CN202074696U - Low-temperature air injection enthalpy increasing heat pump water heater - Google Patents

Abstract

The utility model relates to a low-temperature gas-injection enthalpy-increasing heat pump water heater, which comprises a compressor, a condenser and an evaporator. One side of the compressor is connected to a gas-liquid separator through a pipeline, and the other side of the compressor is connected to a plate heat exchanger through a pipeline. The upper part of the compressor is connected to the four-way valve through the pipeline, and the four-way valve is respectively connected to the condenser, the gas-liquid separator and the evaporator through the pipeline. There is an air inlet on the side, and the plate heat exchanger is provided with a left flow channel and a right flow channel. The upper end of the left flow channel is connected to the condenser through a pipe, and the upper end of the right flow channel is connected to the compressor through a pipe. A main electronic expansion valve is installed on the pipeline between the left flow channel and the evaporator, and a solenoid valve and a jet electronic expansion valve are installed on the pipeline between the bottom of the right flow channel and the condenser. The beneficial effects of the utility model are: high working efficiency and good energy saving effect.

Description

A low-temperature air injection enthalpy-increasing heat pump water heater

technical field

The utility model relates to a low-temperature air injection enthalpy-increasing heat pump water heater. the

Background technique

At present, there are many types of heat pump water heaters on the market, mainly including three series: solar booster, water source and air source. Solar boosted heat pump is a heat pump technology combined with heat pump and solar technology; water source heat pump uses water source at a certain temperature (above 20°C) as the heat source, uses refrigerant as the medium, absorbs the heat in the water source and compresses it through the compressor Heating, through the heat exchanger and cold water exchange heat to achieve the purpose of heating and making hot water, the water source heat pump must have a certain temperature and flow of water; the air source heat pump obtains heat from the air in a similar way to the water source heat pump to heat water. the

Air source heat pump is one of the most advanced energy utilization products in the world today. With the rapid development of the economy and the improvement of people's living standards, domestic hot water has become a necessity for people's daily life. However, traditional water heaters (electric water heaters, fuel oil, gas water heaters) have the disadvantages of high energy consumption, high cost, and serious pollution; The operation of energy-saving and environment-friendly solar water heaters is restricted by meteorological conditions. The heating principle of the air source heat pump is completely different from that of the traditional solar water heater. The air source heat pump uses air, water, solar energy, etc. The system directly sends it to the user as hot water supply or uses the fan coil unit for small-area heating. Air source heat pump is currently the best solution for large, medium and small hot water centralized supply systems in school dormitories, hotels, bathing centers and other places. 

At present, similar products in the market do not have control systems such as solenoid valves, jet electronic expansion valves, and main electronic expansion valves. Usually, the low-temperature refrigerant is directly sent to the compressor for secondary heating, so that the temperature of the compressor changes from time to time. The work efficiency is low, and the energy-saving effect is not good.

Utility model content

The purpose of the utility model is to provide a low-temperature gas-injection enthalpy-increasing heat pump water heater, so that the working efficiency of the compressor is higher and the energy-saving effect is better. the

The purpose of this utility model is to realize through the following technical solutions:

A low-temperature air injection enthalpy heat pump water heater, including a compressor, a condenser and an evaporator, one side of the compressor is connected to a gas-liquid separator through a pipeline, the other side of the compressor is connected to a plate heat exchanger through a pipeline, and the upper part of the compressor is passed through The pipe is connected to the four-way valve, and the four-way valve is respectively connected to the condenser, gas-liquid separator and evaporator through the pipe. The upper part and the lower part of the condenser are respectively provided with a hot water outlet and a cold water inlet, and the evaporator is provided with an inlet. Gas port, the plate heat exchanger is provided with a left flow channel and a right flow channel, the upper end of the left flow channel is connected to the condenser through a pipe, the upper end of the right flow channel is connected to the compressor through a pipe, and the left flow channel The pipeline between the evaporator and the evaporator is provided with a main electronic expansion valve, and the pipeline between the bottom of the right channel and the condenser is provided with a solenoid valve and a jet electronic expansion valve.

The beneficial effects of the utility model are: high working efficiency and good energy saving effect. the

Description of drawings

Below according to accompanying drawing, the utility model is described in further detail. the

Fig. 1 is a schematic structural view of a low-temperature air injection enthalpy-increasing heat pump water heater described in an embodiment of the present invention. the

In the picture:

1. Compressor; 2. Four-way valve; 3. Evaporator; 4. Gas-liquid separator; 5. Plate heat exchanger; 6. Condenser; 7. Jet electronic expansion valve; 8. Solenoid valve; 9. Main Electronic expansion valve; 10, air inlet; 11, hot water outlet; 12, cold water inlet.

Detailed ways

As shown in Figure 1, a low-temperature air injection enthalpy-increasing heat pump water heater described in the embodiment of the present invention includes a compressor 1, a condenser 6 and an evaporator 3, and one side of the compressor 1 is connected to a gas-liquid separator through a pipeline 4. The other side of the compressor 1 is connected to the plate heat exchanger 5 through a pipeline, the upper part of the compressor 1 is connected to the four-way valve 2 through a pipeline, and the four-way valve 2 is connected to the condenser 6, the gas-liquid separator 4 and the evaporator through pipelines 3. The upper and lower parts of the condenser 6 are respectively provided with a hot water outlet 11 and a cold water inlet 12, and the side of the evaporator 3 is provided with an air inlet 10, and the plate heat exchanger 5 is provided with a left flow channel and a The right flow channel, the upper end of the left flow channel is connected to the condenser 6 through the pipeline, the upper end of the right flow channel is connected to the compressor 1 through the pipeline, and the main electronic expansion valve is installed on the pipeline between the left flow channel and the evaporator 3 9. The pipeline between the bottom of the right channel and the condenser 6 is provided with a solenoid valve 8 and an injection electronic expansion valve 7 . the

In specific use, the compressor 1 compresses and heats the refrigerant, and after heating, the high-temperature refrigerant flows to the four-way valve 2, enters the condenser 6, and transfers heat to the cold water at the cold water inlet 12, so that the cold water heats up to form high-temperature hot water and is discharged from the hot water outlet 11. The high-temperature refrigerant flows out of the low-temperature refrigerant after heat exchange in the condenser 6. At this time, the front-end solenoid valve 8 and the injection electronic expansion valve 7 monitor the flow rate of the outflow low-temperature refrigerant, and control the flow of the low-temperature refrigerant into the compressor 1 for secondary heating. , so as to play the role of environmental protection and energy saving. At this time, a large amount of hot air is generated outside the water heater, and the air inlet 10 of the evaporator 3 sucks the hot air to the four-way valve 2, enters the gas-liquid separator 4 to separate the gas and liquid, and then After the gas is sent into the compressor 1, it is heated twice to play the role of environmental protection and energy saving, and then continues to circulate and supply according to the above-mentioned method. the

The utility model is not limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the enlightenment of the utility model, but no matter make any changes in its shape or structure, all have the same features as the application Or similar technical schemes all fall within the protection scope of the present utility model. the

Claims (1)

1. A low-temperature air jet enthalpy-increasing heat pump water heater, comprising a compressor (1), a condenser (6) and an evaporator (3), characterized in that one side of the compressor (1) is connected to a gas-liquid separator through a pipeline (4), the other side of the compressor (1) is connected to the plate heat exchanger (5) through a pipeline, the upper part of the compressor (1) is connected to the four-way valve (2) through a pipeline, and the four-way valve (2) is connected through a pipeline Condenser (6), gas-liquid separator (4) and evaporator (3), the upper and lower parts of one side of the condenser (6) are respectively provided with a hot water outlet (11) and a cold water inlet (12), the evaporator ( 3) There is an air inlet (10) on one side; a left flow passage and a right flow passage are provided in the plate heat exchanger (5), and the upper end of the left flow passage is connected to the condenser (6) through a pipe, and the right flow passage is connected to the condenser (6). The upper end of the flow channel is connected to the compressor (1) through a pipeline, the main electronic expansion valve (9) is installed on the pipeline between the left flow channel and the evaporator (3), the bottom of the right flow channel is connected to the condenser (6) A solenoid valve (8) and an injection electronic expansion valve (7) are provided on the pipeline between them.

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