CN100398963C - Sealing structure for bushing heater of refrigerator - Google Patents
Sealing structure for bushing heater of refrigerator Download PDFInfo
- Publication number
- CN100398963C CN100398963C CNB2004100191147A CN200410019114A CN100398963C CN 100398963 C CN100398963 C CN 100398963C CN B2004100191147 A CNB2004100191147 A CN B2004100191147A CN 200410019114 A CN200410019114 A CN 200410019114A CN 100398963 C CN100398963 C CN 100398963C
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- sealing
- pipe heater
- double pipe
- insulating
- refrigerator
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Abstract
The present invention relates to a sealing structure for a refrigerator sleeve pipe heater, which comprises a heating part, a sealing flange, insulating material, an insulating cap, an insulating protective cover and a sealing layer, wherein the heating part is formed in a way that magnesium oxide is filled in an outer pipe of an electric heating wire; the sealing flange is arranged on the end part of the outer pipe, and can seal the outer pipe, and the sealing flange is provided with a through hole through which a wire lead needle which is connected to the electric heating wire can penetrate; the insulating material is filled between the end part of the wire lead needle which penetrates through the through hole and the sealing flange, the insulating cap is arranged on the outer surface of the insulating material, the insulating protective cover is arranged outside the insulating cap, and the sealing layer is formed between the insulating cap and the insulating protective cover. The sealing structure for a refrigerator sleeve pipe heater provided by the present invention can make the sleeve pipe heater kept in a sealing state under the condition of high temperature, so water can be prevented from permeating into the sleeve pipe heater. In addition, triple waterproof processing is carried out for the sleeve pipe heater by the insulating cap, the insulation protection cover and the sealing layer between the insulating cap and the insulating protective cover, and the water can be effectively prevented from permeating into the outer pipe.
Description
Technical field
The present invention relates to a kind of refrigerator, particularly relate to a kind of hermetically-sealed construction that can prevent the refrigerator double pipe heater that moisture soaks under the high temperature.
Background technology
For frosting on the device that avoids evaporating, defrosting heater is set in refrigerator usually.Defrosting heater adopts double pipe heater usually.The structure of double pipe heater is that heater wire is set in metal sleeve, and fills insulation magnesia between metal sleeve and heater wire.Fig. 1 is the refrigerator double pipe heater vertical structure cutaway view of prior art.Fig. 2 is the double pipe heater hermetically-sealed construction enlarged drawing of Fig. 1.As shown in Figure 1 and Figure 2, the outer tube 12 of the double pipe heater 10 of this prior art is to make with metal material, and its inside is provided with coil shape heating wire 14 and the suture introducing needle 16 that is connected with heating wire 14.For in outer tube 12, having filled with magnesia 18 insulate between outer tube 12 and heating wire 14 and outer tube 12 and the suture introducing needle 16.The outboard end of suture introducing needle 16 is connected with an end of contact terminal 24, and the other end of contact terminal 24 then is connected on the lead-in wire 22 that is connected with external power source, thereby can with suture introducing needle 16 heating wire 14 be connected with power supply by contact terminal 24.The inner magnesia 18 of filling in outer tube 12 both ends is removed, and the removal degree of depth is D.After removing magnesia 18, inject the epoxy resin insulation material 32 that is used to insulate by certain depth D1 at the both ends of outer tube 12 earlier.After epoxy resin insulation material 32 sclerosis, can prevent that the inside of double pipe heater 10 from occurring moist.Suture introducing needle 16 is inserted in the insulation sleeve 36 of silicon rubber material.Insulation sleeve 36 can be guaranteed extended distance L, keeps state of insulation thereby make between suture introducing needle 16 and the outer tube 12.Correspond to the upper end of epoxy resin insulation material 32 in the outer tube 12, inlaying insulator cap 34 with certain depth D2.Insulator cap 34 usefulness silastic materials are made.After insulator cap 34 is inlayed in the end of outer tube 12, can prevent that also the inside of double pipe heater 10 from occurring moist.The contact site outside of suture introducing needle 16 and contact terminal 24 is with heat-shrinkable T bush 38.Heat-shrinkable T bush 38 inboards scribble molten stick 39.Heat-shrinkable T bush 38 is heated to uniform temperature, and it will produce to shrink also and tightly be enclosed within on the contact site of suture introducing needle 16 and contact terminal 24.Molten stick 39 has be fused into bonding agent when uniform temperature is above, and temperature drops to certain value and produces the characteristic of solidifying when foretelling, thereby can be bonded on the contact site.Therefore the molten stick 39 after heat-shrinkable T bush 38 shrinks under the molten state will produce and solidify, thereby will go between 22, the lateral surface and the heat-shrinkable T bush 38 of contact terminal 24, insulator cap 34, insulating sleeve 36, outer tube 12 bond together, and finally finishes the sealing of double pipe heater 10.But there are the following problems to have the refrigerator of said structure, and promptly the hermetically-sealed construction of this double pipe heater is to utilize heat-shrinkable T bush 38 to carry out the final sealing of double pipe heater 10.If but in the instantaneous heat hydrophone, used above-mentioned double pipe heater 10, when heating wire 14 reached a high temperature state, the molten stick 39 of bonding heat-shrinkable T bush 38 just might produce fusing.In case molten stick 39 produces fusing, then heat-shrinkable T bush 38 will be transformed into released state from original adhering state, thereby destroys the sealing state of double pipe heater 10.And when using for a long time, charing also can take place in heat-shrinkable T bush 38, thereby also might destroy the sealing state of double pipe heater 10.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of can the use and the hermetically-sealed construction of the refrigerator double pipe heater of waterproof effectively in the condition of high temperature.
In order to achieve the above object, the hermetically-sealed construction of refrigerator double pipe heater provided by the invention comprises: comprising: the heating portion that forms by fill magnesia in being provided with the outer tube of heating wire; The sealing flange that seals up the end of outer tube 72, forms by insertion section, flange part and sealing, can insert the end of outer tube in the insertion section, flange part is formed at the upper end of insertion section, it has to make and is connected a through hole that the suture introducing needle on the heating wire runs through and a side that is connected refrigerator, and sealing is formed at the end face of flange part; Be arranged on the outer peripheral face of suture introducing needle and the insulating materials between the sealing; Be arranged on the insulating materials outer end, cover the insulator cap of insulating materials; Be arranged on the insulation protection cover of insulator cap and sealing outer end and be formed at insulator cap and sealing between sealant.
Described insulator cap and insulation protection cover are made by silastic material, and insulating materials and sealant are to form with epoxy resin.
The hermetically-sealed construction of refrigerator double pipe heater provided by the invention can make double pipe heater be in high-temperature condition following time also can keep sealing state, thereby can prevent that moisture is impregnated into double pipe heater inside.In addition, utilize insulator cap, insulation protection cover and sealant between the two that double pipe heater is carried out triple water-proofing treatment, can prevent more effectively that moisture is impregnated into the inside of outer tube.
Description of drawings
Be elaborated below in conjunction with the hermetically-sealed construction of the drawings and specific embodiments to refrigerator double pipe heater of the present invention.
Fig. 1 is the refrigerator double pipe heater vertical structure cutaway view of prior art.
Fig. 2 is the double pipe heater hermetically-sealed construction enlarged drawing of Fig. 1.
Fig. 3 is for adopting the refrigerator schematic diagram of double pipe heater hermetically-sealed construction provided by the invention.
Fig. 4 is the instantaneous heat hydrophone exploded perspective view among Fig. 3.
Fig. 5 is the instantaneous heat hydrophone vertical structure cutaway view among Fig. 3.
Fig. 6 is the double pipe heater hermetically-sealed construction enlarged drawing among Fig. 3.
The specific embodiment
To shown in Figure 6, refrigerator provided by the invention is provided with the door 52 that can open and close refrigerator body 50 inner spaces as Fig. 3.The front of door 52 is provided with distributor 58.Distributor 58 is arranged on door 52 the lateral surface 54 and inside recessed position, and it can be used for door 52 and is in and takes out water and ice cube under the closed condition.Lateral surface 54 can form the front of door 52.The inside of door 52 promptly, is provided with instantaneous heat hydrophone 60 between the door lining 56 of lateral surface 54 and formation door 52 medial surfaces.The outside of instantaneous heat hydrophone 60 is provided with outer cover of water heater 62.The inside of outer cover of water heater 62 is equipped with warm water jar 66.The inside of warm water jar 66 is formed with the storage space of certain stored water.Feed pipe 69 and double pipe heater 70 are arranged on the inside of warm water jar 66, promptly are immersed in the water.When outwards supplying water, water in the internal flow of feed pipe 69, and it forms with the medial surface of coil shape along warm water jar 66.The two ends of feed pipe 69 are connected with the supply equipment of the water source of outside and not shown distributor 58 respectively.Double pipe heater 70 can heat the water in warm water jar 66 storage spaces, and adds the water that flows in the hot water supplying pipe 69 with this.Feed pipe 69 is centered around the outside of double pipe heater 70.Amass in order to strengthen with warm water jar 66 interior contacting of water, double pipe heater 70 has the serpentine shaped by the certain-length bending.Water heater cover 64 and warm water jar cover 68 can cover on respectively on outer cover of water heater 62 and the warm water jar 66, to close corresponding inner space.Be formed with screw hole 64a respectively on water heater cover 64 and the warm water jar cover 68,68a, screw hole 64a, the medial surface of 68a is formed with threaded portion 64b, 68b respectively. Screw hole 64a, 68a can be run through in the two ends of feed pipe 69 and double pipe heater 70.86 of sealing flanges can with threaded portion 64b, 68b combines.For protection against the tide, need carry out encapsulation process to the two ends of double pipe heater 70.Shown in Fig. 5,6, the outer tube 72 of double pipe heater 70 provided by the invention is to make with metal.The inside of outer tube 72 is provided with coiled type heating wire 74 and the suture introducing needle 76 that is connected with heating wire 74.The inside of outer tube 72 is filled with Powdered magnesia 78, and it can make between outer tube 72 and heating wire 74 and the suture introducing needle 76 and be in state of insulation.The outboard end of suture introducing needle 76 is connected with an end of contact terminal 84.Contact terminal 84 is used to connect the power supply of heating wire 74, and the one end is connected with suture introducing needle 76, and the other end then is connected on the lead-in wire 82, and lead-in wire 82 is connected again on the not shown power supply.Be respectively equipped with sealing flange 86 on the two ends of outer tube 72, to close the end of outer tube 72.Sealing flange 86 is made up of insertion section 87, the sealing 89 that is formed on the flange part 88 of 87 upper ends, insertion section and is formed on flange part 88 end faces.The internal diameter size of insertion section 87 is identical with the outside dimension of outer tube 72.Flange part 88 centres that are formed on 87 upper ends, insertion section are formed with through hole 88a.The internal diameter of through hole 88a has identical size with the diameter of suture introducing needle 76.Can insert the end of outer tube 72 in the insertion section 87.Suture introducing needle 76 can run through through hole 88a and extend to the top of flange part 88, promptly in the sealing 89.Be formed with threaded portion 89a on the outer circumference surface of sealing 89.Threaded portion 89a is used for sealing flange 86 is assembled in water heater cover 64 (see figure 4)s and warm water jar cover 68.That is, threaded portion 89a can be combined in water heater cover 64 and the warm water jar covers 68 screw hole 64a, and the threaded portion 64b in the 68a on the 68b, thereby is fixed on sealing flange 86 on the water heater cover 64.After running through through hole 88a, the end of suture introducing needle 76 is positioned at the inside of sealing 89.At this moment, the length of suture introducing needle 76 is greater than the height of sealing 89, and is filled with epoxy resin insulation material 92 in the sealing 89.Epoxy resin insulation material 92 is arranged between sealing flange 86 and the suture introducing needle 76, so that the outside of double pipe heater 70 is in state of insulation.Can form secondary seal in the inside of sealing flange 86 after epoxy resin insulation material 92 sclerosis.The outside of epoxy resin insulation material 92 is provided with insulator cap 94.But insulator cap 94 reinforced epoxy insulating materials 92, the outer end of insulator cap 94 and sealing 89 is provided with insulation protection cover 96.Inject between insulator cap 94 and the sealing 89 and be formed with epoxy sealing layer 98.In addition, insulator cap 94 and insulation protection cover 96 can be made by the injection moulding mode with silastic material.Double pipe heater of the present invention is described to Fig. 6 below in conjunction with Fig. 3.At first, by go between 82 and contact terminal 84 connect power supply so that heating wires 74 heatings in double pipe heater 70 upper exterior tubes 72.Double pipe heater 70 adstante febres can heat the water in the warm water jar 66.Water by double pipe heater 70 heating can be to the conduction of the water in the feed pipe 69 heat, so that the water rising temperature in the feed pipe 69 outwards flows out by distributor 58 then.The two ends of double pipe heater 70 can be sealed under sealing flange fixing on the water heater cover 64 of instantaneous heat hydrophone 60 86 effects.After can epoxy resin insulation material 92 sclerosis to 89 insulating effects of sealing of sealing flange 86, sealing flange 86 will more firmly seal up double pipe heater 70.Successively at the arranged outside insulator cap 94 and the insulation protection cover 96 of epoxy resin insulation material 92, and populated epoxy sealing layer 98 just can form final moisture-proof construction.This hermetically-sealed construction can prevent that moisture is impregnated into the inside of double pipe heater 70.Among the present invention be with can resistant to elevated temperatures epoxy resin insulation material 92, insulator cap 94, insulation protection cover 96 and epoxy sealing layer 98 substitute the molten stick 39 that is used for the Sealed casing pipe heater under the conventional art; sealing state that also can maintainance set pipe heater 70 when therefore, high temperature occurring in the inside of instantaneous heat hydrophone 60.Embodiments of the invention only are illustrated the hermetically-sealed construction of the double pipe heater that is arranged on instantaneous heat hydrophone inside.But hermetically-sealed construction provided by the invention is not only applicable to double pipe heater, and goes for being arranged in any double pipe heater at other position of refrigerator, particularly in the workpiece under the condition of high temperature.In addition, in an embodiment of the present invention, the material of insulator cap and insulation protection cover is a silicon rubber, and the material of insulating materials and sealant is an epoxy resin.But above-mentioned material can adopt other material, as long as it has high temperature resistant character and good insulation performance.
Claims (2)
1. the hermetically-sealed construction of a refrigerator double pipe heater is characterized in that comprising: the heating portion that forms by fill magnesia (78) in the outer tube that is provided with heating wire (74) (72); The sealing flange (86) that seals up the end of outer tube (72), forms by insertion section (87), flange part (88) and sealing (89), can insert the end of outer tube (72) in the insertion section (87), flange part (88) is formed at the upper end of insertion section (87), it has can make a through hole (88a) that the suture introducing needle (76) that is connected on the heating wire (74) runs through and a side that is connected refrigerator, and sealing (89) is formed at the end face of flange part (88); Be arranged on the outer peripheral face of suture introducing needle (76) and the insulating materials (92) between the sealing (89); Be arranged on insulating materials (92) outer end, cover the insulator cap (94) of insulating materials (92); Be arranged on the insulation protection cover (96) of insulator cap (94) and sealing (89) outer end and be formed at insulator cap (94) and sealing (89) between sealant (98).
2. the hermetically-sealed construction of refrigerator double pipe heater according to claim 1 is characterized in that: described insulator cap (94) and insulation protection cover (96) are made by silastic material, and insulating materials (92) and sealant (98) are to form with epoxy resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100191147A CN100398963C (en) | 2004-04-30 | 2004-04-30 | Sealing structure for bushing heater of refrigerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100191147A CN100398963C (en) | 2004-04-30 | 2004-04-30 | Sealing structure for bushing heater of refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1690626A CN1690626A (en) | 2005-11-02 |
| CN100398963C true CN100398963C (en) | 2008-07-02 |
Family
ID=35346248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100191147A Expired - Fee Related CN100398963C (en) | 2004-04-30 | 2004-04-30 | Sealing structure for bushing heater of refrigerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100398963C (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041072U (en) * | 1988-10-29 | 1989-07-12 | 上海市农业机械研究所 | Enclosed joint for connecting heating wire to power wire |
| DE4235727A1 (en) * | 1992-10-23 | 1994-04-28 | Licentia Gmbh | Waterproof termination for electrical tube heater - has heat resistant insulating body around terminal, pressing against internal seal and crimped by outer tube |
| CN2208305Y (en) * | 1994-01-25 | 1995-09-20 | 袁惠汀 | Terminal sealer of electric heater |
| EP0756439A1 (en) * | 1995-07-26 | 1997-01-29 | Seb S.A. | Heating element and method for sealing such an element |
| JPH09113102A (en) * | 1995-10-20 | 1997-05-02 | Matsushita Refrig Co Ltd | Defroster for refrigerator |
| CN2356456Y (en) * | 1998-12-10 | 1999-12-29 | 莱西市电热电器厂 | Improved tubular electrothermal element |
| CN1475739A (en) * | 2002-08-13 | 2004-02-18 | 乐金电子(天津)电器有限公司 | Defrost heater of electric refrigerator |
| CN1475738A (en) * | 2002-08-13 | 2004-02-18 | 乐金电子(天津)电器有限公司 | Defrost heater of electric refrigerator |
-
2004
- 2004-04-30 CN CNB2004100191147A patent/CN100398963C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2041072U (en) * | 1988-10-29 | 1989-07-12 | 上海市农业机械研究所 | Enclosed joint for connecting heating wire to power wire |
| DE4235727A1 (en) * | 1992-10-23 | 1994-04-28 | Licentia Gmbh | Waterproof termination for electrical tube heater - has heat resistant insulating body around terminal, pressing against internal seal and crimped by outer tube |
| CN2208305Y (en) * | 1994-01-25 | 1995-09-20 | 袁惠汀 | Terminal sealer of electric heater |
| EP0756439A1 (en) * | 1995-07-26 | 1997-01-29 | Seb S.A. | Heating element and method for sealing such an element |
| JPH09113102A (en) * | 1995-10-20 | 1997-05-02 | Matsushita Refrig Co Ltd | Defroster for refrigerator |
| CN2356456Y (en) * | 1998-12-10 | 1999-12-29 | 莱西市电热电器厂 | Improved tubular electrothermal element |
| CN1475739A (en) * | 2002-08-13 | 2004-02-18 | 乐金电子(天津)电器有限公司 | Defrost heater of electric refrigerator |
| CN1475738A (en) * | 2002-08-13 | 2004-02-18 | 乐金电子(天津)电器有限公司 | Defrost heater of electric refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1690626A (en) | 2005-11-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080702 |