Dehumidification type heat pump water heater

Abstract

The utility model relates to the technical field of water heaters, in particular to a dehumidification type heat pump water heater which comprises a water tank and a heating part, an installation cavity is formed in the heating part, a directly-heated type efficient tank heat exchanger, a medium-pressure fan, an air cavity and a compression type heat pump are installed in the installation cavity, and a condenser of the compression type heat pump is arranged in the directly-heated type efficient tank heat exchanger. A dehumidification evaporator of the compression heat pump is arranged in the air cavity; the directly-heated efficient tank heat exchanger is connected with the water tank; a silencing filter part is arranged at the air inlet end of the medium-pressure fan, the air outlet end of the medium-pressure fan communicates with an air inlet of the air cavity, an air outlet of the air cavity is connected with a backflow air adjusting opening, and a condensation drain pipe is arranged on the dehumidification evaporator. The directly-heated efficient tank heat exchanger, the medium-pressure fan, the air cavity and the compression heat pump are mounted in the mounting cavity, so that the heating part can be integrally mounted indoors for use, water is heated by the aid of indoor air, air which is stable in indoor temperature and cannot be at an over-low temperature can be utilized, and heating efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water heaters, in particular to a dehumidification type heat pump water heater. Background Art

[0002] Air source heat pump water heater is a new green energy industry. Compared with traditional gas and electric water heater products, it is not only safe, but also energy-saving and environmentally friendly. Even compared with solar energy, it has obvious advantages. It changes the way traditional solar energy products only rely on direct sunlight or radiation to collect energy. It uses the refrigerant in the equipment to collect heat energy from the natural environment air and heats the cold water through the heat exchanger.

[0003] The working principle is the same as that of a refrigerator, and both work according to the reverse Carnot cycle, but the operating temperature range is different. A compression heat pump is mainly composed of four parts: evaporator, compressor, condenser and expansion valve. It transfers the heat from the environment to the water by allowing the working fluid to continuously complete the thermodynamic cycle of evaporation (absorbing heat from the environment) → compression → condensation (releasing heat) → throttling → re-evaporation.

[0004] The evaporators of existing heat pump water heaters are basically installed outdoors, and they have the following main disadvantages:

[0005] 1. Obtain low-grade heat from the outdoors and upgrade it to high-grade heat for domestic hot water through a heat pump. Disadvantages: The outdoor temperature fluctuates greatly, the heating supply is unstable, and too low outdoor temperature affects the heating efficiency of the heat pump;

[0006] 2. The heat pump water heater installed outdoors has high requirements for the heat pump operating margin, which leads to compromise with the operating margin during the heat pump design, resulting in low heating efficiency.

[0007] 3. Modern life has higher requirements for indoor living environment. Indoor humidity control requires a dehumidifier or a dehumidification fresh air system to reduce indoor humidity. Additional equipment needs to be purchased, and the equipment is only used at certain times, so the equipment utilization rate is low. Utility Model Content

[0008] The purpose of the utility model is to provide a dehumidification type heat pump water heater to solve the problem in the prior art that the evaporator of the heat pump water heater is basically installed outdoors, which makes the evaporator easily affected by outdoor temperature fluctuations, the heating is unstable, and the outdoor temperature is too low, which leads to a decrease in the heating efficiency of the heat pump.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A dehumidification heat pump water heater comprises a water tank and a heating part, wherein an installation cavity is arranged in the heating part, wherein a direct-heating high-efficiency tank heat exchanger, a medium-pressure fan, an air cavity and a compression heat pump are installed in the installation cavity, wherein a condenser of the compression heat pump is arranged in the direct-heating high-efficiency tank heat exchanger, and a dehumidification evaporator of the compression heat pump is arranged in the air cavity; the direct-heating high-efficiency tank heat exchanger is connected to the water tank; a silencer filter is arranged at the air inlet end of the medium-pressure fan, and the air outlet end is communicated with the air inlet of the air cavity, the air outlet of the air cavity is connected to a reflux air regulating port, and a condensation drain pipe is arranged on the dehumidification evaporator.

[0011] A further technical solution is that the water tank is connected to the direct-heated high-efficiency tank heat exchanger through a hot water riser and a cold water sinker, and a hot water circulation pump and a cold water inlet pipe are provided on the cold water sinker.

[0012] A further technical solution is that a water inlet one-way valve is provided on the cold water inlet pipe for one-way conduction toward the cold water sinking pipe.

[0013] A further technical solution is that the compression heat pump includes a compressor and an expansion valve, as well as a dehumidification evaporator and a condenser, the outlet of the compressor is connected to the inlet of the condenser, the outlet of the condenser is connected to the inlet of the dehumidification evaporator through the expansion valve, and the outlet of the dehumidification evaporator is connected to the inlet of the compressor.

[0014] A further technical solution is that a condensation water tank is installed at the lower side of the heating part, and the condensation drain pipe is connected to the condensation water tank.

[0015] A further technical solution is that a water temperature probe is installed in the water tank and a hot water supply pipe is arranged on the water tank.

[0016] A further technical solution is that an air inlet and an air outlet connected to the installation cavity are respectively provided on opposite sides of the heating part, the air inlet end of the medium pressure fan is connected to the air inlet, and a silencer filter is installed at the air inlet, and the return air regulating port is connected to the air outlet.

[0017] A further technical solution is that an odor removal component is installed in the air outlet.

[0018] Compared with the prior art, the utility model has at least one of the following beneficial effects: 1. The direct-heated high-efficiency tank heat exchanger, the medium-pressure fan, the air cavity and the compression heat pump are installed in the installation cavity, so that the heating part can be installed as a whole indoors for use, and the indoor air is used to heat the water. The indoor temperature is relatively stable and the air is not at a too low temperature, which can improve the heating efficiency; 2. By arranging a silencer filter at the air inlet end of the medium-pressure fan, it can not only filter the indoor air to achieve the fresh air effect, but also reduce the noise generated by the medium-pressure fan when the air is inlet, thereby improving the comfort of use; 3. By arranging a reflux air regulating port, it can adjust the exhaust air so that part of the air refluxes and mixes with the air that has not been dehumidified, thereby reducing the humidity of the air that has not been dehumidified. In this way, after passing through the dehumidification evaporator, the air humidity can be better reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall framework of a dehumidification type heat pump water heater of the utility model.

[0020] Figure 2 It is a side schematic diagram of a dehumidification type heat pump water heater of the utility model.

[0021] Figure 3 The utility model is a schematic top view of the heating part of a dehumidification heat pump water heater.

[0022] Icons: 1-water tank, 2-heating unit, 3-direct-heated high-efficiency tank heat exchanger, 4-medium-pressure fan, 5-air cavity, 6-condenser, 7-silence filter, 8-dehumidification evaporator, 9-reflux air regulating vent, 10-condensation drain pipe, 11-hot water riser, 12-cold water sinker, 13-hot water circulation pump, 14-cold water inlet pipe, 15-water inlet check valve, 16-compressor, 17-expansion valve, 18-condensation water tank, 19-water temperature probe, 20-air inlet, 21-air outlet. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0024] Figures 1 to 3 Shown is an embodiment of the utility model.

[0025] Embodiment 1:

[0026] like Figure 1-3As shown, a dehumidification type heat pump water heater comprises a water tank 1 and a heating part 2, wherein an installation cavity is provided in the heating part 2, wherein a direct heating type high efficiency tank heat exchanger 3, a medium pressure fan 4, an air cavity 5 and a compression type heat pump are installed in the installation cavity, wherein a condenser 6 of the compression type heat pump is placed in the direct heating type high efficiency tank heat exchanger 3, and a dehumidification evaporator 8 of the compression type heat pump is placed in the air cavity 5; the direct heating type high efficiency tank heat exchanger 3 is connected to the water tank 1; a silencer filter 7 is provided at the air inlet end of the medium pressure fan 4, and the air outlet end is connected to the air inlet of the air cavity 5, and a reflux air regulating port 9 is connected to the air outlet of the air cavity 5, and a condensation drain pipe 10 is provided on the dehumidification evaporator 8. The direct heating type high efficiency tank heat exchanger 3, the medium pressure fan 4, the air cavity 5 and the compression type heat pump are installed in the installation cavity, so that the heating part 2 can be installed indoors as a whole for use, and the water can be heated by using the indoor air, and the indoor temperature can be relatively stable and the air that is not at too low a temperature can be used, so as to improve the heating efficiency. By setting a silencer filter 7 at the air inlet end of the medium-pressure fan 4, it is not only possible to filter the indoor air and achieve a fresh air effect, but also to reduce the noise generated when the medium-pressure fan 4 is inlet, thereby improving the comfort of use. By setting a reflux air regulating port 9, it is possible to adjust the exhaust air so that part of the air refluxes and mixes with the air that has not been dehumidified, thereby reducing the humidity of the air that has not been dehumidified, so that after passing through the dehumidification evaporator 8, the humidity of the air can be better reduced. The installation positions of the components in the installation cavity are not particularly limited, as long as they can meet the use requirements. The silencer filter 7 is a silencer with a filtering function, and a ready-made product in the prior art can be used. The Chinese patent with application number CN202322008849.0 also discloses a compressor silencer filter, whose main function is to reduce the noise generated when the air flows at high speed and filter the air.

[0027] The water tank 1 is connected to the direct-heating high-efficiency tank heat exchanger 3 through the hot water riser 11 and the cold water sinking pipe 12, and the cold water sinking pipe 12 is provided with a hot water circulation pump 13 and a cold water inlet pipe 14. With such a configuration, the water with a reduced temperature in the water tank 1 can be pumped into the direct-heating high-efficiency tank heat exchanger 3 for heating with the help of the hot water circulation pump 13, and then the heated water in the direct-heating high-efficiency tank heat exchanger 3 is pushed into the water tank 1 for storage and standby. By providing the cold water inlet pipe 14, water can be replenished with the help of the cold water inlet pipe 14 after the hot water is used, and the replenished cold water first enters the direct-heating high-efficiency tank heat exchanger 3 for heating.

[0028] The cold water inlet pipe 14 is provided with a water inlet check valve 15 which is unidirectionally conducted toward the cold water sink pipe 12. By providing the water inlet check valve 15, water can be prevented from flowing back into the cold water inlet pipe 14.

[0029] The compression heat pump includes a compressor 16 and an expansion valve 17, as well as a dehumidification evaporator 8 and a condenser 6. The outlet of the compressor 16 is connected to the inlet of the condenser 6, and the outlet of the condenser 6 is connected to the inlet of the dehumidification evaporator 8 through the expansion valve 17. The outlet of the dehumidification evaporator 8 is connected to the inlet of the compressor 16. According to the reverse Carnot cycle, the heat of the air is absorbed by the dehumidification evaporator 8, and then after being compressed by the compressor 16, the heat is released in the condenser 6, so that the water in the direct-heated high-efficiency tank heat exchanger 3 is heated.

[0030] A condensation water tank 18 is installed at the lower side of the heating part 2, and the condensation drain pipe 10 is connected to the condensation water tank 18. When the air passes through the dehumidification evaporator 8, the water vapor in the air will condense to form water droplets, and the water droplets will be collected together through the tray at the lower side of the dehumidification evaporator 8, and will be concentrated in the condensation water tank 18 through the condensation drain pipe 10 for storage, so as to facilitate the subsequent treatment of these water. The condensation water tank 18 can be installed at the lower side of the heating part 2 in the form of a drawer or a bottle mouth screw, so that it is convenient to remove the condensation water tank 18 and pour out the water in the condensation water tank 18.

[0031] A water temperature probe 19 is installed in the water tank 1, and a hot water supply pipe is provided on the water tank 1. By providing the water temperature probe 19, the water temperature in the water tank 1 can be monitored. When the water temperature reaches the set temperature, the medium-pressure fan 4, the compressor 16, etc. are controlled to stop working through the control system. When the temperature drops to a certain temperature, the medium-pressure fan 4, the compressor 16, etc. are started to work.

[0032] An air inlet 20 and an air outlet 21 connected to the installation cavity are respectively provided on opposite sides of the heating part 2, the air inlet end of the medium-pressure fan 4 is connected to the air inlet 20, and the silencer filter 7 is installed at the air inlet 20, and the return air regulating port 9 is connected to the air outlet 21. When the medium-pressure fan 4 starts to work, air enters the air inlet end of the medium-pressure fan 4 through the air inlet 20. By installing the silencer filter 7 at the air inlet 20, it is convenient to remove the silencer filter 7 for replacement or cleaning after the silencer filter 7 has been used for a period of time.

[0033] An odor removal component is installed in the air outlet 21. By providing the odor removal component, the odor in the air can be effectively removed when the air is discharged, thereby improving the air quality. The odor removal component can be made of activated carbon or other materials with odor removal function. When the air is discharged, it passes through the odor removal component, thereby removing the odor in the air.

[0034] Although the utility model is described herein with reference to a plurality of illustrative embodiments of the utility model, it should be understood that those skilled in the art may devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the disclosure, drawings, and claims of the present application, various modifications and improvements may be made to the components and / or layout of the subject combination layout. In addition to the modifications and improvements made to the components and / or layout, other uses will also be apparent to those skilled in the art.

Claims

1. A dehumidification heat pump water heater, comprising a water tank (1) and a heating unit (2), characterized in that: The heating portion (2) is provided with an installation cavity, in which a direct-heating high-efficiency tank heat exchanger (3), a medium-pressure fan (4), an air cavity (5) and a compression heat pump are installed, the condenser (6) of the compression heat pump is placed in the direct-heating high-efficiency tank heat exchanger (3), and the dehumidification evaporator (8) of the compression heat pump is placed in the air cavity (5); the direct-heating high-efficiency tank heat exchanger (3) is connected to the water tank (1); the air inlet end of the medium-pressure fan (4) is provided with a silencer filter (7), the air outlet end is connected to the air inlet of the air cavity (5), the air outlet of the air cavity (5) is connected to a reflux air regulating port (9), and the dehumidification evaporator (8) is provided with a condensation drain pipe (10).

2. A dehumidification type heat pump water heater according to claim 1, characterized in that: The water tank (1) is connected to the direct-heating high-efficiency tank heat exchanger (3) via a hot water riser (11) and a cold water sinker (12), and a hot water circulation pump (13) and a cold water inlet pipe (14) are provided on the cold water sinker (12).

3. A dehumidification type heat pump water heater according to claim 2, characterized in that: The cold water inlet pipe (14) is provided with a water inlet check valve (15) which conducts one-way flow toward the cold water sinking pipe (12).

4. A dehumidification type heat pump water heater according to claim 1, characterized in that: The compression heat pump comprises a compressor (16) and an expansion valve (17), as well as the dehumidification evaporator (8) and a condenser (6); the outlet of the compressor (16) is connected to the inlet of the condenser (6); the outlet of the condenser (6) is connected to the inlet of the dehumidification evaporator (8) via the expansion valve (17); and the outlet of the dehumidification evaporator (8) is connected to the inlet of the compressor (16).

5. The dehumidification type heat pump water heater according to claim 1, characterized in that: A condensation water tank (18) is installed on the lower side of the heating portion (2), and the condensation drainage pipe (10) is connected to the condensation water tank (18).

6. A dehumidification type heat pump water heater according to claim 1, characterized in that: A water temperature probe (19) is installed in the water tank (1), and a hot water supply pipe is provided on the water tank (1).

7. A dehumidification type heat pump water heater according to claim 1, characterized in that: An air inlet (20) and an air outlet (21) which are in communication with the installation cavity are respectively arranged on opposite sides of the heating portion (2); an air inlet end of the medium-pressure fan (4) is in communication with the air inlet (20); and the silencer filter (7) is installed on the air inlet (20); and the return air regulating port (9) is in communication with the air outlet (21).

8. A dehumidification type heat pump water heater according to claim 7, characterized in that: An odor removal component is installed in the air outlet (21).

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