CN1330914C - Refrigerating storage cabinet - Google Patents
Refrigerating storage cabinet Download PDFInfo
- Publication number
- CN1330914C CN1330914C CNB2005100595427A CN200510059542A CN1330914C CN 1330914 C CN1330914 C CN 1330914C CN B2005100595427 A CNB2005100595427 A CN B2005100595427A CN 200510059542 A CN200510059542 A CN 200510059542A CN 1330914 C CN1330914 C CN 1330914C
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- cooling tube
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- case
- cooling
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- Refrigerator Housings (AREA)
Abstract
This invnetion discloses a cooling storage cabinet effectively eliminating problems occurring at a welded part of a cooling pipe. A refrigerating chamber 1 comprises an insulation casing 6 formed by foaming and filling a foam heat insulating material 4 between an inner box 2 and an outer box 3 having the cooling pipe 14 fixed on the outer surface. The welded place of the cooling pipe 14 is arranged outside the foam heat insulating material 4. The plurality of cooling pipes 14A, 14C is fixed on the inner box 2 and respectively connected with each other at the welded place. The welded part of the cooling pipes 14 is arranged inside the inner box 2 and covered by a detection plate 28.
Description
Technical field
The present invention relates to a kind of cooling storage shedly, it is by foam filled between interior case and outer container and the heat insulating box that forms constitutes with heat-barrier material, and with cooling tube be installed in above-mentioned in the outside of case.
Background technology
In the past, this kind is cooling storage shed, the freezer that for example has what is called pipe dress template (the チ コ one Block オ Application シ one ト type) refrigerator of top opening, be pasted with the cooling tube (copper or aluminum) of a plurality of refrigerant loops in the outside of interior case (for example aluminum), be welded to each other and connect in the outer container of packing into after each cooling tube, under the state in being disposed at the frothing clamp of regulation, constitute heat insulating box (for example, with reference to patent documentation 1) by heat-barrier materials such as foam filled polyurethane between two casees.
So cooling storage shed in because the cooling tube welding position occurs fatal quality problems if failure welding can cause gas leakage, so the air test of strictness is necessary.This air test was sealed in elevated pressure nitrogen in the cooling tube from begin for example to have in the past, confirmed the method that whether has bubble to produce at weld with suds; The helium detection method; Halogen leak detection method etc.Wherein, though confirm that with bubble the method for leaking is not good enough on reliability, advantage cheap and that can implement is arranged.And the helium detection method needs the cost of equipment of high price.In addition, though halogen leak detection method reliability height produces pernicious gas during welding sequence after it, perhaps the oil to the ester system that uses in the refrigerant loop has negative effect, has the danger that produces oxide.
Therefore, actually, common way is at first to utilize the bubble of generation to detect the test of gas leakage in the cooling storage shed operation of this kind.
Patent documentation 1: the spy opens flat 8-303927 communique
On the other hand, because existing is that the welding position of cooling tube buries the form in foamed heat-insulating material as mentioned above in cooling storage shed, just in case do not find failure welding in the air test after welding, and found in the test before the product export afterwards that gas leakage produces refrigeration when bad, because can not repair the welding position, it is discarded completed cooling storage shed to have to.
In addition, even because find post sales that at product export gas leakage causes freezing bad, also because at present can not place under repair and have to replace product, maintenance cost be also very high.
In addition, because the external diameter than the pipe of other parts is big usually in the welding position of cooling tube, so in the aluminum of soft surface, under the situation of case, have the distortion that produces so-called cut.
Summary of the invention
Above-mentioned existing technical problem develops in order to solve in the present invention, and the cooling storage shed of problem that a kind of effective releasing produces in the welding position of cooling tube is provided.
Of the present invention cooling storage shed by being equipped with to the outside the interior case of cooling tube and the outer container and the heat insulating box that forms constitutes heat-barrier material is foam filled, wherein, in above-mentioned, form breach on the case, and dividing plate from this breach of outer side covers is installed on the case in above-mentioned, thereby the inboard at this dividing plate forms depressed part, and in this depressed part the welding position of the above-mentioned cooling tube of configuration, and cover this depressed part by inspection plate.
Second aspect present invention cooling storage shed is characterized in that, in the invention described above first aspect cooling storage shed a plurality of cooling tubes is installed in interior case, interconnects in the welding position.
Third aspect present invention cooling storage shed is characterized in that, in cooling storage shed aspect above-mentioned, loads a plurality of heat-barrier materials in depressed part.
Fourth aspect present invention cooling storage shed, it is characterized in that, in fourth aspect cooling storage shed, on dividing plate, form interconnecting part, and cover the weld part of cooling tube, the bonding sheet that prevents of the position configuration heat-barrier material that between inspection plate and cooling tube, forms by the cover that can open.
The present invention by with heat-barrier material foam filled interior case that cooling tube is installed to the outside and the outer container and the heat insulating box that forms constitutes cooling storage shed in, because the welding position of cooling tube is configured in outside the heat-barrier material, so can in production process, repeatedly check the gas leakage of the welding position of cooling tube.Thus, even can not find failure welding in the air test before heat-barrier material is foam filled, also can after test in find failure welding and place under repair outside heat-barrier material.
In addition, above-mentioned air test also can be implemented by low cost method, and also carrying out the repairing of the welding position of cooling tube under the generation refrigeration condition of poor behind the production marketing, can improve reliability thus, significantly reduce production costs and maintenance cost.
As second aspect present invention,, interconnect in the welding position if a plurality of cooling tubes are installed at interior case, case each when outside in cooling tube is installed to then, operation becomes easily, though failure welding is also checked in welding position increase simultaneously as previously mentioned easily, so do not produce obstacle.
As third aspect present invention, if case inboard and cover in the welding position of cooling tube is configured in by inspection plate, the moisture of welding position ambient air that then is arranged in the outer cooling tube of heat-barrier material is because distilled by the refrigeration of case, so can suppress to freeze to grow up, and cooling tube be brought the undesirable condition of damage.
In addition, as fourth aspect present invention, when becoming breach, interior box-shaped dividing plate from this breach of outer side covers is installed at interior case, like this, at the inboard depressed part that forms of this dividing plate, and in this depressed part the welding position of configuration cooling tube, then can significantly simplify welding position with cooling tube be configured in the case inboard structure and can reduce production costs.Can also prevent in addition the welding position give in case cause the undesirable condition of damage.
As fifth aspect present invention, if in depressed part a plurality of heat-barrier materials of configuration, the air layer in the depressed part is reduced, can effectively prevent from freezing to grow up and the problem of the cooling tube breakage that produces along with what water in air was divided.
On the other hand, as sixth aspect present invention, on dividing plate, form interconnecting part is covered cooling tube simultaneously by on limits cover weld part, the bonding sheet that prevents of the position configuration heat-barrier material that between inspection plate and cooling tube, forms, then foamed heat-insulating material is imbedded in the depressed part as far as possible and do not had air layer, can eliminate the undesirable condition that moisture freezes produces reliably.At this moment, because cover the weld part of cooling tube, open cover and can implement air test by pulling down inspection plate by on limits cover.And, under the situation of contingency discovery failure welding, also can come place under repair by foamed heat-insulating material and the cover that removes in the depressed part
Description of drawings
Fig. 1 is the front elevation as the freezer of the cooling storage shed embodiment of the present invention;
Fig. 2 is the side view of the freezer of Fig. 1;
Fig. 3 is the A-A line profile of Fig. 2;
Fig. 4 is the stereogram of interior case major part of the welding position of explanation cooling tube;
Fig. 5 is the exploded perspective view of interior case major part of cooling tube welding position of the freezer of explanation other embodiments of the invention.
The specific embodiment
Below describe the embodiment of the invention with reference to the accompanying drawings in detail.
Fig. 1 is the front elevation as the freezer 1 of a cooling storage shed embodiment of the present invention; Fig. 2 is the side view of freezer 1; Fig. 3 is the A-A line profile of Fig. 2.The freezer 1 of embodiment is the freezer of the top opening of so-called refrigerator-freezer type (チ エ ス ト Off リ one ザ), comprise: heat insulating box 6, prevents to be filled into heat-barrier material 4 formations such as (hereinafter referred to as foamed heat-insulating materials) between these two casees 2,3 with foam-in-place at its outer container 3 by the steel plate system of case 2, top also opening in the aluminum of top opening; Above-mentioned insulated door 8, but its freely openable ground sealing is formed on the top opening of the storeroom 7 in the interior case 2.
Forming device chamber, the outside 9 in the side (towards the right side) of heat insulating box 6 below, and be provided with the compressor 11 and the air blast 12 of the refrigerant loop that constitutes refrigerating plant at this.In addition, on the inner face (faces of foamed heat-insulating material 4 sides) of outer container 3, be stained with the condenser pipe 13 that constitutes described refrigerant loop, on the outside of interior case 2 (faces of foamed heat-insulating material 4 sides), be stained with cooling tube 14.Connect these compressors 11, condenser pipe 13, not shown capillary (decompressor), cooling tube 14 and not shown accumulator successively and form known refrigerant loop.
At this moment, cooling tube 14 is made of the cooling tube 14A～14D of a plurality of (among the embodiment being four) in the outside, four sides of interior week of case 2 in sticking to respectively, (represents cooling tube 14A in the figure) respectively shown in Fig. 1 dotted line, the outside of case 2 in the shape ground that crawls glues and is contained in.And each cooling tube 14A～14D is as described later, and is connected in series by welding, and, utilize welding that above-mentioned capillary is connected to the inlet of cooling tube 14A, and, the outlet of cooling tube 14D is connected with above-mentioned accumulator.In addition, in refrigerant loop, enclose the cold-producing medium of ormal weight.
During compressor 11 running, be compressed and the gas refrigerant that becomes HTHP flows into condenser pipe 13, transfer heat on the outer container 3 and heat release at this.In the process of this condenser pipe 13 of flowing through, condensation of refrigerant is liquefied, then by flowing into cooling tube 14 (cooling tube 14A) after the above-mentioned capillary-compensated.The cold-producing medium that flows into cooling tube 14 is evaporating in cooling tube 14A～14D process of flowing, absorbs heat from interior case 2, and is situated between by 7 inside, the cold storage chambers 2 of case in this.Flow through above-mentioned accumulator and be inhaled into compressor 11 from the cold-producing medium that cooling tube 14 (cooling tube 14D) flows out, circulate so repeatedly.
Next the assembling sequence of above-mentioned heat insulating box 6 is described with reference to Fig. 3, Fig. 4.Interior case 2 and profile 3 form step-like at the upper side position of canyon 9, form in the bight of the step-like portion of interior case 2 and cave in into step-like rectangular indentation 21 as shown in Figures 3 and 4.21A is in the front and back of breach 21 and the sidewall that erects of right side.
Front and back sidewall 21A, the 21A of the breach 21 of case 2 in the end, gateway of above-mentioned each cooling tube 14A～14D connects and introduce in the breach 21.In addition, the pipe C1 that draws from above-mentioned capillary introduces in the breach 21A similarly with the end of the pipe A1 that is connected to accumulator.In addition, internally the breakthrough part of case 2 seals.
Under this state, the outlet end of the outlet end of the outlet end of the end of pipe A1 and the inlet end of cooling tube 14A, cooling tube 14A and the inlet end of cooling tube 14B, cooling tube 14B and the inlet end of cooling tube 14C, cooling tube 14C and the inlet end of cooling tube 14D, the outlet end of cooling tube 14D and the arrival end portion of pipe A1 are solder-connected to together from the inboard of interior case 2 respectively.W represents each welding position (amounting to five places) among Fig. 4.
After such welding operation finishes, implement air test for the first time.At this moment, in cooling tube 14A～14D and pipe C1, A1, enclose nitrogen, on the W...... of welding position, smear suds and confirm to produce bubble.Because then can produce soap bubble just in case nitrogen leaks from welding position W, so can judge failure welding at once.When being judged as failure welding, weld this bad position again, repeat air test once more until no longer producing bubble, finish this of air test first time.
After the above-mentioned first time, air test finished, then (outer container 3 sides) covered breach 21 from the outside by dividing plate 22.The side 22B that this dividing plate 22 erects by the rectangular bottom surface 22A lower than the opening surface of breach 21, from bottom surface 22A right side edge, bend to the installed surface 22C in the outside from the upper end of this side 22B and constitute from the installed surface 22C that the left side edge of bottom surface 22A hangs down.And, by the outside of case 2 in each installed surface 22C, 22C welding or screw are fixed on, in dividing plate 22 is installed on the case 2, thereby, the dividing plate 22 inboard formation depressed parts 23 breach 21 in.
By such structure, make the end of respectively managing 14A～14D, C1, A1 be positioned at the depressed part 23 of case 2 inboards, make cooling tube 14A～14D and the welding position W...... of pipe C1, A1 be positioned at the depressed part 23 of case 2 inboards similarly simultaneously.Thus, can prevent that welding position W from producing cut on interior case 2.
Like this, after the assembling of interior case 2 finishes, in the outer container 3 of packing into, be arranged on the not shown regulation anchor clamps and between two the casees 2,3 filling-foam heat-barrier material 4.Thus, finish the assembling of heat insulating box 6.Then, carry out compressor 11 and be connected with accumulator, condenser pipe 13 and pipe arrangement capillaceous, the sealing cold-producing medium forms above-mentioned refrigerant loop.
Carry out secondary air test this moment.Also on the W...... of welding position, smear suds gas leakage this moment and confirm whether can produce bubble.Because then can produce soap bubble just in case refrigerant gas leaks from welding position W, so the time can judge failure welding.When being judged as failure welding, weld this bad position from the inboard of interior case 2 again, repeat air test once more until no longer producing bubble, finish this of air test second time.
After the above-mentioned second time, air test finished, then the thin shape moulding heat-barrier material 26 with rectangle is loaded in the depressed part 23 of respectively managing 14A～14D, C1, A1 downside, is formed with the rectangle thin type moulding heat-barrier material 27 of the groove 27A that matches with each pipe below upside is seated in.As far as possible with the roughly whole landfills in depressed part 23 (Fig. 3) of two shaping heat-barrier materials 26,27.Under this state, utilize inspection plate 28 to cover depressed part 23.This inspection plate 28 is made of the top 28A of rectangle and the side 28B that the 28A left end hangs down above this as shown in Figure 4, and in screw is fixed on removably on the case 2, with the step shape of interior case 2 coplane (Fig. 3) roughly.
Like this, finish the assembling of freezer 1 and produce refrigeration when bad in the product back that appears on the scene, can be by pulling down inspection plate 28, remove moulding heat-barrier material 26,27 and check easily, judge whether W place, its welding position leaks gas.The inspection method of this moment also situation with above-mentioned air test is identical.And, be judged as when welding position W leaks gas, with above-mentioned same, again from the inboard of interior case 2 to welding position W place under repair.
Like this, because the welding position W...... of cooling tube 14A～14D, pipe C1, A1 is configured in outside the foamed heat-insulating material 4, so can in production process, repeatedly carry out the leak test of welding position W...... such as cooling tube 14A～14D.Thus, can not find in the air test before filling-foam heat-barrier material 4 (for the first time) also can find failure welding in the test (for the second time) after it under the situation of failure welding, and, can (inboard of interior case 2) place under repair outside heat-barrier material 4.
In addition, also can implement above-mentioned air test with inexpensive method, producing behind the production marketing under the refrigeration condition of poor, also can remove moulding heat-barrier material 26,27 simultaneously, repair the welding position W of cooling tube 14A～14D, pipe C1, A1 by dismantling down inspection plate 28.Can improve the reliability of freezer 1 thus, and can significantly reduce production costs and maintenance cost.
In addition, because case 2 inboard and cover in the welding position W...... of cooling tube 14A～14D, pipe C1, A1 is configured in by inspection plate 28, so the moisture of welding position W ambient air that is arranged in the outer cooling tube 14A～14D of foamed heat-insulating material 4 etc. is because distilled by the refrigeration of case 2, freezes to grow and also can suppress to cause damage to cooling tube 14A～14D etc. so can suppress it.Particularly, among the embodiment because depressed part 23 in filling moulding heat-barrier material 26,27, so can reduce the interior air layer of depressed part 23, effectively prevent freezing to grow up and produce the undesirable condition of cooling tube 14A...... breakage with moisture in this air layer.
On case 2 in formation breach 21 also will be installed in from the dividing plate 22 of this breach 21 of outer side covers on interior case 2, inboard at this dividing plate 22 forms depressed part 23, and the welding position that in this depressed part 23, disposes cooling tube 14A～14D, pipe C1, A1, so can significantly simplify welding position W with cooling tube 14A～14D etc. be configured in the structure of case 2 inboards, and can reduce production costs.
Fig. 5 represents second embodiment of the invention.At this moment, on the 22A of the bottom surface of dividing plate 22, be formed with a plurality of through holes (interconnecting part) 31.......In addition, introducing cooling tube 14A～14D, pipe C1, A1 in the breach 21 has this welding position W... and by covering 32 it is covered respectively after welding.This covers 32 in a tubular form, and along the crooked package of side face of each pipe, the spanning length direction is formed with otch 32A in the above.Thus, cover 32 can be observed welding position W...... by opening otch 32A.
By such structure, after carrying out above-mentioned primary air test, the bonding sheet 33 that prevents of (position that forms between inspection plate 28 and the cooling tube 14A etc.) configuration heat insulating box on breach 21, make foamed heat-insulating material 4 not be bonded on the anchor clamps, under this state, interior case 2 packed in the outer container 3, be arranged in the anchor clamps and filling-foam heat-barrier material 4 between two casees 2,3.At this moment, because whole landfills that on thermal insulation board 22, are formed with through hole 31...... so foamed heat-insulating material 4 enters depressed part 23 in.And similarly cover otch 21 by inspection plate 28.
By forming such structure,, can eliminate the freezing and unfavorable condition that produces of moisture reliably with in foamed heat-insulating material 4 whole landfill depressed parts 3 and do not have air layer.At this moment, because the cover 32 of the enough openings of energy covers the weld part W of cooling tube 14A～14D, pipe C1, A1,, can carry out air test so on cover 32, open otch 32A by pulling down inspection plate 28.Find out the problem of failure welding when therefore, the refrigeration behind product export is bad.And, when contingency is found failure welding, also can weld and repair from the inboard of interior case 2 again by foamed heat-insulating material 4 and the cover of pulling down in the depressed part 23 32.
In addition, as an example freezer has been described in an embodiment, but has the invention is not restricted to this, also effective to freezer and low-temperature showcase etc.
Claims (4)
- One kind cooling storage shed, it is by being equipped with to the outside the interior case of cooling tube and the outer container and the heat insulating box that forms constitutes heat-barrier material is foam filled, it is characterized in that, in above-mentioned, form breach on the case, and dividing plate from this breach of outer side covers is installed on the case in above-mentioned, thereby the inboard at this dividing plate forms depressed part, and disposes the welding position of above-mentioned cooling tube in this depressed part, and covers this depressed part by inspection plate.
- 2. as claimed in claim 1 cooling storage shed, it is characterized in that above-mentioned cooling tube case in above-mentioned disposes a plurality of, interconnects in above-mentioned welding position.
- 3. as claim 1 or 2 each is described cooling storage shed, it is characterized in that, in above-mentioned depressed part, be filled with a plurality of heat-barrier materials.
- 4. as claim 1 or 2 each is described cooling storage shed, it is characterized in that, on aforementioned barriers, form interconnecting part and cover the weld part of above-mentioned cooling tube, the bonding sheet that prevents of configuration heat-barrier material on the position between above-mentioned inspection plate and the above-mentioned cooling tube by on limits cover.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP098872/04 | 2004-03-30 | ||
| JP2004098872A JP2005282973A (en) | 2004-03-30 | 2004-03-30 | Cooling storage cabinet |
| JP098872/2004 | 2004-03-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1677034A CN1677034A (en) | 2005-10-05 |
| CN1330914C true CN1330914C (en) | 2007-08-08 |
Family
ID=35049694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100595427A Expired - Fee Related CN1330914C (en) | 2004-03-30 | 2005-03-29 | Refrigerating storage cabinet |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2005282973A (en) |
| CN (1) | CN1330914C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105466128B (en) * | 2015-12-30 | 2019-02-15 | 青岛海尔股份有限公司 | Refrigerator |
| JP6886073B2 (en) * | 2018-03-14 | 2021-06-16 | Ｐｈｃホールディングス株式会社 | Insulation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046990U (en) * | 1989-02-07 | 1989-11-01 | 梁嘉麟 | Refrigerating case with inside-mounted condenser and evaporator |
| JPH08170868A (en) * | 1994-12-16 | 1996-07-02 | Toshiba Mach Co Ltd | Beverage cooler |
| JPH08285437A (en) * | 1995-04-13 | 1996-11-01 | Matsushita Refrig Co Ltd | Compact cooling apparatus |
| JPH08303927A (en) * | 1995-04-28 | 1996-11-22 | Sanyo Electric Co Ltd | Low temperature show case |
| CN1453535A (en) * | 2002-04-25 | 2003-11-05 | 乐金电子(天津)电器有限公司 | Evaporator of refrigerator suitable for pickles |
-
2004
- 2004-03-30 JP JP2004098872A patent/JP2005282973A/en active Pending
-
2005
- 2005-03-29 CN CNB2005100595427A patent/CN1330914C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2046990U (en) * | 1989-02-07 | 1989-11-01 | 梁嘉麟 | Refrigerating case with inside-mounted condenser and evaporator |
| JPH08170868A (en) * | 1994-12-16 | 1996-07-02 | Toshiba Mach Co Ltd | Beverage cooler |
| JPH08285437A (en) * | 1995-04-13 | 1996-11-01 | Matsushita Refrig Co Ltd | Compact cooling apparatus |
| JPH08303927A (en) * | 1995-04-28 | 1996-11-22 | Sanyo Electric Co Ltd | Low temperature show case |
| CN1453535A (en) * | 2002-04-25 | 2003-11-05 | 乐金电子(天津)电器有限公司 | Evaporator of refrigerator suitable for pickles |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1677034A (en) | 2005-10-05 |
| JP2005282973A (en) | 2005-10-13 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 |