CN204593988U - A kind of car air conditioner refrigerant adding set - Google Patents

Abstract

A kind of car air conditioner refrigerant adding set, comprising: gas channel, refrigerant interface and air conditioning for automobiles interface; Described gas channel is communicated with described refrigerant interface and described air conditioning for automobiles interface; Valve and three-way connector is also provided with in described gas channel, the folding of gas channel described in described Valve controlling, the two ends of described three-way connector are connected with described valve and described air conditioning for automobiles interface respectively, and the three-terminal link of described three-way connector has Pressure gauge.Operator directly can learn the pressure information of automotive air-conditioning system in the process of filling cold-producing medium by Pressure gauge.

Description

A kind of car air conditioner refrigerant adding set

Technical field

The utility model relates to a kind of auto repair care device, is especially directed to the adding set of the cold-producing medium of air conditioning for automobiles.

Background technology

Automotive air-conditioning system for driver comfort level be an important part, especially in the summer of sweltering heat.But along with the long time running of air-conditioning system, the content of its cold-producing medium can decline, the refrigeration of air-conditioning is caused to decline.Usual people need automobile specifically to maintain shop to add cold-producing medium, but this way wastes time and energy.Therefore, the corresponding cold-producing medium creating portable gas tank dress, thus driver can do it yourself to add cold-producing medium directly to air-conditioning system.

But, traditional interpolation instrument, has several large problem: first, and the cold-producing medium of air conditioning for automobiles can damage the ozone layer and atmospheric environment, so being tightly connected of filling tool and air conditioning for automobiles interface must be kept air conditioning for automobiles filling cold-producing medium to when, if misoperation, can leakage be produced.Secondly, not Pressure gauge on traditional interpolation instrument, can not know to the addition of how many cold-producing mediums on earth time driver adds voluntarily intuitively, often has the problem that additive capacity deficiency or additive capacity destroy compressor of air conditioner too much.Again, it is all that strip of paper used for sealing gas tank being filled cold-producing medium gas tank mouth by a root thorn pin punctures that traditional cold-producing medium adds instrument, allows cold-producing medium flow out from gas tank, and then flow in automotive air-conditioning system.But the capping of gas tank mouth due to sealing need be generally iron or other metals are made, have certain intensity, rigidity and hardness, higher to the requirement of pricker;

Traditional pricker is movably arranged in joint, after joint is connected to gas tank, then turns the handle of pricker, pricker is stabbed gas tank, this structure uses inconvenience on the one hand, because after puncturing gas tank capping, also needs to rotate pricker handle, away from gas tank, on the other hand, complicated structure, sealing is compared and is difficult to solve, and the gas channel opened is little; Must needing that gas tank connects is screwed in view of joint itself needs to rotate, take the structure of the pricker fixedly mounted within a fitting, structure is simple on the one hand, sealing problem does not also exist, on the other hand, operate more convenient, be abutted against the action that head itself is connected on gas tank and just can complete the object that gas tank capping is opened, and the pricker of accompany movement can cut out a larger circular hole, makes airflow smooth; But after pricker stressed and instrument in use reuses certain number of times, the pricker adding cold-producing medium instrument there will be loosening, thus there will be and cannot puncture gas tank, or the Kong Tai little punctured, cold-producing medium can not the problem of smooth and easy outflow.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, creates one and prevents leakage of refrigerant, and the air-conditioning refrigerant that can show again addition intuitively adds instrument.

The utility model illustrates a kind of car air conditioner refrigerant adding set, comprising: gas channel, refrigerant interface and air conditioning for automobiles interface; Described gas channel is communicated with described refrigerant interface and described air conditioning for automobiles interface; Valve and three-way connector is also provided with in described gas channel, the folding of gas channel described in described Valve controlling, the two ends of described three-way connector are connected with described valve and described air conditioning for automobiles interface respectively, and the three-terminal link of described three-way connector has Pressure gauge; Be connected by flexible pipe between described three-way connector with air conditioning for automobiles interface, the length of described flexible pipe is 0.01 meter to 1 meter.

The utility model also has following supplementary features:

The output that described valve comprises valve body, the input be connected with described refrigerant interface and is connected with described three-way connector; Angle between described output and described valve body is acute angle.

Angle between described output and described valve body is 25 to 75 to spend.

Angle between described output and described valve body is 43 degree.

Described valve body comprises valve seat, is arranged on the spool in described valve seat and drives the drive unit of described spool; Described drive unit comprises the handle be connected with described spool, and leans the back-moving spring of described handle.

Described refrigerant interface comprises the first end be connected with refrigerant storage tank and the second end be connected with described valve, and the inside of described first end and described second end has centre bore to be interconnected; Be provided with the pricker of hollow in described refrigerant interface, be arranged on the spring around described pricker and lean the sealing ring at described spring one end; One end of described pricker is sharp end, described sharp end is towards refrigerant storage tank, described sharp end is in interface first end, the other end of described pricker is the flange cap matched with the edge of described centre bore, described sharp end is for puncturing the capping of described refrigerant storage tank, be provided with the plug of hollow in second end of described refrigerant interface, described plug matches with the inwall of the second end of described refrigerant interface and coordinates the next flange cap against described pricker

Be formed with gusset between the first end of described refrigerant interface and the second end, the outer wall of described second end is formed with external screw thread, described externally threaded outside is also provided with a sealing ring and is resisted against on described gusset.

Described plug and the mutual interference fit of interface second end inwall.

The outer wall of described plug is formed with screw thread, the inwall of described second end is formed with internal thread, described plug is threaded mutually by the inwall of described screw thread with described second end.

The flange cap of described pricker is formed with at least one radial ribs, and the edge of described centre bore is manufactured with the radial slot matched with described radial ribs.

The flange cap of described pricker is electroplate with layers of copper, and the edge of described flange cap and described centre bore is welded to each other fixing.

The central authorities of described air conditioning for automobiles interface are formed with thimble, and when adding cold-producing medium, described thimble leans car air conditioner refrigerant and adds mouth.

Described car air conditioner refrigerant adding set also comprises a cavity, and described valve and described refrigerant interface are arranged in described cavity; Described three-way connector is connected by flexible pipe with described cavity.

Described air conditioning for automobiles interface is connected by flexible pipe with described three-way connector.

The utility model is formed with thimble in the central authorities of air conditioning for automobiles interface, and only have when correctly interpolation instrument and car air conditioner refrigerant being added after mouth is connected, described thimble just can lean the interpolation mouth of air-conditioning of driveing a car, and opens gas channel.Thus reduce leakage of refrigerant to the risk in air.Secondly, this interpolation instrument is directly provided with threeway original paper and Pressure gauge.In the process of filling, driver can the pressure information of categorical reading automotive air-conditioning system, and operates the dosage adding cold-producing medium according to this information, thus effectively prevent the inadequate or too much possibility of cold-producing medium addition.Again, the output in the valve in the utility model and the angle design between valve body are acute angle.Because the cold-producing medium be stored in gas tank is in a liquid state substantially, and the cold-producing medium in automotive air-conditioning system is gaseous state.Can smoothly by this acute angle after the liquid refrigerant in gas tank needs to be transformed into gaseous state, to be more smooth and easyly effectively filled in automotive air-conditioning system.The design of this angle has been through a large amount of experimental demonstrations, and when the angle drawing between output and valve body is 43 degree of angles, flow velocity and the delivery efficiency of described cold-producing medium are best.In addition, refrigerant interface of the present utility model is provided with sealing ring and sealing ring respectively in inner and outside respectively, prevents the leakage of cold-producing medium further.And the end of pricker has leaned plug prevents pricker to produce displacement and rotation when puncturing gas tank capping, thus solve pricker and do not puncture the trouble of capping and pricker when not puncturing capping completely, the problems such as the speed that cold-producing medium flows out from thimble is slow, efficiency is low.

Accompanying drawing explanation

Fig. 1 is the schematic diagram that car air conditioner refrigerant adds instrument.

Fig. 2 is schematic diagram manometric in this interpolation instrument.

Fig. 3 is the schematic diagram of valve in this interpolation instrument.

Fig. 4 is the schematic diagram of air conditioning for automobiles interface in this interpolation instrument.

Fig. 5 is the schematic diagram of refrigerant interface in this interpolation instrument.

Fig. 6 is the schematic diagram of plug in this interpolation instrument.

Fig. 7 is the schematic diagram of pricker in this interpolation instrument.

Fig. 8 is the top view of pricker flange cap in this interpolation instrument.

Fig. 9 is the top view of the centre bore of this interpolation instrument refrigerant interface.

Refrigerant interface 1 first end 11

Second end 12 pricker 13

Sealing ring 14 sealing ring 15

Spring 16 plug 17

External screw thread 171 flange cap 18

Convex tendon 181 gusset 19

Radial slot 191 air conditioning for automobiles interface 2

Thimble 21 valve 3

Input 31 output 32

Valve seat 33 spool 34

Three-way connector 4 Pressure gauge 5

Cavity 6 flexible pipe 7

Handle 81 back-moving spring 82

Detailed description of the invention

With reference to Fig. 1, this car air conditioner refrigerant adds instrument and comprises the air conditioning for automobiles interface 2 that the refrigerant interface 1 for being connected with refrigerant storage device is connected with the cold-producing medium filler on automotive air-conditioning system and the gas channel formed between refrigerant interface 1 and air conditioning for automobiles interface 2.Common refrigerant storage device is the can type cold-producing medium can bought on the market.Also include pricker in described refrigerant interface 1, after refrigerant interface 1 is connected with can type cold-producing medium, pricker can puncture the surface of can type cold-producing medium, thus cold-producing medium can be allowed to flow out from gas tank, and enters gas channel.Valve 3 and three-way connector 4 is also provided with in described gas channel.One end of described three-way connector 4 is connected with valve 3, and the second end is connected with described air conditioning for automobiles interface 2, and the three-terminal link of described three-way connector 4 has Pressure gauge 5, and described Pressure gauge can pressure in measured automobiles air-conditioning system.Preferably, described cold-producing medium adds instrument and comprises a cavity 6, and described valve 3 and refrigerant interface 1 are arranged in cavity 6.And cavity 6 is with three-way connector 4, be connected by flexible pipe 7 between three-way connector 4 with air conditioning for automobiles interface 2.Because the position of the cold-producing medium filler of the automobile self of each model is different, the space sometimes around cold-producing medium filler is less.Flexible pipe 7 can bend arbitrarily, and this instrument can easierly be connected with the cold-producing medium filler of air conditioning for automobiles by user.

Fig. 2 illustrates a kind of embodiment of the Pressure gauge 5 in this instrument, and wherein Pressure gauge 5 is pointer pressure.In the process of filling cold-producing medium, operator directly can read the pressure state in automotive air-conditioning system by Pressure gauge 5, thus avoids cold-producing medium interpolation not, or adds too many problem.

With reference to Fig. 3, the output 32 including valve body, the input 31 be connected with described refrigerant interface 1 in valve 3 and be connected with three-way connector 4.Include valve seat 33 in valve body, be arranged on the spool 34 in valve seat and drive the drive unit of described spool 34.User drives the movement of spool 34 by operation drive unit, thus controls the folding of refrigerant gas stream passage and the amplitude size of folding.Wherein, the angle between described valve body and output 32 is the acute angle between 25-75 degree.Because the cold-producing medium be stored in gas tank is in liquid state substantially, and the cold-producing medium in automotive air-conditioning system is gaseous state.Cold-producing medium is after experienced by great many of experiments, inventor find, by by the angular definitions between valve body and output 32 when the acute angle of 25-75 degree, in gas tank, liquid refrigerant substantially can change into gaseous state after valve body, can this angle be passed through like this, enter output 32.And then can be filled in automotive air-conditioning system rapidly.And after inventor have passed test of many times, when the angle finding between output 32 and valve body is 43 degree of angles, it is most effective that cold-producing medium flow in the middle of automotive air-conditioning system.

In addition, with reference to Fig. 1 and Fig. 3, wherein, described drive unit is the handle 81 be connected with spool 34, and leans the back-moving spring 82 at handle 81 and valve 3 two ends.Operator carrys out the folding of by-pass valve control 3 by pressing handle 81.Certainly, described drive unit 8 also can be runner in conventional valves or handle, and operator carrys out the folding of by-pass valve control 3 by rotating described runner or handle.

With reference to Fig. 4, the inside of described air conditioning for automobiles interface 2 is formed with a thimble 21, after described air conditioning for automobiles interface 2 is connected with the cold-producing medium filler of automotive air-conditioning system, thimble 21 can lean on cold-producing medium filler, thus the cold-producing medium filler of automotive air-conditioning system is leaned out, allow the cold-producing medium in gas channel flow in automotive air-conditioning system.In addition, the inwall of air conditioning for automobiles interface 2 is also formed with screw thread, can be more firm with the connection of cold-producing medium filler.

With reference to Fig. 5, described refrigerant interface 1 can be decomposed into the first end 11 be connected with refrigerant storage device, and the second end 12 be connected with valve 3.Be formed with centre bore between described first end 11 and the second end 12 to be interconnected.Wherein, described refrigerant storage device is generally the gas tank that cold-producing medium is housed.The inwall of usual first end 11 is formed with the internal thread matched with described gas tank mouth, makes the connection between refrigerant interface 1 and gas tank more firm.The sealing ring 14 being provided with the pricker 13 of hollow in refrigerant interface described in described refrigerant interface 1, being arranged on the spring 16 around described pricker 13 and leaning at described spring one end; One end of described pricker 13 is sharp end, and the other end is the flange cap 18 matched with centre bore, and when described refrigerant interface 1 engages with described gas tank, the sharp end of described pricker 13 punctures the capping of described gas tank mouth.And when the screw thread of refrigerant interface first end 11 and gas tank mouth screw by user, pricker 13 can rotate along with refrigerant interface 1, thus produces a circular hole in the capping of gas tank mouth.After puncturing gas tank, cold-producing medium then flows into the input 32 of valve by the passage of pricker 11 empty internal.Described sealing ring 14 is for preventing the leakage of cold-producing medium.In addition, gusset 19 is also formed with between described first end 11 and the second end 12.The outer wall of the second end 12 that described refrigerant interface 1 is connected with the input 32 of valve 3 is formed with external screw thread, and described externally threaded end is also provided with a sealing ring 15.Sealing ring 15 leans on described gusset 19.Further prevent from cold-producing medium from producing between valve 3 and interface 1 to reveal.

With reference to Fig. 5 and Fig. 6, the flange cap 18 of described pricker 13 has also leaned a plug 17, the center of described plug 17 is formed porose, and described hole is connected with the hollow channel of pricker 13.The outer wall of described plug 17 leans on the inwall of refrigerant interface 1, and leans the end of pricker 13.When user breaks the capping of cold-producing medium gas tank with pricker 13 deburring, pricker 13 can receive the reaction force that capping applies, but leans the end at pricker 13 due to plug 17, and pricker 13 can't loosen because of reaction force.Solve because pricker 13 loosens and the situation of gas tank capping cannot be punctured; And the problem that the cold-producing medium rate of outflow that gas tank capping causes is slow, have some setbacks cannot to be stung open completely because pricker pine 13 is dynamic.Mutual interference fit between usual described plug 17 and the inwall of refrigerant interface 1.But, the result that interference fit is brought be to the size of plug 17 and processing request very high, if plug 17 is undersized, the frictional force between the inwall of plug 17 and refrigerant interface 1 is not enough, then do not reach the problem preventing pricker 13 from loosening.But, if plug 17 is oversize, then has and cannot be installed in refrigerant interface 1, or the problem that refrigerant interface 1 is burst.

For this reason, preferably, with reference to Fig. 6, the connected mode of plug 17 and refrigerant interface second end 12, for being threaded, wherein, the outer wall of plug 17 being formed with external screw thread 171, and the inwall of the second end 12 is formed with internal thread.Reduce plug 17 thus and add the requirement of man-hour to precision.

In addition, with reference to Fig. 1, Fig. 5, Fig. 7-9, in traditional cold-producing medium interpolation instrument, pricker 13 punctures the capping of refrigerant storage tank by radial motion.The size in thorn hole out then depends on the factors the such as whether size of user's strength, the acuity of pricker 13 and pricker 13 loosens.And the size in the hole stinging out is each time all different, to such an extent as to the speed that cold-producing medium flows out from storage tank is also lack of consistency.And in the technical program, when refrigerant interface 1 is connected with refrigerant storage tank by rotating by user, first the sharp end of pricker 13 punctures the capping of storage tank, afterwards can along with the rotation of refrigerant interface 1, the hole that one, cut place is circular in the capping of storage tank.Like this, the size in each hole on storage tank is substantially identical, so the flow velocity of cold-producing medium is also basically identical.But, in this programme, not only need by plug 17 prevent pricker 13 in radial directions loosen, also to prevent further pricker 13 in a circumferential direction loosen.For this reason, with reference to Fig. 7-9, the flange cap 18 of described pricker 13 is formed with at least one lug boss, is preferably the rib of the radial direction that many processes are stamped to form.Relevant position is also formed with depressed part to the inwall of described refrigerant interface 1, is preferably the radial slot 191 corresponding with described rib.Described lug boss engages mutually with described depressed part.In addition, in another kind of embodiment, the periphery of the flange cap 18 of described pricker 13 is fixed by the mode of welding and the inwall of described refrigerant interface 1.Further prevent the possibility that pricker 13 loosens.And in the embodiment of welding, because pricker 13 needs the capping of deburring relieving stagnant Qi tank, himself need to have certain Rigidity and strength, so be normally made up of stainless steel, but refrigerant interface 1 is generally copper.But the difficulty of stainless steel and copper directly being welded is very big, so before pricker 13 and refrigerant interface 1 are welded to each other, need on the flange cap 18 of pricker 13, to electroplate one deck copper by the mode of plating, weld mutually with refrigerant interface 1 more afterwards, make its connection between the two more firm.

Claims (13)

1. a car air conditioner refrigerant adding set, comprising: gas channel, refrigerant interface and air conditioning for automobiles interface; Described gas channel is communicated with described refrigerant interface and described air conditioning for automobiles interface; It is characterized in that, valve and three-way connector is also provided with in described gas channel, the folding of gas channel described in described Valve controlling, the two ends of described three-way connector are connected with described valve and described air conditioning for automobiles interface respectively, and the three-terminal link of described three-way connector has Pressure gauge; Be connected by flexible pipe between described three-way connector with air conditioning for automobiles interface, the length of described flexible pipe is 0.01 meter to 1 meter.

2. car air conditioner refrigerant adding set according to claim 1, is characterized in that, the output that described valve comprises valve body, the input be connected with described refrigerant interface and is connected with described three-way connector; Angle between described output and described valve body is acute angle.

3. car air conditioner refrigerant adding set according to claim 2, is characterized in that, the angle between described output and described valve body is 25 to 75 to spend.

4. car air conditioner refrigerant adding set according to claim 3, is characterized in that, the angle between described output and described valve body is 43 degree.

5. car air conditioner refrigerant adding set according to claim 2, is characterized in that, described valve body comprises valve seat, is arranged on the spool in described valve seat and drives the drive unit of described spool; Described drive unit comprises the handle be connected with described spool, and leans the back-moving spring of described handle.

6. car air conditioner refrigerant adding set according to claim 1, it is characterized in that, described refrigerant interface comprises the first end be connected with refrigerant storage tank and the second end be connected with described valve, and the inside of described first end and described second end has centre bore to be interconnected; Be provided with the pricker of hollow in described refrigerant interface, be arranged on the spring around described pricker and lean the sealing ring at described spring one end; One end of described pricker is sharp end, described sharp end is towards refrigerant storage tank, described sharp end is in interface first end, the other end of described pricker is the flange cap matched with the edge of described centre bore, described sharp end is for puncturing the capping of described refrigerant storage tank, be provided with the plug of hollow in second end of described refrigerant interface, described plug matches with the inwall of the second end of described refrigerant interface and coordinates the next flange cap against described pricker.

7. car air conditioner refrigerant adding set according to claim 6, it is characterized in that, gusset is formed between the first end of described refrigerant interface and the second end, the outer wall of described second end is formed with external screw thread, and described externally threaded outside is also provided with a sealing ring and is resisted against on described gusset.

8. car air conditioner refrigerant adding set according to claim 6, is characterized in that, described plug and the mutual interference fit of interface second end inwall.

9. car air conditioner refrigerant adding set according to claim 6, it is characterized in that, the outer wall of described plug is formed with screw thread, the inwall of described second end is formed with internal thread, described plug is threaded mutually by the inwall of described screw thread with described second end.

10. car air conditioner refrigerant adding set according to claim 6, is characterized in that, the flange cap of described pricker is formed with at least one radial ribs, and the edge of described centre bore is manufactured with the radial slot matched with described radial ribs.

11. car air conditioner refrigerant adding sets according to claim 6, is characterized in that, the flange cap of described pricker is electroplate with layers of copper, and the edge of described flange cap and described centre bore is welded to each other fixing.

12. car air conditioner refrigerant adding sets according to claim 1, is characterized in that, the central authorities of described air conditioning for automobiles interface are formed with thimble, and when adding cold-producing medium, described thimble leans car air conditioner refrigerant and adds mouth.

13. car air conditioner refrigerant adding sets according to claim 1, it is characterized in that, described car air conditioner refrigerant adding set also comprises a cavity, described valve and described refrigerant interface are arranged in described cavity; Described three-way connector is connected by flexible pipe with described cavity.