JP3378470B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the in-storage temperature of a switching room to reach the set temperature quickly, by providing a refrigerator with an exclusive fan which sends the air form a cooler to the switching room capable of switching the set temperature. SOLUTION: An exclusive fan is usually rotated at a fixed speed, and in case that the setting temperature of a switching room is switched, the number of its revolutions is increased or decreased, and after a certain time, it is returned to the former fixed number of revolutions. At this time, the chill sucked in from a suction port flows in an inflow port 94 through an exclusive fan 96. Then, if a baffle 106 for a storeroom is open, the chill is sent from a blowoff port 102 for a storeroom to the storeroom. Moreover, if the baffle 109 for a switching room is open, the chill flows from an inflow duct 94 to a propagation duct 104, and the chill is sent from the blowoff port 38 for a switching room to the switching room. Hereby, the in-storage temperature of the switching room can be lowered quickly by raising the revolution of the exclusive fan 96 for a certain time thereby increasing the quantity of inflow of the chill.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator having a switching chamber capable of switching a set temperature in a temperature range from a freezing temperature to a vegetable room temperature.

[0002]

2. Description of the Related Art Conventional refrigerators only have rooms such as a refrigerating room, a freezing room, and a vegetable room that maintain the internal temperature at a specific temperature. However, recent refrigerators have a room other than these rooms. Some have a switching chamber that can switch the temperature in the refrigerator from the temperature in the vegetable compartment to the freezing temperature.

In order to control the internal temperature of the switching chamber to a set temperature, an opening / closing member for the switching chamber, that is, a damper device having a baffle is provided, and the inflow of cold air is shut off by closing the baffle. At the same time, the temperature is controlled by a cooling fan that rotates at a constant rotation speed in the freezer.

[0004]

However, the above switching room has the following problems.

First, there is a problem that when the set temperature of the switching chamber is changed, it takes time to reach the set temperature.

Secondly, since the cool air is blown only by controlling the cooling fan of the freezing compartment, there is a problem that it is difficult to form a room in a temperature zone different from that of the freezing compartment.

Thirdly, there is a problem that the internal temperature of the switching chamber may vary.

Fourthly, since the damper device controls the temperature, the frequency of opening and closing the baffle increases depending on the method of use, and the reliability is impaired.

In view of the above problems, the present invention provides a refrigerator capable of quickly reaching the set temperature in the switching chamber and maintaining a stable internal temperature. .

[0010]

A refrigerator according to claim 1 comprises a refrigeration cycle including a compressor, a cooler, etc., a fan for blowing cold air cooled by the cooler, a freezing temperature to a refrigerating room temperature or a vegetable room. In a refrigerator having a switching chamber capable of switching a set temperature in a temperature zone and a refrigerating chamber above the cooling chamber, a cooling space in which the cooler and the cooler fan are arranged is provided, and the switching chamber and the between the cooler is provided cooling space is provided with a damper device having a closing member for the switching chamber, the damper device is cold the side
An inlet for cool air from the cooling fan is provided, and a refrigerating room is provided on the top surface.
A refrigerating room duct for sending cold air is provided, and a switching room is located in the front
In addition to the cooling fan, a fan dedicated to blowing the cool air from the cooler to the switching chamber is provided laterally inside the damper device in addition to the cooling fan. is there.

The refrigerator of claim 2 is a compressor and a cooling device.
Refrigeration cycle consisting of a cooler and the cooler
A cooling fan that blows the rejected cool air and cools it from the freezing temperature.
The set temperature can be switched in the temperature range of the storage room temperature or the vegetable room temperature.
In a refrigerator having an effective switching chamber, the cooler and the
A cooling space provided with a cooling fan is provided, and the switching chamber and
Between the cooling space provided with the cooler, the switching chamber
A damper device having an opening / closing member for
In addition to the air flow, blow cool air from the cooler to the switching chamber.
Install a dedicated fan inside the damper device.
Serial inflow duct of the cool air is provided in the damper device unit, further,
A blower that sends cold air to the switching chamber on the front of the damper device.
An outlet is opened, and the damper device includes a damper body and a damper body.
And a damper cover for storing
Is a front member and a rear member made of an insulator,
The opening / closing member is sandwiched between the front member and the rear member .

According to a third aspect of the present invention, in the refrigerator according to the first or second aspect , the dedicated fan is provided on the upstream side of the opening / closing member which is the cold air inflow side of the damper device.

According to a fourth aspect of the present invention, in the refrigerator of the first aspect, the dedicated fan is provided on the downstream side of the opening / closing member which is the cold air outflow side of the damper device.

According to a fifth aspect of the present invention, in the refrigerator of the first or second aspect , the rotation speed of the dedicated fan is rotated faster as the set temperature of the switching chamber is lower.

According to a sixth aspect of the present invention, in the refrigerator of the first or second aspect , when the preset temperature of the switching chamber is switched to a temperature lower than the preset temperature before the switching, the dedicated fan is set to a normal rotation speed. Rotate faster, return to the normal rotation speed after a certain period of time, and when the set temperature of the switching chamber is switched to a temperature higher than the set temperature before switching, the dedicated fan is set to be slower than the normal rotation speed. It is rotated and returned to the normal rotation speed after a certain time.

According to a seventh aspect of the present invention, in the refrigerator according to the first or second aspect , the dedicated fan is rotated for a certain period of time from the time when the set temperature of the switching chamber is switched, and is stopped at other times. is there.

The refrigerator according to claim 8 is the refrigerator according to claim 3, wherein a damper device having an opening / closing member for the refrigerating chamber is provided between the refrigerating chamber and the dedicated fan, and an opening / closing member for the switching chamber is provided. Even when is closed, the dedicated fan is rotated when the opening / closing member for the refrigerating compartment is opened.

The refrigerator of claim 9 is the refrigerator of claim 1 or 2.
The switching provided on the front surface of the damper device.
Behind the air outlet for sending cold air to the chamber, said air outlet
With a heater made of heating wire so as to traverse
Is. According to the refrigerator of claim 1, the damper device for the switching chamber and the dedicated fan are provided, and by controlling them, the internal temperature of the switching chamber can quickly reach the set temperature, and It is possible to stably maintain the internal temperature. In addition, a dedicated fan is installed inside the damper device.
Since it is provided laterally , the space can be effectively used.

According to the refrigerator of the third aspect, by providing the dedicated fan on the upstream side of the opening / closing member, it is possible to reliably control the amount of cold air.

According to the fourth aspect of the present invention, by providing a dedicated fan on the downstream side of the opening / closing member, it is possible to reliably control the amount of cold air.

In the refrigerator of claim 5, the rotation speed of the dedicated fan is rotated faster as the set temperature of the switching chamber is lower,
It is possible to stabilize and maintain the temperature inside the switching chamber.

According to the sixth aspect of the present invention, when the preset temperature of the switching chamber is switched to a temperature lower than the preset temperature before switching, the dedicated fan is rotated faster than the normal rotation speed, and after a certain period of time, the special fan is rotated. By returning to the normal rotation speed, the low set temperature can be reached earlier. On the other hand, when the set temperature of the switching chamber is switched to a temperature higher than the set temperature before the switching, the dedicated fan is rotated slower than the normal rotation speed, and after returning for a certain period of time to the normal rotation speed, It can reach faster due to its higher set temperature.

According to the refrigerator of claim 7, the dedicated fan is rotated for a certain period of time after the set temperature of the switching chamber is switched, and is stopped for the rest of the time. Therefore, the inflow of cold air increases by rotating the dedicated fan,
The set temperature can be reached faster.

According to the eighth aspect of the present invention, an opening / closing member for the refrigerating compartment is provided between the refrigerating compartment and the dedicated fan, and the opening / closing member for the refrigerating compartment is opened even when the opening / closing member for the switching compartment is closed. At this time, a dedicated fan is rotated to allow cold air to flow into the refrigerating compartment to control the temperature inside the refrigerating compartment.

According to the ninth aspect of the present invention , in the refrigerator mode
When switching from the cold room mode to the
Let's turn the dedicated fan and warm air will flow into the switching room
Therefore, it is possible to switch the set temperature to the cold room mode quickly.
it can.

[0026]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS.

First, the overall structure of the refrigerator 10 will be described with reference to FIGS. 6 to 8. FIG. 6 shows a refrigerator 1 according to this embodiment.
0 is a front view, FIG. 7 is a cross-sectional view taken along line XX in FIG. 6, and FIG. 8 is a vertical cross-sectional view of the middle section of the refrigerator 10. 1
4 is provided, an ice making chamber 16 and a switching chamber 18 are provided below the freezing chamber 20, a freezing chamber 20 is provided below that, and a vegetable chamber 22 is provided at the bottom.

The refrigerating compartment 14 has a hinged door 14a.
The ice making chamber 16, the switching chamber 18, the freezing chamber 20 and the vegetable chamber are each provided with a drawer type door 16a, 18a, 20.
a and 22a are provided.

A cooling space 24 composed of a cooler cover and an inner box of the cabinet 12 is provided on the back surfaces of the ice making chamber 16 and the freezing chamber 20. Inside this, a cooler 26 is provided, a cooling fan 28 is provided above it, and a defrost heater 30 is provided below the cooler 26. A defrosting temperature sensor 80 for detecting the defrosting end temperature is provided above the cooler 26.

As shown in FIG. 8, on the rear surface of the switching chamber 18, there is provided a damper device 32 for sending the cool air from the cooling fan 28 to the refrigerating chamber 14 and the switching chamber 18. The damper device 32 has a left side surface provided with a cooling air suction port 34 from a cooling fan 28, an upper surface provided with a refrigerating compartment duct 36 for sending the cool air to the refrigerating compartment 14, and a front surface provided with a switching compartment 18 An outlet 38 is provided for sending cold air to the. The structure of the damper device 32 will be described later.

Further, as shown in FIG. 7, a machine room 44 is provided on the back surface of the vegetable room 22, and a compressor 46 is provided inside thereof.

Next, based on FIGS. 9 and 10, the switching chamber 1
The structure of No. 8 will be described.

In the switching chamber 18, as shown in FIG. 10, a box body 55 constituting a ceiling surface 48, a left side surface 50, a right side surface 52, and a bottom surface 54 has an inner box 13 of the cabinet 12 at the position of the damper device 32. The back plate 56 is attached to the damper device 32. The back plate 56 serves as the back surface of the switching chamber 18. A frame 57 is attached to the front surface of the box 55.

An opening 58, which is an outlet for cool air, is opened in the rear plate 56, and this position corresponds to the position of the outlet 38 of the damper device 32. Further, on the right side of the opening 58, a switching chamber temperature sensor 60 for detecting the temperature inside the switching chamber 18 is provided.

The box 55 is provided around it with a heat insulating material such as styrofoam. Further, a bottom surface heater 62 made of a heating wire is provided on the back surface of the bottom surface 54,
The bottom heater 62 is covered with an aluminum tape 64.
Further, a side surface heater 66 made of a heating wire is provided on the back surface of the left side surface 50, and the side surface heater 66 is covered with an aluminum tape 68. And this aluminum tape 68
1, is extended to the position of the back plate 56, and the heat of the side heater 66 is transmitted to the back plate 56 made of synthetic resin through the aluminum tape 68.
Accordingly, the rear plate 56 can be heated from the rear side without providing a special heater. Therefore, the switching chamber 18 is heated from the three sides of the bottom surface, the left side surface, and the back surface, and the inside temperature can be stably maintained.

The bottom heater 62 is a side heater 66.
It has a large maximum heat capacity so that it can be heated more than that. This is because the bottom heater 62 is intended to raise the temperature of the switching chamber 18.

The bottom heater 62 and the side heater 66 are
When the ambient temperature becomes low and the temperature inside the switching chamber 18 becomes lower than the set temperature, the heaters 62 and 66 are caused to generate heat to maintain the inside at the set temperature. .

(First Embodiment of Damper Device 32) Next, a first embodiment of the damper device 32 will be described with reference to FIGS.

As shown in FIG. 2, the damper device 32 comprises a damper main body 84 and a damper cover 86 for accommodating the damper main body 84 from the rear side. As shown in FIG. 1, the damper body 84 includes a front member 88 and a rear member 90 made of an insulating material such as polystyrene foam, and an ABS resin between the front member 88 and the rear member 90. The shield plate 92 is sandwiched.

First, the structure of the front member 88 will be described.

Inside the front member 88, an inflow duct 94 having an open rear surface is provided. The left side of this inflow duct 94 is also open, and a dedicated fan 96 can be fitted therein. When the dedicated fan 96 is fitted into the front member 88, as shown in FIG. 3, a groove 98 is provided in the left end portion of the inflow duct 94, and the groove 98 is fitted therein.

A blow-out port 38 for sending cold air to the switching chamber 18 is opened above the inflow duct 94.

Next, the structure of the rear member 90 will be described.

The rear member 90 is attached to the rear surface of the front member 88. A recess 100 for inserting the rear side of the dedicated fan 96 is provided at the left end of the rear member 90.
Is provided. In addition, a refrigerating compartment outlet 102 for sending cold air to the refrigerating compartment 14 penetrates through the upper left side. Further, as shown in the cross-sectional view of FIG. 4, a transmission duct 104 is vertically provided on the upper right side.

The dedicated fan 96 has four cold air circulation openings 116 on the outside of a circular opening 114 for rotating the blades 112. Cold air flows into this cold air flow port 116 from this portion even if the blade 112 does not rotate.

Next, the structure of the substantially rectangular shield plate 92 will be described.

A refrigerating room baffle 106 is provided on the upper left side of the shielding plate 92, and a switching room baffle 108 is provided on the right side thereof. A damper motor 110 that moves the baffles 106 and 108 is provided on the lower left side of the shielding plate 92. That is, this structure is a one-motor, two-baffle system.

The front member 88 and the rear member 90 are connected to the shield plate 9
The damper main body 84 is completed by assembling with the two sandwiched. In this case, the fixing is performed by the front member 88 and the rear member 9.
Wrap the tape around 0. Then, the assembled damper body 84 is housed in the damper cover 86 as shown in FIG. As described above, the damper cover 86 is provided with the cooling air suction port 34 from the cooling fan 28 and the refrigerating compartment duct 36 for sending the cool air to the refrigerating compartment 14.

The flow of cold air in the damper device 32 will be described.

The cool air sucked from the suction port 34 flows into the inflow duct 94 through the special fan 96. And
If the refrigerating compartment baffle 106 is open, the refrigerating compartment outlet 1
Cold air is sent to the refrigerating compartment 14 from 02 through the refrigerating compartment duct 36. If the switching chamber baffle 108 is open, cool air flows from the inflow duct 94 to the transmission duct 104, and cool air is sent from the switching chamber outlet 38 to the switching chamber 18.
In this case, if the dedicated fan 96 is rotating, the cool air is forcibly sent to each room. Further, even if the special fan 96 is not rotating, the cooling air can flow in because the circulation port 116 is open.

Next, the structure of this electric system will be described with reference to FIG.

As shown in FIG. 7, the control device 70 composed of a microcomputer is provided on the upper substrate on the rear side of the refrigerating compartment 14. This includes a motor drive device 74 for controlling a motor 72 for rotating the cooling fan 28, a temperature sensor 60 for the switching chamber, and a side heater 66 for the switching chamber 18.
And the bottom heater 62 of the switching chamber 18 and the defrost heater 30.
And a compressor 46 are connected. Further, the freezing compartment temperature sensor 78 and the defrosting temperature sensor 80 are connected,
An operation panel 82 for operating the set temperature of each room is also connected.

In the operation panel 82, the temperature of the switching chamber 18 can be continuously set among the refrigerating room mode, the vegetable room mode, the chilled mode and the partial mode, and
It can be set continuously in the freezing mode (weak, normal, strong). The reference temperatures in the refrigerating room mode, vegetable room mode, chilled mode, partial mode, and freezing mode (weak, normal, strong) are as shown in FIG.

Further, the controller 70 includes a dedicated fan 9
A motor drive 120 for rotating the motor 118 for 6 is connected. This motor drive device 12
0 is composed of an inverter circuit for controlling the rotation speed of the dedicated fan motor 118. A damper motor 110 for operating the refrigerating compartment baffle 106 and the switching compartment baffle 108 is also connected.

Next, a control method in the damper device 32 will be described.

1. First Control Method In the first control method, the dedicated fan 96 is normally rotated at a constant speed of 2,500 (rpm). And
When the set temperature of the switching chamber 18 is switched, the number of rotations thereof is increased or decreased, and after a certain period of time (for example, 2 hours), the original constant speed number of rotations is restored.

As shown in FIG. 13, 2,500 (rp
When rotating at a constant speed at m) and switching the set temperature to a lower one (for example, from the refrigerating compartment mode to the freezing compartment mode), the rotation speed is increased to 3,000 (rpm) and the constant speed rotation is performed after 2 hours. It is something to return. As a result, the rotation speed of the dedicated fan 96 increases for a certain period of time, the inflow amount of cool air increases, and the internal temperature of the switching chamber 18 can be rapidly lowered. On the other hand, when the set temperature is raised, the number of rotations is reduced to reduce the inflow amount of cold air so that the temperature inside the refrigerator is likely to rise.

Further, since the dedicated fan 96 is provided on the upstream side of the baffle 108 to force the cool air to be forced into the refrigerating chamber 14 or the switching chamber 18, the set temperature can be reached faster.

In this case, the baffle 108 for the switching chamber is always opened, and the baffle 108 for the refrigerating chamber is kept open.
Opens and closes according to the temperature inside the refrigerator compartment 14.

2. Second Control Method The second control method is to change the number of rotations of the dedicated fan 96 according to the set temperature, instead of rotating the dedicated fan 96 at a constant speed as in the first control method. .

That is, the rotation speed of the dedicated fan 96 is determined by the set temperature of the switching chamber 18, and is 500 to 500 in the vegetable compartment mode as shown in FIG.
It is 1,000 (rpm). Then, the lower the set temperature, the higher the number of rotations, and in the freezer mode, it is 2,000 to 3,000 (rpm).

As a result, in the freezing compartment mode, the amount of cold air flowing in is increased by increasing the rotation speed, and the inside temperature of the switching chamber 18 can be maintained at a low temperature. On the contrary,
When the set temperature of the switching chamber 18 is high as in the refrigerating room mode or the vegetable room mode, the inflow amount of cold air can be reduced by the rotation speed to maintain the high temperature.

Further, since a dedicated fan 96 is provided on the upstream side of the baffle 108 to force the cool air into the refrigerating chamber 14 or the switching chamber 18, it is possible to reach the set temperature faster.

3. Third Control Method In the third control method, for example, when the cold room mode (about 3 ° C.) is set and a load is applied by putting warm food or the like in the switch room 18, the switch room 18 is used. The temperature inside the refrigerator rises. Therefore, the switching chamber temperature sensor 60 detects the temperature rise, opens the switching chamber baffle 108, and forcibly rotates the dedicated fan 96. As a result, the cool air is forced to flow, so that the internal temperature of the switching chamber 18 can be maintained at the target set temperature even if a load is applied as shown in FIG.

In FIG. 14, the solid line shows the case of this control, and the dotted line shows the conventional one. According to this, in the conventional case, when the load is applied, the temperature rises by about 6 ° C., but in the case of the present control, the temperature rises only by about 3 ° C., and a more stable inside temperature can be maintained.

Further, since the dedicated fan 96 is provided on the upstream side of the baffle 108 to force the cool air to be forced into the refrigerating chamber 14 or the switching chamber 18, it is possible to reach the set temperature faster.

4. Fourth Control Method In the fourth control method, in the vegetable compartment mode, warm air containing water generated by the heat of the defrost heater 30 is supplied to the inside of the switching chamber 18 in order to secure sufficient humidity for storing vegetables. It is a control to send to. That is, as shown in FIG. 15, when defrosting is started, the dedicated fan 96 is operated,
The switching chamber baffle 106 is opened, and warm air containing water is allowed to flow into the switching chamber 18. As a result, the inside of the switching chamber 18 can be maintained at a high humidity, which is suitable for storing vegetables. In FIG. 15, the solid line is the case of this control, and the dotted line is the conventional one.

Further, since a dedicated fan 96 is provided on the upstream side of the baffle 108 to forcibly send the cool air to the refrigerating chamber 14 or the switching chamber 18, it is possible to reach the set temperature faster.

When this control is performed, the refrigerating compartment baffle 106 is closed in order to prevent warm air containing water from entering the refrigerating compartment 14.

(Second Embodiment of Damper Device 32) Next, the structure of the damper device 32 of the second embodiment will be described with reference to FIGS.

The damper body 8 of the damper device 32 of this embodiment.
4 also comprises a front member 88 and a rear member 90, and a shield plate 92 is sandwiched between them.

An upper inflow duct 122 and a lower inflow duct 124 are horizontally provided in the front member 88, and a dedicated fan 126 is provided at a left end portion of the upper inflow duct 122. Further, the left end portion of the lower inflow duct 124 is open, and the inflow port 128 is configured so that cold air always flows in. Above the upper inflow duct 122, a blowout port 38 for sending cool air to the switching chamber 18 is provided.

On the left side of the rear member 90, the refrigerating chamber outlet 1
02 and the left transmission duct 130 connected to this are provided vertically. Further, on the right side thereof, the right transmission duct 13
2 is provided vertically.

The shield plate 92 is provided with four baffles, and an upper baffle 134 and a lower baffle 136 for the refrigerating room, an upper baffle 138 and a lower baffle 1 for the switching room, respectively.
And 40. Upper baffle 13 for cold room
4, the lower baffle 136 operates with one damper motor 142, and the upper baffle 138 for the switching chamber and the lower baffle 14
0 operates with one damper motor 144.

The operation state of the damper device 32 of the second embodiment will be described.

When normal temperature control is performed on the switching chamber 18 and the refrigerating chamber 14, the dedicated fan 126 is stopped and the upper baffles 134 and 138 are closed. Then, the cool air from the cooling fan 28 is passed from the inflow port 128 to the lower inflow duct 12
4, the lower baffles 136 and 140 are opened and closed to send cold air to the refrigerating chamber 14 and the switching chamber 18, respectively.

When it is desired to forcibly cool the refrigerating chamber 14 and the switching chamber 18, the lower baffles 136 and 140 are closed, and the dedicated fan 126 is rotated so that the upper baffle 13 is rotated.
4, 138 forcibly cool air from the refrigerating chamber 14 and the switching chamber 1
Send to 8.

Further, a dedicated fan 126 is provided on the upstream side of the baffles 134 and 138 so that the refrigerating room 14 or the switching room 1
Since the cool air can be forcibly sent to 8, it is possible to reach the set temperature faster.

(Third Embodiment of Damper Device 32) Next, a damper device 34 of the third embodiment will be described with reference to FIG.
~ It demonstrates based on FIG.

The damper body 8 of the damper device 32 of this embodiment
4 is also composed of a front member 88, a rear member 90 and a shield plate 92.

The front member 88 is provided with an inflow duct 146 and an outlet 38 for blowing cold air into the switching chamber 18. The left side of the inflow duct 146 is open and constitutes the inflow port 147.

The rear member 90 is provided with an outlet 148 for blowing cold air into the refrigerating compartment 14. Outlet 148
A transmission duct 150 is provided on the right side of the. The transmission duct 150 is a duct for sending cool air to the switching chamber 18, and a dedicated fan 152 is provided above the duct.

As shown in FIG. 23, the method of attaching the dedicated fan 152 to the transmission duct 150 is as follows.
A frame-shaped mounting portion 154 is provided on the inside of the upper part of the above, a dedicated fan 152 is mounted thereon, and a cover 156 made of an insulating material is mounted thereon.

On the other hand, on the rear side of the blow-out port 38 of the front member 88 at the position opposed to the exclusive fan 152, FIG.
As shown in, a heater 158 composed of a heating wire is provided. A portion of the heater 158 that crosses the outlet 138 exposes the heating wire, and a portion attached to the front member 88 is covered with a covering member. The heater 158 is attached along the groove 160 provided on the rear surface of the front member 88.

The shielding plate 92 is L-shaped, has a refrigerating room baffle 162 at its upper end, and has a switching room baffle 164 at its right end. A damper motor 166 is provided in the central portion.

The operation state of the damper device 32 having the above structure will be described.

When it is desired to send the cool air to the refrigerating compartment 14, the refrigerating room baffle 162 is opened to send the cool air. On the other hand, when it is desired to send cold air to the switching chamber 18, the switching chamber baffle 1
64 is opened and the dedicated fan 152 is rotated to forcibly send the cool air into the switching chamber 18. Further, by heating the heater 158 and rotating the dedicated fan 152, warm air can be sent to the switching chamber 18, and the temperature inside the switching chamber 18 can be forcibly raised.

FIG. 16 shows this control method. For example, when the refrigerating room mode (3 ° C.) is switched to the freezing room mode (−18 ° C.), the internal temperature of the switching chamber 18 is forced by forcibly rotating the dedicated fan 152 to send in cool air. Can be lowered. In the case of performing this control and the conventional case, T1 time (about 30
(Min), it is possible to quickly reach the set temperature to the set temperature.

On the contrary, when the freezer compartment mode is switched to the refrigerating compartment mode, when the heater 158 is heated and the special fan 152 is rotated, warm air flows into the switching compartment 128, so the set temperature is swiftly changed to the refrigerating compartment mode. You can switch. For example, if this control is performed, the set temperature can be reached earlier than the conventional control by T2 time (about 2 hours).

Further, since the dedicated fan 152 is provided on the downstream side of the baffle 146 to forcibly send the cool air into the switching chamber, the dedicated fan 152 can be controlled according to the set temperature of the switching chamber 18, and , It is easy to reach the set temperature because cold air etc. forcibly flows in.

FIG. 27 shows a modification of the mounting method of the heater 158. In this case, in the front surface of the dedicated fan 152,
The heater 158 is attached to the dedicated fan 152 by providing the hook 168 which is the attachment portion of the heater 158.

(Fourth Embodiment of Damper Device 32) Next, a fourth embodiment of the damper device 32 will be described.

The damper device 32 of this embodiment and the third embodiment
2 is that a second transmission duct 170 is further vertically provided on the right side of the transmission duct 150, and a second baffle 172 for a switching chamber is provided on the shielding plate 92 so as to correspond thereto.

With this damper device 32, when the cool air is not forcibly sent, the exclusive fan 152 is stopped,
The baffle 164 is closed. Then, only by opening / closing the second baffle 172, the temperature inside the refrigerator can be controlled by sending the cool air into the switching chamber 18.

In this case, the refrigerating room baffle 16
Two dedicated damper motors 174 are provided, and the first baffle 164 and the second baffle 172 for the switching chamber are operated by the damper motor 176.

Further, in the damper device 32 of the fourth embodiment, since the dedicated fan 152 is provided on the downstream side of the baffle 164 and the cool air can be forcedly sent to the switching chamber 18, the setting of the switching chamber is set. Dedicated fan 15 depending on the temperature
2 can be controlled, and cold air or the like is forced to flow, so that the set temperature can be easily reached.

[0097]

As described above, according to the refrigerator of the present invention, in addition to the cooling fan, a dedicated fan for blowing cool air to the switching chamber can be provided to forcibly send the cool air to the switching chamber. You can reach it quickly. Also,
Cold air intake on the side, refrigerating room duct on the top, blowout on the front
Inside the damper device with a mouth, a dedicated fan is installed sideways.
Because of this, the space can be used effectively. Further, since a dedicated fan can be provided on the upstream side of the opening / closing member for the switching chamber to force the cool air into the refrigerating chamber or the switching chamber, the temperature can be reached earlier than the set temperature.

Further, since a dedicated fan can be provided on the downstream side of the switching chamber opening / closing member to forcibly send the cool air into the switching chamber, the dedicated fan can be controlled according to the set temperature of the switching chamber, Moreover, since the cool air or the like is forced to flow in, it is easy to reach the set temperature.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a damper body of a damper device according to a first embodiment.

FIG. 2 is an exploded perspective view of the damper device according to the first embodiment.

FIG. 3 is a perspective view when a dedicated fan is attached to the front member.

4 is a cross-sectional view taken along the line AA in FIG.

5 is a sectional view taken along line BB in FIG.

FIG. 6 is a front view of the refrigerator.

7 is a sectional view taken along line XX in FIG.

FIG. 8 is a vertical cross-sectional view of a middle section of a refrigerator showing an embodiment of the present invention.

FIG. 9 is an exploded perspective view of a switching chamber.

FIG. 10 is a front view of the switching chamber.

FIG. 11 is a block diagram of a refrigerator.

FIG. 12 is a diagram showing a table in which a set temperature of a switching chamber and a rotation speed are described.

FIG. 13 is a graph showing the relationship between the rotation speed and the temperature of a dedicated fan in the first control method.

FIG. 14 is a graph of a third control method.

FIG. 15 is a graph of a fourth control method.

FIG. 16 is a graph of a control method when a heater is provided.

FIG. 17 is an exploded perspective view of the main body of the damper device according to the second embodiment.

FIG. 18 is a perspective view of the damper device.

19 is a cross-sectional view taken along the line CC in FIG.

20 is a cross-sectional view taken along the line DD in FIG.

FIG. 21 is an exploded perspective view of a damper body of the damper device according to the third embodiment.

FIG. 22 is a perspective view of the damper body.

FIG. 23 is an exploded perspective view in which a dedicated fan is attached to the rear member.

24 is a cross-sectional view taken along the line EE in FIG.

25 is a cross-sectional view taken along the line FF in FIG.

FIG. 26 is a perspective view of attaching the heater to the front member.

FIG. 27 is a perspective view of a modification of the heater mounting structure.

FIG. 28 is an exploded perspective view of a damper body of the damper device according to the fourth embodiment.

FIG. 29 is a perspective view of the damper body.

30 is a cross-sectional view taken along the line GG in FIG.

31 is a sectional view taken along line HH in FIG. 29.

32 is a cross-sectional view taken along the line I-I in FIG. 29.

[Explanation of symbols]

10 refrigerator 18 switching room 32 damper device 62 Bottom heater 66 Side heater 80 Defrost temperature sensor 88 Front member 90 Rear member 92 Shield 96 dedicated fan 106 baffle 108 baffle 110 Motor for damper

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshiro Naemura 1-6 Ota Toshiba-cho, Ibaraki-shi, Osaka Inside the Osaka factory of Toshiba Corporation (56) Reference JP-A-61-252469 (JP, A) JP Sho 62-288468 (JP, A) JP 60-263070 (JP, A) JP 63-49676 (JP, A) Actual development Sho 62-38578 (JP, U) (58) Fields investigated (Int .Cl. ⁷ , DB name) F25D 11/02 F25D 17/06 314 F25D 17/08 309

Claims (9)

(57) [Claims] 1. A refrigeration cycle including a compressor, a cooler, etc., a fan for blowing cold air cooled by the cooler, and a set temperature that can be switched from a freezing temperature to a refrigerating room temperature or a vegetable room temperature. In a refrigerator having a switching chamber and a refrigerating chamber above the cooling chamber, a cooling space in which the cooler and the cooler fan are arranged is provided, and between the switching chamber and the cooling space in which the cooler is provided. In addition, a damper device having an opening / closing member for the switching chamber is provided, and this damper device has a side surface for sucking cool air from a cooling fan.
There is a mouth and a refrigerator compartment for sending cool air to the refrigerator on the top.
And an outlet for sending cold air to the switching chamber on the front.
In addition to the cooling fan, a dedicated fan for blowing cool air from the cooler to the switching chamber is provided laterally inside the damper device. 2. A refrigeration cycle including a compressor, a cooler, etc., a fan for blowing cold air cooled by the cooler, and a set temperature can be switched in a temperature range from a freezing temperature to a refrigerating room temperature or a vegetable room temperature. In a refrigerator having a switching chamber, a cooling space in which the cooler and the cooler fan are arranged is provided, and an opening / closing for the switching chamber is provided between the switching chamber and the cooling space in which the cooler is provided. A damper device having a member is provided, and in addition to the cooling fan, a dedicated fan for blowing the cool air from the cooler to the switching chamber is provided inside the damper device, and the cool air flows into the damper device. A duct is provided, and a blowout port for sending cold air to the switching chamber is opened on the front surface of the damper device, and the damper device includes a damper body and a damper cover that houses the damper body. Becomes, the damper body is made more the front member and the rear member composed of an insulator, between the front member and rear member, wherein the closing member is sandwiched refrigerator. 3. The refrigerator according to claim 1, wherein the dedicated fan is provided on the upstream side of the opening / closing member, which is the cold air inflow side of the damper device. 4. The refrigerator according to claim 1, wherein the dedicated fan is provided on a downstream side of the opening / closing member which is a cool air outflow side of the damper device. 5. The refrigerator according to claim 1, wherein the rotation speed of the dedicated fan is rotated faster as the set temperature of the switching chamber is lower. 6. When the preset temperature of the switching chamber is switched to a temperature lower than the preset temperature before switching, the dedicated fan is
The refrigerator according to claim 1 or 2, wherein the refrigerator is rotated at a speed lower than a normal rotation speed and is returned to the normal rotation speed after a predetermined time. 7. The refrigerator according to claim 1, wherein the dedicated fan is rotated for a certain period of time after the set temperature of the switching chamber is switched, and stopped for the other period of time. 8. A damper device having an opening / closing member for the refrigerating compartment is provided between the refrigerating compartment and the dedicated fan, and the opening / closing member for the refrigerating compartment is opened and closed even when the opening / closing member for the switching compartment is closed. The refrigerator according to claim 1, wherein the special fan is rotated when the member is opened. 9. A heater formed of a heating wire is provided behind the air outlet for sending cold air to the switching chamber provided on the front surface of the damper device and across the air outlet. The refrigerator according to claim 1 or 2.