JPH051986U - Cooling system - Google Patents

Abstract

(57) [Summary] [Purpose] The temperature inside the refrigerator can be raised by a simple method due to the entry of outside air when the refrigerator door is opened and closed. [Structure] An air curtain formed by cold air is formed at a door opening of a refrigerator by controlling a blowing direction of cold air blown from a cooling device by a detection unit that detects opening of a door. [Effect] The air curtain of the cold air formed in the door opening can prevent the outside air from entering the inside of the refrigerator and prevent the temperature inside the refrigerator from rising.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a cooling device that changes a blowing direction of cool air from a cooling device in association with opening and closing of a refrigerator door.

[0002]

[Prior Art]

 FIG. 4 is a cutaway side view of a refrigerator equipped with a conventional cooling device disclosed in, for example, Japanese Utility Model Publication No. 63-37658. Reference numeral 1 is a refrigerator, 2 is a door for opening and closing the refrigerator 1, and 3 is a refrigerator. The cooling device is installed on the ceiling 1a of No. 1, and the compressor 4, the condenser 5, and the cooler 6 are connected by a refrigerant pipe (not shown) to form a refrigeration cycle. Reference numerals 7 and 8 denote blowers for the condenser 5 and the cooler 6, respectively, 9 denotes an air passage for the cooler 6, and a cooler chamber for preventing heat from entering from the outside of the refrigerator, and 10 denotes a cool air blowing duct. It

Next, the operation will be described. In general, the causes of fluctuations in the refrigerator internal temperature are fluctuations in the internal refrigerator load, intrusion of outside air into the refrigerator, and rises in the refrigerator internal temperature during defrosting.

With respect to the fluctuation of the in-compartment load, control is performed to keep the in-compartment temperature constant by turning the compressor 4 on and off, and a condenser is used for increasing the in-compartment temperature during defrosting. By stopping the blower 7 of No. 5, the rise of the temperature inside the refrigerator was suppressed.

Further, the cause of the temperature rise in the refrigerator due to the invasion of outside air is that the high temperature outside air enters the inside of the refrigerator by opening the door 2 of the refrigerator 1. Therefore, the door 2 is generally opened and closed. The number of doors is reduced and the door 2 is doubled.

[0006]

[Problems to be solved by the device]

 The conventional cooling device is configured as described above, and even if the number of times of opening and closing the door can be limited to some extent to suppress the rise in the temperature inside the refrigerator, if the time for opening and closing one door is long, It is not a solution to the problem. In addition, there is a problem in that the doubled door increases the cost accordingly.

The present invention has been made in order to eliminate the above problems, and an object thereof is to obtain a cooling device capable of eliminating a rise in temperature inside a refrigerator due to opening and closing of a door with a simple configuration. To do.

[0008]

[Means for Solving the Problems]

 A cooling device according to the present invention is a cooling device installed on a ceiling part of a refrigerator, wherein a detection unit that is turned on and off by opening and closing a door of the refrigerator, and a cool air from the cooling device that operates in cooperation with the detection unit. It is composed of a damper that changes the blowing direction and a motor that drives this damper.

[0009]

[Action]

 In this invention, the detector is turned on when the door is opened, and the motor is interlocked with the detector to change the cool air blowing direction of the damper so that the cool air curtain flows through the refrigerator door opening. Therefore, it is possible to suppress the invasion of outside air into the refrigerator.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cutaway side view of a refrigerator equipped with a cooling device according to the present invention. Reference numerals 1 to 9 are the same as those of the conventional cooling device described in FIG. . Reference numeral 11 is a cool air blowing duct, and 12 and 13 are a first damper and a second damper that form part of the blowing duct 11 and that can be opened and closed.

2 and 3 are a partially cutaway plan view and a sectional view showing the details of the blowing duct 11, and the first damper 12 is provided on a side portion of the blowing duct 11 and is opened and closed by a motor 14. . The second damper 13 is composed of a plurality of dampers that open and close the bottom of the blowing duct 11, and each damper 13 is driven to open and close by being interlocked by a motor 15 provided therein. In FIG. 1, reference numeral 16 is a switch that detects the opening and closing of the door 2 and sends a signal to the motors 14, 15.

Next, the operation will be described. When the door 2 of the refrigerator 1 is closed, the contact of the switch 16 attached to the upper part of the door 2 is closed, and the first damper 12 is closed and the second damper 13 is opened in FIG. A signal is sent from the switch 16 to the motors 14,15. As a result, the cold air from the cooling device is vertically blown out from the opened second damper 13 into the refrigerator.

On the other hand, when the door 2 of the refrigerator 1 is opened, the contact of the switch 16 on the upper part of the door 2 is opened, so that the second damper 13 is closed and the first damper 12 is opened in FIG. Signal is sent from the switch 16 to the motors 14 and 15. As a result, the cool air from the cooling device flows from the first damper 12 opened as shown by the arrow along the ceiling 1a of the refrigerator 1 as shown in FIG. 1, and from here it bends along the front wall of the refrigerator 1. It flows and becomes an air curtain at the opening of the door 2. Therefore, the outside air does not enter the refrigerator 1 by forming the air curtain of cold air in the door opening.

[0014]

[Effect of the device]

 As described above, according to the present invention, the cold air from the cooling device is guided by the variable damper as the refrigerator door is opened, and the air curtain is formed at the door opening. The temperature inside the refrigerator can be raised by opening and closing the door with a simple structure without being blocked by the curtain and entering the refrigerator.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a refrigerator having a cooling device according to an embodiment of the present invention.

FIG. 2 is a partially cutaway plan view of the cooling device.

FIG. 3 is a cross-sectional view of an outlet duct of the cooling device.

FIG. 4 is a cutaway side view of a refrigerator having a conventional cooling device.

[Explanation of symbols]

 1 Refrigerator 2 Door 3 Cooling device 4 Compressor 5 Condenser 6 Cooler 7, 8 Blower 11 Blow-out duct 12 First damper 13 Second damper 14, 15 Motor 16 Switch

Claims (1)

Claims for utility model registration: Claims: 1. A cooling device installed on a ceiling of a refrigerator, wherein a detection unit that is turned on and off by opening and closing a door of the refrigerator, and the cooling unit that works in conjunction with the detection unit. A cooling device comprising a damper for varying the direction of blowing cold air from the device, and a motor for driving the damper, wherein an air curtain of cold air flows through the door opening of the refrigerator when the door is opened. .