CN215909460U - Direct expansion type heat pump hot water system based on PVT - Google Patents
Direct expansion type heat pump hot water system based on PVT Download PDFInfo
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- CN215909460U CN215909460U CN202121778802.7U CN202121778802U CN215909460U CN 215909460 U CN215909460 U CN 215909460U CN 202121778802 U CN202121778802 U CN 202121778802U CN 215909460 U CN215909460 U CN 215909460U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/60—Thermal-PV hybrids
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Abstract
The utility model discloses a PVT-based direct expansion type heat pump hot water system, which comprises a PVT photoelectric hot plate, an inverter, a direct expansion heat pump, a controller and a water tank, wherein the PVT photoelectric hot plate is arranged on the water tank; the direct expansion heat pump comprises a compressor, an expansion valve and a liquid tank; the bottom of the inner side of the water tank is provided with a coil pipe and a water inlet of the water tank, the middle of the inner side of the water tank is provided with a temperature sensor, the inner side of the water tank is provided with an electric heating rod, and the top of the inner side of the water tank is provided with a water outlet of the water tank; the PVT photoelectric photo-thermal plate is heated and combined with the electric heating rod, water temperature in the water tank is sensed in real time through the temperature sensor, and when the PVT photoelectric photo-thermal plate does not have heat in rainy days, the electric heating rod in the water tank works to heat water in the water tank to prepare hot water. The use comfort of the user is improved.
Description
Technical Field
The utility model relates to the technical field of water supply, in particular to a direct expansion type heat pump hot water system based on PVT.
Background
The direct-expansion solar heat pump hot water system combines the solar heat collection and heat pump principle, does not need additional auxiliary energy, ensures the heat supply efficiency, is more energy-saving and environment-friendly than fossil fuel and electricity prepared hot water, and is suitable for high-rise balconies, roofs, air conditioner sealing plates and other positions with high safety requirements.
However, when the existing direct-expansion solar heat pump hot water system is in rainy days and the PVT photoelectric photo-thermal plate does not have heat, water in the water tank cannot be heated, and the use experience of a user is greatly influenced.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model provides a PVT-based direct-expansion heat pump hot water system, which combines heating of a PVT photoelectric photo-thermal plate and heating of an electric heating rod, senses the water temperature in a water tank in real time through a temperature sensor, and when the PVT photoelectric photo-thermal plate does not have heat in rainy days, the electric heating rod in the water tank works to heat the water in the water tank to prepare hot water. The use comfort of the user is improved.
The technical scheme of the utility model is as follows: the direct expansion type heat pump hot water system based on PVT comprises a PVT photoelectric hot plate, an inverter, a direct expansion heat pump, a controller and a water tank;
the direct expansion heat pump comprises a compressor, an expansion valve and a liquid tank;
the bottom of the inner side of the water tank is provided with a coil pipe and a water inlet of the water tank, the middle of the inner side of the water tank is provided with a temperature sensor, the inner side of the water tank is provided with an electric heating rod, and the top of the inner side of the water tank is provided with a water outlet of the water tank;
the photovoltaic wiring seat of the PVT photoelectric hot plate is connected with the input end of an inverter, and the output end of the inverter is connected with a power supply connector of the direct expansion heat pump;
the PVT outlet pipeline of the PVT photoelectric hot plate is connected with the inlet of a compressor, the outlet pipeline of the compressor is connected with the outlet pipeline of a coil pipe inlet and the inlet of a liquid tank, the outlet pipeline of the liquid tank is connected with the inlet of an expansion valve, and the outlet pipeline of the expansion valve is connected with the PVT inlet of the PVT photoelectric hot plate;
and the signal wire of the controller is connected with the direct expansion heat pump, the temperature sensor and the electric heating rod.
Furthermore, the electric heating rods are multiple and are uniformly arranged between the water tank water inlet and the water tank water outlet on the inner side of the water tank. In rainy days, when the PVT photoelectric photo-thermal plate has no heat, the electric heating rod in the water tank works to heat water in the water tank to prepare hot water. The plurality of uniformly arranged electric heating rods can heat water in the water tank faster and more stably. The safety and stability of the device work are ensured.
Further, be provided with water inlet automatic switch valve on the water inlet pipeline of water tank water inlet, the inboard top of water tank is provided with level sensor, level sensor's signal output part is connected to the signal input part of controller, and the signal output part of controller is connected to the signal input part of water inlet automatic switch valve. When the liquid level sensor in the water tank detects that the liquid level of the water tank reaches the maximum liquid level, the controller controls the automatic switch valve of the water inlet to close water inlet.
Furthermore, a pressure gauge and a thermometer are arranged on a connecting pipeline between the expansion valve and a PVT inlet of the PVT photoelectric hot plate. The pressure and the temperature on the pipeline can be detected in real time, the circulating refrigerant is throttled and depressurized through the expansion valve, and the flow of the refrigerant entering the PVT photoelectric photo-thermal plate is adjusted.
The utility model has the beneficial effects that: the direct-expansion heat pump hot water system based on PVT is characterized in that heating of a PVT photoelectric photo-thermal plate is combined with heating of an electric heating rod, water temperature in a water tank is sensed in real time through a temperature sensor, the electric heating rod in the water tank works when the PVT photoelectric photo-thermal plate does not have heat in rainy days, and hot water is prepared by heating water in the water tank. The use comfort of the user is improved.
Drawings
Fig. 1 is a connection schematic diagram of a PVT-based direct expansion heat pump hot water system;
fig. 2 is a connection schematic diagram of a PVT-based direct expansion heat pump hot water system with a liquid level detection device.
In the figure: the device comprises a PVT photoelectric hot plate 1, a PVT inlet 2, a PVT outlet 3, an inverter 4, a direct expansion heat pump 5, a compressor 6, an expansion valve 7, a liquid tank 8, a controller 9, a water tank 10, a coil pipe 11, a coil pipe outlet 12, a temperature sensor 13, an electric heating rod 14, a water tank water inlet 15, a water tank water outlet 16, a water inlet automatic switch valve 17, a liquid level sensor 18 and a coil pipe inlet 19.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The direct expansion type solar heat pump hot water system is a system which utilizes electrically driven vapor compression heat pump circulation and takes a PVT photoelectric photo-thermal plate as an evaporator and can transfer solar radiation heat energy and air heat energy to heated water to prepare hot water.
The water tank is used as a condenser of the direct expansion type solar heat pump hot water system, is used for collecting solar heat energy and storing hot water, and directly supplies hot water to users.
As shown in fig. 1, the PVT-based direct-expansion heat pump hot water system includes a PVT photoelectric hot plate 1, an inverter 4, a direct-expansion heat pump 5, a controller 9 and a water tank 10. The direct expansion heat pump 5 comprises a compressor 6, an expansion valve 7 and a liquid tank 8. The bottom of the inner side of the water tank 10 is provided with a coil pipe 11 and a water tank water inlet 15, the middle of the inner side of the water tank 10 is provided with a temperature sensor 13, the inner side of the water tank 10 is provided with an electric heating rod 14, and the top of the inner side of the water tank 10 is provided with a water tank water outlet 16. The photovoltaic wiring seat of the PVT photoelectric hot plate 1 is connected with the input end of an inverter 4, and the output end of the inverter 4 is connected with a power supply connector of a direct expansion heat pump 5. The PVT outlet 3 of the PVT photoelectric hot plate 1 is connected with the inlet of a compressor 6 through a pipeline, the outlet of the compressor 6 is connected with a coil inlet 19 through a pipeline, the outlet 12 of the coil is connected with the inlet of a liquid tank 8 through a pipeline, the outlet of the liquid tank 8 is connected with the inlet of an expansion valve 7 through a pipeline, and the outlet of the expansion valve 7 is connected with the PVT inlet 2 of the PVT photoelectric hot plate 1 through a pipeline. The signal wire of the controller 9 is connected with the direct expansion heat pump 5, the temperature sensor 13 and the electric heating rod 14.
The direct-expansion heat pump exchanges heat with the PVT photoelectric photo-thermal plate through the compressor, the exchanged heat is conducted to the water tank through a coil pipe in the water tank, and water in the water tank is heated to prepare hot water. On the other hand, the PVT photoelectric photo-thermal plate generates electricity under the irradiation of solar energy, and the generated electric energy is supplied to the direct-expansion heat pump through the inverter.
The PVT photoelectric photo-thermal plate is heated and combined with the electric heating rod, water temperature in the water tank is sensed in real time through the temperature sensor, and when the PVT photoelectric photo-thermal plate does not have heat in rainy days, the electric heating rod in the water tank works to heat water in the water tank to prepare hot water. The use comfort of the user is improved.
Preferably, the plurality of electric heating rods 14 are uniformly arranged between the water tank inlet 15 and the water tank outlet 16 on the inner side of the water tank 10. The plurality of uniformly arranged electric heating rods can heat water in the water tank faster and more stably. The safety and stability of the device work are ensured.
And a pressure gauge and a thermometer are arranged on a connecting pipeline between the expansion valve 7 and the PVT inlet 2 of the PVT photoelectric hot plate 1. The pressure and the temperature on the pipeline can be detected in real time, the circulating refrigerant is throttled and depressurized through the expansion valve, and the flow of the refrigerant entering the PVT photoelectric photo-thermal plate is adjusted.
As shown in fig. 2, a water inlet automatic switch valve 17 is arranged on a water inlet pipeline of the water tank water inlet 15, a liquid level sensor 18 is arranged at the top of the inner side of the water tank 10, a signal output end of the liquid level sensor 18 is connected to a signal input end of the controller 9, and a signal output end of the controller 9 is connected to a signal input end of the water inlet automatic switch valve 17. When the liquid level sensor in the water tank detects that the liquid level of the water tank reaches the maximum liquid level, the controller controls the automatic switch valve of the water inlet to close water inlet.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. PVT-based direct expansion type heat pump hot water system is characterized in that: the device comprises a PVT photoelectric hot plate (1), an inverter (4), a direct expansion heat pump (5), a controller (9) and a water tank (10);
the direct expansion heat pump (5) comprises a compressor (6), an expansion valve (7) and a liquid tank (8);
a coil pipe (11) and a water tank water inlet (15) are arranged at the bottom of the inner side of the water tank (10), a temperature sensor (13) is arranged in the middle of the inner side of the water tank (10), an electric heating rod (14) is arranged at the inner side of the water tank (10), and a water tank water outlet (16) is arranged at the top of the inner side of the water tank (10);
the photovoltaic wiring seat of the PVT photoelectric hot plate (1) is connected with the input end of an inverter (4), and the output end of the inverter (4) is connected with a power supply joint of a direct expansion heat pump (5);
a PVT outlet (3) of the PVT photoelectric hot plate (1) is connected with an inlet of a compressor (6) through a pipeline, an outlet of the compressor (6) is connected with an inlet of a coil (19) through a pipeline, a coil outlet (12) of the compressor is connected with an inlet of a liquid tank (8) through a pipeline, an outlet of the liquid tank (8) is connected with an inlet of an expansion valve (7) through a pipeline, and an outlet of the expansion valve (7) is connected with a PVT inlet (2) of the PVT photoelectric hot plate (1) through a pipeline;
and the signal wire of the controller (9) is connected with the direct expansion heat pump (5), the temperature sensor (13) and the electric heating rod (14).
2. The PVT-based direct expansion heat pump hot water system of claim 1, wherein: the electric heating rods (14) are arranged between the water tank water inlet (15) and the water tank water outlet (16) on the inner side of the water tank (10).
3. The PVT-based direct expansion heat pump hot water system of claim 1, wherein: be provided with water inlet automatic switch valve (17) on the water inlet pipeline of water tank water inlet (15), water tank (10) inboard top is provided with level sensor (18), the signal output part of level sensor (18) is connected to the signal input part of controller (9), and the signal output part of controller (9) is connected to the signal input part of water inlet automatic switch valve (17).
4. The PVT-based direct expansion heat pump hot water system of claim 1, wherein: and a pressure gauge and a thermometer are arranged on a connecting pipeline between the expansion valve (7) and the PVT inlet (2) of the PVT photoelectric hot plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121778802.7U CN215909460U (en) | 2021-08-02 | 2021-08-02 | Direct expansion type heat pump hot water system based on PVT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121778802.7U CN215909460U (en) | 2021-08-02 | 2021-08-02 | Direct expansion type heat pump hot water system based on PVT |
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| Publication Number | Publication Date |
|---|---|
| CN215909460U true CN215909460U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121778802.7U Active CN215909460U (en) | 2021-08-02 | 2021-08-02 | Direct expansion type heat pump hot water system based on PVT |
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| CN (1) | CN215909460U (en) |
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2021
- 2021-08-02 CN CN202121778802.7U patent/CN215909460U/en active Active
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