CN105241610A - Leak detection method of air conditioner indoor unit - Google Patents

Leak detection method of air conditioner indoor unit Download PDF

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Publication number
CN105241610A
CN105241610A CN201510635416.5A CN201510635416A CN105241610A CN 105241610 A CN105241610 A CN 105241610A CN 201510635416 A CN201510635416 A CN 201510635416A CN 105241610 A CN105241610 A CN 105241610A
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CN
China
Prior art keywords
evaporator
leak
refrigerant
leak detection
air conditioner
Prior art date
Application number
CN201510635416.5A
Other languages
Chinese (zh)
Inventor
马玉奇
刘庆赟
徐中华
孟兆菊
郝本华
耿宝寒
Original Assignee
青岛海尔空调器有限总公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 青岛海尔空调器有限总公司 filed Critical 青岛海尔空调器有限总公司
Priority to CN201510635416.5A priority Critical patent/CN105241610A/en
Publication of CN105241610A publication Critical patent/CN105241610A/en

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Abstract

The invention provides a leak detection method of an air conditioner indoor unit. One port of a refrigerant pipe of an evaporator of the air conditioner indoor unit is provided with a self-sealing valve, and the other port is provided with a sealing head. The leak detection method comprises a refrigerant leak detection mode. The refrigerant leak detection mode involves injecting a refrigerant into the evaporator through the self-sealing valve and then carrying out leak detection operation on the refrigerant pipe of the evaporator by use of a refrigerant leak detector. According to the invention, the refrigerant is injected into the evaporator and then leak detection is performed on the evaporator by use of the refrigerant leak detector such that correlation devices such as a helium detection vacuum chamber, a helium storage device and the like are omitted, the equipment investment is reduced, operators can perform the leak detection on the evaporator conveniently through the refrigerant leak detector, the evaporator does not have to be placed into the helium detection vacuum chamber for the leak detection, the leak detection process is simplified, and the efficiency is improved.

Description

The leak hunting method of indoor apparatus of air conditioner
Technical field
The present invention relates to air-conditioning equipment, particularly relate to a kind of leak hunting method of indoor apparatus of air conditioner.
Background technology
At present, air-conditioning quilt is widely used in people's daily life, and air-conditioning is divided into indoor set and off-premises station, is provided with evaporator in indoor set, is provided with condenser in off-premises station.After air-conditioning dispatches from the factory, be filled with refrigerant (freon) in the condenser of off-premises station, and be do not fill refrigerant in the evaporator of indoor set.And in actual production process, after evaporator processes, need to carry out leak detection process to evaporator, to judge whether evaporator the situation of secondary refrigerant leakage can occur.In prior art, carrying out leak hunting technology to evaporator is: the refrigerant pipe of evaporator connects rapid-acting coupling, the helium of certain pressure is inputted by rapid-acting coupling, then helium inspection vacuum tank is put into, take out after the assay was approved and reclaim helium from rapid-acting coupling again, after unloading rapid-acting coupling, shutoff nut that refrigerant pipe is screwed on, then be sent to general assembly and assemble.As from the foregoing, detect evaporator in prior art to need to put in helium inspection vacuum tank and hunt leak, leak detection process is loaded down with trivial details and efficiency is lower, and evaporator is in transportation, also easily occurs because collision generation refrigerant pipe occurs the phenomenon of crackle and causes equipment operational reliability to decline.How to design a kind of convenience to carry out hunting leak to evaporator and improve leak detection efficiency and the technology improving indoor apparatus of air conditioner quality is technical matters to be solved by this invention.
Summary of the invention
Technical matters to be solved by this invention is: the leak hunting method providing a kind of indoor apparatus of air conditioner, and the process realizing simplifying leak detection also improves leak detection efficiency.
Technical scheme provided by the invention is, a kind of leak hunting method of indoor apparatus of air conditioner, and the Single port of the refrigerant pipe of the evaporator of indoor apparatus of air conditioner is provided with enclosed valve, and another port is provided with end socket; Described leak hunting method comprises refrigerant leak detection pattern, and refrigerant leak detection pattern is: after injecting refrigerant by described enclosed valve in described evaporator, then, utilize refrigerant leak locator to carry out leak detection operation to the refrigerant pipe of described evaporator.
Further, described refrigerant leak detection pattern is specially: refrigerant leak locator carries out leak detection operation to the weld of refrigerant pipe in described evaporator.
Further, described end socket comprises cap body, mandrel and elastic baffle, one end face of described cap body is formed with blind hole, female thread structure is formed in described blind hole, the other end of described cap body offers the axis hole be communicated with described blind hole, and described mandrel is inserted in described axis hole, and described elastic baffle seals and is fixed in described blind hole and shelters from described axis hole, one end of described mandrel is connected on described elastic baffle, and described cap body is connected on the refrigerant pipe of described evaporator, carrying out refrigerant leak detection pattern after determining described evaporator No leakage point, described leak hunting method also comprises end socket leak detection pattern, described end socket leak detection pattern is: in described evaporator, inject gases at high pressure by described enclosed valve, after described evaporator internal pressure reaches setup pressure value, under the influence of air pressure, deformation makes the end of described mandrel expose outside described cap body by described elastic baffle, then, stop injecting gases at high pressure in described evaporator, if the end of mandrel exposes outside described cap, this is external, then judge that described evaporator is without leak source, otherwise, then judge that described evaporator has leak source.
Further, the middle part of described elastic baffle is formed with bulge-structure, and described bulge-structure is formed with draw-in groove, and an end of described mandrel is stuck in described draw-in groove.
Further, the junction forming station terrace of described blind hole and described axis hole, described step surface is formed with annular groove, and the edge card of described elastic baffle is in described annular groove.
Further, described in there is leak detection function end socket also comprise compacting ring and O-ring seal, described compacting ring and described O-ring seal are successively set in described blind hole, and described compacting ring is between described O-ring seal and described elastic baffle.
Further, the edge of described elastic baffle is also provided with annular flange, and described compacting ring is formed with annular slot, and described annular flange is inserted in described annular slot.
Further, the inner ring of described compacting ring is formed with capping, and described capping offers air hole, and the middle part of described elastic baffle is formed towards the outstanding teat of described capping, forms air cavity between described compacting ring and described elastic baffle.
The leak hunting method of indoor apparatus of air conditioner provided by the invention, by injecting refrigerant in evaporator, then, refrigerant leak locator is utilized to hunt leak to evaporator, eliminate relevant device such as helium inspection vacuum tank and helium storage etc., reduce equipment investment, operating personnel can be completed easily by refrigerant leak locator and hunt leak to evaporator, thus hunt leak without the need to evaporator being placed in helium inspection vacuum tank, the process simplifying leak detection improves efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the cut-open view of end socket in the leak hunting method embodiment of indoor apparatus of air conditioner of the present invention;
Fig. 2 is the cut-open view of the cap body of end socket in the leak hunting method embodiment of indoor apparatus of air conditioner of the present invention;
Fig. 3 is the cut-open view of the elastic baffle of end socket in the leak hunting method embodiment of indoor apparatus of air conditioner of the present invention;
Fig. 4 is the cut-open view of the compacting ring of end socket in the leak hunting method embodiment of indoor apparatus of air conditioner of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of leak hunting method of indoor apparatus of air conditioner, the Single port of the refrigerant pipe of the evaporator of indoor apparatus of air conditioner is provided with enclosed valve, and another port is provided with end socket; Described leak hunting method comprises refrigerant leak detection pattern, and refrigerant leak detection pattern is: after injecting refrigerant by described enclosed valve in described evaporator, then, utilize refrigerant leak locator to carry out leak detection operation to the refrigerant pipe of described evaporator.
Specifically, in the process that the evaporator of indoor apparatus of air conditioner is hunted leak, refrigerant is injected in evaporator, then, operating personnel directly carry out leak detection operation by refrigerant leak locator to the refrigerant pipe of evaporator, if the refrigerant pipe memory leak point of evaporator, then can be gone out by direct-detection by refrigerant leak locator.Generally, the weld of the refrigerant pipe of the leakage point generation of evaporator, then refrigerant leak detection pattern is specially: refrigerant leak locator carries out leak detection operation to the weld of refrigerant pipe in described evaporator.
Preferably, after leak detection operation being carried out to evaporator by refrigerant leak locator, qualified evaporator just can store preparation transport and dispatch from the factory, and in storage or operational process, also easily there is new leakage point because the factor such as falling in the evaporator of indoor apparatus of air conditioner, in order to improve the outgoing of product, reduce the amount of dispatching from the factory occurring underproof product, simultaneously, also indoor set and off-premises station in order to avoid there being leak source are online and cause the loss of off-premises station refrigerant, as Figure 1-Figure 4, end socket in the present embodiment comprises cap body 1, mandrel 2 and elastic baffle 3, one end face of described cap body 1 is formed with blind hole 11, female thread structure (not shown) is formed in described blind hole 11, the other end of described cap body 1 offers the axis hole 12 be communicated with described blind hole 11, described mandrel 2 is inserted in described axis hole 12, described elastic baffle 3 seals and is fixed in described blind hole 11 and shelters from described axis hole 12, one end of described mandrel 2 is connected on described elastic baffle 3, described cap body is connected on the refrigerant pipe of described evaporator, carrying out refrigerant leak detection pattern after determining described evaporator No leakage point, described leak hunting method also comprises end socket leak detection pattern, described end socket leak detection pattern is: in described evaporator, inject gases at high pressure by described enclosed valve, after described evaporator internal pressure reaches setup pressure value, under the influence of air pressure, deformation makes the end of described mandrel expose outside described cap body by described elastic baffle, then, stop injecting gases at high pressure in described evaporator, if the end of mandrel exposes outside described cap, this is external, then judge that described evaporator is without leak source, otherwise, then judge that described evaporator has leak source.Concrete, the cap body 1 of the end socket in the present embodiment can be connected on the Single port of the refrigerant pipe of evaporator by female thread structure, evaporator carried out after refrigerant leak detection detects completing, connect rapid-acting coupling by enclosed valve to realize being filled with gases at high pressure in evaporator, after air pressure in evaporator reaches set pressure, air pressure will act on elastic baffle 3, make elastic baffle 3 that deformation occur to protrude to axis hole 12 direction, cap body 1 is exposed outside to be with the end of moving mandrel 2, then, stop inflating evaporator, enclosed valve and cap body 1 will block the two-port of evaporator.And at product export or when installing in user family, more whether the mandrel 2 observing the end socket in the present embodiment is still exposed at cap body 1 to judge whether evaporator has leakage point outward.Concrete, if evaporator does not have leakage point, air pressure then in evaporator will remain unchanged, mandrel 2 will be exposed at outside cap body 1 outward all the time, otherwise if evaporator has leakage point, the air pressure in evaporator will diminish gradually, elastic baffle 3 will overcome atmospheric pressure and elastic reset, and mandrel 2 is shunk back in cap body 1.Wherein, the middle part of elastic baffle 3 is formed with bulge-structure 31, and described bulge-structure 31 is formed with draw-in groove 311, and an end of described mandrel 2 is stuck in described draw-in groove 311, and what mandrel 2 can be solid and reliable be stuck in realizes in draw-in groove 311 being connected with elastic baffle 3.In addition, the junction forming station terrace of blind hole 11 and described axis hole 12, described step surface is formed with annular groove 13, the edge card of described elastic baffle 3 is in described annular groove 13, utilize annular groove 13 to block the edge limiting elastic baffle 3, elastic baffle 3 can be made better to coordinate with cap body 1 assemble, play elastic baffle 3 and better seal up axis hole 12.
Further, the end socket in the present embodiment also comprises compacting ring 4 and O-ring seal 5, and described compacting ring 4 and described O-ring seal 5 are successively set in described blind hole 11, and described compacting ring 4 is between described O-ring seal 5 and described elastic baffle 3.Concrete, cap body 1 can be made to be sealedly connected on the refrigerant pipe port of evaporator by O-ring seal 5, and compacting ring 4 can be tightened in after on refrigerant pipe at cap body 1, elastic baffle 3 is pressed on step surface by compacting ring 4 closely, realizes elastic baffle 3 and better seals up axis hole 12.Wherein, the edge of elastic baffle 3 is also provided with annular flange 32, and described compacting ring 4 is formed with annular slot 41, and described annular flange 32 is inserted in described annular slot 41, makes compacting ring 4 better can apply balanced pressure to elastic baffle 3.Preferably, the inner ring of compacting ring 4 is formed with capping 42, and described capping 42 offers air hole 421, and the middle part of described elastic baffle 3 is formed towards the outstanding teat 33 of described capping 42, forms air cavity 34 between described compacting ring 4 and described elastic baffle 3.Concrete, the gases at high pressure of evaporator enter into air cavity 34 by air hole 421, and the air pressure in air cavity 34 is more stable, make the leak detection accuracy of the end socket in the present embodiment higher.
The leak hunting method of indoor apparatus of air conditioner provided by the invention, by injecting refrigerant in evaporator, then, refrigerant leak locator is utilized to hunt leak to evaporator, eliminate relevant device such as helium inspection vacuum tank and helium storage etc., reduce equipment investment, operating personnel can be completed easily by refrigerant leak locator and hunt leak to evaporator, thus hunt leak without the need to evaporator being placed in helium inspection vacuum tank, the process simplifying leak detection improves efficiency.In addition, before indoor apparatus of air conditioner dispatches from the factory or when locating to install to user, all can judge whether the evaporator of indoor apparatus of air conditioner is damaged in transport or storing process by the end socket with leak detection function intuitively, thus avoid, by online to the indoor apparatus of air conditioner and off-premises station that there are quality problems and cause the refrigerant in off-premises station to waste, effectively raising the outgoing of indoor apparatus of air conditioner.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (8)

1. a leak hunting method for indoor apparatus of air conditioner, is characterized in that, the Single port of the refrigerant pipe of the evaporator of indoor apparatus of air conditioner is provided with enclosed valve, and another port is provided with end socket; Described leak hunting method comprises refrigerant leak detection pattern, and refrigerant leak detection pattern is: after injecting refrigerant by described enclosed valve in described evaporator, then, utilize refrigerant leak locator to carry out leak detection operation to the refrigerant pipe of described evaporator.
2. the leak hunting method of indoor apparatus of air conditioner according to claim 1, is characterized in that, described refrigerant leak detection pattern is specially: refrigerant leak locator carries out leak detection operation to the weld of refrigerant pipe in described evaporator.
3. the leak hunting method of indoor apparatus of air conditioner according to claim 1, it is characterized in that, described end socket comprises cap body, mandrel and elastic baffle, one end face of described cap body is formed with blind hole, female thread structure is formed in described blind hole, the other end of described cap body offers the axis hole be communicated with described blind hole, described mandrel is inserted in described axis hole, described elastic baffle seals and is fixed in described blind hole and shelters from described axis hole, one end of described mandrel is connected on described elastic baffle, and described cap body is connected on the refrigerant pipe of described evaporator, carrying out refrigerant leak detection pattern after determining described evaporator No leakage point, described leak hunting method also comprises end socket leak detection pattern, described end socket leak detection pattern is: in described evaporator, inject gases at high pressure by described enclosed valve, after described evaporator internal pressure reaches setup pressure value, under the influence of air pressure, deformation makes the end of described mandrel expose outside described cap body by described elastic baffle, then, stop injecting gases at high pressure in described evaporator, if the end of mandrel exposes outside described cap, this is external, then judge that described evaporator is without leak source, otherwise, then judge that described evaporator has leak source.
4. the leak hunting method of indoor apparatus of air conditioner according to claim 3, is characterized in that, the middle part of described elastic baffle is formed with bulge-structure, and described bulge-structure is formed with draw-in groove, and an end of described mandrel is stuck in described draw-in groove.
5. the leak hunting method of indoor apparatus of air conditioner according to claim 3, is characterized in that, the junction forming station terrace of described blind hole and described axis hole, described step surface is formed with annular groove, and the edge card of described elastic baffle is in described annular groove.
6. the leak hunting method of indoor apparatus of air conditioner according to claim 3, it is characterized in that, the described end socket with leak detection function also comprises compacting ring and O-ring seal, described compacting ring and described O-ring seal are successively set in described blind hole, and described compacting ring is between described O-ring seal and described elastic baffle.
7. the leak hunting method of indoor apparatus of air conditioner according to claim 6, is characterized in that, the edge of described elastic baffle is also provided with annular flange, and described compacting ring is formed with annular slot, and described annular flange is inserted in described annular slot.
8. the leak hunting method of indoor apparatus of air conditioner according to claim 6, it is characterized in that, the inner ring of described compacting ring is formed with capping, described capping offers air hole, the middle part of described elastic baffle is formed towards the outstanding teat of described capping, forms air cavity between described compacting ring and described elastic baffle.
CN201510635416.5A 2015-09-30 2015-09-30 Leak detection method of air conditioner indoor unit CN105241610A (en)

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CN108167447A (en) * 2017-12-25 2018-06-15 广东美的制冷设备有限公司 Detect valve, nitrogen charging detection components and air-conditioning equipment

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN106481927A (en) * 2016-12-16 2017-03-08 珠海格力电器股份有限公司 Seal cap device
CN106481927B (en) * 2016-12-16 2019-03-29 珠海格力电器股份有限公司 Seal cap device
CN108167447A (en) * 2017-12-25 2018-06-15 广东美的制冷设备有限公司 Detect valve, nitrogen charging detection components and air-conditioning equipment

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Application publication date: 20160113