JP4038926B2 - Freezer refrigerator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refrigerator-freezer using a refrigerant that does not adversely affect the global environment.
[0002]
[Prior art]
Currently, chlorofluorocarbon refrigerants are used as refrigerants in refrigerators. Among them, CFC-based refrigerants and HCFC-based refrigerants have been shifted to HFC-based refrigerants in order to destroy the ozone layer. HFC134a is widely used in household refrigerator-freezers. However, HFC refrigerants are also substances that promote global warming, and the use of natural refrigerants such as hydrocarbon refrigerants and ammonia that do not deteriorate the global environment is being studied.
[0003]
As a refrigerator-freezer using these, for example, there is one disclosed in JP-A-8-178481. As the refrigerant of the refrigerator-freezer, a hydrocarbon-based refrigerant that is a flammable refrigerant such as propane or butane having a very small influence on global warming is used. However, these materials are flammable, and when they are present in a certain concentration range (hereinafter referred to as the explosion limit), if there is an ignition source such as sparks at the same time, the danger of explosion has been pointed out. No consideration is given to position or number.
There are the following ignition sources in the case of using a flammable refrigerant, and all of them have been conventionally arranged in a warehouse.
[0004]
FIG. 7 is a perspective view of the inside of the refrigerator when the refrigerator compartment door of the conventional refrigerator is opened. A temperature adjustment knob 11 for finely adjusting the internal temperature is disposed at a position where the internal temperature is easy to operate. The temperature adjustment knob 11 is realized by a volume directly attached on the temperature adjustment board. When a signal is sent from the temperature adjustment board to the main board, the compressor and the electric damper are opened and closed, and the blower fan is operated. Is controlling.
As described above, since the temperature adjustment knob 11 is an electrical component, there is a possibility that it becomes an ignition source when a flammable refrigerant is used.
[0005]
FIG. 8 shows the configuration of the connector portion. 13 is a housing, 14 is a lead wire terminal, and 15 is a terminal. After the lead wire terminal 14 is peeled off and the terminal 15 is attached using a tool, the lead wire terminal 14 is inserted into a housing 13 made of plastic or the like. The mating counterpart is also configured in the same manner, and is mated in a male shape and a female shape.
[0006]
In this way, when the place where the terminal 15 and another terminal 15 are press-contacted or soldered is incompletely contacted, there is a possibility of short-circuiting at the gap if both ends are energized. When this happens, sparks may come out.
[0007]
FIG. 9 is a cross-sectional view of 20 parts of a conventional refrigerator water supply tank. By supplying water to a water supply tank 20 disposed in the warehouse, an impeller pump 21 having a magnet installed in the tank is rotated by a pump drive source 22 installed in the refrigerator wall 2, Water is poured into the ice tray.
In a refrigerator equipped with an automatic ice making function that supplies water to the ice tray using a drive source such as a pump by supplying water to the water tank installed in the warehouse, the ice tray is inverted by judging the presence or absence of ice. In order to perform a series of operations such as supplying the water to the ice tray again after the pump is operated, the gear box for inverting the pump and the ice tray is transmitted with a control command from the main board as a signal. It is working.
As described above, since the driving source such as the pump is an electrical component, there is a possibility that it becomes an ignition source when a flammable refrigerant is used.
[0008]
FIG. 10 is a side sectional view of a conventional refrigerator rear wall and a lighting device located there. 2 is a heat insulating wall, 8 is a main board, 12 is a connector portion, 14 is a lead wire terminal, 25 is an interior light cover, 26 is a lamp, 27 is a socket, and 28 is an interior rear panel.
In FIG. 10, a lamp 26 is incorporated in a socket 27 on the back side of the interior light cover 25 arranged on the back of the interior, and the lead wire terminal 14 extends from the main board 8 and passes through the heat insulating material 2 to enter the interior. And is connected to the lamp by the connector 12. When the connector 12 which is a connection part and an electrical part is in the cabinet, and a flammable refrigerant is used, it may become an ignition source. The lighting in the cabinet is instructed to operate in accordance with the opening and closing of the door.
[0009]
[Problems to be solved by the invention]
In the conventional refrigerator-freezer as described above, a refrigerant having a small influence is used to suppress global warming, but at the same time, there is a risk of explosion. In the present invention, even if the explosion limit is reached for some reason, the risk of explosion is greatly reduced by reducing the presence of the ignition source.
[0010]
Moreover, the conventional convenience is maintained without lowering the value of the product, and the usability is further improved.
[0011]
[Means for Solving the Problems]
A refrigerator-freezer according to the present invention includes an electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion that couples the electrical wiring to an electrical wiring joined to another electrical component, and a heat insulating wall. Rutotomoni a within enclosed compartment, the ice tray, a water supply tank for storing water for supplying water to the ice tray, and a pump for supplying water to the ice tray from the water supply tank, a pump driving source for driving said pump In a refrigerator-freezer that uses a flammable refrigerant, a through-hole that is provided in a part of the heat insulating wall and penetrates the inside and the outside of the refrigerator, and the heat from the outside of the refrigerator. A lid portion made of a member having excellent heat insulation having a diameter larger than the diameter of the through hole so as to suppress intrusion, the electric wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is along with the block in the lid, the Pont And comprises a magnet to be paired to the driving source, the pump driving source with placing the Kurasotogawa the insulating wall is obtained by forming the pump drive source to a member integral with the heat insulating property.
[0012]
In addition, the refrigerator-freezer according to the present invention includes an electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion that couples the electrical wiring and an electrical wiring joined to another electrical component, and heat insulation. In a refrigerator-freezer that uses a flammable refrigerant, a through-hole that is provided in a part of the heat insulating wall and penetrates the inside and the outside of the refrigerator, and heat from the outside of the refrigerator A lid portion made of a member having excellent heat insulation having a diameter larger than the diameter of the through hole so as to suppress the penetration of the electric hole, the electric wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is formed. The light guide plate is composed of a light guide plate located on the back wall in the cabinet and a light source provided outside the cabinet at the top of the light guide plate, and at least using the light guide plate illumination. Illuminating two or more partitioned rooms It is intended to.
[0013]
The refrigerator-freezer according to the present invention is characterized in that the light guide plate illumination is molded integrally with a heat insulating wall.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
[0015]
1 and 2 are perspective views showing a part of the main body wall of the refrigerator according to the present embodiment. 2 is a heat insulating wall, 3 is a through hole, 4 is a through hole lid part, 12 is a connector part, 32 is an electrical wiring, and 16 is a flat cable part having a thin cable shape in the electrical wiring 32. In FIG. 1, after connecting the connector portion 12 to the electrical wiring 32 in the refrigerator, the connector portion 12 is arranged outside the refrigerator through the through hole 3 in the refrigerator main body wall surface 2. Thereafter, the through hole 3 is closed by the lid portion 4. A lid part is provided in the inside of a warehouse and uses a member excellent in heat insulation.
In the above configuration, when a flammable substance is used as a refrigerant, the connector part 12 which is an electric wiring connecting part that may ignite or explode even if the flammable substance leaks into the box. It is provided outside the cabinet so that it does not exist, and the inside of the cabinet is surrounded by a heat insulating wall, so there is no risk of ignition or explosion.
[0016]
The AA sectional view of the flat cable portion 16 is shown in the upper left part of FIG. The flat cable portion 16 is a part of the electric wiring 32 and has a thin cable shape. After the electrical wiring 32 and the flat cable portion 16 are connected by the connector portion 12 in the refrigerator, the connector portion 12 is disposed outside the refrigerator through the through hole 3 in the wall surface 2 of the refrigerator body. Thereafter, the through hole 3 is closed by the lid portion 4. The lid part 4 is a member that is provided on the inner side and is excellent in heat insulation. When closing the through-hole 3 with the lid part 4, the electrical wiring 32 is a flat cable, so that the gap between the lid part 4 and the main body heat insulating wall surface 2 can be minimized when the lid part 4 is attached. The invasion of heat from outside the chamber can be suppressed, and the attachment of the lid part is improved. In particular, the electrical wiring 32 at the portion where the lid portion 4 and the main body heat insulating wall surface 2 are in contact with each other is preferably flat.
[0017]
FIG. 3 is a sectional view showing a part of the main body wall of the refrigerator according to the present embodiment. 2 is a heat insulating wall surface of the main body, 3 is a through hole, 4 is a through hole lid portion, B is a diameter of the through hole 3, and C is a diameter of the through hole lid portion. The through hole lid 4 is fixed to the heat insulating wall 2 with screws. The through-hole lid diameter C is larger than the through-hole diameter B in the refrigerator main body wall surface 2, and even if a gap is generated between the lid portion 4 and the main body wall surface 2, the intrusion path should be long. This suppresses the intrusion of heat from the outside. Further, by setting the through hole lid diameter C to be twice or more as large as the through hole diameter B, heat penetration can be sufficiently suppressed.
[0018]
Embodiment 2. FIG.
Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
4 and 5 are cross-sectional views of 20 parts of the refrigerator water supply tank according to the present embodiment. 2 is a refrigerator heat insulating wall, 20 is a water supply tank, 21 is a pump (impeller) equipped with a magnet, 22 is a pump drive source that is driven to face the magnet of the pump 21, and 23 is a pump drive source lid. A pump 21 equipped with a magnet installed in the tank is rotated by a pump drive source 22 installed in the refrigerator wall 2 and water is poured into the ice tray.
The pump drive source 22 is disposed on the wall 2 surface of the heat insulation box from the outside of the warehouse, and the back surface of the pump drive source is covered with a lid portion 23 made of a member having excellent heat insulation. In the unlikely event that a combustible substance is used as a refrigerant by installing electric parts such as the pump drive source 22 outside the box and installing anything other than electric parts such as a pump without a charging part inside the box There is no risk of ignition or explosion even if leaked inside.
[0019]
Moreover, in FIG. 5, the pump drive source 22 arrange | positioned from the warehouse outer side and the cover part 23 which consists of a member excellent in heat insulation in the pump drive source back surface are integrally shape | molded on the wall 2 surface of the heat insulation box. . Therefore, assembly work can be simplified.
[0020]
Embodiment 3 FIG.
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
FIG. 6 is a side cross-sectional view of the refrigerator back wall and the lighting device located there according to the present embodiment. 2 is a heat insulating wall, 8 is a main substrate, 14 is a lead wire terminal, 29 is a light guide plate, 30 is a light source, and 31 is an acrylic plate provided with a diffusion part. A lead wire terminal 14 extends from the main board 8 and is connected to a light source 30 by a connector 12 outside the cabinet.
The light guide plate 29 has a light source 30 and an acrylic plate 31 provided with a diffusion portion as a basic configuration, and uses light from the light source 30 as indirect illumination light. Examples of the light source include an LED, a cold cathode lamp, and a thin hot cathode lamp. By adopting a configuration in which the light source 30 is installed outside the warehouse in this way, if a flammable substance is used as a refrigerant because no light source is installed inside the warehouse, there is a risk of ignition or explosion even if it leaks into the warehouse. There is no sex. In addition, lighting fixtures such as lamps are usually required in the cabinet to improve the visibility of food in the cabinet, but by using the light guide plate illumination as in this embodiment, it is thin, highly uniform, and high performance. There is an effect.
[0021]
Further, in the present embodiment, it is possible to change the issuance color by changing the light source 30 by utilizing the characteristics of the LED having a plurality of light colors as the light source of the light guide plate illumination. Alternatively, by providing a plurality of light sources 30, the issue color can be changed according to the case.
[0022]
Further, in the present embodiment, it is possible to realize a maintenance-free lighting fixture by using the long-life LED for the light source 30 by utilizing the characteristic of the light guide plate illumination as indirect illumination light.
[0023]
Further, in the present embodiment, it is possible to illuminate at least two or more partitioned rooms with one light source 30 by making use of the characteristics of light guide plate illumination, which improves usability.
[0024]
Further, in the present embodiment, it is possible to improve the design by taking advantage of the characteristic that the light guide plate illumination can be made thin and forming it integrally with the heat insulating wall.
[0025]
It is necessary to always operate the electrical component group existing in the refrigerator during the period when the refrigerator is used. Therefore, it is necessary to take a form that can be promptly repaired or replaced even when the electrical component group fails for some reason. Specifically, it needs to be fixed by a method that can be removed later. For this reason, the electrical component group is fixed with screws, rivets, claws, etc., and the electrical wiring from the electrical component is joined by a detachable component called an electrical connector (electrical wiring coupling part) or directly soldered to the contact part. Or Further, since these electric wirings need to be further connected to the main board, the electric wirings are coupled to each other with the connector between the main wiring boards. In addition, the terminals are pressed or soldered, but may be incompletely in contact.
When using flammable refrigerants such as hydrocarbons as the refrigerant, connect the electrical wiring connectors and electrical wiring connections, such as the electrical wiring connectors and soldered contacts from these electrical components. If the refrigerant leaks into the cabinet, it may ignite or explode when sparked or shorted.
In the above-mentioned present invention, the danger of explosion was eliminated by arranging the contact part and the electrical wiring coupling part of the electrical parts which are conventionally arranged in the warehouse.
[0026]
【The invention's effect】
A refrigerator-freezer according to the present invention includes an electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion that couples the electrical wiring to an electrical wiring joined to another electrical component, and a heat insulating wall. Rutotomoni a within enclosed compartment, the ice tray, a water supply tank for storing water for supplying water to the ice tray, and a pump for supplying water to the ice tray from the water supply tank, a pump driving source for driving said pump In a refrigerator-freezer that uses a flammable refrigerant, a through-hole that is provided in a part of the heat insulating wall and penetrates the inside and the outside of the refrigerator, and the heat from the outside of the refrigerator. A lid portion made of a member having excellent heat insulation having a diameter larger than the diameter of the through hole so as to suppress intrusion, the electric wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is along with the block in the lid, the Pont And comprises a magnet to be paired to the driving source, wherein the pump driving source with placing the Kurasotogawa the insulating wall, the pump driving source a combustible leak member and for molded integrally with the chance chamber having heat insulating properties However, there is no risk of ignition or explosion, and at the same time, the assembly work can be simplified.
[0027]
In addition, the refrigerator-freezer according to the present invention includes an electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion that couples the electrical wiring and an electrical wiring joined to another electrical component, and heat insulation. In a refrigerator-freezer that uses a flammable refrigerant, a through-hole that is provided in a part of the heat insulating wall and penetrates the inside and the outside of the refrigerator, and heat from the outside of the refrigerator A lid portion made of a member having excellent heat insulation having a diameter larger than the diameter of the through hole so as to suppress the penetration of the electric hole, the electric wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is formed. The light guide plate is composed of a light guide plate located on the back wall in the cabinet and a light source provided outside the cabinet at the top of the light guide plate, and at least using the light guide plate illumination. To illuminate two or more partitioned rooms, Ignition even if the flammable leaks in the refrigerator, there is no danger of explosion, ease of use often, it is possible to obtain a flat-screen, high uniformity, the effects such as high-performance properties.
[0028]
Moreover, since the refrigerator-freezer concerning this invention shape | molded the said light-guide plate illumination integrally with the heat insulation wall, it can improve the designability.
[Brief description of the drawings]
FIG. 1 is a perspective sectional view of a wall surface of a refrigerator-freezer according to an embodiment of the present invention.
FIG. 2 is a perspective sectional view of a wall surface of a refrigerator-freezer according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view of a wall through hole of a refrigerator-freezer according to an embodiment of the present invention.
FIG. 4 is a cross-sectional view of a water supply tank of a refrigerator-freezer according to an embodiment of the present invention.
FIG. 5 is a cross-sectional view of a water supply tank of a refrigerator-freezer according to an embodiment of the present invention.
FIG. 6 is a side cross-sectional view of a back wall of a refrigerator-freezer according to an embodiment of the present invention and a lighting device located there.
FIG. 7 is a wall perspective sectional view of a conventional refrigerator-freezer.
FIG. 8 is a perspective view of a conventional connector.
FIG. 9 is a cross-sectional view of a water supply tank of a conventional refrigerator-freezer.
FIG. 10 is a side cross-sectional view of a rear wall of a conventional refrigerator-freezer and a lighting device located there.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat insulation box, 2 Heat insulation wall, 3 Through hole, 4 Through hole cover part, 6 Refrigerator door, 8 Main board, 11 Temperature control knob, 12 Connector part, 13 Housing, 14 Lead terminal, 15 Terminal, 16 Flat Cable, 20 Water supply tank, 21 Impeller equipped with magnet, 22 Pump drive source, 23 Pump drive source lid part, 25 Inside lamp cover, 26 Lamp, 27 Socket, 28 Inside rear panel, 29 Light guide plate, 30 Light source, 31 Acrylic plate provided with a diffusion part, 32 Electrical wiring.

Claims (3)

An electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion for joining the electrical wiring to an electrical wiring joined to another electrical component, and an interior enclosed by a heat insulating wall And an automatic ice making function comprising an ice tray, a water supply tank for storing water to be supplied to the ice tray, a pump for supplying water from the water supply tank to the ice tray, and a pump drive source for driving the pump. However , the refrigerant is a refrigerator-freezer using a flammable refrigerant,
From a through hole that is provided in a part of the heat insulating wall and that penetrates the inside and outside of the warehouse, and a member that has a diameter greater than the diameter of the through hole so as to suppress heat intrusion from outside the warehouse. The electrical wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is closed with the lid portion ,
A magnet that is paired with the pump and the drive source is provided, the pump drive source is disposed on the heat insulating wall from the outside of the warehouse, and the pump drive source is formed integrally with a member having heat insulation properties. Freezer refrigerator. An electrical component, an electrical wiring joined to the electrical component, an electrical wiring coupling portion for joining the electrical wiring to an electrical wiring joined to another electrical component, and an interior enclosed by a heat insulating wall In the refrigerator-freezer using a flammable refrigerant,
From a through hole that is provided in a part of the heat insulating wall and penetrates the inside and outside of the warehouse, and a member that has a diameter greater than the diameter of the through hole so as to suppress heat intrusion from outside the warehouse. The electrical wiring coupling portion is disposed outside the warehouse through the through hole, and the through hole is closed with the lid portion,
The lighting fixture is a light guide plate illumination composed of a light guide plate located on the back wall inside the cabinet and a light source provided outside the cabinet above the light guide plate, and at least two or more partitions are divided using the light guide plate illumination. A refrigerator-freezer characterized by illuminating a room. 3. The refrigerator-freezer according to claim 2, wherein the light guide plate illumination is molded integrally with a heat insulating wall.

Images