Double-medium circulating air energy all-in-one machine

Abstract

The utility model discloses a double-medium circulating air energy all-in-one machine which is characterized in that a flash tank and a gas-liquid separator are connected to a compressor, the compressor is connected with a four-way reversing valve, and the four-way reversing valve is respectively connected with an air-cooled heat exchanger and the gas-liquid separator; the four-way reversing valve is further connected with a heating heat exchanger or a fan coil pipeline. Control valve groups are arranged on the heating heat exchanger and the fan coil pipeline; and switching between a heating state and a refrigerating state can be realized through the control valve group. The flash tank is connected with a heating heat exchanger and a fan coil pipeline through a pipeline and a main control valve; and the flash tank is connected with the air-cooled heat exchanger through a pipeline and an auxiliary control valve. Through the structural arrangement, the problems that the air energy heat pump adopts water circulation in a heating state and adopts a refrigerant to be connected with an indoor fan coil and directly adopts the refrigerant to exchange heat in a refrigerating state are solved, the problem that the heating and dehumidification speed is delayed is effectively solved, and the refrigerating and dehumidification speed is higher and stronger.

Description

Technical Field

[0001] The utility model belongs to the technical field of air energy equipment, and particularly relates to a dual-medium circulating air energy integrated machine. Background Art

[0002] As understood by those skilled in the art, existing air energy equipment has refrigeration and heating functions. When performing refrigeration and heating, water medium is usually required for indoor circulation. The current technical problem encountered is that in the refrigeration function state, for this indoor water circulation method, its heat exchange needs to first cool the water through a refrigerant, but the lowest water temperature can only be controlled above ten degrees. During the refrigeration cycle, there is a technical problem of lag in the reaction speed of refrigeration and dehumidification. This lag problem leads to insensitive refrigeration reaction and brings poor comfort to users.

[0003] In view of the above, as a technician in the air energy field, how to improve the system so that when using a refrigerant as the circulating medium, the temperature can be quickly transferred during the refrigeration process without affecting the heating efficiency, and avoid the technical problems of lag in the dehumidification and refrigeration processes. Summary of the Utility Model

[0004] In view of the above-mentioned disadvantages of the prior art, the utility model provides a dual-medium circulating air energy integrated machine. By adopting a novel pipeline design system, it can be directly connected to an external water source during heating to realize the heating process through circulating water. During cooling, it can be connected to an external fan coil unit to transfer heat through a refrigerant, and its cooling efficiency is rapid, timely, and the power is stronger.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A dual-medium circulating air energy integrated machine includes a compressor, a four-way reversing valve, an air-cooled heat exchanger, and a heating heat exchanger; the heating heat exchanger is connected to an external floor heating circulation pipe and a circulation pump;

[0007] A flash tank and a gas-liquid separator are connected to the compressor. The compressor is connected to the four-way reversing valve, and the four-way reversing valve is respectively connected to the air-cooled heat exchanger and the gas-liquid separator; a heating heat exchanger or a fan coil pipeline is also connected to the four-way reversing valve; control valve groups are arranged on both the heating heat exchanger and the fan coil pipeline;

[0008] The flash tank is connected to the heating heat exchanger and the fan coil pipeline through pipelines and a main control valve; the flash tank is connected to the air-cooled heat exchanger through pipelines and a sub-control valve.

[0009] An enthalpy-increasing valve is provided on the flash tank. The flash tank is connected to the compressor body II through the enthalpy-increasing valve, and the flash tank is controlled by the enthalpy-increasing valve to increase the enthalpy of the compressor.

[0010] The described gas-liquid separator is connected to the compressor through the compressor body I, and the gas-liquid separator can guide the separated gas into the compressor.

[0011] The described external floor heating circulation pipe includes a floor heating water inlet pipe and a floor heating water outlet pipe. The floor heating water inlet pipe and the floor heating water outlet pipe are respectively connected to the heating heat exchanger. At least one of a water inlet pressure gauge, a water flow switch, and a water inlet temperature sensor is provided on the floor heating water inlet pipe; at least one of a water outlet pressure gauge and a water outlet temperature sensor is provided on the floor heating water outlet pipe.

[0012] A moisture discharge temperature sensor, a high-pressure pressure switch, and an exhaust pressure gauge are provided between the compressor and the four-way reversing valve.

[0013] The control valve group is an electronic valve, which includes a refrigeration control valve group and a heating control valve group. The refrigeration control valve group includes valve I and valve II; the heating control valve group includes valve III and valve IV.

[0014] The utility model has the following beneficial effects: A flash tank and a gas-liquid separator are connected and arranged on the compressor of the utility model. The compressor is connected to the four-way reversing valve, and the four-way reversing valve is respectively connected to the air-cooled heat exchanger and the gas-liquid separator; a heating heat exchanger or a fan coil pipeline is also connected to the four-way reversing valve; control valve groups are arranged on both the heating heat exchanger and the fan coil pipeline; the conversion between the heating state and the refrigeration state can be realized through the control valve group. The flash tank is connected to the heating heat exchanger and the fan coil pipeline through pipelines and the main control valve; the flash tank is connected to the air-cooled heat exchanger through pipelines and the sub-control valve. Through the above structural settings, the present invention solves the problem that the air source heat pump uses water circulation in the heating state and uses refrigerant to be directly connected to the indoor fan coil for heat exchange in the refrigeration state, effectively solving the problem of lag in heating and dehumidification speed, and making the refrigeration and dehumidification speeds faster and stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present utility model will be further described below with reference to the drawings and embodiments.

[0016] Figure 1 It is a schematic diagram of the heating cycle structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the refrigeration cycle structure of the present utility model;

[0018] In the figure, 1 is a compressor, 11 is compressor tank I, 12 is compressor tank II, 13 is a flash tank, 14 is a gas-liquid separator, 15 is an enthalpy-increasing valve, 16 is a low-pressure pressure switch, 17 is an exhaust temperature sensor, 2 is a heating heat exchanger, 21 is valve I, 22 is valve II, 23 is valve III, 24 is valve IV, 25 is a refrigerant outlet pipe, 26 is a refrigerant inlet pipe, 3 is an external floor heating circulation pipe, 31 is a floor heating water inlet pipe, 32 is a floor heating water outlet pipe, 33 is a circulation pump, 34 is an inlet water pressure gauge, 35 is a water flow switch, 36 is an inlet water temperature sensor, 37 is an outlet water temperature sensor, 38 is an outlet water pressure gauge, 4 is a four-way reversing valve, 41 is a suction pressure gauge, 42 is a suction temperature sensor, 43 is an exhaust pressure gauge, 44 is a high-pressure pressure switch, 5 is an air-cooled heat exchanger, 6 is a main control valve, and 61 is a sub-control valve. Specific Embodiment

[0019] The present invention will be further described through embodiments below. The following description is only for exemplary explanation. Those skilled in the art can make further structural improvements based on the following explanation. The protection scope of this patent shall be subject to the scope recorded in the claims.

[0020] Embodiment 1: Specific Connection Structure

[0021] A dual-medium circulating air energy integrated machine, as Figure 1 、 2 shown, includes a compressor 1, a four-way reversing valve 4, an air-cooled heat exchanger 5, and a heating heat exchanger 2; the heating heat exchanger 2 is connected to an external floor heating circulation pipe 3 and a circulation pump 33.

[0022] The connection details of this dual-medium circulating air energy integrated machine are as follows: Compressor tank I 11 and compressor tank II 12 are provided on the compressor 1. Compressor tank I 11 is connected to the gas-liquid separator 14 through a pipeline, and a low-pressure pressure switch 16 is provided on the pipeline between compressor tank I 11 and the gas-liquid separator 14. Compressor tank II 12 is connected to the flash tank 13 through a pipeline, and an enthalpy-increasing valve 15 is provided on the pipeline between compressor tank II 12 and the flash tank 13.

[0023] The top of the compressor 1 is directly connected to the four-way reversing valve 4, and an exhaust temperature sensor 17, a high-pressure pressure switch 44, and an exhaust pressure gauge 43 are provided on the pipeline between the compressor 1 and the four-way reversing valve 4.

[0024] The described four-way reversing valve 4 is connected to the air-cooled heat exchanger 5; the four-way reversing valve 4 is connected to the gas-liquid separator 14, and a suction pressure gauge 41 and a suction temperature sensor 42 are provided on the connecting pipeline; a heating heat exchanger 2 or a fan coil pipeline is also connected to the four-way reversing valve 4; control valve groups are provided on both the heating heat exchanger 2 and the fan coil pipeline; as shown in the figure, the control valve group includes a refrigeration control valve group and a heating control valve group, the refrigeration control valve group is an electromagnetic valve, which includes valve Ⅰ21 and valve Ⅱ22; the heating control valve group includes valve Ⅲ23 and valve Ⅳ24.

[0025] The described flash tank 13 is connected to the heating heat exchanger 2 and the fan coil pipeline through a pipeline and a main control valve 6; the flash tank 13 is connected to the air-cooled heat exchanger 5 through a pipeline and a sub-control valve 61. Both the main control valve 6 and the sub-control valve 61 are electronic expansion valves.

[0026] An enthalpy-increasing valve 15 is provided on the flash tank 13. Through the enthalpy-increasing valve 15, the flash tank 13 is connected to the compressor tank Ⅱ12, and the flash tank 13 is controlled by the enthalpy-increasing valve 15 to increase the enthalpy of the compressor 1.

[0027] The gas-liquid separator 14 is connected to the compressor 1 through the compressor tank Ⅰ11, and the gas-liquid separator 14 can divert the separated gas into the compressor 1.

[0028] The described external floor heating circulation pipe 3 includes a floor heating water inlet pipe 31 and a floor heating water outlet pipe 32. The floor heating water inlet pipe 31 and the floor heating water outlet pipe 32 are respectively connected to the heating heat exchanger 2. A water inlet pressure gauge 34, a water flow switch 35 and a water inlet temperature sensor 36 are provided on the floor heating water inlet pipe 31, which can detect the water pressure and temperature of the floor heating inlet water and realize switch control at the same time; a water outlet pressure gauge 38 and a water outlet temperature sensor 37 are provided on the floor heating water outlet pipe 32, which can detect the water outlet temperature and water outlet pressure.

[0029] Embodiment 2: Heating state

[0030] As Figure 1 shown, the refrigerant is compressed into a high-temperature and high-pressure gas by the compressor, turns to the left through the four-way reversing valve 4, valve Ⅰ21 and valve Ⅱ22 are opened, valve Ⅲ23 and valve Ⅳ24 are in the closed state, the circulation pump 33 in the external floor heating circulation pipe 3 is opened, and the floor heating water inlet pipe 31 and the floor heating water outlet pipe 32 carry out indoor heating circulation.

[0031] Under the action of the compressor 1, the refrigerant enters the heating heat exchanger 2 and transfers heat to the water in the external floor heating circulation pipe 3. The refrigerant passes through the main control valve 6 and enters the flash tank 13, then enters the sub-control valve 61 through the flash tank 13, enters the air-cooled heat exchanger 5 through the pipeline, and then enters the gas-liquid separator 14 in the four-way reversing valve 4. After passing through the gas-liquid separator 14, it enters the compressor body Ⅰ11. The refrigerant is in the flash tank 13. In the above process, in a low-temperature environment, the gas in the flash tank 13 jets enthalpy to the compressor 1 through the enthalpy-increasing valve 15; the refrigerant forms a low-temperature and low-pressure gas-liquid mixture, enters the air-cooled heat exchanger 5, absorbs heat from the outside, the refrigerant remains a gas-liquid mixture, and is separated into gas and liquid by the gas-liquid separator 14. The gas returns to the compressor 1 to continue the heating cycle. In the above heating cycle process, by directly exchanging heat between the refrigerant and the floor heating water source, the heating efficiency is effectively improved.

[0032] Embodiment 3: Refrigeration state

[0033] As Figure 2 shown, the refrigerant is compressed into a high-temperature and high-pressure gas by the compressor, and turns right through the four-way reversing valve 4. At this time, the valve Ⅰ21 and the valve Ⅱ22 are closed, the valve Ⅲ23 and the valve Ⅳ24 are in the open state, the external floor heating circulation pipe 3 is in the closed state, and the refrigerant outlet pipe 25 and the refrigerant inlet pipe 26 are opened to communicate with the indoor fan coil. The refrigerant inlet pipe 26 introduces the refrigerant, enters the four-way reversing valve 4 through the valve Ⅲ23 and enters the gas-liquid separator 14. Before entering the gas-liquid separator 14, the refrigerant pressure and temperature are controlled by the suction pressure gauge 41 and the suction temperature sensor 42. The refrigerant enters the compressor body Ⅰ11 from the gas-liquid separator 14. Before entering the compressor body Ⅰ11, the on-off control is performed by the low-pressure pressure switch 16, then passes through the compressor 1 and enters the four-way reversing valve 4, enters the air-cooled heat exchanger 5 at the rear through the four-way reversing valve 4, then enters the flash tank 13 through the sub-control valve 61, and enters the refrigerant outlet pipe 25 through the main control valve 6.

[0034] In the above refrigeration process, the refrigerant is compressed into a high-temperature and high-pressure gas by the compressor 1, enters the air-cooled heat exchanger 5 through the four-way reversing valve 4, transfers the heat to the outside, the refrigerant becomes a gas-liquid mixture through the sub-control valve 61, enters the flash tank 13 and becomes a low-temperature and low-pressure gas-liquid mixture, passes through the main control valve 6 to be depressurized and throttled into a low-temperature liquid, enters the indoor fan coil through the valve Ⅳ24, absorbs heat from the room, the refrigerant is a gas-liquid mixture, after being separated into gas and liquid by the gas-liquid separator 14, the gas returns to the compressor 1 to continue the heating cycle.

[0035] With the above structural settings, the utility model realizes the use of water circulation in the heating state of the air-source heat pump, and in the cooling state, the refrigerant is connected to the external fan coil unit, and heat exchange is directly carried out using the refrigerant, effectively solving the problem of lag in heating and dehumidification speed, and making the cooling and dehumidification speeds faster and stronger.

Claims

1. A dual-medium circulation air energy integrated machine, characterized in that: It includes a compressor, a four-way reversing valve, an air-cooling heat exchanger and a heating heat exchanger; the heating heat exchanger is connected to an external floor heating circulation pipe and a circulation pump; The compressor is connected to a flash tank and a gas-liquid separator, and the compressor is connected to a four-way reversing valve, which is respectively connected to an air-cooled heat exchanger and a gas-liquid separator; the four-way reversing valve is also connected to a heating heat exchanger or a fan coil pipeline; the heating heat exchanger and the fan coil pipeline are both provided with a control valve group; The flash tank is connected to the heating heat exchanger and the fan coil pipeline through pipelines and a main control valve; the flash tank is connected to the air-cooled heat exchanger through pipelines and a secondary control valve.

2. A dual-medium circulation air energy integrated machine as claimed in claim 1, characterized in that: The flash tank is provided with an enthalpy increasing valve, through which the flash tank is connected to the compressor tank body II.

3. A dual-medium circulation air energy integrated machine as claimed in claim 1, characterized in that: The gas-liquid separator is connected to the compressor via the compressor tank body I.

4. A dual-medium circulation air energy integrated machine as claimed in claim 1, characterized in that: The external floor heating circulation pipe includes a floor heating water inlet pipe and a floor heating water outlet pipe, which are respectively connected to the heating heat exchanger. The floor heating water inlet pipe is provided with at least one of a water inlet pressure gauge, a water flow switch and a water inlet temperature sensor; the floor heating water outlet pipe is provided with at least one of a water outlet pressure gauge and a water outlet temperature sensor.

5. A dual-medium circulation air energy integrated machine as claimed in claim 1, characterized in that: A dehumidification temperature sensor, a high-pressure switch and an exhaust pressure gauge are arranged between the compressor and the four-way reversing valve.

6. A dual-medium circulation air energy integrated machine as claimed in claim 1, characterized in that: The control valve group is an electronic valve, which includes a cooling control valve group and a heating control valve group. The cooling control valve group includes valve I and valve II; the heating control valve group includes valve III and valve IV.

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