Refrigerator

Abstract: A refrigerator capable of controlling supply of cool air into a fresh food compartment (5) and a vegetable chamber (10) is disclosed. A cool air duct (11) is formed at a rear part of the fresh food compartment (5). The cool air duct (11) has discharge ports (16a) for supplying the cool air into the fresh food compartment (5) and the vegetable chamber (10). The discharge ports (16a) are opened and closed by an opening/closing device (20; 30). The device (20; 30) opens/closes the discharge ports (16a) to the fresh food compartment (5) and the vegetable chamber (10) simultaneously. Therefore, when the supply of the cool air into the fresh food compartment (5) is stopped, the supply of the cool air into the vegetable chamber (10) is stopped too, and thereby the overcooling of the vegetable chamber (10) is prevented.

Description: The present invention relates to a refrigerator comprising a cooling section, a vegetable section, a duct having apertures opening respectively into the cooling or vegetable sections for supplying cooling air to said sections and first flow control means for selectively opening and closing the or each aperture opening into the cooling section. As shown in Figure 1, a refrigerator has a body 1 forming a freezing compartment 2 and a fresh food compartment 5, first and second doors 3, 6 for opening and closing the freezing compartment 2 and the fresh food compartment 5 respectively. An evaporator 7 for generating cool air and a fan 8 for supplying the cool air generated by the evaporator 7 into the cooling compartment 2 and 5 are installed at the rear part of the freezing compartment 2. The fresh food compartment 5 is partitioned into a plurality of spaces by a plurality of shelves 9. The lowermost space among the partitioned spaces is used as a vegetable chamber 10 for storing vegetables. In general the vegetable chamber 10 is maintained to a temperature somewhat higher than the temperature of the fresh food compartment 5. At the rear part of the fresh food compartment 5, a duct member 16 being formed with a plurality of cool air discharge ports 16a is installed. The duct member 16 forms a cool air duct 11 vertically at the rear part of the fresh food compartment 5. The cool air discharge ports 16a are formed at positions corresponding to the spaces partitioned by the shelves 9. A part of the cool air blown by the fan 8 flows into the cool air duct 11, and the cool air flowing into the cool air duct 11 is discharged into the fresh food compartment 5 through the cool air discharge ports 16a. Then, the food placed on the shelves 9 is cooled. A guide device 13 for guiding the cool air flowing into the cool air duct 11 toward the cool air discharge ports 16a is installed in the cool air duct 11. The cool air discharge ports 16a are formed at the bottom and front of the duct member 16. The cool air discharged through the cool air discharge ports 16a enters the fresh food compartment 5, and the cool air discharged through the cool air discharge ports 16a formed at the bottom of the duct member 16 is supplied to the vegetable chamber 10. Thus, food stored in the fresh food compartment 5 and the vegetables stored in the vegetable chamber 10 are cooled. The supply of the cool air into the fresh food compartment 5 is controlled by a separate opening/closing device (not shown). That is, the refrigerator is equipped with an opening/closing device for opening/closing the cool air discharge ports 16a. The opening/closing device opens the cool air discharge ports 16a to supply the cool air into the fresh food compartment 5 when the temperature of the fresh food compartment 5 is high, and closes the cool air discharge ports 16a to stop supplying the cool air when the temperature of the fresh food compartment 5 is low. Thus, the temperature of the fresh food compartment 5 is maintained at a desired temperature by opening/closing the cool air discharge ports 16a according to the temperature of the fresh food compartment 5 as described above. However, in such a conventional refrigerator, although the supply of cool air is stopped by the opening/closing device when the temperature of the fresh food compartment 5 is lower than the desired temperature, the vegetable chamber 10 is continuously supplied with the cool air through the cool air discharge ports 16a formed at the lower side of the duct member 16, so there is a problem that the vegetables stored in the vegetable chamber 10 may be overcooled. The present invention has been proposed to overcome the above described problems in the prior art, and accordingly it is the object of the present invention to provide a refrigerator which can prevent the overcooling of the vegetables by opening/closing all the discharge ports opened in a cooling compartment and a vegetable chamber. US-A-5398599 discloses a refrigeration apparatus which does not have a vegetable section. The lower part of the apparatus is occupied by kimchi making chamber. This chamber can be heated and cooled for different phases of kimchi production. During heating, the path to a source of cooling air is blocked so that the operational efficiency of other parts of the apparatus is not impaired by hot air escaping from the kimchi making chamber. A refrigerator according to the present invention is characterised by second flow control means for selectively opening and closing the or each aperture opening into the vegetable section and the first and second flow control means sharing an actuating motor; the first flow control means comprising an actuator member having a rack portion drivingly engaged by a pinion, a respective flap associated with each aperture opening into the cooling section and a respective guide means for guiding movement of a respective flap, the or each flap being hingedly coupled to the actuator member and engaging the respective guide means such that, when the actuator member is driven by the pinion, the or each flap pivots between an aperture closed position and an aperture open position; and the second flow control means comprising an actuator member having a rack portion drivingly engaged by the pinion, a respective flap associated with each aperture opening into the vegetable section and a respective guide means for guiding movement of a respective flap, the or each flap being hingedly coupled to the actuator member and engaging the respective guide means such that, when the actuator member is driven by the pinion, the or each flap pivots between an aperture closed position and an aperture open position. Preferably, the or each aperture opening into the cooling section is in a first wall of the duct and the or each opening into the vegetable section is in a second wall of the duct, the first and second walls not being parallel to each other. Embodiments of the present invention will now be described, by way of example, with reference to Figures 2 to 4 of the accompanying drawings, in which:- Figure 1 is a side sectional view of a prior art refrigerator; Figure 2 is a side sectional view of a refrigerator according to the present invention; and Figures 3 and 4 are enlarged side views of the opening/closing device shown in Figure 2. In the following description, parts common to the refrigerator of Figure 1 and the refrigerators described below will now be described again. However, the same reference numbers will be employed. Referring to Figures 2, 3 and 4, a device 20 for opening/closing the cool air discharge ports 16a is installed in the cool air duct 11. The opening/closing device 20 comprises, as shown in Figures 3 and 4, a plurality of opening/closing members 21, a pair of links 22a, 22b connected with the opening/closing members 21, and a pinion 24 for driving links 22a, 22b. The opening/closing members 21 are pivotably mounted near the cool air discharge ports 16a formed in the front of the duct member 16 and at the bottom of the duct member 16. The opening/closing members 21 are disposed at positions corresponding to the cool air discharge ports 16a. The opening/closing members 21 are hingedly mounted on the links 22a, 22b. A plurality of guide grooves 21a for guiding the pivoting of the links 22a, 22b are formed at a side of the duct member 16. When one link 22a is moved vertically and the other link 22b is moved horizontally, the opening/closing members 21 are guided by the guide grooves 21a which are bent, and accordingly the opening/closing members 21 pivot. The links 22a, 22b are formed with respective racks 23a, 23b. The pinion 24 engages the racks 23a and 23b. The pinion 24 is connected to the shaft 25 of a driving motor (not shown), and is rotated by the driving motor. When the driving motor rotates the pinion 24, the links 22a, 22b are moved. The operation of the above-described refrigerator will now be described. The refrigerator senses the temperature in the freezing compartment 2 using a temperature sensor which is not shown. When the temperature of the freezing compartment 2 rises, the refrigerator performs a cooling operation. When this happens, cool air is generated by the evaporator 7 and blown by the fan 8 into the freezing compartment 2. A part of the cool air flows into the cool air duct 11 and is discharged through the cool air discharge ports 16a. Then, the cool air is supplied to the fresh food compartment 5 and the vegetable compartment 10. In this situation, the opening/closing device 20 maintains open state of the cool air discharge ports 16a as shown in Figure 3. When the temperature of the fresh food compartment 5 is sensed by the temperature sensor (not shown) to fall down below a desired temperature, the opening/closing device 20 begins to operate. The driving motor (not shown) drives the pinion 24 to move the links 22a, 22b. Then the opening/closing members 21 pivot closing the cool air discharge ports 16a, as shown in Figure 4. In this situation, the opening/closing members 21 close all of the cool air discharge ports 16a opened in the fresh food compartment 5 and the vegetable chamber 10. Therefore, the supply of the cool air to the fresh food compartment 5 and the vegetable chamber 10 is stopped, and the overcooling of the vegetables stored in the vegetable chamber 10 is prevented. When the temperature of the fresh food compartment 5 rises to a higher temperature than the desired temperature, the opening/closing device 20 operates again, causing the opening/closing members 21 to open the cool air discharge ports 16a, as shown in Figure 3. Consequently, the fresh food compartment 5 and the vegetable chamber 10 are supplied with the cool air.

Claims: A refrigerator comprising a cooling section (5), a vegetable section (10), a duct (11) having apertures (16a) opening respectively into the cooling or vegetable sections (5, 10) for supplying cooling air to said sections (5, 10) and first flow control means (20) for selectively opening and closing the or each aperture (16a) opening into the cooling section (5), characterised by : second flow control means (20) for selectively opening and closing the or each aperture (16a) opening into the vegetable section (10) and the first and second flow control means (20) sharing an actuating motor; the first flow control means (20) comprising an actuator member (22a) having a rack portion (23a) drivingly engaged by a pinion (24), a respective flap (21) associated with each aperture (16a) opening into the cooling section (5) and a respective guide means (21a) for guiding movement of a respective flap (21), the or each flap being hingedly coupled to the actuator member and engaging the respective guide means (21a) such that, when the actuator member (22a) is driven by the pinion (24), the or each flap (21) pivots between an aperture closed position and an aperture open position; and the second flow control means (20) comprising an actuator member (22b) having a rack portion (23b) drivingly engaged by the pinion (24), a respective flap (21) associated with each aperture (16a) opening into the vegetable section (10) and a respective guide means for guiding movement of a respective flap (21), the or each flap (21) being hingedly coupled to the actuator member (22b) and engaging the respective guide means such that, when the actuator member (22b) is driven by the pinion (24), the or each flap (21) pivots between an aperture closed position and an aperture open position. A refrigerator according to claim 1, wherein the or each aperture (16a) opening into the cooling section (5) is in a first wall (16) of the duct (11) and the or each opening into the vegetable section (10) is in a second wall (16) of the duct (11), the first and second walls (16) not being parallel to each other.

Inventors: GONG I-GU, HUR YANG-BEOM, GONG, I-GU, HUR, YANG-BEOM
Applicants: SAMSUNG ELECTRONICS CO LTD, SAMSUNG ELECTRONICS CO., LTD.
Application year: 1998
Main classification: F25D11
IPC codes: F25D17, F25D11, F24F13