CN203940672U - Off-premises station and aircondition - Google Patents

Abstract

Thereby provide a kind of kind of the operating personnel's of making reliable recognition cold-producing medium to improve off-premises station and the aircondition of safety and reliability.Off-premises station (2) possesses sealing hex nut (34) and will seal at least one party in mechanism that points out who needs operating personnel's operation while taking off with hex nut (23).

Description

Off-premises station and aircondition

Technical field

The utility model relates to the off-premises station of the aircondition that has used compressor-type kind of refrigeration cycle, the security while especially relating to the installation that can improve aircondition and while maintenance and off-premises station and the aircondition of reliability.

Background technology

In the past, aircondition used the R22 cold-producing medium of HCFC (HCFC) class or the R410A cold-producing medium of hydrogen fluorohydrocarbon (HFC) class etc. mostly.As current and existing aircondition, great majority are the equipment that has used R22 cold-producing medium or R410A cold-producing medium.In addition, in Japan, the equipment of selling now R410A cold-producing medium is main flow, in addition, also can think that the equipment of R410A cold-producing medium is in the great majority even if comprise existing aircondition.

But; in recent years; from the viewpoint of Ozonosphere protection and prevent the viewpoint of global warming, receive publicity as the natural refrigerant such as mix refrigerant or R290 (propane) and R600a (iso-butane) of cold-producing medium (HFO1234yf, HFO1234ze etc.), R32 and HFO class of R32 (difluoromethane), tetrafluoeopropene class of the HFC class cold-producing medium with flammable cold-producing medium.Wherein, receive publicity to alternativeization of the R32 cold-producing medium of HFC class or R290 (propane) cold-producing medium of HC class.R32 cold-producing medium and R290 cold-producing medium be characterised in that, the greenhouse effects of the earth coefficient (following, to be called GWP) that airborne release causes compare R22 cold-producing medium and R410A cold-producing medium very little.

Wherein, because R32 cold-producing medium and R290 cold-producing medium etc. are to have flammable cold-producing medium, so must design the product that has taken into full account security.R290 cold-producing medium has strong combustibility, when processing, must give one's full attention to.R32 cold-producing medium is lower than the combustibility of R290 cold-producing medium, can carry out and product design like the non-combustible cold-producing medium comparing class of R22 cold-producing medium and R410A cold-producing medium, but owing to still thering is combustibility, so also need safe design.Therefore, in the situation that using the combustible refrigerants such as R32 cold-producing medium and R290 cold-producing medium, need to be in order to improve security input cost.

Aircondition has compression-type refrigeration circulation compressor, outdoor heat converter, indoor heat converter, cross valve, pressure reducer etc. being formed by connecting with refrigerant piping.Therefore, in the case of having used the aircondition of the combustible refrigerant such as R32 cold-producing medium and R290 cold-producing medium, safe design especially need to be in the time installing an air-conditioner device or while safeguarding aircondition such, when filling operation of cold-producing medium etc. in refrigerant loop.

As such device, a kind of cooling device is disclosed, near " this cooling device have for by cold-producing medium to the inlet of filling in refrigerant loop, above-mentioned inlet; possess the display part of the kind for showing used cold-producing medium " (for example,, with reference to patent documentation 1)

Prior art document

Patent documentation

Patent documentation 1: Japanese kokai publication hei 10-311629 communique (with reference to Fig. 2 etc.)

Utility model content

The technical task that utility model will solve

The technology that patent documentation 1 is recorded, by near the method pointing out of the kind of the cold-producing medium that the inlet (service port) at filling cold-producing medium, demonstration is used, is pointed out the kind of cold-producing medium to operating personnel.For example, but according to the installation site of aircondition, under mal-condition, (, the work posture that the brightness of operation place is dark, burden is heavy etc.) carries out installation exercise sometimes, therefore exists to leak and sees the possibility that shows and mistake the kind of cold-producing medium.Therefore, only, by only showing the kind of cold-producing medium the technology of recording as patent documentation 1, existence can not be transmitted the problem of displaying contents reliably to operating personnel 100%.

Especially in the time using R32 cold-producing medium and R290 cold-producing medium etc. to there is flammable cold-producing medium, suppose under mal-condition, to carry out installation exercise, if not exclusively get rid of and leak the possibility of seeing, just can not guarantee security.Therefore, need utilization to make operating personnel thoroughly know the kind of used cold-producing medium than the more reliable method of prior art.

And from now on, according to the development of alternativeization of cold-producing medium, the kind of the cold-producing medium of processing will increase, can think that the situation of different cold-producing medium inclosures will be had generation by operating personnel's mistake of safeguarding more.In this case, there is the significantly problem of infringement safety and reliability.

For example, used the aircondition of existing R22 cold-producing medium or R410A not carry out the safe design of combustible refrigerant.In the time supposing that will have flammable cold-producing medium has enclosed this existing aircondition by mistake, in the time of installation exercise and when upkeep operation, occur the leakage of cold-producing medium, and use when aircondition refrigerant loop damaged and revealed in the situation of cold-producing medium, if reach flammable concentration around or have fire-lighter, cold-producing medium burning, likely causes great accident.

In addition, on the contrary, in the case of mistakenly R22 cold-producing medium or the inclosure of R410A cold-producing medium having been used the aircondition of combustible refrigerant, owing to for example having selected the refrigerator oil of suitable species according to the kind of cold-producing medium, so can there is the inter deterioration of compressor, the problem that initiation cooling and warming performance reduces, reliability significantly declines

Therefore, in the time installing an air-conditioner device and the time of maintenance, carry out following countermeasure in order to prevent from enclosing wrong cold-producing medium,, if the diameter of the port of the injection unit of cold-producing medium inlet is changed according to cold-producing medium, can easily prevent from enclosing wrong cold-producing medium.But, in the time that the diameter of the port of the injection unit of cold-producing medium inlet changes according to cold-producing medium, for inject cold-producing medium injection hose, cold-producing medium keeping use container (cold-producing medium high-pressure gas cylinder), also change for the kind of carrying out the spare part of vacuum attraction at refrigerant loop.So the equipment practitioner who carries out installation exercise and upkeep operation need to prepare to be suitable for its equipment again, the burden of expense also significantly increases.In addition, just come erecting bed and safeguard on-the-spot in the situation that not preparing these spare parts, operating personnel can not operation, sometimes causes larger confusion.

In addition,, by carrying out the household electrical appliances absorption method in April calendar year 2001, the discarded object that air-conditioning (aircondition), refrigerator, television set etc. are thrown in a large number need to focus on collection centre.In collection centre, disassembling operation and sorting operation that the hand that utilizes operating personnel disintegrates discarded object, utilize the comminution process that pulverizer pulverizes goods and the separation operation that utilizes the materials such as separator sorting iron, copper, aluminium, plastics.In addition,, in collection centre, if discarded object is aircondition, also reclaim by operating personnel the cold-producing medium of being enclosed aircondition.

In the time of recycling iron, copper, aluminium, melt by high heat treatment, so the impact of the foreign matter adhering on discarded object, impurity, dirt etc. is less, easily recycles, thereby be reused as valuable article.Plastics comprise multiple plastic material and tone, are difficult to recycling.But, in recent years, can carry out the sorting of plastic material, most plastic material can be reused.

And a part of implementing the recovery of freon class and the relevant law of destruction in guarantee relevant with specific products of in April, 2013 is corrected, the social trend of the measure that existence need to be regenerated to the freon class having used.Therefore,, in collection centre, for regeneration and the recycling of the cold-producing medium that easily reclaims, need to improve the refrigerant-recovery of purity.

The utility model is made in order to solve above-mentioned problem, its object is to provide a kind of off-premises station and aircondition, can make operating personnel (carry out installation exercise operating personnel, carry out the operating personnel of upkeep operation, the operator who reclaims) identify reliably the kind of cold-producing medium and improve security and reliability.

For solving the means of problem

Off-premises station of the present utility model possesses the refrigerant piping connection valve that is provided with cold-producing medium injection maintenance port, this cold-producing medium injects and is sealed by the sealing hex nut taking off in the time injecting cold-producing medium with maintenance port, and off-premises station of the present utility model possesses: make in external diameter, shape and the outward appearance of described sealing hex nut at least one with the sealing of cold-producing medium injection on the maintenance port different structure of hex nut of cold-producing medium that is arranged on other kinds of use; And/or in the time taking off described sealing hex nut, need operating personnel operation point out mechanism.

Aircondition of the present utility model possesses described off-premises station and the indoor set being connected with described off-premises station.

According to off-premises station of the present utility model, in the time carrying out cold-producing medium filling operation, can make operating personnel can misplacement not enter cold-producing medium, and improve security.

According to off-premises station of the present utility model, owing to possessing above-mentioned off-premises station, so can rejection and the reduction of quality.

Brief description of the drawings

Fig. 1 is the integrally-built summary construction diagram that represents the aircondition with off-premises station of embodiment 1 of the present utility model.

Fig. 2 is the exploded perspective view that represents the structure of the indoor set of the aircondition with off-premises station of embodiment 1 of the present utility model.

Fig. 3 is the exploded perspective view that represents the structure of the off-premises station of embodiment 1 of the present utility model.

Fig. 4 is the enlarged outline map that amplifies a part for the side of the off-premises station that represents embodiment 1 of the present utility model.

Fig. 5 is the key diagram of the sequence of operation for cold-producing medium injection is described.

Fig. 6 is the enlarged outline map that further amplifies a part for the side of the off-premises station that shows embodiment 1 of the present utility model.

Fig. 7 A is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 2 of the present utility model is described, is the enlarged drawing that has amplified the side of off-premises station.

Fig. 7 B is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 2 of the present utility model is described, is the stereogram of display board.

Fig. 7 C is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 2 of the present utility model is described, is the stereogram of display board.

Fig. 8 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 3 of the present utility model is described.

Fig. 9 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 4 of the present utility model is described.

Figure 10 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 5 of the present utility model is described.

Figure 11 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 6 of the present utility model is described.

Figure 12 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 7 of the present utility model is described.

Figure 13 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 7 of the present utility model is described.

Figure 14 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 7 of the present utility model is described.

Figure 15 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 8 of the present utility model is described.

Figure 16 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 8 of the present utility model is described.

Figure 17 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 8 of the present utility model is described.

Figure 18 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 9 of the present utility model is described.

Figure 19 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station for embodiment 9 of the present utility model is described.

Detailed description of the invention

Below, with reference to the accompanying drawings embodiment of the present utility model is described.In addition, comprising Fig. 1 in interior following accompanying drawing, the magnitude relationship of each component parts is sometimes different from actual conditions.And, comprising Fig. 1 in interior following accompanying drawing, the parts of mark prosign are identical parts or suitable parts, this point is common in whole description.And the form of the inscape that whole description represents is only to illustrate, and is not limited to these records.

Embodiment 1

Fig. 1 is the integrally-built summary construction diagram that represents the aircondition A with off-premises station 2 of the utility model embodiment 1.Fig. 2 is the exploded perspective view that represents the structure of indoor set 1.Fig. 3 is the exploded perspective view that represents the structure of off-premises station 2.According to Fig. 1～Fig. 3, the structure of aircondition A is described.Off-premises station 2 can make operating personnel (for example carry out the installation exercise of aircondition A operating personnel, carry out the operating personnel of the upkeep operation of aircondition A, the operating personnel who carries out the recovery operation of aircondition A) understand reliably the kind of being enclosed the cold-producing medium in aircondition A.

Aircondition A is for example the device using as split type home-use air-conditioning, has indoor set 1 and indoor set 2.Indoor set 1 is for example fixed on installing plate 21 on the wall of indoor by screw 59 grades, and fixes in the mode hanging on installing plate 21, supplies with Air Conditioning to air-conditioning object space.Supporting station 51 is arranged on the space different from air-conditioning object space (for example, outside room) by off-premises station 2, fixes in the mode being positioned on supporting station 51, supplies with cold energy or heat energy to indoor set 1.And off-premises station 2 is arranged on wind path and the position not oversize apart from the distance of indoor set 1 etc. can guarantee to turn round time.

On indoor set 1, be connected with liquid pipe side line jointing 12 and gas side pipe arrangement jointing 13.On off-premises station 2, be connected with hydraulic fluid side pipe arrangement connection valve 8 and gas side pipe arrangement connection valve 9.And, use and carried out prolongation pipe arrangement (refrigerant piping) 7 of expanding by hydraulic fluid side pipe arrangement connection valve 8 combinations of the liquid pipe side line jointing 12 of indoor set 1 and off-premises station 2.Similarly, use and carried out the prolongation pipe arrangement 7 of expanding by gas side pipe arrangement connection valve 9 combinations of the gas side pipe arrangement jointing 13 of indoor set 1 and off-premises station 2.Thus, the key element equipment of the key element equipment of indoor set 1 and off-premises station 2 is connected with pipe arrangement, forms refrigerant loop.

In addition, for indoor set 1 and off-premises station 2 are electrically connected, use VVF cable 22 by terminal board 17 combinations of the terminal board of indoor set 1 20 and off-premises station 2.And hydraulic fluid side pipe arrangement connection valve 8, gas side pipe arrangement connection valve 9 and the terminal board 17 of off-premises station 2 is configured in and can be undertaken the position of operation by unloading pipe arrangement cover of upholstery 10 from off-premises station 2., can load and unload pipe arrangement cover of upholstery 10 is installed freely in the side of off-premises station 2.

(indoor set 1)

Front surface the Appearance Panel 55 that indoor set 1 has base station 52, indoor heat converter 11, indoor air supply motor 18, Air Blast fan 19, electric part box 53, framework 54 and can open and close and unload.Base station 52 is fixed on installing plate 21.Indoor heat converter 11, indoor air supply motor 18, Air Blast fan 19, electric part box 53 and terminal board 20 are installed on base station 52.Under this state, framework 54 screw threads are fixed on base station 52., become the state that indoor heat converter 11, indoor air supply motor 18, Air Blast fan 19, electric component case 53 and terminal board 20 are covered by framework 54.Front surface the Appearance Panel 55 is arranged in framework 54.

Indoor heat converter 11 is heating the parts that when running works, works as evaporimeter during at cooling operation as condenser (radiator).Indoor air supply motor 18 and Air Blast fan 19 are configured in the front of indoor heat converter 11, blow to indoor heat converter 11.In electric component case 53, contain the indoor drive unit 56 for air supply motor in drive chamber 18.Terminal board 20 is the parts for being electrically connected with off-premises station 2.

In addition, in indoor set 1, the suction inlet 57 that sucks the air of air-conditioning object space is formed at the upper surface of framework 54.And, in indoor set 1, make the air that sucks from suction inlet 57 to indoor heat converter 11 by and carry out heat exchange, the blow-off outlet 58 that Air Conditioning is blown out to air-conditioning object space is formed on the front surface below of framework 54.

(off-premises station 2)

In off-premises station 2, contain the compressor 3 of for example variable speed type of compressed refrigerant, outdoor heat converter 5, the volume control device 6 (pressure reducer) that the pressure of cold-producing medium is reduced pressure, the outdoor air supply motor 15 of blowing to outdoor heat converter 5 and the outdoor fan 16 that switches the mobile cross valve 4 of cold-producing medium, works as condenser (radiator) during at cooling operation heating that when running works as evaporimeter.Off-premises station 2 forms framework by the side panel 66 of a part for the panel 62 of a part for formation front surface and side, the top board 65 that forms end face and formation side.

On the position relative with outdoor fan 16 of panel 62, be formed with the peristome 63 that passes through mouth that forms air.The fan protection part 64 being formed by wire is installed on peristome 63.In side panel 66, be formed with the peristome 68 that VVF cable 22 is exposed.The VVF cable 22 that the peristome 68 of panel 66 exposes is from the side covered by cable hood 67.Cable hood 67 is further covered by pipe arrangement cover of upholstery 10.And, in off-premises station 2, there is compressor 3, cross valve 4, for the drive unit 14 of air supply motor outside drive chamber 15, terminal board 17 for being electrically connected with indoor set 1.

(refrigerant loop)

Form refrigerant loop by the indoor heat converter 11 by pipe arrangement connection indoor set 1, compressor 3, cross valve 4, outdoor heat converter 5 and the volume control device 6 of off-premises station 2.Specifically, form as follows refrigerant loop,, in the time heating running, cold-producing medium flows through compressor 3, cross valve 4, indoor heat converter 11, volume control device 6, outdoor heat converter 5 in order, in the time of cooling operation, cold-producing medium flows through compressor 3, cross valve 4, outdoor heat converter 5, volume control device 6, indoor heat converter 11 in order.In addition, also can cross valve 4 be set and only carry out cooling operation or heat running.And, also can be configured to and substitute cross valve 4 and use for example multiple two-port valves or triple valve, similarly switch flowing of cold-producing medium.

(cold-producing medium)

As the cold-producing medium circulating in the refrigerant loop of aircondition A, exist and there is flammable for example R32 cold-producing medium.But, the cold-producing medium using in aircondition A is not limited to R32 cold-producing medium.For example, also can adopt other combustible refrigerants (for example, R290 cold-producing medium), carbon dioxide (CO ₂), the not chloride cold-producing mediums such as alternative refrigerant such as natural refrigerant, R410A and R407C, R404A such as hydrocarbon, helium.

(installation method of aircondition A)

Next, the installation method of aircondition A is described.

First, on the wall of indoor, be fixed for the installing plate 21 of fixing indoor set 1 by screw 59 grades.Indoor set 1 card is hung on this installing plate 2 and fixed.

For example, and the wind path in the time can guaranteeing to turn round and the position (, space house around, balcony, roof, garage, garden etc.) not oversize apart from the distance of indoor set 1 arrange off-premises station 2.

And, in order to form the refrigerant loop of aircondition A, use the prolongation pipe arrangement 7 that has carried out reaming processing by hydraulic fluid side pipe arrangement connection valve 8 combinations of the liquid pipe side line jointing 12 of indoor set 1 and off-premises station 2.Equally, use the prolongation pipe arrangement 7 that has carried out reaming processing that the gas side pipe arrangement connection valve 9 of the gas side pipe arrangement jointing 13 of indoor set 1 and off-premises station 2 is linked.And, for by indoor set 1 and off-premises station 2 electrical engagement, use VVF cable 22 by terminal board 17 combinations of the terminal board of indoor set 1 20 and off-premises station 2.

Then, in the side of off-premises station 2, pipe arrangement cover of upholstery 10 is installed, to cover hydraulic fluid side pipe arrangement connection valve 8, gas side pipe arrangement connection valve 9 and the terminal board 17 of off-premises station 2.

In addition, in general, cover 2 prolongation pipe arrangements 7 separately around with heat-barrier material 60.And, 2 prolongation pipe arrangements 7 that covered are gathered to rear use be with 61 coilings by heat-barrier materials 60.

Fig. 4 is the enlarged outline map that amplifies a part for the side that shows off-premises station 2.Fig. 5 is the key diagram of the sequence of operation for cold-producing medium injection is described.According to Fig. 4 and Fig. 5, the sequence of operation that general cold-producing medium is injected describes.

As shown in Figure 4, gas side pipe arrangement connection valve 9 has cold-producing medium injection maintenance port 23.This cold-producing medium injects with being connected with the hose for pouring 26 being connected with vavuum pump 25 on maintenance port 23.And, between vavuum pump 25 and cold-producing medium inject with maintenance port 23, be connected with pressure gauge 27.

As shown in Figure 5, gas side pipe arrangement connection valve 9 is injected with also having flue side valve bar 30 maintenance port 23 except cold-producing medium.Inject with being provided with on maintenance port 23 for sealing cold-producing medium and inject the hex nut for sealing (lid) 24 with maintenance port 23 at cold-producing medium.Inject the valve 33 that is built-in with distribution formula with maintenance port 23 at cold-producing medium.And, on flue side valve bar 30, be provided with valve rod hex nut (lid) 28.Can operating gas pipe side valve bar 30 by die nut 29.And hydraulic fluid side pipe arrangement connection valve 8 has liquid line side valve bar 32.On liquid line side valve bar 32, be provided with valve rod hex nut (lid) 31.Can operating liquid pipe side valve bar 32 by die nut 29.

Extend pipe arrangement 7 by the moment of indoor set 1 and off-premises station 2 combinations using, at the prolongation pipe arrangement 7 of combination with form the inside of the pipe arrangement of the indoor heat converter 11 of indoor set 1, be full of air.Therefore, need to emit this air.So, in off-premises station 2, the cold-producing medium injection sealing hex nut 24 of maintenance port 23 being arranged in gas side pipe arrangement connection valve 9 is unloaded, and the hose for pouring of vavuum pump 25 26 is connected in to cold-producing medium injection maintenance port 23, carry out vacuum attraction.Completing of the confirmation vacuum attractions such as working pressure meter 27.

After vacuum attraction completes, the valve rod hex nut 28 of gas side pipe arrangement connection valve 9 is unloaded, use die nut 29 operating gas pipe side valve bars 30, open gas side pipe arrangement connection valve 9.To hydraulic fluid side pipe arrangement connection valve 8 similarly, valve rod hex nut 31 is unloaded, operate liquid pipe side valve bar 32 with die nut 29, open hydraulic fluid side pipe arrangement connection valve 8.In the time opening gas side pipe arrangement connection valve 9 and hydraulic fluid side pipe arrangement connection valve 8, the cold-producing medium of just having enclosed in advance during fabrication off-premises station 2 is full of and extends pipe arrangement 7 and indoor heat converter 11.Thus, indoor set 1 is connected with off-premises station 2, forms refrigerant loop.

In the situation that prolongation pipe arrangement 7 is grown, sometimes there is the situation of enclosing in advance during fabrication the short of refrigerant of off-premises station 2.In this case, need to append cold-producing medium fills.Under these circumstances, operating personnel appends via cold-producing medium injection maintenance port 23 the required amount of injecting by the cold-producing medium of being enclosed in cold-producing medium high-pressure gas cylinder of preparation.The kind of the cold-producing medium in the cold-producing medium high-pressure gas cylinder that at this moment, operating personnel must be noted that to be enclosed in the kind of the cold-producing medium in aircondition A and to be enclosed in preparation is identical.

In the time that the injection of cold-producing medium completes, operating personnel uses spanner that the valve rod hex nut 28 of the valve rod hex nut 31 of hydraulic fluid side pipe arrangement connection valve 8, gas side pipe arrangement connection valve 9, the cold-producing medium injection sealing hex nut 24 of maintenance port 23 are tightened securely.Finally, operating personnel is fixed on pipe arrangement cover of upholstery 10 on off-premises station 2.Like this, a series of end of job.

(identification of cold-producing medium kind)

Fig. 6 further amplifies the part of side of off-premises station 2 and the enlarged outline map that shows.According to Fig. 6, operating personnel is explained the situation that is enclosed in the kind of the cold-producing medium in aircondition A and identifies.

As mentioned above, be provided with hydraulic fluid side pipe arrangement connection valve 8 and gas side pipe arrangement connection valve 9 in the side of off-premises station 2.And, in gas side pipe arrangement connection valve 9, be provided with cold-producing medium and inject with maintenance port 23.As shown in Figure 5, the operating personnel of erecting bed take off sealing with hex nut 24 after at the hose for pouring 26 that cold-producing medium inclosure use is installed on maintenance port 23 for cold-producing medium injection.Thus, be constructed as follows structure, that is, open the valve 33 of the distribution formula that is built in cold-producing medium injection maintenance port 23, can enclose cold-producing medium.

In the air-conditioning of the R410A cold-producing medium that current main-stream is used, sealing used is 1/2 inch of screw thread specification with hex nut 24.And sealing is 17mm with the hexagonal opposite side of hex nut 24.But, in the time using the sealing hex nut 24 of such specification, in the case of enclosed to the air-conditioning of installing with the diverse cold-producing medium of R410A cold-producing medium, operating personnel easily mistakes the kind of cold-producing medium.

Sealing is equivalent to " cold-producing medium that is arranged on other injects the sealing hex nut with maintenance port " of the present utility model with hex nut 24.

Therefore, as shown in Figure 6, in off-premises station 2, use the sealing using than current main-stream hex nut (following, to be called sealing hex nut (lid) 34) more than the opposite side size 18mm that hex nut 24 is large.Owing to using sealing hex nut 34, so can not use the spanner of the normally used sealing of operating personnel hex nut 24 use., operating personnel must use special spanner (instrument) with hex nut (lid) 34 to sealing.Therefore, take off the sealing sessions of hex nut 34 operating personnel, what can make that operating personnel recognizes use is the cold-producing medium different from cold-producing medium in the past, can realize the effect pointing out.

; if make the sealing opposite side size of hex nut 34 become the size that can not use the spanner conventionally using; even if operating personnel has mistaken the kind of the cold-producing medium using, also can recognize that what using is the cold-producing medium different from cold-producing medium in the past during with hex nut 34 taking off sealing.Be not limited to the opposite side size of sealing hex nut 34, make at least one in external diameter, shape and the outward appearance of hex nut 34 of sealing different with sealing hex nut 24 if be configured in advance, just can not use the spanner (sealing the spanners of using hex nut 24 use) conventionally using.And, seal with hex nut 34 by use, do not need to drop into great amount of cost and just can obtain the safe design in the situation that especially uses the combustible refrigerant such as R32 cold-producing medium and R290 cold-producing medium.

And, as shown in Figure 6, by sealing with setting at least one face of the part that is hexa-prism of hex nut 34 based on mint-mark or seal etc. for representing the display part 35 of cold-producing medium kind, can further clearly the kind of used cold-producing medium be conveyed to operating personnel.

In addition, in Fig. 6, for example understand the situation that uses R32 cold-producing medium, but the kind of the cold-producing medium using is not limited to R32 cold-producing medium.But, in the case of using successful the combustible refrigerant such as R32 cold-producing medium and R290 cold-producing medium that drops into great amount of cost in safe design.And sealing is not limited to illustrative numerical value by the opposite side size of hex nut 34.

(technique effect of off-premises station 2)

As previously discussed, according to off-premises station 2, by changing the structure of the necessary manual parts (sealing hex nut) of operating personnel in the time carrying out cold-producing medium injection itself, compare the method that merely kind of cold-producing medium is documented on seal and attaches to connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, operating personnel can not carry out misplacement to cold-producing medium and enter, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially,, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to have flammable cold-producing medium, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

In addition, display part 35 also can not only be recorded the kind of cold-producing medium, also records the mark, initial of combustible refrigerant, points for attention with literature record.And the viewpoint also not disappearing from long-time use, compares printed article, display part 35 is more suitable for the mode with mint-mark.For example, in the time of the refrigerant-recovery of collection centre, be applicable to the situation of the kind of identifying cold-producing medium.In order to express in detail points for attention, printed article is suitable, but promoting to the whole world less at display space in the situation that or by equipment, mark and initial are more applicable.They use flexibly according to purposes.

And the kind of cold-producing medium, points for attention are when installing or the information that provides of the operating personnel in the time of maintenance, in the structure of off-premises station 2, by pipe arrangement cover of upholstery 10 is taken off from off-premises station 2, can confirm the information of recording in gas side pipe arrangement connection valve 9.Therefore, do not provide unwanted information to user, do not worry causing confusion.Particularly, although the so weak combustible refrigerant of R32 has combustibility, be not easy very much burning, in the time of the installation of aircondition and while maintenance, do not use fire if operating personnel remains on around, just do not worry the accident that causes that burning causes.Therefore, if be configured in advance the only structure to operating personnel's alerting item, can not bring unnecessary uneasiness to user, therefore be particularly suitable for using the equipment of micro-combustion cold-producing medium.

Here to preventing that in the time installing an air-conditioner device A the situation that misplacement enters cold-producing medium is illustrated, but in the time of the safeguarding of aircondition A, also can obtain same effect.For example, in the time refrigerant loop being placed under repair due to fault etc., in the case of reclaiming the cold-producing medium in refrigerant loop, inject and reclaim cold-producing medium with connecting refrigerant recovering apparatus on maintenance port 23 at cold-producing medium.Then, in the time enclosing cold-producing medium, also inject with connecting pre-prepd cold-producing medium high-pressure gas cylinder on maintenance port 23 at cold-producing medium, the cold-producing medium being injected in cold-producing medium high-pressure gas cylinder is enclosed to equipment.That is, even in the operation in the time safeguarding, use the sessions of hex nut 34 in the sealing of taking off cold-producing medium injection maintenance port 23, also can identify the kind situation different from existing cold-producing medium of cold-producing medium.

And, cold-producing medium inject with the port specification of maintenance port 23 be that the port specification used with former R410A cold-producing medium is identical, the diameter of thread is the screw thread of 1/2 inch.Therefore,, if hose for pouring 26, vavuum pump 25, pressure gauge 27 that operating personnel prepares etc. are with identical in the past, do not need extra preparation (buying) this type of spare part for R32.Therefore, for operating personnel, do not need to prepare especially the required expense of infrastructure and time, can expect the aircondition A that has used the cold-producing medium that global warming coefficient is little to be generalized to as early as possible on market.

In addition, cold-producing medium injects the port specification use screw thread of 1/2 inch identical with the port of the R410A cold-producing medium of current main-stream with maintenance port 23, but can be also the R22 cold-producing medium i.e. screw thread of 7/16 inch of port specification used in the past using.Operating personnel has had the injection hose that uses in the R22 cold-producing medium in the past using or the equipment of R410A cold-producing medium, vavuum pump, pressure gauge etc., even the port that therefore R22 cold-producing medium is used also can obtain same effect.

And, in embodiment 1, so that aircondition A is illustrated as example for the situation of split type home-use air-conditioning, but aircondition A is not limited to split type home-use air-conditioning, if cold-producing medium injection is arranged on off-premises station 2 with maintenance port 23, in business air conditioner, refrigerating plant etc., also can use aircondition A.

Embodiment 2

Fig. 7 A～Fig. 7 C is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 2 of the present utility model is described.According to Fig. 7 A～Fig. 7 C, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.Fig. 7 A has represented to amplify the enlarged drawing of the side of off-premises station 2, and Fig. 7 B represents the stereogram of display board 36, and Fig. 7 C represents the stereogram of display board 37.In present embodiment 2, to the part identical with embodiment 1 mark prosign, and by with the difference of embodiment 1 centered by describe.

In the off-premises station 2 of embodiment 2, as pointing out mechanism, display board 36 or display board 37 are set, this point is different from the off-premises station 2 of embodiment 1.As shown in Figure 7, the off-premises station 2 of embodiment 2, is provided with and shows that the kind of cold-producing medium is display board 36 or the display board 37 of cold-producing medium name at least one face with the face that is hexa-prism of hex nut 24 in sealing.In addition, about hex nut 24 for sealing, also can not make and change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.

Display board 36 has and represents the display part 36a of cold-producing medium name and start from one end of display part 36a extending with the orthogonal direction of the display surface of display part 36a the jut 36b arranging.On jut 36b, be provided with the installation portion 36c of C word shape.Display part 36a is for example made up of flat parts, is being provided with under the state of display board 36, shows " R32 " as cold-producing medium name on face toward the outer side.Installation portion 36c utilizes elastic force to be embedded in the threaded portion neck of cold-producing medium injection maintenance port 23.The cold-producing medium that installation portion 36c is embedded in gas side pipe arrangement connection valve 9 injects the threaded portion neck with maintenance port 23, thus, display part 36a can be remained at least one face of the face that is hexa-prism of sealing hex nut 24.

Display board 36 can, by resin etc. by one-body molded to display part 36a and jut 36b, also can be formed respectively and be combined by different materials.Jut 36b is formed by tool material springy.In addition, can like that one end lateral buckling of the left and right directions of display part 36a be formed to jut 36b as shown in Figure 7 A, also can be as shown in Figure 7 B, one end lateral bending of the left and right directions of display part 36a is converted into shorter and form jut 36b than the size of the short transverse of display part 36a.

Display board 31 has and shows the display part 37a of cold-producing medium name and start from one end of display part 37a and extending with the orthogonal direction of the display surface of display part 37a the jut 37b arranging.On jut 37b, be provided with the installation portion 37c of C word shape.Display part 37a is for example made up of flat parts, is installing under the state of display board 37, shows " R32 " and " being expressed as the mark of combustible refrigerant " as cold-producing medium name on face toward the outer side.Installation portion 37c utilizes elastic force and is embedded in cold-producing medium and injects with the threaded portion neck of maintenance port 23.Installation portion 37c is embedded in cold-producing medium and injects the threaded portion neck with maintenance port 23, thus, display part 37a can be remained at least one face of hexa-prism of sealing hex nut 24.

Like this, the not only kind of cold-producing medium, can also append the mark (for example, pattern or figure etc.) or the initial that represent combustible refrigerant, can also express the word of points for attention.If such display board 37 is set, more can improve the effect that points out to operating personnel than display board 36.

Owing to having display board 36 or display board 37, in the time installing or safeguard off-premises station 2, in the situation that carrying out cold-producing medium injection, operating personnel, before pulling down the sealing operation of hex nut 24 of cold-producing medium injection maintenance port 23, must pull down display board 36.This is because if do not pull down display board 36, just can not hang spanner with card on hex nut 24 in sealing., display board 36 and display board 37 are while pulling down sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As mentioned above, according to the off-premises station 2 of embodiment 2, owing to thering is the accessory (display board 36 or display board 37) of the operation that is accompanied by operating personnel in the time pulling down sealing with hex nut 24, than only the kind of cold-producing medium being recorded in to seal etc. and being pasted on the method for connection valve periphery, can make operating personnel understand effectively the kind of the cold-producing medium of use.Therefore, in the time of refrigerant charge operation, operating personnel can not enclose cold-producing medium mistakenly, can improve security, in addition, does not worry the reduction of performance and the quality of aircondition A.Particularly, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to there is flammable cold-producing medium, remarkable from the viewpoint effect of security, in addition, can suppress global warming.

Embodiment 3

Fig. 8 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 3 of the present utility model is described.According to Fig. 8, the situation of operating personnel being identified to the kind of the cold-producing medium of enclosing aircondition A describes.In this embodiment 3, give identical Reference numeral for the part identical with embodiment 1,2, centered by the point different from embodiment 1,2, describe.

In the off-premises station 2 of embodiment 3, be provided with in display board 38 this point different from the off-premises station 2 of embodiment 1 as pointing out mechanism.As shown in Figure 8, the off-premises station 2 of embodiment 3 represents the display board 38 of cold-producing medium name with the part setting that is hexa-prism of hex nut 24 in sealing.In addition, about hex nut 24 for sealing, can not change, also can change over the hex nut 34 for sealing of explanation in embodiment 1.

Display board 38 has the display part 38a of demonstration cold-producing medium name and starts from one end of display part 38a to extend in the direction of the display surface that extends display part 38a the jut 38b arranging.On jut 38b, be provided with and the installation portion 38c that seals the ring-type corresponding with the hexa-prism of hex nut 24.Display part 38a is for example made up of flat parts, is being installed under the state of display board 38, shows " R32 " as cold-producing medium name on face toward the outer side.Installation portion 38C embeds the hexa-prism of sealing hex nut 24, and jut 38b is installed to sealing with on hex nut 24.

Display board 38 also can form as one display part 38a and jut 38b by resin or metal etc., also can be formed and be combined by different materials respectively.And display board 37 as illustrated in embodiment 2, the not only kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or shows the word of points for attention.

Owing to having display board 38, in the situation that install when the off-premises station 2 or time of maintenance etc. carried out cold-producing medium injection, operating personnel, taking off before cold-producing medium injects the sealing operation of hex nut 24 with maintenance port 23, must first take off display board 38.If this is owing to not taking off display board 38, just spanner card can not be hung over to sealing with on hex nut 24., display board 38 is while taking off sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As previously discussed, according to the off-premises station 2 of embodiment 3, owing to thering is the accessory (display board 38) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, than only the kind of cold-producing medium being documented on seal and attaching to the method for connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially,, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to have flammable cold-producing medium, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

Embodiment 4

Fig. 9 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 4 of the present utility model is described.According to Fig. 9, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 4, to the part identical with embodiment 1～3 mark prosign, and by with the difference of embodiment 1～3 centered by describe.

In the off-premises station 2 of embodiment 4, that display board 40 is set is different from the off-premises station 2 of embodiment 1 as pointing out in mechanism's this point.As shown in Figure 9, the off-premises station 2 of embodiment 4 arranges the groove 39 of all shapes in the part that is hexa-prism with hex nut 24 in sealing, the display board 40 that has shown cold-producing medium name is set on this groove 39.In addition, for hex nut 24 for sealing, can not change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.And groove 39 also can not be formed as all shapes, be formed as the degree that at least a portion of the sealing part that is hexa-prism of hex nut 24, jut 40b can be installed.

Display board 40 has and shows the display part 40a of cold-producing medium name and from the back side of the display surface of display part 40a to extending with the orthogonal direction of the display surface of display part 40a the jut 40b arranging.On jut 40b, be provided with the installation portion 40c of C word shape.Display part 40a is for example made up of flat parts, is installing under the state of display board 40, shows " R32 " as cold-producing medium name on face toward the outer side.Installation portion 40c utilizes elastic force embedded groove 39.By by installation portion 40c embedded groove 39, display part 40a can be remained in the part that is hexa-prism of sealing with hex nut 24.

Display board 40 can form as one display part 40a and jut 40b by resin etc., also can be formed and be combined by different materials respectively.Jut 40b is formed by tool material springy.And as the display board 37 of explanation in embodiment 2, the not only kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or shows the word of points for attention.

Owing to thering is display board 40, in the time of the installation of off-premises station 2 or time of maintenance etc. carry out cold-producing medium injection, operating personnel, before carrying out that cold-producing medium is injected to the operation of taking off with the sealing hex nut 24 of maintenance port 23, must first take off display board 40.If this is owing to not taking off display board 40, just spanner can not be hung over to sealing with on hex nut 24., display board 40 is in the time taking off sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As previously discussed, according to the off-premises station 2 of embodiment 4, possesses the accessory (display board 40) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, thus, than the simple method that the kind of cold-producing medium is documented on seal and attaches to connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially, use R32 cold-producing medium and R290 cold-producing medium etc. there is flammable cold-producing medium time, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

Embodiment 5

Figure 10 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 5 of the present utility model is described.According to Figure 10, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 5, to the part identical with embodiment 1～4 mark prosign, and by with the difference of embodiment 1～4 centered by describe.

In the off-premises station 2 of embodiment 5, arranging, demonstration cover 41 is different from the off-premises station 2 of embodiment 1 as pointing out in mechanism's this point.As shown in figure 10, the off-premises station 2 of embodiment 5 arranges the demonstration cover 41 of the tubular that has shown cold-producing medium name in the part that is hexa-prism with hex nut 24 in sealing.In addition, for hex nut 24 for sealing, can not change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.

Show " R32 " that cover 41 shows as cold-producing medium name, be configured to the part that is hexa-prism that covers sealing hex nut 24., show that cover 41 inserts the hexa-prism of sealing hex nut 24 in inside, cover the periphery of the hexa-prism of sealing hex nut 24.Show that cover 41 can be at the both ends open of tubular, an end opening of the tubular that also can only insert with the hexa-prism of hex nut 24 in sealing.Show that cover 41 can be formed by elastomeric elements such as resin, metal, rubber.And as the display board 37 of explanation in embodiment 2, the not only kind of cold-producing medium, can also append and represent it is mark or the initial of combustible refrigerant, or represents the word of points for attention.

Owing to possessing the cover of demonstration 41, in the time of the installation of off-premises station 2 or time of maintenance etc. carry out cold-producing medium injection, operating personnel, taking off before cold-producing medium injects the sealing operation of hex nut 24 with maintenance port 23, must first take off and show cover 41.If this is owing to not taking off display board 41, just spanner card can not be hung over to sealing with on hex nut 24., display board 41 is in the time taking off sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As previously discussed, according to the off-premises station 2 of embodiment 5, possess and in the time taking off sealing with hex nut 24, attend by the accessory (display board 41) with operating personnel's operation, thus, than the simple method that the kind of cold-producing medium is documented on seal and attaches to connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially,, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to have flammable cold-producing medium, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

Embodiment 6

Figure 11 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 6 of the present utility model is described.According to Figure 11, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 6, to the part identical with embodiment 1～5 mark prosign, and by with the difference of embodiment 1～5 centered by describe.

In the off-premises station 2 of embodiment 6, that display board 42 is set is different from the off-premises station 2 of embodiment 1 as pointing out in mechanism's this point.As shown in figure 11, the off-premises station 2 of embodiment 6 injects the display board 42 that demonstration cold-producing medium name is set with the threaded portion neck of maintenance port 23 at cold-producing medium.In addition, about hex nut 24 for sealing, can not make and change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.

Display board 42 has the jut 42b that shows that the display part 42a of cold-producing medium name and the one end from display part 42a arrange to the direction extension of the presentation surface prolongation of display part 42a.The installation portion 42c that injects the ring-type corresponding with the threaded portion neck of maintenance port 23 with cold-producing medium is set on jut 42b.Display part 42a is for example made up of flat parts, is installing under the state of display board 42, on the face of using hex nut 24 directions towards sealing, shows " R32 " as cold-producing medium name.Installation portion 42c is arranged on cold-producing medium and injects with on the threaded portion neck of maintenance port 23.

That is, be installed under the state of threaded portion neck of cold-producing medium injection maintenance port 23 at display board 42, sealing is arranged on cold-producing medium with hex nut 24 and injects with on maintenance port 23.Thus, display board 42 is stoped and comes off with hex nut 24 by sealing.And operating personnel, in the time spanner card being hung on sealing use hex nut 24, can see the display part 42a of display board 42.

Display board 42 can be formed as one display part 42a and jut 42b by resin or metal etc., but also can be formed and be combined by different materials respectively.And, as the display board 37 of explanation in embodiment 2, be not only the kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or show the word of points for attention.

Owing to possessing display board 42, in the time carrying out the installation of off-premises station 2 or time of maintenance etc. carry out cold-producing medium injection, operating personnel can see display board 42 taking off when cold-producing medium injects the sealing hex nut 24 with maintenance port 23.This is use hex nut 24 and can not come off because display board 42 is installed as by sealing.And, in the time that hose for pouring 26 is installed, sometimes must take off display board 42.This is to inject with on maintenance port 23 owing to hose for pouring 26 must being arranged on reliably to cold-producing medium., display board 42 is in the time taking off sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As previously discussed, according to the off-premises station 2 of embodiment 6, possesses the accessory (display board 42) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, thus, compare the method that only kind of cold-producing medium is documented on seal and attaches to connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially,, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to have flammable cold-producing medium, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

Embodiment 7

Figure 12～Figure 14 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 7 of the present utility model is described.According to Figure 12～Figure 14, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 7, to the part identical with embodiment 1～6 mark prosign, and by with the difference of embodiment 1～6 centered by describe.

In the off-premises station 2 of embodiment 7, arranging, demonstration cover 43 is different from the off-premises station 2 of embodiment 1 as pointing out in mechanism's this point.As shown in Figure 12～Figure 14, in the off-premises station 2 of embodiment 7, be provided with and show cover 43, it is (following that one end of this demonstration cover is arranged on the refrigerant piping connector of the main body of gas side pipe arrangement connection valve 9, be called refrigerant piping connector 45) root portion, other end handling cover at least a portion of the part that is hexa-prism of hex nut 24 for sealing freely.In addition, about hex nut 24 for sealing, can not make and change, also can change into the hex nut 34 for sealing illustrating in embodiment l.

Show that cover 43 shows cold-producing medium name, have: handling cover the display part 43a of the part that is hexa-prism of sealing hex nut 24 freely, a part of display part 43a is extended to the extension setting unit 43b that is arranged at refrigerant piping connector 45, be arranged on the one end of extending setting unit 43b the installation portion 44 that is arranged on the ring-type of the root portion of refrigerant piping connector 45, the setting unit 43b bend 46 that 44 bendings are connected freely with installation portion will be extended, and be formed on display part 43a with form the state of the part that is hexa-prism of extending the side that a side of setting unit 43b is contrary and covering sealing hex nut 24 at display part 43a under with the sealing projection 47 of hex nut 24 butts.

In addition, extension setting unit 43b, installation portion 44, bend 46, projection 47 are equivalent to " maintaining part " of the present utility model.

Display part 43a is for example as Figure 12 and be configured to as shown in Figure 13 and have the face parallel with at least 2 faces of the sealing part that is hexa-prism of hex nut 24 and the face parallel with the front end of sealing hex nut 24, and at least one face of these faces demonstration as " R32 " of cold-producing medium name.In Figure 12 and Figure 13, exemplified with the nearby state of the one side demonstration cold-producing medium name of side of the paper at display part 43a.

Extending setting unit 43b is connected display part 43a with installation portion 44.Extend setting unit 43b and for example there is following length, that is, and from refrigerant piping connector 45 till cold-producing medium injects the length of the degree of the threaded portion neck of using maintenance port 23.In addition, in Figure 12 and Figure 13, be formed as making a direction towards refrigerant piping connector 45 of display part 43a to extend the shape arranging exemplified with extending setting unit 43b, but as shown in figure 14, can be also, with resin, fiber, metal etc., extension setting unit 43b is configured to belt shape.

Installation portion 44 is inserted refrigerant piping connector 45 in the part that is formed as ring-type, and is installed in refrigerant piping connector 45.

Bend 46 is configured to hinge, is installed under the state of root portion of refrigerant piping connector 45 at installation portion 44, makes display part 43a and extends setting unit 43b and move.In addition, as shown in figure 14, in the situation that to make to extend setting unit 43b be banded, do not need to arrange bend 46.

Projection 47 is formed as, when from the contrary side of the formation side with extending setting unit 43b of display part 43a, when sealing is taken off display part 43a by the part that is hexa-prism of hex nut 24, hang over the position of the part that is hexa-prism of sealing hex nut 24 at card, side-prominent with hex nut 24 to sealing.That is, by display part 43a and projection 47, show that cover 43 is embedded in the part that is hexa-prism of sealing hex nut 24, cover sealing hex nut 24.In addition, as shown in figure 14, in the situation that display part 43a is formed as covering shape, do not need to arrange projection 47.

Specifically, show that cover 43 covers sealing with on the position of hex nut 24 once be pressed into, projection 47 contacts with hex nut 24 with sealing, and be fixed on this position, when receiving when taking off the power of direction, projection 47 deflection due to elasticity, makes projection 47 unload from sealing hex nut 24.Thus, show cover 43 via bend 46 towards opening by the contrary side of hex nut 24 with sealing.

Show that cover 43 can be formed as one display part 43a, extension setting unit 43b, installation portion 44, projection 47 by resin, metal etc., also can be formed and be combined by different materials respectively.Projection 47 is formed by tool material springy.And, as the display board 37 of explanation in embodiment 2, be not only the kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or show the word of points for attention.

Owing to possessing the cover of demonstration 43, in the time carrying out the installation of off-premises station 2 or time of maintenance etc. carry out cold-producing medium injection, operating personnel, before taking off the sealing operation of hex nut 24 of cold-producing medium injection maintenance port 23, must first take off the display part 43a that shows cover 43.If this is to show cover 43 owing to not taking off, spanner card can not be hung over to sealing with on hex nut 24., show that cover 43 is in the time taking off sealing with hex nut 24, to be accompanied by one of accessory of operating personnel's operation.

As previously discussed, according to the off-premises station 2 of embodiment 7, possesses the accessory (showing cover 43) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, thus, than only the kind of cold-producing medium being documented on seal and attaching to the method for connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially, use R32 cold-producing medium and R290 cold-producing medium etc. there is flammable cold-producing medium time, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.

Embodiment 8

Figure 15～Figure 17 is the key diagram of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 8 of the present utility model is described.According to Figure 15～Figure 17, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 8, to the part identical with embodiment 1～7 mark prosign, and by with the difference of embodiment 1～7 centered by describe.

In the off-premises station 2 of embodiment 8, in embodiment 5, the mounting means of demonstration cover 41 of explanation is different with the off-premises station 2 of embodiment l.In the following description, in order to be called and to show cover 41A with the demonstration cover difference of embodiment 5.As shown in figure 15, the off-premises station 2 of embodiment 8 is as illustrated in embodiment 5, and the demonstration cover 41A of the tubular that shows cold-producing medium name is set in the part that is hexa-prism in sealing with hex nut 24.In addition, about hex nut 24 for sealing, can not change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.

Show cover 41A and show that cover 41 is identical, showing " R32 " as cold-producing medium name, and being configured to the part that is hexa-prism that covers sealing hex nut 24., show that cover 41A is inserted with the hexa-prism of sealing hex nut 24 in inside, cover the periphery of the hexa-prism of sealing hex nut 24.Can make the both ends open of the tubular that shows cover 41A, also can only make to seal an end opening of the tubular inserting with the hexa-prism of hex nut 24.Show that cover 41A can be formed by elastomeric elements such as resin, metal, rubber.And, as the display board 37 of explanation in embodiment 2, be not only the kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or show the word of points for attention.

Show upper " R32 " showing as cold-producing medium name of cover 41A, also can show by mint-mark " R32 " (following, to be called mint-mark display part 80).If mint-mark display part 80 is presented at the bottom surface that shows cover 41A, to show that cover is not easy when 41A in sight having installed, and therefore may be displayed on the position of easily seeing nearby, side that shows cover 41A.

In the time of installation exercise and while maintenance, in the time that demonstration cover 41A is taken off, directly lost sometimes, weakened the effect as cold-producing medium identification component.Therefore, will show that cover 41A is arranged in side panel 66 via banded linking part 70.By like this, due to can not by show cover 41A from the side panel 66 take off, show cover 41A so also exist in the time injecting cold-producing medium afterwards for many years.

When linking part 70 is too short, is difficult to handling and shows cover 41A, in the time that linking part 70 is long, can hinder operation.Therefore, as shown in figure 16, linking part 70 is formed as one with showing cover 41A, be formed as the length of 3～5 times of the size (height dimension) that shows cover 41A.Thus, workability can not worsen.In addition, also can split form linking part 70 and show cover 41A.No matter which kind of structure, the cardinal extremity of linking part 70 links with showing cover 41A.

And the front end (not with the end that shows that cover 41A is connected) of linking part 70 is arranged in side panel 66.In the time that linking part 70 is arranged in side panel 66, fix etc. and to make to show that cover 41A can not come off by screw thread, the leading section of linking part 70 is fixed in side panel 66.But, be not limited to leading section fixing that fixedly carries out linking part 70 with screw thread.For example, also the leading section of linking part 70 can be configured to the shape as shown in Figure 16 and Figure 17.

Concrete configuration example to linking part 70 describes.Linking part 70 has: connect the main part 74 of front and base end side, the connecting portion 73 that is positioned at front end and is formed as the front end engaging portion 71 of the such shape of arrow, is connected with main part 74 by base end side (showing cover 41A side) and the rib 72 working as retainer and by front end engaging portion 71 and rib 72 than front end engaging portion 71.In addition, front end engaging portion 71 and rib 72 form the leading section of linking part 70.And, in the case of forming whole linking part 70, do not need to arrange connecting portion 73.

Front end engaging portion 71 is inserted in the hole forming in side panel 66, has the function in side panel 66 by all engagings of linking part 70.Front end engaging portion 71 is formed as from front end towards cardinal extremity hole enlargement, and in the time being inserted in the hole that is formed at side panel 66, is subject to the effect in this hole and elastic deformation.Then,, in the time of being all inserted into of the part after hole enlargement, elastic deformation is removed, the base end side part of front end engaging portion 71 and the inwall butt of side panel 66.Like this, by front end engaging portion 71 and side panel 66 engagings, and being all arranged in side panel 66 linking part 70.And the inwall butt of base end side part and side panel 66 by front end engaging portion 71, can prevent from coming off.

Rib 72 is configured to bowl shape, under the state of front end engaging portion 71 and side panel 66 engagings, is positioned at outline one side of side panel 66.Specifically, the suctorial function of rib 72 tool, by being adsorbed on the outer surface of side panel 66, can work as maintaining the retainer that linking part 70 is attached to the state on side.

Connecting portion 73 is the parts for front end engaging portion 71 and rib 72 are connected with main part 74.Connecting portion 73 is formed as the shape of stretching out to the outer circumferential side of main part 74, further prevents that front end engaging portion 71 and rib 72 from simply coming off from main part 74.

Main part 74 can be out of shape, and links with showing cover 41.

As previously discussed, according to the off-premises station 2 of embodiment 8, possesses the accessory (showing cover 41A) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, thus, than only the kind of cold-producing medium being documented on seal and attaching to the method for connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially,, in the time using R32 cold-producing medium and R290 cold-producing medium etc. to have flammable cold-producing medium, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.And, needn't worry to show that cover 41A loses, can contribute to long security.

Embodiment 9

Figure 18 and Figure 19 are the key diagrams of the specification of the pipe arrangement connection valve of the off-premises station 2 for embodiment 9 of the present utility model is described.According to Figure 18 and Figure 19, the situation that operating personnel's identification is sealing into the kind of the cold-producing medium in aircondition A describes.In this embodiment 9, to the part identical with embodiment 1～8 mark prosign, and by with the difference of embodiment 1～8 centered by describe.

In the off-premises station 2 of embodiment 8, the illustrated structure of demonstration cover 41 of embodiment 5 is different with the off-premises station 2 of embodiment 1.In the following description, to be called in order distinguishing with the demonstration cover of embodiment 5 and to show cover 41B.As shown in Figure 18 and Figure 19, the off-premises station 2 of embodiment 8, as illustrated at embodiment 5, arranges the demonstration cover 41B of the tubular that has shown cold-producing medium name in the part that is hexa-prism 71 in sealing with hex nut 24.In addition, about hex nut 24 for sealing, can not change, also can change into the hex nut 34 for sealing of explanation in embodiment 1.

Show and cover 41B and show cover 41 similarly, form to show as the mode of " R32 " of cold-producing medium name the part that is hexa-prism of covering sealing hex nut 24., show that cover 41B is inserted with the hexa-prism of sealing hex nut 24 in inside, and cover the periphery of the hexa-prism of sealing hex nut 24.The two ends that show the sealing tubular of cover 41B can opening, also can only seal an end opening of the tubular of the hexa-prism that is inserted into sealing hex nut 24.Show that cover 41B can be formed by elastomeric elements such as resin, metal, rubber.And as the display board 37 of explanation in embodiment 2, the not only kind of cold-producing medium, can also append and represent it is mark and the initial of combustible refrigerant, or shows the word of points for attention.

Showing that on cover 41B, demonstration, as " R32 " of cold-producing medium name, similarly form but also can cover 41A with demonstration the mint-mark display part 80 that shows " R32 " by mint-mark.If mint-mark display part 80 is presented at the bottom surface that shows cover 41B, to show that cover is not easy when 41A in sight having installed, and is therefore presented at the position of easily seeing nearby, side that shows cover 41A for well.

Show that cover 41B is arranged on sealing with on hex nut 24 with the state tilting sometimes.In the time that water droplet condenses in cold-producing medium injection maintenance port 23, water accumulates in and shows in cover 41B.Accumulate in and show in cover 41B and the state continuance of not discharging, likely can corrode sealing hex nut 24 at water.Therefore, show the upper osculum 81 that forms of cover 41B.Thus, can discharge accumulating in the water showing in cover 41B, can prevent that sealing hex nut 24 is corroded.

In the time considering to show the intensity of cover 41B, compare the bottom surface (face of a side contrary with open surface) that shows cover 41B is all opened and formed osculum 81, preferably, as shown in Figure 18 and Figure 19, residual lower criss-cross rib 82, makes the part of being left become osculum 81.And, as shown in figure 19, use the linking part 70 of explanation in embodiment 8 that demonstration cover 41B is arranged in side panel 66.

As previously discussed, according to the off-premises station 2 of embodiment 9, possesses the accessory (showing cover 41B) that is accompanied by operating personnel's operation in the time taking off sealing with hex nut 24, thus, than only the kind of cold-producing medium being documented on seal and attaching to the method for connection valve periphery, can make operating personnel identify reliably the kind of used cold-producing medium.Therefore, in the time of cold-producing medium filling operation, the misplacement that operating personnel can not carry out cold-producing medium enters, and can improve security, and, do not worry the reduction of performance and the quality of aircondition A.Especially, use R32 cold-producing medium and R290 cold-producing medium etc. there is flammable cold-producing medium time, from the viewpoint of security, effect is remarkable, and can contribute to suppress global warming.And, needn't worry that sealing hex nut 24 is corroded, and can contribute to long security.

In embodiment 2～9, do not specify display board 36, display board 37, display board 38, display board 40, show the appearance color that covers 41 (comprise and show cover 41A, demonstration cover 41B), display board 42, demonstration cover 43.But due to also different according to the Show Color of the different cold-producing medium high-pressure gas cylinders of cold-producing medium, therefore the appearance color of these display boards and demonstration cover is preferably identical with the color of cold-producing medium high-pressure gas cylinder, to easily know the kind of cold-producing medium.For example, the high-pressure gas cylinder of cold-producing medium R32 represents that look is light blue, and institute is so that display board and show that cover is also light blue for well.

Description of reference numerals

1 indoor set, 2 off-premises stations, 3 compressors, 4 cross valves, 5 outdoor heat converters, 6 flow systems are driven device, 7 extend pipe arrangement, 8 hydraulic fluid side pipe arrangement connection valves, 9 gas side pipe arrangement connection valves, 10 pipe arrangement cover of upholstery, 11 indoor heat converters, 12 liquid pipe side line jointings, 13 gas side pipe arrangement jointings, 14 drive units, 15 outdoor air supply motors, 16 outdoor fans, 17 terminal boards, 18 indoor air supply motors, 19 Air Blast fans, 20 terminal boards, 21 installing plates, 22VVF cable, 23 cold-producing medium injection maintenance ports, 24 sealing hex nuts, 25 vavuum pumps, 26 hose for pouring, 27 pressure gauges, 28 valve rod hex nuts, OI die nut, 30 flue side valve bars, 31 valve rod hex nuts, 32 liquid pipe side valve bars, 33 valves, 34 envelope 11:: with hex nut, 35 show, 36 display boards, 36a display part, 36b jut, 36c installation portion, 37 display boards, 37a display part, 37b jut, 37c installation portion, 38 display boards, 38a display part, 38b jut, 38c installation portion, 39 grooves, 40 display boards, 40a display part, 40b jut, 40c installation portion, 41 show cover, 41a shows cover, 41B shows cover, 42 display boards, 42a display part, 42b jut, 42c installation portion, 43 show cover, 43a display part, 43b extends setting unit, 44 installation portions, 45 refrigerant piping connectors, 46 bends, 47 projections, 51 support platform, 52 base stations, 53 electricity piece casees, 54 frameworks, 55 front surface the Appearance Panels, 56 indoor drive units, 57 suction inlets, 58 blow-off outlets, 59 screws, 60 heat insulation materials, 61 bands, 62 panels, 63 peristomes, 64 fan protection parts, 65 top boards, 66 side panel, 67 cable hoods, 68 peristomes, 70 linking parts, 71 front end engaging portions, 72 ribs, 73 connecting portions, 74 main parts, 80 mint-marks show, 81 osculums, 82 ribs, A aircondition.

Claims (22)

1. an off-premises station, has the refrigerant piping connection valve that is provided with cold-producing medium injection maintenance port, and this cold-producing medium injection is sealed by the sealing hex nut taking off in the time injecting cold-producing medium with maintenance port, it is characterized in that possessing:

The cold-producing medium that makes at least one in external diameter, shape and the outward appearance of described sealing hex nut and be arranged on the cold-producing medium that uses other kinds injects structure different with the hex nut of the sealing on maintenance port; And/or

In the time taking off described sealing hex nut, need operating personnel operation point out mechanism.

2. off-premises station as claimed in claim 1, it is characterized in that, thering is the described sealing operating by specific purpose tool with in the off-premises station of hex nut, described sealing is injected with maintenance port corresponding with the diameter of thread of the hex nut described cold-producing medium following with 1/2 inch, more than opposite side size is configured to 18mm.

3. off-premises station as claimed in claim 1 or 2, is characterized in that, shows the kind of cold-producing medium at least one face in described sealing by the part that is hexa-prism of hex nut.

4. off-premises station as claimed in claim 1, it is characterized in that, having in the off-premises station that points out mechanism of the operation that is accompanied by operating personnel in the time taking off described sealing hex nut, described in point out mechanism and show the kind of the cold-producing medium using or note at least one in word.

5. off-premises station as claimed in claim 4, is characterized in that, described in point out mechanism and have:

Display part, described display part is recorded the kind of the cold-producing medium using to some extent and is noted at least one in word; And

Jut, described jut is arranged on described display part in described refrigerant piping connection valve.

6. off-premises station as claimed in claim 5, is characterized in that, described display part is maintained at by described jut at least one face of the face that is hexa-prism of described sealing hex nut.

7. the off-premises station as described in claim 5 or 6, is characterized in that, is provided with the installation portion of C font on described jut,

Described installation portion utilizes its elastic force to be embedded in described refrigerant piping connection valve, and thus, described jut is installed in described refrigerant piping connection valve.

8. off-premises station as claimed in claim 4, is characterized in that, described in point out mechanism and have:

Display part, described display part is recorded the kind of the cold-producing medium using to some extent and is noted at least one in word; And

Jut, described jut is arranged on described sealing with on hex nut by described display part.

9. off-premises station as claimed in claim 8, is characterized in that, is provided with the installation portion of ring-type on described jut,

Described installation portion is embedded in the hexa-prism of described sealing hex nut, and thus, described jut is installed in described sealing hex nut.

10. off-premises station as claimed in claim 4, is characterized in that, at least a portion in described sealing by the part that is hexa-prism of hex nut, forms groove,

The described mechanism that points out has:

Display part, described display part is recorded the kind of the cold-producing medium using to some extent and is noted at least one in word; And

Jut, described jut is arranged on described sealing with in the described groove of hex nut by described display part.

11. off-premises stations as claimed in claim 10, is characterized in that, are provided with the installation portion of C font on described jut,

Described installation portion utilizes its elastic force to be embedded in described sealing with in the described groove of hex nut, and thus, described jut is installed to described sealing with on hex nut.

12. off-premises stations as claimed in claim 4, it is characterized in that, the described demonstration cover that points out mechanism and have tubular, records the kind of the cold-producing medium using to some extent and notes at least one in word on this demonstration cover, and covers the periphery of the hexa-prism of described sealing hex nut.

13. off-premises stations as claimed in claim 12, is characterized in that, described demonstration cover is installed in the side panel that described refrigerant piping connection valve is installed via banded linking part.

14. off-premises stations as claimed in claim 13, is characterized in that, described linking part and described demonstration is hood-shaped becomes one.

15. off-premises stations as described in claim 13 or 14, is characterized in that, the length of described linking part is 3～5 times of height dimension of described demonstration cover.

16. off-premises stations as described in claim 13 or 14, is characterized in that, the leading section being arranged in described side panel of described linking part has:

Front end engaging portion, the inner face butt of described front end engaging portion and described side panel; And

Rib, described rib, is adsorbed on the outer surface of described side panel near base end side than described front end engaging portion.

17. off-premises stations as described in claim 13 or 14, is characterized in that, described demonstration covers at least a portion of bottom surface and is formed with osculum.

18. off-premises stations as claimed in claim 5, is characterized in that, are provided with the installation portion of ring-type on described jut,

Be installed in described cold-producing medium at described installation portion and inject with under the state on the threaded portion neck of maintenance port, described sealing hex nut is installed, thus, described jut is installed to described cold-producing medium and injects with on maintenance port.

19. off-premises stations as claimed in claim 4, is characterized in that, described in point out mechanism and have:

Display part, described display part is recorded the kind of the cold-producing medium using to some extent and is noted at least one in word, and handling cover the part that is hexa-prism of described sealing hex nut freely; And

Maintaining part, described display part is fixed on described refrigerant piping connection valve side by described maintaining part,

Described display part and described maintaining part bending are linked freely.

20. off-premises stations as claimed in claim 19, is characterized in that, described maintaining part is configured to and makes a direction towards the refrigerant piping connector of described refrigerant piping connection valve of described display part extend the shape arranging.

21. off-premises stations as claimed in claim 4, is characterized in that, described in point out mechanism and have:

Display part, described display part is recorded the kind of the cold-producing medium using to some extent and is noted at least one in word, and handling cover the part that is hexa-prism of described sealing hex nut freely;

The installation portion of annular, the installation portion of described annular is arranged on the root portion of the refrigerant piping connector of described refrigerant piping connection valve; And

Extend setting unit, described extension setting unit is configured to band shape, and described display part is connected with described installation portion.

22. 1 kinds of airconditions, possess:

Off-premises station described in any one in claim 1,4,8,10,12,13 or 19; And

The indoor set being connected with described off-premises station.