Replacing device of energy-saving environment-friendly efficient refrigerant for air conditioner

Abstract

The utility model discloses an energy-saving environment-friendly efficient refrigerant replacing device for an air conditioner. The replacement device comprises a conduction switching part, a high-pressure inlet and outlet and a low-pressure inlet and outlet in the front end wall of a main block of the conduction switching part are communicated with a recovery opening and a vacuum opening in the rear end wall through a middle ventilation cavity, a filling opening of the main block is directly connected with the high-pressure inlet and outlet in the front end through a filling hole channel, and each hole channel is provided with a switch control piece. The recycling opening is communicated with an old agent recycling bottle; the vacuum opening is communicated with a vacuum pump; the new agent storage bottle is connected with the filling opening; the new agent storage bottle is attached to a weighing device below; the device has the effects of recycling old refrigerants, protecting the environment, efficiently and quickly replacing the refrigerants and saving energy.

Description

Technical Field

[0001] The utility model relates to the field of refrigerant replacement, in particular to a device for replacing energy-saving, environmentally friendly and high-efficiency refrigerant for air conditioners. Background Art

[0002] Air conditioners are widely used appliances for cooling and heating. They rely on a compressor and refrigerant to cool or heat. Older air conditioners can experience reduced cooling and heating capabilities, impacting user experience. Furthermore, commonly used refrigerants, such as Freon R22, R410A, R32, and R134A, have lower heat exchange coefficients than newer refrigerants (hydrocarbons or the Learnuo series). This results in compressors requiring greater power and pressure for the same cooling effect, which in turn consumes more electricity. Therefore, for older or energy-intensive air conditioning systems, refrigerant replacement is often recommended. Currently, dedicated equipment is not available for refrigerant replacement, and manual replacement is typically performed: workers first release the old refrigerant directly into the atmosphere, then invert the bottle and add the new refrigerant to the air conditioner compressor, using a quantity determined empirically. Its defects are: first, the direct emission of Freon into the air is not environmentally friendly, seriously damages the ozone layer, and is also a waste of resources; second, workers need to refill it based on experience, which requires multiple attempts and low filling efficiency; third, the filling amount is not accurate, the cooling effect is poor, the cooling energy consumption is high, and the compressor needs to be started for a long time, which consumes energy. Utility Model Content

[0003] In order to solve one or more of the above problems, the present invention provides an energy-saving, environmentally friendly and efficient refrigerant replacement device for air conditioners.

[0004] According to one aspect of the present invention, an energy-saving, environmentally friendly and efficient refrigerant replacement device for an air conditioner comprises: a conduction switching portion, a ventilation cavity is provided in the middle of a main block of the conduction switching portion, a high-pressure inlet and a low-pressure inlet are provided on the front end wall of the main block, and a filling port, a recovery port and a vacuum port are provided on the rear end wall, the high-pressure inlet and the inlet are connected to the ventilation cavity through a high-pressure duct, the low-pressure inlet and the inlet are connected to the ventilation cavity through a low-pressure duct, the filling port is directly connected to the high-pressure inlet and the inlet at the front end through the filling duct, the recovery port is connected to the ventilation cavity through the recovery duct, and the vacuum port is connected to the ventilation cavity through the vacuum duct, the high-pressure duct, the low-pressure duct, the filling duct and the recovery duct are all provided with switch control components, and the switch control components are normally closed;

[0005] High-pressure pipe: the inner end of the high-pressure pipe is connected to the high-pressure inlet and outlet. During replacement, the outer end of the high-pressure pipe is connected to the interface of the high-pressure service valve of the air-conditioning compressor;

[0006] Low-pressure pipe, the inner end of the low-pressure pipe is connected to the low-pressure inlet and outlet. During replacement, the outer end of the low-pressure pipe is connected to the interface of the low-pressure service valve of the air-conditioning compressor;

[0007] Old refrigerant recovery bottle, connected to the recovery port, opens the switch control components of the recovery channel, high-pressure channel, and low-pressure channel to achieve efficient and environmentally friendly recovery of old refrigerant;

[0008] Vacuum pump, which is connected to the vacuum port, opens the switch control components of the vacuum channel, high-pressure channel, and low-pressure channel to achieve rapid vacuuming of the refrigeration system;

[0009] New agent storage bottle, the new agent storage bottle is connected to the filling port, the new agent storage bottle is attached to the weighing device below, and the switch control part of the filling channel is opened to achieve accurate filling of new refrigerant.

[0010] In some embodiments, both the high-pressure inlet and outlet and the low-pressure inlet and outlet are provided with pressure gauges;

[0011] Or the high-pressure pipe and the low-pressure pipe are pipes of different colors, and the connected pressure gauge and the high-pressure pipe and low-pressure pipe are the same color; or the switch control component is a manual plug valve or an electromagnetic plug.

[0012] In some embodiments, the high-pressure inlet and outlet and the low-pressure inlet and outlet are arranged symmetrically up and down or left and right on the front end surface of the main block, and the high-pressure hole, low-pressure hole, and filling hole are axial holes and are arranged in an array about the central circumference;

[0013] The filling channel is directly connected to the high-pressure inlet and outlet at the front end. The high-pressure channel is connected to the high-pressure inlet and outlet through a chordal short pipe, and the low-pressure channel is connected to the low-pressure inlet and outlet through a chordal short pipe.

[0014] In some embodiments, the upper surface of the main block is provided with a circular positioning groove having the same contour as the lower end of the new agent storage bottle, the weighing device is fixed to one side of the lower groove wall of the positioning groove, and the vertical center hole of the positioning groove is the filling port, which is vertically connected to the filling channel below;

[0015] The vacuum port is a horizontal port, the inner end of which is directly connected to the vacuum channel in the front and the outer end is connected to the vacuum pump in the rear.

[0016] In some embodiments, the recovery port is a vertical port symmetrically arranged with the filling port, the upper end of which is connected to the vertical port of the recovery channel and the lower end of which is vertically connected to the waste agent recovery bottle;

[0017] Or the recovery port is a horizontal port, the inner end of which is directly connected to the recovery channel in the front and the outer end is connected to the old agent recovery bottle in the rear.

[0018] In some embodiments, the filling port, recovery port, and vacuum port are three horizontal outlets on the rear end face of the main block, and the three are connected to the old agent recovery bottle, vacuum pump, and new agent storage bottle through the new agent filling pipe, old agent recovery pipe, vacuum pipe, respectively.

[0019] In some embodiments, an integrated pipe is also included, which includes an outer protective wall and an inner filling layer. The new agent filling pipe, the old agent recovery pipe, and the vacuum pipe are parallel to each other and axially placed in the outer protective wall, and their adjacent gaps are fixedly connected by the inner filling layer.

[0020] In some embodiments, the new refrigerant is 2,3,3,3-tetrafluoroethylene or Learnuo refrigerant, and the compressor is a conventional compressor;

[0021] Or the main block is any one of polypropylene, PPSU polyphenylsulfone, PEEK polyetheretherketone, nylon, Teflon and aluminum alloy.

[0022] In some embodiments, a gripping handle is provided under the rear end of the main block, a PLC control component is provided in the gripping handle and a control button is provided on the outer wall, and the PLC control component is electrically connected to the switch control component and the pressure gauge.

[0023] In some embodiments, the ends of the high-pressure pipe and the low-pressure pipe are directly inserted into one end of the quick-connect fitting of the high-seal environmentally friendly connector, and the other end of the quick-connect fitting can be directly inserted into the joint or pipe hole of the high-pressure service valve and the low-pressure service valve of the interference sleeve air-conditioning compressor;

[0024] The rear end of the quick-connect connector is provided with a large-sized base plate and the front end is slidably connected to a truncated cone-shaped or bowl-shaped sealing cover. The sealing cover is made of elastic plastic. A plurality of protruding guide prisms are arranged in a circular array on the outer wall of the quick-connect connector. The inner wall of the shaft hole of the sealing cover is provided with a plurality of concave guide grooves. The guide groove sleeves the guide prisms. The rear end of the spring sleeve on the quick-connect connector is connected to the base plate and the front end is connected to the rear end of the sealing cover.

[0025] The beneficial effects of the replacement device are: first, the dedicated equipment is convenient for workers to operate in a programmed manner, and the refrigerant can be replaced in a standardized manner. The refrigerant can be replaced efficiently, and the replacement can be achieved quickly, saving energy. At the same time, it avoids human error and achieves the best replacement effect. After the replacement, the system has a good cooling effect and saves energy; second, a recovery channel and an old agent recovery bottle are set, and the old refrigerant is effectively recycled, which is beneficial to environmental protection, reduces the greenhouse effect, and optimizes resource reuse; third, the opening is accurately controlled by the switch control valve, and the filling of the new refrigerant is controlled by a weighing device, which can achieve fast, efficient and accurate filling. Refrigerant, while further reducing the filling time, improving the refrigeration effect, is conducive to achieving the optimal refrigeration effect and saving energy; fourthly, a vacuum pump and a vacuum channel are set, and automatic vacuuming can completely remove impurities in the refrigeration system to avoid impurity contamination; fifthly, the new agent is added through the high-pressure port, which is fast and efficient; sixthly, each channel is set independently, and the filling of new and old agents is separated, which can achieve clean and impurity-free replacement. At the same time, after each filling, the refrigerant in the pipe can be removed through the vacuum system, so as to keep the cleanliness of the device at all times and provide clean equipment for each filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional schematic diagram of an energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to embodiment (I) of the present utility model;

[0027] Figure 2 for Figure 1 A three-dimensional schematic diagram of a high-seal environmentally friendly connector installed at the front end of the replacement device is shown;

[0028] Figure 3 for Figure 2 A schematic cross-sectional view of a high-seal environmentally friendly connector installed at the front end of the replacement device shown;

[0029] Figure 4 for Figure 3 A schematic cross-sectional view of the main block shown;

[0030] Figure 5 for Figure 4 AA cross-sectional view of the main block shown;

[0031] Figure 6 for Figure 3 A schematic cross-sectional view of the high-seal environmentally friendly connector shown;

[0032] Figure 7 for Figure 6 A three-dimensional schematic diagram of a high-seal environmentally friendly connector is shown;

[0033] Figure 8 This is a three-dimensional schematic diagram of an energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to embodiment (II) of the present utility model;

[0034] Figure 9 for Figure 8 A schematic cross-sectional view of the main block shown;

[0035] Figure 10 for Figure 9 a schematic right side view of the main block shown;

[0036] Air conditioning compressor 00, high pressure service valve 001, low pressure service valve 002;

[0037] Conductivity switching unit 01, main block 1, ventilation cavity 100, high-pressure inlet and outlet 101, low-pressure inlet and outlet 102, filling port 103, recovery port 104, vacuum port 105, high-pressure channel 11, low-pressure channel 12, filling channel 13, recovery channel 14, vacuum channel 15, chord-wise short tube 16, gripping handle 17, positioning groove 18, switch control unit 2, pressure gauge 3;

[0038] High-pressure pipe 02; low-pressure pipe 03; old agent recovery bottle 04; vacuum pump 05;

[0039] New agent storage bottle 06, weighing device 061; integrated rack 07;

[0040] Integrated pipe 08, outer protective wall 080, inner filling layer 081, new agent filling pipe 4, old agent recovery pipe 5, vacuum pipe 6;

[0041] High-sealed environmentally friendly connector 09, quick-connect connector 090, base plate 091, sealing cover 092, guide prism 093, guide groove 094, spring 095;

[0042] PLC control component 010. DETAILED DESCRIPTION

[0043] The present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0044] Figures 1 to 10 A schematic diagram shows an energy-saving, environmentally friendly, and efficient refrigerant replacement device for air conditioners according to one embodiment of the present invention. As shown in the figure, the device includes:

[0045] The conduction switching part 01, the main block 1 of the conduction switching part 01 is provided with a ventilation cavity 100 in the middle, the front end wall of the main block 1 is provided with a high-pressure inlet and outlet 101, a low-pressure inlet and outlet 102, and the rear end wall is provided with a filling port 103, a recovery port 104, and a vacuum port 105. The high-pressure inlet and outlet 101 is connected to the ventilation cavity 100 through the high-pressure channel 11, the low-pressure inlet and outlet 102 is connected to the ventilation cavity 100 through the low-pressure channel 12, the filling port 103 is directly connected to the high-pressure inlet and outlet 101 at the front end through the filling channel 13, the recovery port 104 is connected to the ventilation cavity 100 through the recovery channel 14, and the vacuum port 105 is connected to the ventilation cavity 100 through the vacuum channel 15. The high-pressure channel 11, the low-pressure channel 12, the filling channel 13, and the recovery channel 14 are all provided with a switch control component 2, which is normally closed. The switch control component 2 is preferably a manual plug valve or an electromagnetic latch.

[0046] High-pressure pipe 02, the inner end of high-pressure pipe 02 is connected to the high-pressure inlet and outlet 101. During replacement, the outer end of high-pressure pipe 02 is connected to the interface of high-pressure inspection valve 001 of air-conditioning compressor 00;

[0047] Low-pressure pipe 03, the inner end of low-pressure pipe 03 is connected to the low-pressure inlet and outlet 102. During replacement, the outer end of low-pressure pipe 03 is connected to the interface of low-pressure inspection valve 002 of air-conditioning compressor 00;

[0048] The old refrigerant recovery bottle 04 is connected to the recovery port 104, and the switch control member 2 of the recovery channel 14, the high-pressure channel 11, and the low-pressure channel 12 is opened to realize the efficient and environmentally friendly recovery of the old refrigerant;

[0049] Vacuum pump 05, vacuum pump 05 is connected to vacuum port 105, opens the switch control element 2 of vacuum channel 15, high pressure channel 11, and low pressure channel 12, and realizes rapid vacuuming of the refrigeration system;

[0050] The new agent storage bottle 06 is connected to the filling port 103, and the new agent storage bottle 06 is attached to the weighing device 061 below, and the switch control component 2 of the filling channel 13 is opened to achieve accurate filling of the new refrigerant.

[0051] The beneficial effects of the replacement device are: first, the dedicated equipment is convenient for workers to operate in a programmed manner, and the refrigerant can be replaced in a standardized manner, and the refrigerant can be replaced efficiently, thereby achieving rapid replacement and saving energy. At the same time, it avoids human error and achieves the best replacement effect. After replacement, the system has a good cooling effect and saves energy. Second, the recovery channel 14 and the old agent recovery bottle 04 are provided, and the old refrigerant is effectively recycled, which is beneficial to environmental protection, reduces the greenhouse effect, and optimizes resource reuse. Third, the opening is accurately controlled by the switch control valve 2, and the filling of the new refrigerant is controlled by the weighing device 061, which can achieve rapid, efficient and accurate Refrigerant is added, and at the same time, the filling time is further reduced, the refrigeration effect is improved, which is conducive to obtaining the optimal refrigeration effect and saving energy; fourthly, a vacuum pump 05 and a vacuum channel 15 are set, and vacuuming is automated, which can completely remove impurities in the refrigeration system and avoid impurity contamination; fifthly, new agent is added through the high-pressure port, which is fast and efficient; sixthly, each channel is independently set, and the filling of new agent and old agent is separated, which can achieve clean and impurity-free replacement. At the same time, after each filling, the refrigerant in the pipe can be removed through the vacuum system, so as to keep the cleanliness of the device at all times and provide clean equipment for each filling.

[0052] Furthermore, in the two aforementioned embodiments, one of the LEARNUO series refrigerants is preferably 2,3,3,3-tetrafluoroethylene, and the compressor is a conventional compressor. When the cooling and heating equipment is a 1.5-HP air conditioner, the refrigerant charge is 0.5-0.65 kg and the pressure is 0.35-0.45 MPa. This compares to the approximately 1.25 kg charge and 0.5-0.8 MPa pressure of conventional refrigerants (R22, R410A, R32, R134A, etc.). This lower operating pressure and significantly reduced charge improves cooling efficiency while reducing energy consumption by 25%, resulting in more environmentally friendly, energy-saving, and efficient cooling.

[0053] Further, if Figures 1 to 7As shown, in the first embodiment, the device is further configured as follows: the upper surface of the main block 1 is provided with a circular positioning groove 18 with the same contour as the lower end of the new agent storage bottle 06, the weighing device 061 is fixed to one side of the lower groove wall of the positioning groove 18, the vertical center hole of the positioning groove 18 is the filling port 103, and the filling port 103 is vertically connected to the filling channel 13 below; preferably, the vacuum port 105 is a horizontal port, the inner end of which is directly connected to the vacuum channel 15 in front and the outer end is connected to the vacuum pump 05 at the rear. Preferably, the recovery port 104 is a vertical port symmetrically arranged with the filling port 103, the upper end of which is connected to the vertical port of the recovery channel 14 and the lower end is vertically connected to the old agent recovery bottle 04; preferably, the recovery port 104 is a horizontal port, the inner end of which is directly connected to the recovery channel 14 in front and the outer end is connected to the old agent recovery bottle 04 at the rear. The beneficial effects are as follows: the replacement device of the integrated structure is compact and easy to carry, and is suitable for filling and replacing refrigerants in small-scale equipment with small doses. At the same time, the positioning groove 18 is provided to accurately position the new agent storage bottle 06.

[0054] like Figures 8 to 10 In the second embodiment, the device is further configured with a filling port 103, a recovery port 104, and a vacuum port 105 as three horizontal outlets on the rear end of the main block 1. These ports are connected to the old agent recovery bottle 04, the vacuum pump 05, and the new agent storage bottle 06 through the new agent filling pipe 4, the old agent recovery pipe 5, and the vacuum pipe 6, respectively. This advantageous effect is that the replacement of the separate structure is suitable for large doses or in confined spaces, and the portable portion is lightweight and easy to operate.

[0055] Preferably, it also includes an integrated pipe 08, which includes an outer protective wall 080 and an inner filling layer 081. The new agent filling pipe 4, the old agent recovery pipe 5, and the vacuum pipe 6 are parallel to each other and axially placed in the outer protective wall 080, and their adjacent gaps are fixedly connected by the inner filling layer 081.

[0056] Preferably, an integrated rack 07 is further included, on which the new agent filling pipe 4, the old agent recovery pipe 5, and the vacuum pipe 6 are integrated and placed. The integrated rack 07 is a fixed frame or a movable frame. Its beneficial effect is that it facilitates integrated management and movement.

[0057] Furthermore, in each of the above embodiments, both the high-pressure inlet and outlet 101 and the low-pressure inlet and outlet 102 are equipped with pressure gauges 3. Preferably, the high-pressure pipe 02 and the low-pressure pipe 03 are of different colors, while the connected pressure gauges 3 and the high-pressure pipe 02 and low-pressure pipe 03 are of the same color. This arrangement allows for quick identification by operators, avoids incorrect assembly, and enables efficient replacement.

[0058] Preferably, the high-pressure inlet and outlet 101, the low-pressure inlet and outlet 102, and the refill port 103, the recovery port 104, and the vacuum port 105 provided on the rear end wall are fine threaded holes, each of which is threadedly connected to a straight-through connector made of metal or injection molding. This has the beneficial effect of simple structure and easy connection.

[0059] Furthermore, in each of the above embodiments, the high-pressure inlet and outlet 101 and the low-pressure inlet and outlet 102 are arranged symmetrically up and down or left and right on the front face of the main block 1, and the high-pressure duct 11, the low-pressure duct 12, and the filling duct 13 are axial holes and are arranged in an array about the central circumference;

[0060] The filling channel 13 is directly connected to the high-pressure inlet and outlet 101 at the front end, the high-pressure channel 11 is connected to the high-pressure inlet and outlet 101 through a chordal short tube 16, and the low-pressure channel 12 is connected to the low-pressure inlet and outlet 102 through a chordal short tube 16. The beneficial effect is that this distribution facilitates the connection and layout of external pipes.

[0061] Preferably, a gripping handle 17 is provided at the lower rear end of the main block 1, a PLC control component 010 is provided inside the gripping handle 17 and a control button is provided on the outer wall, and the PLC control component 010 is electrically connected to the switch control component 2 and the pressure gauge 3. The beneficial effects are: the gripping handle 17 is convenient for manual operation, and the control component and the control button are convenient for automated operation.

[0062] Preferably, the main block 1 is made of any one of polypropylene, PPSU polyphenylsulfone, PEEK polyetheretherketone, nylon, Teflon and aluminum alloy. The beneficial effect is that the above materials are resistant to high pressure and light in weight, which can reduce the weight of the device.

[0063] Furthermore, in each of the above embodiments, the ends of the high-pressure pipe 02 and the low-pressure pipe 03 are directly inserted into one end of the quick-connect connector 090 of the high-seal environmentally friendly connector 09, and the other end of the quick-connect connector 090 can be directly inserted into the joints or pipe holes of the high-pressure service valve 001 and the low-pressure service valve 002 of the interference sleeve air-conditioning compressor 00;

[0064] The rear end of the quick-connect connector 090 is equipped with a large base plate 091, and the front end is slidably connected to a truncated cone-shaped or bowl-shaped sealing cover 092. The sealing cover 092 is made of elastic plastic. The outer wall of the quick-connect connector 090 is provided with a plurality of protruding guide prisms 093 in a circular array. The inner wall of the axial hole of the sealing cover 092 is provided with a plurality of concave guide grooves 094. The guide grooves 094 are sleeved by the guide prisms 093. The spring 095 sleeved on the quick-connect connector 090 is connected to the base plate 091 at the rear end and to the rear end of the sealing cover 092 at the front end. The advantages are as follows: First, the highly sealed and environmentally friendly connector 09 can seal the connection end, preventing gas from migrating out of the connection end and liquid from overflowing, effectively avoiding operational pollution and achieving environmentally friendly operation. Second, the guide device enables rapid assembly and disassembly, and the elastic structure achieves elastic compression.

[0065] Preferably, a flow meter is provided in the old agent recovery bottle 04 .

[0066] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A device for replacing energy-saving, environmentally friendly and efficient refrigerant for air conditioners, characterized in that: include: A conduction switching part (01), wherein a ventilation cavity (100) is provided in the middle of a main block (1) of the conduction switching part (01), a high-pressure inlet and outlet (101) and a low-pressure inlet and outlet (102) are provided on a front end wall of the main block (1), and a filling port (103), a recovery port (104), and a vacuum port (105) are provided on a rear end wall, wherein the high-pressure inlet and outlet (101) are connected to the ventilation cavity (100) via a high-pressure duct (11), and the low-pressure inlet and outlet (102) are connected to the ventilation cavity (100) via a low-pressure duct (12). The cavity (100) is provided with a filling port (103) directly connected to the high-pressure inlet and outlet (101) at the front end via a filling channel (13); the recovery port (104) is connected to the ventilation cavity (100) via a recovery channel (14); the vacuum port (105) is connected to the ventilation cavity (100) via a vacuum channel (15); the high-pressure channel (11), the low-pressure channel (12), the filling channel (13), and the recovery channel (14) are all provided with a switch control component (2); and the switch control component (2) is normally closed; A high-pressure pipe (02), the inner end of the high-pressure pipe (02) is connected to the high-pressure inlet and outlet (101), and during replacement operation, the outer end of the high-pressure pipe (02) is connected to the interface of the high-pressure inspection valve (001) of the air-conditioning compressor (00); A low-pressure pipe (03), the inner end of the low-pressure pipe (03) is connected to the low-pressure inlet and outlet (102), and during replacement operation, the outer end of the low-pressure pipe (03) is connected to the interface of the low-pressure inspection valve (002) of the air-conditioning compressor (00); A used refrigerant recovery bottle (04), wherein the used refrigerant recovery bottle (04) is connected to the recovery port (104), and the switch control element (2) of the recovery channel (14), the high-pressure channel (11), and the low-pressure channel (12) is opened to achieve efficient and environmentally friendly recovery of the used refrigerant; A vacuum pump (05), the vacuum pump (05) being connected to the vacuum port (105) and opening the switch control element (2) of the vacuum channel (15), the high-pressure channel (11), and the low-pressure channel (12) to achieve rapid vacuuming of the refrigeration system; A new agent storage bottle (06) is connected to the filling port (103), and the new agent storage bottle (06) is attached to the weighing device (061) below, and the switch control component (2) of the filling channel (13) is opened to achieve accurate filling of the new refrigerant.

2. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 1, characterized in that: The high-pressure inlet and outlet (101) and the low-pressure inlet and outlet (102) are both provided with pressure gauges (3); Or the high-pressure pipe (02) and the low-pressure pipe (03) are pipes of different colors, and the connected pressure gauge (3) and the high-pressure pipe (02) and the low-pressure pipe (03) are of the same color; Or the switch control component (2) is a manual plug valve or an electromagnetic latch.

3. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 1, characterized in that: The high-pressure inlet and outlet (101) and the low-pressure inlet and outlet (102) are arranged symmetrically up and down or left and right on the front end surface of the main block (1), and the high-pressure duct (11), the low-pressure duct (12), and the filling duct (13) are axial holes and are arranged in an array about a central circumference; The filling channel (13) is directly connected to the high-pressure inlet and outlet (101) at the front end, the high-pressure channel (11) is connected to the high-pressure inlet and outlet (101) through a chordal short tube (16), and the low-pressure channel (12) is connected to the low-pressure inlet and outlet (102) through a chordal short tube (16).

4. The device for replacing energy-saving, environmentally friendly and high-efficiency refrigerant for air conditioner according to claim 3, characterized in that: The upper surface of the main block (1) is provided with a circular positioning groove (18) having the same contour as the lower end of the new agent storage bottle (06), the weighing device (061) is fixed to one side of the lower groove wall of the positioning groove (18), the vertical center hole of the positioning groove (18) is a filling port (103), and the filling port (103) is vertically connected to the filling channel (13) below; The vacuum port (105) is a horizontal port, the inner end of which is directly connected to the vacuum duct (15) in the front and the outer end of which is connected to the vacuum pump (05) in the rear.

5. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 4, characterized in that: The recovery port (104) is a vertical port symmetrically arranged with the filling port (103), the upper end of which is connected to the vertical port of the recovery channel (14) and the lower end of which is vertically connected to the waste agent recovery bottle (04); Or the recovery port (104) is a horizontal port, the inner end of which is directly connected to the recovery channel (14) in the front and the outer end of which is connected to the old agent recovery bottle (04) in the rear.

6. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 1, characterized in that: The filling port (103), the recovery port (104), and the vacuum port (105) are three horizontal outlets on the rear end surface of the main block (1), and are connected to the old agent recovery bottle (04), the vacuum pump (05), and the new agent storage bottle (06) through the new agent filling pipe (4), the old agent recovery pipe (5), and the vacuum pipe (6).

7. The device for replacing energy-saving, environmentally friendly and high-efficiency refrigerant for air conditioner according to claim 6, characterized in that: The integrated pipe (08) further comprises an outer protective wall (080) and an inner filling layer (081), wherein the new agent filling pipe (4), the old agent recovery pipe (5), and the vacuum pipe (6) are parallel to each other and axially arranged in the outer protective wall (080), and adjacent gaps thereof are fixedly connected by the inner filling layer (081).

8. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 1, characterized in that: The new refrigerant is 2,3,3,3-tetrafluoroethylene or Learnuo refrigerant, and the compressor is a conventional compressor; Or the main block (1) is any one of polypropylene, PPSU polyphenylsulfone, PEEK polyetheretherketone, nylon, Teflon and aluminum alloy.

9. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to claim 1, characterized in that: A gripping handle (17) is provided at the lower rear end of the main block (1), a PLC control component (010) is provided in the gripping handle (17), and a control button is provided on the outer wall thereof, and the PLC control component (010) is electrically connected to the switch control component (2) and the pressure gauge (3).

10. The energy-saving, environmentally friendly and high-efficiency refrigerant replacement device for air conditioners according to any one of claims 1 to 9, characterized in that: The ends of the high-pressure pipe (02) and the low-pressure pipe (03) are directly inserted into one end of the quick-connect connector (090) of the high-seal environmentally friendly connector (09), and the other end of the quick-connect connector (090) can be directly inserted into the joints or pipe holes of the high-pressure inspection valve (001) and the low-pressure inspection valve (002) of the interference sleeve air-conditioning compressor (00); The quick-connect connector (090) is provided with a large-sized base plate (091) at the rear end and a truncated cone-shaped or bowl-shaped sealing cover (092) is slidably connected at the front end. The sealing cover (092) is made of elastic plastic. A plurality of protruding guide prisms (093) are arranged in a circumferential array on the outer wall of the quick-connect connector (090). The inner wall of the shaft hole of the sealing cover (092) is provided with a plurality of concave guide grooves (094). The guide grooves (094) are sleeved with the guide prisms (093). The spring (095) sleeved on the quick-connect connector (090) is connected to the base plate (091) at the rear end and connected to the rear end of the sealing cover (092) at the front end.

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