JP3228392B2 - Freezer refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator for controlling the temperature of a refrigerator using a thermostat with a baffle, and more particularly to a refrigerator having measures to prevent malfunctions due to freezing of the thermostat with a baffle. .

[0002]

2. Description of the Related Art A refrigerator, generally called a worktop type, is formed by dividing the inside of a refrigerator into upper and lower portions, and forming a refrigerator compartment in an upper stage, a freezing compartment in a middle stage, and a vegetable compartment in a lower stage. Heretofore, there has been known a refrigerator of this type in which the temperature of a refrigerator is adjusted using a thermostat with a baffle.

FIGS. 12 and 13 show an example of a conventional work-top refrigerator using a thermostat with a baffle. FIG. 12 is a schematic front view showing the inside of a refrigerator, and FIG. It is a schematic longitudinal section side view shown. In these figures, A is a refrigerator compartment, B is a freezer compartment, C is a vegetable compartment, D
Is a cooling room formed at the back of the freezing room B, and the cooling room D communicates with the freezing room B and the vegetable room C, respectively.

[0004] Behind the interior of the refrigerator between the cooling room D and the refrigerator compartment A, there is formed a refrigerator compartment cold air duct E1, which is a part of a first ventilation path E serving as a cool air passage from the refrigerator compartment D to the refrigerator compartment A. At the same time, a vegetable compartment cold air duct E2 is formed as a second ventilation path which serves as a passage for cold air from the refrigerator compartment A to the vegetable compartment C in the inside of the refrigerator between the refrigerator compartment A and the vegetable compartment C. . In the cooling room D, a cooler 1 and a cooling fan 2 for circulating cool air generated from the cooler 1 in the refrigerator are provided. In addition, a thermostat 3 with a baffle is provided in a cool room cool air duct E1. Have been.

[0005] The thermostat 3 with a baffle has a main body 3a.
The change in gas pressure previously sealed in the baffle 3b
Refrigerator A
The baffle unit 3b operates in accordance with the temperature of the refrigerator compartment detected by the temperature sensing unit 3c provided in the inside, and opens and closes the first ventilation path E. In FIG. 13, reference numeral 4 denotes a pressure-type thermostat normally installed in the freezer B, 5 denotes a compressor which is operated and stopped by the thermostat 4, and 6 denotes a fan which is operated and stopped in synchronization with the compressor 5. The motor 7 is an AC power supply.

When the temperature in the freezer compartment B rises above the set temperature, the thermostat 4 is turned on, the compressor 5 is operated, and the fan motor 6 is operated in synchronization with the operation. The cool air cooled by the cooler 1 by the fan motor 6 is sent to the freezing room B and the cool room cool air duct E1. The cool air sent to the cool room cool air duct E1 is discharged to the cool room A through the baffle portion 3b of the thermostat 3 with baffle.

At this time, the baffle is opened and closed by the temperature sensing portion 3c of the thermostat 3 with baffle installed so as to detect the temperature in the refrigerator compartment A, and the amount of cool air discharged to the refrigerator compartment A is adjusted. . The cold air discharged into the refrigerator compartment A exchanges heat with food in the refrigerator compartment A, and then is guided to the vegetable compartment C through the vegetable compartment cold air duct E2. The cold air guided to the vegetable room C exchanges heat with food in the vegetable room C, and then returns to the cooler 1.

A series of flows of cool air during the operation of the fan motor are indicated by arrows in FIGS. When the temperature in the freezer compartment B reaches the set temperature, the thermostat 4 is turned off, the compressor 5 is stopped, and the fan motor 6 is stopped in synchronism therewith. When the fan motor 6 stops, the cool air in the cooling room D flows out to the vegetable room C because of its large specific gravity. Further, since the cool air in the cooling chamber D has flowed out, the inside of the cooling chamber D has a negative pressure, and the air in the cooling chamber A is sucked from the direction of the cold air duct E1 through the thermostat 3 with baffles. As described above, when the fan motor 6 is stopped, natural convection occurs in a direction completely opposite to the flow of the cool air indicated by the arrow.

Therefore, while the fan motor 6 is stopped,
Since the humid air in the refrigerator compartment A flows back around the refrigerator compartment cool air duct E1 and the vicinity of the thermostat 3 with baffles, the refrigerator compartment cool air duct
Condensation forms on the surface of E1 and the surface of the thermostat 3 with baffles, and the condensed water droplets are cooled by the cool air during operation of the fan motor 6 and freeze. When such a series of operations is repeated, the freezing around the thermostat with baffle grows and hinders the normal operation of thermostat 3 with baffle. That is, the baffle portion 3b does not open even though the temperature of the thermosensitive portion 3c of the thermostat 3 with the baffle has risen, or the thermosensitive portion 3c does not open.
Despite the temperature of c being sufficiently lowered, the baffle unit 3b does not close or the refrigerator compartment A cannot be controlled normally.

[0010] By the way, it has already been found that the cause of such a problem is that the opening and closing operation of the thermostat 3 with baffle and the operation of the fan motor 6 are not synchronized. That is, when the temperature in the freezer compartment B is sufficiently low, that is, when the thermostat 4 is turned off, the compressor 5 is stopped, and the fan motor 6 is stopped in synchronization with the temperature, the thermostat with baffle 3 is turned off. Is controlled solely by the temperature of the temperature sensing section 3c, irrespective of the temperature in the freezer compartment B and the operating state of the fan motor 6, and the baffle section 3b is opened even when the fan motor 6 stops. For this reason, even when the fan motor is stopped, the baffle unit 3
When b is in the open state, the cool air circuit from the cooling room D to the refrigerator room A and the vegetable room C is in the open state, and natural convection occurs in a direction completely opposite to the flow of the cool air indicated by the arrow, This is the cause of the above-mentioned problem.

Conventionally, as means for solving such a problem, an electric damper capable of forcibly opening and closing the baffle portion 3b is used as an alternative to the thermostat 3 with a baffle, as disclosed in Japanese Patent Laid-Open No. 6-137737. As disclosed in Japanese Unexamined Patent Application Publication No. H11-264, when the compressor is stopped, that is, when the fan motor is stopped, the baffle is forcibly closed regardless of the temperature of the refrigerator compartment.
As disclosed in Japanese Patent Application Publication No. 15-158, regardless of the operation state of the compressor, that is, even when the compressor is stopped, if the refrigerator compartment temperature becomes equal to or higher than the set temperature and the baffle is opened, the fan is opened. A method of operating a motor is employed.

[0012]

However, any of the solutions disclosed in the above publications is based on the premise that an electric damper is used. However, the electric damper is compared with a thermostat with a baffle. In addition to significantly increasing the cost, the use of the electric damper requires a thermistor for detecting the temperature of the refrigerator compartment. For this reason, an electronic board having a microcomputer and a relay for instructing the electric damper to open and close in accordance with the thermistor temperature is separately required, and in addition to the cost difference between the thermostat with baffle and the electric damper, a very large cost increase is required. Become.

Further, according to any of the above prior art examples, a great increase in cost is required in order to enhance the reliability of the cooling air circuit, and the latter Japanese Patent Application Laid-Open No. 6-14 / 1994.
In a configuration in which the fan motor is operated while the compressor is stopped, as disclosed in Japanese Patent No. 7715,
This will promote the condensation of the gas refrigerant in the cooler when the compressor is stopped. That is, when the freezing compartment becomes a heat load, or when the cooler is not in a cooling state, the fan motor is operated, so that the fresh air returning from the refrigerating compartment through the vegetable compartment is directly discharged into the freezing compartment. As a result, an experiment has revealed that the cooling efficiency, that is, the power consumption is degraded by about 10% because the freezing compartment becomes a heat load.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and in a worktop type freezer-refrigerator, malfunctions are always caused by preventing malfunctions due to freezing around a baffle for controlling the temperature of a refrigerator. It is intended to provide a refrigerator-free refrigerator.

[0015]

SUMMARY OF THE INVENTION A refrigerator according to the present invention is divided into a refrigerator compartment, a freezer compartment and a vegetable compartment in order from the top of the refrigerator, and the refrigerator compartment is provided at the back of the freezer compartment. And a cooling chamber communicating with the vegetable compartment, and further providing a first ventilation path between the cooling chamber and the refrigerator chamber, and a second ventilation path between the refrigerator chamber and the vegetable chamber, respectively, A baffle for arranging a cooler and a cooling fan for circulating cool air generated from the cooler in the refrigerator, and opening and closing the first ventilation passage in the first ventilation passage according to the temperature of the refrigerator compartment. A thermo is provided.

According to a first technical means of the present invention, in order to achieve the above object, the thermostat with baffle is forcibly closed when the cooling fan is stopped, so that the baffle from the refrigerator compartment side Backflow prevention means for preventing backflow of cool air to the thermo side is provided.

The backflow preventing means includes, for example, a first
In addition, a heater is connected to the temperature sensing portion of the thermostat with baffle so as to be energized during operation of the cooling fan and not energized while the cooling fan is stopped. Secondly, an electronic cooling device is provided in the thermosensitive portion of the thermostat with baffle which is connected so as not to be energized during operation of the cooling fan and to be energized while the cooling fan is stopped.
Third, a first thermostat with a baffle is provided in a passage of cold air from the cooling chamber to the refrigerator compartment, and a second thermostat with a baffle is provided in an outlet of the cold air from the cooling chamber to the refrigerator compartment. Fourth,
A valve for closing the passage is provided in the passage of the cool air from the cooling room to the refrigerator compartment in accordance with the correlation between the wind pressure of the internal cooling fan and its own weight . Fifth
In, the baffle operation arm portion of the thermo baffled not energized during operation of the internal cooling fan, during the stop of the cooling fan, such as the provision of bimetallic lever which-connected heater is mounted for energizing A configuration can be given.

According to a second technical means of the present invention, in the refrigerator having the above-mentioned prerequisite, a ventilation opening is formed in a wall section separating the second ventilation path and the cooling chamber, and the ventilation opening is formed. An opening / closing valve that is closed by wind pressure when the cooling fan is in operation and is opened by its own weight when the cooling fan is stopped is attached to the section.

According to a third technical means of the present invention, in the refrigerator having the above-described premise, a dehumidifying device is provided in a ventilation path portion from the thermostat with baffle to the refrigerator compartment in the first ventilation path. I have. In this case, examples of the dehumidifying device include an electronic cooling device and a metal plate having a large heat capacity.

According to a fourth technical means of the present invention, in the refrigerator having the above-mentioned constitution, the thermostat with the baffle and the thermo-heating means for increasing the temperature in the vicinity thereof are provided when the cooling fan stops. . As the thermo-heating means, a thermo-baffle with a baffle is structurally used.
A ceramic heater connected to the cold air outlet to the refrigerator compartment in the ventilation path, or connected near the thermostat with baffle so that power is not supplied during operation of the cooling fan in the refrigerator but is supplied when the cooling fan is stopped And the like.

According to a fifth technical means of the present invention, in a refrigerator having the above-mentioned premise, a paint having an antifreezing function is applied to the surface of the thermostat with baffles.

[0022]

When the freezing room temperature reaches the set temperature and the cooling fan is stopped, the first technical means of the present invention forcibly closes the baffle of the baffled thermostat by the operation of the backflow prevention means. By doing so, since the refrigerator compartment and the refrigerator cold air duct and the refrigerator compartment are shut off, moist air from the refrigerator compartment side is not sucked into the thermostat side with the baffle.

In the second technical means, when the fan motor is operated, the on-off valve closes the second ventilation path and the cooling chamber by wind pressure, and when the fan motor stops, the cooling chamber moves from the refrigerator compartment to the vegetable compartment by its own weight. When the cooling air passage and the cooling chamber are opened, the cooling air in the cooling chamber flows out into the vegetable room, and the cooling chamber has a negative pressure, but the cold air flowing out from the second ventilation path into the vegetable room is directly sucked. Therefore, it does not inhale humid air from the refrigerator compartment through the thermostat with baffle from the direction of the first ventilation path.

According to the third technical means, when the fan motor is stopped, the cooling chamber, the first ventilation path, and the cooling chamber cannot be shut off, and the moist air is supplied from the refrigerator chamber to the thermostat side with the baffle. Even if inhaled, the dehumidifier is installed in front of the thermostat with baffle, so the humid air from the refrigerator compartment side is dehumidified just before the thermostat with baffle,
Do not breathe moist air into the thermo side with baffles.

According to the fourth technical means, when the fan motor is stopped, it is not possible to shut off the refrigerating chamber, the first ventilation path and the refrigerating chamber. Even when it is sucked, the temperature of the thermostat with baffle and the vicinity thereof rises due to the action of the thermoheating means, so that dew condensation and frost do not occur on the thermostat side with baffle.

In the fifth technical means, when the fan motor stops, the refrigerator compartment, the first ventilation path, and the cooling compartment cannot be shut off, and the moist air is supplied from the refrigerator compartment to the thermostat side with the baffle. Even if the water is sucked in and dew forms on the surface of the thermostat with baffle, the antifreeze paint is applied to the surface of the thermostat with baffle, so that the condensed water drops do not grow and do not hinder the operation of the thermostat with baffle.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. In the following embodiments, portions having the same configuration and operation as those of the conventional example shown in FIGS. 12 and 13 are denoted by the same reference numerals. FIG. 1 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a first embodiment of the present invention. As shown in this figure, the refrigerator-freezer of the present embodiment has a refrigerator compartment A, a freezer compartment B, and a vegetable compartment C in order from the top in the refrigerator.
A cooling room D communicating with the freezing room B and the vegetable room C is formed at the back of the room.

Behind the inside of the refrigerator between the cooling room D and the refrigerator room A, there is formed a refrigerator room cold air duct E1, which is a part of the first ventilation path E serving as a cool air passage from the refrigerator room D to the refrigerator room A. At the same time, a vegetable room cold air duct E2 is formed as a second ventilation path, which serves as a passage for cold air from the refrigerator room A to the vegetable room C, inside the refrigerator between the refrigerator room A and the vegetable room C.

In the cooling chamber D, a cooler 1 and a cooling fan 2 for circulating cool air generated from the cooler 1 in the refrigerator.
And a thermostat 3 with a baffle is disposed in the first ventilation path below the cold room cold air duct E1. 4 is a pressure thermostat installed in the freezer B, 5
Is a compressor which is operated and stopped by the thermostat 4, 6 is a fan motor which is operated and stopped in synchronization with the compressor 5, and 7 is an AC power supply.

When the temperature in the freezer B rises above the set temperature, the thermostat 4 is turned on, the compressor 5 is operated, and the fan motor 6 is operated in synchronism therewith. The cool air cooled by the cooler 1 by the fan motor 6 is sent to the freezing room B and the cool room cool air duct E1. The cool air sent to the cool room cool air duct E1 is discharged to the cool room A through the baffle portion 3b of the thermostat 3 with baffle.

At this time, the baffle is opened and closed by the temperature sensing part 3c of the thermostat 3 with the baffle installed so as to detect the temperature in the refrigerator compartment A, and the amount of cool air discharged to the refrigerator compartment A is adjusted. . The cold air discharged into the refrigerator compartment A exchanges heat with food in the refrigerator compartment A, and then is guided to the vegetable compartment C through the vegetable compartment cold air duct E2. The cold air guided to the vegetable room C exchanges heat with food in the vegetable room C, and then returns to the cooler 1.

In such a configuration, in this embodiment,
In the vicinity of the thermosensitive part 3c of the thermostat 3 with baffle, the thermosensitive part 3c of thermostat 3 with baffle and the heater 8 as a backflow prevention means connected in parallel with the fan motor 6 are provided.

The thermostat 3 with a baffle is configured to convert a change in gas pressure previously sealed in the main body 3a into an opening / closing operation of the baffle 3b. The baffle unit 3b operates according to the temperature of the refrigerator compartment detected by the temperature sensing unit 3c communicating with the refrigerator compartment 3a, and opens and closes the first ventilation path E including the refrigerator compartment cool air duct E1. More specifically, the thermostat 3 with baffles is, for example, 2
The gas pressure of the temperature sensing part 3c is set so that the baffle is fully opened at 0 ° C. and the baffle is fully closed at 15 ° C. In addition,
In this state, the temperature of the refrigerating compartment is adjusted to 15 ° C. to 20 ° C.
Since c is about 12 ° C. higher than the refrigerator temperature, the refrigerator temperature can be adjusted to 3 ° C. to 8 ° C.

In the above configuration, when the compressor 5 is stopped and the fan motor 6 is stopped in synchronism therewith,
The heater 8 is turned off, and the temperature sensing part 3 of the thermostat 3 with baffle is turned off.
c drops to 3 ° C. to 8 ° C., which is the same as the refrigerator compartment temperature, and the baffle part 3b is fully closed. In this way, when the fan motor 6 is stopped, the temperature sensing part 3c of the thermostat 3 with baffle is not forcibly heated , so that the baffle part 3b is forcibly closed so that the refrigerating chambers A and The first ventilation path E including the refrigerator compartment cold air duct E1 and the cooling compartment D are shut off, so that moist air from the refrigerator compartment side is not sucked into the baffle thermostat 3 side, and condensation on the baffle thermostat 3 is prevented.
Freezing can be prevented.

FIG. 2 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a second embodiment of the present invention. As shown in this figure, the refrigerator-freezer of the present embodiment is connected so that electricity is supplied when the fan motor 6 stops, instead of the heater 8 attached near the temperature sensing part 3c of the first embodiment. An electronic cooling device 9 is provided. In the thermostat 3 with baffle, the gas pressure of the temperature sensing part 3c is set so that the baffle is fully opened at 8 ° C. and the baffle is fully closed at 8 ° C., for example, as in the first embodiment. 3 ℃ ~
It is adjusted to 8 ° C. The other configuration of this embodiment is the same as that of the first embodiment.

In the above configuration, when the compressor 5 is stopped and the fan motor 6 is stopped in synchronism therewith,
The electronic cooling device 9 is energized, and the temperature sensing portion 3c of the thermostat 3 with baffle is cooled to a temperature considerably lower than the refrigerator compartment temperature.
The baffle part 3b is fully closed. When the fan motor 6 is stopped, the baffle is forcibly closed to shut off the first ventilation path E including the refrigerating room A and the refrigerating room cold air duct E1, and the refrigerating room D. Humid air can be prevented from being sucked into the thermostat 3 with baffles, and dew condensation and freezing on the thermostat 3 with baffles can be prevented.

FIG. 3 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a third embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
As in the case of the first embodiment, the first portion below the cold room cold air duct E1 is provided.
In addition to the first thermostat 3 with baffle installed in the ventilation passage E, a thermostat 11 with second baffle installed at the cold air outlet 10 of the cold air duct E1 to the cold room A is provided. The temperature sensing part 11a of the thermostat 11 with two baffles is the first
The air passage E is provided at an intermediate portion between the first thermostat 3 with baffle and the second thermostat 11 with baffle.

The gas temperature of the temperature sensing section 3c is set so that the first thermostat 3 with baffle operates to open the baffle fully at 8 ° C. and fully close the baffle at 8 ° C. in the same manner as in each of the above embodiments. The room temperature is adjusted to 3 ° C to 8 ° C. on the other hand,
The thermostat 11 with the second baffle is set to operate at a lower temperature than the thermostat 3 with the first baffle, and the relationship between the temperature and the operation of the baffle is reversed with respect to the thermostat 3 with the first baffle. Have been. For example, the gas pressure of the temperature sensing part 25 is set so that the baffle operates fully open at −5 ° C. or lower and the baffle fully closes at 0 ° C. or higher.

Temperature sensing part 11a of the second thermostat 11 with baffle
The baffle is always fully opened during operation of the fan motor 6 because the boiler is installed in the refrigerator compartment cool air duct E1 from the refrigerator compartment D, and the refrigerator compartment temperature is adjusted only by the first thermostat 3 with baffle. The other configuration of this embodiment is the same as that of each of the above embodiments.

In the above configuration, when the compressor 5 is stopped and the fan motor 22 is stopped in synchronism therewith, no cool air is sent from the cooling chamber D to the refrigerating chamber A. The temperature of the temperature sensing portion 11a rises rapidly, and the baffle of the second thermostat 11 with baffle is forcibly fully closed. When the fan motor is stopped, regardless of the thermostat 3 with first baffle, the refrigerator compartment A In addition, the first ventilation path E and the cooling chamber D are shut off, so that humid air is not sucked into the thermostat side with the first baffle from the refrigerator compartment side, and dew condensation and freezing on the thermostat 3 with the first baffle can be prevented. it can.

FIG. 4 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a fourth embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
A lightweight valve 12 is provided in a first ventilation path from the thermostat 3 with baffle toward the cooling chamber D. When the fan motor 6 is operated, the first ventilation path through which cool air passes by wind pressure is opened, and the fan motor 6 is opened. When stopped, the first ventilation path is closed by its own weight. Thus, when the fan motor 6 stops,
By forcibly closing the baffle, the first ventilation path E and the cooling chamber D are shut off, so that moist air from the refrigerating chamber side can be prevented from being sucked into the baffled thermo side. The other configuration of this embodiment is the same as that of each of the above embodiments.

FIG. 5 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a fifth embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
A lever 13 made of a bimetal material is attached to a wall portion of the first ventilation path E, and a free end of the lever 13 is brought into contact with an arm 3d extending from a main body 3a of the thermostat 3 with a baffle. The heater 14 is connected near the fan motor 6, and the heater 14 is connected so as to be energized when the fan motor 6 is stopped. The other configuration of this embodiment is the same as that of each of the above embodiments.

In the above configuration, during operation of the fan motor 6, the lever 13 is deformed so as not to hinder the operation of the thermostat 3 with a baffle. However, when the fan motor 6 is stopped, the heater 14 is energized to thereby heat up. The lever 13 is deformed so as to close the baffle portion 3b of the thermostat 3 with baffle. As described above, when the fan motor 6 stops, the baffle is forcibly closed, thereby shutting off the cooling room cold air duct E1 and the cooling room D, and humid air from the refrigerator room side to the baffle thermo side. You can prevent inhalation.

FIG. 6 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a sixth embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
A ventilation opening 16 is formed in a wall 15 that partitions the cooling room D and the vegetable room cold air duct E2.
Is installed. In this case, when the fan motor 6 is operated, the on-off valve 17 operates to shut off the cooling room D and the vegetable room cool air duct E2 by wind pressure, and cool air is sent to the refrigerator room A through the cool room cold air duct E1. The fan motor 6
Stops, the on-off valve 17 is opened by its own weight, and operates so as to directly connect the cooling room D and the vegetable room cold air duct E2.

The cooling room D and the vegetable room cold air duct E2 are directly connected, so that the cool air in the cooling room flows out to the vegetable room C.
This creates a negative pressure in the cooling chamber, but the vegetable compartment cool air duct
Since the cold air circuit is configured to directly inhale the cold air flowing out from E2 into the vegetable compartment C, the moist air is not sucked from the refrigerator compartment A from the direction of the refrigerator cold air duct E1, that is, to the thermo side with the baffle. Dew condensation and freezing on the attached thermo 3 can be prevented. The other configuration of this embodiment is the same as that of each of the above embodiments.

FIG. 7 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a seventh embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
An electronic cooling device 18 as a dehumidifying device connected so as to be energized when the fan motor 6 is stopped is provided in a ventilation path portion from the installation portion of the thermostat 3 with baffle to the refrigerator compartment A in the first ventilation path E. ing. The other configuration of this embodiment is the same as that of each of the above embodiments.

In the above configuration, when the fan motor 6 stops, no measures are taken to forcibly close the cool air circuit, so that moist air is sucked from the refrigerator compartment A into the thermostat side with the baffle. Electronic cooling device 1 in one ventilation path E
8, the amount of dew condensation and freezing on the thermostat 3 with baffles can be extremely reduced. That is, the electronic cooling device 18 is energized when the fan motor 6 is stopped and humid air is sucked from the refrigerator compartment to the thermostat side with the baffle, whereby the humid air sucked from the refrigerator compartment A is supplied to the thermostat 3 with the baffle. It will be dehumidified in the foreground.

As another dehumidifying device, as shown in FIG. 8, a device using a metal plate 19 having a large heat capacity can be used. In this case, the refrigerator compartment A is located on the thermo side with the baffle.
When the moist air is sucked from the metal plate 19, the temperature of the metal plate 19 is always lower than that of the thermostat 3 with baffles because the heat capacity of the metal plate 19 is large. Therefore, most of the moisture of the humid air is condensed on the metal plate 19 and dehumidified.

FIG. 9 shows a worktop type refrigerator-freezer using a thermostat with baffles according to an eighth embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment,
Baffle thermostat 3 is connected to cold air outlet 1 of cold air duct E1
0. In this case, when the fan motor 6 is stopped, no measures are taken to forcibly close the cool air circuit, so that humid air is sucked from the refrigerator compartment A. When the fan motor 6 is stopped, the temperature immediately rises to about the room temperature of the refrigerator compartment A when the fan motor 6 is stopped. For this reason, even if the moist air is sucked in from the refrigerator compartment A, dew condensation and freezing around the thermostat with baffle can be prevented. The other configuration of this embodiment is the same as that of each of the above embodiments.

FIG. 10 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a ninth embodiment of the present invention. As shown in this drawing, in the refrigerator of the present embodiment, a ceramic heater 20 connected so as to be energized when the fan motor 6 is stopped is provided near the thermostat 3 with the baffle.

In this case, when the fan motor 6 stops, no measures are taken to forcibly close the cool air circuit, so that moist air is sucked from the refrigerator compartment A.
The ceramic heater 20 installed in the vicinity of the thermostat 3 with baffle is energized and the temperature rises.
Do not freeze. Moreover, since the thermostat 3 with a baffle is usually covered with a heat insulating material so as not to sense temperature in the main body 3a,
It is necessary to pay attention to safety when installing a heater around a thermostat with a baffle. In general, by using a ceramic heater 20 having an overheating prevention property as a heater,
There is an advantage that it is not necessary to take excessive measures for safety. The other configuration of this embodiment is the same as that of each of the above embodiments.

FIG. 11 shows a worktop type refrigerator-freezer using a thermostat with baffles according to a tenth embodiment of the present invention. As shown in this figure, in the refrigerator of the present embodiment, a paint 21 having an antifreezing function is applied to the surface of the thermostat 3 with a baffle. In this case, the fan motor 6
Is stopped, no measures are taken to forcibly close the cool air circuit, so that moist air is sucked from the refrigerator compartment A and dew forms on the surface of the thermostat 3 with baffles.

Since the antifreeze paint 21 is applied to the surface of the thermostat 3 with baffle, it is possible to avoid the phenomenon that water droplets condensed on the surface of the thermostat 3 with baffle freeze and grow. Therefore, even if the operation and the stop of the fan motor 6 are repeated, the operation of the thermostat 3 with baffle is not obstructed. The other configuration of this embodiment is the same as that of each of the above embodiments.

[0054]

[0055]

As described above, according to the present invention,
When the freezer temperature reaches the set temperature and the cooling fan
When the cooling fan is operated, a ventilation opening is formed in a wall section that separates the second ventilation path and the cooling chamber, and the ventilation opening is closed by the wind pressure during operation of the cooling fan. Since the on-off valve is opened by its own weight while the fan is stopped, the on-off valve closes the second ventilation passage and the cooling chamber by wind pressure when the cooling fan is operated, and stops the cooling fan. If the second ventilation path and the cooling chamber are opened by their own weight, the cool air in the cooling chamber flows out into the vegetable chamber, and the cooling chamber has a negative pressure. Therefore, the cool air flowing into the vegetable compartment acts so as to be directly sucked, so that moist air is not sucked from the refrigerator compartment through the thermostat with the baffle from the direction of the first ventilation path. Therefore, dew condensation and freezing around the baffled thermostat can be prevented, and a cold air circuit using the baffled thermostat with high long-term reliability can be provided.

[0056]

According to a second aspect of the present invention , when the temperature of the freezing room reaches the set temperature and the cooling fan is stopped, the baffle of the baffled thermostat is forcibly activated by the function of the electronic cooling device provided in the thermosensitive portion of the baffle thermostat. By closing it,
In order to shut off the cold room and the cold room duct and the cold room,
Since moist air is not sucked into the thermostat side with the baffle from the refrigerating compartment side, dew condensation and freezing around the thermostat with the baffle can be prevented, and a long-term reliable cold air circuit using the thermostat with the baffle can be provided.

In the third aspect , when the temperature of the freezing room reaches the set temperature and the cooling fan is stopped, the thermostat with the second baffle provided at the cool air outlet from the cooling room to the refrigerator compartment is closed. Since the cold room and the cold air duct of the cold room and the cold room are shut off, moist air from the cold room is not sucked into the thermo side with baffle, so condensation and freezing around the thermo with baffle can be prevented, and a long-term reliable baffle A cold air circuit using the attached thermostat can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic vertical sectional side view showing a main part of a worktop type refrigerator-freezer using a thermostat with a baffle according to the present invention together with an electric circuit in a first embodiment.

FIG. 2 is a schematic vertical sectional side view showing a main part of the second embodiment together with an electric circuit.

FIG. 3 is a schematic vertical sectional side view showing a main part of the third embodiment together with an electric circuit.

FIG. 4 is a schematic vertical sectional side view showing a main part of the fourth embodiment together with an electric circuit.

FIG. 5 is a schematic vertical sectional side view showing a main part of the fifth embodiment together with an electric circuit.

FIG. 6 is a schematic longitudinal sectional front view showing a main part of the sixth embodiment.

FIG. 7 is a schematic longitudinal sectional side view showing a main part of the seventh embodiment together with an electric circuit.

FIG. 8 is a schematic vertical sectional side view showing a configuration provided with a dehumidifier having a different configuration.

FIG. 9 is a schematic vertical sectional side view showing a main part of the eighth embodiment together with an electric circuit.

FIG. 10 is a schematic vertical sectional side view showing a main part of the ninth embodiment together with an electric circuit.

FIG. 11 is a schematic vertical sectional side view showing a main part of the tenth embodiment together with an electric circuit.

FIG. 12 is a schematic front view showing the inside of a refrigerator of a worktop type refrigerator using a conventional thermostat with baffles.

FIG. 13 is a schematic vertical sectional side view showing a main part thereof together with an electric circuit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cooler 2 Cooling fan 3 Thermostat with baffle 3b Baffle part 3c Temperature sensing part 4 Pressure type thermostat 5 Compressor 6 Fan motor 8 Heater 9 Electronic cooling device 10 Cold air outlet 11 Second thermostat with baffle 11a Temperature sensing part 12 Valve 13 Lever 14 Heater 15 Wall 16 Ventilation opening 17 Opening / closing valve 18 Electronic cooling device 19 Metal plate 20 Ceramic heater 21 Paint A Cold storage room B Freezing room C Vegetable room D Cooling room E 1st ventilation path E1 Cold room cold air duct E2 Vegetable room cold air Duct (second ventilation path)

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-6-147715 (JP, A) JP-A-6-137737 (JP, A) JP-A-62-266378 (JP, A) 167981 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F25D 17/08 312 F25D 17/08 308 F25D 23/00 306

Claims (3)

(57) [Claims] 1. A refrigerator is divided into a refrigerator compartment, a freezer compartment, and a vegetable compartment in order from the top, and a cooling compartment communicating with the freezer compartment and the vegetable compartment is formed at the back of the freezer compartment. A first ventilation path is provided between the cooling chamber and the refrigeration chamber, and a second ventilation path is provided between the refrigeration chamber and the vegetable chamber, respectively, while a cooler is provided in the cooling chamber and cold air generated from the cooler is provided in the refrigerator. A refrigerator having a cooling fan for circulating, and a thermostat with a baffle for opening and closing the first ventilation path in accordance with the temperature of the refrigerator compartment in the first ventilation path; (2) A ventilation opening is formed in a wall section defining the ventilation path and the cooling chamber, and the ventilation opening is closed by wind pressure during operation of the cooling fan and opened by its own weight while the cooling fan is stopped. A refrigerator-freezer equipped with an on-off valve. 2. The interior of the refrigerator is divided into a refrigerator compartment, a freezer compartment and a vegetable compartment in order from the top, and a cooling compartment communicating with the freezer compartment and the vegetable compartment is formed at the back of the freezer compartment. A first ventilation path is provided between the cooling chamber and the refrigeration chamber, and a second ventilation path is provided between the refrigeration chamber and the vegetable chamber, respectively, while a cooler is provided in the cooling chamber and cold air generated from the cooler is provided in the refrigerator. A refrigerator comprising: a cooling fan for circulating; and a thermostat with a baffle that opens and closes the first ventilation path in accordance with a temperature of a refrigerator in the first ventilation path. By providing an electronic cooling device that is not energized during the operation of the cooling fan and is connected so as to be energized while the cooling fan is stopped, the thermo sensor with the baffle is stopped when the cooling fan is stopped. Forced closed state from the refrigerator compartment side A refrigerator having a baffle for preventing cold air from flowing back to a thermo side. 3. The refrigerator is divided into a refrigerator compartment, a freezer compartment, and a vegetable compartment in order from the top, and a cooling compartment communicating with the freezer compartment and the vegetable compartment is formed at the back of the freezer compartment. A first ventilation path is provided between the cooling chamber and the refrigeration chamber, and a second ventilation path is provided between the refrigeration chamber and the vegetable chamber, respectively, while a cooler is provided in the cooling chamber and cold air generated from the cooler is provided in the refrigerator. A refrigerator having a cooling fan for circulating, and a thermostat with a baffle for opening and closing the first ventilation path in accordance with the temperature of the refrigerator compartment in the first ventilation path; A thermostat with a second baffle is provided at a cold air outlet to the refrigerator compartment of the one ventilation path, and a temperature sensing part of the thermostat with the second baffle is installed in the first ventilation path, and when the cooling fan is stopped, 2 Close the thermostat with baffle and baffle from the refrigerator compartment side A refrigerator which prevents cold air from flowing back to the thermo side.