CN215983383U - Refrigerant charging device and refrigeration equipment - Google Patents
Refrigerant charging device and refrigeration equipment Download PDFInfo
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- CN215983383U CN215983383U CN202122513675.4U CN202122513675U CN215983383U CN 215983383 U CN215983383 U CN 215983383U CN 202122513675 U CN202122513675 U CN 202122513675U CN 215983383 U CN215983383 U CN 215983383U
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Abstract
The utility model provides a refrigerant charging device and refrigeration equipment. The refrigerant charging device is used for charging refrigerant into the refrigeration equipment. The refrigerant charging device includes: the tank body is used for containing a refrigerant; the first interface is arranged on the tank body and is used for being connected with a low-pressure side pipeline of the refrigeration equipment; and the second interface is arranged on the tank body and is used for being connected with a high-pressure side pipeline of the refrigeration equipment. The utility model solves the technical problem of low refrigerant filling efficiency of the refrigerant filling device adopted in the related technology, and the effect of improving the refrigerant filling efficiency can be realized by the utility model.
Description
Technical Field
The utility model relates to the technical field of air conditioners, in particular to a refrigerant filling device and refrigeration equipment.
Background
Refrigeration equipment, such as air conditioners, may be exposed to a need to be filled with refrigerant either before installation or after a certain period of use. Particularly, for the multi-split air conditioner, the installation method is complicated, and the length of the connecting pipe is long. Therefore, the multi-split air conditioner generally requires refilling of refrigerant in the after-sales process. The existing refrigerant filling method is to directly connect a refrigerant filling device (i.e. a refrigerant tank) to the low-pressure side of the multi-split system, and to fill the refrigerant by using the pressure difference between the air pressure in a liquid storage tank of the refrigerant filling device and the suction pressure of the multi-split system. However, in the case of this charging method, in a case where a pressure difference between the reservoir pressure and the suction pressure is small (for example, at a low temperature), the charging efficiency of the refrigerant is low, resulting in a poor charging effect or efficiency.
Disclosure of Invention
The utility model solves the technical problems that the existing liquid storage tank is insufficient in filling pressure and low in refrigerant filling efficiency when being filled with refrigerant.
To solve the above problems, in one aspect, the present invention provides a refrigerant charging device for charging a refrigeration apparatus with refrigerant. The refrigerant charging device includes: the tank body is used for containing a refrigerant; the first interface is arranged on the tank body and is used for being connected with a low-pressure side pipeline of the refrigeration equipment; and the second interface is arranged on the tank body and is used for being connected with a high-pressure side pipeline of the refrigeration equipment.
Compared with the prior art, the effect that this embodiment can reach is: the refrigerant filling device is connected with the refrigeration equipment, so that the refrigerant can be conveyed into the refrigeration equipment for the refrigeration equipment to use, and a better refrigeration effect is achieved. A tank in the refrigerant charging device is used to contain and store refrigerant. The refrigerant charging device further comprises a first interface and a second interface, wherein the first interface is connected with the refrigeration equipment and is used for conveying the refrigerant into the refrigeration equipment. The first interface is connected with a low-pressure side pipeline in the refrigeration equipment, and the second interface is connected with a high-pressure side pipeline of the refrigeration equipment. The first interface and the second interface on the refrigerant charging device are respectively connected with the low-pressure side pipeline and the high-pressure side pipeline on the refrigeration equipment, so that the refrigerant can be sent into the refrigeration equipment by utilizing pressure difference, the problem that the refrigerant cannot be charged into the refrigeration equipment due to insufficient pressure in the tank body is avoided, the conveying efficiency of the refrigerant charged into the refrigeration equipment is improved, the refrigerant can be effectively sent into the refrigeration equipment, and the conveying and charging efficiency of the refrigerant to the refrigeration equipment is improved.
In one embodiment of the utility model, the second port is provided in an upper region relative to the first port.
The technical effect that this embodiment can reach is: the existing refrigerant charging devices have the refrigerant output port at the upper end, and the refrigerant charging devices are required to be inverted when in use. The first interface is used as a refrigerant output port and is arranged at the lower part relative to the second interface, the refrigerant charging device can realize the charging of the refrigerant without being placed upside down when in use, and the charging effect is better under the double actions of gravity and pressure.
In one embodiment of the present invention, the refrigerant charging device further includes: the check valve is arranged between the first connector and the tank body.
The technical effect that this embodiment can reach is: the check valve ensures that the first interface, the second interface and the refrigeration equipment cannot be reversely connected during the use process of the refrigerant charging device. If the check valve is not added, the refrigerant charging device is reversely connected and then reversely pressurized, and the refrigerant output state is changed into a gas state. In actual use, when the refrigerant charging device is connected reversely by misoperation, the refrigerant charging device cannot play a refrigeration role because the check valve limits the flow direction of the refrigerant, an operator is reminded of finding, and the refrigerant cannot be wasted due to connection.
In one embodiment of the present invention, the refrigerant charging device further includes: the first pipeline is used for connecting the first interface with the low-pressure side pipeline; the first control component is arranged on the first pipeline and used for controlling the on-off of the first pipeline.
The technical effect that this embodiment can reach is: by providing the first line between the first port and the low-pressure side line, it is possible to realize that the refrigerant enters the low-pressure side line from the first port through the first line. In addition, the first control component is arranged on the first pipeline, so that the first control component can control whether the refrigerant is filled or not, the first control component is opened when the refrigerant is filled, and the first control component is closed when the refrigerant is stopped being filled.
In one embodiment of the utility model, the first control component is an electronic expansion valve; or the first control part comprises a first electromagnetic valve and a first capillary, and the first electromagnetic valve is arranged between the first capillary and the first interface.
The technical effect that this embodiment can reach is: and if the first electromagnetic valve control system can add liquid, the first electromagnetic valve is opened when the refrigerant needs to be added, and after the refrigerant is added, the first electromagnetic valve is closed to stop adding. The first capillary tube has the effect of throttling, and the first capillary tube is arranged to prevent liquid refrigerant from directly entering the refrigeration equipment, so that liquid impact risk is avoided.
In one embodiment of the present invention, the refrigerant charging device further includes: the second pipeline is used for connecting the second interface with the high-pressure side pipeline; and the second control component is arranged on the second pipeline and is used for controlling the on-off of the second pipeline.
The technical effect that this embodiment can reach is: the second pipeline is arranged between the second interface and the high-pressure side pipeline, so that the pressure of the exhaust pressure of the refrigeration equipment can be generated in the refrigerant charging device to the refrigerant, and the refrigerant can conveniently enter the refrigeration equipment. In addition, by providing the second control means in the second pipe, it is possible to control whether or not the refrigerant is pressurized by the second control means, and when the refrigerant is pressurized, the second control means is turned on, and when the pressurization is stopped, the second control means is turned off.
In one embodiment of the utility model, the second control component is an electronic expansion valve; or the second control part comprises a second electromagnetic valve and a second capillary tube, and the second capillary tube is arranged between the second electromagnetic valve and the second interface.
The technical effect that this embodiment can reach is: and (4) whether the second electromagnetic valve control system can pressurize or not, opening the second electromagnetic valve when pressurization is needed, closing the second electromagnetic valve after pressurization is finished, and stopping pressurization. The second capillary has the effect of step-down, is provided with first capillary can avoid the discharge pressure too high, directly connects into refrigerant filling device in, has the safety risk.
In another aspect, the present invention provides a refrigerating apparatus for connection with a refrigerant charging device of any one of the above, the refrigerating apparatus comprising: the compressor is respectively connected with the low-pressure side pipeline and the high-pressure side pipeline; the low-pressure side pipeline is provided with a third connector; the high-pressure side pipeline is provided with a fourth connector; the third interface is used for being connected with the first interface, and the fourth interface is used for being connected with the second interface.
The technical effect that this embodiment can reach is: the low-pressure side pipeline is used for conveying low-temperature low-pressure refrigerant into the compressor, and the high-pressure side pipeline is used for discharging high-temperature high-pressure gas from the compressor. The third interface is used for being connected with the first interface of the refrigerant charging device so as to be convenient for conveying the refrigerant, and the fourth interface is used for being connected with the second interface of the refrigerant charging device so as to be convenient for pressurizing the refrigerant and increasing the charging efficiency of the refrigerant.
In one embodiment of the present invention, the compressor includes an inlet connected to the low-side line, and the refrigeration appliance further includes: and the gas-liquid separator is arranged between the inlet and the third interface.
The technical effect that this embodiment can reach is: by arranging the gas-liquid separator between the inlet and the third interface, the refrigerant which comes from the refrigerant filling device and enters the refrigeration equipment through the third interface can be subjected to gas-liquid separation by the gas-liquid separator.
In one embodiment of the present invention, the compressor includes an outlet connected to the high pressure side pipe, and the refrigerating apparatus further includes: and the oil separator is arranged between the outlet and the fourth interface.
The technical effect that this embodiment can reach is: the oil separator is arranged between the outlet and the fourth interface, so that the refrigerant entering the refrigerant filling device through the fourth interface can be subjected to oil-gas separation in advance by the oil separator.
After the technical scheme of the utility model is adopted, the following technical effects can be achieved:
(1) the utility model adopts the refrigerant filling device, the refrigerant is not required to be inverted during filling, and the check valve is added to prevent reverse connection;
(2) the utility model also provides a refrigeration device with pressurization control, which can ensure the refrigerant filling speed and improve the installation or maintenance efficiency under the low-temperature condition that the pressure in the refrigerant filling device is smaller than the pressure difference of a low-pressure side pipeline.
Drawings
FIG. 1 is a schematic view showing the connection and cooperation of a refrigerant charging device and a refrigerating apparatus;
fig. 2 is a schematic view of a structure of a refrigerant charging device;
FIG. 3 is a flowchart illustrating steps of a method for controlling a refrigerant charging device;
FIG. 4 is a second flowchart of the steps of a method for controlling a refrigerant charging device;
FIG. 5 is a third flowchart of the steps of a method for controlling a refrigerant charging device;
fig. 6 is a flowchart showing the fourth step of the control method of the refrigerant charging device.
Description of reference numerals:
100-refrigerant charging device; 110-a tank body; 120-a first interface; 130-a second interface; 140 — a first conduit; 150-a first control component; 151-first solenoid valve; 152-a first capillary; 160-a second conduit; 170-a second control component; 171-a second solenoid valve; 172-a second capillary; 180-a one-way valve; 200-a refrigeration device; 210-low pressure side line; 211-a third interface; 212-a fourth interface; 220-high pressure side pipeline; 230-a compressor; 231-an inlet; 232-outlet; 240-gas-liquid separator; 250-oil separator.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
[ first embodiment ] A method for manufacturing a semiconductor device
The present invention provides a refrigerant-filling device 100, and referring to fig. 1 and 2, the refrigerant-filling device 100 is used for filling a refrigerating apparatus 200 with refrigerant, and the refrigerant-filling device 100 includes: a tank 110, the tank 110 being for containing a refrigerant; the first connector 120 is arranged on the tank 110, and is used for connecting with a low-pressure side pipeline 210 of the refrigeration equipment 200; and a second connector 130, wherein the second connector 130 is arranged on the tank 110 and is used for connecting with a high-pressure side pipeline 220 of the refrigeration equipment 200.
In the present embodiment, referring to fig. 1, the refrigeration apparatus 200 is used for refrigeration or ambient temperature regulation. For example, the refrigeration device 200 may be an air conditioner. In the actual use process, the refrigeration device 200 needs to be filled with refrigerant to achieve better refrigeration effect. Particularly for refrigeration units 200 such as multi-split air conditioners, which typically require refrigerant charging in an after-market process. Accordingly, the refrigerant charging device 100 serves to charge the refrigerating apparatus 200 with refrigerant. When the refrigeration apparatus 200 requires refrigerant charging, the refrigerant charging device 100 and the refrigeration apparatus 200 may be connected to charge the refrigerant cycle system in the refrigerant charging device 100 with refrigerant. The refrigerant charging device 100 can press the refrigerant into the refrigeration equipment 200 by the gravity of the liquid refrigerant in the tank 110 to charge the refrigerant; when the charging is completed, the connection between the refrigeration apparatus 200 and the refrigerant charging device 100 may be disconnected, and the charging may be stopped.
In the present embodiment, referring to fig. 2, the refrigerant charging device 100 includes a tank 110, a first port 120, and a second port 130. The tank 110 of the refrigerant charging device 100 is used to contain and store refrigerant, and the tank 110 has good sealability and can prevent refrigerant from overflowing from the tank 110.
Further, the first port 120 is an outlet of the refrigerant in the tank 110, and the first port 120 is connected to the refrigeration equipment 200, and the refrigerant can be delivered from the refrigerant charging device 100 to the refrigeration equipment 200 through the first port 120. The second port 130 is a pressurization port, the second port 130 is also connected with the refrigeration equipment 200, the second port 130 receives pressure from the refrigeration equipment 200, and the refrigerant is subjected to the pressure at the second port 130, so that the refrigerant in the tank 110 enters the first port 120 more quickly through the pressure difference, and is conveyed into the refrigeration equipment 200.
Referring to fig. 1, the first port 120 needs to be connected to the low-pressure side line 210 of the refrigeration apparatus 200 to ensure smooth filling of the refrigerant. The second port 130 needs to be connected to the high-pressure side line 220 of the refrigeration apparatus 200. The second port 130 is connected to the high pressure side pipe 220 to receive high pressure from the refrigeration apparatus 200 and apply pressure to the refrigerant in the tank 110, and the first port 120 is connected to the low pressure side pipe 210 to output low pressure refrigerant to the refrigeration apparatus 200. The first port 120 of the refrigerant charging device 100 is connected to the low-pressure side line 210 of the refrigeration equipment 200, and the second port 130 is connected to the high-pressure side line 220 of the refrigeration equipment 200. After the pipe connection is completed, the refrigerant forms a pressure difference in the tank 110, the first port 120 is a low-pressure end, the second port 130 is a high-pressure end, and the refrigerant in the tank 110 accelerates to flow to the low-pressure end and is discharged out of the tank 110 under the action of its own gravity and the gas pressure in the tank 110, so that the refrigerant is conveyed into the refrigeration equipment 200 through the pressure difference. The first interface 120 and the second interface 130 on the refrigerant charging device 100 are respectively connected with the low-pressure side pipeline 210 and the high-pressure side pipeline 220 on the refrigeration equipment 200, so that the refrigerant can be sent into the refrigeration equipment 200 by using pressure difference, the problem that the refrigerant cannot be charged into the refrigeration equipment 200 due to insufficient pressure in the tank body 110 is avoided, the conveying efficiency of the refrigerant charged into the refrigeration equipment 200 is improved, the refrigerant can be effectively sent into the refrigeration equipment 200, the refrigeration effect is improved, and the waste of the refrigerant is avoided.
[ second embodiment ]
In a specific embodiment, referring to fig. 2, the second port 130 on the refrigerant charging device 100 is provided at an upper region with respect to the first port 120.
In the present embodiment, the first port 120 is disposed at a lower portion as a refrigerant output end, and facilitates refrigerant transportation by gravity. The second port 130 is arranged on the upper portion of the first port 120, and the pressurizing end is arranged on the upper portion of the output end, so that the refrigerant can be more easily transmitted to the refrigeration equipment 200 under the action of pressurization and gravity, and the filling efficiency of the refrigerant is improved.
Further, the existing refrigerant charging devices have a refrigerant outlet at an upper end, and the refrigerant charging devices are required to be turned upside down when in use. The first port 120 in this embodiment is provided at a lower portion with respect to the second port 130 as a refrigerant outlet, and the refrigerant charging device 100 can be charged with refrigerant without being turned upside down when in use, and the charging effect is better under the dual actions of gravity and pressure.
[ third embodiment ]
In a specific embodiment, referring to fig. 2, the refrigerant charging device 100 further includes: and a check valve 180, the check valve 180 being disposed between the first port 120 and the can 110.
In this embodiment, the check valve 180 is used to control the fluid to flow in only one direction, so as to restrict the flow direction of the fluid and avoid the reverse flow. A check valve 180 is provided between the first port 120 and the tank 110 to ensure that the refrigerant flows out of the tank 110 to the first port 120. The addition of the check valve 180 ensures that the refrigerant can be discharged only in the direction from the tank 110 to the first port 120. The check valve 180 ensures that the first port 120, the second port 130 and the refrigerating apparatus 200 are not reversed during the use of the refrigerant charging device 100. If the check valve 180 is not added and the refrigerant charging device 100 is reversely pressurized, the refrigerant output state is changed into a gaseous state. In actual use, when the refrigerant charging device 100 is reversely connected due to improper operation, because the check valve 180 limits the flow direction of the refrigerant, the refrigerant charging device 100 cannot play a refrigeration role, an operator is reminded of finding, the refrigerant cannot be wasted due to reverse connection, and the safety degree of the refrigerant charging is improved.
[ fourth example ] A
In a specific embodiment, referring to fig. 1, the refrigerant charging device 100 further includes: a first pipe 140, the first pipe 140 connecting the first port 120 and the low pressure side pipe 210; and the first control component 150 is arranged on the first pipeline 140, and is used for controlling the on-off of the first pipeline 140.
In the present embodiment, the first port 120 of the refrigerant charging device 100 is connected to the low-pressure side line 210 through the first line 140. The first pipe 140 is provided with a first control unit 150, and the first control unit 150 is provided between the first connection port 120 and the low-pressure side pipe 210, and can control whether the system is filled with refrigerant. The first control part 150 is opened, and the refrigerant can be output from the first port 120, enter the low-pressure side pipe 210 through the first pipe 140, and enter the refrigeration equipment 200; the first control 150 is turned off, the first control 150 blocks the first line 140, and refrigerant cannot enter the low side line 210 and cannot enter the refrigeration unit 200.
By providing the first tube 140 between the first port 120 and the low-pressure side tube 210, the refrigerant can be introduced from the first port 120 into the low-pressure side tube 210 through the first tube 140. Further, by providing the first control member 150 in the first pipe line 140, it is possible to control whether or not the first control member 150 is filled with the refrigerant, open the first control member 150 when the refrigerant is filled, and close the first control member 150 when the refrigerant is stopped being filled.
[ fifth embodiment ]
In one particular embodiment, referring to fig. 1, the first control component 150 is an electronic expansion valve; or the first control part 150 includes a first solenoid valve 151 and a first capillary tube 152, and the first capillary tube 152 is disposed between the first solenoid valve 151 and the first pipe 140.
In the present embodiment, the first control component 150 is used for controlling whether the refrigerant is filled, and in the present embodiment, the first control component 150 may be an electronic expansion valve. The electronic expansion valve has the advantages that the flow can be accurately adjusted, when the refrigerant is stopped to be filled, the electronic expansion valve can be adjusted to enable the flow of the refrigerant on the first pipeline 140 to be zero, and when the refrigerant needs to be filled, the electronic expansion valve is adjusted to enable the refrigerant to enter the first pipeline 140 to fill the refrigeration equipment 200. During the actual refrigerant filling process, the flow rate during the refrigerant filling may need to be adjusted, and the electronic expansion valve can realize the adjustment.
Further, the first control component 150 may also be configured as a first electromagnetic valve 151 and a first capillary tube 152, referring to fig. 1, the first electromagnetic valve 151 controls whether the system can be filled with liquid, the first electromagnetic valve 151 is opened when the refrigerant needs to be filled, and after the refrigerant is filled, the first electromagnetic valve 151 is closed and the filling is stopped. The first capillary tube 152 has a throttling function, and the first capillary tube 152 is arranged to prevent liquid refrigerant from directly entering the refrigeration equipment 200, so that the risk of liquid impact occurs.
[ sixth embodiment ]
In a specific embodiment, referring to fig. 1, the refrigerant charging device 100 further includes: a second pipe 160, the second pipe 160 connecting the second port 130 and the high pressure side pipe 220; and the second control component 170 is arranged on the second pipeline 160 and used for controlling the on-off of the second pipeline 160.
In the present embodiment, the second port 130 of the refrigerant charging device 100 is connected to the high pressure side line 220 through the second line 160. The second line 160 is provided with a second control unit 170, and the second control unit 170 is provided between the second connection port 130 and the high-pressure side line 220, and can control whether or not the system pressurizes the refrigerant. The high-pressure side pipe 220 is communicated with the exhaust gas of the refrigeration equipment 200, and when the refrigeration equipment 200 operates, the exhaust pressure is high, so that the refrigerant is pressurized. The discharge pressure of the refrigerating apparatus 200 is introduced into the second line 160 through the high-pressure side line 220 by opening the second control part 170, and finally the refrigerant in the refrigerant charging device 100 is pressurized. The second control part 170 is closed, the second control part 170 blocks the second line 160, and the pressure in the high pressure side line 220 cannot enter the second line 160 nor the refrigerant charging device 100, thereby generating no pressure to the refrigerant.
By providing the second line 160 between the second connection port 130 and the high-pressure side line 220, the discharge pressure of the refrigeration device 200 can be introduced into the refrigerant charging device 100 to generate pressure on the refrigerant, so as to facilitate the introduction of the refrigerant into the refrigeration device 200. Further, by providing the second control member 170 in the second pipe 160, it is possible to control whether or not the refrigerant is pressurized by the second control member 170, open the second control member 170 when the pressurization is performed, and close the second control member 170 when the pressurization is stopped.
[ seventh example ]
In one particular embodiment, referring to fig. 1, the second control component 170 is an electronic expansion valve; or the second control part 170 includes a second solenoid valve 171 and a second capillary 172, and the second solenoid valve 171 is disposed between the second capillary 172 and the second pipe 160.
In the present embodiment, the second control part 170 is used to control whether to pressurize the refrigerant, and in the present embodiment, the second control part 170 may be an electronic expansion valve. The electronic expansion valve has the advantages that the flow rate can be accurately adjusted, the electronic expansion valve can be adjusted when the pressurization is stopped, so that the exhaust pressure on the second pipeline 160 is zero, and when the pressurization is needed, the electronic expansion valve is adjusted, so that the exhaust gas of the instruction device 200 enters the second pipeline 160 to pressurize the refrigerant.
Further, the second control unit 170 may also be provided with a second electromagnetic valve 171 and a second capillary 172, and referring to fig. 1, the second electromagnetic valve 171 controls whether the system can be pressurized, the second electromagnetic valve 171 is opened when pressurization is required, and the second electromagnetic valve 171 is closed after pressurization is completed, and pressurization is stopped. The second capillary tube 172 has a pressure reducing function, and the provision of the first capillary tube 152 can prevent the discharge pressure from being excessively high and directly reaching the refrigerant charging device 100, which poses a safety risk.
[ eighth embodiment ]
In a specific embodiment, referring to fig. 1, the present invention further provides a refrigerating apparatus 200 for connection with the refrigerant charging device 100 of any one of the above embodiments, the refrigerating apparatus 200 comprising: a compressor 230, the compressor 230 being connected to the low pressure side pipe 210 and the high pressure side pipe 220, respectively; the low-pressure side pipeline 210, the low-pressure side pipeline 210 is provided with a third interface 211; the high-pressure side pipeline 220, the high-pressure side pipeline 220 is provided with a fourth interface 212; the third interface 211 is configured to be connected to the first interface 120, and the fourth interface 212 is configured to be connected to the second interface 130.
In this embodiment, the refrigeration apparatus 200 is used for refrigeration or temperature adjustment, the compressor 230 is a core refrigeration component in the refrigeration apparatus 200, and heat exchange can be realized by the compressor 230 to achieve a refrigeration effect. In the refrigerant circulation using the compressor 230, the compressor 230 is provided with an inlet 231 and an outlet 232, the inlet 231 is used for allowing the low-temperature and low-pressure refrigerant to enter the compressor 230, and the outlet 232 is used for allowing the compressor 230 to discharge the high-temperature and high-pressure refrigerant. A low-side line 210 connected to an inlet 231 for delivering refrigerant into the compressor 230; the high-pressure side pipe 220 is connected to an outlet 232 for discharging high-temperature and high-pressure gas from the compressor 230. Further, the low-pressure side pipe 210 is provided with a third connection port 211, the third connection port 211 is used for connecting with the first connection port 120, and the refrigerant flows out from the first connection port 120, passes through the third connection port 211, and finally enters the low-pressure side pipe 210. The high-pressure side pipeline 220 is provided with a fourth interface 212, the fourth interface 212 is used for connecting with the second interface 130, and high-temperature and high-pressure gas enters the high-pressure side pipeline 220 through an outlet 232 and enters the second interface 130 from the fourth interface 212 to pressurize the refrigerant.
In this embodiment, the compressor 230 is a core component of the refrigeration apparatus 200, and realizes heat exchange to achieve a refrigeration effect. The compressor 230 is provided with an inlet 231 for introducing a low-temperature and low-pressure refrigerant into the compressor 230, an outlet 232 for discharging a high-temperature and high-pressure gas, a low-pressure side line 210 for supplying the low-temperature and low-pressure refrigerant into the compressor 230, and a high-pressure side line 220 for supplying the high-temperature and high-pressure gas into the refrigerant charging device 100 to pressurize the refrigerant. The third port 211 is adapted to be connected to the first port 120 of the refrigerant charging device 100 to deliver the refrigerant, and the fourth port 212 is adapted to be connected to the second port 130 of the refrigerant charging device 100 to pressurize the refrigerant, thereby increasing the charging efficiency of the refrigerant.
[ ninth example ] A
In a particular embodiment, referring to fig. 1, the refrigeration appliance 200 further comprises: and a gas-liquid separator 240, wherein the gas-liquid separator 240 is arranged between the inlet 231 and the third interface 211.
In a particular embodiment, referring to fig. 1, the refrigeration appliance 200 further comprises: an oil separator 250, the oil separator 250 disposed between the outlet 232 and the fourth interface 212.
In the present embodiment, the gas-liquid separator 240 is configured to convert a liquid substance into a gas state, and the gas-liquid separator 240 is disposed between the inlet 231 and the third interface 211, and is capable of converting the refrigerant conveyed on the low-pressure side pipeline 210 into a gas state, so as to facilitate conveying the gaseous refrigerant to the compressor 230. The oil separator 250 separates and recovers oil from the gas discharged from the compressor 230, and the oil separator 250 is provided between the outlet 232 and the fourth port 212 to ensure that the refrigerant enters the high-pressure side pipe 220 without oil after being discharged from the compressor. In this embodiment, the gas-liquid separator 240 feeds the gaseous refrigerant into the compressor 230, and the oil separator 250 separates and recovers oil in the high-temperature and high-pressure gas discharged from the compressor 230.
It should be noted that the gas-liquid separator 240 is disposed between the inlet 231 and the third interface 211 to ensure that the refrigerant, which is from the refrigerant charging device 100 and enters the refrigeration equipment 200 through the third interface 211, can be subjected to gas-liquid separation by the gas-liquid separator 240. The present invention provides the oil separator 250 between the outlet 232 and the fourth port 212 to ensure that the refrigerant entering the refrigerant charging device 100 via the fourth port 212 can be previously subjected to oil-gas separation by the oil separator 250.
[ tenth embodiment ]
In a specific embodiment, referring to fig. 3, the present invention provides a method of controlling a refrigerant charging device 100, for controlling the refrigerant charging device 100 in any of the above embodiments, the method comprising:
step S100, judging whether pressurization filling is needed or not according to the tank body pressure of a refrigerant filling device and the suction pressure of refrigeration equipment;
step S200, under the condition that pressurization and filling are not needed, controlling a first interface to be communicated with a low-pressure side pipeline;
and step S300, controlling the second interface to be communicated with a high-pressure side pipeline and controlling the first interface to be communicated with a low-pressure side pipeline under the condition that pressurization and filling are needed.
In the present embodiment, the refrigerant charging device 100 is connected to the refrigeration apparatus 200, and the refrigerant charging device 100 charges the refrigeration apparatus 200 with refrigerant. In the process of charging the refrigerant, step S100 is first performed to determine whether to perform the pressurized charging of the refrigerant according to the suction pressure in the refrigeration apparatus 200. If the pressure charging is required, step S300 is performed to control the second port 130 to be connected to the high-pressure side pipe 220, and after the connection, the high-temperature and high-pressure gas can enter the refrigerant charging device 100 through the high-pressure side pipe 220 to pressurize the refrigerant, thereby improving the efficiency of delivering the refrigerant to the compressor 230. If the pressurized charging is not required, step S200 is performed, only the first port 120 and the low pressure side line 210 are turned on, the second port 130 and the high pressure side line 220 are not turned on, and the pressure in the refrigerant charging device 100 is sufficient to deliver the refrigerant into the compressor 230.
In the present embodiment, through steps S100 to S300, the refrigeration apparatus 200 can be made to select and control whether to pressurize and charge the refrigerant according to actual needs. By controlling the pressurized charging of the refrigerant under certain conditions, the pressurized charging efficiency of the refrigerant can be improved.
[ eleventh embodiment ]
In a specific embodiment, referring to fig. 4, the determining whether pressurized charging is required according to the tank pressure of the refrigerant charging device and the suction pressure of the refrigeration equipment in step S100 includes:
step S110, obtaining the difference between the tank body pressure and the suction pressure;
step S120, whether pressurization charging is needed or not is judged according to the magnitude relation between the subtraction difference and the pressure threshold value.
In the present embodiment, a pressure threshold P is set, and in steps S110 to S120, the tank pressure P is first calculatedOuter ringAnd suction pressure PsThe difference between them. If P isOuter ring-Ps>P, the difference between the tank pressure and the suction pressure is greater than a predetermined pressure threshold P, i.e., the pressure within the tank 110 is great enough to force refrigerant into the low-pressure side line 210. If P isOuter ring-Ps<P, the difference between the tank pressure and the suction pressure is smaller than a predetermined pressure threshold P, that is, the pressure in the tank 110 is insufficient, and the refrigerant cannot be pushed into the low-pressure side pipe 210. By comparing the pressure difference value, the method is more accurate, can judge according to actual data and is more reliable. In addition, in the judgment process, a threshold value is specified, and the size relation between the difference value and the threshold value is judged, so that the judgment can be more accurate.
[ twelfth embodiment ]
In a specific embodiment, referring to fig. 5, before determining whether pressurized charging is required according to the tank pressure of the refrigerant charging device and the suction pressure of the refrigeration equipment in step S100, the control method further includes:
step S410, detecting the outdoor environment temperature under the condition that the refrigeration equipment is shut down;
step S420, determining the pressure of the tank body according to the outdoor environment temperature.
In the present embodiment, the pressure P of the tank 110 is acquired through steps S410 to S420Outer ring. The refrigerant in the tank 110 is in a gas-liquid two-phase state, and the pressure of the refrigerant in the tank 110 is a saturation pressure corresponding to the temperature of the refrigerant according to the characteristics of the refrigerant. The tank 110 and the refrigerant contained therein are all ambient environmentsTherefore, step S410 is performed to obtain the outdoor ambient temperature T of the tank 110Outer ring. After the outdoor environment temperature is obtained, step S420 is performed to obtain the outdoor environment temperature TOuter ringConverted into tank pressure P corresponding to refrigerantOuter ring. The tank body pressure of the tank body 110 is determined through the environmental temperature, so that the method is more accurate, the real-time tank body pressure can be obtained according to different environmental temperatures, and the method has good environmental adaptability.
[ EXAMPLE thirteen ]
In a specific embodiment, referring to fig. 6, according to the control method in embodiment eleven and embodiment twelve, in the case where pressurized charging is required, the control method further includes:
and step S500, after the pressurization and the filling are finished, controlling the second interface to be disconnected with the high-pressure side pipeline, and controlling the first interface to be disconnected with the low-pressure side pipeline.
In the present embodiment, the refrigerant charging device 100 is connected to the refrigeration equipment 200 through the first port 120 and the second port 130, and after the refrigerant is charged under pressure, the refrigeration equipment 200 does not need to input the refrigerant, so that the connection between the refrigeration equipment 200 and the refrigerant charging device 100 needs to be cut off. The refrigerant is prevented from being refilled into the compressor 230 by disconnecting the first connector 120 from the low-pressure side pipe 210, and the high-temperature and high-pressure gas is prevented from entering the refrigerant charging device 100 by disconnecting the second connector 130 from the high-pressure side pipe 220, so that the tank 110 is prevented from generating potential safety hazards due to high pressure.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (10)
1. A refrigerant charging device (100) for charging a refrigerating apparatus (200) with a refrigerant, the refrigerant charging device (100) comprising:
a tank (110), the tank (110) being configured to contain the refrigerant;
the first interface (120) is arranged on the tank body (110) and is used for being connected with a low-pressure side pipeline (210) of the refrigeration equipment (200);
the second interface (130) is arranged on the tank body (110) and is used for being connected with a high-pressure side pipeline (220) of the refrigeration equipment (200).
2. The refrigerant charging device (100) according to claim 1, wherein the second port (130) is provided at an upper region with respect to the first port (120).
3. The refrigerant charging device (100) according to claim 1, wherein the refrigerant charging device (100) further includes:
a one-way valve (180), the one-way valve (180) being disposed between the first port (120) and the canister (110).
4. The refrigerant charging device (100) according to any one of claims 1 to 3, wherein the refrigerant charging device (100) further includes:
a first line (140), the first line (140) being used to connect the first connection (120) with the low-pressure-side line (210);
the first control component (150) is arranged on the first pipeline (140) and used for controlling the on-off of the first pipeline (140).
5. The refrigerant charging device (100) according to claim 4,
the first control component (150) is an electronic expansion valve; or
The first control component (150) comprises a first electromagnetic valve (151) and a first capillary tube (152), and the first electromagnetic valve (151) is arranged between the first capillary tube (152) and the first interface (120).
6. The refrigerant charging device (100) according to any one of claims 1 to 3, wherein the refrigerant charging device (100) further includes:
a second line (160) for connecting the second connection (130) to the high-pressure-side line (220);
and the second control component (170) is arranged on the second pipeline (160) and used for controlling the on-off of the second pipeline (160).
7. The refrigerant charging device (100) according to claim 6,
the second control part (170) is an electronic expansion valve; or
The second control member (170) includes a second solenoid valve (171) and a second capillary (172), and the second capillary (172) is provided between the second solenoid valve (171) and the second port (130).
8. A refrigerating apparatus (200) for connection with a refrigerant charging device (100) as recited in any one of claims 1 to 7, said refrigerating apparatus (200) comprising:
a compressor (230), the compressor (230) being connected to the low-pressure side pipe (210) and the high-pressure side pipe (220), respectively;
the low-pressure side pipeline (210), the low-pressure side pipeline (210) is provided with a third interface (211);
the high-pressure side pipeline (220) is provided with a fourth interface (212) on the high-pressure side pipeline (220);
wherein the third interface (211) is configured to be connected to the first interface (120), and the fourth interface (212) is configured to be connected to the second interface (130).
9. The refrigeration apparatus (200) of claim 8, wherein the compressor (230) includes an inlet (231) connected to the low-side conduit (210), the refrigeration apparatus (200) further comprising:
a gas-liquid separator (240), the gas-liquid separator (240) being disposed between the inlet (231) and the third interface (211).
10. The refrigeration apparatus (200) of claim 8, wherein the compressor (230) includes an outlet (232) connected to the high-side line (220), the refrigeration apparatus (200) further comprising:
an oil separator (250), the oil separator (250) disposed between the outlet (232) and the fourth interface (212).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122513675.4U CN215983383U (en) | 2021-10-19 | 2021-10-19 | Refrigerant charging device and refrigeration equipment |
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| CN202122513675.4U CN215983383U (en) | 2021-10-19 | 2021-10-19 | Refrigerant charging device and refrigeration equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812023A (en) * | 2022-05-09 | 2022-07-29 | 上海理工大学 | Mixed working medium filling and adjusting system |
| CN115900152A (en) * | 2022-12-08 | 2023-04-04 | 江苏拓米洛高端装备股份有限公司 | Refrigerant filling method and refrigerant filling device |
| CN114812023B (en) * | 2022-05-09 | 2024-05-31 | 上海理工大学 | Mixed working medium filling adjusting system |
-
2021
- 2021-10-19 CN CN202122513675.4U patent/CN215983383U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812023A (en) * | 2022-05-09 | 2022-07-29 | 上海理工大学 | Mixed working medium filling and adjusting system |
| CN114812023B (en) * | 2022-05-09 | 2024-05-31 | 上海理工大学 | Mixed working medium filling adjusting system |
| CN115900152A (en) * | 2022-12-08 | 2023-04-04 | 江苏拓米洛高端装备股份有限公司 | Refrigerant filling method and refrigerant filling device |
| CN115900152B (en) * | 2022-12-08 | 2023-12-19 | 江苏拓米洛高端装备股份有限公司 | Refrigerant filling method and refrigerant filling device |
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Effective date of registration: 20221019 Address after: 315191 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee after: NINGBO AUX ELECTRIC Co.,Ltd. Patentee after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315100 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Patentee before: NINGBO AUX ELECTRIC Co.,Ltd. Patentee before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |