Temperature control dominant type heat pump power-off anti-freezing system

Abstract

The temperature control type heat pump power-off anti-freezing system. When the power supply is cut off or in power failure, the system uses the battery power, sets temperature and liquid level sensors, and injects air into the water circulation system under the condition, so that the outdoor equipment and the water in the waterway are emptied and kept in the inflated state. After the power is restored, the air in the water circulation system is discharged, and the heat pump is restarted. The temperature control technology is simple and mature, and the cost is low.

Description

Technical Field

[0001] This utility model is specifically designed to prevent freezing of water pipes in conventional heat pump hot water or heating systems during abnormal power outages or interruptions. In northern winters, heat pump hot water or heating circulation systems sometimes experience sudden power outages, causing equipment to malfunction and potentially leading to frozen water pipes or even equipment damage. This invention presents an automatic air-filling and purging antifreeze system for outdoor water pipes and equipment, ensuring the safety of equipment and water pipes during power outages. The basic technical approach involves using battery power during a power outage to drive the controller and DC air pump, automatically purging water from outdoor pipes and equipment into a water tank or indoor auxiliary container. Upon restoration of power, the air is automatically purged, restarting the equipment. Background Technology

[0002] Heat pumps are widely used for clean heating in northern China. When the equipment is running normally, the antifreeze measures for the water system pipes and condensers are generally in place. However, in the event of a sudden power outage, the current practice is simply to manually drain the water from the equipment and pipes, refill the water when power is restored, and restart the equipment. This makes equipment operation and management very troublesome. In the worst case scenario, unattended equipment may freeze and become unusable. This problem is becoming increasingly common and prominent, especially with the widespread use of small-scale equipment in rural households. Previously, the applicant submitted an invention patent application, "Heat Pump Power Outage Antifreeze System" (application number: 2025100516102), and a utility model application, "Heat Pump Power Outage Antifreeze System with Vertical Water Sealing Section," to the State Intellectual Property Office. This utility model improves upon these by replacing pressure control with temperature control and adds a water tank level alarm function. Summary of the Invention

[0003] The inventor has designed a new control system as follows:

[0004] A battery-powered operation control system starts operating in the event of a power outage. The system uses a condition controller to monitor power supply voltage parameters and water tank level sensor signals to alert the user; it also monitors antifreeze temperature parameters, temperature sensor parameters at the vent valve, balance temperature sensor parameters, and circulating pump power current signals. Based on these parameters and signals, it determines whether to open and close the flow-stop electric valve, start and stop the DC air pump, open and close the electromagnetic vent valve, and open and close the capacity-increasing electric valve.

[0005] The technical solution of this utility model is as follows:

[0006] A temperature-controlled heat pump power-off antifreeze system comprises a condition controller, a circulating pump current sensor, a water tank level sensor, a heat pump circulating heating water circuit, and an antifreeze temperature sensor, an air-filling and air-filling mechanism, a gas-liquid balance mechanism, and a flow-stopping electric valve installed on the water circuit. Its features include: the air-filling and air-filling mechanism mainly includes a DC air pump, a one-way air inlet valve, a temperature sensor at the air inlet valve, and an air outlet valve; the heat pump circulating heating water circuit has at least one hot water tank, one circulating water pump, and one heat pump condenser; at least one flow-stopping electric valve is provided; and the control output of the condition controller is connected to the air-filling and air-filling mechanism, the gas-liquid balance mechanism, and the flow-stopping electric valve.

[0007] The present invention is further characterized in that: when the hot water tank is a closed pressurized water tank, the gas-liquid balance mechanism consists of a vertical sealing section, an internal expansion tank, a capacity-increasing electric valve, and a temperature sensor installed on the vertical sealing section; when the hot water tank is an open atmospheric pressure water tank, the gas-liquid balance mechanism is allowed to be without an internal expansion tank and a capacity-increasing electric valve.

[0008] The present invention is further characterized in that: the condition controller controls at least the following actions: opening and closing of the flow-cutting electric valve, opening and closing of the electric exhaust valve, opening and closing of the capacity-increasing electric valve, and starting and stopping of the DC charging valve, and is equipped with a battery and an AC charger, and allows the installation of a power supply failure alarm and a liquid level over-limit alarm.

[0009] The present invention is further characterized in that: the DC air pump in the inflation and deflation mechanism is equipped with a storage battery and an AC charger; the deflation valve can be either manual or electric; and the electric deflation valve can be equipped with an additional deflation water-blocking mechanism.

[0010] The present invention is further characterized in that: the charger of the condition controller and the charger of the DC air pump are combined into one, and the output is connected to the charging terminal of their respective batteries respectively; the battery of the condition controller and the battery of the DC air pump are combined into one, and the battery output lines are connected to their respective DC power terminals respectively.

[0011] The present invention is further characterized in that: it allows the inflation and deflation mechanism and the condition controller to be integrated into one unit; it allows the inflation and deflation mechanism and the flow-stopping electric valve to be integrated into one unit; it allows the condition controller, the inflation and deflation mechanism and the flow-stopping electric valve to be integrated into one unit; and it allows the condition controller to be integrated into the heat pump operation controller.

[0012] The present invention is further characterized in that: in the gas-liquid balance mechanism, the internal expansion tank and the capacity-increasing electric valve can be integrated into one unit; the vertical sealing section, temperature sensor, expansion tank, and capacity-increasing electric valve can be integrated into one unit. The present invention is further characterized in that: the temperature sensor in the gas-liquid balance mechanism can be replaced with a liquid level sensor; the temperature sensor at the exhaust valve can be replaced with a liquid level sensor; the water tank liquid level sensor can be omitted; and the circulating pump current sensor can be omitted.

[0013] A further feature of this invention is that, when the shut-off electric valve is replaced with a normally closed solenoid valve, it is allowed to operate independently of the condition controller.

[0014] The present invention is further characterized in that the addition of valves, filters, flow meters, temperature measuring ports, pressure measuring ports, crossover lines, sewage outlets, and insulation facilities to the heat pump circulating water heating circuit does not subvert the innovative idea of ​​this design and falls within the scope of this patent.

[0015] The beneficial effects of this utility model are:

[0016] (1) In the event of a power outage during winter operation of the heat pump, this utility model avoids the trouble of drainage and water injection, simplifies the difficulty of equipment management, frees up manpower, and reduces operating costs.

[0017] (2) This utility model is applied to unattended heat pump heating systems, which can effectively avoid the phenomenon of equipment and pipeline freezing and scrapping caused by sudden power outages, and reduce maintenance rate and maintenance cost.

[0018] (3) Heat pump heating systems can now stop using antifreeze, a high-cost and environmentally unfriendly medium.

[0019] (4) For heat pump heating systems that do not have "automatic start-up upon power-on", the use of this system can avoid the risk of the system refreezing after exhaust due to lack of human intervention.

[0020] (5) Temperature control systems are low in cost and reliable in operation. Attached Figure Description

[0021] Figure 1 Diagram of a closed-market pressurized water tank heat pump temperature control-driven heat pump power failure antifreeze system.

[0022] Figure 2 Diagram of an open-type atmospheric pressure water tank heat pump temperature control-driven heat pump power failure antifreeze system.

[0023] Figure 3 Diagram of an open-type atmospheric pressure water tank heat pump semi-automatic temperature control-driven heat pump power failure antifreeze system.

[0024] Figure 4 This diagram shows a closed-loop pressurized water tank heat pump temperature control-driven heat pump power failure antifreeze system where the balance temperature sensor has been replaced with a liquid level sensor.

[0025] Figure 5 Diagram of an open-type atmospheric pressure water tank heat pump temperature control-driven heat pump power failure antifreeze system, in which the temperature sensor at the exhaust valve has been replaced with a liquid level sensor.

[0026] In the picture:

[0027] 1. Condition controller 2. Shut-off electric valve

[0028] 3. DC air pump 4. One-way valve

[0029] 5. Air vent valve; 6. Vertical water sealing section

[0030] 7. Drainable water system; 8. Water storage system

[0031] 9. Expansion valve; 10. Internal expansion tank

[0032] 11. Temperature sensor at exhaust valve 12. Balance temperature sensor

[0033] 13. Water tank level sensor 14. Antifreeze temperature sensor

[0034] 15. Circulating pump current sensor

[0035] 20. Water tank 21. Circulating water pump

[0036] 22. Heat pump condenser

[0037] Thick solid lines describe pipelines;

[0038] The dashed line indicates the boundary between indoor and outdoor areas;

[0039] The dotted line indicates the control relationship between the conditional controller and the target device (accessory);

[0040] The double-dotted line indicates that the condition controller collects data from the device. Detailed Implementation

[0041] A temperature-controlled heat pump power-off antifreeze system is constructed by adding a gas-liquid balance mechanism, a gas charging and venting mechanism, and a circuit-breaking electric valve to the traditional heat pump circulating water heating circuit. Its basic flow principle is as follows:

[0042] (1) Pressurized Heating Circulation System. Closed pressurized water tank → circulating water pump → water storage circuit → gas-liquid balance mechanism → drainable water circuit (including heat pump condenser water circuit) → air charging and venting mechanism → circuit breaker electric valve → water storage circuit → heat dissipation zone → closed pressurized water tank. Anti-freeze temperature sensors are installed on the outdoor equipment water circuit. Temperature sensors are installed on the vertical sealing section of the gas-liquid balance mechanism, at the vent valve of the air charging and venting mechanism, and on the water tank. A current sensor is installed on the circulating pump circuit. Valves, filters, flow meters, temperature measuring ports, pressure measuring ports, crossover lines, drain outlets, and insulation facilities can be added to the circulation loop.

[0043] (2) Atmospheric Pressure Water Tank Small Circulation System. Open atmospheric pressure water tank → circulating water pump → water storage circuit → gas-liquid balance mechanism → drainable water circuit (including heat pump condenser water circuit) → air charging and venting mechanism → circuit breaker electric valve → water storage circuit → open atmospheric pressure water tank. Anti-freeze temperature sensors are installed at the outdoor equipment water inlets. Temperature sensors are installed on the vertical sealing section of the gas-liquid balance mechanism, at the vent valve of the air charging and venting mechanism, and on the water tank. A current sensor is installed on the circulating pump circuit. Valves, filters, flow meters, temperature measuring ports, pressure measuring ports, crossover lines, drain outlets, and insulation facilities can be added to the circulation loop.

[0044] Heat pump circulating water heating circuit. The heat pump circulating water heating circuit shall have at least one hot water tank, one circulating water pump, and one heat pump condenser.

[0045] The gas-liquid balance mechanism consists of a vertical sealing section, a balance temperature sensor, an internal expansion tank, and a capacity-expanding electric valve. The balance temperature sensor on the vertical sealing section marks the boundary between the storage water path and the drainable water path. The vertical sealing section, balance temperature sensor, and capacity-expanding electric valve can be integrated into one unit; the internal expansion tank and capacity-expanding electric valve can be integrated into one unit; or all three can be integrated into one unit. In a small-circulation system with an atmospheric pressure water tank, the gas-liquid balance mechanism may not require an internal expansion tank and capacity-expanding electric valve. The balance temperature sensor can be replaced with a balance level sensor if needed.

[0046] Inflation and deflation mechanism. The main components of the inflation and deflation mechanism include a DC air pump, a one-way intake valve, an exhaust valve, and a temperature sensor at the exhaust valve. The exhaust valve can be manual or electric. The DC air pump is equipped with a battery and an AC charger. The DC air pump, one-way intake valve, and exhaust valve can be integrated into one unit.

[0047] Circuit-breaking electric valve. As the dividing point between the water storage circuit and the drainable water circuit, the circuit-breaking electric valve can be installed independently on the pipeline or integrated with the air filling and venting mechanism. Depending on the needs, the temperature sensor at the venting valve can be replaced with a liquid level sensor at the venting valve.

[0048] Condition Controller. The condition controller is DC driven and equipped with a battery and AC charger, controlling the expansion electric valve, DC air pump, and electric exhaust valve. The condition controller offers both manual and automatic control modes. The condition controller detects at least six parameters across four categories: outdoor pipeline temperature, water tank level, equilibrium temperature, exhaust valve temperature, power voltage, and circulating pump current. The condition controller can be integrated with the inflation / exhaust mechanism, or it can be integrated with both the circuit breaker electric valve and the inflation / exhaust mechanism. The battery and AC charger of the condition controller can be combined with those of the DC air pump to power the condition controller, DC air pump, and electric valve.

[0049] When the heat pump circulating water circuit is operating normally, the expansion valve is closed, the internal expansion tank does not receive water, and the condition controller, air charging and venting mechanism, and circuit breaker valve are not working. The power supply is the condition controller battery and the DC air pump battery, which are charged and then stop when fully charged. The water tank level signal is monitored, and an alarm is triggered if the level exceeds the limit. In the event of a power outage, the condition controller starts working. It monitors the outdoor pipe temperature. When the outdoor pipe temperature drops to the antifreeze set value, it controls the flow-stopping valve to activate, blocking the water circuit. The DC air pump starts to inject air into the circulating water circuit. If the air charging continues for a certain period of time and the temperature parameter of the equilibrium temperature sensor does not change significantly, the expansion valve opens, allowing some water to be drained into the internal expansion tank until the equilibrium temperature parameter changes significantly. At this point, the water circuit is completely drained, and the DC air pump stops. When the power supply is restored, if the circulating pump starts running, the condition controller detects current flowing through the circulating pump, and the vent valve automatically opens to release the air from the system. When water entering the internal expansion tank is discharged into the pipeline, and the temperature parameter of the temperature sensor at the vent valve fluctuates, first decreasing and then increasing, it indicates that the air in the water circuit has been completely removed. At this point, the electric vent valve automatically closes, the expansion valve closes again, the flow-stopping valve returns to its original position, the pipeline is unobstructed, and the heat pump circulation heating water circuit restarts and operates normally. The vent valve can also be opened manually.

[0050] When the balance temperature sensor is replaced with a balance liquid level sensor, the start and stop of the DC air pump are controlled by the liquid level signal; when the temperature sensor at the exhaust valve is replaced with a liquid level sensor at the exhaust valve, the start and stop of the DC air pump are controlled by the liquid level signal.

[0051] Without a circulating pump current sensor, the opening of the exhaust valve is limited by the power voltage parameters.

[0052] The present invention will be further described below with reference to specific embodiments.

[0053] Example 1: A closed-loop pressurized water tank temperature-controlled heat pump power-off antifreeze system. For example... Figure 1As shown in the diagram. The water circuit of the heat dissipation area is omitted from the diagram, but this does not affect the description of the overall system function. The closed-loop pressurized water tank heat pump fully automatic power-off antifreeze system is a typical structure. The system is pressurized, and the water tank 20 is a closed pressurized water tank. A water tank level sensor 13 is installed on it to limit the water level. An alarm is triggered if the level is exceeded. A current sensor 15 is installed on the power line of the circulating water pump 21. The gas-liquid balance mechanism consists of a vertical sealing section 6, a balance temperature sensor 12, an internal expansion tank 10, and an expansion electric valve 9. Its air-filling and air-discharging mechanism consists of a DC air pump 3, a one-way air inlet valve 4, an exhaust valve 5, and a temperature sensor 11 at the exhaust valve. The exhaust valve 5 is an electric exhaust valve, which is controlled by a condition controller 1 to open and close. The condition controller 1 establishes a control relationship with the flow-stopping electric valve 2, the exhaust valve 5, the DC air pump 3, and the expansion electric valve 9. The antifreeze temperature sensor 14 is installed at the outdoor condenser outlet of the drainable water circuit 7. When the heat pump circulating water circuit is operating normally, driven by the circulating water pump 21, the expansion electric valve 9 is closed, the inner expansion tank 10 does not receive water, and the condition controller 1, the air charging and venting mechanism, and the circuit breaker electric valve 2 are not working. The power supply is the battery of the condition controller 1 and the DC air pump 3, which charge the battery until fully charged. In the event of a power outage, the condition controller 1 starts working and detects the temperature value of the antifreeze temperature sensor 14. When the temperature value of the antifreeze temperature sensor 14 drops to the antifreeze set value, it controls the flow-breaking electric valve 2 to operate, blocking the water circuit. The DC air pump 3 starts to inject air into the drainable water circuit 7. If the inflation time exceeds a certain period, the expansion electric valve 9 opens, and some water from the drainable water circuit 7 enters the inner expansion tank 10 until the temperature parameter value of the equilibrium temperature sensor 12 first drops and then rises, showing a significant change. At this time, there is no water remaining in the drainable water circuit 7, and the DC air pump 3 stops. Under stable conditions, the temperature sensor 12 on the vertical sealing section 6 becomes the gas-liquid boundary point, preventing water in the water storage channel 8 from entering the drainable water channel 7 through the vertical sealing section 6, thus ensuring that the outdoor water channel will not freeze or even crack. When the power supply is restored, if the condition controller 1 detects a current signal from the current sensor 15 of the circulating water pump 21, it indicates that the circulating pump has started running. At this time, the control exhaust valve 5 is opened to exhaust air from the pipeline, and the water that entered the inner expansion tank 10 flows back into the drainable water channel 7. When the temperature parameter value of the temperature sensor 11 at the exhaust valve first drops and then rises, indicating a significant change, it means that the air has been completely expelled. At this time, the electric exhaust valve 5 is closed, the expansion electric valve 9 is closed again, the flow-stopping electric valve 2 returns to its initial state, and the pipeline is unblocked again. The heat pump circulating heating water channel restarts and operates normally.

[0054] Example 2: Open-type atmospheric pressure water tank temperature-controlled heat pump power failure antifreeze system, such as Figure 2As shown. Water tank 20 is an open, atmospheric pressure water tank, with a water level sensor 13 installed on it to limit the water level; an alarm is triggered if the level is exceeded. The gas-liquid balance mechanism does not have an internal expansion tank or an expansion electric valve; it consists only of a vertical sealing section 6 and a balance temperature sensor 12. Its inflation and deflation mechanism consists of a DC air pump 3, a one-way air inlet valve 4, and an exhaust valve 5, which is a manual valve. Condition controller 1 controls the flow-off electric valve 2 and the DC air pump 3. The antifreeze temperature sensor 14 is installed at the outlet of the outdoor condenser in the drainable water circuit 7. When the heat pump circulating heating water circuit is driven normally by the circulating water pump 21, the condition controller 1, the inflation and deflation mechanism, and the flow-off electric valve 2 are not working. The power supply is the battery of the condition controller 1 and the battery of the DC air pump 3, which charge the battery and stop when fully charged. In the event of a power outage, the condition controller 1 activates, detecting the temperature value of the antifreeze temperature sensor 14. When the outdoor pipeline temperature drops to the antifreeze set value, it controls the flow-stopping electric valve 2 to operate, blocking the water circuit. The DC air pump 3 starts, injecting air into the drainable water circuit 7, allowing water to enter the water tank 20. This continues until the temperature parameter value of the equilibrium temperature sensor 12 first decreases and then increases significantly. At this point, there is no water remaining in the drainable water circuit 7, and the DC air pump 3 stops. Under stable conditions, the equilibrium temperature sensor 12 at the vertical sealing section 6 becomes the gas-liquid boundary point, preventing water in the water storage circuit 8 from entering the drainable water circuit 7 through the vertical sealing section 6, thus ensuring that the outdoor water circuit will not freeze or even crack. When the power supply is restored, if the condition controller 1 detects a current signal from the current sensor 15 of the circulating water pump 21, it indicates that the circulating pump has started running. At this time, the control vent valve 5 is opened to vent air from the pipeline, allowing the water that entered the internal expansion tank 10 to flow back into the drainable water circuit 7. When the temperature parameter value of the temperature sensor 11 at the vent valve first decreases and then increases significantly, it indicates that the air has been completely purged. At this time, the electric vent valve 5 is closed, the flow-stop electric valve 2 returns to its initial state, and the pipeline is unblocked again. The heat pump circulating water circuit restarts and operates normally.

[0055] Example 3: Open-type atmospheric pressure water tank temperature-controlled heat pump semi-automatic power-off antifreeze system, such as... Figure 3 As shown.

[0056] Compared with Example 2, the exhaust valve in Example 3 is manually operated, eliminating the need for a water tank level sensor and a temperature sensor at the exhaust valve. The system and control program are more simplified, hence it is called a "semi-automatic power-off antifreeze system".

[0057] The inflation control process in Example 3 when encountering a power outage is the same as in Example 2. Therefore, it will not be described in detail here.

[0058] When the power supply is restored, manually open the vent valve 5 to release the air from the pipeline. The flow-stop electric valve 2 will then reset, and the pipeline will be unblocked again. The heat pump circulating water heating circuit will restart and operate normally.

[0059] In this system, due to the presence of manual operation, the flow-stopping electric valve 2 can be selected as a 220V "power-on opening, power-off cutting-off" product, which can achieve the purpose of system antifreeze without the need for control by the condition controller 1. This structure does not deviate from the basic framework of automatic DC power supply identification and inflation antifreeze after power failure, and also falls within the scope of the claims of this utility model.

[0060] Example 4: A closed-loop pressurized water tank heat pump temperature control-driven heat pump power failure antifreeze system with the balance temperature sensor replaced by a liquid level sensor, such as... Figure 4 As shown.

[0061] Compared with Example 1, in Example 4, the equilibrium temperature sensor 12 is replaced with an equilibrium liquid level sensor, while everything else remains the same. Here, the condition controller 1 recognizes that the water in the drainable water path has been completely drained by identifying the disconnection of the liquid level sensor signal, and thus instructs the DC air pump 3 to stop charging.

[0062] The working principle of the rest is exactly the same as that of Example 1, and will not be repeated here.

[0063] Example 5: An open-type atmospheric pressure water tank heat pump temperature control-driven heat pump power failure antifreeze system with the temperature sensor at the exhaust valve replaced by a liquid level sensor, such as... Figure 5 As shown.

[0064] Compared with Example 2, in Example 5, the temperature sensor 11 at the exhaust valve is replaced with a liquid level sensor at the exhaust valve, while everything else remains the same. Here, the condition controller 1 recognizes that the air in the venting water path has been completely purged by identifying the liquid level sensor signal, and thus instructs the electric exhaust valve 5 to close, stopping the exhaust.

[0065] The working principle of the rest is exactly the same as that of Example 2, and will not be repeated here.

[0066] The integration methods of different components and the control modes of different identification conditions of the temperature-controlled heat pump power failure antifreeze system, as long as they do not change the system structure and control principle of this utility model, are all within the scope of the claims of this utility model, and will not be elaborated here.

Claims

1. A temperature-controlled heat pump power-off antifreeze system, comprising a condition controller, a circulating pump current sensor, a water tank level sensor, a heat pump circulating heating water circuit, and an antifreeze temperature sensor, an air-filling and air-filling mechanism, an air-liquid balance mechanism, and a flow-stopping electric valve installed on the water circuit, characterized in that: The main components of the inflation and deflation mechanism include a DC air pump, a one-way air inlet valve, a temperature sensor at the air inlet valve, and an exhaust valve; the heat pump circulating heating water circuit has at least one hot water tank, one circulating water pump, and one heat pump condenser; at least one flow-stop electric valve is provided; the control output of the condition controller is connected to the inflation and deflation mechanism, the gas-liquid balance mechanism, and the flow-stop electric valve.

2. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: When the hot water tank is a closed pressurized water tank, the gas-liquid balance mechanism consists of a vertical sealing section, an internal expansion tank, a capacity-increasing electric valve, and a temperature sensor installed on the vertical sealing section; when the hot water tank is an open atmospheric pressure water tank, the gas-liquid balance mechanism may not include an internal expansion tank and a capacity-increasing electric valve.

3. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: The condition controller controls at least the following actions: opening and closing of the flow-stopping electric valve, opening and closing of the electric exhaust valve, opening and closing of the capacity-increasing electric valve, and starting and stopping of the DC charging valve. It is also equipped with a battery and an AC charger, and is permitted to be equipped with a power supply failure alarm and a liquid level over-limit alarm.

4. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: The DC air pump in the inflation and deflation mechanism is equipped with a battery and an AC charger; the deflation valve can be either manual or electric; the electric deflation valve can be equipped with an additional water-blocking mechanism.

5. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: The charger for the condition controller and the charger for the DC air pump are combined into one unit, with their outputs connected to the charging terminals of their respective batteries. The battery for the condition controller and the battery for the DC air pump are combined into one unit, with their battery output lines connected to their respective DC power terminals.

6. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: It allows the inflation / deflation mechanism and condition controller to be integrated into one unit; it allows the inflation / deflation mechanism and shut-off electric valve to be integrated into one unit; it allows the condition controller, inflation / deflation mechanism and shut-off electric valve to be integrated into one unit; it allows the condition controller to be integrated into the heat pump operation controller.

7. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: In the gas-liquid balance mechanism, it is permissible to integrate the internal expansion tank and the capacity-increasing electric valve into one unit; it is also permissible to integrate the vertical sealing water section, temperature sensor, expansion tank, and capacity-increasing electric valve into one unit.

8. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: It is permissible to replace the temperature sensor in the gas-liquid balance mechanism with a liquid level sensor; it is permissible to replace the temperature sensor at the exhaust valve with a liquid level sensor; it is permissible to omit the water tank liquid level sensor; it is permissible to omit the circulating pump current sensor.

9. The temperature-controlled heat pump power-off antifreeze system according to claim 1, characterized in that: When a shut-off electric valve is replaced with a normally closed solenoid valve, it is permissible for it not to be associated with a condition controller.

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