 32 are respectively connected to the two ends of the expansion valve in the refrigerant circulation circuit of the unit, so as to ensure that the refrigerant entering the refrigerant pipe 1 is low-temperature regardless of whether the modular air-conditioning unit is cooling or heating, so as to achieve continuous cooling of the electric control box and improve the heat dissipation effect.

[0033] See also Figure 1 to Figure 2 As shown, the outflow check valve 4 includes a third check valve 41 and a fourth check valve 42, and the third check valve 41 and the fourth check valve 42 are connected to the output end of the connecting pipe 5 via a three-way joint, and the input end of the connecting pipe 5 is connected to the output end of the electronic expansion valve 2. In this embodiment, the third check valve 41 and the fourth check valve 42 are respectively connected to the two ends of the expansion valve in the refrigerant circulation circuit of the unit, so that the refrigerant that absorbs the heat of the electronic control box returns to the refrigerant circulation circuit of the unit after throttling, reducing pressure and cooling through the electronic expansion valve 2. Regardless of whether the modular air-conditioning unit is cooling or heating, the high-temperature refrigerant cannot enter the refrigerant pipeline 1 through the electronic expansion valve 2.

[0034] See also Figures 4 to 6As shown, the first one-way valve 31 and the third one-way valve 41 are connected between a heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint; the second one-way valve 32 and the fourth one-way valve 42 are connected between another heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint. In this embodiment, the refrigerant pipeline 1 includes two independent circulation loops: 1. When the modular air-conditioning unit is cooling, part of the refrigerant output by the expansion valve in the refrigerant circulation loop of the unit enters a heat exchanger (first heat exchanger) and then circulates in the unit, and part of it enters the refrigerant pipeline 1 through the first one-way valve 31 to absorb the heat emitted by the electronic control box, and then passes through the electronic expansion valve 2 to throttle, reduce pressure and cool to enter the connecting pipe 5, and then flows out through the fourth one-way valve 42 and returns to the expansion valve in the refrigerant circulation loop of the unit; 2. When the modular air-conditioning unit is heating, part of the refrigerant output by the expansion valve in the refrigerant circulation loop of the unit enters another heat exchanger (second heat exchanger) and then circulates in the unit, and part of it enters the refrigerant pipeline 1 through the second one-way valve 32 to absorb the heat emitted by the electronic control box, and then passes through the electronic expansion valve 2 to throttle, reduce pressure and cool to enter the connecting pipe 5, and then flows out through the third one-way valve 41 and returns to the expansion valve in the refrigerant circulation loop of the unit. By setting up two circulation loops to allow the refrigerant to circulate internally, no matter whether the unit is in cooling or heating mode, it can be ensured that the refrigerant in the refrigerant pipe 1 can absorb and take away the heat dissipated by the electronic control box, thereby achieving effective cooling of the electronic control box.

[0035] See also Figure 3 As shown, a first filter 6 is provided between the refrigerant pipe 1 and the electronic expansion valve 2, and a second filter 7 is provided between the electronic expansion valve 2 and the connecting pipe 5. The main function of the first filter 6 is to clean and filter the refrigerant, prevent moisture and impurities in the refrigerant from entering the electronic expansion valve 2, and protect the electronic expansion valve 2. The main function of the second filter 7 is to control the pressure drop to prevent excessive pressure drop from affecting the capacity of the refrigeration system.

[0036] See also Figure 3 As shown, it also includes a mounting member 8, which is connected to the outer wall of the heat dissipation end of the electric control box and is used to fix and install the refrigerant pipe 1. In this embodiment, the mounting member 8 includes a heat transfer plate that is close to the outer wall of the box body at the heat dissipation end of the electric control box, and a mounting plate that cooperates with the heat transfer plate to install the refrigerant pipe 1. The refrigerant pipe 1 is clamped between the heat transfer plate and the mounting plate, and the heat transfer plate and the mounting plate are fixed to the outer wall of the box body at the heat dissipation end of the electric control box via screws. The heat transfer plate is made of materials with high-efficiency heat transfer characteristics, including but not limited to stainless steel, Hastelloy and carbon steel, so as to improve the heat transfer efficiency of the refrigerant in the electric control box and the refrigerant pipe 1, and improve the cooling effect of the electric control box.

[0037] See also Figure 1 and Figure 3 As shown, it also includes a fixing member 9, which is connected to the outer side wall of the heat dissipation end of the electric control box and is used to install and fix the electronic expansion valve 2. In this embodiment, the fixing member 9 is a W-shaped integrated metal member, one end of the fixing member 9 is fixed to the outer side wall of the box body at the heat dissipation end of the electric control box via screws, and the other end is installed with the electronic expansion valve 2, so that a gap is formed between the electronic expansion valve 2 and the outer side wall of the electric control box to avoid affecting the heat dissipation of the electric control box.

[0038] In summary, the utility model provides a liquid cooling structure of an electric control box of a modular air conditioner, including a refrigerant pipe 1 fitted at the heat dissipation end of the electric control box, the input end of the refrigerant pipe 1 is connected to an inflow check valve 3, the output end of the refrigerant pipe 1 is connected to an electronic expansion valve 2, the electronic expansion valve 2 is connected to an outflow check valve 4 via a connecting pipe 5, the refrigerant pipe 1 is connected in parallel to the refrigerant circulation circuit of the modular air conditioner unit via the inflow check valve 3 and the outflow check valve 4, and the refrigerant circulation circuit of the modular air conditioner unit provides the refrigerant pipe 1 with a low-temperature refrigerant to perform liquid cooling and heat dissipation on the electric control box. The liquid cooling structure of the electric control box of the modular air conditioner is connected in parallel to the refrigerant circulation circuit of the modular air conditioner unit by setting the refrigerant pipe 1 in parallel, and utilizing the characteristics of the inflow check valve 3 and the outflow check valve 4 so that the low-temperature refrigerant can only enter the refrigerant pipe 1 to absorb the heat generated by the electric control box, and returns to the refrigerant circulation circuit of the unit through the electronic expansion valve 2 after becoming a medium-high temperature refrigerant, thereby achieving the advantage of improving the heat dissipation effect of the electric control box.

[0039] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. A liquid cooling structure of an electric control box of a modular air conditioner, characterized in that: The invention comprises a refrigerant pipe (1) which is fitted on the heat dissipation end of the electric control box, the input end of the refrigerant pipe (1) is connected to an inflow check valve (3), the output end of the refrigerant pipe (1) is connected to an electronic expansion valve (2), the electronic expansion valve (2) is connected to an outflow check valve (4) via a connecting pipe (5), the refrigerant pipe (1) is connected in parallel to the refrigerant circulation circuit of the modular air-conditioning unit via the inflow check valve (3) and the outflow check valve (4), and the refrigerant circulation circuit of the modular air-conditioning unit provides the refrigerant pipe (1) with low-temperature refrigerant to liquid-cool the electric control box.

2. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 1 is characterized in that: The inflow check valve (3) comprises a first check valve (31) and a second check valve (32), wherein the first check valve (31) and the second check valve (32) are connected to the input end of the refrigerant pipeline (1) via a three-way joint, and the first check valve (31) and the second check valve (32) are used to control the low-temperature refrigerant to enter the refrigerant pipeline (1).

3. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 2 is characterized in that: The outflow one-way valve (4) comprises a third one-way valve (41) and a fourth one-way valve (42), wherein the third one-way valve (41) and the fourth one-way valve (42) are connected to the output end of the connecting pipe (5) via a three-way joint, and the input end of the connecting pipe (5) is connected to the output end of the electronic expansion valve (2).

4. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 3 is characterized in that: The first one-way valve (31) and the third one-way valve (41) are connected between a heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint; the second one-way valve (32) and the fourth one-way valve (42) are connected between another heat exchanger and an expansion valve in the refrigerant circulation circuit of the modular air-conditioning unit via a three-way joint.

5. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 1 is characterized in that: A first filter (6) is provided between the refrigerant pipe (1) and the electronic expansion valve (2), and a second filter (7) is provided between the electronic expansion valve (2) and the connecting pipe (5).

6. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 1 is characterized in that: It also includes a mounting member (8), which is connected to the outer wall of the heat dissipation end of the electric control box and is used to fix the refrigerant pipeline (1).

7. The liquid cooling structure of the electric control box of the modular air conditioner according to claim 1 is characterized in that: It also includes a fixing member (9), which is connected to the outer wall of the heat dissipation end of the electric control box and is used to install and fix the electronic expansion valve (2).

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