CN203310085U - High-efficiency heat recovery heat pump water heater - Google Patents

Abstract

The utility model discloses a high-efficiency heat recovery heat pump water heater, which comprises a heat pump module, a heat recovery module and a hot water supply module. The heat pump module is connected with the hot water supply module through a circulation pump. The device transfers the heat of the bathing wastewater to the evaporator of the heat pump module. After the heat pump module absorbs the heat and turns the refrigerant into a low-pressure gas, it compresses it into high-temperature and high-pressure steam, and heats the hot water supply module to the hot water tank through the circulation pump. When the water temperature in the hot water tank reaches the requirement, the heat pump water heater stops working. The utility model makes full use of waste water waste heat, saves energy and reduces emissions. The heat pump module has a simple structure, no wearing parts (such as a four-way reversing valve), and does not need to be in contact with tap water and waste water. It is not easy to scale and has high reliability.

Description

A high-efficiency heat recovery heat pump water heater

technical field

The utility model relates to a heat pump water heater, in particular to a high-efficiency heat recovery heat pump water heater.

Background technique

With the development of the economy, people's living standards are constantly improving, and the simultaneous demand for air conditioning and hot water in hotels, clubs, bathing centers and other buildings makes the application of heat pump water heaters increasingly widespread.

Traditional air source heat pump water heaters have low efficiency and are greatly affected by the ambient temperature during use. When used in winter, the outlet water temperature and water output are obviously affected by low temperature, and the efficiency is very low. Although ordinary water source heat pump water heaters are better in energy efficiency than air source heat pump water heaters, they cannot be popularized due to well drilling permits or restrictions on surface water quality and water quantity. very high. Moreover, heat recovery cannot be performed on high-temperature wastewater from hotels, clubs, and bathing centers, resulting in a large amount of waste of heat energy.

In addition, the traditional heat pump water heater condenser is prone to fouling, and it is inconvenient to clean. With the prolongation of use time, the energy efficiency of the heat pump water heater will be further deteriorated.

Utility model content

The technical problem to be solved by the utility model is that the traditional heat pump water heater has poor energy efficiency, easy scaling and inconvenient cleaning.

The utility model adopts the following technical solutions for solving the above-mentioned technical problems:

A high-efficiency heat recovery heat pump water heater, including a heat pump module, a heat recovery module and a hot water supply module. The heat recovery module absorbs waste heat from bathing wastewater and transfers it to the heat pump module. The heat pump module absorbs heat and generates high-temperature steam and transfers the heat to the hot water supply module. , the hot water supply module module absorbs heat to generate hot water, and the heat recovery module includes a filter, a water pump, a bath waste water reservoir, two detachable joints and a coil heat exchanger, and the coil heat exchanger is placed in the bath In the waste water storage tank, it is connected to one end of the heat release side of the plate evaporator in the water pump and heat pump module respectively through two detachable heads, and the other end of the heat release side of the plate evaporator in the water pump and heat pump module is respectively connected to two ends of the filter. end connected.

As a further optimization scheme of the utility model, the heat pump module includes a compressor, a thermal expansion valve, a plate condenser and a plate evaporator, and the compressor, the condensation side of the plate condenser, the thermal expansion valve, and the heat absorption side of the plate evaporator are connected in sequence Form the circulatory system.

As a further optimization scheme of the utility model, the hot water supply module includes a plate heat exchanger, two water pumps, a filter, a hot water tank, and an electric valve, and one of the water pumps is connected to the heat absorbing side of the plate heat exchanger, the hot water The tank and filter are connected in sequence to form a circulation system. The hot water tank is connected to the tap water pipe through an electric valve, and connected to the hot water supply pipe through another water pump. The heat-absorbing side of the condenser is connected.

As a further optimization solution of the present invention, the plate heat exchanger in the hot water supply module is a detachable plate heat exchanger.

Compared with the prior art by adopting the above technical scheme, the utility model has the following technical effects:

1. The heat of bathing wastewater is fully utilized, and the energy efficiency is significantly improved compared with traditional air source heat pumps and water source heat pumps, and the effect of energy saving and emission reduction is obvious;

2. Secondary heat exchange is adopted, the heat pump module does not need to be in contact with tap water and waste water, it is not easy to scale, and does not affect heat exchange;

3. The heat pump module has a simple structure, no wearing parts (such as four-way reversing valve), and high reliability;

4. The heat recovery module adopts a detachable smooth coil heat exchanger, and the hot water supply module adopts a detachable plate heat exchanger. When cleaning is required, the heat pump device is not involved, and it is easy to disassemble and clean.

Description of drawings

Figure 1 is a schematic diagram of a high-efficiency heat recovery heat pump water heater system.

Detailed ways

Below in conjunction with accompanying drawing, the technical scheme of the utility model is described in further detail:

As shown in Figure 1, the utility model discloses a high-efficiency heat recovery heat pump water heater, which includes a heat pump module a, a heat recovery module b, and a hot water supply module c, wherein the heat pump module includes a compressor 1, a thermal expansion valve 2, a plate condenser The evaporator 3 and the plate evaporator 4, the compressor 1, the condensing side of the plate condenser 3, the thermal expansion valve 2, and the heat-absorbing side of the plate evaporator 4 are connected in turn to form a circulation system, and the working process is as follows:

Step 1), the refrigerant is compressed by the compressor 1 into high-temperature and high-pressure steam, enters the plate condenser 3 for cooling, condenses and releases heat, and turns into a liquid, and the released heat is transferred to the hot water supply module c through the circulation pump 5;

Step 2), the condensed liquid refrigerant is throttled and decompressed by the thermal expansion valve 2 to become a low-pressure liquid, and then enters the plate evaporator 4 to absorb the heat in the heat recovery module b, and is vaporized into low-pressure steam;

Step 3), low-pressure steam is sucked by compressor 1, and step 1) is performed again.

The heat recovery module b is a closed circulation system, including a filter 12, a water pump 13, a bathing wastewater storage tank 17, two detachable joints 14, 15 and a coil heat exchanger 16, wherein the coil heat exchanger 16 is placed In the bathing waste water reservoir 17, two detachable heads 14, 15 are respectively connected to the water pump 13 and one end of the heat release side of the plate evaporator 4 in the heat pump module a, and the water pump 13 and the plate evaporator 4 in the heat pump module a are placed The other end of the hot side is connected to both ends of the filter 12 respectively. When the heat pump water heater is working, the heat exchange medium in the coil heat exchanger 16 and the bathing wastewater undergo heat exchange, and the heat is transferred to the heat pump module a through the water pump 13 In the plate evaporator 4, the heat of the bathing waste water is absorbed and cooled and discharged by the sewer.

The hot water supply module includes a detachable plate heat exchanger 6, a filter 9, a hot water tank 10, an electric valve 11 and two water pumps 7, 8, one of which is connected to the heat-absorbing side of the plate heat exchanger 6, The hot water tank 10 and the filter 9 are sequentially connected to form a circulation system. The hot water tank 10 is connected to the tap water pipe through the electric valve 11, and connected to the hot water supply pipe through another water pump 8. The heat release side of the plate heat exchanger 6 The circulation pump 5 is connected to the heat-absorbing side of the plate condenser 3 in the heat pump module a. When the heat pump water heater is working, a water pump 7 pumps the water in the hot water tank 10 to the detachable plate heat exchanger 6 through the filter 9 Heating, when the water temperature in the hot water tank 10 reaches the requirement, the heat pump water heater stops working, and when replenishment is required, tap water is injected into the hot water tank 10 through the electric valve 11; The hot water in the water tank 10 is pumped out, and the bathing waste water is led to the bathing waste water reservoir 17 of the heat recovery module b through the collection pipe, and the heat therein is absorbed and discharged through the sewer.

Claims (4)

1. A high-efficiency heat recovery heat pump water heater, which is characterized in that it includes a heat pump module, a heat recovery module and a hot water supply module, the heat recovery module absorbs the waste heat of bathing wastewater and transfers it to the heat pump module, and the heat pump module absorbs heat and generates high temperature and transfers it to the hot water supply Module, hot water supply module The module absorbs heat to generate hot water, and the heat recovery module includes a filter, a water pump, a bathing wastewater storage tank, two detachable joints and a coil heat exchanger, and the coil heat exchanger is placed In the bathing waste water reservoir, two detachable heads are respectively connected to one end of the heat release side of the plate evaporator in the water pump and heat pump module, and the other end of the heat release side of the plate evaporator in the water pump and heat pump module is connected to the filter respectively. connected at both ends. 2. A high-efficiency heat recovery heat pump water heater according to claim 1, characterized in that the heat pump module includes a compressor, a thermal expansion valve, a plate condenser and a plate evaporator, the compressor, the plate condenser condensation side, and the thermal The expansion valve and the heat-absorbing side of the plate evaporator are connected in turn to form a circulation system. 3. A high-efficiency heat recovery heat pump water heater according to claim 2, characterized in that the hot water supply module includes a plate heat exchanger, two water pumps, a filter, a hot water tank, and an electric valve, one of which is connected to the The heat absorbing side of the plate heat exchanger, the hot water tank, and the filter are connected in sequence to form a circulation system. The hot water tank is connected to the tap water pipe through an electric valve, and connected to the hot water supply pipe through another water pump. The plate heat exchanger The condensation side is connected to the heat absorption side of the plate condenser in the heat pump module through a circulation pump. 4. A high-efficiency heat recovery heat pump water heater according to claim 3, wherein the plate heat exchanger in the hot water supply module is a detachable plate heat exchanger.

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