Heat pump unit for preventing water system from being damaged by freezing in power failure through thermoelectric power generation
By using a thermoelectric generator and a lithium battery-driven mechanical temperature controller, the problem of heat pump units freezing during power outages has been solved, achieving anti-freeze protection in the absence of external power.
Patent Information
- Application Number
- CN202422676244.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-04
AI Technical Summary
In the event of a power outage, the water in the piping system of a heat pump unit freezes in the low-temperature environment, causing damage to the pipes and heat exchangers.
The system combines a thermoelectric generator and a lithium battery with a mechanical passive temperature controller. The thermoelectric generator produces electricity at the high and low temperature ends of the compressor, which drives the solenoid valve and temperature controller to drain water, thus preventing the pipes from freezing.
In the absence of external power, it effectively prevents the heat pump unit from freezing and damage. The lithium battery has good energy storage performance, and the mechanical controller can drain water without power, protecting the system from freezing damage.
Smart Images
Figure CN223580277U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to heat pump unit technical field, concretely relates to a heat pump unit of preventing freezing water system of power failure by utilizing thermoelectricity. BACKGROUND
[0002] If the heat pump unit pipeline system's water is not cleaned up by manual in the process of running, the water in the pipeline system will freeze into ice after the ambient temperature is below 0 degrees, and the water in the pipeline and the water in the heat exchanger will form ice expansion, which will cause the pipeline ice cracking and ice expansion, and damage the pipeline and the water heat exchanger. Therefore, it is urgent to design a heat pump unit of preventing freezing water system of power failure by utilizing thermoelectricity. SUMMARY
[0003] The utility model mainly aims at providing a heat pump unit of preventing freezing water system of power failure by utilizing thermoelectricity to overcome the problems in the prior art.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme:
[0005] A heat pump unit of preventing freezing water system of power failure by utilizing thermoelectricity, comprising heat pump host, thermoelectricity piece, lithium battery and mechanical passive temperature controller, the top of heat pump host is installed with axial flow fan, the lower part of heat pump host is installed with compressor, the exhaust pipe mouth welding piece of compressor and the surface of compressor high pressure cavity cylinder are all fixedly connected with the high temperature end of thermoelectricity piece, the back gas pipe mouth welding piece of compressor and the surface of compressor low pressure cavity cylinder are all fixedly connected with the low temperature end of thermoelectricity piece, the power generation output end of thermoelectricity piece is connected with lithium battery, the voltage output end of lithium battery is connected with direct alternating current inverter, the voltage output A end of direct alternating current inverter is connected with alternating current electromagnetic valve, the voltage output B end of direct alternating current inverter is connected on mechanical passive temperature controller.
[0006] Further, the temperature sensor probe of the mechanical passive temperature controller is connected on the water inlet pipe of the tube heat exchanger, the water inlet pipe of the tube heat exchanger is sequentially provided with alternating current electromagnetic valve, direct heating valve and check valve from the outside to the inside.
[0007] Further, the inlet end of the check valve is connected on the regulating valve waterway end of the condenser.
[0008] Further, the back gas pipe of the main circuit of the compressor is connected with the outlet pipe of the vapor-liquid separator.
[0009] Compared with the prior art, the utility model has the following beneficial effects:
[0010] The temperature difference power generation is used to prevent the water system heat pump unit from being frozen due to power failure, and the unit can be protected from being frozen without additional power supply; the lithium battery has good storage effect, and can prevent the heat pump unit from being frozen in winter even in a long-time water storage state; and the mechanical passive temperature controller does not need power supply and can drain water as long as the temperature reaches. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a whole structure schematic view of the utility model.
[0012] Figure 2 It is a side view of the utility model.
[0013] Figure 3 It is a top view of the utility model.
[0014] Figure 4 It is a partial structure schematic view of the utility model.
[0015] Figure 5 It is a schematic view of the fluorine road system of the utility model.
[0016] 1-axial flow fan, 2-compressor, 3-vapor-liquid separator, 4-liquid tank, 5-casing heat exchanger, 6-finned evaporator, 7-temperature difference power generation sheet, 8-lithium battery, 9-direct alternating current inverter, 10-mechanical passive temperature controller, 11-alternating current electromagnetic valve, 12-direct current normally open electromagnetic valve, 13-check valve, 14-direct heating valve, 16-heat pump host, 17-four-way valve, 18-one-way valve, 19-economizer, 20-high pressure gauge, 21-pressure controller, 22-filter, 23-needle valve, 24-enthalpy increasing electromagnetic valve, 25-enthalpy increasing capillary, 26-photovoltaic panel, 27-electronic expansion valve, 28-stop valve, 29-shunt head assembly, 30-pressure controller, 31-gas collecting pipe assembly, 32-exhaust probe, 33-enthalpy increasing out probe, 34-enthalpy increasing in probe, 35-refrigeration electromagnetic valve, 36-return air probe, 37-evaporation probe. DETAILED DESCRIPTION
[0017] The technical scheme of the utility model is further described below by means of the drawings and examples.
[0018] In combination Figures 1 to 5The embodiment provides a heat pump unit for preventing water system from freezing due to power failure by utilizing thermoelectric power generation, which comprises a heat pump host 16, a thermoelectric power generation sheet 7, a lithium battery 8 and a mechanical passive temperature controller 10, an axial flow fan 1 is installed on the top of the heat pump host 16, a compressor 2 is installed on the lower part of the heat pump host 16, the exhaust pipe orifice welding sheet of the compressor 2 and the surface of the high-pressure cavity cylinder body are fixedly connected with the high-temperature end of the thermoelectric power generation sheet 7, the back gas pipe orifice welding sheet of the compressor 2 and the surface of the low-pressure cavity cylinder body are fixedly connected with the low-temperature end of the thermoelectric power generation sheet 7, the power generation output end of the thermoelectric power generation sheet 7 is connected with the lithium battery 8, a direct-AC inverter 9 is connected to the voltage output end of the lithium battery 8, an AC electromagnetic valve 11 is connected to the voltage output A end of the direct-AC inverter 9, and the voltage output B end of the direct-AC inverter 9 is connected to the mechanical passive temperature controller 10.
[0019] In the embodiment, the temperature sensor probe of the mechanical passive temperature controller 10 is connected to the water inlet pipe of the tube heat exchanger 5, and the AC electromagnetic valve, the direct heating valve 14 and the check valve 13 are sequentially arranged from the outside to the inside of the water inlet pipe of the tube heat exchanger 5.
[0020] In the embodiment, the direct-current normally open electromagnetic valve 12 is arranged on the water outlet pipe of the tube heat exchanger 5.
[0021] In the embodiment, the inlet end of the check valve is connected to the water route end of the adjusting valve of the condenser.
[0022] In the embodiment, the back gas pipe of the main circuit of the compressor 2 is connected with the outlet pipe of the vapor-liquid separator 3.
[0023] In the embodiment, the finned evaporator 6 is arranged on the shell of the heat pump host 16.
[0024] In the prior art, the thermoelectric power generator utilizes the Seebeck effect to directly convert heat energy into electric energy. A p-type thermoelectric element and an n-type thermoelectric element are connected by a metal conductor electrode at the hot end, and cold end electrodes are respectively connected at the cold end, so as to form a thermoelectric single body or single pair. If a hot flow is input to the hot surface of the thermoelectric single body, a temperature difference is established between the hot end and the cold end of the thermoelectric single body, and then the current flows through the circuit, the load obtains the electric power I2RL, and the power generator for directly converting heat energy into electric energy is obtained.
[0025] The heat pump unit provided by the embodiment prevents the water system from being frozen by power failure by using thermoelectric power generation. The heat source end of the thermoelectric power generation sheet 7 is connected to the high-pressure cavity of the compressor 2. The high-pressure cavity is in a long-term heating state when the compressor 2 is started and operated, and can provide sufficient heat. The cold source end of the thermoelectric power generation sheet 7 is connected to the increased and connected circuit of the return pipe of the compressor 2. When the compressor 2 is operated, the cold source end is also in a long-term low-temperature state, and can meet the cold source requirement of the thermoelectric power generator. The cold source and the heat source can be long-term satisfied, and the purpose of power generation is achieved. The lithium battery 8 is used for storage. When the power is cut off, the lithium battery 8 is discharged, so that the water is drained, and the problem of damage of the pipeline and the heat exchanger is avoided.
[0026] By using the scheme, the heat pump unit of the water system is prevented from being frozen by power failure by using thermoelectric power generation. The lithium battery 8 has a very good storage effect. Even if the heat pump unit is in a long-time water storage state, the heat pump unit does not need to worry about being frozen in winter. The mechanical passive temperature controller 10 does not need power supply. As long as the temperature reaches, the water can be drained. The normally open direct current electromagnetic valve is in a drainage state when no power is supplied, so that the system is in a water-free state. The thermoelectric power generation sheet 7, the lithium battery 8, the mechanical passive temperature controller 10, the direct current normally open electromagnetic valve 12 and the heat pump host 16 are combined into a water system with a thermoelectric power generation function and a freeze-proof function, so that the effect of preventing freezing after power failure in winter is achieved.
[0027] In another embodiment, a fluorine system is further included.
[0028] The fluorine system is described as follows: low-temperature air supplement and enthalpy increase working principle: the running process of the designed system is as follows: the high-temperature and high-pressure refrigerant gas discharged by the compressor 2 flows through the jacketed heat exchanger 5 to transfer heat to the heat carrier medium and becomes liquid. The high-pressure refrigerant liquid flowing out of the jacketed heat exchanger 5 flows through the one-way valve 18 to flow through the liquid tank 4. The needle valve 23 is arranged on the liquid tank 4 for vacuumizing. Then the liquid passes through the filter 22 and directly enters the economizer 19 to be divided into two paths: the refrigerant liquid of the auxiliary path passes through the enthalpy increase electromagnetic valve 24 and the enthalpy increase capillary 25 to be throttled and decompressed to become a gas-liquid mixture, and then enters the economizer 19. The two produce heat exchange in the economizer. The refrigerant liquid of the auxiliary path is heated to become a gas and is sucked into the auxiliary suction port of the compressor 2. The refrigerant of the main path is cooled to become a supercooled liquid, throttled and decompressed by the electronic expansion valve 27, and then enters the photovoltaic panel 26 and the evaporator 6. In the photovoltaic panel 26 and the evaporator 6, the refrigerant of the main path absorbs heat in the low-temperature environment to become a low-pressure gas and is sucked into the suction port of the compressor 2. The refrigerants of the main path and the auxiliary path are mixed in the working cavity of the compressor, are further compressed, and are discharged to form a closed working cycle circuit. The air supplement and enthalpy increase can improve the heating capacity of the unit and avoid that the exhaust temperature is too high in a low-temperature environment.
[0029] The outlet fluorine pipe interface of the double-pipe heat exchanger 5 is connected to the inlet fluorine pipe of the one-way valve 18 and the outlet fluorine pipe B of another one-way valve, and a probe clamp mounting condenser outlet probe is welded on the pipe. The pipe A of the one-way valve 18 is connected to the inlet fluorine pipe of the liquid storage tank 4, the outlet pipe of the photovoltaic panel 26 is connected to the D inlet pipe of the one-way valve 18, and the C outlet pipe of the one-way valve 18 is connected to the inlet pipe of the evaporator shunt head assembly 29.
[0030] The high-pressure gauge 21 is arranged on the fluorine pipe at the exhaust port of the system compressor, and is used for monitoring the pressure value of the fluorine system. The pressure value corresponding to each temperature point can be observed to determine whether it is within the normal range. The pressure controller 22 is arranged on the fluorine pipe at the exhaust port of the system compressor, and is used for controlling the pressure value to be within the protection range, so as to protect the compressor from being damaged due to excessively high pressure.
[0031] The stop valve 28 can be directly closed when the capillary is not used, or can be closed to replace the capillary when the capillary in the stop valve needs to be replaced. The capillary may need to be adjusted on site because it may be used at different ambient temperatures. The shunt head assembly 29 is used to uniformly distribute the refrigerant flow entering the evaporator and to make the length of the pipe meet the standard requirements. The pressure controller 30 is arranged on the fluorine pipe at the return air inlet of the system compressor, and is used for controlling the pressure value to be within the protection range, so as to protect the compressor from being damaged due to excessively low pressure. The gas collecting pipe assembly 31 is used in conjunction with the shunt head assembly 29 to collect the refrigerant after the evaporation. The exhaust probe 32 is a temperature protection probe arranged to protect the outlet temperature of the compressor. When the resistance of the exhaust probe decreases with the increase of the temperature, and the temperature transmitted to the electric control after the resistance of the exhaust probe decreases exceeds the set value of the electric control protection, the electric control stops to protect the compressor from being damaged. The enthalpy increase outlet temperature probe 33 is used to adjust the opening of the auxiliary electronic expansion valve. When the enthalpy increase outlet temperature and the enthalpy increase inlet temperature form supercooling or overheating, the opening of the auxiliary electronic expansion valve is adjusted to be larger or smaller. The enthalpy increase inlet temperature probe 34 is used to adjust the opening of the auxiliary electronic expansion valve. When the enthalpy increase inlet temperature and the enthalpy increase outlet temperature form supercooling or overheating, the opening of the auxiliary electronic expansion valve is adjusted to be larger or smaller. The refrigeration electromagnetic valve 35 is used to open the fluorine flow of the return circuit together with the main electronic expansion valve when the machine is converted into refrigeration, so as to reduce the fluorine flow of the main electronic expansion valve due to the smaller main valve selected in the heating mode, and increase the fluorine flow in the refrigeration mode.
[0032] The return air temperature probe 36 is used to adjust the flow of the main return circuit electronic expansion valve together with the evaporation temperature probe 37. The evaporation temperature probe 37 is used to adjust the flow of the main return circuit electronic expansion valve together with the return air temperature probe 36.
[0033] The above merely describes preferred embodiments of the present application, and is not intended to limit the technical scope of the present application in any way. Any minor modification, equivalent change, and modification made according to the technical essence of the present application to the above embodiments still falls within the technical scope of the present application.
Claims
1. A heat pump unit that utilizes thermoelectric power generation to prevent power outages from freezing and damaging water systems, characterized in that, The application relates to a heat pump main machine, a thermoelectric power generation sheet, a lithium battery and a mechanical passive temperature controller, wherein an axial flow fan is arranged on the top of the heat pump main machine, a compressor is arranged on the lower part of the heat pump main machine, the exhaust pipe orifice welding sheet of the compressor and the surface of the high-pressure cavity cylinder body of the compressor are fixedly connected with the high-temperature end of the thermoelectric power generation sheet, the back gas pipe orifice welding sheet of the compressor and the surface of the high-pressure cavity cylinder body of the compressor are fixedly connected with the low-temperature end of the thermoelectric power generation sheet, the power generation output end of the thermoelectric power generation sheet is connected with the lithium battery, the voltage output end of the lithium battery is connected with a direct-AC inverter, the voltage output A end of the direct-AC inverter is connected with an AC electromagnetic valve, and the voltage output B end of the direct-AC inverter is connected with the mechanical passive temperature controller.
2. The heat pump unit for preventing water system from freezing due to power failure by using thermoelectric power generation according to claim 1, wherein The temperature sensor probe of the mechanical passive temperature controller is connected with the water inlet pipe of a jacketed heat exchanger, and an AC electromagnetic valve, a direct heating valve and a check valve are sequentially arranged on the water inlet pipe of the jacketed heat exchanger from the outside to the inside.
3. The heat pump unit for preventing water system from freezing up by power cut according to claim 2, wherein, The inlet end of the check valve is connected with the water road end of the adjusting valve of a condenser.
4. The heat pump unit for preventing water system from freezing up by power cut according to claim 1, wherein, The back gas pipe of the main loop of the compressor is connected with the outlet pipe of a vapor-liquid separator.