JP2556193Y2 - Defroster for refrigerator - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention comprises a glass tube heater, a cover for covering the upper portion of the glass tube heater, and a dew tray disposed below the glass tube heater, and is disposed below the evaporator. The present invention relates to a refrigerator defroster.

[0002]

2. Description of the Related Art Conventionally, in such a defrosting apparatus, a glass tube heater is attached to a fixture provided on a dew tray via a holder.

[0003]

SUMMARY OF THE INVENTION In the above-mentioned conventional apparatus,
When mounting the glass tube heater on the dew tray, a fixture and a holder were required, and the number of parts was increased. Moreover, when the glass tube heater is attached to the dew tray, the glass tube heater is located above the dew tray,
Since the side surface of the glass tube heater is exposed to the outside, the radiant heat from the glass tube heater is directly radiated to the inner surface of the case housing the evaporator, so that the radiant heat on the inner surface of the case cannot be avoided.

The present invention has been made in view of the above circumstances, and has been made to reduce the number of parts and to prevent radiant heat from a glass tube heater from being directly radiated to the inner surface of a case. The purpose is to provide.

[0005]

In order to achieve the above-mentioned object, the present invention is directed to an upside-down surface provided on both end walls of a dew tray.
Notch, and provided at both ends of the glass tube heater
Into the dew tray by fitting the first annular groove.
The first annular groove is displaced and supported, and
The second annular grooves provided at both ends of the
When the notches provided on both end walls are fitted,
In both cases, the top surface of the cover was brought into contact with the evaporator.
And features.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 3 show one embodiment of the present invention. FIG. 1 is a partial longitudinal sectional side view of a refrigerator, and is a sectional view taken along line 1-1 in FIG. 2, and FIG. 1 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is an exploded perspective view of a main part.

First, in FIGS. 1 and 2, the refrigerator body 3 includes an outer case 3a and an inner case 3b.
A heat insulating material 3c is provided therebetween and is formed in a rectangular box shape whose front side (left side in FIG. 1) is open, and the front opening of the housing 3 is closed by a door (not shown) so as to be openable and closable. A refrigerator compartment 4 is formed in the storage body 3, and inside the refrigerator compartment 4,
A rectangular separator 6 which forms a cooling chamber 5 between the inner case 3b and the rear part thereof is provided between the upper end thereof and the inner case 3b.
b, and is fixed to the inner case 3b so as to form a flow gap 7 therebetween.

On the other hand, a storage chamber 8 having an open rear side is formed behind the storage body 3, and a condenser 9, a compressor, a strainer, a capillary tube and the like (not shown) are stored in the storage chamber 8. Is done.

Referring also to FIG. 3, inside the cooling chamber 5,
An evaporator 15 configured by attaching a large number of fins 14 to a pipe body 13 bent a plurality of times is housed and arranged so as to be fixed to the separator 6. Thus, both ends of the tube 13 penetrate through the housing 3 and are connected to the compressor and the condenser 9 in the storage chamber 8 respectively. In addition, a suction port (not shown) for sucking the air in the refrigeration chamber 4 toward the cooling chamber 5 is provided in a portion of the separator 6 corresponding to the evaporator 15.

Meanwhile, in the cooling chamber 5, a support member 18 fixed above the separator 6 is provided with the air sucked into the cooling chamber 5 from the suction port of the separator 6 and flowing through the evaporator 15. A blower 21 for blowing out from the circulation gap 7 above the inside of the refrigerator 6 into the refrigerator compartment 4 is fixedly supported. Thus, the air cooled while flowing upward through the evaporator 15 is blown into the refrigerator compartment 4.

A defrosting device 22 according to the present invention is disposed in the cooling chamber 5 below the evaporator 15. The defrosting device 22 is provided with a glass tube heater 2.
3, a cover 24 covering the upper part of the glass tube heater 23,
And a dew tray 25 disposed below the glass tube heater 23.

The glass tube heater 23 is formed by closing both ends of a cylindrical glass tube 26 having a built-in electric heater (not shown) with holders 27 having a circular cross-sectional outer surface. Leads connected to the electric heater are provided. Lines 28, 28 extend outwardly from both holders 27, 27. In addition, the outer surfaces of both holders 27, 27 have the first
An annular groove 29 and a second annular groove 30 located inward in the axial direction are provided.

The exposure tray 25 is made of a heat-resistant material such as metal and is formed in a box shape opened upward, and a pair of side plate portions 25a opposed to the lower portion of the separator 6 and the lower portion of the inner case 3b, respectively. , 25a,
End plate portions 25b, 25b connecting both ends of both side plate portions 25a, 25a, and side plate portions 25a, 25a and end plate portion 2 so as to become narrower downward.
A bottom plate portion 25c connected to the lower end portions of the bottom plates 5b and 25b, and a drain pipe portion 25d connected to the lower end of the bottom plate portion 25c are provided fixedly at a lower portion in the cooling chamber 5.

Both end plate portions 25 of the exposure tray 25
b, and the upper portion of 25b, fitting the first annular groove 29, 29 of the two holders 27, 27 in a glass tube heater 23, an upward notch 31, 31 for supporting provided.
In addition, the depth of both notches 31, 31 is the first annular groove 29,
It is set so that the glass tube heater 23 is housed in the dew tray 25 when the fitting 29 is fitted.

The cover 24 is made of a metal material such as an aluminum alloy.
, And support plate portions 24b, 2 which respectively hang down from both ends of the top plate portion 24a.
4b, and side plate portions 24c, 24c hanging downward from both side edges of the top plate portion 24a.

Both support plate portions 24 of the cover 24
In the lower portions of b, 24b, the holders 27, 27 of the glass tube heater 23 are formed so as to be shifted from the first annular grooves 29, 29.
The second annular groove 30, 30 fitted, downstream for supporting the
Notches 32, 32 are provided. Therefore, the cover 24 is supported by the glass tube heater 23 by fitting the notches 32, 32 into the second annular grooves 30, 30. Moreover, the upper surface of the top plate 24a is brought into contact with the lower end of the evaporator 15.

At the bottom of the cooling chamber 5, a connecting pipe 34 having a fitting part 34 a at the upper end into which the drain pipe part 25 d of the exposure tray 25 is fitted protrudes into the lower part of the storage chamber 8. The connecting pipe 34 is fixedly provided as described above.
It is opened on a drain tray 35 arranged at the lower part in the storage room 8.

Next, the operation of this embodiment will be described.
When the glass tube heater 23 is energized, the cover 24 is heated by radiant heat from the glass tube heater 23, and the evaporator 15 is heated by heat conduction from the cover 24, thereby melting and removing frost attached to the evaporator 15. It is possible to do. The water drops generated by the defrost fall into the dew tray 25, and are drained from the drain pipe 25d to the drain tray 35 via the connecting pipe 34. At this time, since the glass tube heater 23 is covered with the cover 24, water drops falling from the evaporator 15 do not contact the glass tube heater 23.

In such a defrosting device 22, the glass tube heater 23 is fitted and supported at both ends thereof at both ends of a dew tray 25, and is fixedly supported by the dew tray 25. Since both ends are fitted to both ends of the glass tube heater 23 and fixedly supported by the glass tube heater 23, a dedicated component for supporting the glass tube heater with the dew tray is unnecessary, and the number of parts is reduced. Thus, the defrosting device 22 can be configured.

Further, the glass tube heater 23 is provided with a dew tray 25.
The radiant heat from the glass tube heater 23 is not directly radiated toward the separator 6 and the inner case 3b.
In addition, damage to the inner case 3b can be avoided as much as possible.

[0022]

[Effect of the Invention] As described above, according to the present invention, the dew tray
Insert the glass tube into the notch on each end
First annular grooves respectively provided at both ends of the heater are fitted.
The heater is housed in a dew tray and supported, and the first annular
Set at both ends of the glass tube heater,
In the second annular groove, the lower end provided on each end wall of the cover is provided.
Orientation notches and fit the top of the cover
Since it is in contact with the evaporator,
When notches, Gala between-out downward cutout of the cover at both ends
Sandwich both ends of the pipe heater from above and below,
Just touch the porator and stop the rotation.
Data and cover in the set position very easily and securely.
You can actually fix it, and special parts for fixing
Since the number of parts of the defroster is reduced as unnecessary, cost reduction is achieved.
Can contribute to reduction and improvement of maintenance workability.
You. Moreover, at both ends of the glass tube heater,
A first annular groove for notch fitting, and a first annular groove for notch fitting of the cover.
By forming the second annular groove to be shifted from each other,
The upper and lower notches do not interfere with each other
It can be performed accurately. Further glass tube heater
Is stored in the dew tray in the set state, so that radiant heat from the heater can be prevented from being directly radiated to the member housing the evaporator, thereby preventing damage to the member. .

[Brief description of the drawings]

FIG. 1 is a partial longitudinal sectional side view of a refrigerator, and FIG.
It is sectional drawing which follows a line.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is an exploded perspective view of a main part.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 15 Evaporator 22 Defroster 23 Glass tube heater 24 Cover 25 Dew tray 29 First annular groove 30 Second annular groove 31 Upward cutout 32 Downward cutout

Claims (1)

(57) [Scope of request for utility model registration] The apparatus has a glass tube heater (23), a cover (24) covering the upper part of the glass tube heater (23), and a dew tray (25) arranged below the glass tube heater (23). In the defrosting device for a refrigerator disposed below the evaporator (15), the defrosting device (25) is provided with an upward facing
Notch (31), both ends of glass tube heater (23)
The first annular grooves (29) provided in the
The heater (23) is housed and supported in the dew tray (25), and is shifted with respect to the first annular groove (29).
Second annular grooves (30) provided at both ends of (23), respectively.
Downwardly provided on both end walls of the cover (24).
The notch (32) is fitted and its cover
The upper surface of (24) is brought into contact with the evaporator (15).
A defrosting device for a refrigerator.