JP2001147072A - Electric refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric refrigerator which has a freezing chamber, having two freezing zones different in temperature in a simple cold air- circulating structure wherein the freezing chamber is heat insulated and partitioned into the upper and lower freezing zones, each having a cold air blow hole and an intake hole communicated with one evaporator and a damper attached to one cold air blow hole for adjusting the cold air blow rate, thereby adjusting the temperature in the same freezing zone. SOLUTION: A freezing chamber 8 is heat insulated and partitioned into an upper and lower parts, by a partition wall guide 11b disposed around an upper case 11 to form first and second refrigerating zones 8b, 8c, each having a duct 13 integrated with a cold air blow hole and air intake holes and a damper 19 for adjusting the quantity of cold air blown out of the blow hole 18 in the second refrigerating zone 8c to adjust the temperature of this zone 8c, thus forming two freezing zones having two different temperature bands in the refrigerating chamber 8. This enables storage of stores suited to the respective temperature zones.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric refrigerator, and more particularly, to a freezing room having two different temperature zones, each having a cooling air outlet and a suction port. To a structure of a duct for circulating cool air through the duct.

[0002]

2. Description of the Related Art A conventional electric refrigerator is provided with a machine room 2 provided with a compressor 3 at a lower rear portion, for example, as shown in an electric refrigerator 30 shown in FIG. 4 and a partition wall 5 to separate the heat insulating box 1
Refrigerating compartment 6 provided with an opening / closing door 6a that opens and closes left and right on the upper part of the refrigerator.
, A vegetable compartment 7 having a drawer-type opening / closing door 7a is provided at the center, and a freezing room 31 having a drawer-type opening / closing door 31a is provided at a lower portion.

An evaporator 10 is provided on the back side of the freezing chamber 31. The refrigerant circulating in the compressor 3 and the evaporator 10 and the air in the freezing chamber 31 exchange heat to produce cool air. , And is sent into the freezing room 31 by the blower fan 9. As a result, the room temperature in the freezer compartment 31 is kept at -18 ° C. or lower, which enables long-term storage of foods and other stored items.
However, when fresh foods and the like are stored in the freezing room 31, there is a problem that water is lost due to excessive cooling, or it takes a considerable time to take out and defrost the same from the freezing room 31. -To solve the problem
There has been a demand for a freezing room that cools from about 3 ° C. to about −7 ° C. However, if a partition wall is newly provided in the heat-insulating box 1a and a freezing room having the above-mentioned temperature zone is separately provided, the storage capacity of the freezing room decreases due to the volume of the partition wall, while the cool air outlet is provided. In addition, a suction port and an evaporator are required, and the structure of the cool air circulation is complicated.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a refrigerator of an electric refrigerator insulated and vertically divided into two refrigeration zones while providing two refrigeration zones. By connecting the outlet and the inlet to one evaporator, and providing a damper at the outlet of the cool air in one refrigeration area, adjusting the amount of cool air blow out and adjusting the temperature of the refrigeration area, it is simple. It is an object of the present invention to provide an electric refrigerator provided with a freezing room having a freezing area in two different temperature zones with a cool air circulation structure.

[0005]

According to the present invention, in order to solve the above-mentioned problems, the inside of a heat insulating box is vertically divided by a partition wall to provide a refrigerator compartment, a vegetable compartment, and a freezer compartment.
An opening / closing door is provided at each of the front opening portions of the vegetable compartment and the freezing compartment, and an electric refrigerator provided with an evaporator and a blower fan for generating cool air on the back side of the freezing compartment. , Attach the lower case with the top open,
On the back surface of the opening / closing door, slidably supported by front and rear partition wall guide grooves provided on both left and right inner walls of the freezing compartment, the freezing compartment is divided into a first freezing zone and a second freezing zone. An upper case provided with a partition wall guide surrounding a heat insulating material in a protruding manner so as to be able to be taken in and out freely, and a first outlet for sending cool air to the first freezing region by the blower fan on the back side of the freezing room. And a first suction port for returning the cool air to the evaporator, wherein the cool air is sent out to the second refrigeration zone by the blower fan, and a second outlet provided with a damper and a second for returning the cool air to the evaporator. A duct provided with a suction port and covering the evaporator and the blower fan, and the partition wall guide divides the freezing compartment into a first freezing zone including the upper case and a second freezing zone including the lower case. And insulated to the second while the second The temperature of the first refrigeration zone and the temperature of the second refrigeration zone are different by adjusting the temperature of the second refrigeration zone by adjusting the amount of cool air sent from the second outlet by the damper at the outlet. The configuration is as follows.

Further, the duct is formed so that the first outlet and the second outlet communicate with each other and the first inlet and the second inlet communicate with each other. Has become.

[0007] Further, the first outlet is provided above a front portion of the upper case.

The damper includes a rotary shaft rotatably supported in the second outlet and a flat plate supported on the rotary shaft, and opens and closes the second outlet. The structure is such that the amount of cool air sent from the second outlet can be adjusted.

Further, by fixing the damper at an arbitrary angle, the amount of cool air sent from the second outlet can be set arbitrarily.

[0010] Further, the damper is driven by a motor provided on the side surface of the outlet of the second refrigeration zone.

The second suction port is provided near the bottom of the second refrigeration area so as to return from the bottom of the second refrigeration area and suck cool air.

Further, a shield plate is provided on the lower case surface opposite to the second outlet so as to shield cold air from the second outlet from being directly sucked into the second inlet. ing.

Further, the shield plate is formed integrally with the lower case.

The upper case includes a locking claw provided on a front surface of the same case, and an engaging portion provided on a back surface of the opening and closing door of the freezer compartment corresponding to the locking claw. It is configured so that it can be attached and detached.

Further, the upper case is formed of a member having heat insulating properties.

[0016]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a sectional view showing an embodiment of an electric refrigerator according to the present invention,
FIG. 2 is a sectional view of the main part, and FIG. 3 is a perspective view of the main part. FIG.
As shown in the figure, the electric refrigerator 1 is provided with a machine room 2 provided with a compressor 3 at a lower rear portion, and a heat insulating box 1a provided with a heat insulating material.
The interior is vertically divided by a partition wall 4 and a partition wall 5, a refrigerator compartment 6 is provided at an upper portion, a vegetable compartment 7 is provided at a central portion, and a freezing compartment 8 is provided at a lower portion.
Is provided. The refrigerating compartment 6 is provided with an opening / closing door 6a which opens and closes left and right at a front opening portion, and has a plurality of mounting
b, a plurality of container storage sections 6c are provided on the back surface of the opening / closing door 6a, and the vegetable room 7 is provided with a drawer-type opening / closing door 7a at the front opening of the vegetable room 7; A substantially rectangular storage portion 7b formed integrally with the door 7a and having an open top surface
It has.

The freezer compartment 8 is provided with a drawer-type opening / closing door 8a at the front opening of the freezer compartment 8, and the refrigerant is circulated to the compressor 3 of the machine room 2 at the back side of the freezer compartment 8. An evaporator 9 for exchanging air in the freezing room 8 with the refrigerant to cool the air is provided, and a blower fan 10 for sending cool air into the freezing room 8 is provided on the front surface thereof.

As shown in the perspective view of the main part of FIG. 3, the opening / closing door 8a having a handle portion 8b on the front surface has a substantially rectangular lower case 12 with an open upper surface attached to the lower rear portion. By inserting a plurality of rollers 12c, which are rotatably supported on both left and right sides of the case 12, into a pair of substantially U-shaped guides 8f provided on both left and right inner walls of the freezing chamber 8, the front and rear sides are inserted. It is supported so that it can slide freely in and out.

A substantially rectangular upper case 11 made of a member having an open upper surface and having heat insulating properties is disposed on the upper rear surface of the opening / closing door 8a. And a pair of partition wall guides formed of heat insulating members and having a substantially U-shaped cross section and extending in the front-rear direction on both inner walls of the freezing compartment 8. By inserting the partition wall guide 11b into the groove 8e, the partition wall guide 11b is slidably supported back and forth. A locking claw 11c is provided on the front surface of the same case 11, and an engaging portion 8g corresponding to the locking claw 11c is provided on the back surface of the door 8a. Engaging part 8
The upper case 11 is detachably attached to the opening / closing door 8a by being disengaged from the g.

As shown in FIG. 2, when the upper case 11 is disposed in the freezer compartment 8, the partition wall guide 11 b protrudes around the upper case 11. It is vertically insulated and partitioned, and the first refrigeration zone 8b is
A second freezing zone 8c is formed at the lower part.

A duct 13 made of a synthetic resin material is formed on the back side of the freezing compartment 8 so as to cover the evaporator 9 and the blower fan 10. Same duct 1
3 extends forward along the partition wall 5 at the top,
A suction duct part 14 having a plurality of wind direction plates 16 at the tip and a first outlet 15 for sending cool air to the first refrigeration zone 8b is provided, and the upper case 1 is provided substantially at the center.
A second outlet 18 is provided below the partition wall guide 11b and sends out cool air to the second freezing zone 8c. A rotary shaft rotatably supported by a motor provided on the side surface of the second outlet 18 and a damper 19 made of a flat plate supported by the rotary shaft are provided in the second outlet 18. By rotating the damper 19, the second outlet 18 is opened and closed, and by fixing the damper 19 at an arbitrary angle, the amount of cold air sent out from the second outlet 18 is fixed. Is arbitrarily adjusted.

A portion of the duct 13 facing the vicinity of the upper end of the upper case 11 is provided with a first suction port 17 for sending return cold air from the first refrigeration zone 8 b to the evaporator 9. At the lower part of the first suction port, a suction port duct part 20 having a second suction port 21 formed at the tip is provided to extend downward so as to suck cool air from near the bottom of the second freezing area 8c, and is provided with the first suction port. The return cool air sucked in from the port 17 and the return cool air sucked in from the second suction port 21 are combined, sent to the evaporator 9, heat exchanged, and sent out again to the freezing compartment 8 by the blower fan 10. . The duct 13 is formed such that the first outlet 15 and the second outlet 18 communicate with each other, and the first inlet 17 and the second inlet 21 communicate with each other.

On the rear surface of the lower case 12, a horizontal shield formed integrally with the lower case 12 to prevent cool air discharged from the outlet 18 from being directly sucked into the inlet 21. The plate 12b is formed so as to extend rearward.

Next, the operation of the freezer compartment 8 of the electric refrigerator 1 will be described. One of the cool air that has been heat-exchanged in the evaporator 9 and cooled to −18 ° C. or less is sent out from the first outlet 15 to the first freezing area 8 b through the outlet duct 14 by the blower fan 10. The other is sent from the second outlet 18 to the second refrigeration zone 8c. The cool air sent to the first freezing area 8b cools the storage items in the upper case 11, and is then sucked from the first suction port 17 and sent to the evaporator 9. As a result, the first frozen area 8
The temperature of b is always kept at -18 ° C or lower.

When the damper 19 closes the second outlet port 18, no cool air is sent to the second freezing zone 8c, thereby increasing the temperature in the second freezing zone 8c.
When the temperature of the second freezing zone 8c exceeds -3 ° C., the damper 19 opens, and cool air is sent out to the second freezing zone 8c again. The opening and closing operation of the second air outlet 18 by the damper 19 is repeatedly performed, so that the second refrigeration zone 8c
The temperature inside is always kept in the range of −3 ° C. to −7 ° C., and fresh foods and the like suitable for the same temperature range can be stored.
Further, by fixing the damper 19 at an arbitrary angle and setting the amount of cold air sent to the second freezing region 8c to an arbitrary amount, a temperature zone different from the above-mentioned temperature zone can be set in the second freezing region 8c. Can also be set to

As described above, the partition wall guide 11b enclosing the heat insulating material provided in the upper case 11 and the upper case 11 are made of a member having heat insulation, so that the first freezing zone 8b and the second The refrigeration zone 8c is insulated from the refrigeration zone 8c, and both are formed as two refrigeration zones having different temperature zones, so that foodstuffs and the like suitable for each temperature zone can be stored.

[0027]

As described above, according to the present invention, the freezing compartment is divided into upper and lower compartments so as to be insulated by the partition wall guide provided around the upper case. While providing two refrigeration zones, a duct provided with a cool air outlet and a suction port in each refrigeration zone, and adjusting the amount of cool air sent from the outlet of the second refrigeration zone, By forming a freezing zone having two different temperature zones in the freezer compartment with the damper for adjusting the temperature, it is possible to store storage products suitable for each temperature zone, and the duct has a simple cool air circulation structure. The electric refrigerator can be configured and can provide a sufficient freezer compartment capacity by the partition wall guide.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an electric refrigerator according to the present invention.

FIG. 2 is a sectional view of a main part of the electric refrigerator according to the present invention.

FIG. 3 is a perspective view of a main part of the electric refrigerator according to the present invention.

FIG. 4 is a sectional view of an electric refrigerator according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric refrigerator 1a Insulated box 2 Machine room 3 Compressor 4 Partition wall 5 Partition wall 6 Refrigerator room 6a Opening / closing door 6b Storage shelf 6c Container storage part 7 Vegetable room 7a Opening / closing door 7b Storage part 8 Freezing room 8a Opening / closing door 8b First One refrigeration area 8c Second refrigeration area 8e Partition wall guide groove 8f Engagement part 9 Evaporator 10 Blower fan 11 Upper case 11a Storage part 11b Partition wall guide 11c Engagement claw 12 Lower case 12b Shield plate 12c Roller 13 Duct 14 Air outlet Duct part 15 Air outlet 16 Wind direction plate 17 Suction port 18 Air outlet 19 Damper 20 Suction port Duct part 21 Suction port

Claims (11)

[Claims] 1. The interior of a heat insulating box is vertically divided by a partition wall to provide a refrigerator compartment, a vegetable compartment, and a freezer compartment, and an opening / closing door is provided at each of the front openings of the refrigerator compartment, the vegetable compartment, and the freezer compartment. An electric refrigerator comprising an evaporator for generating cool air and a blower fan on the back side of the freezer compartment, wherein a lower case having an open upper surface is attached to a lower rear portion of the open / close door of the freezer compartment; The back surface is covered with a heat insulating material which is slidably supported by front and rear partitioning guide grooves provided on both left and right inner walls of the freezer compartment and which partitions the freezer compartment into a first freezing zone and a second freezing zone. An upper case, in which a wrapped partition wall guide is provided in a protruding manner, is provided so as to be able to be taken in and out, and a first outlet and the evaporator for sending cool air to the first freezing area by the blower fan are provided on the back side of the freezing compartment. A first suction port for sending cold air back to the A cool air is sent out by the blower fan to the area, a second outlet provided with a damper and a second suction port for returning the cool air to the evaporator and providing a duct for covering the evaporator and the blower fan are provided. While the partition wall guide insulates and partitions the freezing room into a first freezing region including the upper case and a second freezing region including the lower case, the second freezing region is damped by the second outlet. Electricity characterized in that the temperature of the first refrigeration zone and the temperature of the second refrigeration zone are made different by adjusting the temperature of the second refrigeration zone by adjusting the amount of cool air sent from the outlet. refrigerator. 2. The duct is formed such that the first outlet and the second outlet communicate with each other, and the first inlet and the second inlet communicate with each other. The electric refrigerator according to claim 1, wherein: 3. The electric refrigerator according to claim 1, wherein the first outlet is provided above a front portion of the upper case. 4. The damper comprises a rotating shaft rotatably supported in the second outlet and a flat plate supported on the rotating shaft, and opens and closes the second outlet. The electric refrigerator according to claim 1, wherein the amount of the cool air sent from the second outlet can be adjusted. 5. The amount of cool air sent out from the second outlet can be arbitrarily set by fixing the damper at an arbitrary angle.
An electric refrigerator according to claim 1. 6. The electric refrigerator according to claim 1, wherein the damper is driven by a motor provided on a side surface of the air outlet of the second refrigeration area. 7. The method according to claim 1, wherein the second suction port is provided near a bottom portion of the second freezing region so as to return from the bottom portion of the second freezing region and suck cool air. An electric refrigerator as described. 8. A shielding plate for shielding the cool air from the second outlet from being directly sucked into the second inlet on the lower case surface facing the second outlet. The electric refrigerator according to claim 1, wherein: 9. The electric refrigerator according to claim 1, wherein the shielding plate is formed integrally with the lower case. 10. The door according to claim 10, wherein the upper case includes a locking claw provided on a front surface of the same case, and an engagement portion provided on a back surface of the opening and closing door of the freezer compartment corresponding to the locking claw. The electric refrigerator according to claim 1, wherein the electric refrigerator is detachable from the electric refrigerator. 11. The electric refrigerator according to claim 1, wherein the upper case is formed of a member having a heat insulating property.