A noise-reducing air source heat pump

Abstract

An air-source heat pump with noise reduction includes a compressor, a four-way valve, a water-side heat exchanger, an electronic expansion valve, a finned heat exchanger, and a liquid-distribution noise reduction device. The finned heat exchanger includes fins and several heat exchange coils, one end of which is connected in parallel to a gas collecting pipe. The liquid-distribution noise reduction device includes a main liquid pipe, a distributor head, several distributor capillaries, and a silencer cylinder. The distributor head is located inside the silencer cylinder. The main liquid pipe is connected to the main liquid orifice, and the distributor capillaries are connected to the distributor head. The silencer cylinder has a first gas pipe and a second gas pipe. The main liquid pipe is connected to the electronic expansion valve, the distributor capillaries are connected to the inlet end of the heat exchange coils, the heat exchange coils are connected in parallel to the gas collecting pipe and connected to the first gas pipe, and the second gas pipe is connected to the four-way valve and the compressor's return gas port. The distributor head is located inside the silencer cylinder and is immersed in liquid or gas, effectively reducing the noise generated by refrigerant diversion and throttling.

Description

Technical Field

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

[0002] The existing technology, Chinese patent 202310331601.X, describes a variable flow path evaporator and heat pump system. This evaporator includes a gas collecting pipe, a distributor, a tee, and refrigerant flow paths. Multiple refrigerant flow paths are connected in parallel between the gas collecting pipe and the distributor. The tee is connected to the evaporator's inlet pipe, the distributor, and one end of the gas collecting pipe. The end of the gas collecting pipe away from the tee is connected to the evaporator's outlet pipe. A first one-way valve is installed between the tee and the distributor, and a second one-way valve is installed on the gas collecting pipe. At least one refrigerant flow path is installed on each side of the second one-way valve. This evaporator can automatically change its flow path configuration when entering heating or cooling mode, adjusting the number and flow of flow paths to match the current mode, thereby effectively improving the energy efficiency of the evaporator and heat pump system. The problem is that the distributor generates significant noise during the process of liquid entering through the main liquid pipe and flowing out through the distribution capillary. Utility Model Content

[0003] The purpose of this invention is to provide an air source heat pump with noise reduction, which has the characteristic of low noise when operating in liquid separation mode.

[0004] This invention is achieved as follows: an air-source heat pump with noise reduction, characterized in that it includes a compressor, a four-way valve, a water-side heat exchanger, an electronic expansion valve, a finned heat exchanger, and a liquid-liquid separation noise reduction device.

[0005] A finned heat exchanger includes fins and several heat exchange coils, one end of which is connected in parallel to a gas collecting pipe.

[0006] The liquid separation silencing device includes a main liquid pipe, a liquid separator head, several liquid separator capillaries, and a silencing cylinder. The liquid separator head is located inside the silencing cylinder. The main liquid pipe is connected to the main liquid orifice, and the liquid separator capillaries are connected to the liquid separator head. The silencing cylinder is equipped with a first air pipe and a second air pipe.

[0007] The main liquid pipe is connected to the electronic expansion valve, the liquid distribution capillary tube is connected to the inlet end of the heat exchange coil, the heat exchange coil is connected in parallel to the gas collecting pipe and the first gas pipe, and the second gas pipe is connected to the four-way valve and the return gas port of the compressor.

[0008] The air source heat pump with silencer is characterized in that the first air pipe is located at the top of the silencer and the second air pipe is located at the bottom of the silencer.

[0009] The special feature of the air source heat pump with silencer is that the second air pipe is located at the bottom of the circumferential wall of the silencer cylinder.

[0010] This utility model discloses an air source heat pump with a noise reduction function. The liquid distributor is located inside the noise reduction cylinder and is immersed in liquid or gas, which effectively reduces the noise generated by refrigerant diversion and throttling. Attached Figure Description

[0011] Figure 1 This is the front view of this utility model.

[0012] Figure 2 This is a cross-sectional view of the liquid separation and silencing device of this utility model. Detailed Implementation

[0013] 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.

[0014] 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.

[0015] like Figure 1 As shown, an air-source heat pump with silencer includes a compressor 1, a four-way valve 2, a water-side heat exchanger 3, an electronic expansion valve 4, a finned heat exchanger 5, and a liquid-liquid silencing device 6.

[0016] The finned heat exchanger 5 includes fins and several heat exchange coils, with one end of the heat exchange coils connected in parallel to the gas collecting pipe and the other end suspended.

[0017] The liquid separation silencing device 6 includes a main liquid pipe 61, a liquid separation head 62, several liquid separation capillary tubes 63, and a silencing cylinder 64. The liquid separation head 62 is located inside the silencing cylinder 64. The main liquid pipe 61 is connected to the main liquid hole of the liquid separation head 62, and the liquid separation capillary tubes 63 are connected to the liquid separation hole of the liquid separation head 62. The silencing cylinder 64 is provided with a first air pipe 641 and a second air pipe 642.

[0018] The main liquid pipe 61 is connected to the electronic expansion valve 4, the liquid distribution capillary tube 63 is connected to the suspended end of the heat exchange coil, the gas collecting pipe at the parallel end of the heat exchange coil is connected to the first gas pipe 641, and the second gas pipe 642 is connected to the four-way valve 2 and the return gas port of the compressor 1.

[0019] As a further improvement of this utility model: the first air pipe 641 is provided on the top plate of the silencer 64, and the second air pipe 642 is provided at the bottom of the silencer 64;

[0020] The second air pipe 642 is located at the bottom of the circumferential wall of the silencer 64. Because the second air pipe 642 is located at the bottom, all the oil returns to the compressor, preventing oil accumulation.

[0021] When using this utility model, such as Figure 1 As shown, during heating, the exhaust port of compressor 1, the DC terminal of the four-way valve, the refrigerant pipeline of the water-side heat exchanger 3, the electronic expansion valve 4, the main liquid pipe 61, the distributor head 62, and the distributor capillary tube 63 enter the finned heat exchanger. The parallel end of the heat exchange coils of the finned heat exchanger and the first gas pipe 641 enter the silencer 64, and the second gas pipe 642 and the ES terminal of the four-way valve enter the compressor's return port. Because the distributor head is located inside the silencer 64 and the gas surrounds the distributor head, noise is effectively eliminated.

[0022] 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. An air source heat pump with sound attenuation, characterized by: Includes a compressor, four-way valve, water-side heat exchanger, electronic expansion valve, finned heat exchanger, and liquid separator silencer. A finned heat exchanger includes fins and several heat exchange coils, one end of which is connected in parallel to a gas collecting pipe. The liquid separation silencing device includes a main liquid pipe, a liquid separator head, several liquid separator capillaries, and a silencing cylinder. The liquid separator head is located inside the silencing cylinder. The main liquid pipe is connected to the main liquid orifice, and the liquid separator capillaries are connected to the liquid separator head. The silencing cylinder is equipped with a first air pipe and a second air pipe. The main liquid pipe is connected to the electronic expansion valve, the liquid distribution capillary tube is connected to the inlet end of the heat exchange coil, the heat exchange coil is connected in parallel to the gas collecting pipe and the first gas pipe, and the second gas pipe is connected to the four-way valve and the return gas port of the compressor.

2. The air source heat pump with sound attenuation of claim 1, wherein: The first air pipe is located at the top of the silencer, and the second air pipe is located at the bottom of the silencer.

3. The sound attenuated air source heat pump of claim 2 wherein: The second air pipe is located at the bottom of the circumferential wall of the silencer.

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