Heat pump air-conditioning system with heat recovery and dehumidification functions

Abstract

A heat pump air conditioning system with heat recovery and dehumidification functions comprises a heat pump main machine, a buffer water tank, a firewood stove, a stove water heat exchanger arranged in the stove, a heat preservation water tank, a water distribution and collection device, a cold / warm tail end, an electric heater, a first water pump, a second water pump and a third water pump, and the electric heater is arranged in the buffer water tank; the main water outlet pipe and the main water return pipe are communicated with the buffer water tank; the cold / warm water supply pipe, the water segregator, the cold / warm tail end, the water collector, the cold / warm water return pipe and the buffer water tank form a cold / warm circulation loop; the second water pump is arranged on the cold / warm water supply pipe; the stove water heat exchanger and the heat preservation water tank form a heating circulation loop; the third water pump is arranged on a water return pipe of the heating circulation loop; the heat preservation water tank communicates with the cold / warm water supply pipe through a water inlet pipe and a water outlet pipe. The heat preservation water tank is provided with a water supplementing pipe, a water supplementing valve and a domestic water output pipe. Cooking bench heat energy during cooking is fully utilized; in extremely cold weather, the electric heater is used for increasing the temperature.

Description

Technical Field

[0001] This utility model relates to an air source heat pump heating and cooling system. Background Technology

[0002] The existing technology, Chinese patent 201310323130.4, discloses a solar-heat-pump combined heating and cooling system and method. This system includes a solar collector station, a dual-source heat pump unit, and indoor heating and cooling terminals. The solar collector station includes solar collectors and a hot water storage tank. The hot water storage tank is connected to a heat pump circulation pump and the solar collectors sequentially via pipes, and the pipes return from the solar collectors to the hot water storage tank. The dual-source heat pump unit includes an air-source heat pump unit and a water-source heat pump unit. The dual-source heat pump unit is equipped with an inlet, an outlet, an air conditioning outlet, and an air conditioning return outlet. The inlet is connected to the heat pump circulation pump and the hot water storage tank sequentially via pipes, the outlet is connected to the hot water storage tank via pipes, and the air conditioning outlet and air conditioning return outlet are connected to the indoor heating and cooling terminals. The problems are: high cost due to the use of a dual-source heat pump unit and a solar collector station; and the need to increase power output mainly during extremely cold winter weather. Utility Model Content

[0003] The purpose of this invention is to provide a heat pump air conditioning system with heat recovery and dehumidification, which features the use of heat energy during cooking and the addition of a separate electric heater for warming.

[0004] This utility model is implemented as follows: a heat pump air conditioning system with heat recovery and dehumidification, characterized in that it includes a heat pump main unit, a buffer water tank, a wood-fired stove, a stove-water heat exchanger installed inside the stove, an insulated water tank, a water distribution unit, cold / heating terminals, an electric heater, a first water pump, a second water pump, and a third water pump.

[0005] The heat pump unit includes a water-side heat exchanger, which includes a main outlet pipe and a main return pipe.

[0006] The water distribution manifold includes a water distributor and a water collector.

[0007] The electric heater is located inside the buffer water tank; the main outlet pipe and the main return pipe are connected to the buffer water tank, and the first water pump is located on the main return pipe; the cold / heating water supply pipe, the distributor, the cold / heating terminal, the collector, the cold / heating return pipe, and the buffer water tank constitute a cold / heating circulation loop, and the second water pump is located on the cold / heating water supply pipe; the stove water heat exchanger and the insulated water tank constitute a heating circulation loop, and the third water pump is located on the return pipe of the heating circulation loop; the insulated water tank is connected to the cold / heating water supply pipe through the inlet pipe and the outlet pipe; the insulated water tank is equipped with a water replenishment pipe, a water replenishment valve, and a domestic water output pipe.

[0008] The aforementioned heat pump air conditioning system with heat recovery and dehumidification is characterized in that it further includes a first switching valve, a second switching valve, and a third switching valve.

[0009] The first switch valve is installed on the cold / heated water supply pipe, and the second and third switch valves are installed on the inlet and outlet pipes, respectively. The inlet and outlet pipes are connected to the cold / heated water supply pipes at the inlet and outlet ends of the first switch valve, respectively, to realize water circuit switching.

[0010] The heat pump air conditioning system with heat recovery and dehumidification is characterized in that a first water filter is provided on the main return water pipe between the first water pump and the buffer water tank.

[0011] The heat pump air conditioning system with heat recovery and dehumidification is characterized in that the buffer water tank is equipped with a pressure relief valve and a first drain valve.

[0012] The insulated water tank is equipped with a second drain valve.

[0013] The special feature of the heat pump air conditioning system with heat recovery and dehumidification is that a second water filter is provided on the pipe at the outlet of the second water pump.

[0014] The heat pump air conditioning system with heat recovery and dehumidification is characterized in that: the cooling / heating terminal includes underfloor heating pipes or radiators and a floor cooler;

[0015] The floor cooler converts humidity, cooling, and air heating functions.

[0016] This utility model discloses a heat pump air conditioning system with heat recovery and dehumidification. Due to this structure, it makes full use of the heat energy of the stove during cooking; and in extremely cold weather, it uses an electric heater to increase the temperature. Attached Figure Description

[0017] Figure 1 This is the front view of this utility model. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figure 1 As shown, a heat pump air conditioning system with heat recovery and dehumidification includes a heat pump main unit 1, a buffer water tank 2, a wood-burning stove 3, a stove water heat exchanger (not shown) installed inside the stove, an insulated water tank 4, a water distribution manifold 5, a cold / heating terminal 6, an electric heater 7, a first water pump 81, a second water pump 82, and a third water pump 83.

[0021] The heat pump unit 1 includes a water-side heat exchanger, which includes a main outlet pipe 1A and a main return pipe 1B.

[0022] The water distribution manifold 5 includes a water distributor 51 and a water collector 52; it is a known technology, and the use of the water distribution manifold is a known technology.

[0023] An electric heater 7 is installed inside a buffer water tank 2; the main outlet pipe 1A and the main return pipe 1B are connected to the buffer water tank 2, and the first water pump 81 is installed on the main return pipe 1B; the cold / heating water supply pipe, the water distributor, the cold / heating terminal 6, the water collector, the cold / heating return pipe, and the buffer water tank 2 constitute a cold / heating circulation loop, and the second water pump 82 is installed on the cold / heating water supply pipe; the stove water heat exchanger and the insulated water tank 4 constitute a heating circulation loop, and the third water pump 83 is installed on the return pipe of the heating circulation loop; the insulated water tank 4 is connected to the cold / heating water supply pipe through an inlet pipe and an outlet pipe; the insulated water tank 4 is equipped with a water supply pipe, a water supply valve, and a domestic water output pipe.

[0024] As a further improvement of this utility model, it also includes a first switching valve 91, a second switching valve 92, and a third switching valve 93.

[0025] The first switch valve 91 is installed on the cold / heated water supply pipe, and the second switch valve 92 and the third switch valve 93 are installed on the inlet pipe and the outlet pipe, respectively. The inlet pipe and the outlet pipe are connected to the cold / heated water supply pipe at the inlet end and the outlet end of the first switch valve 91, respectively, to realize water circuit switching.

[0026] As a further improvement of this utility model: a first water filter 101 is provided on the main return water pipe 1B between the first water pump 81 and the buffer water tank 2.

[0027] The buffer tank 2 is equipped with a pressure valve 21 and a first drain valve 22;

[0028] The insulated water tank 4 is equipped with a second drain valve 41.

[0029] As a further improvement of this utility model: a second water filter 102 is provided on the pipeline at the outlet end of the second water pump 82.

[0030] The cooling / heating terminal 6 includes underfloor heating pipes 61 or radiators 62 and a floor cooler 63; the floor cooler includes a casing, a compressor, a water-side heat exchanger, an indoor evaporator, a fan, and a drip tray; the water-side heat exchanger of the floor cooler is connected to a water distributor and a water collector; this has been disclosed in Chinese Patent 202110943456.1, entitled "A Heat Pump Air Conditioner with Dehumidification Function".

[0031] During cooling, indoor air is condensed by the indoor evaporator to achieve dehumidification;

[0032] When heating, indoor air releases heat through the indoor evaporator, raising the air temperature and promoting indoor air circulation.

[0033] When using this utility model,

[0034] (I) Low-temperature air source heat pump air conditioning unit heating system: When the air source heat pump is used for heating alone, the first switch valve 91 is open, and the second switch valve 92 and the third switch valve 93 are closed; the heat pump unit 1 is working, the first water pump 81 is working, and the water-side heat exchanger circulates the water in the heating buffer tank; at the same time, the second water pump 82 is working, and hot water is input into the cold / heat terminal 6. The cold / heat terminal 6 exchanges heat with the indoor air to achieve indoor temperature rise;

[0035] (II) Heat Recovery Auxiliary Heating System for Wood-fired Stove 3: When the third water pump 93 operates, the stove water heat exchanger and insulated water tank 4 of the wood-fired stove 3 circulate and heat the water, raising the water temperature in the insulated water tank 4. The hot water can then be used to assist the low-temperature air-source heat pump air conditioning unit in heating, quickly raising the indoor temperature so that the main unit reaches the set temperature and stops, thereby reducing the main unit's power consumption. Furthermore, the stored hot water can be used for domestic hot water (bathing, washing hands, washing vegetables, etc.), avoiding the use of an electric water heater and thus saving electricity. During heating, the first switch valve 91 is closed, and the second switch valve 91 and the third switch valve 93 are opened to release the hot water stored in the stove heat recovery system for room heating. The floor-cooled unit 63 can also provide heating.

[0036] (III) Air source heat pump air conditioning unit cooling system: In summer, when the air source heat pump air conditioner is cooling, the heat pump unit 1 is turned on and the water in the buffer water tank 2 is continuously cooled by the circulating water pump 1. The second water pump 92 works and outputs the cold water from the buffer water tank 2 to the cold / warm terminal for heat exchange, thereby lowering the room temperature. The underfloor heating pipe radiant cooling method is used to achieve a windless feeling and bring people a cave-like comfort. When cooling, the first switch valve 91 is opened and the second switch valve 92 and the third switch valve 93 are closed to cut off the hot water from the stove circulating heat preservation water tank 4. At this time, the hot water in the stove circulating heat preservation water tank 4 is mainly used for bathing.

[0037] (iv) Floor-cooled refrigeration and dehumidification system: Floor-cooled units replace ceiling-mounted fan coil units for cooling and dehumidification. The floor-cooled units are installed against the wall like radiators. The compressor condenser inside the floor-cooled unit uses cold water in the pipes for water-to-water heat exchange to achieve condensation. The indoor evaporator blows out cold air for air heat exchange to cool the room. At the same time, the floor-cooled unit reduces the humidity in the room and avoids condensation on the floor due to the cooling of the underfloor heating pipes, thus achieving a dehumidification effect. Because the floor-cooled unit does not require ceiling installation or the laying of ceiling pipes, the engineering installation cost is low and maintenance is convenient.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A heat pump air conditioning system with heat recovery and dehumidification, characterized in that: It includes a heat pump unit, a buffer water tank, a wood-fired stove, a stove-water heat exchanger installed inside the stove, an insulated water tank, a water distribution unit, cold / heating terminals, an electric heater, a first water pump, a second water pump, and a third water pump. The heat pump unit includes a water-side heat exchanger, which includes a main outlet pipe and a main return pipe. The water distribution manifold includes a water distributor and a water collector. The electric heater is located inside the buffer water tank; the main outlet pipe and the main return pipe are connected to the buffer water tank, and the first water pump is located on the main return pipe; the cold / heating water supply pipe, the distributor, the cold / heating terminal, the collector, the cold / heating return pipe, and the buffer water tank constitute a cold / heating circulation loop, and the second water pump is located on the cold / heating water supply pipe; the stove water heat exchanger and the insulated water tank constitute a heating circulation loop, and the third water pump is located on the return pipe of the heating circulation loop; the insulated water tank is connected to the cold / heating water supply pipe through the inlet pipe and the outlet pipe; the insulated water tank is equipped with a water replenishment pipe, a water replenishment valve, and a domestic water output pipe.

2. The air conditioning system with heat recovery and dehumidification heat pump according to claim 1, characterized in that: It also includes a first switching valve, a second switching valve, and a third switching valve. The first switch valve is installed on the cold / heated water supply pipe, and the second and third switch valves are installed on the inlet and outlet pipes, respectively. The inlet and outlet pipes are connected to the cold / heated water supply pipes at the inlet and outlet ends of the first switch valve, respectively, to realize water circuit switching.

3. The air conditioning system with heat recovery and dehumidification heat pump according to claim 1, characterized in that: A first water filter is installed on the main return water pipe between the first water pump and the buffer water tank.

4. The air conditioning system with heat recovery and dehumidification heat pump according to claim 1, characterized in that: The buffer tank is equipped with a pressure relief valve and a first drain valve; The insulated water tank is equipped with a second drain valve.

5. The air conditioning system with heat recovery and dehumidification heat pump according to claim 1, characterized in that: A second water filter is installed on the pipeline at the outlet of the second water pump.

6. A heat pump air conditioning system with heat recovery and dehumidification according to claim 1, 2, 3, 4 or 5, characterized in that: The cooling / heating terminals include underfloor heating pipes or radiators and underfloor cooling units; The floor cooler converts humidity, cooling, and air heating functions.

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