Heat pump water heater with photovoltaic direct drive and waste heat recovery functions

Abstract

The utility model relates to a heat pump water heater with photovoltaic direct drive and waste heat recovery functions. The heat pump water heater comprises a photovoltaic panel, an air collector, an evaporator, an energy storage water tank, a four-way valve and a compressor assembly. An air inlet pipe is arranged at the photovoltaic panel, an air inlet of the air collector is communicated with the air inlet pipe, and an air outlet of the air collector is communicated with an air inlet of the evaporator; a port a of the four-way valve is communicated with a refrigerant inlet of the energy storage water tank, a port d of the four-way valve is communicated with a refrigerant outlet of the compressor assembly, a port b of the four-way valve is communicated with a refrigerant inlet of the compressor assembly, a port c of the four-way valve is communicated with a refrigerant outlet of the evaporator, and a refrigerant inlet of the evaporator is communicated with a refrigerant outlet of the energy storage water tank. The system has the advantages that the system has two power supply attributes of photovoltaic direct drive and commercial power supply, and when photovoltaic exists in the daytime, the unit operates through photovoltaic power generation, and heat is stored in the energy storage water tank; in cloudy days and without sunlight at night, the unit can operate by using the mains supply, so that the efficiency is maximized.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of heat pump water heaters with photovoltaic direct drive and waste heat recovery function. BACKGROUND

[0002] At present, heat pump water heater only has the power supply attribute of commercial power supply, can only use commercial power to keep the temperature of water temperature in energy storage tank, and the large power consumption of water heater leads to unnecessary waste and is not environmentally friendly. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art and provides a kind of heat pump water heaters with photovoltaic direct drive and waste heat recovery function, with photovoltaic direct drive and two power supply attributes of commercial power supply, when photovoltaic in daytime, unit utilizes the power generation of photovoltaic and runs, and heat is stored in energy storage tank;When cloudy and night without sunlight, unit can also run using commercial power, to realize efficiency maximization.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows: it is a kind of heat pump water heaters with photovoltaic direct drive and waste heat recovery function, characterized by further comprising:

[0005] Photovoltaic panel, air collector and evaporator;The air inlet pipe is provided at the photovoltaic panel, the air inlet of the air collector is communicated with the air inlet pipe, and the air outlet of the air collector is communicated with the air inlet of the evaporator;And

[0006] Energy storage tank, four-way valve and compressor assembly;The four-way valve includes a port, b port, c port and d port, the a port of the four-way valve is communicated with the d port, the b port of the four-way valve is communicated with the c port, the a port of the four-way valve is communicated with the refrigerant inlet of the energy storage tank, the d port of the four-way valve is communicated with the refrigerant outlet of the compressor assembly, the b port of the four-way valve is communicated with the refrigerant inlet of the compressor assembly, the c port of the four-way valve is communicated with the refrigerant outlet of the evaporator, the refrigerant inlet of the evaporator is communicated with the refrigerant outlet of the energy storage tank, and the photovoltaic panel is electrically connected with the compressor assembly.

[0007] In the technical scheme, electronic expansion valve and dryer are further included;The refrigerant outlet of the energy storage tank is communicated with the refrigerant inlet of the evaporator in sequence through the dryer and the electronic expansion valve.

[0008] In the technical scheme, the compressor assembly includes compressor and gas-liquid separator;The b port of the four-way valve is communicated with the d port of the four-way valve in sequence through the gas-liquid separator and the compressor, and the photovoltaic panel is electrically connected with the compressor.

[0009] In the technical scheme, exhaust pipe is further included, and the exhaust pipe is communicated with the air outlet of the evaporator.

[0010] Compared with the prior art, the utility model has the advantages that: it has photovoltaic direct drive and mains power supply, when there is photovoltaic in daytime, the unit utilizes photovoltaic power generation to run and stores heat in the energy storage water tank, when it is cloudy and there is no sunlight at night, the unit can also run by using mains power, and the efficiency is maximized. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the principle schematic diagram of the utility model;

[0012] Figure 2 It is the schematic diagram of the utility model after installation. DETAILED DESCRIPTION

[0013] The specific embodiments of the utility model will be further described in combination with the drawings. It needs to be explained here that the description of these embodiments is used to help understanding the utility model, but does not constitute the limitation to the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0014] As shown in Figure 1 And Figure 2 It is a heat pump water heater with photovoltaic direct drive and waste heat recovery function, which comprises:

[0015] Photovoltaic panel 1, air collector 2 and evaporator 3;The air inlet pipe 11 is arranged at the photovoltaic panel 1, the air inlet of the air collector 2 is communicated with the air inlet pipe 11, and the air outlet of the air collector 2 is communicated with the air inlet of the evaporator 3;And

[0016] Energy storage water tank 6, four-way valve 7 and compressor assembly;The four-way valve 7 includes a port, b port, c port and d port, the a port of the four-way valve 7 is communicated with the d port, the b port of the four-way valve 7 is communicated with the c port, the a port of the four-way valve 7 is communicated with the refrigerant inlet of the energy storage water tank 6, the d port of the four-way valve 7 is communicated with the refrigerant outlet of the compressor assembly, the b port of the four-way valve 7 is communicated with the refrigerant inlet of the compressor assembly, the c port of the four-way valve 7 is communicated with the refrigerant outlet of the evaporator 3, the refrigerant inlet of the evaporator 3 is communicated with the refrigerant outlet of the energy storage water tank 6, and the photovoltaic panel is electrically connected with the compressor assembly.

[0017] When there is sunlight, the unit utilizes photovoltaic power generation to run, the photovoltaic panel 1 is electrically connected with the compressor assembly to supply power for the compressor assembly, the heat generated when the photovoltaic panel 1 generates electricity is absorbed by the evaporator 3 through the air inlet pipe 11 and the air collector 2, thereby improving the heat output of the unit, truly realizing free hot water in the daytime, and the excess hot water is stored in the energy storage water tank 6;When it is cloudy and there is no sunlight at night, the unit can also run by using mains power, and the efficiency is maximized.

[0018] In the embodiment, an electronic expansion valve 4 and a dryer 5 are further included; the refrigerant outlet of the energy storage water tank 6 is communicated with the refrigerant inlet of the evaporator 3 through the dryer 5 and the electronic expansion valve 4 in sequence.

[0019] In the embodiment, the compressor assembly includes a compressor 8 and a gas-liquid separator 9; the b port of the four-way valve 7 is communicated with the d port of the four-way valve 7 through the gas-liquid separator 9 and the compressor 8 in sequence, and the photovoltaic panel 1 is electrically connected with the compressor 8.

[0020] In the embodiment, an exhaust pipe 10 is further included; the exhaust pipe 10 is communicated with the air outlet of the evaporator 3.

[0021] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and deformations of the embodiments without departing from the principles and purposes of the utility model still fall within the protection scope of the utility model.

Claims

1. A heat pump water heater with photovoltaic direct drive and waste heat recovery functions, characterized in that... Also includes: A photovoltaic panel (1), an air collector (2), and an evaporator (3); an air inlet pipe (11) is provided at the photovoltaic panel (1), the air inlet of the air collector (2) is connected to the air inlet pipe (11), and the air outlet of the air collector (2) is connected to the air inlet of the evaporator (3); and The energy storage tank (6), the four-way valve (7), and the compressor assembly are as follows: The four-way valve (7) includes port a, port b, port c, and port d. Port a of the four-way valve (7) is connected to port d, port b of the four-way valve (7) is connected to port c, port a of the four-way valve (7) is connected to the refrigerant inlet of the energy storage tank (6), port d of the four-way valve (7) is connected to the refrigerant outlet of the compressor assembly, port b of the four-way valve (7) is connected to the refrigerant inlet of the compressor assembly, port c of the four-way valve (7) is connected to the refrigerant outlet of the evaporator (3), the refrigerant inlet of the evaporator (3) is connected to the refrigerant outlet of the energy storage tank (6), and the photovoltaic panel (1) is electrically connected to the compressor assembly.

2. A heat pump water heater with photovoltaic direct drive and waste heat recovery functions according to claim 1, characterized in that... It also includes an electronic expansion valve (4) and a dryer (5); the refrigerant outlet of the energy storage tank (6) is connected to the refrigerant inlet of the evaporator (3) after passing through the dryer (5) and the electronic expansion valve (4) in sequence.

3. A heat pump water heater with photovoltaic direct drive and waste heat recovery functions according to claim 1, characterized in that... The compressor assembly includes a compressor (8) and a gas-liquid separator (9); the b port of the four-way valve (7) is connected to the d port of the four-way valve (7) after passing through the gas-liquid separator (9) and the compressor (8) in sequence; the photovoltaic panel (1) is electrically connected to the compressor (8).

4. A heat pump water heater with photovoltaic direct drive and waste heat recovery functions according to claim 1, characterized in that... It also includes an exhaust pipe (10) that is connected to the air outlet of the evaporator (3).

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