JPS61262577A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a refrigerator in which an inner box is provided with cooling pipes for heat exchange.

2. Description of the Related Art Conventionally, in small household refrigerators, the cooling pipe as an evaporator is bent in a meandering manner and is installed inside the refrigerator's inner box wall on the side of the insulating box body, which covers a wide cooling surface. It is considered to obtain.

Hereinafter, the above-mentioned conventional refrigerator will be explained with reference to FIGS. 3 and 4.

1 is the main body of the refrigerator, which includes an outer box 2 and an inner box 3, and an inner box 3 and an outer box 2.
It is composed of a heat insulating material 4 filled in between. Reference numeral 6 denotes a partition wall that divides the inside of the inner box 3 into a freezing chamber 6 and a refrigerating chamber 7. Said freezer compartment6. The wall of the refrigerator compartment 7 is provided with a cooling pipe 8 for the refrigerator compartment and a cooling pipe 9 for the freezer compartment, which meander in the vertical direction. Said cooling pipe8. The cooling pipes 9 are connected to form one cooler having different temperatures.

Reference numeral 11 denotes a temperature sensing section that controls the operation and stop of the compressor 1o, which detects and controls the temperature of the cooling pipe 8 in the refrigerator compartment. Then, the temperature controller 12 is operated by the temperature sensor 11, and the compressor 10
stops. At the same time as the compressor 10 stops, the refrigerator compartment 7
The defrosting heater 13 is energized to defrost the inner box surface 14 of the refrigerator compartment 7.

Problems to be Solved by the Invention However, in the above configuration, when the compressor 1° is stopped, a large amount of the relatively low temperature refrigerant in the cooling pipe 9 of the freezer compartment 6 flows back into the cooling pipe 8 of the refrigerator compartment, causing Only the inner box surface 14 of the chamber 7, especially the outlet section 8b of the refrigerator cooling pipe 8, is supercooled and the defrosting action is inhibited, so frost remains and the cooling operation continues, and if this phenomenon occurs repeatedly. , the frost grows larger,
This is a quality problem.

In view of the above-mentioned problems, the present invention prevents refrigerant backflow at the time of compression i, prevents local frost residue, and performs a normal cooling cycle.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a cooling pipe arranged on the heat insulating material side of the inner box, in which the heat mass and internal temperature are transferred to the outlet of the cooling pipe of the refrigerator compartment. It is provided with a temperature sensing part for adjustment.

Effect: With the above configuration, the present invention prevents local overcooling of the inner box wall surface facing the outlet portion of the cooling pipe of the refrigerator compartment and prevents frost formation on the inner box surface when the compressor is stopped. becomes.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

1 is the refrigerator body, 2 is the outer box, 3 is the inner box, 4 is the insulation material,
6 is a partition wall, 6 is a freezer compartment, 7 is a refrigerator compartment, 8 is a refrigerator compartment cooling pipe, 9 is a freezer compartment cooling pipe, 10 is a compressor, and 13 is a defrosting heater.

Since the configuration is the same as that of the conventional example shown in FIG. 4, detailed explanation thereof will be omitted.

The refrigerant flows from the inlet side 8a of the cooling pipe 8 of the refrigerator compartment and is connected to the cooling pipe 9 of the freezer compartment at the outlet 8b of the cooling pipe of the refrigerator compartment, but it is opposite to the outlet part 8b of the cooling pipe 8 of the refrigerator compartment. A heat sensitive part 15 is provided on the inner box surface 14.

The heat sensitive section 16 detects the temperature of the outlet section 8b of the cooling pipe 8 of the refrigerator compartment by heat conduction of the thermal mass 16 provided on the inner surface 14 of the inner box. The temperature regulator 17 of the heat sensitive section 16 controls the operation and stop of the compressor 1o, and also controls the operation and stop of the compressor 1o.
At the same time as the o is stopped, the defrosting heater is energized to defrost the defrost.

Therefore, when the compressor 1o is stopped in the cooler 8, the temperature of the outlet pipe 8b where the temperature rises slowly is detected, so that no frost remains.

Effects of the Invention As described above, the present invention provides a heat-sensitive section in the outlet pipe, which is located at the location where the temperature rises slowest when the compressor is stopped, in the refrigerator compartment cooler. This prevents frost from remaining on the surface.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the inner box of a refrigerator according to an embodiment of the present invention as seen from the back side, Fig. 2 is a sectional view of the refrigerator shown in Fig. 1, and Fig. 3 is a perspective view of the inner box of a conventional refrigerator as seen from the back side. FIG. 4 is a cross-sectional view of the refrigerator shown in FIG. 3. 8... Refrigerator room cooling pipe, 9... Freezer room cooling pipe, 10... Compressor, 16...
Heat sensitive part, 16... thermal mass, 17... temperature controller. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
Inner box tS-S combustion section/6--Thermal mass No. 1 Figure 11-Temperature control 58-
The cooling pipe in the cooling storm room.The cooling pipe in the cooling room.Figure 2.Figure 3.

Claims (1)

[Claims] It consists of an outer box, an inner box, a heat insulating material filled between the two boxes, and a freezer compartment and a refrigerator compartment defined by a partition wall, and is provided in the inner box forming the freezer compartment and the refrigerator compartment. A refrigerator in which cooling pipes are connected to each other, a thermal mass is disposed at an outlet of the cooling pipe located on the side of the refrigerator compartment, and a heat-sensitive part of a temperature regulator is provided.