CN1940418B

CN1940418B - Fixing structure of defrosting heater for refrigerator

Info

Publication number: CN1940418B
Application number: CN200510015219XA
Authority: CN
Inventors: 政用河
Original assignee: Taizhou LG Electronics Refrigeration Co Ltd
Current assignee: Taizhou LG Electronics Refrigeration Co Ltd
Priority date: 2005-09-27
Filing date: 2005-09-27
Publication date: 2010-06-16
Anticipated expiration: 2025-09-27
Also published as: CN1940418A

Abstract

The invention comprises a refrigerant tube mounted between a pair of fixed boards to make the refrigerant pass through, an evaporator with several cooling bolts mounted vertically in the refrigerant tube, a defrosting heater fixed in the evaporator for removing the frost formed on the surface of the evaporator, a heater fixing slot formed under the fixed boards for fixing a part of the defrosting heater and a plate-shape wiping contact part from on the periphery of the heater fixing slot to make the defrosting heater and the surface of the heater fixing slot contact each other.

Description

The fixed structure of defrosting heater for refrigerator

Technical field

The present invention relates to a kind of fixed structure of defrosting heater for refrigerator, even especially a kind of at Defrost heater because under the state that comes in contact of structure of temperature distortion and periphery, also can reduce to produce the fixed structure of the defrosting heater for refrigerator of noise because of vibrations.

Background technology

Usually, as shown in Figure 1, the kind of refrigeration cycle that is applicable to refrigerator comprises by the interconnective compressor 2 of refrigerant comb, condenser 4, capillary 6, evaporimeter 8, in the process of refrigerant by compressor 2, condenser 4, capillary 6 and evaporimeter 8, be compressed, condensation, evaporation, expansion, realize its refrigerating function.

Evaporimeter 8 be installed in freezing and freezer wall in, the air that does not circulate in refrigerating chamber and refrigerating chamber is cooled off.Compressor 2, condenser 4 and capillary 8 then are installed in the Machine Room of refrigerating chamber and refrigerating chamber one side, interconnect by refrigerant comb and evaporimeter 8.

In order to make cold air can be sent to refrigerating chamber and refrigerating chamber, with the motor that blowing fan (not marking among the figure) also is installed and is used to drive blowing fan in evaporimeter 8 position adjacent by evaporimeter 8.Comprise much the moisture that absorb from food etc. in the air of refrigerating chamber and refrigeration indoor circulation, and pass through the cyclic process of evaporimeter 8 again by the air of evaporimeter 8 coolings after refrigerating chamber and refrigeration indoor circulation, airborne moisture will increase gradually.Because moisture can form frost in the surface condensation of evaporimeter 8, so the processing that need defrost by the heat exchange action between containment evaporimeter 8 and the air.Therefore in evaporimeter one side, a kind of electronic heater that is in direct contact with it is installed, promptly Defrost heater is advisable.

The fixed structure of the defrosting heater for refrigerator of prior art as shown in Figure 2, evaporimeter 8 is for installing the refrigerant pipe 8b of meander-shaped between a pair of fixed head 8a of formation that keeps at a certain distance away, and the formation a plurality of coolings vertical with refrigerant pipe 8b fasten (not marking among the figure), and the downside two ends of Defrost heater 10 then are inserted into the below of a pair of fixed head 8a.

Wherein, both sides at a pair of fixed head 8a, form keeping at a certain distance away as shown in Figure 3 at above-below direction, can insert the oval refrigerant pipe holddown groove 8H of refrigerant pipe 8b, simultaneously below a pair of fixed head 8a, be formed for inserting the two ends, bottom of Defrost heater 10 and the heater holddown groove 8h of the rectangular shape that supports.

The lower end of Defrost heater 10 is supported by the lower end of a pair of fixed head 8a, and part in addition will be carried out the surface with the side of a pair of fixed head 8a along the lower-upper length direction and be contacted, make its can be at short notice to evaporimeter 8 processing that defrosts.

But the fixed structure of the defrosting heater for refrigerator of prior art, because the downside two ends of Defrost heater 10 are inserted into respectively among the heater holddown groove 8h that is formed at each fixed head 8a, be in the less line contact condition of contact area, therefore can or stop to generate heat and occur the phenomenon of thermal expansion and thermal contraction repeatedly along with Defrost heater 10 heatings, cause Defrost heater to carry out back and forth movement with respect to heater holddown groove 8h; And under the state that Defrost heater 10 is started working, the thermal expansion meeting makes Defrost heater 10 transition closely attached among the heater holddown groove 8h, and when vibrations produce friction, because the contact area between Defrost heater 10 and the heater holddown groove 8h is less, by having only sub-fraction can be converted to heat in the fricative energy, other major parts all can be converted to sound, produce excessive friction noise.

Summary of the invention

Technical problem to be solved by this invention is, a kind of fixed structure of defrosting heater for refrigerator is provided, and when increase is used to support the size of holddown groove of Defrost heater, increases the contact area with holddown groove, reduces the generation of its friction noise.

For the technical solution problem, the technical solution used in the present invention is: a kind of fixed structure of defrosting heater for refrigerator, be included in and keep at a certain distance away between a pair of fixed head that forms in opposite directions, the refrigerant pipe that refrigerant is passed through of being used to of meander-shaped is installed, and vertical in the refrigerant pipe evaporimeter that a plurality of coolings are fastened is installed; Be fixed in the evaporimeter Defrost heater that the frost that is formed at evaporator surface is defrosted and handles; Be formed at fixed head below, be used to insert and the fixing heater holddown groove of a Defrost heater part; In the tabular CONTACT WITH FRICTION portion that heater holddown groove periphery forms that the surface that makes Defrost heater and heater holddown groove is in contact with one another.

Described heater holddown groove is slightly larger than the diameter of Defrost heater, and the below of CONTACT WITH FRICTION portion and heater holddown groove forms as one, and is horizontal meander-shaped.

Described CONTACT WITH FRICTION portion is meander-shaped along fixed head direction in opposite directions.

The invention has the beneficial effects as follows: contact because the surface is carried out with the CONTACT WITH FRICTION portion that is formed at heater holddown groove periphery in the lower end of Defrost heater, even therefore under the state that vibrations take place, also can contact because of the surface of Defrost heater with CONTACT WITH FRICTION portion, with fricative most of power conversion is heat, reduces the generation of friction noise.

Description of drawings

Fig. 1 is the structure chart of the kind of refrigeration cycle of general refrigerator;

Fig. 2 is the profile of fixed structure of the defrosting heater for refrigerator of prior art;

Fig. 3 is the stereogram of fixed head of fixed structure of the Defrost heater of Fig. 2;

Fig. 4 is the profile of the fixed structure of defrosting heater for refrigerator of the present invention;

Fig. 5 is the stereogram of fixed head of the Defrost heater fixed structure of Fig. 4.

Among the figure

58: evaporimeter 58a: fixed head

58b: refrigerant pipe 58H: refrigerant pipe holddown groove

58h: heater holddown groove 59: CONTACT WITH FRICTION portion

60: Defrost heater

The specific embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail:

As shown in Figure 4, in the fixed structure of defrosting heater for refrigerator of the present invention, evaporimeter 58 is included in to keep at a certain distance away in opposite directions installs the refrigerant pipe 58b that refrigerant is passed through of being used to of meander-shaped between a pair of fixed head 58a that forms, and (not marking among the figure) fastened in vertically arranged a plurality of coolings in refrigerant pipe 58b, and below evaporimeter 58 Defrost heater 60 is installed.Wherein Defrost heater 60 is inserted among the heater holddown groove 58h that is formed at a pair of fixed head 58a lower end, and the downside two ends of Defrost heater 60 are carried out the surface with the tabular CONTACT WITH FRICTION portion 59 that forms in heater holddown groove 58h lower end horizontal projection and contacted.

Wherein, have only the lower end of Defrost heater 60 to be inserted into the lower end of a pair of fixed head 58a, in addition part will be carried out the surface with the side of a pair of fixed head 58a and be contacted, and make it after Defrost heater 60 is started working, can be at short notice to the processing that defrosts of evaporimeter 58 integral body.

A pair of fixed head 58a is fixed Defrost heater 60 when evaporimeter 58 integral body are supported; And form at the both ends of a pair of fixed head 58a as shown in Figure 5, keep at a certain distance away, be used to insert and the fixing oval-shaped refrigerant pipe holddown groove 58H at the two ends of refrigerant pipe 58b along above-below direction; And, be formed for inserting the heater holddown groove 58h of rectangular shape at the downside two ends of defrosting heating 60 in the lower end of a pair of fixed head 58a.

The caused thermal deformation phenomenon of heat that produces when considering Defrost heater 60 work, the diameter that makes heater holddown groove 58h be slightly larger than Defrost heater 60 is advisable.Simultaneously, CONTACT WITH FRICTION portion 59 forms as one with the below of heater holddown groove 58h, and is cut open and makes under the interconnective state in its lower end in the downside part of a pair of fixed head 58a, and the upper end of CONTACT WITH FRICTION portion 59 is meander-shaped in the horizontal direction.

Because CONTACT WITH FRICTION portion 59 forms along a pair of fixed head 58a direction in opposite directions is tortuous, therefore can not be embodied in the face shaping, thus the size of minimizing evaporimeter 58 integral body.

Below, to the frost on evaporimeter 58 surfaces of structure as mentioned above, the process of handling that obtains defrosting when Defrost heater 60 work describes.

At first, be formed at the frost on evaporimeter 58 surfaces by the detections such as (not marking among the figure) of all temps sensor, Defrost heater 60 will be started working and generate heat this moment, and was delivered to the processing that defrosts of the lower end of evaporimeter 58 and two ends by the heat that will send.

In aforesaid defrosting processing procedure, even Defrost heater 60 the thermal expansion phenomenon occurs because of the generation of heat, because the downside two ends of Defrost heater 60 are inserted among the heater holddown groove 58h with a fixed gap, therefore guaranteed sufficient thermal expansion space, guarantee that other parts beyond the lower end can not contact with heater holddown groove 58h, and make the lower end of Defrost heater 60 carry out the surface to contact with CONTACT WITH FRICTION portion 59.

At this moment, even because the reasons such as work of external impact, compressor produce some vibrations and are passed to evaporimeter 58, also can rub being under the surperficial contact condition because of the lower end of Defrost heater 60 with CONTACT WITH FRICTION portion 59, make by fricative energy major part and can be converted to heat energy, only produce less friction noise.

Along with the heating of Defrost heater 60 with stop to generate heat and occur the phenomenon of thermal expansion and thermal contraction repeatedly, cause Defrost heater 60 to carry out back and forth movement with respect to heater holddown groove 58h, also can rub being under the surperficial state of contact, obtain identical effect because of Defrost heater 60 with CONTACT WITH FRICTION portion 59.

The present invention is not limited to above-mentioned example and accompanying drawing, under the prerequisite that does not break away from claim, can carry out multiple variation, is as the criterion with the claim scope.

Claims

1. the fixed structure of a defrosting heater for refrigerator, be included in and keep at a certain distance away between a pair of fixed head (58a) that forms in opposite directions, the refrigerant pipe (58b) that refrigerant is passed through of being used to of meander-shaped is installed, and vertical in refrigerant pipe (58b) evaporimeter (58) that a plurality of coolings are fastened is installed; Be fixed in the evaporimeter (58) Defrost heater (60) that the frost that is formed at evaporator surface is defrosted and handles; Be formed at fixed head (58a) below, be used for inserting and the fixing heater holddown groove (58h) of Defrost heater (a 60) part; It is characterized in that: in the tabular CONTACT WITH FRICTION portion (59) that the formation of heater holddown groove (58h) periphery is in contact with one another the surface of Defrost heater (60) and heater holddown groove (58h), heater holddown groove (58h) is slightly larger than the diameter of Defrost heater (60).

2. the fixed structure of defrosting heater for refrigerator according to claim 1 is characterized in that the described CONTACT WITH FRICTION portion (59) and the below of heater holddown groove (58h) form as one, and are horizontal meander-shaped.

3. the fixed structure of defrosting heater for refrigerator according to claim 1 and 2 is characterized in that described CONTACT WITH FRICTION portion (59) along fixed head (58a) direction in opposite directions, is meander-shaped.