JPH0554979U - Defroster for refrigerator - Google Patents

Abstract

(57) [Abstract] [Purpose] For a refrigerator having a glass tube heater, a cover covering the upper side of the glass tube heater, and a dew tray provided below the glass tube heater, and being provided below the evaporator. In the defrosting device, while reducing the number of parts,
Radiant heat from the glass tube heater is prevented from being directly radiated to the member that houses the evaporator. [Structure] A glass tube heater 23 is housed in the dew tray 25 with both ends thereof fitted and supported by a dew tray 25, and a cover 24 having its upper surface in contact with the evaporator 15 is attached to both ends of the glass heater 23. Fitted and supported.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a refrigerator defroster having a glass tube heater, a cover that covers the glass tube heater from above, and a dew tray that is located below the glass tube heater, and that is located below the evaporator.

[0002]

[Prior Art]

 Conventionally, in such a defrosting device, a glass tube heater is attached to a fixture provided on a dew tray via a holder.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional device, a fixture and a holder are required to attach the glass tube heater to the dew tray, and the number of parts is large. Moreover, when the glass tube heater is attached to the dew pan, the glass tube heater is located above the dew pan and the side surface of the glass tube heater is exposed to the outside, so the radiant heat from the glass tube heater Radiation was directly radiated to the inner surface of the case housing the evaporator, and damage to the inner surface of the case due to radiant heat was unavoidable.

The present invention has been made in view of the above circumstances, and it is possible to reduce the number of parts and yet prevent the radiant heat from the glass tube heater from directly radiating to the inner surface of the refrigerator. It is intended to provide a frost device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, according to the present invention, the glass tube heater is housed in the dew tray with both ends thereof fitted and supported in the dew tray, and the cover whose upper surface is in contact with the evaporator is made of glass. Fitted and supported on both ends of the tube heater.

[0006]

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention. FIG. 1 is a partially longitudinal side view of a refrigerator, which is a sectional view taken along line 1-1 of FIG. 2, and FIG. 2 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, referring to FIGS. 1 and 2, a refrigerator case 3 has a rectangular box-like shape with an open front side (left side in FIG. 1) provided with a heat insulating material 3c between an outer case 3a and an inner case 3b. And the front opening of the housing 3 is opened and closed by a door (not shown). A refrigerating chamber 4 is formed in the case 3, and a rectangular separator 6 forming a cooling chamber 5 between the refrigerating chamber 4 and the rear portion of the inner case 3b is provided in the refrigerating chamber 4 at its upper end and the inner case. It is fixed to the inner case 3b so as to form a flow gap 7 with the inner case 3b.

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

Referring also to FIG. 3, in the cooling chamber 5, an evaporator 15 configured by attaching a large number of fins 14 to a tubular body 13 that is bent a plurality of times is fixed to the separator 6. It is stored and arranged. Thus, both ends of the pipe body 13 penetrate the housing body 3 and are connected to the compressor and the condenser 9 in the storage chamber 8, respectively. Moreover, a suction port (not shown) for sucking the air in the refrigerating chamber 4 to the cooling chamber 5 side is provided at a portion of the separator 6 corresponding to the evaporator 15.

By the way, in the cooling chamber 5, the support member 18 fixed to the upper portion of the separator 6 is provided with the air that has been sucked into the cooling chamber 5 through the suction port of the separator 6 and passed through the evaporator 15. A blower 21 for blowing out into the refrigerating chamber 4 from the circulation gap 7 above the separator 6 is fixedly supported. As a result, the air cooled while passing through the evaporator 15 upward is blown into the refrigerating chamber 4.

A defrosting device 22 according to the present invention is disposed below the evaporator 15 in the cooling chamber 5, and the defrosting device 22 includes a glass tube heater 23 and a glass tube heater. A cover 24 that covers the upper part of the glass tube 23 and a dew tray 25 that is arranged below the glass tube heater 23 are provided.

The glass tube heater 23 is composed of a cylindrical glass tube 26 containing an electrothermal heater (not shown), and both ends thereof are closed by holders 27, 27 having an outer surface having a circular cross section. The glass tube heater 23 is connected to the electrothermal heater. Lead wires 28, 28 extend outward from both holders 27, 27. Moreover, the outer surfaces of both holders 27, 27 are provided with a first annular groove 29 axially outward and a second annular groove 30 axially inward, respectively.

The dew tray 25 is formed of a heat-resistant material such as metal into a box shape that is open upward, and has a pair of parts that face the lower part of the separator 6 and the lower part of the inner case 3b, respectively. Side plate portions 25a, 25a, and end plate portions 25b, 25b that connect both ends of both side plate portions 25a, 25a, respectively, and side plate portions 25a, 25a and end plate portion 25b that become narrower toward the bottom. , 25b, and a drain pipe 25d connected to the lower end of the bottom plate 25c, and fixedly arranged in the lower part of the cooling chamber 5.

Notches 31, for fitting and supporting the first annular grooves 29, 29 of both holders 27, 27 in the glass tube heater 23, are provided on the upper portions of both end plate portions 25 b, 25 b of the dew tray 25. 31 is provided. Moreover, the depths of the notches 31 and 31 are set such that the glass tube heater 23 is housed in the dew tray 25 when the first annular grooves 29 and 29 are fitted.

The cover 24 is made of a metal material such as an aluminum alloy, and is provided with a top plate portion 24 a disposed above the glass tube heater 23 and a top plate portion 24 a that is hung downward from both ends of the top plate portion 24 a. Support plates 24b and 24b, and side plates 24c and 24c hanging downward from both side edges of the top plate 24a.

At the lower portions of both support plate portions 24 b, 24 b of the cover 24, notches 32 for fitting and supporting the second annular grooves 30, 30 of both holders 27, 27 of the glass tube heater 23. 32 is 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 portion 24a is brought into contact with the lower end of the evaporator 15.

At the bottom of the cooling chamber 5, the storage pipe 3 is fitted with the drain pipe portion 25 d of the dew tray 25. Therefore, the connecting pipe 34 is opened on the drain tray 35 arranged in the lower portion of the storage chamber 8.

To explain the operation of this embodiment, when the glass tube heater 23 is energized, the cover 24 is heated by the radiant heat from the glass tube heater 23, and the evaporator 15 is heated by the heat conduction from the cover 24. Is heated, which allows the frost adhering to the evaporator 15 to be melted and removed. Thus, the water droplets generated by the defrost fall into the dew receiving tray 25, and are drained from the drain pipe portion 25d through the connecting pipe 34 to the drain tray 35. At this time, since the glass tube heater 23 is covered with the cover 24, water droplets falling from the evaporator 15 do not come into contact with the glass tube heater 23.

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

Moreover, since the glass tube heater 23 is housed in the dew tray 25, the radiant heat from the glass tube heater 23 is not directly radiated to the separator 6 and the inner case 3b, but the separator 6 due to the radiant heat is radiated. Also, damage to the inner case 3b can be avoided as much as possible.

[0022]

[Effect of the device]

 As described above, according to the present invention, the glass tube heater is housed in the dew tray with its both ends fitted and supported on both ends of the dew tray, and the cover whose upper surface is in contact with the evaporator is the glass tube heater. Since it is fitted and supported on both ends of the defroster, it is possible to configure the defroster with a reduced number of parts and to prevent the radiant heat from the glass tube heater from being directly radiated to the member that houses the evaporator. By avoiding this, damage of the member can be prevented.

[Brief description of drawings]

FIG. 1 is a partial vertical side view of a refrigerator, which is 1-1 of FIG.
It is sectional drawing which follows the line.

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]

 15 Evaporator 22 Defrosting device 23 Glass tube heater 24 Cover 25 Dew tray

Claims (1)

[Scope of utility model registration request] 1. A glass tube heater (23), a cover (24) for covering the glass tube heater (23) above, and a dew tray (25) arranged below the glass tube heater (23). In the defroster for a refrigerator arranged below the evaporator (15), the glass tube heater (23) is
Both ends thereof are fitted into and supported by the dew tray (25) and housed in the dew tray (25), and the upper surface of the evaporator (1) is
The cover (24) brought into contact with the glass tube heater (2)
A defroster for a refrigerator, which is fitted and supported at both ends of 3).