An air-source-water-source two-stage coupled heat pump unit

By designing a detection mechanism in the heat pump unit to detect the water temperature and cleaning the gas-liquid separator in real time, the problems of difficulty in detecting water temperature in the heat pump unit and the difficulty in cleaning the gas-liquid separator in the heat pump unit are solved, and more efficient energy utilization and equipment maintenance are achieved.

CN222747517UActive Publication Date: 2025-04-11HEILONGJIANG YENENG THERMAL POWER CO LTD
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Patent Information

Application Number
CN202420704662.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2025-04-11
Estimated Expiration
2034-04-08

AI Technical Summary

Technical Problem

It is difficult for existing heat pump units to detect water temperature in real time, resulting in excessive heating or excessive cooling of water, resulting in waste of energy, and the gas-liquid separator is difficult to clean, making it prone to clogging or accumulation, reducing the energy efficiency of the heat pump system.

Method used

A two-stage coupled heat pump unit for air source water source is designed. The detection mechanism uses a detection mechanism to drive the temperature sensor to move through the eight-character slide chute and sliding rod to detect the liquid temperature in the heat exchanger in real time to prevent excessive changes in the water temperature. At the same time, a cleaning mechanism is set up to drive the scraper ring to clean the inside of the gas-liquid separator through the annular block to prevent clogging and accumulation.

Benefits of technology

By real-time detection of water temperature, excessive water heating or cooling is avoided, energy waste is reduced, equipment life is extended and operational costs are reduced. At the same time, the cleaning mechanism effectively prevents the gas-liquid separator from being blocked and improves the energy efficiency of the heat pump system.

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Abstract

The utility model discloses an air source and water source two-stage coupled heat pump unit, which relates to the relevant field of heat pump machines, including a base plate, a control end, a heat pump unit box, a connecting pipe, a heat exchanger, a detection mechanism, a first delivery pipe, a liquid storage tank, a filter, an expansion valve, an evaporator, a second delivery pipe, a gas-liquid separator, a cleaning mechanism and a compressor. The left end of the top of the base plate is fixedly connected with the control end, the right end of the top of the base plate is fixedly connected with the heat pump unit box, the upper and lower sides of the right end of the heat pump unit box are fixedly connected with connecting pipes, the right end of the heat pump unit box is fixedly connected with a heat exchanger, and a detection mechanism is provided. The temperature sensor is driven to move through the cooperation of an eight-shaped slide groove and a first sliding rod, and the temperature of the heated liquid in the heat exchanger is detected to prevent the phenomenon of overheating or overcooling of water, resulting in unnecessary energy waste, while preventing the increase of energy consumption of the unit, extending the life of the equipment, and reducing the operating cost.
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Description

Technical Field

[0001] The utility model relates to the relevant field of heat pumps, in particular to an air-source-water-source two-stage coupled heat pump unit. Background Art

[0002] Heat pump units are a very mature technology and are commonly used in the fields of air conditioning and heat pump water heaters. Heat pump units generally include a compressor, a throttling element and two heat exchangers (evaporator and condenser). The refrigerant circulates under the action of the compressor, the evaporator absorbs heat and the condenser releases heat.

[0003] The prior art finds it difficult to detect water temperature when using a heat pump unit, which may result in overheating or overcooling of the water, causing unnecessary energy waste and increased energy consumption of the unit, shortening equipment life and increasing operating costs. In addition, when using a gas-liquid separator, some equipment finds it difficult to clean the inner wall of the gas-liquid separator, which may cause blockage or accumulation inside the gas-liquid separator, thereby causing additional resistance in the gas-liquid separator, thereby reducing the overall energy efficiency of the heat pump system. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned deficiencies, the utility model provides an air source and water source two-stage coupled heat pump unit.

[0005] The utility model is implemented in this way, constructing an air source and water source two-stage coupled heat pump unit, the device includes a bottom plate, the left end of the top of the bottom plate is fixedly connected to a control end, the right end of the top of the bottom plate is fixedly connected to a heat pump unit box, the upper and lower sides of the right end of the heat pump unit box are fixedly connected to connecting pipes, the right end of the heat pump unit box is fixedly connected to a heat exchanger, the top of the heat exchanger is fixedly connected to a detection mechanism, the lower left end of the pipeline in the heat exchanger is fixedly connected to a first delivery pipe, and the first delivery pipe is composed of four groups of pipes, and the right end of the first delivery pipe is fixed between the two groups of pipes A liquid storage tank is connected, a filter is fixedly connected between the two groups of pipes at the center of the first delivery pipe, the two groups of pipes at the left end of the first delivery pipe are fixedly connected to the air inlet of the expansion valve, the left end of the branch pipe at the left end of the first delivery pipe is fixedly connected to the pipeline in the evaporator, the upper right end of the pipeline in the evaporator is fixedly connected to the second delivery pipe, and the second delivery pipe is composed of three groups of pipes, a gas-liquid separator is fixedly connected between the two groups of pipes at the left end of the second delivery pipe, a cleaning mechanism is slidably connected in the gas-liquid separator, and a compressor is fixedly connected between the two groups of pipes at the right end of the second delivery pipe;

[0006] The detection mechanism includes a fixed plate, which is fixedly connected to the top of the heat exchanger; a motor, which is fixedly connected to the left end of the fixed plate; a first turntable, which is fixedly connected to the output shaft at the right end of the motor; an eight-shaped slide groove, which is provided at the right end of the first turntable; and a first sliding block, which is slidably connected to the first sliding block in the eight-shaped slide groove.

[0007] Preferably, the detection mechanism further includes a first sliding rod, to which the right end of the first sliding block is fixedly connected; a temperature sensor, to which the bottom of the first sliding rod is fixedly connected, and the temperature sensor is electrically connected to an external display screen.

[0008] Preferably, the cleaning mechanism includes a fixed rod, which is fixedly connected to the rear end of the heat pump unit box; a mounting rod, which is fixedly connected to the mounting rod at the front end of the fixed rod; a second sliding rod, which is slidably connected to the second sliding rod inside the mounting rod; a gear toothed plate assembly, which is fixedly connected to the top of the second sliding rod; a second turntable, which is fixedly connected to the second turntable at the front end of the gear toothed plate assembly via a gear rod; an annular block, which is fixedly connected to the front end of the second turntable; and a second sliding block, which is slidably connected to the second sliding block on the outer wall of the annular block.

[0009] Preferably, the cleaning mechanism also includes a moving rod, to which the front end of the second sliding block is fixedly connected; a scraper ring, to which the top of the moving rod is fixedly connected; and an electromagnetic spring, to which the bottom inside the mounting rod is fixedly connected; wherein the top of the electromagnetic spring is fixedly connected to the bottom of the second sliding rod, and the electromagnetic spring is electrically connected to an external current output device.

[0010] Preferably, the left end of the first turntable is rotatably connected to the right end of the fixed plate, and the first sliding rod passes through the right end of the top of the heat exchanger and is slidably connected to the inside thereof.

[0011] Preferably, the left end of the connecting pipe is fixedly connected to the right end of the heat exchanger, and the liquid storage tank, filter, evaporator, gas-liquid separator and compressor are all fixedly connected to the inner wall of the heat pump unit box.

[0012] Preferably, the annular block is arranged in a spiral shape, the moving rod passes through the bottom of the gas-liquid separator and is slidably connected to the inside thereof, and a scraper ring is slidably connected inside the gas-liquid separator.

[0013] The utility model has the following advantages: The utility model provides an air-source-water-source two-stage coupled heat pump unit through improvement, which has the following improvements compared with the same type of equipment:

[0014] The utility model discloses an air source and water source two-stage coupled heat pump unit, which, by setting up a detection mechanism, drives the temperature sensor to move through the cooperation of the figure-eight slide groove and the first sliding rod, and performs temperature detection on the heating liquid in the heat exchanger, so as to prevent the phenomenon of overheating or overcooling of water and cause unnecessary energy waste, and at the same time prevent the energy consumption of the unit from increasing, extend the life of the equipment and reduce the operating cost.

[0015] The utility model discloses an air source and water source two-stage coupled heat pump unit, which is provided with a cleaning mechanism. The spiral setting of the annular block drives the scraper ring to scrape the inside of the gas-liquid separator, so as to prevent blockage or accumulation inside the gas-liquid separator, thereby causing additional resistance in the gas-liquid separator, thereby reducing the overall energy efficiency of the heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the heat pump unit box of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the heat pump unit box of the utility model from the front view;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the detection mechanism of the utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the cleaning mechanism of the utility model;

[0020] Figure 5 This utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Among them: bottom plate-1, control end-2, heat pump unit box-3, connecting pipe-4, heat exchanger-5, detection mechanism-6, fixed plate-61, motor-62, first turntable-63, eight-shaped slide groove-64, first sliding block-65, first sliding rod-66, temperature sensor-67, first delivery pipe-7, liquid storage tank-8, filter-9, expansion valve-10, evaporator-11, second delivery pipe-12, gas-liquid separator-13, cleaning mechanism-14, fixed rod-141, mounting rod-142, second sliding rod-143, gear tooth plate assembly-144, second turntable-145, annular block-146, second sliding block-147, moving rod-148, scraper ring-149, electromagnetic spring-1410, compressor-15. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1~Figure 5The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Embodiment 1:

[0025] See also Figure 1~Figure 3The utility model is an air source and water source two-stage coupling heat pump unit, comprising a bottom plate 1, a control end 2 is fixedly connected to the left end of the top of the bottom plate 1, a heat pump unit box 3 is fixedly connected to the right end of the top of the bottom plate 1, and the upper and lower sides of the right end of the heat pump unit box 3 are fixedly connected to connecting pipes 4, a heat exchanger 5 is fixedly connected to the right end of the heat pump unit box 3, a detection mechanism 6 is fixedly connected to the top of the heat exchanger 5, a first delivery pipe 7 is fixedly connected to the lower left end of the pipeline in the heat exchanger 5, and the first delivery pipe 7 is composed of four groups of pipes, a liquid storage tank 8 is fixedly connected between the two groups of pipes at the right end of the first delivery pipe 7, a filter 9 is fixedly connected between the two groups of pipes at the center of the first delivery pipe 7, and two The component pipes are fixedly connected to the air inlet of the expansion valve 10, the left end of the branch pipe at the left end of the first delivery pipe 7 is fixedly connected to the pipeline in the evaporator 11, the upper right end of the pipeline in the evaporator 11 is fixedly connected with the second delivery pipe 12, and the second delivery pipe 12 is composed of three groups of pipes, a gas-liquid separator 13 is fixedly connected between the two groups of pipes at the left end of the second delivery pipe 12, a cleaning mechanism 14 is slidably connected in the gas-liquid separator 13, a compressor 15 is fixedly connected between the two groups of pipes at the right end of the second delivery pipe 12, the left end of the connecting pipe 4 is fixedly connected to the right end of the heat exchanger 5, and the liquid storage tank 8, the filter 9, the evaporator 11, the gas-liquid separator 13 and the compressor 15 are all fixedly connected to the inner wall of the heat pump unit box 3;

[0026] The detection mechanism 6 includes a fixing plate 61 . The fixing plate 61 is fixedly connected to the top of the heat exchanger 5 . The left end of the fixing plate 61 is fixedly connected to a motor 62 . The fixing plate 61 is convenient for fixing and installing the motor 62 .

[0027] The output shaft at the right end of the motor 62 is fixedly connected to a first rotating disk 63 , and an eight-shaped sliding groove 64 is arranged at the right end of the first rotating disk 63 . The first rotating disk 63 is convenient for driving the eight-shaped sliding groove 64 to rotate.

[0028] A first sliding block 65 is slidably connected in the eight-shaped sliding groove 64 , and a first sliding rod 66 is fixedly connected to the right end of the first sliding block 65 . The eight-shaped sliding groove 64 facilitates the first sliding block 65 to move.

[0029] A temperature sensor 67 is fixedly connected to the bottom of the first sliding rod 66 , and the temperature sensor 67 is electrically connected to an external display screen. The temperature sensor 67 is convenient for detecting the temperature of the liquid.

[0030] The left end of the first rotating disk 63 is rotatably connected to the right end of the fixing plate 61 , and the first sliding rod 66 penetrates the top right end of the heat exchanger 5 and is slidably connected to the inside thereof.

[0031] The working principle of an air-source-water-source two-stage coupled heat pump unit based on the first embodiment is:

[0032] First, the staff transports cooling water to the heat exchanger 5 through the connecting pipe 4, and then absorbs heat from the air under low pressure, so that when the air passes through the heat exchanger 5, the pipeline in the heat exchanger 5 will take away the heat in the air, realizing a one-time heating treatment of the air and water, and then transports the air to the liquid storage tank 8 through the first delivery pipe 7, and then transports the air to the filter 9 through the liquid storage tank 8 to filter the impurities in the air to prevent the impurities from entering the compressor 15 and causing damage, and then controls the flow and pressure of the air through the expansion valve 10, so that the air is transported to the evaporator 11 through the first delivery pipe 7, and then passes through the evaporator 11 in The air absorbs heat under low pressure, so that when the air passes through the evaporator 11, the pipeline in the evaporator 11 will take away the heat in the air, and obtain a gas-liquid mixture, thereby realizing secondary treatment of the air. The gas-liquid mixture in the pipeline in the evaporator 11 is then transported to the gas-liquid separator 13 through the second delivery pipe 12, and the air and water are separated by the gas-liquid separator 13. The separated air is then transported to the compressor 15 through the second delivery pipe 12, and the air is compressed into high-temperature and high-pressure gas by the compressor 15, so that the high-temperature and high-pressure gas is transported to the pipeline in the heat exchanger 5 through the second delivery pipe 12, and the cooling water in the heat exchanger 5 is heated for a second time.

[0033] Second, after the cooling water in the heat exchanger 5 is heated for the second time, the motor 62 is started, the motor 62 drives the first turntable 63 to rotate, the first turntable 63 drives the eight-shaped slide 64 to rotate, and the eight-shaped slide 64 drives the first sliding block 65 to move downward through its eight-shaped setting during the rotation process, the first sliding block 65 drives the first sliding rod 66 to move downward, and the first sliding rod 66 drives the temperature sensor 67 to move downward. When the detection head of the temperature sensor 67 contacts the heated liquid in the heat exchanger 5, the motor 62 is stopped, and the temperature of the heated liquid in the heat exchanger 5 is detected by the temperature sensor 67, and the detection information is transmitted to the external display screen. The staff observes the temperature of the heated liquid in the heat exchanger 5 through the display screen to prevent the water from being overheated or overcooled, causing unnecessary energy waste, and at the same time prevent the energy consumption of the unit from increasing, extend the equipment life, and reduce operating costs. Embodiment 2:

[0034] See also Figure 4~Figure 5 Compared with the first embodiment, the utility model is an air source and water source two-stage coupled heat pump unit. The present embodiment also includes: a cleaning mechanism 14, the cleaning mechanism 14 includes a fixing rod 141, the rear end of the heat pump unit box 3 is fixedly connected with the fixing rod 141, the front end of the fixing rod 141 is fixedly connected with the mounting rod 142, and the fixing rod 141 is convenient for fixing and installing the mounting rod 142.

[0035] A second sliding rod 143 is slidably connected inside the mounting rod 142, a gear rack assembly 144 is fixedly connected to the top of the second sliding rod 143, a second rotating disk 145 is fixedly connected to the front end of the gear rack assembly 144 via a gear rod, and the gear rack assembly 144 is convenient for driving the second rotating disk 145 to rotate.

[0036] A ring block 146 is fixedly connected to the front end of the second rotating disk 145, a second sliding block 147 is slidably connected to the outer wall of the ring block 146, a moving rod 148 is fixedly connected to the front end of the second sliding block 147, and the second sliding block 147 is convenient for driving the moving rod 148 to move.

[0037] A scraper ring 149 is fixedly connected to the top of the moving rod 148, and an electromagnetic spring 1410 is fixedly connected to the bottom of the mounting rod 142. The top of the electromagnetic spring 1410 is fixedly connected to the bottom of the second sliding rod 143, and the electromagnetic spring 1410 is electrically connected to the external current output device. The scraper ring 149 facilitates scraping the inside of the gas-liquid separator 13.

[0038] The annular block 146 is arranged in a spiral shape, and the moving rod 148 passes through the bottom of the gas-liquid separator 13 and is slidably connected to the inside thereof. A scraper ring 149 is slidably connected inside the gas-liquid separator 13 .

[0039] In this embodiment:

[0040] When the inside of the gas-liquid separator 13 needs to be cleaned, the electromagnetic spring 1410 is driven by the external current output device, so that the electromagnetic spring 1410 drives the second sliding rod 143 to move downward, and the second sliding rod 143 drives the gear plate on the gear toothed plate assembly 144 to move downward, and the gear plate drives the gear on the gear toothed plate assembly 144 to rotate, and the gear drives the second turntable 145 to rotate through the gear rod, and the second turntable 145 drives the annular block 146 to rotate, and the annular block 146 drives the second sliding block 147 to move downward through the spiral setting, and the second sliding block 147 drives the moving rod 148 to move downward, and the moving rod 148 drives the scraper ring 149 to move downward, so that the scraper ring 149 scrapes the inside of the gas-liquid separator 13 to prevent blockage or accumulation inside the gas-liquid separator 13, resulting in additional resistance in the gas-liquid separator 13, thereby reducing the overall energy efficiency of the heat pump system.

[0041] The utility model provides an air-source-water-source two-stage coupled heat pump unit through improvement, wherein a detection mechanism 6 is provided, and a temperature sensor 67 is driven to move through the cooperation of an eight-shaped slide groove 64 and a first sliding rod 66, and the temperature of the heating liquid in the heat exchanger 5 is detected to prevent the phenomenon of overheating or overcooling of water, resulting in unnecessary waste of energy, and at the same time prevent the increase of energy consumption of the unit, extend the life of the equipment, and reduce operating costs; a cleaning mechanism 14 is provided, and a scraper ring 149 is driven by the spiral setting of an annular block 146 to scrape the inside of the gas-liquid separator 13, so as to prevent blockage or accumulation inside the gas-liquid separator 13, resulting in additional resistance of the gas-liquid separator 13, thereby reducing the overall energy efficiency of the heat pump system.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model, and the standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0043] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air-source-water-source two-stage coupled heat pump unit, comprising a base plate (1), a control terminal (2) being fixedly connected to the left end of the top of the base plate (1), a heat pump unit box (3) being fixedly connected to the right end of the top of the base plate (1), connecting pipes (4) being fixedly connected to both the upper and lower sides of the right end of the heat pump unit box (3), a heat exchanger (5) being fixedly connected to the right end of the heat pump unit box (3), a detection mechanism (6) being fixedly connected to the top of the heat exchanger (5), a first delivery pipe (7) being fixedly connected to the lower left end of the pipeline in the heat exchanger (5), and the first delivery pipe (7) being composed of four groups of pipes, a liquid storage tank (8) being fixedly connected between two groups of pipes at the right end of the first delivery pipe (7), and the first A filter (9) is fixedly connected between two groups of pipes at the center of the delivery pipe (7); the two groups of pipes at the left end of the first delivery pipe (7) are fixedly connected to the air inlet of the expansion valve (10); the left end of the branch pipe at the left end of the first delivery pipe (7) is fixedly connected to the pipeline inside the evaporator (11); the upper right end of the pipeline inside the evaporator (11) is fixedly connected to a second delivery pipe (12), and the second delivery pipe (12) is composed of three groups of pipes; a gas-liquid separator (13) is fixedly connected between the two groups of pipes at the left end of the second delivery pipe (12); a cleaning mechanism (14) is slidably connected inside the gas-liquid separator (13); and a compressor (15) is fixedly connected between the two groups of pipes at the right end of the second delivery pipe (12); Features: The detection mechanism (6) comprises: a fixing plate (61), the top of the heat exchanger (5) being fixedly connected to the fixing plate (61); a motor (62), the left end of the fixing plate (61) being fixedly connected to the motor (62); a first rotating disk (63), the right end of the output shaft of the motor (62) being fixedly connected to the first rotating disk (63); an eight-shaped sliding groove (64), the right end of the first rotating disk (63) being provided with an eight-shaped sliding groove (64); and a first sliding block (65), the first sliding block (65) being slidably connected in the eight-shaped sliding groove (64).

2. According to claim 1, an air-source-water-source two-stage coupled heat pump unit is characterized in that: The detection mechanism (6) further comprises: a first sliding rod (66), the right end of the first sliding block (65) being fixedly connected to the first sliding rod (66); and a temperature sensor (67), the bottom of the first sliding rod (66) being fixedly connected to the temperature sensor (67), and the temperature sensor (67) being electrically connected to an external display screen.

3. According to claim 2, an air-source-water-source two-stage coupled heat pump unit is characterized in that: The cleaning mechanism (14) comprises: a fixed rod (141), the rear end of the heat pump unit box (3) being fixedly connected to the fixed rod (141); a mounting rod (142), the front end of the fixed rod (141) being fixedly connected to the mounting rod (142); a second sliding rod (143), the mounting rod (142) being slidably connected to the second sliding rod (143); a gear toothed plate assembly (144), the top of the second sliding rod (143) being fixedly connected to the gear toothed plate assembly (144); a second rotating disk (145), the front end of the gear toothed plate assembly (144) being fixedly connected to the second rotating disk (145) via the gear rod; an annular block (146), the front end of the second rotating disk (145) being fixedly connected to the annular block (146); and a second sliding block (147), the outer wall of the annular block (146) being slidably connected to the second sliding block (147).

4. According to claim 3, an air-source-water-source two-stage coupled heat pump unit is characterized in that: The cleaning mechanism (14) further comprises: a moving rod (148), the front end of the second sliding block (147) being fixedly connected to the moving rod (148); a scraper ring (149), the top of the moving rod (148) being fixedly connected to the scraper ring (149); and an electromagnetic spring (1410), the bottom of the inner portion of the mounting rod (142) being fixedly connected to the electromagnetic spring (1410); wherein the top of the electromagnetic spring (1410) is fixedly connected to the bottom of the second sliding rod (143), and the electromagnetic spring (1410) is electrically connected to an external current output device.

5. According to claim 4, an air-source-water-source two-stage coupled heat pump unit is characterized in that: The left end of the first rotating disk (63) is rotatably connected to the right end of the fixed plate (61), and the first sliding rod (66) passes through the top right end of the heat exchanger (5) and is slidably connected to the inside thereof.

6. According to claim 5, an air-water-source two-stage coupled heat pump unit is characterized in that: The left end of the connecting pipe (4) is fixedly connected to the right end of the heat exchanger (5), and the liquid storage tank (8), the filter (9), the evaporator (11), the gas-liquid separator (13) and the compressor (15) are all fixedly connected to the inner wall of the heat pump unit box (3).

7. The air-water-source two-stage coupled heat pump unit according to claim 6, characterized in that: The annular block (146) is arranged in a spiral shape, the moving rod (148) passes through the bottom of the gas-liquid separator (13) and is slidably connected to the inside thereof, and a scraper ring (149) is slidably connected to the inside of the gas-liquid separator (13).