JPH0593577A - Door device for freezing refrigerator - Google Patents

Abstract

PURPOSE:To obtain a door device, capable of preventing the surface of a partitioning body from dewing and excessive temperature rise, by a method wherein the door device for a freezing refrigerator is permitted to maintain the surface temperature of the partitioning body at the optimum temperature even when the same device is employed for a freezing chamber and the like, whose inside temperature is low. CONSTITUTION:The title door device is constituted of a temperature detecting means 29, detecting the surface temperature of a partitioning body, a control means 30, consisting of a microcomputer and the like inputting an input signal from the temperature detecting means 29, a driving means 27, operated by an output signal from the control means 30, and a perspiration preventing heater 13, operated by the driving means 27.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator door device in which an opening of a heat insulating box is opened and closed by a double-door type door and a back gasket is provided with a gasket for sealing.

[0002]

2. Description of the Related Art Conventionally, this type of door device is, for example, NR-F40VP1 released by Matsushita Cold Machinery Co., Ltd. in March 1990.
There was one that was adopted for the type refrigerator / freezer. The configuration will be described below with reference to FIGS. 7 to 11.

Reference numeral 1 is a freezer-refrigerator body, 2 is an outer box made of an iron plate, and 3 is an inner box made of synthetic resin. Reference numeral 4 denotes a foamed heat insulating material filled between the outer box 2 and the inner box 3 to form a heat insulating box body 5 having an opening on the front surface. 6A and 6B are upper and lower hinges 7A and 7B provided above and below the left and right edges of the heat insulating box 5.
It is a double-door type double door that is attached to rotate freely.

Numeral 8 is a guide portion which is located on the non-attachment side of each of the doors 6A and 6B, and which is installed above and below the edge portion of the opening 5A of the heat insulating box 5 so as to face each other. The front surface of the guide portion 8 is planar and is flush with the opening 5A. 8A
Is a projection of the guide portion, and 9 is a partition.

Reference numeral 10 is a molded product made of synthetic resin having a semicircular groove forming the partition body 9, and 11 is a back cover forming the back surface of the partition body 9. Reference numeral 12 is a front decorative plate of the partition 9, reference numeral 13 is a perspiration preventing heater, and reference numeral 14 is a heat insulating material.
Reference numeral 15 is a heat dissipation pipe for preventing sweating provided inside the edge of the opening 5A, and 16 is a decorative plate forming the edge of the opening 5A. Reference numeral 17 is a frame body that constitutes the edge of the opening 5A. 18
Is a heat insulating material.

Reference numeral 19 is a gasket attached to the back surface peripheral portions of the doors 6A and 6B, 20 is the inside of the refrigerating compartment, and 21 is a portion located on the non-attaching side of the back surface of the door 6A. It is a support arm protruding to. 22 indicates the temperature inside the freezer compartment, and 23 indicates the temperature inside the freezer compartment 22 and the compressor 2
4 is an inside temperature detecting means including a thermistor for sending the operation control signal of No. 4 and the like.

The operation of the door device of the refrigerator constructed as above will be described below. When the door 6A is closed, the partition body 9 enters the inside 20 of the compartment, and the projection 8A of the guide portion 8 and the semicircular groove of the molded product 10 come into contact with each other to rotate. When the partition body 9 is aligned with the semicircular groove of the molded product 10, the partition body 9
The front surface is flush with the opening 5A of the heat insulating box 5, and the gaskets 19 on the non-pivotal side of both doors abut on the front surface of the partition body 9 to keep the inside of the cabinet airtight.

Next, the control circuit will be described. Reference numeral 25 is a control means composed of a microcomputer or the like, to which the in-compartment temperature detection means 23 is connected as an input. As outputs, drive means 26 for moving the compressor 24 and drive means 27 for energizing the perspiration prevention heater 13 are connected.

The operation of the above arrangement will be described with reference to FIG. In step 1, the data input from the internal temperature detection means 23 is compared with preset temperature data. When it is determined that the data input in step 1 is high, the process proceeds to step 2 and the control means 25 outputs the data to the drive means 26 to turn on the compressor 24. Further, the process proceeds to step 3, the controller 25 outputs the current to the drive device 27 to energize the perspiration prevention heater 13, and the process returns to step 1.

When it is judged that the input data is low in step 1, the control means 25 outputs the data to the driving means 27 so as to turn off the compressor 24 in step 4, and further proceeds to step 5 to the perspiration prevention heater 13. The control means 25 outputs to the drive means 27 so as to stop the energization of No. 2, and the procedure returns to step 1.

[0011]

However, when the above-mentioned conventional technique is applied to a freezing room or the like having a low inside temperature, the difference between the outside air temperature and the inside temperature is large, so that the outside temperature and the inside temperature are changed. It is difficult to maintain an appropriate temperature on the front surface of the partition body, and there is a drawback that dew condensation forms on the front surface of the partition body. In addition, the temperature of the front surface of the partition body becomes too high, and there is a drawback that touching the human body may cause damage such as burns to the human body.

The present invention solves the above-mentioned conventional problems, and provides a door device for a refrigerator / freezer which prevents dew condensation on the front surface of the partition and excessive temperature rise.

[0013]

In order to solve the above-mentioned problems, a door device for a refrigerator / freezer according to the present invention comprises a heat-insulating box body having an opening, and a double-door open type rotatably supported on both sides of the opening. The first and second doors, the gaskets respectively provided on the peripheral edges of the back surfaces of both doors, and the opening edge portions located on the non-supporting side of the both doors are installed, and the front surface is flat and flush with the opening. A guide portion having a protrusion or a groove, and the first
The door extends in the direction of the axis of rotation of the door at a length substantially extending to the opening edge of the back surface of the non-supporting side portion and is rotatably supported, and enters into the refrigerator with the closing operation of the first door. A partition body having a groove or a projection that comes into contact with the guide portion and rotates to slidably fit to the guide portion, a heating element in the partition body, and a temperature detecting means for detecting the temperature of the partition body are incorporated. The control circuit operates the heating element according to the temperature change of the partition body detected by the temperature detecting means.

[0014]

According to the present invention, since the temperature detecting means is built in the partition body according to the above-mentioned structure, it is possible to energize the heating element contained in the partition body according to the temperature change on the front surface of the partition body. It is possible to prevent dew condensation on the front surface of the body and excessive temperature rise.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. The same parts as those of the related art are designated by the same reference numerals and detailed description thereof will be omitted.

Reference numeral 1 is a refrigerating / refrigerating body, 2 is an outer box made of an iron plate, and 3 is an inner box made of synthetic resin. Reference numeral 4 denotes a foamed heat insulating material filled between the outer box 2 and the inner box 3 to form a heat insulating box body 5 having an opening on the front surface. 6A and 6B are upper and lower hinges 7A and 7B provided above and below the left and right edges of the heat insulating box 5.
It is a double-door type double door that is attached to rotate freely. Reference numeral 8 is a guide portion that is located on the non-attachment side of each of the doors 6A and 6B, and is installed above and below the edge portion of the opening 5A of the heat insulating box 5 so as to face each other. The front surface of the guide portion 8 is planar and is flush with the opening 5A. 8A is a protrusion of the guide portion, and 28 is a partition body.

Reference numeral 10 denotes a molded article made of synthetic resin having semicircular grooves constituting the partition body 28, and 11 denotes the partition body 28.
Is a back cover that constitutes the back surface of the. 12 is a partition 28
Is a front decorative plate, 13 is a perspiration preventing heater, and 14 is a heat insulating material. Reference numeral 15 is a perspiration preventing heat radiation pipe provided inside the edge of the opening 5A, and 16 is a decorative plate forming the edge of the opening 5A. Reference numeral 17 is a frame body that constitutes the edge of the opening 5A. 18 is a heat insulating material. Reference numeral 19 is a gasket attached to the back surface peripheral portions of the doors 6A and 6B, and 20 is inside the refrigerating compartment, but may be inside the freezing compartment. Numeral 21 indicates two parts in the upper and lower refrigerating compartments on the non-attachment side of the back surface of the door 6A.
It is a support arm protruding in the 0 direction.

Next, the operation of the control circuit will be described. Thirty
Is a control means composed of a microcomputer or the like, and is a temperature detection means 2 capable of detecting the front surface temperature of the partition 28 as an input.
9 is connected. A drive circuit 27 for energizing the perspiration prevention heater 13 as an output is connected.

The operation of the above arrangement will be described with reference to FIG. In step 6, the front surface temperature data of the partition 28 input from the temperature detecting means 29 is compared with preset temperature data. When it is determined that the data input in step 6 is high, the process proceeds to step 7 and the control means 30 causes the drive means 2 to stop the energization of the perspiration prevention heater 13.
Output to step 7 and return to step 6. When it is determined that the data input in step 6 is low, the process proceeds to step 8, the control unit 30 outputs the data to the drive unit 27 to energize the perspiration prevention heater 13, and the process returns to Step 6.

As described above, according to this embodiment, since the temperature detecting means 29 is built in the partition body 28, it becomes possible to energize the perspiration preventing heater 13 according to the change in the front temperature of the partition body 28. The front surface temperature of the partition body 28 can be maintained at the dew point temperature or higher, and can be suppressed to a temperature at which the human body is not damaged even if it is touched.

[0021]

As is apparent from the above embodiments, according to the present invention, the temperature detecting means for constantly detecting the front surface temperature of the partition is provided, and accordingly, the temperature data obtained from the temperature detecting means is responded to. As a result, the perspiration preventing heater can be energized to operate, the front surface temperature of the partition body can be maintained at the dew point temperature or higher, and the temperature can be suppressed to a temperature at which the human body is not damaged even if the human body touches it.

[Brief description of drawings]

FIG. 1 is a control circuit showing an embodiment of the present invention.

FIG. 2 is a perspective view of a refrigerator-freezer according to an embodiment of the present invention.

FIG. 3 is a front view of a heat insulating box of the refrigerator / freezer.

FIG. 4 is a sectional view of the essential parts of the refrigerator-freezer.

FIG. 5 is a sectional view of the main part of the door device of the refrigerator-freezer.

FIG. 6 is a flowchart showing an embodiment of the present invention.

FIG. 7 is a perspective view of a conventional refrigerator-freezer.

FIG. 8 is a front view of a heat insulating box of the refrigerator-freezer.

FIG. 9 is a sectional view of the main part of the refrigerator-freezer.

FIG. 10 is a sectional view of a main part of the door device of the refrigerator-freezer.

FIG. 11 is a control circuit showing a conventional example.

FIG. 12 is a flowchart showing a conventional example.

[Explanation of symbols]

 1 Refrigerator / Refrigerator Main Body 5 Insulation Box Body 5A Insulation Box Body Opening 6A Door 6B Door 8 Guide Part 8A Guide Part Protrusion 13 Perspiration Prevention Heater 28 Partition Body 29 Temperature Detecting Means 30 Control Means

Claims (1)

[Claims] 1. A first and second gannon-opening type door rotatably supported on both sides of the opening so as to close the opening of an insulating box having an opening, and the doors are provided at the peripheral edges of the back surfaces of both doors. The first door is rotatably supported by a gasket that abuts against the opening peripheral edge and a length that extends over the opening edge on the back surface of the non-pivotal side portion of the first door and extends in the rotation axis direction of the door. With the closing motion of the door, comes into contact with the protrusion of the guide portion formed on the opening edge portion located on the non-pivotal side of the both doors, and rotates and slides on the protrusion of the guide portion. It comprises a partition body having freely matching grooves, and the partition body incorporates a heating element and a temperature detecting means for detecting the temperature of the partition body, and responds to a temperature change of the partition body detected by the temperature detecting means. A door device for a refrigerator / freezer, comprising a control circuit for driving the heating element.