Heat pipe cabinet air conditioner

Abstract

The utility model relates to the technical field of cabinet air conditioners, in particular to a heat pipe cabinet air conditioner which comprises a first upper heat pipe, a second upper heat pipe, a first lower heat pipe and a second lower heat pipe. A first upper inlet is formed in the top of the first upper heat pipe; a first upper outlet is formed in the bottom of the first upper heat pipe; a second upper inlet is formed in the top of the second upper heat pipe; a second upper outlet is formed in the bottom of the second upper heat pipe; a first lower outlet is formed in the top of the first lower heat pipe; a first lower inlet is formed in the bottom of the first lower heat pipe; a second lower outlet is formed in the top of the second lower heat pipe; a second lower inlet is formed in the bottom of the second lower heat pipe; a first electromagnetic valve is communicated between the first upper outlet and the second upper outlet; and a second electromagnetic valve is communicated between the first lower outlet and the second lower outlet. Through the arrangement of the first electromagnetic valve and the second electromagnetic valve, the two heat pipe systems are connected together, so that the height of the unit can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cabinet air conditioners, in particular to a heat pipe cabinet air conditioner. Background Art

[0002] Because the equipment inside the cabinet is always in a heating state, the cabinet air conditioning equipment will be in cooling operation for a long time, which consumes a lot of electricity. In order to reduce power consumption, heat pipe air conditioning technology that uses natural cold sources for cooling has gradually attracted attention. Among them, the composite air conditioning unit that combines the gravity-type split heat pipe air conditioning system without a compressor and the steam compression refrigeration air conditioning system with a compressor has a good energy-saving effect.

[0003] However, a certain height difference must be maintained between the bottom of the condenser and the top of the evaporator of the gravity-type split heat pipe air-conditioning unit to ensure the system circulation driving force, and the heat pipe condenser and evaporator units are usually placed vertically and occupy a higher space, resulting in a higher overall height of the heat pipe air-conditioning unit.

[0004] In addition, when the temperature difference between the inside and the outside is large and the heat load on the inside is large, more liquid refrigerant will accumulate in the liquid downcomer of the gravity-type separate heat pipe air-conditioning unit, forming a higher liquid column, which increases the evaporation pressure and evaporation temperature of the heat pipe evaporator, and will cause the cooling capacity of the heat pipe air-conditioning to decrease.

[0005] Secondly, when the temperature difference between the inside and the outside is large and the heat load on the inside is small, the cooling capacity is large, and the evaporating temperature and sensible heat ratio are likely to be low. Utility Model Content

[0006] The purpose of the utility model is to provide a heat pipe cabinet air conditioner to address the above-mentioned deficiencies in the prior art, which can effectively reduce the overall height and realize different working modes.

[0007] The purpose of the utility model is achieved through the following technical solutions: A heat pipe cabinet air conditioner, comprising a first upper heat pipe, a second upper heat pipe, a first lower heat pipe and a second lower heat pipe; the top of the first upper heat pipe is provided with a first upper inlet; the bottom of the first upper heat pipe is provided with a first upper outlet; the top of the second upper heat pipe is provided with a second upper inlet; the bottom of the second upper heat pipe is provided with a second upper outlet; the top of the first lower heat pipe is provided with a first lower outlet; the bottom of the first lower heat pipe is provided with a first lower inlet; the top of the second lower heat pipe is provided with a second lower outlet; the bottom of the second lower heat pipe is provided with a second lower inlet;

[0008] The first upper inlet is connected to the first lower outlet; the first upper outlet is connected to the first lower inlet; the second upper inlet is connected to the second lower outlet; the second upper outlet is connected to the second lower inlet;

[0009] The height of the first upper outlet is not lower than the height of the second upper outlet; the height of the first lower outlet is not lower than the height of the second lower outlet; the height of the second upper outlet is higher than the height of the first lower outlet;

[0010] A first solenoid valve is connected between the first upper outlet and the second upper outlet; a second solenoid valve is connected between the first lower outlet and the second lower outlet.

[0011] The utility model is further configured such that the first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe are all arranged inclined.

[0012] The utility model is further configured such that the first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe have the same inclination direction.

[0013] The utility model is further configured such that the height difference between the first upper outlet and the first lower outlet is the same as the height difference between the second upper outlet and the second lower outlet.

[0014] The utility model is further configured such that the height difference between the first upper outlet and the first lower outlet is not less than 50 cm.

[0015] The utility model is further configured such that the height difference between the second upper outlet and the first lower outlet is not less than 5 cm.

[0016] The utility model is further configured to include a first heat exchanger, a second heat exchanger, a compressor and a throttling element;

[0017] One end of the compressor is connected to one end of the first heat exchanger; the other end of the first heat exchanger is connected to one end of the second heat exchanger through a throttling element; the other end of the second heat exchanger is connected to the other end of the compressor.

[0018] The utility model is further configured to include a first fan and a second fan;

[0019] The second upper heat pipe is arranged downstream of the air duct where the first fan is located; the first upper heat pipe is arranged downstream of the air duct where the second upper heat pipe is located; the first heat exchanger is arranged downstream of the air duct where the second upper heat pipe is located and downstream of the air duct where the first upper heat pipe is located;

[0020] The first lower heat pipe is arranged downstream of the air duct where the second fan is located; the second lower heat pipe is arranged downstream of the air duct where the first lower heat pipe is located; the second heat exchanger is arranged downstream of the air duct where the first lower heat pipe is located and downstream of the air duct where the second lower heat pipe is located.

[0021] The utility model is further configured such that the first upper heat pipe and the second upper heat pipe are an integrated structure.

[0022] The utility model is further configured such that the first lower heat pipe and the second lower heat pipe are an integrated structure.

[0023] Beneficial effects of the utility model: the utility model sets the first upper heat pipe and the first lower heat pipe as one heat pipe system, sets the second upper heat pipe and the second lower heat pipe as another heat pipe system, and sets the first solenoid valve and the second solenoid valve so that the two heat pipe systems are connected in parallel, thereby effectively reducing the height of the unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The utility model is further described using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the utility model. A person skilled in the art can obtain other drawings based on the following drawings without creative work.

[0025] Figure 1 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe in Embodiment 1 of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the cooperation of the first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe in Embodiment 2 of the present utility model;

[0028] Among them: 1. first upper heat pipe; 11. first upper inlet; 12. first upper outlet; 2. second upper heat pipe; 21. second upper inlet; 22. second upper outlet; 3. first lower heat pipe; 31. first lower outlet; 32. first lower inlet; 4. second lower heat pipe; 41. second lower outlet; 42. second lower inlet; 51. first solenoid valve; 52. second solenoid valve; 61. first heat exchanger; 62. second heat exchanger; 63. compressor; 64. throttling element; 71. first fan; 72. second fan; 81. first liquid downcomer; 82. first gas upcomer; 91. second liquid downcomer; 92. second gas upcomer. DETAILED DESCRIPTION

[0029] The utility model is further described in conjunction with the following embodiments.

[0030] Embodiment 1, by Figure 1 to Figure 2It can be seen that the heat pipe cabinet air conditioner described in this embodiment includes a first upper heat pipe 1, a second upper heat pipe 2, a first lower heat pipe 3 and a second lower heat pipe 4; the top of the first upper heat pipe 1 is provided with a first upper inlet 11; the bottom of the first upper heat pipe 1 is provided with a first upper outlet 12; the top of the second upper heat pipe 2 is provided with a second upper inlet 21; the bottom of the second upper heat pipe 2 is provided with a second upper outlet 22; the top of the first lower heat pipe 3 is provided with a first lower outlet 31; the bottom of the first lower heat pipe 3 is provided with a first lower inlet 32; the top of the second lower heat pipe 4 is provided with a second lower outlet 41; the bottom of the second lower heat pipe 4 is provided with a second lower inlet 42;

[0031] The first upper inlet 11 is in communication with the first lower outlet 31; the first upper outlet 12 is in communication with the first lower inlet 32; the second upper inlet 21 is in communication with the second lower outlet 41; the second upper outlet 22 is in communication with the second lower inlet 42;

[0032] The height of the first upper outlet 12 is higher than the height of the second upper inlet 21; the height of the first lower inlet 32 ​​is higher than the height of the second lower outlet 41; the height of the second upper outlet 22 is higher than the height of the first lower outlet 31;

[0033] A first solenoid valve 51 is connected between the first upper outlet 12 and the second upper outlet 22 ; a second solenoid valve 52 is connected between the first lower outlet 31 and the second lower outlet 41 .

[0034] Specifically, the heat pipe cabinet air conditioner described in this embodiment is configured such that the first upper heat pipe 1 and the first lower heat pipe 3 are configured as a first heat pipe system, and the second upper heat pipe 2 and the second lower heat pipe 4 are configured as another second heat pipe system, and the two heat pipe systems are connected together by configuring the first solenoid valve 51 and the second solenoid valve 52. Compared with the conventional simultaneous configuration of two heat pipe systems, this embodiment can effectively reduce the overall height of the unit through the above-mentioned configuration in the height direction.

[0035] In addition, through the above arrangement, the heat pipe cabinet air conditioner can have different working modes; wherein the first upper outlet 12 and the first lower inlet 32 ​​in the first heat pipe system are connected through the first liquid downcomer 81, and the first lower outlet 31 and the first upper inlet 11 are connected through the first gas upcomer 82; the second upper outlet 22 and the second lower inlet 42 in the second heat pipe system are connected through the second liquid downcomer 91, and the second lower outlet 41 and the second upper inlet 21 are connected through the second gas upcomer 92;

[0036] During the system startup phase: the first solenoid valve 51 and the second solenoid valve 52 are both controlled to be open; thereby increasing the height of the liquid column in the second liquid downcomer 91 of the second heat pipe system, improving the circulation driving force, and accelerating the start of the circulation. (Since the density difference between the liquid column in the downcomer and the gas column in the upcomer is part of the self-driving force of the heat pipe system; therefore, the higher the height of the liquid column part, the larger the liquid volume, the greater the density difference between the downcomer and the upcomer, and thus the greater the pressure difference of the circulation).

[0037] During the shutdown phase of the system: the first solenoid valve 51 is controlled to be closed and the second solenoid valve 52 is opened; this facilitates the gaseous refrigerant in the second heat pipe system to rise and flow back into the first heat pipe system, thereby ensuring the amount of refrigerant in the first heat pipe system. (Since the second heat pipe system is located lower than the first heat pipe system, under the action of gravity, the refrigerant is likely to be deposited in the second heat pipe system at the bottom during shutdown. By opening the second solenoid valve 52, the gaseous refrigerant can rise and flow back into the first heat pipe system).

[0038] During the operation phase:

[0039] If the temperature difference between the inside and the outside is large (inner ring temperature - outer ring temperature ≥ 20°C) and the heat load is large (the speed of the second fan 72 ≥ 80% * rated speed): control the first solenoid valve 51 and the second solenoid valve 52 to be closed; the two sets of heat pipe air-conditioning systems are separated from each other, and each heat pipe heat exchanger is fully utilized for evaporation and condensation, which can effectively reduce the height of the refrigerant liquid column in the liquid downcomer, reduce the evaporation pressure and evaporation temperature in the second heat pipe system, and increase the cooling capacity.

[0040] If the temperature difference between the inside and the outside is large (inner ring temperature - outer ring temperature ≥ 20°C) and the heat load is small (the speed of the second fan 72 is less than 30% * rated speed): control the first solenoid valve 51 to open and the second solenoid valve 52 to close; reduce the refrigerant circulation volume in the first heat pipe system, so that the refrigerant is more concentrated in the second heat pipe system, increase the evaporation pressure and evaporation temperature in the second heat pipe system, and reduce the cooling capacity (the higher the height of the liquid column, the greater the gravity pressure added to the refrigerant in the lower evaporator, and the corresponding evaporation temperature will rise after the pressure increases) to ensure that the cooling capacity and heat load match to avoid the situation where the evaporation temperature and sensible heat ratio are too low.

[0041] In the heat pipe cabinet air conditioner described in this embodiment, the first upper heat pipe 1, the second upper heat pipe 2, the first lower heat pipe 3 and the second lower heat pipe 4 are all arranged obliquely. The above arrangement can further reduce the overall height of the system.

[0042] In the heat pipe cabinet air conditioner described in this embodiment, the first upper heat pipe 1, the second upper heat pipe 2, the first lower heat pipe 3 and the second lower heat pipe 4 have the same inclination direction. The above arrangement can make the entire system stable and reliable.

[0043] In the heat pipe cabinet air conditioner described in this embodiment, the height difference between the first upper outlet 12 and the first lower outlet 31 is the same as the height difference between the second upper outlet 22 and the second lower outlet 41. In the heat pipe cabinet air conditioner described in this embodiment, the height difference between the first upper outlet 12 and the first lower outlet 31 is not less than 50 cm. In the heat pipe cabinet air conditioner described in this embodiment, the height difference between the second upper outlet 22 and the first lower outlet 31 is not less than 5 cm. The above settings can ensure that the entire system can work stably.

[0044] The heat pipe cabinet air conditioner described in this embodiment also includes a first heat exchanger 61, a second heat exchanger 62, a compressor 63 and a throttling element 64; one end of the compressor 63 is connected to one end of the first heat exchanger 61; the other end of the first heat exchanger 61 is connected to one end of the second heat exchanger 62 through the throttling element 64; the other end of the second heat exchanger 62 is connected to the other end of the compressor 63. Specifically, through the above arrangement, the heat pipe cabinet air conditioner can perform mechanical refrigeration at the same time, further improving the efficiency of the heat pipe cabinet air conditioner.

[0045] The heat pipe cabinet air conditioner described in this embodiment further includes a first fan 71 and a second fan 72;

[0046] The second upper heat pipe 2 is arranged downstream of the air duct where the first fan 71 is located; the first upper heat pipe 1 is arranged downstream of the air duct where the second upper heat pipe 2 is located; the first heat exchanger 61 is arranged downstream of the air duct where the second upper heat pipe 2 is located and downstream of the air duct where the first upper heat pipe 1 is located;

[0047] The first lower heat pipe 3 is arranged downstream of the air duct where the second fan 72 is located; the second lower heat pipe 4 is arranged downstream of the air duct where the first lower heat pipe 3 is located; the second heat exchanger 62 is arranged downstream of the air duct where the first lower heat pipe 3 is located and downstream of the air duct where the second lower heat pipe 4 is located. Specifically, the above arrangement can further improve the working efficiency of the heat pipe cabinet air conditioner and further save the overall height space of the heat pipe cabinet air conditioner.

[0048] Embodiment 2, by Figure 3 It can be seen that in the heat pipe cabinet air conditioner described in this embodiment, the first upper heat pipe 1 and the second upper heat pipe 2 are an integrated structure. In the heat pipe cabinet air conditioner described in this embodiment, the first lower heat pipe 3 and the second lower heat pipe 4 are an integrated structure. The above arrangement can further save space for the heat pipe cabinet air conditioner and facilitate production.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A heat pipe cabinet air conditioner, characterized in that: It includes a first upper heat pipe, a second upper heat pipe, a first lower heat pipe and a second lower heat pipe; The top of the first upper heat pipe is provided with a first upper inlet; the bottom of the first upper heat pipe is provided with a first upper outlet; the top of the second upper heat pipe is provided with a second upper inlet; the bottom of the second upper heat pipe is provided with a second upper outlet; the top of the first lower heat pipe is provided with a first lower outlet; the bottom of the first lower heat pipe is provided with a first lower inlet; the top of the second lower heat pipe is provided with a second lower outlet; the bottom of the second lower heat pipe is provided with a second lower inlet; The first upper inlet is connected to the first lower outlet; the first upper outlet is connected to the first lower inlet; the second upper inlet is connected to the second lower outlet; the second upper outlet is connected to the second lower inlet; The height of the first upper outlet is not lower than the height of the second upper outlet; the height of the first lower outlet is not lower than the height of the second lower outlet; the height of the second upper outlet is higher than the height of the first lower outlet; A first solenoid valve is connected between the first upper outlet and the second upper outlet; a second solenoid valve is connected between the first lower outlet and the second lower outlet.

2. A heat pipe cabinet air conditioner according to claim 1, characterized in that: The first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe are all arranged inclined.

3. A heat pipe cabinet air conditioner according to claim 2, characterized in that: The first upper heat pipe, the second upper heat pipe, the first lower heat pipe and the second lower heat pipe have the same inclination direction.

4. The heat pipe cabinet air conditioner according to claim 1, characterized in that: A height difference between the first upper outlet and the first lower outlet is the same as a height difference between the second upper outlet and the second lower outlet.

5. A heat pipe cabinet air conditioner according to claim 4, characterized in that: The height difference between the first upper outlet and the first lower outlet is not less than 50 cm.

6. The heat pipe cabinet air conditioner according to claim 1, characterized in that: The height difference between the second upper outlet and the first lower outlet is not less than 5 cm.

7. The heat pipe cabinet air conditioner according to claim 1, characterized in that: Also includes a first heat exchanger, a second heat exchanger, a compressor and a throttling element; One end of the compressor is connected to one end of the first heat exchanger; the other end of the first heat exchanger is connected to one end of the second heat exchanger through a throttling element; the other end of the second heat exchanger is connected to the other end of the compressor.

8. The heat pipe cabinet air conditioner according to claim 7, characterized in that: Also includes a first fan and a second fan; The second upper heat pipe is arranged downstream of the air duct where the first fan is located; the first upper heat pipe is arranged downstream of the air duct where the second upper heat pipe is located; the first heat exchanger is arranged downstream of the air duct where the second upper heat pipe is located and downstream of the air duct where the first upper heat pipe is located; The first lower heat pipe is arranged downstream of the air duct where the second fan is located; the second lower heat pipe is arranged downstream of the air duct where the first lower heat pipe is located; the second heat exchanger is arranged downstream of the air duct where the first lower heat pipe is located and downstream of the air duct where the second lower heat pipe is located.

9. The heat pipe cabinet air conditioner according to claim 1, characterized in that: The first upper heat pipe and the second upper heat pipe are an integrated structure.

10. The heat pipe cabinet air conditioner according to claim 1, characterized in that: The first lower heat pipe and the second lower heat pipe are an integrated structure.

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