Split type air energy heat pump heating water heating system

Abstract

The utility model provides a split type air energy heat pump heating water heating system which comprises an outdoor unit and an indoor unit which are connected through a refrigerant pipeline, and is characterized in that the indoor unit comprises a hot water heat exchanger, a hot water tank and a heating heat exchanger, one end of a refrigerant channel of the hot water heat exchanger is connected with a first port of a refrigerant pipeline of the outdoor unit, the other end of the refrigerant channel of the hot water heat exchanger is connected with one end of a refrigerant channel of the heating heat exchanger, and the other end of the refrigerant channel of the heating heat exchanger is connected with a second port of the refrigerant pipeline of the outdoor unit. A heating water pipe inlet of the heating heat exchanger is connected with an external heating water inlet pipe, and a heating water pipe outlet of the heating heat exchanger is connected with an external heating water outlet pipe. The split type air energy heat pump heating and water heating system has the heating and water heating functions, the heating and water heating functions can be independently operated, the heating and water heating functions can be jointly operated, and the split type air energy heat pump heating and water heating system is multipurpose.

Description

Technical Field

[0001] The utility model relates to the technical field of water chillers, and more specifically to a split-type air energy heat pump heating and hot water system. Background Art

[0002] Due to the split design, the indoor unit of the split air energy heat pump is placed indoors, which makes it more resistant to freezing than the integral air energy heat pump and more energy-efficient and environmentally friendly than the traditional gas wall-mounted boiler. At present, the split air energy heat pump has the following disadvantages:

[0003] 1. Generally, it only has heating function but no hot water function, while the traditional heating equipment, gas wall-mounted boiler, has heating and hot water functions, and cannot completely replace the gas wall-mounted boiler. When hot water is needed, other types of water heaters need to be purchased additionally, and one machine cannot be used for multiple purposes.

[0004] 2. The energy efficiency ratio is not high when used for heating, the water temperature drops during defrosting, and the heating comfort is not high.

[0005] Therefore, at present, when users choose a split-type air-source heat pump for heating, they may still need to purchase additional gas water heaters or electric water heaters to meet their hot water needs. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a split-type air energy heat pump heating and hot water system, which solves the problems mentioned in the above background technology.

[0007] To achieve the above objectives, the utility model provides a split-type air-to-air heat pump heating and hot water system, comprising an outdoor unit and an indoor unit, wherein the indoor unit is connected to the outdoor unit through a refrigerant pipe, and is characterized in that the indoor unit comprises a hot water heat exchanger, a hot water tank and a heating heat exchanger, one end of the refrigerant channel of the hot water heat exchanger is connected to the first port of the refrigerant pipe of the outdoor unit, and the other end is connected to one end of the refrigerant channel of the heating heat exchanger, and the other end of the refrigerant channel of the heating heat exchanger is connected to the second port of the refrigerant pipe of the outdoor unit; the heating water pipe inlet of the heating heat exchanger is connected to the external heating water inlet pipe, and the heating water pipe outlet of the heating heat exchanger is connected to the external heating water outlet pipe.

[0008] The split-type air-energy heat pump heating and hot water system is characterized in that a fourth temperature sensor is provided at the inlet end of the heating water pipe of the heating heat exchanger, a fifth temperature sensor is provided at the outlet end of the heating water pipe, and an exhaust pressure relief valve group is also provided on the heating water outlet pipe.

[0009] The split-type air energy heat pump heating and hot water system is characterized in that a heating water pump and an expansion tank are provided on the heating water inlet pipe.

[0010] The split-type air-energy heat pump heating and hot water system is characterized in that the outdoor unit includes a compressor, a fin heat exchanger, a four-way valve, a liquid reservoir, a gas-liquid separator and a plate heat exchanger, the outlet of the compression lock machine is connected to the D port of the four-way valve, the C port of the four-way valve is connected to the first stop valve and then to the first port of the refrigerant pipeline, and the liquid reservoir is connected to the second stop valve and then to the second port of the refrigerant pipeline.

[0011] The split-type air energy heat pump heating and hot water system is characterized by including four working modes: heating mode, heating + hot water mode, hot water mode and defrosting mode.

[0012] The split-type air energy heat pump heating and hot water system is characterized in that the refrigerant flow direction is changed by switching the four-way valve to adapt to different working modes.

[0013] The split-type air-energy heat pump heating and hot water system is characterized in that the system includes a control panel or a remote controller for the user to select and control the working mode.

[0014] Beneficial effects: The system achieves high energy efficiency ratio in heating and hot water modes through highly optimized heat exchange design, significantly reduces energy consumption and operating costs; integrated heating and hot water supply functions avoid the need for users to purchase and install other water heaters, save space, and simplify the configuration of household energy equipment; the use of air energy reduces dependence on fossil fuels and greenhouse gas emissions, while the water-electricity separation design improves safety during use; it can automatically adjust system operation according to indoor and outdoor temperatures and user needs, achieving a more energy-saving and personalized comfort experience. The split air-energy heat pump heating and hot water system has heating and hot water functions. In addition to being able to operate the heating and hot water functions independently, it can also operate the heating and hot water functions together. It has multiple uses and can completely replace traditional gas wall-mounted boilers for use, solving the problem of using split air-energy heat pumps and requiring the purchase of additional gas water heaters or electric water heaters to meet the demand for hot water. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the composition diagram of the split air energy heat pump heating and hot water system;

[0016] Figure 2 It is a flow diagram of the heating mode;

[0017] Figure 3 This is a flow diagram for the heating + hot water mode;

[0018] Figure 4 It is a schematic diagram of the flow direction of the hot water mode;

[0019] Figure 5 It is a flow diagram of the defrost mode. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below through the drawings and embodiments.

[0021] Figure 1 It is a composition diagram of a split-type air-energy heat pump heating and hot water system. The system includes an outdoor unit and an indoor unit. The indoor unit is connected to the outdoor unit through a refrigerant pipeline. The indoor unit includes a hot water heat exchanger 8, a hot water tank 7 and a heating heat exchanger 6. One end of the refrigerant channel of the hot water heat exchanger is connected to the first port of the refrigerant pipeline of the outdoor unit, and the other end is connected to one end of the refrigerant channel of the heating heat exchanger. The other end of the refrigerant channel of the heating heat exchanger is connected to the second port of the refrigerant pipeline of the outdoor unit; the heating water pipe inlet of the heating heat exchanger is connected to the external heating water inlet pipe, and the heating water pipe outlet of the heating heat exchanger is connected to the external heating water inlet pipe. The outlet is connected to the external heating water outlet pipe; a fourth temperature sensor is provided at the inlet end of the heating water pipe of the heating heat exchanger, a fifth temperature sensor is provided at the outlet end of the heating water pipe, and an exhaust pressure relief valve group is also provided on the heating water outlet pipe; a heating water pump and an expansion tank are provided on the heating water inlet pipe; the outdoor unit comprises a compressor 9, a fin heat exchanger 1, a four-way valve 2, a liquid reservoir 5, a gas-liquid separator 3 and a plate heat exchanger 4, the outlet of the compression lock machine is connected to the D port of the four-way valve, the C port of the four-way valve is connected to the first stop valve and then to the first port of the refrigerant pipeline, the liquid reservoir is connected to the second stop valve and then to the second port of the refrigerant pipeline.

[0022] The split air energy heat pump heating and hot water system can realize multiple uses in one machine, and can be implemented in multiple operating modes, including: heating mode, heating + hot water mode, hot water mode and defrosting mode. The specific working modes are:

[0023] 1. Heating mode: Figure 2 This is a flow diagram of the heating mode:

[0024] Refrigerant flow in heating mode: The outdoor unit compressor sucks in low-temperature, low-pressure gaseous refrigerant, which is compressed by the compressor and becomes high-temperature, high-pressure gaseous refrigerant. After passing through the D and C ports of the four-way valve, it enters the indoor unit hot water heat exchanger and heating heat exchanger to heat the water, which is condensed into a high-temperature, high-pressure liquid state. After passing through the outdoor unit's liquid storage tank and the first filter, it enters the plate heat exchanger to release heat and become a medium-temperature, high-pressure liquid state. Then it is divided into two paths. The main path enters the main electronic expansion valve and becomes a low-temperature, low-pressure gas-liquid mixed refrigerant. After passing through the second filter, it enters the fin heat exchanger, absorbs the heat of the outdoor air, and is evaporated into a low-temperature, low-pressure gas state. After passing through the E and S ports of the four-way valve, it enters the gas-liquid separator and finally returns to the compressor to enter the next cycle. The auxiliary path enters the auxiliary electronic expansion valve and becomes a medium-temperature, medium-pressure gas-liquid mixed refrigerant. It enters the plate heat exchanger, absorbs the heat of the liquid refrigerant on the other side of the plate heat exchanger, is evaporated into a medium-temperature, medium-pressure gas state, and finally returns to the compressor to enter the next cycle.

[0025] The flow direction of heating water in heating mode is: the indoor unit heating water pump sucks water from the heating end and presses the water into the heating heat exchanger. The water absorbs heat from the refrigerant side in the heating heat exchanger and then comes out of the heating heat exchanger, goes to the heating end to release heat to heat the room, and is finally sucked into the next cycle by the heating water pump.

[0026] 2. Heating + hot water mode, Figure 3 This is a flow diagram of the heating + hot water mode:

[0027] Refrigerant flow in heating + hot water mode: The outdoor unit compressor sucks in low-temperature, low-pressure gaseous refrigerant, which is compressed by the compressor and becomes high-temperature, high-pressure gaseous refrigerant. After passing through the D and C ports of the four-way valve, it enters the indoor unit hot water heat exchanger and heating heat exchanger to heat the water, which is condensed into a high-temperature, high-pressure liquid. After passing through the outdoor unit's liquid storage tank and the first filter, it enters the plate heat exchanger to release heat and become a medium-temperature, high-pressure liquid. Then it is divided into two routes. The main route enters the main electronic expansion valve and becomes a low-temperature, low-pressure gas-liquid mixed refrigerant. After passing through the second filter, it enters the fin heat exchanger, absorbs the heat of the outdoor air, and is evaporated into a low-temperature, low-pressure gas. After passing through the E and S ports of the four-way valve, it enters the gas-liquid separator and finally returns to the compressor to enter the next cycle. The auxiliary route enters the auxiliary electronic expansion valve and becomes a medium-temperature, medium-pressure gas-liquid mixed refrigerant. It enters the plate heat exchanger, absorbs the heat of the liquid refrigerant on the other side of the plate heat exchanger, is evaporated into a medium-temperature, medium-pressure gas, and finally returns to the compressor to enter the next cycle.

[0028] The flow direction of heating water in the heating + hot water mode: the indoor unit heating water pump sucks water from the heating end and presses the water into the heating heat exchanger. The water absorbs heat from the refrigerant side in the heating heat exchanger and then comes out of the heating heat exchanger, goes to the heating end to release heat to heat the room, and is finally sucked into the next cycle by the heating water pump.

[0029] Hot water flow direction in heating + hot water mode: the indoor unit hot water pump draws water from the hot water tank and presses the water into the hot water heat exchanger. The water absorbs heat from the refrigerant side in the hot water heat exchanger and then flows out of the hot water heat exchanger into the hot water tank. This cycle is repeated to heat the water in the hot water tank.

[0030] 3. Hot water mode, Figure 4 This is a flow diagram of the hot water mode:

[0031] Refrigerant flow in hot water mode: The outdoor unit compressor sucks in low-temperature, low-pressure gaseous refrigerant, which is compressed by the compressor and becomes high-temperature, high-pressure gaseous refrigerant. After passing through the D and C ports of the four-way valve, it enters the indoor unit hot water heat exchanger and heating heat exchanger to heat the water, which is condensed into a high-temperature, high-pressure liquid. After passing through the outdoor unit's liquid storage tank and the first filter, it enters the plate heat exchanger to release heat and become a medium-temperature, high-pressure liquid. Then it is divided into two routes. The main route enters the main electronic expansion valve and becomes a low-temperature, low-pressure gas-liquid mixed refrigerant. After passing through the second filter, it enters the fin heat exchanger, absorbs the heat of the outdoor air, and is evaporated into a low-temperature, low-pressure gas. After passing through the E and S ports of the four-way valve, it enters the gas-liquid separator and finally returns to the compressor to enter the next cycle. The auxiliary route enters the auxiliary electronic expansion valve and becomes a medium-temperature, medium-pressure gas-liquid mixed refrigerant. It enters the plate heat exchanger, absorbs the heat of the liquid refrigerant on the other side of the plate heat exchanger, is evaporated into a medium-temperature, medium-pressure gas, and finally returns to the compressor to enter the next cycle.

[0032] Hot water flow direction in hot water mode: the indoor unit hot water pump draws water from the hot water tank and presses the water into the hot water heat exchanger. The water absorbs heat from the refrigerant side in the hot water heat exchanger and then flows out of the hot water heat exchanger into the hot water tank. This cycle is repeated to heat the water in the hot water tank.

[0033] 4. Defrost mode, Figure 5 This is the flow diagram of the defrost mode:

[0034] Refrigerant flow in defrost mode: The outdoor unit compressor sucks in low-temperature and low-pressure gaseous refrigerant, which is compressed by the compressor and becomes a high-temperature and high-pressure gas. It passes through the D and E ports of the four-way valve and enters the fin heat exchanger to heat the air. It is condensed into a high-temperature and high-pressure liquid. It passes through the second filter and the main electronic expansion valve and becomes a low-temperature and low-pressure gas-liquid mixed refrigerant. It enters the plate heat exchanger, the first filter, and the liquid storage tank, and enters the indoor unit heating heat exchanger and the hot water heat exchanger to absorb the heat of the water. It is evaporated into a low-temperature and low-pressure gas. It passes through the C and S ports of the four-way valve and enters the gas-liquid separator, and finally returns to the compressor to enter the next cycle.

[0035] The flow direction of heating water in defrost mode: the indoor unit heating water pump sucks water from the heating end and presses the water into the heating heat exchanger. After the water absorbs heat on the refrigerant side in the heating heat exchanger, it comes out of the heating heat exchanger and returns to the heating end to enter the next cycle.

[0036] Hot water flow direction in defrost mode: The indoor unit hot water pump draws water from the hot water tank and presses the water into the hot water heat exchanger. The water absorbs heat from the refrigerant side in the hot water heat exchanger and then flows out of the hot water heat exchanger and returns to the hot water tank to enter the next cycle.

[0037] The above disclosure is only one embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understandably implement all or part of the processes of the above embodiment, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the utility model.

Claims

1. A split air energy heat pump heating and hot water system, comprising an outdoor unit and an indoor unit, wherein the indoor unit and the outdoor unit are connected via a refrigerant pipeline, characterized in that: The indoor unit includes a hot water heat exchanger, a hot water tank and a heating heat exchanger. One end of the refrigerant channel of the hot water heat exchanger is connected to the first port of the refrigerant pipe of the outdoor unit, and the other end is connected to one end of the refrigerant channel of the heating heat exchanger. The other end of the refrigerant channel of the heating heat exchanger is connected to the second port of the refrigerant pipe of the outdoor unit; the heating water pipe inlet of the heating heat exchanger is connected to the external heating water inlet pipe, and the heating water pipe outlet of the heating heat exchanger is connected to the external heating water outlet pipe.

2. The split air energy heat pump heating and hot water system according to claim 1 is characterized in that A fourth temperature sensor is provided at the inlet end of the heating water pipe of the heating heat exchanger, a fifth temperature sensor is provided at the outlet end of the heating water pipe, and an exhaust pressure relief valve group is also provided on the heating water outlet pipe.

3. The split air energy heat pump heating and hot water system according to claim 2, characterized in that: A heating water pump and an expansion tank are arranged on the heating water inlet pipe.

4. The split air energy heat pump heating and hot water system according to claim 3 is characterized in that: The outdoor unit includes a compressor, a fin heat exchanger, a four-way valve, a liquid storage device, a gas-liquid separator and a plate heat exchanger. The outlet of the compression lock machine is connected to the D port of the four-way valve, the C port of the four-way valve is connected to the first stop valve and then to the first port of the refrigerant pipeline, and the liquid storage device is connected to the second stop valve and then to the second port of the refrigerant pipeline.

5. The split air energy heat pump heating and hot water system according to claim 4 is characterized in that It includes four working modes: heating mode, heating + hot water mode, hot water mode and defrost mode.

6. The split air energy heat pump heating and hot water system according to claim 5, characterized in that: The refrigerant flow direction is changed by switching the four-way valve to adapt to different working modes.

7. The split air energy heat pump heating and hot water system according to claim 6, characterized in that: The system includes a control panel or a remote controller for users to select and control the working mode.

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