CN110953774B - Air conditioner refrigerant injection gun - Google Patents
Air conditioner refrigerant injection gun Download PDFInfo
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- CN110953774B CN110953774B CN201911114470.XA CN201911114470A CN110953774B CN 110953774 B CN110953774 B CN 110953774B CN 201911114470 A CN201911114470 A CN 201911114470A CN 110953774 B CN110953774 B CN 110953774B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
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Abstract
The invention discloses an air conditioner refrigerant injection gun, which comprises a gun chamber, a gun handle, a gun head, a connector, a valve core and a trigger cavity, wherein a hollow channel is arranged in the valve core, a sealing corrugated pipe and a trigger corrugated pipe are arranged in the trigger cavity, the sealing corrugated pipe is sealed and filled with a preset amount of refrigerant, a metal elastic sheet is fixed at the top of the sealing corrugated pipe, a metal gasket is fixed at the top of the trigger corrugated pipe, the trigger corrugated pipe is communicated with the gun head through a detection pipeline, the metal gasket can be driven to be contacted with the metal elastic sheet by the deformation of the trigger corrugated pipe after being pressed so as to communicate a loop, thereby the filling control device is filled to disconnect the hollow channel and the gun chamber to stop filling, the pressure in the triggering corrugated pipe just reaches the preset pressure, and because the sealing corrugated pipe and the triggering corrugated pipe are positioned in the triggering cavity, the ambient temperature is consistent, thereby realizing the automatic control of the injection amount of the refrigerant and preventing the control amount from being influenced by the temperature.
Description
Technical Field
The invention relates to air conditioner refrigerant filling equipment, in particular to an air conditioner refrigerant filling gun.
Background
For the normal operation of the air-conditioning refrigeration system, whether the refrigerant charge amount is proper or not is an important influence factor, in the actual operation, in order to control the proper refrigerant charge amount, a commonly used method is a pressure observation charge method, namely, whether the refrigerant charge amount reaches an ideal value or not is judged through the pressure of a charge pipeline, but the conventional equipment usually needs to manually close the charge equipment by manually observing a pressure value so as to control the charge amount, so that the manual consumption and errors caused by manual judgment are caused, and meanwhile, because the boiling point of the conventional commonly used air-conditioning refrigerant is low, the pressure of the refrigerant is easily influenced by different environmental temperature changes, so that the charge amount deviation is caused.
Disclosure of Invention
In view of the above, the present invention is directed to an air conditioner refrigerant injection gun, which can automatically control the refrigerant injection amount without the temperature influence.
The present invention provides an air conditioner coolant injection gun based on the above object, comprising:
a gun room;
the gun handle is fixed at the lower part of the gun chamber, an injection channel is arranged in the gun handle, and the injection channel is communicated with the interior of the gun chamber;
the gun head is fixed on one side of the gun chamber;
the connector is fixed at the outer end of the gun head and is used for connecting a connector of an air conditioner refrigerant pipeline;
the valve core is fixed at the joint of the gun head and the gun chamber, and a hollow channel is arranged in the valve core and used for communicating the gun head and the gun chamber;
the trigger cavity is fixed at the upper part of the gun chamber;
the sealing corrugated pipe is fixed in the trigger cavity and is sealed and filled with a preset amount of refrigerant;
the metal elastic sheet is fixed at the top of the sealing corrugated pipe;
the trigger corrugated pipe is fixed in the trigger cavity and communicated with the gun head through a detection pipeline;
the metal gasket is fixed at the top of the trigger corrugated pipe, and the metal gasket can be driven to be in contact with the metal elastic sheet by the deformation of the trigger corrugated pipe after being pressed so as to conduct a loop;
fill and fill filling controlling means, fix the one side of keeping away from the rifle head on the rifle chamber, include:
the piston cylinder is fixed on the gun chamber;
the inner end of the piston rod can reciprocate in the piston cylinder, and the outer end of the piston rod is inserted into the gun chamber;
the suction device is fixed in the piston cylinder and is connected in the loop in series;
the elastic piece is fixed in the piston cylinder;
when the pressure in the trigger corrugated pipe is smaller than the pressure in the sealing corrugated pipe, the loop is broken, the piston rod moves to the outer side of the gun chamber under the action of the elastic piece, the hollow channel and the gun chamber are communicated, and injection is started, the loop is communicated until the pressure in the trigger corrugated pipe reaches the pressure in the sealing corrugated pipe, the suction device is triggered, so that the piston rod is sucked towards the inner side of the gun chamber, the hollow channel and the gun chamber are disconnected, and the injection is stopped.
Preferably, the attraction device is a pair of iron cores which are respectively fixed at the inner end of the piston rod and one side of the piston cylinder close to the gun chamber, winding wires are wound outside one of the iron cores, and the winding wires are connected in series in the loop.
Preferably, the connector is sleeved with a clamping sleeve, the clamping sleeve can slide along the outer surface of the connector, and when the connector is inserted into the connecting connector, the clamping sleeve can automatically slide and reset towards the outer side of the gun head so as to lock the connector.
Preferably, the ejection device is a pair of electromagnetic cores which are respectively and oppositely fixed on the clamping sleeve and the gun handle, wherein an electromagnetic coil is wound outside one of the electromagnetic cores, and the electromagnetic coil is connected in series in the loop.
Preferably, the lower end of the cutting sleeve is fixed with a trigger.
Preferably, the trigger is arcuate in curvature toward the grip.
Preferably, a buzzer is connected in series in the loop.
Preferably, the injection passage is provided with a shut-off valve for externally controlling opening and closing of the injection passage.
Preferably, the hollow passage is multiple and has an inner diameter of less than 2 mm.
Preferably, a normally closed interface is fixed on the outer side of the trigger cavity and is communicated with the sealing corrugated pipe through a calibration pipeline.
From the above, the air-conditioning refrigerant injection gun designed by the invention is provided with the gun chamber, the gun handle is fixed at the lower part of the gun chamber so as to be convenient for holding when a person operates and controls the air-conditioning refrigerant injection gun, the injection channel is arranged in the gun handle and is communicated with the interior of the gun chamber, the gun head is fixed at one side of the gun chamber, the connector is fixed at the outer end of the gun head and is used for connecting a joint of an air-conditioning refrigerant pipeline, the valve core is fixed at the joint of the interior of the gun head and the gun chamber, the hollow channel is arranged in the valve core and is used for communicating the gun head and the gun chamber, therefore, refrigerant can sequentially pass through the injection channel, the gun chamber, the hollow channel, the gun head, the connector and the connector to realize the filling of the air-conditioning refrigerant pipeline, the trigger cavity is fixed at the upper part of the gun chamber, the sealing corrugated pipe is fixed in the trigger cavity, the sealing corrugated pipe is sealed and filled with a preset amount of refrigerant, the metal elastic sheet is fixed at the top of the sealing corrugated pipe, and the trigger corrugated pipe is fixed in the trigger cavity, the trigger corrugated pipe is communicated with the gun head through the detection pipeline, a metal gasket is fixed at the top of the trigger corrugated pipe, the metal gasket can be driven to be in contact with the metal elastic sheet by the deformation of the trigger corrugated pipe after being pressed so as to conduct a loop, the pressure of the refrigerant in the seal corrugated pipe is also known as the refrigerant pre-filled in the seal corrugated pipe is known and sealed, therefore, the metal gasket is driven to be in contact with the metal elastic sheet at the top of the seal corrugated pipe by the deformation of the trigger corrugated pipe after being pressed, and the relative positions of the seal corrugated pipe and the trigger corrugated pipe are fixed, so that the pressure in the trigger corrugated pipe and the seal corrugated pipe can be calculated, for example, the seal corrugated pipe and the trigger corrugated pipe can be set to be in the same type and specification, the bottoms of the seal corrugated pipe and the trigger corrugated pipe are fixed at the same level, the heights of the metal elastic sheet and the metal gasket are the same, the weights of the seal corrugated pipe and the trigger corrugated pipe are the same, when the metal elastic sheet and the metal gasket are in contact, because triggering the bellows and switching on through surveying pipeline and rifle head, the rifle head passes through the joint of interface connection air conditioner refrigerant pipeline, when the pressure of steerable refrigerant pipeline reaches the default from this, triggers to switch on the return circuit, keeps away from one side of rifle head on the rifle chamber and is fixed with and fills filling controlling means, include: the piston cylinder is fixed on the gun chamber, the piston rod, the inner end of the piston rod can do reciprocating motion in the piston cylinder, the outer end of the piston rod is inserted into the gun chamber, the attraction device is fixed in the piston cylinder, the attraction device is connected in series in a loop, an elastic part is fixed in the piston cylinder, the air-conditioning refrigerant pipeline generally can be vacuumized before being filled, therefore, when a joint of the air-conditioning refrigerant pipeline is connected with the gun head through an interface, the pressure in the trigger bellows is smaller than the pressure in the sealing bellows, the metal elastic sheet is not contacted with the metal gasket, the loop is broken, the piston rod moves to the outer side of the gun chamber through the action of the elastic part, the hollow channel is communicated with the gun chamber and starts to inject, the pressure in the trigger bellows gradually rises in the injection process until the pressure in the trigger bellows reaches the pressure in the sealing bellows, the loop is communicated, the attraction device is triggered, so that the piston rod is attracted towards the inner side of the gun chamber, make cavity passageway and rifle chamber break-make to stop to pour into, trigger bellows internal pressure this moment and just reach preset pressure, and because sealed bellows and trigger bellows are located triggering the intracavity together, ambient temperature is unanimous, can realize not receiving the influence of temperature to refrigerant injection volume's automatic control and controlled variable from this.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention in a circuit broken state;
FIG. 2 is an enlarged schematic view at A of FIG. 1 according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a loop in a conducting state according to an embodiment of the present invention.
In the figure: 1 gun chamber, 2 gun handles, 21 injection channel, 3 gun heads, 31 interfaces, 32 connectors, 33 clamping sleeves, 34 triggers, 4 valve cores, 41 hollow channels, 5 trigger cavities, 6 sealing corrugated pipes, 61 metal elastic sheets, 7 trigger corrugated pipes, 71 metal gaskets, 72 detection pipelines, 8 filling control devices, 81 piston cylinders, 82 piston rods, 83 suction devices, 831 iron cores, 832 winding wires, 84 elastic pieces, 9 pop-up devices, 91 electromagnetic iron cores, 92 electromagnetic coils, 10 buzzers, 11 cut-off valves, 12 normally closed interfaces and 13 calibration pipelines.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and they are not described in any more detail in the following embodiments.
An air-conditioning refrigerant injection gun comprises a gun chamber 1, a gun handle 2 is fixed at the lower part of the gun chamber 1, an injection channel 21 is arranged in the gun handle 2, the injection channel 21 is communicated with the interior of the gun chamber 1, a gun head 3 is fixed at one side of the gun chamber 1, a connector 31 is fixed at the outer end of the gun head 3 and is used for connecting a joint 32 of an air-conditioning refrigerant pipeline, a valve core 4 is fixed at the joint of the interior of the gun head 3 and the gun chamber 1, a hollow channel 41 is arranged in the valve core 4 and is used for communicating the gun head 3 and the gun chamber 1, a trigger cavity 5 is fixed at the upper part of the gun chamber 1, a sealing corrugated pipe 6 is fixed in the trigger cavity 5, the sealing corrugated pipe 6 is hermetically filled with a preset amount of refrigerant, a metal elastic sheet 61 is fixed at the top of the sealing corrugated pipe 6, a trigger corrugated pipe 7 is fixed in the trigger cavity 5, the trigger corrugated pipe 7 is communicated with the gun head 3 through a detection pipeline 72, and a metal gasket 71 is fixed at the top of the trigger corrugated pipe 7, deformation can drive metal gasket 71 and the contact of metal shrapnel 61 after triggering bellows 7 pressurized to switch on the return circuit, one side of keeping away from rifle head 3 on the rifle chamber 1 is fixed with fills annotates controlling means 8, includes: the piston cylinder 81 is fixed on the gun chamber 1, a piston rod 82, the inner end of the piston rod 82 can reciprocate in the piston cylinder 81, the outer end of the piston rod 82 is inserted into the gun chamber 1, the pull-in device 83 is fixed in the piston cylinder 81, the pull-in device 83 is connected in series in a loop, an elastic element 84 is fixed in the piston cylinder 81, when the pressure in the trigger corrugated pipe 7 is smaller than the pressure in the sealing corrugated pipe 6, the loop is broken, the piston rod 82 moves to the outer side of the gun chamber 1 through the action of the elastic element 84, the hollow channel 41 is communicated with the gun chamber 1, and the injection is started, when the pressure in the trigger corrugated pipe 7 reaches the pressure in the sealing corrugated pipe 6, the loop is conducted, and the pull-in device 83 is triggered, so that the piston rod 82 is pulled towards the inner side of the gun chamber 1, the hollow channel 41 is disconnected with the gun chamber 1, and the injection is stopped.
The invention is characterized in that a gun chamber 1 is arranged, a gun handle 2 is fixed at the lower part of the gun chamber 1 to facilitate holding when a person operates and controls the gun, an injection channel 21 is arranged in the gun handle 2, the injection channel 21 is communicated with the interior of the gun chamber 1, a gun head 3 is fixed at one side of the gun chamber 1, a connector 31 is fixed at the outer end of the gun head 3 and is used for connecting a connector 32 of an air-conditioning refrigerant pipeline, a valve core 4 is fixed at the joint of the interior of the gun head 3 and the gun chamber 1, a hollow channel 41 is arranged in the valve core 4 and is used for communicating the gun head 3 and the gun chamber 1, therefore, the refrigerant can sequentially pass through the injection channel 21, the gun chamber 1, the hollow channel 41, the gun head 3, the connector 31 and the connector 32 to realize filling of the air-conditioning refrigerant pipeline, a trigger cavity 5 is fixed at the upper part of the gun chamber 1, a sealing corrugated pipe 6 is fixed in the trigger cavity 5, the sealing corrugated pipe 6 is sealed and filled with a preset amount of refrigerant, a metal elastic sheet 61 is fixed at the top of the sealing corrugated pipe 6, a trigger bellows 7 is fixed in the trigger cavity 5, the trigger bellows 7 is communicated with the gun head 3 through a detection pipeline 72, a metal gasket 71 is fixed at the top of the trigger bellows 7, the metal gasket 71 is driven to contact with the metal elastic sheet 61 through deformation of the trigger bellows 7 after being pressed so as to conduct a loop, the pressure of the refrigerant in the seal bellows 6 is also known because the refrigerant pre-filled in the seal bellows 6 is known and sealed, therefore, the metal gasket 71 is driven to contact with the metal elastic sheet 61 at the top of the seal bellows 6 through deformation of the trigger bellows 7 after being pressed, and the relative positions of the seal bellows 6 and the trigger bellows 7 are fixed, so that the pressure in the trigger bellows 7 can be calculated, for example, the seal bellows 6 and the trigger bellows 7 can be set to be in the same type specification, and the bottoms of the seal bellows 6 and the trigger bellows 7 are fixed at the same level, metal shrapnel 61 and metal gasket 71 highly uniform and weight equal, then when metal shrapnel 61 and metal gasket 71 contact, sealing bellows 6 and trigger bellows 7 internal pressure equal, because trigger bellows 7 switches on through detecting pipeline 72 and rifle head 3, rifle head 3 passes through interface 31 and connects the joint 32 of air conditioner refrigerant pipeline, when the pressure of steerable refrigerant pipeline reaches the default, trigger and switch on the return circuit, one side of keeping away from rifle head 3 on the rifle chamber 1 is fixed with fills annotates controlling means 8, include: the piston cylinder 81 is fixed on the gun chamber 1, the piston rod 82, the inner end of the piston rod 82 can reciprocate in the piston cylinder 81, the outer end of the piston rod 82 is inserted into the gun chamber 1, the pull-in device 83 is fixed in the piston cylinder 81, the pull-in device 83 is connected in series in a loop, the elastic part 84 is fixed in the piston cylinder 81, as the process requires that the air-conditioning refrigerant pipeline generally performs vacuum pumping operation before being filled, when the joint 32 of the air-conditioning refrigerant pipeline is connected with the gun head 3 through the interface 31, the pressure in the trigger corrugated pipe 7 is smaller than the pressure in the seal corrugated pipe 6, the metal elastic sheet 61 is not contacted with the metal gasket 71, the loop is broken, the piston rod 82 moves to the outer side of the gun chamber 1 through the action of the elastic part 84, the hollow channel 41 is communicated with the gun chamber 1 and starts to be injected, the pressure in the trigger corrugated pipe 7 gradually rises in the injection process until the pressure in the trigger corrugated pipe 7 reaches the pressure in the seal corrugated pipe 6, the loop is switched on, the suction device 83 is triggered to suck the piston rod 82 towards the inner side of the gun chamber 1, the hollow channel 41 and the gun chamber 1 are disconnected to stop injection, the pressure in the trigger corrugated pipe 7 just reaches the preset pressure, and the environment temperature is consistent because the sealing corrugated pipe 6 and the trigger corrugated pipe 7 are both positioned in the trigger cavity 5, so that the automatic control of the injection amount of the refrigerant can be realized, and the control amount is not influenced by the temperature.
In the embodiment of the present invention, the attraction device 83 is a pair of iron cores 831 respectively fixed at the inner end of the piston rod 82 and one side of the piston cylinder 81 near the gun chamber 1, wherein one iron core 831 is externally wound with a winding wire 832, the winding wire 832 is connected in series in a loop, the iron core 831 wound with the winding wire 832 is magnetized by electrifying the winding wire 832, the other iron core 831 can be attracted to drive the piston rod 82 to move towards the inner side of the gun chamber 1, the winding wire 832 is de-energized, the iron core 831 wound with the winding wire 832 is demagnetized, and the piston rod 82 moves towards the outer side of the gun chamber 1 under the action of the elastic member 84 to reset.
In the embodiment of the invention, the connector 31 is sleeved with the clamping sleeve 33, the clamping sleeve 33 can slide along the outer surface of the connector 31, when the connector 32 is inserted into the connector 31, the clamping sleeve 33 can automatically slide and reset towards the outer side of the gun head 3 to lock the connector 32, the clamping sleeve 33 is operated to slide towards the inner side of the gun head 3, and the connector 32 can be pulled out after the locking is disconnected, so that the quick pulling and inserting and the fixing of the connector 31 during the filling operation are facilitated.
In the embodiment of the invention, the ejection device 9 is provided, the ejection device 9 is a pair of electromagnetic cores 91, which are respectively fixed on the clamping sleeve 33 and the gun handle 2 relatively, wherein an electromagnetic coil 92 is wound outside one of the electromagnetic cores 91, and the electromagnetic coil 92 is connected in series in a loop, therefore, when the charging reaches an automatic control amount to conduct the loop, the electromagnetic coil 92 is electrified to magnetize the electromagnetic core 91 wound with the electromagnetic coil 92, the other electromagnetic core 91 can be attracted to drive the clamping sleeve 33 to slide towards the inner side of the gun head 3, so that the locking of the joint 32 is automatically disconnected, when the joint 32 of the air conditioning refrigerant pipeline is connected through the interface 31 and starts to be charged, the loop is disconnected, the electromagnetic coil 92 is disconnected, the electromagnetic core 91 wound with the electromagnetic coil 92 is demagnetized, the clamping sleeve 33 automatically slides towards the outer side of the gun head 3 to reset to lock the joint 32, so as to realize the automatic locking and disconnection of the joint 32 when the refrigerant is injected, so as to achieve the effects of intelligent control and convenient operation.
In the embodiment of the present invention, a trigger 34 is fixed to the lower end of the ferrule 33 to facilitate the operation of the ferrule 33 sliding along the outer surface of the mouthpiece 31.
In the embodiment of the present invention, the trigger 34 is curved toward the pistol grip 2 to save labor when the ferrule 33 slides along the outer surface of the interface 31.
In the embodiment of the invention, a buzzer 10 is also connected in series in the loop, and the buzzer 10 rings when the loop is conducted, so as to achieve the effect of prompting the subsequent operation of personnel.
In the embodiment of the present invention, the injection passage 21 is provided with a shut-off valve 11 for controlling the opening and closing of the injection passage 21 from the outside, and when the injection gun is not used, the injection passage 21 can be closed by the shut-off valve 11, thereby preventing the refrigerant from leaking out through the injection gun.
In the embodiment of the invention, the hollow channels 21 are multiple, the inner diameter of each hollow channel 21 is smaller than 2mm, the inner diameter of each hollow channel 21 is designed to be thinner, the flow rate of the gas filled into the gun head 3 from the hollow channels 21 can be controlled to be lower, so that the influence of the high-flow-rate filling on the stability and accuracy of the pressure deformation triggering of the trigger bellows 7 is prevented, and meanwhile, the multiple hollow channels 21 are arranged to avoid the influence on the filling efficiency.
In the embodiment of the invention, the normally closed interface 12 is fixed on the outer side of the trigger cavity 5, the normally closed interface 12 is communicated with the sealing corrugated pipe 6 through the calibration pipeline 13, and the refrigerant can be supplemented to the sealing corrugated pipe 6 through the normally closed interface 12, so that the leakage of the refrigerant in the sealing corrugated pipe 6 after long-term use is prevented, and the injection amount is controlled inaccurately.
In the air-conditioning refrigerant injection gun disclosed by the invention, a loop is triggered through a trigger bellows 7 to control a filling control device 8, so that the automatic control of the injection amount of the refrigerant by the injection gun is realized, and the control amount is not influenced by the temperature, specifically, a gun chamber 1 is arranged, a gun handle 2 is fixed at the lower part of the gun chamber 1, an injection channel 21 is arranged in the gun handle 2, the injection channel 21 is communicated with the inside of the gun chamber 1, a gun head 3 is fixed at one side of the gun chamber 1, a connector 31 is fixed at the outer end of the gun head 3 and is used for connecting a connector 32 of an air-conditioning refrigerant pipeline, a valve core 4 is fixed at the joint of the inside of the gun head 3 and the gun chamber 1, a hollow channel 41 is arranged in the valve core 4 and is used for communicating the gun head 3 and the gun chamber 1, a trigger cavity 5 is fixed at the upper part of the gun chamber 1, a sealing bellows 6 is fixed in the trigger cavity 5, the sealing bellows 6 is sealed and filled with a preset amount of refrigerant, a metal elastic sheet 61 is fixed at the top of the sealing bellows 6, a trigger bellows 7 is fixed in the trigger cavity 5, the trigger bellows 7 is communicated with the gun head 3 through a detection pipeline 72, a metal gasket 71 is fixed on the top of the trigger bellows 7, the metal gasket 71 is driven to contact with the metal elastic sheet 61 by the deformation of the trigger bellows 7 after being pressed so as to conduct a loop, and as the refrigerant pre-filled in the sealing bellows 6 is known and sealed, the pressure of the refrigerant in the sealing bellows 6 is also known, so that the metal gasket 71 is brought into contact with the metal elastic sheet 61 at the top of the sealing bellows 6 by the deformation of the triggering bellows 7 after being pressed, and the relative positions of the sealing corrugated pipe 6 and the trigger corrugated pipe 7 are fixed, the pressure in the trigger corrugated pipe 7 can be calculated, when the pressure of steerable refrigerant pipeline reaches the default volume from this, trigger and switch on the return circuit, one side of keeping away from rifle head 3 on the rifle chamber 1 is fixed with fills and annotates controlling means 8, includes: the piston cylinder 81 is fixed on the gun chamber 1, the piston rod 82, the inner end of the piston rod 82 can reciprocate in the piston cylinder 81, the outer end of the piston rod 82 is inserted into the gun chamber 1, the pull-in device 83 is fixed in the piston cylinder 81, the pull-in device 83 is connected in series in a loop, the elastic part 84 is fixed in the piston cylinder 81, as the process requires that the air-conditioning refrigerant pipeline generally performs vacuum pumping operation before being filled, when the joint 32 of the air-conditioning refrigerant pipeline is connected with the gun head 3 through the interface 31, the pressure in the trigger corrugated pipe 7 is smaller than the pressure in the seal corrugated pipe 6, the metal elastic sheet 61 is not contacted with the metal gasket 71, the loop is broken, the piston rod 82 moves to the outer side of the gun chamber 1 through the action of the elastic part 84, the hollow channel 41 is communicated with the gun chamber 1 and starts to be injected, the pressure in the trigger corrugated pipe 7 gradually rises in the injection process until the pressure in the trigger corrugated pipe 7 reaches the pressure in the seal corrugated pipe 6, the loop is conducted, the attracting device 83 is triggered to attract the piston rod 82 towards the inner side of the gun chamber 1, the hollow channel 41 and the gun chamber 1 are disconnected, the injection is stopped, the pressure in the trigger corrugated pipe 7 just reaches the preset pressure, and the environmental temperature is consistent because the sealing corrugated pipe 6 and the trigger corrugated pipe 7 are both positioned in the trigger cavity 5, so that the automatic control of the refrigerant injection amount can be realized, and the control amount is not influenced by the temperature, wherein, the attracting device 83 is a pair of iron cores 831 which are respectively fixed at the inner end of the piston rod 82 and one side of the piston cylinder 81 close to the gun chamber 1, the winding wire 832 is wound outside one of the iron cores 831, the winding wire 832 is connected in the loop in series, the iron core 831 wound with the winding wire 832 is magnetized by electrifying the winding wire 832, the other iron core 831 can be attracted, the piston rod 82 is driven to move towards the inner side of the gun chamber 1, the winding wire 832 is disconnected, the iron core 831 wound with the winding wire is demagnetized, the piston rod 82 moves towards the outside of the gun chamber 1 to reset under the action of the elastic piece 84, in addition, a clamping sleeve 33 is sleeved on the interface 31, the clamping sleeve 33 can slide along the outer surface of the interface 31, when the connector 32 is inserted into the connecting interface 31, the clamping sleeve 33 can automatically slide towards the outside of the gun head 3 to reset so as to lock the connector 32, the clamping sleeve 33 is operated to slide towards the inside of the gun head 3, the connector 32 can be pulled out when the locking is disconnected so as to rapidly pull out and fix the interface 31 during the filling operation, meanwhile, an ejecting device 9 is arranged, the ejecting device 9 is a pair of electromagnetic cores 91 which are respectively and relatively fixed on the clamping sleeve 33 and the gun handle 2, an electromagnetic coil 92 is wound outside one of the electromagnetic cores 91, the electromagnetic coil 92 is connected in series in a loop, therefore, when the filling reaches an automatic control quantity so as to conduct the loop, the electromagnetic coil 92 is electrified to magnetize the electromagnetic core 91 wound with the electromagnetic coil 92, and can attract the other electromagnetic core 91, the locking of the joint 32 is automatically cut off by driving the clamping sleeve 33 to slide towards the inner side of the gun head 3, when the joint 32 of the air-conditioning refrigerant pipeline is connected through the interface 31 and starts to be filled, the circuit is broken, the electromagnetic coil 92 is powered off, the electromagnetic iron core 91 wound with the electromagnetic coil 92 is demagnetized, the clamping sleeve 33 automatically slides towards the outer side of the gun head 3 to reset so as to lock the joint 32, thereby realizing the automatic locking and cutting off of the joint 32 when the refrigerant is injected, the lower end of the clamping sleeve 33 is fixed with a trigger 34 to more conveniently operate the clamping sleeve 33 to slide along the outer surface of the interface 31, the trigger 34 is in an arc shape bent towards the gun handle 2 so as to save more labor when the clamping sleeve 33 slides, in addition, a buzzer 10 is connected in series in the circuit, the buzzer 10 rings when the circuit is connected so as to prompt the operator to carry out the subsequent operation, the injection channel 21 is provided with a cut-off valve 11 for controlling the opening and closing of the injection channel 21 from the outside, when the injection gun was not used, accessible shut-off valve 11 closed injection channel 21, thereby prevent that the refrigerant from leaking through the injection gun, in addition, hollow channel 21 internal diameter is less than 2mm, hollow channel 21 internal diameter is thinner, it is lower to fill the velocity of flow that rifle head 3 is filled with control hollow channel 21, it triggers bellows 7 pressurized deformation trigger's stability and accuracy to prevent that the influence is filled with to the high flow rate, and simultaneously, set up many hollow channel 21 and fill with the efficiency in order to avoid influencing, in addition, it is fixed with normally closed interface 12 to trigger the 5 outsides in chamber, normally closed interface 12 communicates with sealed bellows 6 through calibration pipeline 13, there is the seepage for preventing the refrigerant in the sealed bellows 6 after using for a long time, accessible normally closed interface 12 supplyes the refrigerant to sealed bellows 6, avoid the injection amount control inaccurate.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the invention, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (7)
1. An air conditioner refrigerant injection gun, comprising:
a gun room;
the gun handle is fixed at the lower part of the gun chamber, an injection channel is arranged in the gun handle, and the injection channel is communicated with the interior of the gun chamber;
the gun head is fixed on one side of the gun chamber;
the connector is fixed at the outer end of the gun head and is used for connecting a connector of an air conditioner refrigerant pipeline;
the valve core is fixed at the joint of the gun head and the gun chamber, and a hollow channel is arranged in the valve core and used for communicating the gun head and the gun chamber;
the trigger cavity is fixed at the upper part of the gun chamber;
the sealing corrugated pipe is fixed in the trigger cavity and is sealed and filled with a preset amount of refrigerant;
the metal elastic sheet is fixed at the top of the sealing corrugated pipe;
the trigger corrugated pipe is fixed in the trigger cavity and communicated with the gun head through a detection pipeline;
the metal gasket is fixed on the top of the trigger corrugated pipe, and the metal gasket can be driven to be in contact with the metal elastic sheet by the deformation of the trigger corrugated pipe after being pressed so as to conduct a loop;
fill and fill filling controlling means, fix keep away from on the rifle chamber one side of rifle head includes:
the piston cylinder is fixed on the gun chamber;
the inner end of the piston rod can reciprocate in the piston cylinder, and the outer end of the piston rod is inserted into the gun chamber;
the suction device is fixed in the piston cylinder and is connected in the loop in series;
the elastic piece is fixed in the piston cylinder;
when the pressure in the trigger corrugated pipe is smaller than the pressure in the sealing corrugated pipe, the loop is disconnected, the piston rod moves to the outer side of the gun chamber under the action of the elastic piece, the hollow channel and the gun chamber are communicated, and injection is started, the loop is communicated until the pressure in the trigger corrugated pipe reaches the pressure in the sealing corrugated pipe, the suction device is triggered, so that the piston rod is sucked towards the inner side of the gun chamber, the hollow channel and the gun chamber are disconnected, and the injection is stopped;
the suction device is a pair of iron cores which are respectively fixed at the inner end of the piston rod and one side of the piston cylinder close to the gun chamber, winding wires are wound outside one of the iron cores, and the winding wires are connected in series in the loop;
the connector is sleeved with a clamping sleeve, the clamping sleeve can slide along the outer surface of the connector, and when the connector is inserted into and connected with the connector, the clamping sleeve can automatically slide towards the outer side of the gun head to reset so as to lock the connector;
the ejection device is a pair of electromagnetic cores which are respectively and oppositely fixed on the clamping sleeve and the gun handle, an electromagnetic coil is wound outside one of the electromagnetic cores, and the electromagnetic coil is connected in the loop in series.
2. An air conditioning refrigerant injection gun as claimed in claim 1, wherein a trigger is fixed to a lower end of the ferrule.
3. An air conditioning refrigerant injection gun as claimed in claim 2, wherein the trigger is arcuate in shape curving toward the grip.
4. An air conditioner coolant injection lance as set forth in claim 1 further comprising a buzzer, said buzzer being connected in series in said circuit.
5. An air conditioning refrigerant injection lance as defined in claim 1 wherein the injection passage is provided with a shut-off valve for externally controlling the opening and closing of the injection passage.
6. An air conditioner coolant injection lance as claimed in claim 1, wherein the hollow passage has a plurality of inner diameters smaller than 2 mm.
7. An air conditioner refrigerant injection gun as claimed in claim 1, wherein a normally closed port is fixed to an outer side of the trigger chamber, and the normally closed port is communicated with the sealing bellows through a calibration pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911114470.XA CN110953774B (en) | 2019-11-14 | 2019-11-14 | Air conditioner refrigerant injection gun |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911114470.XA CN110953774B (en) | 2019-11-14 | 2019-11-14 | Air conditioner refrigerant injection gun |
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| CN110953774A CN110953774A (en) | 2020-04-03 |
| CN110953774B true CN110953774B (en) | 2021-09-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111964315B (en) * | 2020-08-18 | 2021-11-23 | 佛山东柳自动化科技有限公司 | Filling gun capable of reducing loss of refrigerant |
| CN112212404A (en) * | 2020-09-17 | 2021-01-12 | 安徽美博智能科技有限公司 | Adjusting device for air outlet of air conditioner |
| CN112648764A (en) * | 2020-12-21 | 2021-04-13 | 安徽美博智能科技有限公司 | Refrigerant injection gun capable of quantitatively conveying |
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| US20160110979A1 (en) * | 2014-10-16 | 2016-04-21 | Kidde Technologies, Inc. | Pneumatic detector assembly with bellows |
| CN106472466A (en) * | 2015-08-31 | 2017-03-08 | 哈尔滨派腾农业科技有限公司 | A kind of agricultural production Pesticides flusher |
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