WO2018000601A1

WO2018000601A1 - Multi-branch heat pipe/heat pump composite system

Info

Publication number: WO2018000601A1
Application number: PCT/CN2016/099663
Authority: WO
Inventors: 祝长宇
Original assignee: 北京丰联奥睿科技有限公司
Priority date: 2016-06-29
Filing date: 2016-09-22
Publication date: 2018-01-04
Also published as: CN106016539A

Abstract

A multi-branch heat pipe/heat pump composite system, constituted primarily by three evaporation cycle branches, three condensation cycle branches, and a circuit control system. The evaporation cycle branches correspondingly comprise evaporators (21, 22, and 23), a liquid storage tank (3), and evaporator circulation pumps (81, 82, and 83). The condensation cycle branches correspondingly comprise one heat pipe condensation cycle branch and one heat pump condensation cycle branch. The heat pipe condensation cycle branches correspondingly comprise condensers (11, 12, and 13), condenser circulation pumps (71, 72, and 73), solenoid valves (61, 62, and 63), the liquid storage tank (3), and one-way valves (91, 92, and 93). The heat pump condensation cycle branches correspondingly comprise the condensers (11, 12, and 13), one-way valves (101, 102, and 103), throttle valves (51, 52, and 53), the liquid storage tank (3), and compressors (41, 42, and 43). Allowed is switching to a heat pipe work mode or a heat pump work mode on the basis of the environment or as required; this multi-branch heat pipe/heat pump composite system not only increases output power, but also merges heat pump and heat pipe heat transfer techniques, and solves the existing problem of low utilization rate of evaporators and condensers, thus increasing heat transfer efficiency.

Description

Multi-branch heat pipe heat pump composite system

Technical field

[0001] The present invention belongs to the technical field of thermal energy transportation, and relates to a multi-branch heat pipe heat pump composite system for heat energy transportation formed by combining a multi-leg heat pipe system and a multi-branch heat pump system.

Background technique

[0002] At present, due to the high density of equipment in the communication equipment room and data center, the heat generation is large, and the equipment room system has certain requirements on the environment temperature, humidity and dust concentration. Therefore, an air conditioning system should be provided. In order to ensure the corresponding temperature and humidity conditions, the special air conditioner for the steam compression machine room has been widely used. However, a vapor-compressed air conditioner of one evaporator and one condenser is generally not powerful enough to meet the cooling requirements of a large-scale computer room. Therefore, multiple evaporators and condensers need to be connected in parallel to increase power, and this 吋 evaporator circulation pump and condenser Circulating pumps are prone to uneven flow distribution and produce defects with different cooling capacities.

[0003] For a computer room with a large amount of heat, even in a cold winter area, a steam compression-type dedicated air-conditioning cooling operation is required to carry out the heat-dissipation load. However, for the northern part of China, most of the winter and spring and autumn transition seasons have temperatures below 20 degrees. Even in this case, existing air conditioning systems still need to start high-energy compressors to control the ambient temperature. This kind of cooling system that still uses the air-conditioning system of the vapor compression machine room is not energy-saving, resulting in unnecessary waste of electric energy and high operating costs. technical problem

[0004] The object of the present invention is to overcome the shortcomings of the prior art, and to solve the problem of small power of the heat pipe heat pump system and large energy consumption of the heat pump system, and provide a multi-branch heat pipe system and a multi-branch heat pump system are combined. The multi-branch heat pipe heat pump composite system for heat energy transportation is formed, and the multi-branch heat pipe heat pump composite system can be used for high-power large-scale computer room cooling, and can automatically activate the heat pipe mode to adjust the indoor temperature when the outdoor temperature is lower than the indoor temperature. The outdoor temperature is higher than the indoor temperature, and the heat pump refrigeration cycle system is automatically operated, which can extend the service life of the compression refrigeration unit while saving energy.

Problem solution

Technical solution

[0005] The present invention solves the technical problem by adopting the following technical solutions: Multi-branch heat pipe heat pump composite system, including evaporation cycle branch 1, evaporation cycle branch 2, evaporation cycle branch 3, condensation cycle branch 1, condensation cycle branch 2, condensation cycle branch 3 and circuit control system , 1-2 or 4-M independent evaporation cycle branches and 1-2 or 4-N independent condensation cycle branches can be made as needed, and M and N have no quantitative relationship; wherein, evaporation cycle branch Road one includes evaporator one, liquid storage tank, evaporator circulation pump one, evaporation circulation branch two includes evaporator two, liquid storage tank, evaporator circulation pump two, evaporation circulation branch three includes evaporator three, liquid storage tank The evaporator circulation pump three; each of the condensation circulation branches includes a heat pipe condensation circulation branch and a heat pump condensation circulation branch; the heat pipe condensation circulation branch includes a condenser one, a condenser circulation pump, and a solenoid valve 1. The liquid storage tank and the one-way valve one, the heat pipe condensation circulation branch circuit 2 includes the condenser two, the condenser circulation pump two, the electromagnetic valve two, the liquid storage tank, the one-way valve three, the heat pipe condensation circulation branch three includes condensation 3. Condenser circulation pump 3. Solenoid valve 3. Liquid storage tank and check valve 5. The heat pump condensation circulation branch includes a condenser, a check valve 2, a throttle valve, a liquid storage tank, and a compressor. The heat pump condensing circulation branch circuit 2 includes a condenser 2, a check valve 4, a throttle valve 2, a liquid storage tank, a compressor 2, a heat pump condensing circulation branch 3 including a condenser 3, a check valve 6 and a throttle valve 3. a liquid storage tank and a compressor three; the evaporator circulating pumps one, two and three are respectively connected between the first, second and third input ends of the evaporator and the liquid storage tank, and the input end of the branch is located in the liquid storage tank The lower part of the liquid refrigerant liquid level is independent of each other; the first, second and third output ends of the evaporator are connected to the liquid storage tank, and the output end of the branch line is located at the upper part of the liquid refrigerant liquid level in the liquid storage tank, and is independent of each other The one-way valves one, three, and five are respectively connected in parallel with the compressors one, two, and three between the first, second, and third input ends of the condenser and the liquid storage tank, and the input end of the branch is located in the liquid storage tank The upper part of the liquid refrigerant liquid level, and the phase Independently; the condenser circulating pump one, two, three and the solenoid valve one, two, three series branch and the one-way valve two, four, six and the throttle valve one, two, three series branch parallel, the output end Connected to the lower part of the liquid refrigerant liquid level in the liquid storage tank, and independent of each other, their input ends are respectively connected to the output ends of the condensers 1, 2, and 3; all the above components are organically connected through the connecting pipe and the circuit control system. One whole constitutes an energy transportation system in which a multi-leg heat pipe system is combined with a multi-branch heat pump cycle refrigeration system, wherein the condensers one, two, three, condenser circulating pumps one, two, three, solenoid valves Second, third, liquid storage tank, evaporator circulation pump one, two, three, evaporator one, two, three, liquid storage tank, one-way valve one, three, five and mutual connection pipe and circuit control system organic connection One whole, constitutes a multi-branch dynamic heat pipe system; condenser one, two, three, one-way valve two, four, six, throttle valve one, two, three, liquid storage tank , evaporator circulation pump one, two, three, evaporator one, two, three, liquid storage tank, compressor one, two, three and mutual connection pipe and temperature adjustment and circuit control system organic connection as a whole, composed more Branch heat pump type circulating refrigeration system; When the system works in the heat pump cycle mode, the compressors one, two, three and the evaporator circulating pumps are one, two, three, and the one-way valves are in the on state, The same condenser condenser pump one, two, three closed, solenoid valve one, two, three and one-way valve one, three, five in the off state; when the system works in the heat pipe circulation mode, the condenser circulation pump one, two, Three and evaporator circulation pumps one, two, three 幵 start, solenoid valves one, two, three and one-way valves one, three, five are in the on state, the compressor one, two, three closed, one-way valve two, four Six is in the cutoff state, and the above two cycles can be switched according to the environment and needs.

[0007] The above-mentioned evaporation circulation branch, the condensation circulation branch 1, the evaporation cycle branch 2, the condensation cycle branch 2, the evaporation cycle branch 3 and the condensation cycle branch 3 are each an independent circulation branch. , there are independent circulation pumps or compressors, and their working operation does not affect each other.

[0008] The evaporator and the condenser described above can be opened separately, or two or three can be started simultaneously; when the system works in the heat pump cycle mode, a compressor is started first, and if the power demand is met, There is no need to start the second one. If it is not met, you need to start two or three compressors together. When the system works in the heat pipe circulation mode, start a circulating pump first. If the power demand is met, no need to 幵Start the second one. If it is not satisfied, you need to start two or three circulating pumps.

[0009] The above circuit control system has two temperature sensors respectively sensing the temperature of the area where the evaporator and the condenser are located, and selectively operating the multi-branch power heat pipe working mode and the heat pump cycle according to the comparison of the two temperature values. Cooling mode; the circuit control system also has two Hall current sensors for measuring the current of the evaporator and the condenser, respectively, and selectively opening the number of compressors or circulating pumps according to the comparison of the two current values , can be one, two or three.

Advantageous effects of the invention

Beneficial effect

[0010] Compared with the prior art, the present invention is a high-power energy-saving technology. The single-branch cycle is turned into a multi-branch cycle to increase power, and the heat pump cycle system and the heat pipe circulation system are integrated with each other to complement each other, making full use of natural cold sources and saving energy. Based on the original single-branch cycle, multiple heat pipe systems and heat pump systems are inserted to increase power. When the indoor required temperature is lower than the outdoor temperature, it is circulated through the heat pump. Cooling down, when the indoor set temperature is higher than the outdoor temperature, cooling through the heat pipe cycle, about two-thirds of the time in the northern part of the year, the outdoor temperature is lower than the indoor set temperature. In the heat pipe mode, the high-energy-consumption compressor does not need to be started, and only the low-energy heat pipe energy-saving module and the fan are used, and the energy consumption is extremely low. The two modes are interchangeable, which can extend the service life of the compression refrigeration unit while saving energy. This multi-branch heat pipe heat pump composite system can be applied to heat control and temperature control in large base stations, computer rooms and electrical equipment.

Brief description of the drawing

DRAWINGS

1 is a schematic structural view of an embodiment of a multi-branch heat pipe heat pump composite system.

[0012] FIG. 2 is a schematic structural view of an embodiment of a multi-branch heat pump operating mode of the system.

[0013] FIG. 3 is a schematic structural diagram of an implementation manner of a multi-branch heat pipe operating mode of the system.

[0014] In the figure: (11) condenser one; (12) condenser two; (13) condenser three; (21) evaporator one; (22) evaporator two; (23) evaporator three; a liquid storage tank; (41) a compressor one; (42) a compressor two; (43) a compressor three; (51) a throttle valve one; (52) a throttle valve two; (53) a throttle valve three; (61) Solenoid valve one; (62) Solenoid valve two; (63) Solenoid valve three; (71) Condenser circulating pump one; (72) Condenser circulating pump two; (73) Condenser circulating pump three; (81 Evaporator circulation pump one; ( ₈ 2) evaporator circulation pump two; (83) evaporator circulation pump three; (91) one-way valve one; (9 2) one-way valve three; (93) one-way valve five (101) check valve two; (102) check valve four; (103) check valve six.

BEST MODE FOR CARRYING OUT THE INVENTION

[0015] FIG. 1 is a multi-branch heat pipe heat pump composite system including an evaporation cycle branch, an evaporation cycle branch 2, an evaporation cycle branch 3, a condensation cycle branch 1, a condensation cycle branch 2, and condensation. Cyclic branch circuit and circuit control system; Evaporation cycle branch can be made 1-2 or 4-M according to needs, condensing cycle branch can be made 1-2 or 4-N according to needs, where M and There is no quantitative relationship between N; the evaporation cycle branch includes an evaporator one (21, a liquid storage tank ( ₃ ), an evaporator circulation pump one ( ₈₁ ), and an evaporation circulation branch two including an evaporator two (22, storage The liquid tank ( ₃ ), the evaporator circulating pump two (82), and the evaporation circulating branch three include an evaporator three (23, a liquid storage tank ( ₃ ), an evaporator circulating pump three (83); each The condensation circulation branch includes a heat pipe condensation circulation branch and a heat pump condensation circulation branch; the heat pipe condensation circulation branch includes a condenser one (11), a condenser circulation pump one (71), and a solenoid valve one (61) , liquid storage tank (3), one-way valve one (91), heat pipe condensation circulation branch two includes condenser two (12), condenser circulation pump two (72), solenoid valve two (62), liquid storage tank ( 3), check valve three (92), heat pipe condensation cycle branch three including condenser three (13), condenser circulation pump three (73), solenoid valve three

(63), liquid storage tank (3), check valve five (93); heat pump condensing circulation branch one includes condenser one (11), check valve two (101), throttle valve one (51), storage The liquid tank (3), the compressor one (41), the heat pump condensing circulation branch circuit 2 includes a condenser two (12), a check valve four (102), a throttle valve two (52), a liquid storage tank (3), Compressor 2 (42), heat pump condensing circulation branch 3 includes condenser three (13), check valve six (103), throttle three (53), liquid storage tank (3), compressor three (43) The evaporator circulation pump (81; 82; 83) is respectively connected to the evaporator (21; 22; 23) input end and the liquid storage tank

(3) The input end of the branch is located in the lower part of the liquid refrigerant liquid level in the liquid storage tank (3), and is independent of each other; the output end of the evaporator (21; 22; 23) and the liquid storage respectively The tanks (3) are connected, and the output ends of the branches are located at the upper part of the liquid refrigerant liquid level in the liquid storage tank (3), and are independent of each other; the check valves (91; 92; 93) are respectively connected to the compressor (41; 42; 43) connected in parallel between the input end of the condenser (11; 12; 13) and the liquid storage tank (3), the input end of the branch is located in the liquid storage tank (3) liquid refrigerant The upper part of the liquid level, and independent of each other; the condenser circulation pump (71; 72; 73) and the solenoid valve (61; 62; 63) series branch and check valve (101; 102; 103) and throttling The valve ( 51; 52; 53) is connected in parallel with the series branches, the output ends of which are connected to the liquid storage irrigation (3), and are independent of each other, and their input ends are respectively connected to the output ends of the condensers (11; 12; 13); By connecting all of the above components through the connecting pipe and the circuit control system as a whole, it constitutes a multi-branch a heat energy transportation system in which a heat pipe system is combined with a heat pump type circulating refrigeration system, wherein a condenser (11; 12; 13), a condenser circulation pump (71; 72; 73), and a solenoid valve (61; 62; 63), Liquid storage tank (3), evaporator circulation pump (81; 82; 83), evaporator (21; 22; 23), liquid storage tank (3), check valve (91

92; 93), interconnecting pipes and circuit control systems are organically connected as a whole, forming a multi-branch dynamic heat pipe system; condenser (11; 12; 13), check valve (101; 102; 103), section Flow valve

(51; 52; 53), liquid storage tank (3), evaporator circulation pump (81; 82; 83), evaporator (21; 22; 23), liquid storage tank (3), compressor (41; 42 ; 43), connecting pipes and circuit control The system is organically connected as a whole to form a multi-leg heat pump circulating refrigeration system. When the system is operated in the heat pump cycle mode, the compressor (41; 42; 43) and the evaporator circulation pump (81; 82; 83) are turned on, and the check valve (101; 102; 103) is in the on state, The condenser circulation pump (71; 72; 73) is closed, the solenoid valve (61; 62; 63) and the check valve (91; 92; 93) are in the off state; when the system is operated in the heat pipe cycle, the condenser circulation pump (71; 72; 73) and the evaporator circulation pump (81; 82; 83), the solenoid valve (61; 62; 63) and the check valve (91; 92; 93) are in the on state, the compressor ( 41; 42; 43) Closed, the check valve (101; 102; 103) is in the off state, the above two cycles can be switched according to the environment and needs.

[0016] When using the heat pump operating mode 吋, as shown in FIG. 2, the compressor (41; 42; 43) and the evaporator circulating pump

(81; 82; 83) 幵, the check valve (101; 102; 103) is in the on state, the same condenser circulation pump (71; 72; 73) is closed, the solenoid valve (61; 62; 63) and The check valve (91; 92; 93) is in the off state, and the evaporator circulation pump (81; 82; 83) extracts the liquid refrigerant in the liquid storage tank (3) and delivers it to the evaporator (21; 22; 23) The evaporator (21; 22; 23) is in contact with a high-temperature heat source, and the liquid working medium is heated by the high-temperature heat source in the evaporator (21; 22; 23) to evaporate into a gas, and absorbs heat, and the vaporized gas and part are not formed. The evaporated liquid intermediate medium is mixed with each other in a high-speed flow to form a gas-liquid two-phase fluid, and enters the liquid storage tank (3) for gas-liquid separation, and the gaseous refrigerant in the liquid storage tank (3) passes through the compressor (41; 42; 43) The extracted compression becomes a high temperature and high pressure state and is sent to the condenser condenser (11; 12; 13), and the high temperature and high pressure gaseous refrigerant is dissipated into a liquid state in the condenser condenser (11; 1 2; 13) Decompression of refrigerant, liquid refrigerant throttle valve (51; 52; 53) Down into the liquid storage (3), the gas-liquid cooling intermediate medium is separated in the liquid storage tank according to the respective physical properties, so that the heat transfer process of the heat pump work is completed.

[0017] Using the heat pipe operating mode 吋, as shown in FIG. 3, the condenser circulation pump (71; 72; 73) and the evaporator circulation pump (81; 82; 83) ,, solenoid valve (61; 62; 63) And the check valve (91; 92; 93) is in the on state, the compressor (41; 42; 43) is closed, the check valve (101; 102; 103) is in the off state, the evaporator circulation pump (81; 82; 83) Extract the liquid refrigerant in the liquid storage tank (3) and transport it to the evaporator (21; 22; 23). The evaporator (21; 22; 23) is in contact with the high temperature heat source, and the liquid working medium is in the evaporator (21). 22; 23) is heated by a high-temperature heat source to evaporate into a gas, and absorbs heat, and the gas formed by evaporation and a part of the liquid medium which is not evaporated are mixed with each other in a high-speed flow. The gas-liquid two-phase fluid enters the liquid storage tank (3) for gas-liquid separation. Under the action of the pumping pressure of the condenser circulation pump (71; 72; 73), the gaseous refrigerant in the liquid storage tank (3) Entering the condenser (11; 12; 13) through the check valve (91; 92; 93), the condenser (11; 12; 13) is in contact with the low temperature heat source, and the gaseous working medium is in the condenser (11; 12; 13) Condensed into a liquid by the cooling of the low-temperature heat source, and the heat is released. The liquid working medium formed by the condensation enters the liquid storage (3) through the condenser circulation pump (71; 72; 73), which performs gas-liquid separation, storage and distribution. , then proceed to the next iteration.

The multi-branch heat pipe heat pump composite system can be operated in the heat pump cooling mode according to the difference between the set temperature and the outdoor temperature required in the room (which can be fully automatic or manually adjusted). The heat pipe working mode achieves energy-saving operation under the premise of ensuring the indoor cooling requirement, and the service life of the compression refrigeration unit is extended at the same time; the liquid storage tank is designed to achieve the recycling of evaporation and condensation, and the interior of the evaporator is maximized. The limit is filled with liquid for evaporation, and the inside of the condenser is filled with gas to condense. When the outdoor temperature is high or the indoor load is too large, the heat pipe heat pump composite system runs the heat pump cooling mode, and the working principle is the same as that of the general variable frequency or non-inverter air conditioner. The heat in the room is dispersed into the outdoor space through the vapor compression refrigeration cycle to achieve the cooling effect of the indoor space. When the outdoor temperature is lower than the indoor temperature, the heat pump is turned off, the unit automatically enters the heat pipe working mode, and the gas is cooled by the heat pipe mode. With condensed in the condenser to the heat, and finally become the condensate, and the condensate flows down to the evaporator absorbs heat pipe heat mode in effect, the whole system will transfer heat to the outside through the indoor heat pipe mode.

Claims

Claim

[Claim 1] A multi-branch heat pipe heat pump composite system, comprising an evaporation cycle branch, a condensation cycle branch circuit and a circuit control system; and characterized in that it further comprises an evaporation cycle branch 2 and a condensation cycle branch 2 Evaporation cycle branch 3 and condensation cycle branch 3; Evaporation cycle branch can be made 1-2 or 4-M according to needs, condensing cycle branch can be made 1-2 or 4-N according to need, There is no quantitative relationship between M and N; the evaporation cycle branch includes an evaporator one

(21), liquid storage tank (3), evaporator circulation pump one (81), evaporation circulation branch two including evaporator two (22), liquid storage tank (3), evaporator circulation pump two (82), evaporation The circulation branch circuit 3 includes an evaporator three (23), a liquid storage tank (3), and an evaporator circulation pump three (83); each of the condensation circulation branches includes a heat pipe condensation circulation branch and a heat pump condensation cycle branch. The heat pipe condensation circulation branch includes a condenser one (11), a condenser circulation pump one (71), a solenoid valve one (61), a liquid storage tank (3), a one-way valve one (91), a heat pipe condensation cycle The branch circuit 2 includes a condenser two (12), a condenser circulation pump two (72), a solenoid valve two (62), a liquid storage tank (3), a one-way valve three (92), and a heat pipe condensation circulation branch three including condensation Three (13), condenser circulation pump three (73), solenoid valve three (63), liquid storage tank (3), one-way valve five (93); heat pump condensation circulation branch one including condenser one (11) , check valve two (101), throttle valve one (51), liquid storage tank (3), compressor one (41), heat pump condensing circulation branch 2 includes condenser two (12), check valve four

(102), throttle valve two (52), liquid storage tank (3), compressor two ( ⁴² ), heat pump condensation circulation branch three including condenser three (13), one-way valve six (103), throttling Valve three (5 3), liquid storage tank (3), compressor three (43); the evaporator circulation pump (81; 82; 83) is connected to the evaporator (21; 22; 23) input and storage respectively Between the liquid tanks (3), the input end of the branch is located at the lower part of the liquid refrigerant liquid level in the liquid storage tank (3), and is independent of each other; the output ends of the evaporators (21; 22; 23) are respectively The liquid storage tank (3) is connected, and the output end of the branch road is located at the upper part of the liquid refrigerant liquid level in the liquid storage tank (3), and is independent of each other; the check valve (91; 92; 93) respectively The compressor (41; 42; 43) is connected in parallel between the input of the condenser (11; 12; 13) and the reservoir (3), and the input of the branch is located in the liquid storage tank (3) Upper part of the refrigerant level , and independent of each other; the condenser circulation pump (71; 72; 73) and the solenoid valve (61; 62; 63) series branch and the check valve (101; 102; 103) and the throttle valve (51; 52; 53) The series branches are connected in parallel, and the output ends are connected to the liquid storage (3), and are independent of each other, and their input ends are respectively connected to the output ends of the condensers (11; 12; 13); The organic connection of the connecting pipe and the circuit control system as a whole constitutes a thermal energy transportation system in which the multi-branch power heat pipe system and the heat pump type circulating refrigeration system are combined, wherein the condenser (11; 12; 13) and the condenser cycle Pump (71; 72; 73), solenoid valve (61; 62; 63), reservoir (3), evaporator circulation pump (81; 82; 83), evaporator (21; 22; 23), liquid storage Tank (3), check valve (91; 92; 93), interconnecting piping and circuit control system are integrated as a whole, forming a multi-branch dynamic heat pipe system; condenser (11; 12; 13), one-way Valve (101; 102; 103), throttle valve (51; 52; 53), liquid storage tank (3), steaming Circulating pump (81; 82; 83), evaporator (21; 22; 23), liquid storage tank (3), compressor (41; 42; 43), interconnecting piping and circuit control system Overall, it constitutes a multi-leg heat pump type circulating refrigeration system; when the system works in the heat pipe circulation mode, the condenser circulation pump

(71; 72; 73) and the evaporator circulation pump (81; 82; 83), the solenoid valve (61; 62; 63) and the check valve (91; 92; 93) are in the on state, the compressor ( 41; 42; 43) closed, check valve (101; 102; 103) is in the off state; when the system works in the heat pump cycle, compressor (41; 42; 43) and evaporator circulation pump (81; 82; 83) 幵, the check valve (101; 102; 103) is in the on state, the same condenser circulation pump (71; 72; 73) is closed, the solenoid valve (61; 62; 63) and the check valve (91 ; 92 ; 93) In the off state, the above two cycles can be switched according to the environment and needs.

A multi-branch heat pipe heat pump composite system according to claim 1, further characterized in that: the evaporation cycle branch one, the condensation cycle branch one, the evaporation cycle branch two, the condensation cycle branch two, and the evaporation cycle The branch three and the condensing circulation branch are respectively independent bypass branches, and there are independent circulation pumps or compressors, and their working operation does not affect each other.

A multi-branch heat pipe heat pump composite system according to claim 1 further characterized in that : The circuit control system has two temperature sensors respectively sensing the temperature of the area where the evaporator and the condenser are located, and according to the comparison of the two temperature values, selectively operating the multi-branch dynamic heat pipe working mode and the heat pump circulating cooling working mode The circuit control system also has two Hall current sensors for measuring the currents of the evaporator and the condenser, and according to the comparison of the two current values, selectively opening the number of compressors or circulating pumps, One, two or three.