CN108167505A - A kind of refrigerant quantifies digital display meter group - Google Patents
A kind of refrigerant quantifies digital display meter group Download PDFInfo
- Publication number
- CN108167505A CN108167505A CN201810161834.9A CN201810161834A CN108167505A CN 108167505 A CN108167505 A CN 108167505A CN 201810161834 A CN201810161834 A CN 201810161834A CN 108167505 A CN108167505 A CN 108167505A
- Authority
- CN
- China
- Prior art keywords
- refrigerant
- connecting rod
- hole
- valve body
- digital display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003507 refrigerant Substances 0.000 title claims abstract description 103
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 54
- 230000007246 mechanism Effects 0.000 claims description 18
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 12
- 239000010959 steel Substances 0.000 description 12
- 238000005429 filling process Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 7
- 238000003825 pressing Methods 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- 230000008676 import Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/12—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing
- G01G3/13—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a solid body stressed by pressure or tension during weighing having piezoelectric or piezoresistive properties
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The present invention provides a kind of refrigerants to quantify digital display meter group, it solves the problems, such as that existing refrigerant digital display meter group filling precision is bad.This refrigerant quantifies solenoid valve, check weighing module and the control unit that digital display meter group includes housing and is set in housing, solenoid valve includes the valve body with refrigerant injection hole and refrigerant tap, check weighing module includes strip weight sensor, and control unit and weight sensor are located at valve body the upper side and lower side respectively；It is equipped with upper connecting rod and lower link above and below housing vertically respectively, upper connecting rod and lower link are in direct rod shape and the two position face, the upper end of upper connecting rod and the lower end of lower link are respectively connected with hook, and the lower end of upper connecting rod and the upper end of lower link are extend into housing, upper connecting rod and valve body are fixedly connected with, one end of weight sensor is fixedly connected with valve body, and the extrusion that weight sensor can be squeezed when lower link stress is equipped between the upper end of lower link and the other end of weight sensor.The present invention has the advantages that filling is with high accuracy.
Description
Technical Field
The invention relates to a refrigerant filling device, in particular to a refrigerant quantitative digital display meter set.
Background
The refrigerant digital display meter group generally refers to a device used for filling refrigerants by people, and refrigerants can be added to refrigeration equipment such as air conditioners, freezers and the like at ordinary times.
The present refrigerant digital display meter group is a refrigerant quantitative filling device disclosed in chinese patent library (application number: 200910074376.6, respectively; publication No.: CN 20091118A, including title quick-witted case, weighing sensor, bistable state solenoid valve, battery, singlechip and its control circuit board, first joint, second joint, display screen and operating button, first joint with the second joint respectively with bistable state solenoid valve import and export meet, singlechip and its control circuit board respectively with weighing sensor, bistable state solenoid valve, display screen, battery and operating button link to each other, increased rotary compressor, its induction port connects gradually filter, manometer and third joint, its gas outlet is connected oil separator, condenser, manometer and fourth joint respectively.
When the filling device is used, the refrigerant steel cylinder is placed on the weighing machine box, and the refrigerant is quantitatively injected through the matching of the weighing sensor, the electromagnetic valve and the single chip microcomputer, so that the filling device has the advantage of convenience in use.
However, the above-mentioned filler has a problem: the weighing sensor is completely arranged in the weighing machine box, and an operator cannot clearly judge the position of the weighing sensor, so that the refrigerant steel cylinder cannot completely apply force on the weighing sensor, and the filling precision is influenced.
Disclosure of Invention
The invention aims to provide a refrigerant quantitative digital display meter group aiming at the problems in the prior art, and solves the technical problem of how to improve the filling precision.
The purpose of the invention can be realized by the following technical scheme: a refrigerant quantitative digital display meter set comprises a shell, an electromagnetic valve, a weight measuring module and a control unit, wherein the electromagnetic valve, the weight measuring module and the control unit are all arranged in the shell, the control unit controls the electromagnetic valve to be opened and closed through the weight measuring module, the electromagnetic valve comprises a valve body with a refrigerant injection hole and a refrigerant discharge hole, and the refrigerant quantitative digital display meter set is characterized in that the weight measuring module comprises a strip-shaped weight sensor, and the control unit and the weight sensor are respectively positioned on the upper side and the lower side of the valve body; the top and the below of casing respectively the vertical connecting rod and the lower connecting rod of being equipped with, go up the connecting rod and all be straight rod-like and both positions just right with lower connecting rod, the upper end of going up the connecting rod and the lower extreme of lower connecting rod all be connected with the couple, and the lower extreme of going up the connecting rod and the upper end of lower connecting rod all stretch into in the casing, last connecting rod and valve body link firmly mutually, weight sensor's one end and valve body link firmly mutually, and be equipped with the extruded article that can extrude weight sensor when the lower connecting rod atress between the upper end of lower connecting rod and weight sensor's the other end.
The working process is as follows:
the whole meter set is suspended and fixed through the upper hook, the lower hook is suspended with a refrigerant steel cylinder, a refrigerant injection hole is communicated with the inner cavity of the refrigerant steel cylinder, and a refrigerant discharge hole is communicated with an interface of an air conditioner compressor; when hanging refrigerant steel bottle under the lower couple, the weight sensor atress produces voltage output, through gathering the voltage value, can calculate the weight that obtains the refrigerant steel bottle, and through the total weight of steel bottle before the contrast filling, the difference is done to both, can obtain the weight of the refrigerant of filling.
When filling, a user presets the required filling amount of the refrigerant, the control unit compares the weight measured by the weight sensor with a preset value after processing, and if the actual filling weight of the refrigerant just reaches the preset value, the electromagnetic valve is controlled to be closed, and the filling process is ended; otherwise, if the actual filling weight is smaller than the preset value, the electromagnetic valve is kept in an opening state, filling is continued until the actual filling value is matched with the preset value, and finally the filling process is finished. After the system is restarted, the process is circulated.
Firstly, the upper connecting rod and the lower connecting rod are arranged to be straight rod-shaped and opposite to each other in position, so that a measuring point and a suspension point are positioned on the same straight line, the balance of two stress points can be kept, the shaking in the filling process is prevented, and the filling precision is improved; secondly, go up connecting rod and weighing transducer and all link firmly with the valve body and be in the valve body both sides to reduce the distance between the above-mentioned two force points, thereby further prevent the rocking of filling in-process, then further improve the filling precision.
In the refrigerant quantitative digital display meter set, the weight sensor is obliquely arranged. The force-bearing direction of the weight sensor is vertical downward, the weight sensor is obliquely arranged by the aid of the weight sensor, so that moment is reduced by reducing the force arm, interference on the weight sensor is reduced, detection accuracy of the weight sensor is improved, and filling accuracy is further improved.
In the refrigerant quantitative digital display meter set, the weight sensor is provided with a through hole which is opposite to the lower connecting rod in a penetrating way, the upper end of the lower connecting rod penetrates through the through hole, the extrusion piece is a nut which is screwed outside the upper end of the lower connecting rod, and the nut is abutted against the weight sensor.
As another scheme, in the refrigerant quantitative digital display meter set, the weight sensor is provided with a through hole which is opposite to the lower connecting rod in a penetrating manner, the upper end of the lower connecting rod penetrates through the through hole, the extrusion piece is a pressing block which protrudes annularly on the side wall of the upper end of the lower connecting rod, and the pressing block abuts against the weight sensor.
In the refrigerant quantitative digital display meter set, the aperture of the through hole is larger than the diameter of the upper end of the lower connecting rod.
In the refrigerant quantitative digital display meter set, the valve wall of the valve body is provided with a yielding port opposite to the nut, and the nut is positioned in the yielding port. By adopting the design, the distance between the measuring point and the suspension point can be further reduced, so that the filling precision is improved.
In the refrigerant quantitative digital display meter set, the weight sensor is fixedly connected with the valve body through a screw.
In foretell refrigerant ration digital display table group, the valve body in be equipped with bleed passage, be used for communicateing refrigerant filling hole and refrigerant discharge hole overflow the passageway and be used for controlling the automatic control mechanism that overflows passageway and refrigerant filling hole and switch on or cut, bleed passage have import and export, and export and overflow the passageway intercommunication, the casing in be fixed with the exhaust tube, the one end of exhaust tube with import intercommunication, and the other end of exhaust tube stretches out outside the casing, the valve body on be equipped with and control the manual control mechanism that bleed passage switched on or cut. When the air extractor is installed, the air extracting pipe is connected with an external air extracting device; before the refrigerant is filled, the inlet and the outlet are in a conducting state, the electromagnetic valve is in a closing state, the interior of the air compressor is vacuumized through the air extractor to form negative pressure, and the inlet and the outlet are cut off after the operation is finished. The interior of the air conditioner compressor is vacuumized to form negative pressure before the refrigerant is injected, so that the refrigerant can smoothly enter the interior of the compressor, the amount of the refrigerant detained in the overflowing channel is reduced, and the injection precision is improved.
In the refrigerant quantitative digital display meter set, the air exhaust channel is arranged on one side of the flow passage and consists of a cavity, and a first hole and a second hole which are strip-shaped, one ends of the first hole and the second hole are communicated with the cavity, the other ends of the first hole and the second hole are the inlet and the outlet respectively, the second hole is positioned between the flow passage and the cavity, and the manual control mechanism is positioned in the cavity. By adopting the design, the device has the advantages of simple structure and convenience in assembly.
In foretell refrigerant ration digital display table group, manual control mechanism including locating the sealing rod in the cavity, and the outer end of sealing rod stretches out outside the casing, sealing rod and valve body looks spiro union, and form sealedly through seal structure between sealing rod and the valve body, rotate sealing rod and enable the inner of sealing rod insert in the hole one and cut hole one and cavity.
In the refrigerant quantitative digital display meter set, the side wall of the inner end of the sealing rod is a first conical surface, a second conical surface matched with the first conical surface is arranged on the wall of the first hole, and the first conical surface and the second conical surface can be tightly attached to form sealing when the sealing rod is inserted into the first hole. By adopting the design, the connection between the first opening and the cavity can be stably cut off, and the purpose of cutting off the inlet and the outlet is realized.
In the above-mentioned refrigerant quantitative digital display meter group, the seal structure including fix the sealing washer in the valve body, the sealing washer cover is outside the sealing rod, and the inside wall and the lateral wall of sealing washer closely support with sealing rod lateral wall and valve body inner wall respectively and lean on.
As another scheme, in the refrigerant quantitative digital display meter set, the manual control mechanism comprises a plug and an electromagnet which is fixed in the cavity and can drive the plug to be inserted into or extend out of the first hole.
As another scheme, in the above refrigerant quantitative digital display gauge set, the sealing structure includes an annular groove formed in the side wall of the sealing rod and a 0-shaped ring disposed in the annular groove, and an outer circumferential surface of the 0-shaped ring abuts against an inner wall of the valve body.
Compared with the prior art, the refrigerant quantitative digital display meter set has the following advantages:
1. the upper connecting rod and the lower connecting rod are both straight rod-shaped and are opposite to each other in position, so that the measuring point and the suspension point are positioned on the same straight line, the balance of the two stress points can be kept, the shaking in the filling process is prevented, and the filling precision is improved; secondly, go up connecting rod and weighing transducer and all link firmly with the valve body and be in the valve body both sides to reduce the distance between the above-mentioned two force points, thereby further prevent the rocking of filling in-process, then further improve the filling precision.
2. The force-bearing direction of the weight sensor is vertical downward, the weight sensor is obliquely arranged by the aid of the weight sensor, so that moment is reduced by reducing the force arm, interference on the weight sensor is reduced, detection accuracy of the weight sensor is improved, and filling accuracy is further improved.
3. The mechanism for vacuumizing and the mechanism for refrigerant conveying are integrated into one electromagnetic valve, so that the assembling convenience of the whole meter set can be improved, the steps in the refrigerant filling process can be shortened, the convenience of the filling process is improved, and the probability of misoperation in the filling process is reduced.
Drawings
Fig. 1 is a front view structure schematic diagram of the refrigerant quantitative digital display meter set.
Fig. 2 is a schematic structural view of the refrigerant quantitative digital display meter set in the shell.
Fig. 3 is a schematic sectional structure view of the refrigerant quantitative digital display meter set.
Fig. 4 is a schematic perspective view of the solenoid valve.
Fig. 5 is a schematic sectional structure view of the solenoid valve.
Fig. 6 is a sectional structural view of the solenoid valve in the other direction.
In the figure, 1, a housing; 2. an electromagnetic valve; 2a, a valve body; 2a1, a refrigerant injection hole; 2a2, refrigerant discharge hole; 2a3, a flow passage; 2a4, an air extraction channel; 2a4a, cavity; 2a4b, well one; 2a4c, well two; 2b, an automatic control device; 2c, yielding ports; 3. a weight sensor; 4. an upper connecting rod; 5. a lower connecting rod; 6. hooking; 7. a control unit; 8. a liquid inlet pipe; 9. a liquid discharge pipe; 10. an air exhaust pipe; 11. a sealing rod; 12. a knob; 13. a seal ring; 14. a screw; 15. an extrusion; 16. a liquid crystal screen; 17. and a key group.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1 to 6, the refrigerant quantitative digital display meter set comprises a shell 1, an electromagnetic valve 2, a weight measuring module, an upper connecting rod 4, a lower connecting rod 5, a hook 6, a control unit 7, a manual control mechanism and the like.
Wherein, solenoid valve 2, check weighing module and the control unit 7 all set up inside casing 1, and the control unit 7 controls opening and close of solenoid valve 2 through the check weighing module.
Specifically, as shown in fig. 5, the solenoid valve 2 includes a valve body 2a, and the valve body 2a has a refrigerant inlet hole 2a1 and a refrigerant outlet hole 2a2, and a flow passage 2a3 for communicating the refrigerant inlet hole 2a1 and the refrigerant outlet hole 2a 2. The valve body 2a is provided with an automatic control mechanism for controlling the conduction or the disconnection of the flow passage 2a3 and the refrigerant injection hole 2a 1. The automatic control mechanism for connecting or disconnecting the flow passage 2a3 and the refrigerant inlet 2a1 is the prior art, and is the same as the common solenoid valve 2 sold in the market, and will not be described in detail here. Or refer to a solenoid valve disclosed in chinese patent library [ application number: 201010286545.5 or a solenoid valve [ application number: 201120473371.3 ].
Further, a liquid inlet pipe 8 and a liquid outlet pipe 9 are fixed in the casing 1, wherein one end of the liquid inlet pipe 8 is communicated with the refrigerant injection hole 2a1, and the other end of the liquid inlet pipe 8 extends out of the casing 1; one end of the drain pipe 9 communicates with the refrigerant discharge hole 2a2, and the other end of the drain pipe 9 extends out of the casing 1.
As shown in FIG. 6, a bleed passage 2a4 is provided in the valve body 2a, and the bleed passage 2a4 has an inlet and an outlet. Wherein the outlet is communicated with the overflowing channel 2a 3; an exhaust tube 10 is fixed in the shell 1, one end of the exhaust tube 10 is communicated with the inlet, and the other end of the exhaust tube 10 extends out of the shell 1. The valve body 2a is provided with a manual control mechanism which can control the on-off of the suction passage 2a 4.
Specifically, as shown in fig. 6, the pumping channel 2a4 is provided on the side of the flow passing channel 2a3, and the pumping channel 2a4 is composed of a cavity 2a4a, and a first hole 2a4b and a second hole 2a4c which are both strip-shaped. One end of the first hole 2a4b and one end of the second hole 2a4c are both communicated with the cavity 2a4a, and the other end of the first hole 2a4b and the other end of the second hole 2a4c are respectively an inlet and an outlet. The second hole 2a4c is positioned between the flow passage 2a3 and the cavity 2a4a, and the manual control mechanism is positioned in the cavity 2a4a and is used for controlling the first hole 2a4b and the second hole 2a4c to be conducted or cut off. In the present embodiment, the manual control mechanism includes a sealing rod 11 disposed in the cavity 2a4a, and the outer end of the sealing rod 11 extends out of the housing 1. The sealing rod 11 is screwed with the valve body 2a, and a seal is formed between the sealing rod 11 and the valve body 2a through a sealing structure. Rotating the sealing rod 11 enables the inner end of the sealing rod 11 to be inserted into the hole one 2a4b and to intercept the hole one 2a4b and the cavity 2a4 a. Preferably, a knob 12 is attached to the outer end of the sealing rod 11 to facilitate rotation of the sealing rod 11.
Wherein,
the way in which the sealing bar 11 intercepts the hole one 2a4b and the cavity 2a4a is as follows: the inner end side wall of the sealing rod 11 is a first conical surface, a second conical surface matched with the first conical surface is arranged on the hole wall of the first hole 2a4b, and the first conical surface and the second conical surface can be tightly attached to form a seal when the sealing rod 11 is inserted into the first hole 2a4b so as to stably separate the first hole 2a4b from the cavity 2a4 a.
The sealing structure is as follows: including fixing the sealing washer 13 in valve body 2a, sealing washer 13 cover is outside sealing rod 11, and the inside wall and the lateral wall of sealing washer 13 closely support with 11 lateral walls of sealing rod and 2a inner walls of valve body respectively and lean on to form reliable sealedly between messenger's valve body 2a and the sealing rod 11, improve the stability of solenoid valve 2 work.
As shown in fig. 2 and 3, the weight measuring module includes a strip-shaped weight sensor 3, and the weight sensor 3 is disposed in an inclined manner. At this time, the weight sensor 3 and the control unit 7 are located on the upper and lower sides of the valve body 2a, respectively. An upper connecting rod 4 and a lower connecting rod 5 are respectively vertically arranged above and below the shell 1, and the upper connecting rod 4 and the lower connecting rod 5 are both in a straight rod shape and are opposite to each other in position. The upper end of the upper connecting rod 4 and the lower end of the lower connecting rod 5 are both connected with a hook 6, and the lower end of the upper connecting rod 4 and the upper end of the lower connecting rod 5 both extend into the shell 1. The lower end of the upper connecting rod 4 is fixedly connected with the valve body 2 a; one end of the weight sensor 3 is fixedly connected with the valve body 2a, and preferably, the weight sensor 3 is fixedly connected with the valve body 2a through a screw 14. A pressing member 15 capable of pressing the weight sensor 3 when the lower link 5 is applied with force is provided between the upper end of the lower link 5 and the other end of the weight sensor 3.
In this embodiment, the weight sensor 3 is provided with a through hole opposite to the lower connecting rod 5, the upper end of the lower connecting rod 5 penetrates through the through hole, the extrusion piece 15 is a nut screwed outside the upper end of the lower connecting rod 5, and the nut abuts against the weight sensor 3. Further, the aperture of the through hole is larger than the diameter of the upper end of the lower connecting rod 5; the valve wall of the valve body 2a is provided with a yielding port 2c opposite to the nut, and the nut is positioned in the yielding port 2 c.
As shown in fig. 1 and 2, the refrigerant quantitative digital display meter set further includes a liquid crystal screen 16, a key set 17, a lithium battery set, and a pressure sensor. The liquid crystal display 16 is positioned in the upper half area of the front surface of the shell 1 and is used for displaying the type of the refrigerant to be filled, the weight of the refrigerant to be filled in advance, the weight of the refrigerant to be filled, the pressure and the temperature of the refrigerant to be filled and other parameters and indicating the refrigerant filling progress and the residual electric quantity of the device; the key group 17 is positioned below the liquid crystal screen 16 and used for parameter setting before refrigerant filling and control in the filling process; a lithium battery pack is arranged on the back surface of the shell 1 and used for supplying power to the whole meter pack, and a charging interface capable of charging the lithium battery pack is arranged on the side surface of the shell 1; the pressure sensor is arranged in the liquid discharge pipe 9 and is used for measuring the refrigerant conveying pressure.
In this embodiment, the structures and connection modes of the components such as the liquid crystal display 16, the key set 17, the lithium battery pack, the charging interface, the control unit 7, the weight measuring module, the electromagnetic valve 2, and the pressure sensor are all existing, and refer to a refrigerant quantitative charging device disclosed in the chinese patent library (application No.: 2009100743766, respectively; publication No.: CN 101581520a ].
The working principle is as follows: when the air extractor is installed, the air extracting pipe 10 is connected with an external air extracting device;
before the refrigerant is filled, the inlet and the outlet are in a conducting state, the electromagnetic valve 2 is in a closing state, the interior of the air compressor is vacuumized through the air extractor to form negative pressure, and after the operation is finished, the sealing rod 11 is rotated to cut off the inlet and the outlet. The whole meter group is suspended and fixed through an upper hook 6, a refrigerant steel cylinder is suspended through a lower hook 6, a refrigerant injection hole 2a1 is communicated with the inner cavity of the refrigerant steel cylinder, and a refrigerant discharge hole 2a2 is communicated with an interface of an air conditioner compressor; when hanging refrigerant steel bottle under lower part couple 6, weight sensor 3 atress produces voltage output, through gathering voltage value, can calculate the weight that obtains the refrigerant steel bottle, and through the total weight of steel bottle before the contrast filling, difference is done to both, can obtain the weight of the refrigerant of filling.
When filling, a user presets the required filling amount of the refrigerant, the control unit 7 compares the weight measured by the weight sensor 3 with a preset value after processing, and if the actual filling weight of the refrigerant just reaches the preset value, the electromagnetic valve 2 is controlled to be closed, and the filling process is ended; otherwise, if the actual filling weight is smaller than the preset value, the electromagnetic valve 2 is kept in an opening state, filling is continued until the actual filling value is matched with the preset value, and finally the filling process is finished. After the system is restarted, the process is circulated.
Example two
The second embodiment is basically the same as the first embodiment in structure and principle, and the difference lies in: the extrusion piece 15 is a pressing block which is annularly protruded on the side wall of the upper end of the lower connecting rod 5, and the pressing block is abutted against the weight sensor 3.
EXAMPLE III
The structure and principle of the third embodiment are basically the same as those of the first embodiment, and the differences are that: the manual control mechanism comprises a plug and an electromagnet which is fixed in the cavity 2a4a and can drive the plug to be inserted into or extend out of the hole-2 a4 b.
Example four
The structure and principle of the fourth embodiment are basically the same as those of the first embodiment, and the difference lies in that: the sealing structure comprises an annular groove arranged on the side wall of the sealing rod 11 and a 0-shaped ring arranged in the annular groove, and the peripheral surface of the 0-shaped ring is abutted against the inner wall of the valve body 2 a.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. A refrigerant quantitative digital display meter set comprises a shell, an electromagnetic valve, a weight measuring module and a control unit, wherein the electromagnetic valve, the weight measuring module and the control unit are all arranged in the shell, the control unit controls the electromagnetic valve to be opened and closed through the weight measuring module, the electromagnetic valve comprises a valve body with a refrigerant injection hole and a refrigerant discharge hole, and the refrigerant quantitative digital display meter set is characterized in that the weight measuring module comprises a strip-shaped weight sensor, and the control unit and the weight sensor are respectively positioned on the upper side and the lower side of the valve body; the top and the below of casing respectively the vertical connecting rod and the lower connecting rod of being equipped with, go up the connecting rod and all be straight rod-like and both positions just right with lower connecting rod, the upper end of going up the connecting rod and the lower extreme of lower connecting rod all be connected with the couple, and the lower extreme of going up the connecting rod and the upper end of lower connecting rod all stretch into in the casing, last connecting rod and valve body link firmly mutually, weight sensor's one end and valve body link firmly mutually, and be equipped with the extruded article that can extrude weight sensor when the lower connecting rod atress between the upper end of lower connecting rod and weight sensor's the other end.
2. The refrigerant quantitative digital display meter set according to claim 1, wherein the weight sensor is disposed in an inclined manner.
3. The refrigerant quantitative digital display meter set according to claim 1 or 2, wherein the weight sensor is provided with a through hole which is opposite to the lower connecting rod in a penetrating way, the upper end of the lower connecting rod penetrates through the through hole, the extrusion piece is a nut which is screwed outside the upper end of the lower connecting rod, and the nut is abutted against the weight sensor.
4. The refrigerant quantitative digital display meter set according to claim 3, wherein the weight sensor is fixedly connected with the valve body through a screw.
5. The refrigerant quantitative digital display meter set according to claim 3, wherein the valve wall of the valve body is provided with a yielding port opposite to the nut, and the nut is positioned in the yielding port.
6. The refrigerant quantitative digital display meter set according to claim 1, wherein the valve body is provided with an air exhaust channel, an overflow channel for communicating the refrigerant injection hole and the refrigerant discharge hole, and an automatic control mechanism for controlling the communication or the cut-off of the overflow channel and the refrigerant injection hole, the air exhaust channel is provided with an inlet and an outlet, the outlet is communicated with the overflow channel, an air exhaust pipe is fixed in the housing, one end of the air exhaust pipe is communicated with the inlet, the other end of the air exhaust pipe extends out of the housing, and the valve body is provided with a manual control mechanism capable of controlling the communication or the cut-off of the inlet and the outlet.
7. The refrigerant quantitative digital display meter set according to claim 6, wherein the air exhaust channel is arranged on one side of the flow passage, the air exhaust channel is composed of a cavity and a first hole and a second hole which are both strip-shaped, one end of the first hole and one end of the second hole are both communicated with the cavity, the other ends of the first hole and the second hole are respectively an inlet and an outlet, the second hole is arranged between the flow passage and the cavity, and the manual control mechanism is arranged in the cavity.
8. The refrigerant quantitative digital display meter set according to claim 7, wherein the manual control mechanism comprises a sealing rod arranged in the cavity, the outer end of the sealing rod extends out of the shell, the sealing rod is in threaded connection with the valve body, a seal is formed between the sealing rod and the valve body through a sealing structure, and the inner end of the sealing rod can be inserted into the first hole and cut off the first hole and the cavity by rotating the sealing rod.
9. The refrigerant quantitative digital display meter set according to claim 8, wherein the side wall of the inner end of the sealing rod is a first conical surface, a second conical surface matched with the first conical surface is arranged on the wall of the first hole, and the first conical surface and the second conical surface can be tightly attached to form a seal when the sealing rod is inserted into the first hole.
10. The refrigerant quantitative digital display meter set according to claim 1, wherein the sealing structure comprises a sealing ring fixed in the valve body, the sealing ring is sleeved outside the sealing rod, and the inner side wall and the outer side wall of the sealing ring are respectively and tightly abutted against the side wall of the sealing rod and the inner wall of the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161834.9A CN108167505B (en) | 2018-02-27 | 2018-02-27 | Refrigerant quantitative digital display meter set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810161834.9A CN108167505B (en) | 2018-02-27 | 2018-02-27 | Refrigerant quantitative digital display meter set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167505A true CN108167505A (en) | 2018-06-15 |
| CN108167505B CN108167505B (en) | 2023-11-21 |
Family
ID=62511628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810161834.9A Active CN108167505B (en) | 2018-02-27 | 2018-02-27 | Refrigerant quantitative digital display meter set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167505B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060230775A1 (en) * | 2005-04-19 | 2006-10-19 | Govekar Craig F | Refrigerant charging using line having a control valve |
| CN201041441Y (en) * | 2006-06-10 | 2008-03-26 | 深圳市元征科技股份有限公司 | Refrigerator measuring complementary system for coolant filling apparatus |
| CN101581520A (en) * | 2009-05-14 | 2009-11-18 | 王丑 | Definite quantity adder of coolant |
| CN201363976Y (en) * | 2009-03-11 | 2009-12-16 | 耿功业 | Full-automatic refrigerant quantitative adding machine |
| DE202010013793U1 (en) * | 2009-09-30 | 2011-03-03 | Texa S.P.A. | Multiple tank system for refilling coolant in an air conditioning system of a motor vehicle |
| CN103090937A (en) * | 2012-03-23 | 2013-05-08 | 台州朗讯机械有限公司 | Electronic scale capable of quantitatively adding liquid and method for quantitatively adding liquid |
| CN203043136U (en) * | 2013-02-21 | 2013-07-10 | 林莉莉 | Transfusion alarm |
| US20140260351A1 (en) * | 2013-03-12 | 2014-09-18 | Service Solutions U.S. Llc | Method and apparatus for improving the charge accuracy of a refrigerant recovery unit |
| CN204085725U (en) * | 2014-07-17 | 2015-01-07 | 台州朗讯机械有限公司 | A kind of Multifunctional coolant measures digital display meter device |
| CN204788600U (en) * | 2015-06-02 | 2015-11-18 | 罗能干 | Operating instrument of refrigerant able to programme filling balance |
| CN204890790U (en) * | 2015-08-12 | 2015-12-23 | 泰州学院 | Automatic monitoring infusion set |
| CN105988412A (en) * | 2016-05-24 | 2016-10-05 | 浙江金刚汽车有限公司 | Automobile air-conditioning system sealing detection and refrigerant injection device |
| CN206038040U (en) * | 2016-06-27 | 2017-03-22 | 金华市威科工贸有限公司 | Multiport refrigerant caliber |
| CN106581813A (en) * | 2017-01-10 | 2017-04-26 | 吴新社 | Gravity transfusion pump |
| CN208058084U (en) * | 2018-02-27 | 2018-11-06 | 温岭市维朋制冷设备有限公司 | A kind of refrigerant quantifies digital display meter group |
-
2018
- 2018-02-27 CN CN201810161834.9A patent/CN108167505B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060230775A1 (en) * | 2005-04-19 | 2006-10-19 | Govekar Craig F | Refrigerant charging using line having a control valve |
| CN201041441Y (en) * | 2006-06-10 | 2008-03-26 | 深圳市元征科技股份有限公司 | Refrigerator measuring complementary system for coolant filling apparatus |
| CN201363976Y (en) * | 2009-03-11 | 2009-12-16 | 耿功业 | Full-automatic refrigerant quantitative adding machine |
| CN101581520A (en) * | 2009-05-14 | 2009-11-18 | 王丑 | Definite quantity adder of coolant |
| DE202010013793U1 (en) * | 2009-09-30 | 2011-03-03 | Texa S.P.A. | Multiple tank system for refilling coolant in an air conditioning system of a motor vehicle |
| CN103090937A (en) * | 2012-03-23 | 2013-05-08 | 台州朗讯机械有限公司 | Electronic scale capable of quantitatively adding liquid and method for quantitatively adding liquid |
| CN203043136U (en) * | 2013-02-21 | 2013-07-10 | 林莉莉 | Transfusion alarm |
| US20140260351A1 (en) * | 2013-03-12 | 2014-09-18 | Service Solutions U.S. Llc | Method and apparatus for improving the charge accuracy of a refrigerant recovery unit |
| CN204085725U (en) * | 2014-07-17 | 2015-01-07 | 台州朗讯机械有限公司 | A kind of Multifunctional coolant measures digital display meter device |
| CN204788600U (en) * | 2015-06-02 | 2015-11-18 | 罗能干 | Operating instrument of refrigerant able to programme filling balance |
| CN204890790U (en) * | 2015-08-12 | 2015-12-23 | 泰州学院 | Automatic monitoring infusion set |
| CN105988412A (en) * | 2016-05-24 | 2016-10-05 | 浙江金刚汽车有限公司 | Automobile air-conditioning system sealing detection and refrigerant injection device |
| CN206038040U (en) * | 2016-06-27 | 2017-03-22 | 金华市威科工贸有限公司 | Multiport refrigerant caliber |
| CN106581813A (en) * | 2017-01-10 | 2017-04-26 | 吴新社 | Gravity transfusion pump |
| CN208058084U (en) * | 2018-02-27 | 2018-11-06 | 温岭市维朋制冷设备有限公司 | A kind of refrigerant quantifies digital display meter group |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167505B (en) | 2023-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208058084U (en) | A kind of refrigerant quantifies digital display meter group | |
| CN204855218U (en) | Online gas sampling ware | |
| CN112051106A (en) | Sampling device and sampling method for transformer bushing oil | |
| CN206361846U (en) | Outdoor unit and air conditioner for air conditioner | |
| CN108167505A (en) | A kind of refrigerant quantifies digital display meter group | |
| CN207906555U (en) | A kind of refrigerant quantifies the solenoid valve of digital display meter group | |
| CN113669619B (en) | SF6 gas supplementing device and SF6 gas supplementing method | |
| CN107702864B (en) | Engine thermostat lower case air-tightness detection tool | |
| CN108678937A (en) | A kind of fluid pump intelligent controller | |
| CN209083535U (en) | Fluid pump controller | |
| CN110594422A (en) | Manual-automatic water replenishing valve and water heater | |
| CN206767626U (en) | Built-in type constant pressure reagent barrel | |
| CN108562403A (en) | Battery case air-leakage test aerator and method | |
| CN210739392U (en) | Manual-automatic water replenishing valve and water heater | |
| CN209012496U (en) | Current limliting constant pressure valve | |
| CN212134362U (en) | Pressure resistance measuring device of compressor shell | |
| CN105004495B (en) | Gas generator gas outlet aluminium foil attaches device for detecting sealability and its detection method | |
| US3064481A (en) | Sampling device | |
| CN209229328U (en) | A kind of pressure limiting valve plug screw and plunger type lubrication oil pump pressure limiting valve | |
| CN208809485U (en) | A kind of controllable rotating evaporimeter | |
| CN207661404U (en) | A kind of automatic filling device of air conditioning for automobiles freon | |
| CN208125332U (en) | Battery case air-leakage test aerator | |
| CN112362339A (en) | Life testing device for low-temperature valve with gas filling port | |
| CN218331144U (en) | High-reliability high-low temperature test box for building material detection | |
| CN213714658U (en) | Blowdown interface valve test fixture |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No. 998 Jiulong Avenue, Chengxi Street, Wenling City, Taizhou City, Zhejiang Province, 317500 Applicant after: Zhejiang weipeng refrigeration equipment Co.,Ltd. Address before: No. 998 Jiulong Avenue, Chengxi Street, Wenling City, Taizhou City, Zhejiang Province, 317500 Applicant before: WENLING WIPCOOL REFRIGERATION EQUIPMENT Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |