JPS631164Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a refrigerator that efficiently sends cold air from a cold air outlet to a secondary cooler to improve the cooling effect.

In general, a cold air forced circulation type refrigerator-freezer as shown in Fig. 1 has a cooling chamber 2 at the back of the freezing chamber 1, and a primary cooler 3, a fan 4, etc. are housed in this cooling chamber 2. As the fan 4 rotates, the air cooled by the primary cooler 3 is blown out into the freezer compartment 1 from the cold air outlet 5 at the top, and sucked in from the cold air intake port 6a at the bottom for forced circulation. Cool 1. Inside this freezer compartment 1, there is an L-shaped 2
The applicant has already proposed a method of installing a secondary cooler 6 to achieve even more efficient cooling. However, in this L-shaped secondary cooler 6, the refrigerant sealed in the closed circuit network 22 as an internal refrigerant passage takes heat from the refrigeration load in the horizontal plate part 9 and vaporizes, and this vaporized refrigerant It moves to the rising plate part 10, is cooled again by cold air, condenses into liquid, and returns to the horizontal plate part 9 by gravity, acting as a thermosiphon. However, in the previously proposed secondary cooler 6, a vent hole 24 is opened in the upright plate portion 10 and a cold air guide vane 23 is formed, but the vent hole 24 is limited by the closed circuit network 22 and is not sufficient. The closed circuit network 22 could not be formed to a size large enough to introduce cold air, and the cold air also collided with the closed circuit network 22, further impairing efficiency. Further, in order to guide cold air onto the horizontal plate part 9, it was necessary to provide ventilation holes 24a in the horizontal plate part 9 as well. Therefore, there was a problem in that the features of the secondary cooler could not be fully utilized.

The present invention was developed in view of the above points, and has a closed circuit network that communicates between the horizontal plate part and the rising plate part, a refrigerant is sealed inside, and a ventilation hole is bored in the rising plate part. to form an L-shaped secondary cooler, and in which the vent hole of the rising plate portion faces the cold air outlet, between the vent hole and the cold air outlet,
A cold air guide plate is interposed to introduce cold air into the horizontal plate portion through ventilation holes. Therefore, the cold air is reliably introduced onto the horizontal plate portion of the secondary cooler, and the cooling effect is improved by the cooling power of this introduced cold air and the cooling power that is thermally conducted by the secondary cooler itself. be able to.

Hereinafter, embodiments of the present invention will be described with reference to FIG. 3 and the following drawings. In these figures, 11 is a refrigerator main body, and the inside of this main body 11 is divided into an upper freezer compartment 1 and a lower refrigerator compartment 13 by a partition plate 12. An upper door 14 and a lower door 15 are pivotally attached to the front surface of the door so as to be openable and closable. A cooling chamber 2 is provided on the back side of the freezing chamber 1 and is divided by a rear partition plate 16 and a back plate 17 of the main body 11. A compressor and a capillary tube (not shown) are installed in the cooling chamber 2. A primary cooler 3, a fan 4, a fan motor 18, an accumulator (not shown), etc., which perform a cooling effect by means of a cooling system, are housed. At the upper part of the rear partition plate 16, in a portion facing the fan 4 and on both sides thereof, a cold air outlet 5 having guide blades 19 cut and raised integrally is formed. A cold air guide plate 20 is attached to the front of this cold air outlet 5,
Facing this cold air guide plate 20, a secondary cooler 6 consisting of a thermosiphon type heat pump is removably placed on support bars 21, 21 provided on both sides of the freezer compartment 1. As shown in FIG. 6, this secondary cooler 6 uses two rectangular plates made of a material with good thermal conductivity such as aluminum or copper. Carbon powder or the like is applied to the opposing surface portions, which are then rolled and welded at high temperatures and bent into an L shape to form a horizontal plate portion 9 and a rising plate portion 10, and a closed circuit coated with the carbon powder. The net 22 portion is expanded to form a roll bond type, and a refrigerant (for example, a fluorocarbon refrigerant such as R12) is sealed and sealed within the closed circuit net 22. At this time, it is desirable that the mesh of the closed circuit network 22 be formed in a dense state in the horizontal plate part 9 and in a sparse state in the rising board part 10.

In the rising plate part 10 of the secondary cooler 6, the part without the closed circuit network 22 is cut and cut to form cold air guide vanes 23 and ventilation holes 24, and on the front edge of the horizontal plate part 9, A decorative edge 25 made of plastic or the like is fitted.

As shown in FIG. 7, the cold air guide plate 20 includes:
It is bent into an L-shape to form a horizontal cold air guide part 36 and a vertical part 27. The cold air guide part 36 is formed with a mounting part 26 having a stepped part, and this vertical part 27
Left and right positioning pawls 28, 28 and locking pawls 29, 29, 29 whose positions are shifted up and down are integrally formed. These left and right positioning claws 28, 28 and locking claws 29, 29, 29 are press-fitted and fixed into the cold air outlet 5 as shown in FIG.

In addition, stoppers 32, 32 are provided slightly forward of the receiving beams 21, 21 to prevent the secondary cooler 6 from slipping out after installation. In addition, inner doors 34, 34 are provided on the front surface of the freezer compartment 1, and storage grooves 3 of the inner door 33 are provided on both side walls of the freezer compartment 1.
5 is provided.

In such a configuration, the cold air blown out from the cold air outlet 5 of the cooling chamber 2 is introduced into the ventilation hole 24 by the cold air guide plate 20.

Next, in the example shown in FIG. 5, since the depth of the freezer compartment 1 is deep (the storage capacity is large), the width of the cold air guide portion 36 of the guide plate 20 is increased. On the other hand, if the depth is shallow (storage capacity is small), the cold air guide portion 36 of the cold air guide plate 20 as shown in FIG.
narrow the width. In this way, the dimensions of the secondary cooler 6 can be standardized regardless of the capacity of the refrigerator, and can be adjusted simply by replacing the guide plate 20.

In the above embodiment, an example was shown in which the cold air guide plate 20 was fixed to the side of the cold air outlet 5, but as shown in FIG. may be provided.

Since the present invention is configured as described above, the cold air from the cold air outlet is reliably introduced into the ventilation hole of the secondary cooler through the cold air guide plate, and the secondary cooler absorbs this introduced cooling power. The cooling effect can be further improved by the cooling power that is thermally conducted by the secondary cooler itself.

In addition, the cold air guide section has a width that corresponds to the depth of the freezer compartment, so it can be used regardless of the capacity of the refrigerator.
The secondary cooler can be standardized, and since it has left and right positioning claws and locking claws, it is easy to install and remove, and it is possible to completely wipe away dirt in the freezer compartment.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of the previously proposed refrigerator, Fig. 2 is a perspective view of the secondary cooler of the above, Fig. 3 is a sectional view of an embodiment of the refrigerator according to the present invention, and Fig. 4 is a sectional view of the same as the above without the door. 5 is an enlarged sectional view of the main parts of the present invention, FIG. 6 is a perspective view of the secondary cooler, FIG. 7 is a perspective view of the guide plate, and FIGS. 8 and 9 are the main parts of the present invention. FIG. 3 is a sectional view of another embodiment of the invention. 1...Freezing room, 2...Cooling room, 3...Primary cooler, 4...Fan, 5...Cold air outlet, 6...2
Secondary cooler, 9...Horizontal plate part, 10...Rising plate part, 11...Refrigerator body, 19...Guide blade, 2
0...Cold air guide plate, 21...Socket, 22...Closed circuit network, 23...Cold air guide vane, 24...Vent hole,
26... Placement part, 27... Vertical part, 28... Right and left positioning claws, 29... Locking claws, 32... Stoppers.

Claims (1)

[Scope of utility model registration request] It has a closed circuit network that communicates between the horizontal plate part and the rising plate part, a refrigerant is sealed inside, and a ventilation hole is formed in the rising plate part to form an L-shaped secondary cooler,
In the refrigerator in which the ventilation hole of the rising plate part faces the cold air outlet, a cold air guide plate is interposed between the ventilation hole and the cold air outlet for introducing cold air into the horizontal plate part through the ventilation hole. , this cold air guide plate is provided with a cold air guide part having a width corresponding to the depth of the freezer compartment and a secondary cooler mounting part, and a cold air guide part having a width corresponding to the depth of the freezer compartment, and the cold air guide plate is provided in the cold air guide part and has at least one of the ventilation holes and the cold air outlet. A refrigerator comprising a left and right positioning claw and a locking claw that engage with either one of the left and right positioning claws.