JP2002081841A - Electrical refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a method for installing a condenser pipe at a bottom part of a body of a refrigerator and further increase a thermal radiating efficiency. SOLUTION: There are provided a condenser pipe 3 arranged at a front segment of a bottom unit 2 of a main body 1 of a refrigerator; a bottom cover 6 fixed to cover the bottom unit of the body of the refrigerator and forming a duct 5 having a suction port 4 with its front side being opened for applying aeration at the condenser pipe; a fixing unit fixed to the bottom cover 6 and for supporting the condenser pipe from below and fixing it; and a machine chamber 11 arranged at the rear part of the bottom segment of the body of the refrigerator, one portion of it being communicated with the duct and the other portion of it having a blowing-out port 7 at a rear surface side of the bottom segment, and the machine chamber having a fan 8, a compressor 9 and an evaporating pan 10 for use in cooling operation. Heat conducting material is inserted between the condenser pipe and the bottom segment of the main body of the refrigerator or between the condenser pipe and the bottom cover, both of them are thermally coupled to each other to improve a thermal conduction between them.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric refrigerator, and more particularly, to an electric refrigerator provided with a condenser pipe to improve a heat radiation effect.

[0002]

2. Description of the Related Art Conventionally, an electric refrigerator having a duct and a condenser pipe at the bottom of a refrigerator body has been disclosed in Japanese Patent Application Laid-Open No. H5-15-1.
No. 72453, for example. The basic configuration of these conventional examples will be described with reference to FIG. 5A is a side sectional view of a main part of a lower portion of the main body, and FIG. 5B is a top view of the bottom of the main body as viewed from above. A condenser pipe 3 is provided in front of the bottom 2 of the refrigerator main body 1, and a machine room 11 is provided in the rear. In the machine room 11, a compressor 9 shown by a broken line, a fan 8 for cooling the compressor 9, and an evaporating dish 10 above the compressor 9 are arranged. The condenser pipe 3 is supported by the bottom cover 6, and the bottom 5 of the main body and the bottom cover 6 form a duct 5. The duct 5 has a suction opening 4 opened at the front, and is formed so as to ventilate to the rear left and communicate with the machine room 11 at the rear. A front grill 16 having a ventilation hole 16a is provided in front of the bottom 2 of the main body, and the outside air sucked from the ventilation hole 16a cools the condenser pipe 3 as shown by an arrow, and from the left of the back of the bottom 2 It is ventilated by the fan 8. The outside air sucked from the duct 5 cools the compressor 9 by the fan 8 and promotes evaporation of the defrost water accumulated in the upper evaporating dish 10.

[0003] The conventional method of forming a duct at the bottom and arranging a condenser pipe and ventilating the duct to radiate heat from the condenser pipe, which is conventionally performed, is greatly affected by dust. There is a problem that the heat dissipation efficiency is extremely reduced when the airflow is hindered, and there has been a demand for a heat dissipation method capable of operating even if the ventilation is obstructed and an improvement in the heat dissipation efficiency. The method of providing a condenser pipe at the bottom of the main unit is as follows:
Although it has become less used due to the small area of the bottom, in recent years, there has been an urgent need to reduce energy and use it more efficiently. It has been desired to develop a method capable of further improving the efficiency by utilizing the method.

[0004]

SUMMARY OF THE INVENTION In view of the above-described problems, an object of the present invention is to provide an electric refrigerator in which the method of mounting a condenser pipe provided on the bottom of a refrigerator body is improved to improve heat radiation efficiency. I do.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a condenser pipe provided at a front portion of a bottom of a refrigerator main body and a condenser pipe attached to cover the bottom of the refrigerator main body. A bottom cover forming a duct having a suction opening with an open front, a mounting portion fixed to the bottom cover for supporting and mounting the condenser pipe from below, and the bottom portion of the refrigerator body And a machine room in which one communicates with the duct and the other has an outlet on the back side of the bottom, and a fan for cooling, a compressor and an evaporating dish are arranged. An electric refrigerator, wherein a heat transfer material is provided between the condenser pipe and the bottom of the refrigerator main body for thermally coupling the two to improve heat conduction.

[0006] A condenser pipe is provided at the front of the bottom of the refrigerator main body, and is formed so as to cover the bottom of the refrigerator main body, and forms a duct having a suction opening with an open front for ventilating the condenser pipe. A bottom cover, a mounting portion for fixing and mounting so as to sandwich the capacitor pipe, the bottom cover, the cushioning material inserted between the capacitor pipe and the bottom cover,
A refrigerator is arranged at the rear of the bottom of the refrigerator body, one of which communicates with the duct, the other has an outlet on the back side of the bottom, and a fan for cooling, a compressor and an evaporating dish are arranged. An electric refrigerator including a machine room, wherein the cushioning material is a heat transfer material for improving heat conduction by thermally coupling both the condenser pipe and the bottom cover.

The heat transfer material is made of butyl rubber having elasticity.

In order to increase the contact surface with the condenser pipe, the heat transfer material has a concave groove or a concave portion at a portion in contact with the condenser pipe and the fixture.

The mounting portion includes a holding portion that presses and holds the capacitor pipe from the periphery and a fixing portion for mounting the capacitor pipe to the bottom cover, and is a mounting tool formed of an elastic metal member.

The attachment is formed by bending a plate having a predetermined width.

[0011]

1 is a sectional view of a main part of a lower part of a main body of an electric refrigerator according to a first embodiment of the present invention.
(B) is a front sectional view of a main part of the lower part of the main body. FIG. 2 shows a top view of the bottom of the refrigerator in the first embodiment. The basic configuration of the present invention will be described with reference to FIGS. Note that the same parts as those described in the conventional example are denoted by the same reference numerals. The electric refrigerator according to the present embodiment includes a condenser pipe 3 provided at the front of the bottom 2 of the refrigerator main body 1,
A duct 5 that is attached to cover the bottom 2 of the refrigerator body 1 and has an attachment portion including an attachment 12 for attaching a condenser pipe, and has a suction opening 4 with an open front for ventilating the condenser pipe 3. And a bottom cover 6 which is arranged at the rear of the bottom 2 of the refrigerator body 1, one of which communicates with the duct 5 and the other has an outlet 7 on the back side of the bottom 2 of the refrigerator body 1 for cooling. And a machine room 11 in which a fan 8, a compressor 9 and an evaporating dish 10 are disposed.

As shown in the enlarged view of the main part of FIG. 1 (a), the mounting part supports a main part of the condenser pipe 3 and is mounted on the bottom cover 6 for fixing. And between the bottom part 2 of the refrigerator body 1 and
Heat transfer material 13 for thermally bonding both to improve heat conduction
Consists of The heat transfer material 13 is fixed in close contact with the bottom 2 of the refrigerator main body 1, and in order to further increase the contact surface with the condenser pipe 3, a concave groove 13 a or a groove 13 a is provided in a portion in contact with the condenser pipe 3 and the fixture 12. It has a recess 13b. That is, the shape of the portion of the heat transfer material 13 that contacts the pipe is a semicircular concave groove 13a corresponding to the shape of the pipe, and the shape of the portion that contacts the connecting portion of the pipe or the fitting 12 is the shape of the pipe and the concave groove. The recess 13b has a corresponding shape so as not to hinder contact.

A drawer 15 serving as a freezer compartment or a vegetable compartment is provided at the lower part of the main body.
5a. A front grill 16 is provided below the drawer door 15a on the front to enhance the appearance of the lower portion of the refrigerator. A ventilation hole 16a is provided on the front side of the front grill 16 so that the outside air sucked from the ventilation hole 16a flows to the duct 5 from the suction port 4.
Casters 18 and legs 19 are attached to the lower part of the main body,
A predetermined space is secured from the floor.

With the above configuration, as shown in FIG.
Ventilation holes 16 in front grill 16 in front of bottom 2 of the body
The outside air sucked from a flows into the duct 5 from the suction port 4 as shown by the arrow, cools the condenser pipe 3, and is ventilated by the fan 8 from the left side at the back. On the left side of the back of the machine room 11, there is an auxiliary air intake hole 14, and the outside air sucked from the auxiliary air intake hole 14 and the duct 5 cools the compressor 9 by the fan 8 and the upper evaporating dish 10
The air is exhausted from the outlet 7 while promoting the evaporation of the defrost water accumulated in the air. The provision of the auxiliary intake hole 14 is as follows.
This is to prepare for a case where the duct 5 is clogged. A central portion of the bottom cover 6 is provided with a spacer 20 for connecting and fixing to the bottom 2 so that a space between the bottom 2 and the bottom cover 6 is secured and fixed. This ensures that the condenser pipe 3 closely adheres to the bottom 2 of the main body with the heat transfer material 13 interposed therebetween.

FIGS. 3 (a) to 3 (c) for explaining an embodiment of a fixture for a condenser pipe are different examples. The condenser pipe 3 is provided with a heat transfer material 13 for improving heat conduction between the bottom and the bottom 2 of the refrigerator main body 1 while being supported by attaching key points to the bottom cover 6 with a fixture 12. 3 is transferred to the bottom 2. 3A is a holding unit 1 that presses and holds the condenser pipe 3 from both sides.
2a and a fixing portion 12b for attaching to the bottom cover 6 and are formed of an elastic metal member. The fixing portion 12b is fixed to the bottom cover 6 by welding or tapping screws. Since the upper part is open, the condenser pipe 3 may be pushed in from above, so that the mounting can be performed easily. Mounting fixture 1 shown in FIG.
Reference numeral 2 'includes a holding portion 12a' for pressing and holding the condenser pipe 3 from the surroundings and a fixing portion 12b 'for attaching to the bottom cover 6, and is formed of an elastic metal member. The fixing portion 12b 'is fixed to the bottom cover 6 with a tapping screw or the like. Since this shape sandwiches the condenser pipe 3 from the surroundings, it can be reliably held and can have good thermal conductivity. Since these attachments 12 and 12 'are formed by bending a plate material having a predetermined width, it is possible to reduce costs and improve heat conductivity. The heat of the condenser pipe 3 is transferred to the bottom 2 by the heat transfer material 13 and the fittings 12 and 12 ′.
And the heat is also radiated from the bottom cover 6.

FIG. 4 is a side sectional view showing a main part of an electric refrigerator according to a second embodiment of the present invention. The second embodiment and the first embodiment differ only in the insertion position of the heat transfer material of the mounting portion,
Other parts are the same, so different parts will be described with reference to the drawings. In the first embodiment, a heat transfer material 13 is disposed between the condenser pipe 3 and the bottom 2 so that the condenser pipe 3 is in contact with the bottom 2 of the main body 1 of the refrigerator. In the second embodiment, the heat transfer material 13 is sandwiched between the condenser pipe 3 and the bottom cover 6 as shown in the enlarged view of the main part of FIG. So that the heat of the condenser pipe 3 is well conducted to the bottom cover 6. In order to further increase the contact surface with the condenser pipe 3 as in the first embodiment,
A concave groove or a concave portion is provided at a portion where the condenser pipe 3 and the fixture 12 are in contact.

As explained in the first embodiment,
3A and 3B may have the same shape.
As shown in (c), the attachment 12 ″ has a substantially horseshoe cross section. When the attachment 12 ″ has a substantially horseshoe cross section as shown in the figure, both ends are fixed with tapping screws or the like, so that the fixing is more stable. be able to. The concave portion 12b of the heat transfer material 13 corresponding to the fixing portion to the bottom cover 6 such as the fixture 12 ″ in the second embodiment is a through hole so that the fixture 12 ″ and the bottom cover 6 are in direct contact. Good thermal bonding. Also in the second embodiment, the condenser pipe 3 and the bottom cover 6 can be formed as an integral unit,
In particular, there is an advantage that heat radiation from the bottom cover 6 to the outside air can be promoted.

In the first and second embodiments, the heat transfer material 13 is butyl rubber having both functions of a buffer material having elasticity and a heat transfer material or a heat storage material. A heat transfer sheet such as another heat storage material or resin may be used. However, by using butyl rubber, the adhesion can be improved and the contact area can be increased by the elastic force, and the heat transfer property can be further improved. When these heat transfer materials 13 are not used, heat radiation due to thermal coupling with other parts in places other than the fixtures can hardly be expected. However, according to the method of the present invention, in addition to the ventilation in the duct, the refrigerator body It is possible to utilize the heat dissipation to either 1 or bottom cover 6. Further, even if the ventilation in the duct is obstructed, the heat radiation from the condenser pipe 3 is possible. By providing the heat transfer material 13 and using butyl rubber, it is possible to prevent noise generated at a portion in contact with the condenser pipe 3 and the bottom portion 2 or the bottom cover 6 and also to absorb an error at the time of manufacturing.

[0019]

The present invention is embodied as described above, and has the following effects. A condenser pipe provided at the front of the bottom of the refrigerator main body, a bottom cover attached to cover the bottom of the refrigerator main body, and a bottom cover forming a duct having a suction opening with a front opening for ventilating the condenser pipe; A mounting portion fixed to the cover for supporting and mounting the condenser pipe from below, and disposed at the rear of the bottom of the refrigerator body, one having communication with the duct and the other having an outlet on the back side of the bottom. An electric refrigerator provided with a fan, a compressor for cooling, and a machine room in which an evaporating dish is disposed, wherein the electric refrigerator is provided between the condenser pipe and the bottom of the refrigerator body or between the condenser pipe and the bottom cover. Since the heat transfer material is inserted into the heat sink and the two are thermally coupled to improve heat conduction, an electric refrigerator with improved heat radiation efficiency can be provided.

[Brief description of the drawings]

FIG. 1A is a sectional side view of a main part of a lower part of a main body of an electric refrigerator according to a first embodiment of the present invention, and FIG.

FIG. 2 is a top view of a main body bottom of the electric refrigerator of the present invention.

3 (a) to 3 (c) are perspective views showing different embodiments for describing a fixture in the electric refrigerator of the present invention.

FIG. 4 is a sectional side view of a main part of a lower portion of a main body of an electric refrigerator according to a second embodiment of the present invention.

5A and 5B show an embodiment of an electric refrigerator in a conventional example, wherein FIG. 5A is a sectional side view of a main part of a lower part of a main body, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigerator main body 2 Bottom part 3 Condenser pipe 4 Suction port 5 Duct 6 Bottom cover 7 Air outlet 8 Fan 9 Compressor 10 Evaporating dish 11 Machine room 12, 12 ', 12 "Fixture 12a, 12a' Clamping part 12b, 12b 'Fixed part Reference Signs List 13 heat transfer material 14 auxiliary intake hole 15 drawer 15a drawer door 16 front grille 16a vent hole 18 caster 19 leg 20 spacer

Claims (6)

[Claims] 1. A condenser pipe provided at a front portion of a bottom portion of a refrigerator main body, and a duct attached to cover the bottom portion of the refrigerator main body and having a suction opening with a front opening for ventilating the condenser pipe. A bottom cover to be formed, a mounting portion fixed to the bottom cover, for supporting and mounting the condenser pipe from below, and disposed at a rear portion of the bottom portion of the refrigerator main body, one of which is in communication with the duct and the other of which is connected to the duct. An electric refrigerator having an air outlet on the back side of the bottom, and a machine room in which a fan for cooling, a compressor, and an evaporating dish are provided, wherein the condenser pipe and the bottom of the refrigerator main body are provided. And a heat transfer material for thermally coupling the two to improve heat conduction. 2. A condenser pipe provided at the front of the bottom of the refrigerator main body, and a duct attached to cover the bottom of the refrigerator main body and having a suction opening with a front opening for ventilating the condenser pipe. A bottom cover to be formed; a mounting portion for fixing and mounting so as to sandwich the condenser pipe, the bottom cover, and a cushioning material inserted between the capacitor pipe and the bottom cover; and the bottom portion of the refrigerator body. And a machine room in which one communicates with the duct and the other has an outlet on the back side of the bottom, and a fan for cooling, a compressor and an evaporating dish are arranged. An electric refrigerator, wherein the cushioning material is a heat transfer material for improving heat conduction by thermally coupling both the condenser pipe and the bottom cover. Electric refrigerators to butterflies. 3. The electric refrigerator according to claim 1, wherein the heat transfer material is made of butyl rubber having elasticity. 4. The heat transfer material according to claim 1, wherein the heat transfer material has a concave groove or a concave portion at a position where the heat transfer material is in contact with the condenser pipe and the mounting tool so as to increase a contact surface with the condenser pipe. 3. The electric refrigerator according to 3. 5. The mounting part, comprising: a holding part that presses and holds the capacitor pipe from the periphery and a fixing part for mounting the condenser pipe to the bottom cover, wherein the mounting part is formed of a metal member having elasticity. 2. The method according to claim 1, wherein
Or the electric refrigerator according to 2. 6. The electric refrigerator according to claim 5, wherein the attachment is formed by bending a plate having a predetermined width.