Refrigerant heat dissipation device, refrigerant circulation system and air conditioner

Abstract

The utility model provides a refrigerant heat dissipation device, a refrigerant circulation system and an air conditioner, and the refrigerant heat dissipation device comprises a refrigerant heat dissipation device arranged on an electric control box of the air conditioner; the refrigerant radiator comprises a radiating pipe; one end of the refrigerating element is connected with an outlet of a condenser of the air conditioner, and the other end of the refrigerating element is connected with an inlet of the radiating pipe.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioning, and in particular to a refrigerant heat dissipation device, a refrigerant circulation system and an air conditioner. Background Art

[0002] The air conditioner is provided with an electric control box for controlling the operation of various components in the air conditioner; the electric control box is provided with electronic components, which generate heat during operation, causing a high temperature in the electric control box, and thus the electric control box needs to be cooled; in the prior art, the electric control box is cooled by an air cooling device, but the limited space in the air conditioner makes it difficult for the air cooling device to enter and exit the air, resulting in low heat dissipation efficiency of the electric control box. Utility Model Content

[0003] The present application provides a refrigerant heat dissipation device, a refrigerant circulation system and an air conditioner, aiming to solve the technical problem of low heat dissipation efficiency of an electric control box in the prior art.

[0004] In a first aspect, the present application provides a refrigerant heat dissipation device, comprising:

[0005] A refrigerant radiator is arranged on the electric control box of the air conditioner; the refrigerant radiator comprises a heat dissipation pipe;

[0006] A refrigeration element, one end of which is connected to the outlet of the condenser of the air conditioner, and the other end of which is connected to the inlet of the heat dissipation pipe.

[0007] Optionally, the refrigeration element includes a flash evaporator and / or a first throttling element; the heat dissipation pipe includes a first heat dissipation pipe and / or a second heat dissipation pipe;

[0008] The inlet of the first heat dissipation pipe is connected to the first throttling element; and / or the inlet of the second heat dissipation pipe is connected to the flash evaporator.

[0009] Optionally, the outlet of the first heat dissipation pipe is communicated with the compressor of the air conditioner, and the outlet of the second heat dissipation pipe is communicated with the evaporator of the air conditioner.

[0010] Optionally, the refrigerant heat dissipation device further includes a heat regenerator; the heat regenerator includes a heat recovery pipe and a heat delivery pipe;

[0011] The first heat dissipation pipe is connected to the compressor through the heat delivery pipe;

[0012] The outlet of the evaporator is connected to the compressor through the heat recovery pipe.

[0013] Optionally, the refrigerant heat dissipation device further comprises a four-way valve, a first end of the four-way valve being connected to an outlet of the evaporator;

[0014] The second end of the four-way valve is communicated with the inlet end of the heat recovery pipe;

[0015] The third end of the four-way valve is connected to the outlet end of the heat recovery pipe;

[0016] The fourth end of the four-way valve is in communication with the compressor;

[0017] Among them, the working state of the four-way valve includes a first state and a second state; in the four-way valve in the first state, the first end is connected to the second end, the third end is connected to the fourth end, and the first end is cut off from the fourth end; in the four-way valve in the second state, the first end is connected to the fourth end, the first end is cut off from the second end, and the third end is cut off from the fourth end.

[0018] Optionally, the refrigerant heat dissipation device also includes a temperature sensor and a controller, the temperature sensor is arranged on the refrigerant flow path between the evaporator and the first end; the controller is electrically connected to the temperature sensor and the four-way valve respectively, and is configured to switch the working state of the four-way valve according to the temperature signal collected by the temperature sensor.

[0019] Optionally, the flash evaporator comprises a cavity and a heat exchange tube arranged in the cavity;

[0020] The inlet of the second heat dissipation pipe is connected to the heat exchange pipe, and the heat exchange pipe is connected to the condenser;

[0021] The inlet of the first heat dissipation pipe is connected to the cavity, and the outlet of the first throttling element is communicated with the cavity.

[0022] Optionally, the first throttling element is an expansion valve.

[0023] In a second aspect, the present application provides a refrigerant circulation system, comprising the refrigerant heat dissipation device as described above.

[0024] In a third aspect, the present application also provides an air conditioner, comprising the refrigerant heat dissipation device as described above or the refrigerant circulation system as described above.

[0025] In the technical solution of the embodiment of the present application, a refrigerant radiator is arranged on the electric control box of the air conditioner; the inlet of the heat dissipation pipe of the refrigerant radiator is connected to the refrigeration element, and the refrigeration element is connected to the outlet of the condenser of the air conditioner. The refrigeration element first cools the refrigerant coming out of the condenser, and the refrigerated refrigerant absorbs the heat of the electric control box when flowing through the refrigerant radiator, thereby completing the cooling and heat dissipation of the electric control box. There is no need to set up an air cooling device, which solves the technical problem of low heat dissipation efficiency of the electric control box due to difficulty in air intake and exhaust of the air cooling device due to limited space in the air conditioner; and, compared with air cooling and heat dissipation, since the heat exchange medium is refrigerant instead of air, the space structure for air intake and exhaust used for air cooling and heat dissipation can be saved, which is conducive to the compact structure of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a structure of a refrigerant heat dissipation device in an application state provided in an embodiment of the present application;

[0028] Figure 2 Another structural schematic diagram of the refrigerant heat dissipation device provided in an embodiment of the present application in an application state;

[0029] Figure 3 A schematic diagram of the operation of the refrigerant heat dissipation device in the first state provided in an embodiment of the present application;

[0030] Figure 4 A schematic diagram of the operation of the refrigerant heat dissipation device in the second state provided in an embodiment of the present application;

[0031] Figure 5 A schematic diagram of a control structure of a refrigerant heat dissipation device provided in an embodiment of the present application.

[0032] Reference numerals list

[0033] 110 Refrigerant radiator 131 Heat recovery pipe 111 Heat pipe 132 Heat pipe 1111 First heat pipe 140 Four-way valve 1112 Second heat pipe 150 Controller 120 Refrigeration elements T Temperature Sensor 121 The first throttle element 210 compressor 122 Flash evaporator 220 Condenser 122a Cavity 230 Evaporator 122b Heat exchange tube 240 Second throttle element 130 Regenerator 250 Gas-Liquid Separator DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] like Figure 1 As shown, the embodiment of the present application provides a refrigerant heat dissipation device, comprising:

[0039] The refrigerant radiator 110 is arranged on the electric control box of the air conditioner; the refrigerant radiator 110 includes a heat dissipation pipe 111;

[0040] A refrigeration element 120 , one end of which is connected to the outlet of the condenser 220 of the air conditioner, and the other end of which is connected to the inlet of the heat dissipation pipe 111 .

[0041] In the technical solution of the embodiment of the present application, a refrigerant radiator 110 is arranged on the electric control box of the air conditioner; the inlet of the heat dissipation pipe 111 of the refrigerant radiator 110 is connected to the refrigeration element 120, and the refrigeration element 120 is connected to the outlet of the condenser 220 of the air conditioner. The refrigeration element 120 first cools the refrigerant coming out of the condenser 220, and the refrigerated refrigerant absorbs the heat of the electric control box when flowing through the refrigerant radiator 110, thereby completing the cooling and heat dissipation of the electric control box. There is no need to set up an air cooling device, thereby solving the technical problem that the air cooling device has difficulty in entering and exiting the air due to limited space in the air conditioner, resulting in low heat dissipation efficiency of the electric control box; and, compared with air cooling and heat dissipation, since the heat exchange medium is refrigerant instead of air, the space structure for air inlet and outlet used for air cooling and heat dissipation can be saved, which is conducive to the compact structure of the air conditioner.

[0042] like Figure 2 As shown, as an optional implementation of the above embodiment, the refrigeration element 120 includes a flash evaporator 122 and / or a first throttling element 121; the heat dissipation pipe 111 includes a first heat dissipation pipe 1111 and / or a second heat dissipation pipe 1112; the inlet of the first heat dissipation pipe 1111 is connected to the first throttling element 121; and / or the inlet of the second heat dissipation pipe 1112 is connected to the flash evaporator 122. In the embodiment, the refrigerant coming out of the condenser 220 is cooled by the flash evaporator 122 and / or the first throttling element 121, and then enters the first heat dissipation pipe 1111 and / or the second heat dissipation pipe 1112 to absorb the heat generated by the electric control box, thereby achieving the purpose of heat dissipation.

[0043] In the embodiment, the refrigeration element 120 may include only the flash evaporator 122, or only the first throttling element 121, or may include both the flash evaporator 122 and the first throttling element 121. In some embodiments of the present application, in order to resist the harsh working conditions and ensure the regulating effect of the air conditioner under the harsh working conditions, the refrigeration element 120 includes the flash evaporator 122 and the first throttling element 121, that is, the refrigerant coming out of the condenser 220 is divided into two paths, which are cooled by the flash evaporator 122 and the first throttling element 121 respectively, and then flow into the refrigerant radiator 110. The refrigerant in the refrigerant radiator 110 with two paths of different states cools the electric control box through the effect of thermal coupling.

[0044] As an optional implementation of the above embodiment, the refrigeration element 120 includes a flash evaporator 122 and a first throttling element 121. The outlet of the first heat dissipation pipe 1111 is connected to the compressor 210 of the air conditioner, and the outlet of the second heat dissipation pipe 1112 is connected to the evaporator 230 of the air conditioner. That is, the refrigerant after throttling and cooling by the first throttling element 121 absorbs the heat of the electric control box in the first heat dissipation pipe 1111 and then heats up and vaporizes, and then flows back to the compressor 210 to replenish enthalpy; the refrigerant after cooling by the flash evaporator 122 absorbs the heat of the electric control box in the second heat dissipation pipe 1112 and then rises to a certain extent in temperature, and then flows into the evaporator 230 for further vaporization, so as to achieve the cooling of the indoor air.

[0045] It should be noted that the air conditioner is also provided with a second throttling element 240, which is arranged before the inlet of the evaporator 230. That is, the refrigerant cooled by the flash evaporator 122 absorbs the heat of the electronic control box in the second heat dissipation tube 1112 and then enters the second throttling element 240. The refrigerant after absorbing heat is throttled and cooled by the second throttling element 240 to adjust the temperature of the indoor air.

[0046] As an optional implementation of the above embodiment, Figure 2As shown, the refrigerant heat dissipation device also includes a regenerator 130; the regenerator 130 includes a reheat pipe 131 and a heat delivery pipe 132, and the reheat pipe 131 and the heat delivery pipe 132 are configured to enable the refrigerants therein to exchange heat with each other. The first heat dissipation pipe 1111 is connected to the compressor 210 through the heat delivery pipe 132. The outlet of the evaporator 230 is connected to the compressor 210 through the reheat pipe 131. In an embodiment, since the refrigerant coming out of the evaporator 230 may contain liquid, in order to avoid liquid hammer in the compressor 210, the refrigerant heat dissipation device also includes a regenerator 130. In the heat regenerator 130, the refrigerant that has absorbed the heat from the electronic control box flows into the heat delivery pipe 132 through the first heat dissipation pipe 1111, and the refrigerant flowing out of the evaporator 230 enters the heat regeneration pipe 131; the heat regeneration pipe 131 and the heat delivery pipe 132 are arranged alternately with each other, and the two refrigerants exchange heat, so that the refrigerant in the heat regeneration pipe 131 absorbs heat and vaporizes, and then flows into the compressor 210.

[0047] In an embodiment, the heat recovery pipe 131 and the heat delivery pipe 132 are configured to enable the refrigerants therein to exchange heat with each other, and may be arranged in a serpentine staggered manner or in parallel at intervals to exchange heat by thermal radiation; or the heat recovery pipe 131 and the heat delivery pipe 132 may be in contact with each other to exchange heat by heat conduction.

[0048] like Figure 2 , 3 and Figure 4 As shown, as an optional implementation of the above embodiment, the refrigerant heat dissipation device further includes a four-way valve 140, the first end of the four-way valve 140 is connected to the outlet of the evaporator 230; the second end of the four-way valve 140 is connected to the inlet end of the heat recovery pipe 131; the third end of the four-way valve 140 is connected to the outlet end of the heat recovery pipe 131; the fourth end of the four-way valve 140 is connected to the compressor 210. The working state of the four-way valve 140 includes a first state and a second state; in the first state of the four-way valve 140, the first end is connected to the second end, the third end is connected to the fourth end, and the first end is cut off from the fourth end; in the second state of the four-way valve 140, the first end is connected to the fourth end, the first end is cut off from the second end, and the third end is cut off from the fourth end.

[0049] In this embodiment, the flow direction of the refrigerant flowing out of the evaporator 230 can be switched by switching the four-way valve 140. For example, when the working load of the air conditioner is high, the refrigerant in the evaporator 230 is fully gasified, and the four-way valve 140 is in the second state at this time, the flow path of the reheat pipe 131 in the reheater 130 is short-circuited, and the refrigerant directly returns to the compressor 210 through the four-way valve 140; at this time, the opening of the first throttle can be increased to increase the air supply of the compressor 210, the heat dissipation of the refrigerant radiator 110, and the supercooling of the liquid refrigerant. For another example, when the working load of the air conditioner is normal, the refrigerant in the evaporator 230 is not fully gasified, and the four-way valve 140 is in the first state at this time, the flow path of the reheat pipe 131 in the reheater 130 is conducted, and the refrigerant from the evaporator 230 flows into the reheat pipe 131, absorbs heat and gasifies, and then returns to the compressor 210 through the four-way valve 140.

[0050] Combination Figure 4 and Figure 5 As shown, as an optional implementation of the above embodiment, the refrigerant heat dissipation device further includes a temperature sensor T and a controller 150. The temperature sensor T is arranged on the refrigerant flow path between the evaporator 230 and the first end; the controller 150 is electrically connected to the temperature sensor T and the four-way valve 140 respectively, and is configured to switch the working state of the four-way valve 140 according to the temperature signal collected by the temperature sensor T. In the embodiment, the temperature collected by the temperature sensor T is used to reflect the liquid content of the refrigerant coming out of the evaporator 230. When the temperature is low, it means that the refrigerant coming out of the evaporator 230 has a high liquid content. When the temperature is high, it means that the refrigerant coming out of the evaporator 230 has a small liquid content or does not contain liquid. The controller 150 switches the working state of the four-way valve 140 according to the temperature signal of the temperature sensor T, so as to protect the compressor 210 from liquid shock and improve the operating reliability of the air conditioner.

[0051] Specifically, the controller 150 may be disposed in the electric control box. The controller 150 determines the working state of the four-way valve 140 by comparing the temperature with the preset temperature. For example, when the temperature collected by the temperature sensor T exceeds the preset temperature, the four-way valve 140 is in the second state; when the temperature collected by the temperature sensor T is lower than or equal to the preset temperature, the four-way valve 140 is in the first state.

[0052] like Figure 2As shown, as an optional implementation of the above embodiment, the flash evaporator 122 includes a cavity 122a and a heat exchange tube 122b arranged in the cavity 122a; the inlet of the second heat dissipation tube 1112 is connected to the heat exchange tube 122b, and the heat exchange tube 122b is connected to the condenser 220; the inlet of the first heat dissipation tube 1111 is connected to the cavity 122a, and the outlet of the first throttling element 121 is connected to the cavity 122a. In the embodiment, the refrigerant throttled by the first throttling element 121 enters the cavity 122a for flash cooling; then the other refrigerant coming out of the condenser 220 enters the heat exchange tube 122b in the cavity 122a, and is overcooled after heat exchange with the refrigerant coming out of the first throttling element 121; both refrigerants flow into the refrigerant heat exchanger, perform thermal coupling, and cool the electric control box.

[0053] As an optional implementation of the above embodiment, the first throttling element 121 is an expansion valve. In the embodiment, the opening of the expansion valve can be adjusted according to the temperature of the electric control box, and can also be adjusted according to the working load of the air conditioner. For example, when the working load of the air conditioner is high, the refrigerant in the evaporator 230 is fully gasified, and the four-way valve 140 is in the second state at this time, the flow path of the reheat pipe 131 in the reheater 130 is short-circuited, and the refrigerant directly returns to the compressor 210 through the four-way valve 140; at this time, the opening of the first throttling element can be increased to increase the air supply of the compressor 210, the heat dissipation of the refrigerant radiator 110, and the supercooling of the liquid refrigerant.

[0054] In a second aspect, the present application provides a refrigerant circulation system, including a refrigerant heat dissipation device. The specific structure of the refrigerant heat dissipation device refers to the above embodiment. Since the refrigerant heat dissipation device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0055] In an embodiment, the refrigerant circulation system includes a compressor 210, a condenser 220, a refrigerant heat sink, an evaporator 230, a second throttling element 240 and a gas-liquid separator 250. The compressor 210 is connected to the refrigerant, the condenser 220 is connected to the refrigerant heat sink, the refrigerant heat sink is connected to the second throttling element 240, the second throttling element 240 is connected to the gas-liquid separator 250, and the gas-liquid separator 250 is connected to the compressor 210; in some embodiments, the outlet of the refrigerant heat sink can be divided into two refrigerant paths, one path is connected to the compressor 210, and the other path is connected to the evaporator 230. The second throttling element 240 is an expansion valve.

[0056] In an embodiment, the refrigerant circulation system further includes a gas-liquid separator 250, the outlet of the evaporator 230 is connected to the gas-liquid separator 250, and the outlet of the gas-liquid separator 250 is connected to the first end of the four-way valve 140. The temperature sensor T is disposed on the flow path between the outlet of the gas-liquid separator 250 and the first end of the four-way valve 140.

[0057] In a third aspect, the present application further provides an air conditioner, including a refrigerant heat dissipation device or a refrigerant circulation system. The specific structure of the refrigerant heat dissipation device or the refrigerant circulation system refers to the above embodiments. Since the refrigerant heat dissipation device or the refrigerant circulation system adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0058] In the embodiment, the air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes an evaporator 230 and an electric control box; the outdoor unit includes a condenser 220, a compressor 210, a gas-liquid separator 250, a four-way valve 140, etc. The refrigerant radiator 110 of the refrigerant heat dissipation device is arranged on the electric control box, and the refrigeration element 120 of the refrigerant radiator 110 is usually arranged in the outdoor unit, and can also be arranged in the indoor unit.

[0059] The above description is only an optional embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A refrigerant heat dissipation device, characterized in that: include: A refrigerant radiator is arranged on the electric control box of the air conditioner; the refrigerant radiator comprises a heat dissipation pipe; A refrigeration element, one end of which is connected to the outlet of the condenser of the air conditioner, and the other end of which is connected to the inlet of the heat dissipation pipe.

2. The refrigerant heat dissipation device according to claim 1, characterized in that: The refrigeration element includes a flash evaporator and / or a first throttling element; the heat dissipation pipe includes a first heat dissipation pipe and / or a second heat dissipation pipe; The inlet of the first heat dissipation pipe is connected to the first throttling element; and / or the inlet of the second heat dissipation pipe is connected to the flash evaporator.

3. The refrigerant heat dissipation device according to claim 2, characterized in that: The outlet of the first heat dissipation pipe is communicated with the compressor of the air conditioner, and the outlet of the second heat dissipation pipe is communicated with the evaporator of the air conditioner.

4. The refrigerant heat dissipation device according to claim 3, characterized in that: The refrigerant heat dissipation device further includes a regenerator; the regenerator includes a regenerator pipe and a heat delivery pipe arranged alternately with each other, and the regenerator pipe and the heat delivery pipe are configured to enable the refrigerants therein to exchange heat with each other; The first heat dissipation pipe is connected to the compressor through the heat delivery pipe; The outlet of the evaporator is connected to the compressor through the heat recovery pipe.

5. The refrigerant heat dissipation device according to claim 4, characterized in that: The refrigerant heat dissipation device further comprises a four-way valve, a first end of the four-way valve being in communication with an outlet of the evaporator; The second end of the four-way valve is communicated with the inlet end of the heat recovery pipe; The third end of the four-way valve is connected to the outlet end of the heat recovery pipe; The fourth end of the four-way valve is in communication with the compressor; Among them, the working state of the four-way valve includes a first state and a second state; in the four-way valve in the first state, the first end is connected to the second end, the third end is connected to the fourth end, and the first end is cut off from the fourth end; in the four-way valve in the second state, the first end is connected to the fourth end, the first end is cut off from the second end, and the third end is cut off from the fourth end.

6. The refrigerant heat dissipation device according to claim 5, characterized in that: The refrigerant heat dissipation device also includes a temperature sensor and a controller. The temperature sensor is arranged on the refrigerant flow path between the evaporator and the first end; the controller is electrically connected to the temperature sensor and the four-way valve respectively, and is configured to switch the working state of the four-way valve according to the temperature signal collected by the temperature sensor.

7. The refrigerant heat dissipation device according to any one of claims 2 to 6, characterized in that: The flash evaporator comprises a cavity and a heat exchange tube arranged in the cavity; The inlet of the second heat dissipation pipe is connected to the heat exchange pipe, and the heat exchange pipe is connected to the condenser; The inlet of the first heat dissipation pipe is connected to the cavity, and the outlet of the first throttling element is communicated with the cavity.

8. The refrigerant heat dissipation device according to any one of claims 2 to 6, characterized in that: The first throttling element is an expansion valve.

9. A refrigerant circulation system, characterized in that: A refrigerant heat dissipation device comprising any one of claims 1 to 8.

10. An air conditioner, characterized in that: It comprises the refrigerant heat dissipation device according to any one of claims 1 to 8 or the refrigerant circulation system according to claim 9.

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