JP3157228B2 - Refrigerator cold air controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a refrigerator control apparatus for a refrigerator in which a refrigerator body is divided into a plurality of rooms.

[0002]

2. Description of the Related Art A conventional apparatus is constructed as shown in Japanese Utility Model Laid-Open No. 64-31973 and FIGS. 4 (a) and 4 (b). FIG. 4A is a longitudinal sectional front view of a main part of the apparatus of the present invention, and FIG. 4B is a plan view of the main part of the apparatus. FIG.
In FIG. 1B, reference numeral 1 denotes a duct for forming an air passage for supplying cool air in a refrigerator, and the duct 1 is branched into a cool air supply passage 2 for an ice room and a cool air supply passage 3 for a refrigerator. Reference numeral 4 denotes a damper for ice temperature, and reference numeral 5 denotes a damper for refrigeration, which are disposed in the cold air supply passages 2 and 3 immediately below the branch point of the duct 1, respectively. The ice temperature damper 4 includes a discharge port 4a, a baffle plate 4b for opening and closing the discharge port 4a, and a leaf spring 4c for urging the baffle plate 4b in the closing direction. The opening and closing of the discharge port 4a is performed by rotating the baffle plate 4b about the fulcrum 4d. Similarly, the refrigeration damper 5 includes a discharge port 5a, a baffle plate 5b for opening and closing the discharge port 5a, and a leaf spring 5c for urging the baffle plate 5b in the closing direction. The opening and closing of the discharge port 5a is performed by rotating the baffle plate 5b about the fulcrum 5d against the force. Although not shown, the rotational movement of the motor 6 is converted into a force in the direction opposite to the urging force of the leaf spring by power conversion means constituted by a cam, gears and the like, and the baffle plates 4b, 4b of the dampers 4, 5 are formed. 5b. The conventional cool air control device for a refrigerator is configured as described above, and the cool air from an evaporator (not shown) descends through a duct 1 by driving a blower (not shown). Then, when the ice temperature damper 4 and the refrigeration damper 5 are in the open state, the discharge ports 4a and 5a are branched to the cold air supply passage 2 for the ice room and the cold air supply passage 3 for the refrigeration room.
Cold air is blown into the ice greenhouse and the cold storage room, respectively. Thus, when the temperature of each chamber reaches a predetermined set temperature, each of the dampers 4 and 5 receives a signal from a separately provided temperature control device.
Is closed, and the supply of cold air stops.

[0003]

In the prior art, since the dampers 4 and 5 for ice temperature and for refrigeration are respectively arranged at the same height as described above, the signal from the temperature control device is transmitted. Therefore, when the dampers 4 and 5 are simultaneously opened, the same amount of cool air is supplied from the discharge ports 4a and 5a of the dampers to the ice warm room and the refrigerator room through the passages 2 and 3. Generally, in a refrigerator, the volume of the refrigerator compartment is larger than that of the ice compartment, and the temperature of the refrigerator compartment is higher, so that the frequency of opening and closing the refrigerator damper is higher. Especially when both dampers are open and the mounting height of the dampers is the same,
In order to supply a large amount of cold air to the refrigerator compartment, the discharge port must be enlarged, and this causes a problem that the cold damper becomes larger than the ice temperature damper, and the cold air control device becomes large. . In addition, it is desirable that the height of the duct in the cold air control device be reduced slightly to make it inconspicuous, and it is desirable to arrange the duct compactly including other related parts. If the outlets are provided at the same height, a trap must be arranged to prevent the backflow of warm air, and the height of the duct in the vertical direction increases, which is not suitable in terms of compactness. SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerator cool air control device which solves the above-mentioned problems (problems) of the conventional device.

[0004]

According to the present invention, there is provided a refrigerator for controlling a cool air in a refrigerator, wherein a refrigerator and an ice warmer are formed in an insulated box, and the cool air cooled by the cooler is guided to the two chambers through a duct. In the above, the duct comprises an inflow duct, a refrigeration duct branched from the inflow duct, and an ice temperature duct, and the refrigeration duct includes a refrigeration damper whose operation is controlled based on the temperature of the refrigeration compartment. The ice temperature duct is provided with an ice temperature damper whose operation is controlled based on the temperature of the ice temperature chamber, and the discharge port of the ice temperature damper is disposed upstream of the discharge port of the refrigeration damper. The above object is achieved by setting the opening and closing direction of the warming damper to be upward and the opening and closing direction of the refrigeration damper to be downward.

[0005]

According to the present invention, the discharge port of the ice temperature damper is arranged upstream and the discharge port of the refrigeration damper is arranged downstream in the flow direction of the cool air in the cool air control device. When the damper is in the open state, much cool air is supplied to the refrigerator compartment via the refrigerator damper. When the other damper is in the closed state, all the cool air flowing into the cool air control device is guided to one discharge port. Further, since the length of the duct in the vertical direction can be reduced as compared with the conventional one in which the discharge ports of both dampers are arranged at the same height position, it is suitable for making the cool air control device compact. In addition, the opening and closing direction of the ice temperature damper is directed upward and the opening and closing direction of the refrigeration damper is directed downward, thereby preventing the branched flow paths from interfering with each other. Effective utilization and further downsizing of the device can be achieved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to one embodiment shown in FIGS. First, the main configuration of a refrigerator to which the present invention is applied and the flow of cold air will be described with reference to FIG. FIG. 2 is a perspective view of the refrigerator in which the left and right door sides are omitted. In the figure, reference numeral 20 denotes an insulation box.
The following are arranged in this heat insulation box. 21 is a freezing room, 22 is a blower for supplying cool air arranged on the back side of the freezing room 21, 23 is an automatic ice machine arranged in a part of the freezing room 21, 24 is an ice warm room, and 25 is a refrigerator room. Reference numerals 27 and 28 denote a left duct and a right duct, respectively, located at the back and in the corners of the refrigerator compartment 25, and reference numerals 27a and 28a denote a left discharge port and a right discharge port of cool air to the refrigerator compartment 25, respectively. 29
Is a bottle room for storing bottles such as beer bottles, and 30 is a vegetable room. D is a duct as a cool air control device,
The configuration will be described below. 31A is an installation part of the ice temperature damper 31, 32A is an installation part of the refrigeration damper 32, 33
And 34 are interior lights. The cool air cooled by the cooler and supplied by the blower 22 passes through an inflow duct communicating with the common path A as shown by an arrow in FIG. 3 and is then divided into an ice temperature duct and a refrigeration duct. (i.e., duct ice temperature) is Migikataru damper 31 for freezing goes into ice greenhouse 24 via the damper 31 when in the open state - left supplying cold air to preparative B ₁ and the bottle chamber 29 Le - are further bisected to preparative B _2. Further, the cold air in the other duct (ie, the refrigeration duct) bisected from the common path A is further divided into two via the refrigeration damper 32 and connected to the duct D when the refrigeration damper 32 is open. Refrigeration compartment 25 through discharge ports 27a, 28a of left and right ducts 27, 28
And are supplied to the bottle room 29 and the vegetable room 30 from the distal ends of the left and right ducts 27 and 28.

A concrete configuration of the cool air control device of the refrigerator shown in FIG. 3 to which the present invention is applied will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a front view of an essential part of the present invention, and FIG. 2 is a vertical sectional front view for explaining the flow of cold air. In each figure, the same reference numerals as those in FIG. It is shown attached. 31 is an ice temperature damper whose operation is controlled based on the temperature of the ice temperature chamber 24, which is a common path A.
A discharge port 31a communicates with the opening, a baffle plate 31b for opening and closing the discharge port 31a, a leaf spring 31c for urging the baffle plate 31b in the closing direction, and a motor 31d for operating the leaf spring, and the discharge port 31a is a motor. It is arranged so as to be higher than 31d. The ice temperature damper 31 is always on (Fig. 1).
The discharge port 31a is urged by the leaf spring 31c so that the baffle plate 3
When the damper open signal is supplied to the motor 31d, a force against the urging of the leaf spring 31c is applied to lift the upper part of the baffle plate 31b with the fulcrum as the fulcrum. 31a is opened. Similarly, the operation of 32 is controlled based on the temperature of the refrigerator compartment 25,
A refrigeration damper arranged alongside the ice temperature damper 31,
A discharge port 32a communicating with the common path A, a baffle plate 32b for opening and closing the discharge port 32a, a leaf spring 32c for urging the baffle plate 32b in the closing direction, and a motor 32 for operating the leaf spring.
d, and the discharge port 32a is disposed below the motor 32d. The refrigeration damper 32 normally causes the discharge port 32a to be urged by the leaf spring 32c so that the baffle plate 32b
When the damper open signal is supplied to the motor 32d, a force against the urging of the leaf spring 32c is applied to lift the lower part of the baffle plate 32b with the fulcrum Q as a fulcrum. Is to open. The discharge port 31a is disposed above the discharge port 32a and on the upstream side. Numerals 35 and 36 denote inverted U-shaped trap portions, which branch right and left downstream from the discharge port 32a of the refrigeration damper 32 and are disposed on the left and right sides of the damper 32 at substantially the same height as the damper 32. The tip (lower end) of each of the inverted U-shaped trap portions 35 and 36 is connected to the left duct 27 and the right duct 28, respectively. Reference numeral 37 denotes a damper 3 on the left side of the discharge port 31a of the ice temperature damper 31.
In inverted U-shaped trap portion disposed alongside the 1, distal end portion of the trap portion 37 is Le - communicates with preparative B _2. The route B ₁ communicated with the outlet 39 to the ice greenhouse 24.
Is a horizontal flow path in the present embodiment, but at least the outlet 39 is located above the discharge port 31a, and it is desirable to provide an inverted U-shaped trap portion also in this portion. . As shown in FIGS. 1 to 3, the interior lamps 33 and 34 have a space 35 surrounded by inner walls 35a and 36a for forming inverted U-shaped traps 35 and 36, respectively.
b and 36b. 38 is a freezer compartment 21
A passage communicating with the common path A formed by the cold air supply duct, a partition wall 40 for partitioning the freezing room 21 and the ice temperature room 24, a damper cover 41, and an inverted U-shaped trap portion 35c 35c. It is an outer wall for.

In the above configuration, when it is detected that the temperature inside the refrigerator compartment 25 and the ice compartment 24 has exceeded the set temperature, the control mechanism (not shown) controls each damper 31.
, And 32, the baffle plates 31b and 32b of the dampers 31 and 32 become P and Q, respectively.
Open as a fulcrum. However, each damper is independently controlled based on the temperature of the corresponding room. Therefore, the cool air sent from the blower 22 passes through the passage 3 connected to the common path A.
The cold air which has been divided into two from each of eight and reaches each of the dampers 31 and 32, and has come out of the discharge port 31a of the damper 31, is further divided into two.
One As shown in Figure 2 in double arrow Le - is supplied via the door B ₁ and air outlet 39 to the ice greenhouse 24, the other inverted U-shaped trap portion 37 and Le - Bottle chamber through the door B ₂ 29. Further, the cool air discharged from the discharge port 32a of the damper 32 is further divided into two as shown by a single arrow in FIG.
One is from the left rear corner via the inverted U-shaped trap portion 35 and the discharge port 27a of the duct 27, and the other is from the right rear corner via the inverted U-shaped trap portion 36 and the discharge port 28a of the duct 28, respectively. While being supplied to the refrigerator compartment 25, each duct 27
And 28 from the tip of the bottle room 29 and vegetable room 30 respectively
Supplied to

Next, the above-mentioned cold air is supplied to the ice greenhouse 2.
When the temperature in the refrigeration chamber 4 and the temperature in the refrigerator compartment 25 become lower than a predetermined temperature, the state is detected, and a control mechanism (not shown) is operated to send a damper closing signal to each of the dampers 31, 32. The baffle plate 31 of each damper 31, 32
The b and 32b are operated to close the respective discharge ports 31a and 32a, and the supply of cool air is stopped. When the discharge port is closed by the baffle plate, the supply of cool air to each chamber is stopped, so that warm air from the chamber corresponding to the closed discharge port rises on the principle of natural convection. Downstream side of 32 (discharge port side)
Are provided with inverted U-shaped trap portions 35, 36 and 37, respectively, so that cool air stays in these trap portions and the crest portions 35m, 36m, 3 of these inverted U-shaped trap portions are provided.
Warm air does not flow backward from 7m. Furthermore, if the refrigeration duct is arranged so as to branch right and left downstream of the damper as in the embodiment, and cool air is blown from both the left and right sides of the refrigeration compartment, the length of the chill air control device in the vertical direction is increased. Without this, cold air can be supplied evenly to the refrigerator compartment.

[0010]

According to the present invention, the discharge port of the ice temperature damper is arranged on the upstream side in the duct and the discharge port of the refrigeration damper is arranged on the downstream side, and the opening and closing direction of the ice temperature damper is arranged. And the opening / closing direction of the refrigeration damper is downward, so that the following excellent effects can be obtained. That is, when both the refrigeration damper and the ice temperature damper are simultaneously opened, a larger amount of cold air than the ice temperature chamber can be supplied from the refrigeration damper arranged downstream to the refrigeration chamber side. In addition to improving the cooling efficiency of the refrigerator compartment, the length of the cold air control device in the vertical direction can be shortened and the cool air control device can be made compact. In addition, the opening and closing direction of the ice temperature damper is directed upward and the opening and closing direction of the refrigeration damper is directed downward, thereby preventing the branched flow paths from interfering with each other. It is possible to reduce the size of the device by effectively utilizing the device.

[Brief description of the drawings]

FIG. 1 is a front view of a main part showing one embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a main part of the present invention.

FIG. 3 is a perspective view of a large refrigerator to which the present invention is applied, omitting parts on the left and right doors.

4A and 4B show a configuration of a conventional example, in which FIG. 4A is a vertical sectional front view of a main part, and FIG. 4B is a plan view of the main part.

[Explanation of symbols]

 D: Duct (cool air control device) 31: Damper for ice temperature 32: Damper for refrigeration 31a, 32a: Discharge port

──────────────────────────────────────────────────続 き Continuing from the front page (72) Takashi Kato 2-18-18 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Junichi Kubota 2-18-18 Keihanhondori, Moriguchi-shi, Osaka (56) References JP-A-62-268978 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F25D 17/08 308

Claims (1)

(57) [Claims] 1. A refrigerator room and an ice green room are formed in an insulated box.
In a refrigerator for guiding cool air cooled by a cooler to the above-mentioned two chambers through a duct, the duct comprises an inflow duct, a refrigeration duct branched from the inflow duct, and an ice temperature duct. The cooling duct is provided with a cooling damper whose operation is controlled based on the temperature of the refrigerator, and the ice temperature duct is provided with an ice temperature damper whose operation is controlled based on the temperature of the ice chamber. The discharge port is located upstream of the discharge port of the refrigeration damper, and the opening and closing direction of the ice temperature damper is upward.
Conversely, the opening / closing direction of the refrigeration damper is directed downward .