Refrigerant recycling device for air conditioner and refrigerator

Abstract

The utility model relates to the technical field of refrigerant recycling devices, in particular to an air conditioner and refrigerator refrigerant recycling device which comprises a refrigerant recycling machine body, a communicating pipe and a heat dissipation opening are arranged on the refrigerant recycling machine body, and the outer surface of the refrigerant recycling machine body is covered with a composite protective layer. The composite protective layer comprises a chemical nickel-plated phosphorus alloy inner protective layer and a polytetrafluoroethylene outer protective coating, and the chemical nickel-plated phosphorus alloy inner protective layer has excellent corrosion resistance, so that the corrosion of a high-humidity and high-corrosion environment to the equipment body can be resisted; the polytetrafluoroethylene outer protective coating has the characteristics of wear resistance, chemical corrosion resistance and low friction coefficient, so that the protective capability of the surface of the equipment can be further enhanced, the problem of possible leakage of the recycling machine due to external environment corrosion in the prior art is effectively solved, the service life of the equipment is prolonged, and the pollution risk to the environment is reduced; and meanwhile, the health and safety of workers are also guaranteed.

Description

Technical Field

[0001] This utility model relates to the technical field of refrigerant recovery devices, specifically to a device for recovering and reusing refrigerant in air conditioners and refrigerators. Background Technology

[0002] Refrigerant is the working fluid that completes the thermodynamic cycle in a refrigeration machine. It absorbs heat from the object being cooled at a low temperature and then transfers it to cooling water or air at a higher temperature. In vapor compression refrigeration machines, refrigerants that can liquefy at room temperature or lower are used, such as Freon, azeotropic mixtures, hydrocarbons, and ammonia. During refrigerant disassembly and maintenance, effective refrigerant recovery is necessary; otherwise, discharge or leakage may pollute the environment. In particular, gases such as Freon can cause ozone layer depletion, thus requiring refrigerant recovery machines.

[0003] Existing technologies for using refrigerant recovery machines often require operation in high humidity or highly corrosive environments. With increased usage time and frequency, the recovery machine may gradually become corroded by external environmental factors. Equipment corrosion may lead to leakage risks, environmental pollution, and impact on the physical and mental health of workers. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an air conditioner and refrigerator refrigerant recovery and reuse device to solve the above problems.

[0005] The purpose of this utility model is achieved as follows: an air conditioner and refrigerator refrigerant recovery and reuse device, including a refrigerant recovery machine body, the refrigerant recovery machine body is provided with a connecting pipe and a heat dissipation port, the outer surface of the refrigerant recovery machine body is covered with a composite protective layer, the composite protective layer includes an inner protective layer of chemically plated nickel-phosphorus alloy and an outer protective coating of polytetrafluoroethylene.

[0006] Preferably, the thickness of the electroless nickel-phosphorus alloy inner protective layer is 25-35 mm, and the thickness of the polytetrafluoroethylene outer protective coating is 50-80 mm.

[0007] Preferably, a protective component is provided on the outside of the heat dissipation vent.

[0008] Preferably, the protective component includes a rain shield located above the heat dissipation vent, the lower end of the rain shield is provided with an L-shaped plate, the horizontal part of the L-shaped plate is provided with a plurality of through holes, and both ends of the vertical part of the L-shaped plate are provided with blocking plates.

[0009] Preferably, the upper surface of the rain shield is an inclined surface, and the cross-sectional shape of the rain shield is a right trapezoid.

[0010] Preferably, the vertical portion of the L-shaped plate has a rectangular through groove through which the blocking plate passes.

[0011] Preferably, a connecting rod is fixedly connected between the two baffles.

[0012] This utility model has the following beneficial effects:

[0013] 1. This air conditioner and refrigerator refrigerant recovery and reuse device utilizes the excellent corrosion resistance of its chemically plated nickel-phosphorus alloy inner protective layer to resist the erosion of the equipment body by high humidity and highly corrosive environments. The polytetrafluoroethylene outer protective coating has the characteristics of wear resistance, chemical corrosion resistance, and low friction coefficient, which can further enhance the protective ability of the equipment surface. The double-layer structure of the composite protective layer forms a synergistic dual protection system of "corrosion-resistant core + inert outer shell", which effectively solves the problem of leakage that may occur in the recovery machine due to external environmental corrosion in the existing technology, extends the service life of the equipment, reduces the risk of environmental pollution, and also protects the health and safety of the staff.

[0014] 2. A protective component is provided on the outside of the heat dissipation vent. After the protective component is installed, the refrigerant recovery machine can be placed in an open area outside the workshop for use. At the same time, it reduces the impact of rainy weather on the refrigerant recovery machine and improves the overall applicability of the device. Specifically, the protective component can protect the heat dissipation vent and prevent rainwater from entering the vent. Rainwater intrusion can cause the equipment to overheat and affect the normal operation of the refrigerant recovery machine. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a refrigerant recovery machine in the prior art;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0019] Figure 4 This is a schematic diagram of the mating structure of the L-shaped plate and the rectangular through groove of this utility model;

[0020] Figure 5 This is a schematic diagram of the composite protective layer of this utility model;

[0021] The labels in the attached diagram are:

[0022] 1. Refrigerant recovery unit body; 2. Connecting pipe; 3. Heat dissipation port; 4. Composite protective layer; 41. Chemically plated nickel-phosphorus alloy inner protective layer; 42. Polytetrafluoroethylene outer protective coating; 5. Protective components; 51. Rain shield; 52. L-shaped plate; 53. Baffle plate; 54. Through hole; 6. Rectangular through slot; 7. Connecting rod. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the technical solutions in the specific embodiments of this utility model are clearly and completely described below to further illustrate this utility model. Obviously, the specific embodiments described are only a part of the embodiments of this utility model, and not all of them.

[0024] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0025] Example 1:

[0026] A refrigerant recovery and reuse device for air conditioners and refrigerators includes a refrigerant recovery unit 1, a connecting pipe 2 and a heat dissipation port 3 on the refrigerant recovery unit 1, and a composite protective layer 4 covering the outer surface of the refrigerant recovery unit 1. The composite protective layer 4 includes an inner protective layer 41 of electroless nickel-phosphorus alloy plating and an outer protective coating 42 of polytetrafluoroethylene. In use, the connecting pipe 2 is connected to the refrigerant discharge port of the air conditioner or refrigerator. The refrigerant recovery unit 1 uses a built-in compressor to generate negative pressure, drawing the refrigerant into the recovery unit for a series of processes such as condensation, liquefaction, and impurity separation. This technology is common in the market, and the refrigerant recovery unit is also common in the market. The existing equipment will not be described in detail here. This device utilizes the excellent corrosion resistance of the chemically plated nickel-phosphorus alloy inner protective layer 41 to resist the erosion of the equipment body by high humidity and highly corrosive environments. The polytetrafluoroethylene outer protective coating 42 has the characteristics of wear resistance, chemical corrosion resistance and low coefficient of friction, which can further enhance the protective ability of the equipment surface. The double-layer structure of the composite protective layer 4 forms a synergistic dual protection system of "corrosion-resistant core + inert outer shell", which effectively solves the problem of leakage that may occur in the recycling machine due to external environmental corrosion in the existing technology, extends the service life of the equipment, reduces the risk of environmental pollution, and also protects the health and safety of the staff.

[0027] In this embodiment, the thickness of the electroless nickel-phosphorus alloy inner protective layer 41 is 25-35mm, and the thickness of the polytetrafluoroethylene outer protective coating 42 is 50-80mm. The thickness of the electroless nickel-phosphorus alloy inner protective layer 41 is set within this range to ensure sufficient coating density to achieve corrosion resistance, while avoiding the impact on the heat dissipation performance of the equipment body due to excessive thickness. The slightly thicker design of the polytetrafluoroethylene outer protective coating 42 allows it to better withstand external friction and impact, further improving the protective effect.

[0028] In this embodiment, a protective component 5 is provided on the outside of the heat dissipation port 3. After the protective component 5 is installed, the refrigerant recovery machine can be placed in an open area outside the workshop for use. At the same time, the impact of rainy weather on the refrigerant recovery machine is reduced, and the overall applicability of the device is improved. Specifically, the protective component 5 can protect the heat dissipation port 3 and prevent external rainwater from entering the interior of the heat dissipation port 3. Rainwater intrusion can cause the equipment to overheat and affect the normal operation of the refrigerant recovery machine body 1.

[0029] In this embodiment, the protective component 5 includes a rain shield 51 located above the heat dissipation vent 3. The lower end of the rain shield 51 is provided with an L-shaped plate 52. The horizontal part of the L-shaped plate 52 is provided with several through holes 54. Both ends of the vertical part of the L-shaped plate 52 are provided with baffle plates 53. The rain shield 51 can prevent rainwater from directly hitting the heat dissipation vent 3. The through holes 54 in the horizontal part of the L-shaped plate 52 allow air circulation for heat dissipation, while the baffle plates 53 in the vertical part prevent rainwater or other debris from entering from both sides of the heat dissipation vent 3. When using the protective component 5, it can be adapted to the current weather and working environment. For example, if the temperature is high, the rainfall is low, and the working environment is clean, the baffle plates 53 can be omitted to improve heat dissipation performance.

[0030] In this embodiment, the upper surface of the rain shield 51 is an inclined surface, and the cross-sectional shape of the rain shield 51 is a right trapezoid. The inclined upper surface facilitates the rapid sliding of rainwater and prevents rainwater from accumulating on the rain shield 51.

[0031] In this embodiment, the vertical portion of the L-shaped plate 52 is provided with a rectangular through slot 6 through which the blocking plate 53 passes. The blocking plate 53 is installed on the vertical portion of the L-shaped plate 52 through the rectangular through slot 6. This installation method facilitates the disassembly and installation of the blocking plate 53 and improves the disassembly and maintenance convenience of the protective component 5.

[0032] In this embodiment, a connecting rod 7 is fixedly connected between the two baffle plates 53. The connecting rod 7 connects the two baffle plates 53 into a whole, which enhances the structural stability of the baffle plates 53 and makes them less prone to shaking, displacement or deformation when subjected to external impact or wind force. At the same time, when the side wall of the baffle plate 53 abuts against the side wall of the refrigerant recovery machine body 1, the side wall of the connecting rod 7 also abuts against the outer side wall of the vertical part of the L-shaped plate 52.

[0033] The working principle of this utility model is as follows: An air conditioner / refrigerator refrigerant recovery and reuse device is used by connecting the connecting pipe 2 to the refrigerant outlet of the air conditioner or refrigerator. The refrigerant recovery machine body 1 uses a built-in compressor to generate negative pressure, drawing the refrigerant into the recovery machine for a series of processes such as condensation, liquefaction, and impurity separation. This technology is common in the market, and the refrigerant recovery machine is a common existing device, so it will not be described in detail here. This device utilizes the excellent corrosion resistance of the chemically plated nickel-phosphorus alloy inner protective layer 41 to resist the erosion of the equipment body by high humidity and highly corrosive environments. The polytetrafluoroethylene outer protective coating 42 has the characteristics of wear resistance, chemical corrosion resistance, and a low coefficient of friction, which can further enhance the protective ability of the equipment surface. The double-layer structure of the composite protective layer 4 forms a synergistic dual protection system of "corrosion-resistant core + inert outer shell", which effectively solves the problem of leakage that may occur in the existing refrigerant recovery machine due to external environmental corrosion, extends the service life of the equipment, reduces the risk of environmental pollution, and also protects the health and safety of the staff. The outer side of the heat dissipation port 3 is equipped with a protective component 5. After the protective component 5 is installed, the refrigerant recovery machine can be placed in an open area outside the workshop for use, while reducing the impact of rainy weather on the refrigerant recovery machine and improving the overall applicability of the device. Specifically, the protective component 5 can protect the heat dissipation port 3, preventing external rainwater from entering the interior of the heat dissipation port 3. Rainwater intrusion can cause the equipment to overheat and affect the normal operation of the refrigerant recovery machine body 1.

[0034] It should be noted that, depending on the implementation needs, the various components described in the embodiments of this utility model can be divided into more components, or two or more components or parts of components can be combined into new components to achieve the purpose of the embodiments of this utility model. The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be pointed out that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A refrigerant recovery and reuse device for air conditioners and refrigerators, comprising a refrigerant recovery machine body (1), wherein the refrigerant recovery machine body (1) is provided with a connecting pipe (2) and a heat dissipation port (3), characterized in that: The outer surface of the refrigerant recovery machine body (1) is covered with a composite protective layer (4), which includes an inner protective layer (41) of electroless nickel-phosphorus alloy and an outer protective coating (42) of polytetrafluoroethylene.

2. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 1, characterized in that: The thickness of the chemically plated nickel-phosphorus alloy inner protective layer (41) is 25-35 mm, and the thickness of the polytetrafluoroethylene outer protective coating (42) is 50-80 mm.

3. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 1, characterized in that: A protective component (5) is provided on the outside of the heat dissipation port (3).

4. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 3, characterized in that: The protective component (5) includes a rain shield (51) located above the heat dissipation port (3). The lower end of the rain shield (51) is provided with an L-shaped plate (52). The horizontal part of the L-shaped plate (52) is provided with several through holes (54). Both ends of the vertical part of the L-shaped plate (52) are provided with baffle plates (53).

5. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 4, characterized in that: The upper surface of the rain shield (51) is an inclined surface, and the cross-sectional shape of the rain shield (51) is a right trapezoid.

6. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 4, characterized in that: The vertical portion of the L-shaped plate (52) has a rectangular through slot (6) through which the blocking plate (53) passes.

7. The refrigerant recovery and reuse device for air conditioners and refrigerators according to claim 4, characterized in that: A connecting rod (7) is fixedly connected between the two baffles (53).

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