CN217584942U - Low-temperature anti-freezing solar heat pump system - Google Patents
Low-temperature anti-freezing solar heat pump system Download PDFInfo
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- CN217584942U CN217584942U CN202221630760.7U CN202221630760U CN217584942U CN 217584942 U CN217584942 U CN 217584942U CN 202221630760 U CN202221630760 U CN 202221630760U CN 217584942 U CN217584942 U CN 217584942U
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Abstract
The utility model discloses a low-temperature anti-freezing solar heat pump system, which comprises a compressor, a condenser, a liquid storage device, a solar evaporator and a circulating hot water tank; a first circulating pipeline and a second circulating pipeline are arranged between the circulating hot water tank and the condenser, one end of the first circulating pipeline is connected with a circulating water outlet, the other end of the first circulating pipeline is connected with a water inlet of the condenser, one end of the second circulating pipeline is connected with a circulating water inlet, and the other end of the second circulating pipeline is connected with a water outlet of the condenser; an auxiliary heater is arranged at the bottom end of the circulating hot water tank, and a temperature detection probe electrically connected with the auxiliary heater is arranged on the first circulating pipeline; the first circulating pipeline is connected with an anti-freezing pipeline in parallel, the first circulating pipeline is provided with an anti-freezing drain pipe, and the second circulating pipe is provided with an anti-freezing vent pipe. The utility model provides a current heat pump set when the outage under heat energy unit trouble, operation accident or other circumstances, protection system failure prevents frostbite leads to the condemned problem of heat pump set.
Description
Technical Field
The utility model belongs to the technical field of the heat transfer technique and specifically relates to a solar thermal energy pump system prevents frostbite.
Background
The heat pump unit is an integral heat pump type air conditioner capable of performing refrigeration/heating circulation, the condition that the heat pump unit is frozen to cause unit scrapping can occur in the market every winter, and loss and influence on brands caused by the condition are large.
Heat pump set itself in the existing market all has the protection of preventing frostbite, mainly relies on heat pump set itself to prevent frostbite, but winter when unit or circulating water pump break down, the user does not in time discover to solve or when the short time is difficult to restore, prevents frostbite the function and can't go on, and the host computer freezes badly very easily and scraps.
Some heat pump manufacturers adopt double anti-freezing protection by using the unit and auxiliary electric heating aiming at the problem, but when the unit is powered off accidentally or under other conditions, the anti-freezing protection also fails, although the probability of power failure or power failure is lower, risks still exist, and once the unit is frozen out due to power failure, the whole unit is directly scrapped.
Therefore, it is necessary to research and develop a low-temperature anti-freezing solar heat pump system capable of realizing triple anti-freezing, so as to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar heat pump system prevents frostbite at low temperature for when solving current heat pump set outage under heat energy unit trouble, operation accident or other circumstances, the protection system that prevents frostbite became invalid, leads to the condemned problem of heat pump set.
In order to achieve the above object, the utility model provides a pair of solar heat pump system prevents frostbite, specific embodiment is as follows:
a low-temperature anti-freezing solar heat pump system comprises a compressor, a condenser, a liquid storage device, a solar evaporator and a circulating hot water tank, wherein the output end of the compressor is connected with the input end of the condenser;
a first circulating pipeline and a second circulating pipeline are arranged between the circulating hot water tank and the condenser, one end of the first circulating pipeline is connected with a circulating water outlet of the circulating hot water tank, the other end of the first circulating pipeline is connected with a water inlet of the condenser, one end of the second circulating pipeline is connected with a circulating water inlet of the circulating hot water tank, and the other end of the second circulating pipeline is connected with a water outlet of the condenser;
an auxiliary heater is arranged at the bottom end of the circulating hot water tank, and a temperature detection probe electrically connected with the auxiliary heater is arranged on the first circulating pipeline;
the first circulating pipeline is connected with an anti-freezing pipeline in parallel, the first circulating pipeline is provided with an anti-freezing drain pipe, and the second circulating pipe is provided with an anti-freezing vent pipe.
Compared with the prior art, the low-temperature anti-freezing solar heat pump system is normally used, firstly, the condenser and high-temperature high-pressure gas discharged by the compressor are utilized for heat exchange and condensation treatment, the condensed gas flows into the solar evaporator through the liquid storage device to evaporate and absorb solar heat energy, and the condensed gas enters the compressor again after absorbing the solar heat energy; meanwhile, the hot water in the circulating hot water tank enters the condenser through the first circulating pipeline for heat exchange, and the hot water after heat exchange returns to the hot water tank;
primary antifreezing: after the winter comes, the heat pump system is in a standby state, and when the temperature detection probe detects that the temperature of water in the first circulating pipeline is lower than 2 ℃, hot water in the circulating hot water tank is circulated to the first circulating pipeline, the condenser and the second circulating pipeline through the first circulating pipeline to avoid freezing damage of the heat pump system, and meanwhile, when the temperature of water in the circulating hot water tank is lower than a preset value, the heat pump system is started to heat;
and (3) secondary antifreezing: when the heat pump system fails and is difficult to repair in a short time, and the temperature detection probe detects that the temperature of water in the first circulating pipeline is lower than 2 ℃, hot water in the circulating hot water tank is circulated into the first circulating pipeline, the condenser and the second circulating pipeline through the first circulating pipeline (when the first circulating pipeline fails, the anti-freezing pipeline is started), so that the heat pump system is prevented from being frozen, and meanwhile, when the temperature of water in the circulating hot water tank is lower than a preset temperature, the auxiliary heater is started for auxiliary heating;
third-stage antifreezing: when the heat pump system is powered off due to accidents or other reasons, and primary anti-freezing and secondary anti-freezing are both ineffective, the water discharge pipe is started to discharge water in the first circulating pipeline, the condenser and the second circulating pipeline, and gas is introduced to avoid the occurrence of the condition that the heat pump system is frozen. The anti-freezing heat pump unit has the advantages of simple structure, convenience in use and good anti-freezing effect, and effectively solves the problem that the heat pump unit is scrapped due to failure of an anti-freezing protection system when the conventional heat pump unit is powered off under the conditions of failure, accidental operation or other conditions.
Preferably, an outlet control valve for controlling the on-off of the first circulation pipeline and a circulation water pump for delivering the circulation water in the circulation hot water tank into the condenser are arranged at one end of the first circulation pipeline close to the circulation water outlet, and the temperature detection probe is arranged at one end of the first circulation pipeline close to the circulation water outlet and used for monitoring the temperature of the circulation water entering the condenser.
Preferably, an anti-freezing electromagnetic valve and an anti-freezing water pump are arranged on the anti-freezing pipeline, the anti-freezing electromagnetic valve is used for controlling the conduction or the cutoff of the anti-freezing pipeline and the first circulating pipeline, and the anti-freezing water pump is used for conveying circulating water in the circulating hot water tank into the condenser.
Preferably, a water inlet control valve is arranged at one end of the second circulating pipeline close to the circulating water inlet, and is used for controlling the connection or disconnection between the circulating water inlet of the circulating hot water tank and the water outlet of the condenser.
Preferably, a drain control valve is arranged on the anti-freezing drain pipe, and the drain control valve is closed in a power-on state and opened in a power-off state.
Preferably, the drain control valve is arranged at the bottom end of the anti-freezing drain pipe.
Preferably, the anti-freezing vent pipe is provided with a vent control valve, and the vent control valve is closed in a power-on state and opened in a power-off state.
Preferably, the ventilation control valve is arranged at the top end of the anti-freezing ventilation pipe.
Preferably, an electronic expansion valve is arranged between the liquid accumulator and the solar evaporator to control the connection or disconnection of the liquid accumulator and the solar evaporator.
Preferably, the circulation hot water tank is connected with a water inlet pipeline and a water outlet pipeline, the water inlet pipeline is used for injecting the circulation water into the previous circulation hot water tank, and the water outlet pipeline is used for discharging the circulation water out of the circulation hot water tank.
Based on the technical scheme, the utility model discloses for prior art, following beneficial effect has:
1. through setting up the drain control valve in the bottom of the drain pipe that prevents frostbite, utilize the drain control valve circular telegram to close, the setting mode that the outage was opened can make the drain pipe open the water in discharge condenser, first circulating line and the second circulating line immediately when heat pump system cuts off the power supply, avoids heat pump system to freeze the condition emergence of damaging.
2. Through set up the air control valve on the top of breather pipe prevents frostbite, utilize the air control valve circular telegram to close, the setting mode that the outage was opened can make the breather pipe open immediately when heat pump system cuts off the power supply and let in gas in toward condenser, first circulating line and the second circulating line, further avoids the condition of heat pump system frost damage to take place.
3. Through set up electronic expansion valve between reservoir and solar evaporator, can carry out the depressurization with the gas after condenser heat transfer handles.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The utility model discloses a low temperature solar thermal energy pump system that prevents frostbite is explained with the attached drawing.
As shown in fig. 1, the low-temperature anti-freezing solar heat pump system comprises a compressor 1, a condenser 2, a liquid storage device 3, an electronic expansion valve 4 and a solar evaporator 5, wherein an output end of the compressor 1 is connected with an input end of the condenser 2 through a pipeline, an output end of the condenser 2 is connected with an input end of the liquid storage device 3 through a pipeline, an output end of the liquid storage device 3 is connected with an input end of the solar evaporator 5 through a pipeline, an output end of the solar evaporator 5 is connected with an input end of the compressor 1 through a pipeline, and the electronic expansion valve 4 is arranged on a pipeline between the liquid storage device 3 and the solar evaporator 5.
When the solar energy heat exchanger is used, high-temperature and high-pressure gas generated when the compressor 1 operates is conveyed into the condenser 2 to be subjected to heat exchange and temperature reduction treatment, liquid subjected to heat exchange and condensation enters the liquid storage device 3 to be stored and conveyed into the solar evaporator 5, the electronic expansion valve 4 performs pressure reduction treatment on the liquid on the way, and the solar evaporator 5 performs heat absorption and evaporation on the liquid subjected to pressure reduction treatment to form gas to be input into the compressor 1 again.
The water outlet of the condenser 2 is connected with a circulating water inlet of a circulating hot water tank 6 through a second circulating pipeline 17, and a circulating water outlet of the circulating hot water tank 6 is connected with the water inlet of the condenser 2 through a first circulating pipeline 16.
Specifically, the first circulation pipe 16 is provided with a water outlet control valve 11 for controlling the opening and closing of the first circulation pipe 16, and a circulation water pump 7 for supplying water in the circulation hot water tank 6 to the condenser 2.
Further, a temperature detection probe 15 is disposed on the first circulation pipeline 16 for detecting the temperature in the first circulation pipeline 16.
Further, an auxiliary heater 9 is arranged at the bottom end of the circulating hot water tank 6, and the auxiliary heater 9 is electrically connected with the temperature detection probe 15 and used for starting the auxiliary circulating hot water tank 6 to heat when the temperature of the circulating hot water tank 6 conveyed into the first circulating pipeline 16 is lower than a preset value.
Further, an anti-freezing pipe 18 is connected in parallel to the first circulation pipe 16, and an anti-freezing control valve 12 for controlling the connection or disconnection between the anti-freezing pipe 18 and the first circulation pipe 16, and an anti-freezing water pump 8 for delivering water in the circulation hot water tank 6 to the condenser 2 are provided on the anti-freezing pipe 18.
Wherein, an anti-freezing drain pipe 19 is arranged at one end of the first circulation pipe 16 close to the condenser 2, and a drain control valve 13 is arranged at the bottom end of the anti-freezing drain pipe 19 for controlling the conduction or the cut-off of the anti-freezing drain pipe 19 and the first circulation pipe.
Wherein, a water inlet control valve 10 is arranged at one end of the second circulating pipeline 17 close to the circulating water inlet, and is used for controlling the conduction or the cut-off of the second circulating pipeline 17.
Furthermore, an anti-freezing vent pipe 20 is arranged on the second circulation pipeline 17, and a vent control valve 14 is arranged at the top end of the anti-freezing vent pipe 20 to control the conduction or the cutoff of the anti-freezing vent pipe 20 and the second circulation pipeline 17.
Wherein, a water inlet pipe 61 and a water outlet pipe 62 are connected to the hot water circulating tank 6, the water inlet pipe 61 is used for injecting circulating water into the hot water circulating tank 6, and the water outlet pipe 62 is used for discharging the circulating water out of the hot water circulating tank 6.
When the heat pump system is used, the heat pump system is in standby in winter, when the water temperature probe detects that the water temperature in the pipeline is lower than 2 ℃, the circulating water pump 7 is started, hot water in the circulating hot water tank 6 circulates to the first circulating pipeline 16, the second circulating pipeline 17 and the condenser 2 to prevent the heat pump system from being frozen, and when the water temperature in the circulating hot water tank 6 is lower than a set value, the heat pump system is started to heat, so that primary antifreezing is formed;
an auxiliary heater 9 is installed at the bottom end of the circulating hot water tank 6, an anti-freezing pipeline 18 is connected in parallel with the first circulating pipeline 16, the anti-freezing pipeline 18 is provided with an anti-freezing control valve 12 and an anti-freezing water pump 8, the anti-freezing control valve 12 is a normally closed valve and is opened when the anti-freezing control valve is electrified; when the host is failed in winter and is difficult to recover in a short time, when the temperature detection probe 15 detects that the temperature of water in the first circulating pipeline 16 is lower than 2 ℃, the circulating water pump 7 is started (when the circulating water pump 7 fails, the anti-freezing control valve 12 is electrified and opened, the anti-freezing water pump 8 is started to circulate), hot water in the circulating hot water tank 6 is circulated into the first circulating pipeline 16, the second circulating pipeline 17 and the condenser 2 to prevent the heat pump system from being frozen, and when the temperature of water in the circulating hot water tank 6 is lower than a set value, the auxiliary heater 9 is started to heat, so that secondary anti-freezing is formed;
an outlet control valve 11 is arranged at a circulating water outlet of the circulating hot water tank 6, and an inlet control valve 10 is arranged at a circulating water inlet of the circulating hot water tank; an anti-freezing drain pipe 19 is led out between the circulating water pump 7 and the water inlet of the condenser 2, a drain control valve 13 is arranged on the anti-freezing drain pipe 19, and the drain control valve 13 is arranged at the lowest point of the anti-freezing drain pipe 19; an anti-freezing vent pipe 20 is led out between the water outlet of the condenser 2 and the water inlet control valve 10, a vent control valve 14 is arranged on the anti-freezing vent pipe 20, and the vent control valve 14 is arranged at the highest point of the anti-freezing vent pipe 20; under normal conditions, the water inlet control valve 10 and the water outlet control valve 11 are kept in an electrified open state, and the water discharge control valve 13 and the aeration control valve 14 are kept in an electrified closed state; in winter, when the heat pump system is powered off due to accidents or other reasons, the water inlet control valve 10 and the water outlet control valve 11 are powered off and closed, the water discharge control valve 13 and the ventilation control valve 14 are powered off and opened, water in the first circulating pipeline 16, the second circulating pipeline 17 and the condenser 2 is discharged, and gas is introduced to prevent the heat pump system from being frozen, so that three-stage anti-freezing is formed;
the drain control valve 13 and the aeration control valve 14 described in this embodiment are solenoid valves that are closed in an energized state and opened in a de-energized state.
The water outlet control valve 11, the water inlet control valve 10, the anti-freezing control valve 12 and the electronic expansion valve 4 according to the present embodiment are solenoid valves that are opened in an energized state and closed in a de-energized state.
The utility model discloses a solar heat pump system prevents frostbite can avoid leading to heat pump system to freeze because of heat pump system's host computer or water pump break down under the low temperature state winter, also can avoid leading to heat pump system to freeze because of accident or other reasons outage, and the system is comprehensive, multiple functional, has thoroughly stopped the possibility that the unit was frozen out when low temperature, simple structure, simple to operate, with low costs, easily realization. The heat pump unit effectively solves the problem that the heat pump unit is scrapped due to the failure of an anti-freezing protection system when the conventional heat pump unit is powered off under the conditions of failure, accidental operation or other conditions.
Variations and modifications to the above-described embodiments may occur to those skilled in the art based upon the disclosure and teachings of the above specification. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The low-temperature anti-freezing solar heat pump system is characterized by comprising a compressor, a condenser, a liquid storage device, a solar evaporator and a circulating hot water tank, wherein the output end of the compressor is connected with the input end of the condenser;
a first circulating pipeline and a second circulating pipeline are arranged between the circulating hot water tank and the condenser, one end of the first circulating pipeline is connected with a circulating water outlet of the circulating hot water tank, the other end of the first circulating pipeline is connected with a water inlet of the condenser, one end of the second circulating pipeline is connected with a circulating water inlet of the circulating hot water tank, and the other end of the second circulating pipeline is connected with a water outlet of the condenser;
an auxiliary heater is arranged at the bottom end of the circulating hot water tank, and a temperature detection probe electrically connected with the auxiliary heater is arranged on the first circulating pipeline;
the first circulating pipeline is connected with an anti-freezing pipeline in parallel, the first circulating pipeline is provided with an anti-freezing drain pipe, and the second circulating pipe is provided with an anti-freezing vent pipe.
2. The solar thermal pump system according to claim 1, wherein an outlet control valve for controlling the opening and closing of the first circulation pipe and a circulation water pump for supplying the circulation water in the hot water circulation tank to the condenser are provided at an end of the first circulation pipe adjacent to the circulation water outlet, and the temperature detection probe is provided at an end of the first circulation pipe adjacent to the circulation water outlet for monitoring the temperature of the circulation water entering the condenser.
3. The solar low-temperature antifreezing heat pump system as defined in claim 2, wherein an antifreezing solenoid valve and an antifreezing water pump are disposed on the antifreezing pipeline, the antifreezing solenoid valve is used for controlling the connection or disconnection between the antifreezing pipeline and the first circulating pipeline, and the antifreezing water pump is used for conveying the circulating water in the circulating hot water tank to the condenser.
4. The solar heat pump system as claimed in any one of claims 1 to 3, wherein a water inlet control valve is disposed at an end of the second circulation pipe close to the circulating water inlet to control the connection or disconnection between the circulating water inlet of the circulating hot water tank and the water outlet of the condenser.
5. The cryogenic antifreeze solar heat pump system of any of claims 1 to 3, wherein a drain control valve is provided on the antifreeze drain pipe, the drain control valve being closed in an energized state and open in a de-energized state.
6. The cryoprecipitable solar thermal pump system of claim 5, wherein the drain control valve is disposed at a bottom end of the antifreeze drain pipe.
7. The cryoprecipitable solar heat pump system of any one of claims 1-3, wherein a vent control valve is provided on the antifreeze vent pipe, the vent control valve being closed in a powered-on state and open in a powered-off state.
8. The cryoprecipitable solar heat pump system of claim 7, wherein the vent control valve is disposed at a top end of the antifreeze vent pipe.
9. The solar cryoprecipitate heat pump system as claimed in any one of claims 1-3, wherein an electronic expansion valve is disposed between the accumulator and the solar evaporator to control the connection or disconnection between the accumulator and the solar evaporator.
10. The solar heat pump system as claimed in any one of claims 1 to 3, wherein a water inlet pipe for injecting circulating water into the circulating hot water tank and a water outlet pipe for discharging the circulating water out of the circulating hot water tank are connected to the circulating hot water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630760.7U CN217584942U (en) | 2022-06-27 | 2022-06-27 | Low-temperature anti-freezing solar heat pump system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221630760.7U CN217584942U (en) | 2022-06-27 | 2022-06-27 | Low-temperature anti-freezing solar heat pump system |
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| Publication Number | Publication Date |
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| CN217584942U true CN217584942U (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221630760.7U Active CN217584942U (en) | 2022-06-27 | 2022-06-27 | Low-temperature anti-freezing solar heat pump system |
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| CN (1) | CN217584942U (en) |
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- 2022-06-27 CN CN202221630760.7U patent/CN217584942U/en active Active
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