CN202835574U - Alternating-current direct-current dual power air conditioner - Google Patents

Abstract

The utility model relates to an alternating-current direct-current dual power air conditioner which comprises a control system and a compression refrigerating system. The compression refrigerating system comprises a compressor, an evaporator, a condenser, an evaporation fan and a condensate fan. The alternating-current direct-current dual power air conditioner has an alternating-current power supply and a direct-current power supply, the compressor is driven by the alternating-current power supply, the condensate fan and the evaporation fan are driven by the direct-current power supply, and the rotating speed of the evaporation fan and / or the condensate fan is adjustable. According to the alternating-current direct-current dual power air conditioner, by means of adjustment of the rotating speed of the fans, effects of energy conservation and noise reduction are achieved, and by means of dual power input of the alternating-current and the direct-current, the problem of heat dissipation of a cabinet when the alternating-current cannot be normally supplied is effectively solved.

Description

AC and DC dual power supply air conditioner

technical field

The utility model relates to an air conditioner, in particular to an air conditioner powered by AC and DC dual power supplies, and belongs to the technical field of refrigeration equipment.

Background technique

In the prior art, the temperature control equipment such as industrial air conditioners used is mostly in the AC power supply mode, the full DC power supply mode or the AC and DC hybrid power supply mode using inverter equipment. Among them, the defect of the temperature control equipment using the AC power supply mode is that when the AC power supply is interrupted or the voltage is too low, the temperature control equipment cannot operate normally, and the fan speed regulation function cannot be realized by using the AC power supply, so that the purpose of noise reduction and cost reduction cannot be achieved. .

There are two main defects in the use of temperature control equipment using full DC power supply mode. On the one hand, the price of DC compressors is relatively expensive, which leads to an increase in the overall cost of temperature control equipment; on the other hand, because the DC power used by temperature control equipment is often The battery and other backup power, and the on-site battery and other backup power are mainly to supply power for the on-site components and equipment. Because the temperature control equipment, especially the compressor components, consume a lot of power, the overall capacity of the battery will be increased, which will lead to a higher cost. cost.

There are also two main defects of the temperature control equipment using the AC-DC hybrid power supply mode using the inverter equipment. If the AC is converted to DC, although the speed regulation function of the fan can be realized, the cost of the DC compressor is relatively high. , the temperature control equipment cannot operate normally; if the DC is converted to AC, due to the large power consumption of the compressor, the capacity of the on-site battery and other backup power sources will be increased, and the overall cost will be increased.

At the same time, cabinets that use batteries and other backup power sources need to realize the exhaust function due to the generation of exhaust gases such as hydrogen and acid gases. In the prior art, fans are often installed on the top or side of the cabinet with batteries, which will not only Damage the integral sealing performance of cabinet body, also not attractive in appearance.

Utility model content

The purpose of this utility model is to provide an AC-DC dual power supply air conditioner, the air conditioner has AC power supply and DC power supply two-way power input, the compressor is driven by the AC power supply, the condensing fan and the evaporating fan are driven by the The speed of the fan can be adjusted to achieve the purpose of energy saving and noise reduction; and when the AC power supply cannot be supplied normally, the heat dissipation function inside and outside the cabinet can still be realized.

To achieve the above purpose, the utility model relates to an AC-DC dual power supply air conditioner, which includes a control system and a compression refrigeration system. Compression refrigeration system includes compressor, evaporator, condenser, evaporating fan and condensing fan. The AC-DC dual power supply air conditioner has two power inputs of AC power supply and DC power supply, the compressor is driven by the AC power supply, and the condensing fan and the evaporating fan are driven by the DC power supply.

As a further improvement of the utility model, the rotating speed of the evaporating fan and/or the condensing fan is adjustable.

As a further improvement of the utility model, the control system can automatically adjust the speed of the condensing fan or the evaporating fan or both the condensing fan and the evaporating fan according to the temperature outside the cabinet (ambient temperature) and/or the temperature inside the cabinet.

As a further improvement of the utility model, the speeds of the condensing fan or the evaporating fan or both of the condensing fan and the evaporating fan can be manually set according to the requirements of the operating environment on the operating noise of the air conditioner.

As a further improvement of the utility model, it also has a damper assembly, an air inlet in the cabinet, an air outlet in the cabinet, an air inlet outside the cabinet, and an air outlet outside the cabinet. The damper assembly includes a damper motor and a damper, wherein the damper motor is driven by a DC power supply. Then drive the air door to rotate between the first state and the second state. When the air door is in the first state, the air inlet in the cabinet is connected with the air outlet outside the cabinet, and the air inlet outside the cabinet is connected with the air outlet in the cabinet; when the air door is in the second state , the air inlet inside the cabinet is connected with the air outlet inside the cabinet, and the air inlet outside the cabinet is connected with the air outlet outside the cabinet.

As a further improvement of the utility model, the damper assembly, the evaporating fan, the condensing fan, the air inlet inside the cabinet, the air outlet inside the cabinet, the air inlet outside the cabinet and the air outlet outside the cabinet constitute a fresh air/harmful gas discharge system. When power is supplied, the control system controls the compression refrigeration system and the fresh air/hazardous gas discharge system to operate alternately; when the compression refrigeration system is running, the compressor, evaporating fan, and condensing fan are all turned on, and the air door motor drives the air door to rotate to the second state above; the fresh air/hazardous gas exhaust system When the gas discharge system is running, the compressor stops, the evaporation fan and the damper motor are turned on, and the damper rotates to the above-mentioned first state; when the AC power supply cannot be supplied normally, the fresh air/harmful gas discharge system can also operate independently.

As a further improvement of the utility model, the operating mode of the harmful gas discharge system includes an active discharge mode and a passive discharge mode, and one of the active discharge mode and the passive discharge mode can be selected for operation.

As a further improvement of the utility model, the operating mode of the harmful gas exhaust system also includes a manual exhaust mode, which can coexist with an active exhaust mode or a passive exhaust mode.

As a further improvement of the utility model, when the temperature inside the cabinet is greater than or equal to the refrigeration set temperature, and the temperature outside the cabinet (environment temperature) is lower than the temperature inside the cabinet, the difference is greater than or equal to a certain set value (fresh air priority temperature difference value) , the control system starts the fresh air system first to reduce the temperature in the cabinet; when the temperature in the cabinet drops to a temperature difference between inside and outside that is less than the difference between the fresh air priority temperature difference and the fresh air priority value deviation, the control system shuts down the fresh air system.

As a further improvement of the utility model, when the continuous running time of the fresh air system is greater than a certain set time value (fresh air priority maximum running time), the control system shuts down the fresh air system and starts the compression refrigeration system until the temperature in the cabinet is lower than the set temperature of refrigeration When the difference from the refrigeration set temperature deviation, the compression refrigeration system is turned off.

As a further improvement of the utility model, the operation mode of the harmful gas discharge system is prioritized over the operation mode of the fresh air system and the compression refrigeration system.

As a further improvement of the utility model, a heater is also included. When the temperature in the cabinet is lower than the heating start temperature, the heater is operated, and when the temperature in the cabinet is higher than the heating shutdown temperature, the heater is stopped.

As a further improvement of the utility model, the heater can be driven by an AC power supply or a DC power supply.

As a further improvement of the utility model, it also includes a gas-liquid heat exchange system, which includes an inner heat exchanger, an outer heat exchanger and a fluid drive device, wherein the inner heat exchanger shares the evaporator fan with the evaporator of the compression refrigeration system, and the outer heat exchanger Shared condensing fan with the condenser of the compression refrigeration system.

As a further improvement of the utility model, it also includes a heat pipe heat exchange system, which includes an evaporating end and a condensing end, wherein the evaporating end shares an evaporating fan with the evaporator of the compression refrigeration system, and the condensing end shares a condensing fan with the condenser of the compression refrigeration system.

As a further improvement of the utility model, the evaporating end and the condensing end of the heat pipe heat exchange system are of an integral structure or a split structure.

The beneficial effects of the utility model are: by adjusting the speed of the fan, the effects of energy saving and noise reduction are realized, and through the AC and DC dual-circuit power input, the heat dissipation problem of the cabinet when the AC power cannot be normally supplied is effectively solved.

Description of drawings

Fig. 1 is the perspective view of the first embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 2 is a perspective view from another angle of the first embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 3 is a side view of the damper in the first state of the first embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 4 is a side view of the damper in the second state of the first embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 5 is the electrical control diagram of the first embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 6 is a system schematic diagram of the second embodiment of the AC-DC dual power supply air conditioner of the present invention;

Fig. 7 is a system schematic diagram of the third embodiment of the AC/DC dual power supply air conditioner of the present invention.

Detailed ways

Please refer to Fig. 1 to Fig. 5, which are the first embodiment of the utility model, which provides an AC/DC dual power supply air conditioner 100 installed in the cabinet/control cabinet for air conditioning, which includes a housing 1, a control System 2, compression refrigeration system and fresh air/harmful gas discharge system. The AC/DC dual power supply air conditioner 100 of the present invention can also have a heater 13 for heating the cabinet when the temperature is low.

The casing 1 has a front panel 11 and an opposite rear panel 12 . The front panel 11 is provided with an air outlet 112 outside the cabinet at the upper part and an air inlet 110 outside the cabinet at the lower part facing the outside of the cabinet (ie, the external environment). The rear panel 12 is provided with an upper cabinet air inlet 120 facing inside the cabinet and a lower cabinet air outlet 122 .

The compression refrigeration system includes a compressor 3, a condenser 4 opposite to the air outlet outside the cabinet, a throttling element, an evaporator 6 opposite to the air outlet inside the cabinet, and an auxiliary pipeline 7.

The fresh air/harmful gas discharge system consists of the air inlet 120 inside the cabinet, the air outlet 122 inside the cabinet, the air inlet 110 outside the cabinet, the air outlet 112 outside the cabinet, the evaporator fan 8 opposite to the air inlet 120 inside the cabinet, and the air inlet 110 opposite to the outside of the cabinet. Condensing blower fan 9, damper assembly 10 are formed.

The AC/DC dual power supply air conditioner 100 also has a partition 14 inside the air conditioner 100 which separates it into an inner circulation heat exchange system and an outer circulation heat exchange system which are isolated from each other.

It should be noted that the inside of the above-mentioned cabinet is the evaporation side of the AC-DC dual power supply air conditioner 100 of the present invention, and the outside of the cabinet is the condensation side of the AC-DC dual power supply air conditioner 100 of the present invention. The inside of the cabinet and the cabinet in the following description Outer sides all have the same definition as here.

As shown in FIG. 1 and FIG. 2 , the air conditioner 100 with AC and DC dual power supplies of the present invention has two power inputs of AC and DC. The AC power supply is 220V single-phase power or 380V three-phase power, and the DC power supply is 33V~72V DC power provided by UPS or battery. In a preferred embodiment of the present utility model, the damper assembly 10 at least includes a damper 101 and a damper motor 102 for driving the damper 101 to switch between the first state and the second state. The damper motor 102, the evaporating fan 8 and the condensing fan 9 are driven by a DC power supply, and the compressor 3 is driven by an AC power supply. The heater 13 can be powered by both AC and DC.

The control system 2 has an intelligent control board 21, which is connected to the DC power supply and the AC power supply, and can upload the working status when the AC power supply is cut off or the voltage is too low. The control system 2 is also provided with an AC monitor connected to the intelligent control board 21 to monitor the status of AC power failure or low voltage. The intelligent control board 21 is also connected to the damper assembly 10 to send a signal to the damper motor 102 to drive the damper 101 to rotate between the first state and the second state. The intelligent control panel 21 also receives the signals of the ambient temperature sensor, the condenser outlet temperature sensor, the evaporator outlet temperature sensor, and the temperature sensor in the cabinet to correspondingly start the compression refrigeration system or the fresh air/harmful gas discharge system or the heater 13 . The intelligent control board 21 also controls the condensing fan 9 and the evaporating fan 8 to send speed regulation signals to adjust the speeds of the evaporating fan 8 and the condensing fan 9 according to different operating states.

The AC-DC dual power supply air conditioner 100 of the present utility model can realize the following functions:

1. Condensing fan and evaporating fan speed regulation

The speeds of the condensing fan 9 or the evaporating fan 8 or both the condensing fan 9 and the evaporating fan 8 can be automatically adjusted by the control system according to the ambient temperature and/or the temperature in the cabinet.

⑴ Condensing fan speed regulation

① Except for the running state of the compression refrigeration system, the condensing fan 9 is in the stopped state, and the speed is 0;

② When the compression refrigeration system starts to run, the condensing fan 9 starts, and starts running later than the compressor. When the compression refrigeration system starts running, the higher the temperature outside the cabinet, the faster the speed of the condensing fan 9 . In the preferred implementation of the present utility model, when the temperature outside the cabinet is less than or equal to 20°C, the condensing fan 9 runs at a speed of 50%; when the temperature outside the cabinet is greater than 20°C and less than or equal to 35°C, the condensing fan 9 runs at a speed of 80% ; When the temperature outside the cabinet is greater than 35°C and less than or equal to 45°C, the condensing fan 9 runs at 90% speed; when the temperature outside the cabinet is greater than 45°C, the condensing fan 9 runs at full speed. the

⑵ Evaporation fan speed regulation

① In the preferred embodiment of the present utility model, in the standby state, the evaporating fan 8 operates at a dormant speed of 30%; in other embodiments, the evaporating fan 8 can run at a dormant speed of 10% to 50%;

② When the compression refrigeration system starts to operate, the evaporating fan 8 runs at 85% speed; when the temperature in the cabinet exceeds a certain set temperature value, the evaporating fan 8 runs at full speed;

③ When the heating, fresh air/harmful gas discharge system is in operation, the evaporation fan 8 runs at full speed.

In addition, according to the requirements of the operating environment for the operating noise of the air conditioner, the condensing fan 9 or the evaporating fan 8 or the speeds of the condensing fan 9 and the evaporating fan 8 can be manually graded and set to the first speed or the second speed or the first speed. Three speeds.

2. Harmful gas exhaust system

In addition to the fault handling procedure, the harmful gas discharge procedure is always the priority. When the harmful gas needs to be discharged, the current work is stopped, and the previous procedure is continued after the harmful gas discharge is completed.

Harmful gases mainly include hydrogen, acid gas, etc. There are three modes of discharge: active discharge, passive discharge and manual discharge. Among them, the active discharge mode refers to detecting the concentration or pressure of harmful gases in the cabinet through the atmosphere sensor, and then drives the damper assembly to operate through the control system to realize the discharge of harmful gases; the passive discharge and manual discharge modes refer to no active discharge, which is manually set A fixed timing device controls the timing opening and closing of the damper assembly, thereby realizing the function of harmful gas emission. Active discharge and passive discharge can be selected, the default is passive discharge mode, and manual discharge mode exists at the same time.

The damper motor 102 and the evaporating fan 8 are opened when the harmful gas is discharged. The damper motor 102 drives the damper 101 to rotate to the first state shown in FIG. Harmful gas can be discharged to the outside through the air inlet 120 outside the cabinet through the air outlet 112 outside the cabinet, and the fresh air outside the cabinet can enter the inside of the cabinet through the air inlet 110 outside the cabinet through the air outlet 122 inside the cabinet. Since the evaporating fan 8 and the condensing fan 9 of the AC/DC power supply air conditioner 100 of the present utility model are speed-adjustable fans, the evaporating fan 8 or the condensing fan 9 operate at different speeds under different conditions to save energy. In the standby state, the evaporating fan 8 operates at a dormant speed of 10-50%, preferably at a 30% dormant speed; when the harmful gas discharge system is in operation, the evaporating fan 8 runs at full speed.

3. Fresh air system

The starting conditions of the fresh air system are as follows: when the cabinet temperature T0 measured by the cabinet temperature sensor is greater than or equal to the cooling set temperature T1, and the ambient temperature measured by the ambient temperature sensor is lower than the cabinet temperature T0, the difference between the two △T0 is greater than or equal to When the fresh air priority temperature difference is △T1, start the fresh air system to lower the temperature inside the cabinet.

At this time, the control system 2 sends a signal to control the air door motor 102, and then drives the air door 101 to open and is in the first state, that is, the air inlet 120 in the cabinet communicates with the air outlet 112 outside the cabinet, and the air inlet 110 outside the cabinet communicates with the air outlet 122 in the cabinet, and the evaporation The fan 8 starts running and reaches full speed within seconds. When the temperature T0 in the cabinet drops to the temperature difference between inside and outside △T0 is less than the difference between the fresh air priority temperature difference △T1 and the fresh air priority deviation value △T2, the fresh air system is turned off. When the continuous running time of the fresh air system is greater than the maximum running time of fresh air priority D1, the fresh air system is turned off and the compression refrigeration system is started until the temperature T0 in the cabinet is less than the difference between the cooling set temperature T1 and the deviation value △T3 of the cooling set temperature, at this time Turn off the compression refrigeration system.

4. Compression refrigeration system

The starting condition of the compression refrigeration system is: when the temperature T0 in the cabinet is greater than or equal to the refrigeration set temperature T1, and the fresh air system is not activated, the compression refrigeration system is started. When the compressor 3 is cooling, both the condensing fan 9 and the evaporating fan 8 start later than the compressor 3, and the delayed start time of the two compressors can be the same or different. Close the compression refrigeration system until the temperature T0 in the cabinet is less than the difference between the refrigeration set temperature T1 and the deviation ΔT3 of the refrigeration set temperature.

5. Heating

The heating system is started when the temperature T0 in the cabinet is lower than the heating set temperature T3. Start the evaporation fan 8 during heating, and the evaporation fan 8 is delayed than the heater 13 and stops running.

When the temperature T0 in the cabinet is higher than the sum of the heating set temperature T3 and the heating temperature deviation value ΔT4, the heater 13 is stopped.

When the AC power supply is normal, the AC-DC dual power supply air conditioner 100 of the present utility model is powered by the AC-DC dual power supply, and its compression refrigeration system, fresh air/harmful gas discharge system, and heater 13 can all work normally; when the AC power cannot work normally, When the power is cut off or the voltage is too low, the DC power supply can still control the fresh air/hazardous gas discharge system, and the heater 13 can realize the operation or heating function of the fresh air/hazardous gas discharge system.

Please refer to Figure 6, which shows the system schematic diagram of the AC-DC dual power supply air conditioner 100' according to the second embodiment of the present invention, which is the integration of the compression refrigeration system and the gas-liquid heat exchange system, and also has a control system (not shown Diagram) Turn on or off the compression refrigeration system or the gas-liquid heat exchange system according to different temperature conditions. Wherein, the compression refrigeration system has a compressor 3 , an evaporator 6 , a condenser 4 , an evaporating fan 8 and a condensing fan 9 . The gas-liquid heat exchange system includes an inner heat exchanger 20 , an outer heat exchanger 22 , a fluid drive device 23 , and a fluid storage constant pressure device 25 . Wherein the inner heat exchanger 20 and the evaporator 6 share the evaporating fan 8 , and the outer heat exchanger 22 and the condenser 4 share the condensing fan 9 . In the AC-DC dual power supply air conditioner 100 ′, the compressor 3 is driven by the AC power supply, and the evaporating fan 8 and the condensing fan 9 are driven by the DC power supply. When the AC power supply is normally supplied, the compression refrigeration system and the gas-liquid heat exchange system of the AC-DC dual power supply air conditioner 100' can work normally; It can drive the evaporating fan 8 and the condensing fan 9 to operate normally, so as to maintain the normal operation of the gas-liquid heat exchange system.

Please refer to Figure 7, which shows the system schematic diagram of the AC-DC dual power supply air conditioner 100'' of the third embodiment of the present invention, which is the integration of the compression refrigeration system and the heat pipe heat exchange system, and also has a control system (not shown in the figure shown) to control the opening and closing of the compressor 3, the evaporating fan 8 and the condensing fan 9. Among them, the compression refrigeration system and the heat pipe heat exchange system can choose to operate independently or in combination. When the compression refrigeration system operates independently, the heat pipe heat exchange system is in a stop working state because it does not have the temperature difference condition for one-way heat transfer. The compression refrigeration system has a compressor 3 , an evaporator 6 , a condenser 4 , an evaporating fan 8 and a condensing fan 9 . The heat pipe heat exchange system has an evaporation end 26 and a condensation end 28 . The evaporating end 26 shares the evaporating fan 8 with the evaporator 6 , and the condensing end 28 shares the condensing fan 9 with the condenser 4 . The evaporating end 26 and the condensing end 28 in the heat pipe heat exchange system can be of an integral structure or a split structure. In the AC-DC dual power supply air conditioner 100 ″, the compressor 3 is driven by the AC power supply, and the evaporating fan 8 and the condensing fan 9 are driven by the DC power supply. When the AC power supply is normal, the compression refrigeration system and the heat pipe heat exchange system of the AC-DC dual power supply air conditioner 100'' can work normally; It can drive the evaporating fan 8 and the condensing fan 9 to operate normally, so as to maintain the normal operation of the heat pipe heat exchange system. the

In particular, it should be pointed out that the AC/DC dual power supply air conditioners 100, 100' and 100'' are only used as examples in the specific implementation of the utility model. The principle of the novel reveal. For those of ordinary skill in the art, the equivalent changes made under the teaching of the utility model for the utility model should still be included in the scope of claims of the utility model.

Claims (11)

1. An AC-DC dual power supply air conditioner, which comprises a control system and a compression refrigeration system; the compression refrigeration system comprises a compressor, an evaporator, a condenser, an evaporation fan and a condensation fan; it is characterized in that: The AC-DC dual power supply air conditioner has two power inputs of AC power supply and DC power supply, the compressor is driven by the AC power supply, and the condensing fan and the evaporating fan are driven by the DC power supply. 2. The AC/DC dual power supply air conditioner according to claim 1, wherein the speed of the evaporating fan and/or the condensing fan is adjustable. 3. The AC-DC dual power supply air conditioner as claimed in claim 2, characterized in that: the speed of the condensing fan or the evaporating fan or the speed of the condensing fan and the evaporating fan can be adjusted by the control system according to the temperature outside the cabinet and/or the temperature inside the cabinet Perform automatic adjustment. 4. The AC-DC dual power supply air conditioner as claimed in claim 2, characterized in that: according to the requirements of the operating environment for the operating noise of the air conditioner, the condensing fan or the evaporating fan or the speed of the condensing fan and the evaporating fan can be manually controlled. Binning settings. 5. The AC-DC dual power supply air conditioner as claimed in claim 1, characterized in that: it also has a damper assembly, an air inlet in the cabinet, an air outlet in the cabinet, an air inlet outside the cabinet, and an air outlet outside the cabinet; the damper assembly includes a damper motor and The damper, wherein the damper motor is driven by a DC power supply, which can further drive the damper to rotate between the first state and the second state. When the damper is in the first state, the air inlet in the cabinet is connected to the air outlet outside the cabinet, and the air inlet outside the cabinet is connected to the air outlet outside the cabinet. The air outlet in the cabinet is connected; when the damper is in the second state, the air inlet in the cabinet is connected with the air outlet in the cabinet, and the air inlet outside the cabinet is connected with the air outlet outside the cabinet. 6. The AC-DC dual power supply air conditioner as claimed in claim 5, wherein the damper assembly, the evaporating fan, the condensing fan, the air inlet inside the cabinet, the air outlet inside the cabinet, the air inlet outside the cabinet and the air outlet outside the cabinet constitute the fresh air / Harmful gas discharge system, when the AC and DC dual power supplies are powered at the same time, the control system controls the compression refrigeration system and the fresh air/hazardous gas discharge system to operate alternately. 7. The AC-DC dual power supply air conditioner as claimed in claim 6, characterized in that: it also includes a heater, which operates the heater when the temperature inside the cabinet is lower than the heating start temperature, and when the temperature inside the cabinet is higher than the heating off temperature, Stop running the heater. 8. The air conditioner with AC and DC dual power sources as claimed in claim 7, wherein the heater can be driven by AC power or DC power. 9. The AC-DC dual power supply air conditioner as claimed in claim 1, characterized in that: it also includes a gas-liquid heat exchange system, which includes an inner heat exchanger, an outer heat exchanger and a fluid drive device, wherein the inner heat exchanger and the compression refrigeration The evaporator of the system shares the evaporating fan, and the external heat exchanger and the condenser of the compression refrigeration system share the condensing fan. 10. The AC-DC dual power supply air conditioner as claimed in claim 1, characterized in that: it also includes a heat pipe heat exchange system, which includes an evaporation end and a condensation end, wherein the evaporation end shares an evaporation fan with the evaporator of the compression refrigeration system, and the condensation The end shares the condensing fan with the condenser of the compression refrigeration system. 11. The AC/DC dual power supply air conditioner according to claim 10, wherein the evaporating end and the condensing end of the heat pipe heat exchange system are of an integrated structure or a separate structure.

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