JPS6166061A - Evaporator for freezing-refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an evaporator for freezers and refrigerators.

BACKGROUND ART Conventional e-refrigerators use a main evaporator to cool the freezer compartment and an auxiliary evaporator to cool the refrigerator compartment to cool the freezer compartment and the refrigerator compartment. They were connected by a conduit. However, such conventional devices have a large number of joints, which poses a high risk of refrigerant leakage.Due to the large number of parts, tearing them is extremely troublesome and time-consuming, and manufacturing costs are high. was expensive. In addition, a wide installation requires space, which reduces the refrigeration capacity and refrigeration capacity.Especially in an evaporator equipped with meandering refrigerant pipes, it is necessary to narrow the spacing (pitch) of the refrigerant passages. However, there was a problem in that the cooling efficiency was low.

OBJECT OF THE INVENTION The object of the invention is to solve the above-mentioned problems and to provide a refrigerator/freezer which can cool the freezer compartment and the refrigerator with one evaporator, and is therefore very compact and requires less space for installation. , the refrigeration capacity and refrigeration capacity can be increased accordingly, and since there are very few joints and a small number of parts, the design can be made very easily and inexpensively, and the leakage of refrigerant can be prevented. It is an object of the present invention to provide an evaporator for a cold refrigerator that has very little risk and can improve cooling performance by narrowing the pitch of the refrigerant passages.

Structure of the Invention In order to achieve the above object, the present invention provides an extruded material made of an upper horizontal part disposed in a freezing compartment, a lower horizontal part disposed in a refrigerator compartment, and a vertical part connecting the two. It is equipped with a lid generator body, and refrigerant passages that open on both left and right sides are provided in the upper and lower horizontal parts of the evaporator body. A refrigeration system in which a meandering refrigerant passage is formed as a whole by being communicated with the left and right alternately on both sides.
The gist is evaporators for refrigerators.

Example Embodiments of the invention will be described below with reference to the drawings.

In this specification, front and back and left and right are based on Figure 1, where the front refers to the right side of Figure 1, the rear refers to the left side of Figure 1, the left refers to the front side of the drawing sheet, and the right refers to the back side of the same figure. shall mean.

In FIGS. 1 to 3 showing the first embodiment of this invention,
The evaporator (4) according to this invention is suitable for freezing and refrigerating
A cross section consisting of an upper horizontal part (6) located in the freezer compartment (2) of t+, a lower horizontal part (7) located in the refrigerator compartment (3), and a vertical part (8) connecting the two. The evaporator body (5) is approximately U-shaped and made of extruded aluminum material, and the refrigerant passages (9a) that are open on both left and right sides are provided in the upper horizontal part (6) and the lower horizontal part (7) of the evaporator body (5). The left and right ends of the adjacent refrigerant passages (9a) are sequentially communicated with each other alternately on the left and right sides of the evaporator body (5), thereby forming a meandering refrigerant passage (9a) as a whole.
) is formed.

As shown in FIG.
) and the refrigerator compartment (3), and a synthetic paddle fat cover (Ill) is fitted over the upper surface of the evaporator (4) on the freezer compartment (2) side. At the same time, a plate O2 is arranged below the evaporator (4) as an exposure plate.And eight refrigerant passages (9a) are provided in the upper horizontal part (6) on the side of the freezer compartment (2). In contrast, the refrigerator room (
A smaller number of six refrigerant passages (9a) are provided in the lower horizontal portion (7) on the side 3).

As shown in Figures 2 and 3, oval plate fitting recesses (I) are provided on both left and right sides of the evaporator body (5) so that the front and rear positions are shifted from each other, and each plate fitting recess is The ends of two refrigerant passages (ga) communicate with the fourth part a3.The ends of the refrigerant passages (9a) adjacent to the evaporator body (5) are connected to each other inside each plate fitting recess (131). A cover plate 1 is made of an aluminum O-brazing sheet, which has a communication groove α4 bored therein for the purpose of connecting the plate, and has a brazing metal layer on the inner surface in each of the four plate-fitting portions 1131.
51 is fitted, and the inner surface of the peripheral edge of each cover plate (IS) is brazed to the bottom peripheral edge of the recess 03, thereby creating a meandering refrigerant passage (9) in the evaporator (4) as a whole.
is formed. A refrigerant inlet pipe L161 is located at the rear end of the left side of the upper horizontal part (6) of the evaporator body (51), and a refrigerant discharge pipe (171 is located at the rear end of the left side of the lower horizontal part (7), respectively). 9) is connected to both ends of the 9).

In addition, the plate fitting recess 113 and the cover m-play)t
151 is shown in an oval shape when viewed from the side, that is, a so-called oval shape, but it may have other shapes such as a rectangle or a square. Each plate uS may be made of aluminum plate and may be joined by welding.

Further, substantially U-shaped aluminum side plates having a length approximately equal to the full length of these sides may be fixed to both the left and right sides of the evaporator body (5) by brazing. Furthermore, the ends of adjacent refrigerant passages (9a) may be connected by a U-shaped bend pipe. Further, although the refrigerant passage (9a) has a circular cross section, it may have other shapes such as a circular shape, a rectangular shape, or a square shape.

4 and 5 show a second embodiment of the invention. Here, the difference from the first embodiment is that the communication groove (141) is not provided in the plate fitting recess a3 on both left and right side surfaces of the evaporator body (5), and the cover plate (151 and Gi It is located at the point where a recess (la) is provided for communicating the ends of the matching refrigerant passages (9a).In this case, the plate fitting four parts αJ
The same edge of the cover tatami plate f151 is fitted inside,
The inner surface of the peripheral edge of each cover plate is brazed to the bottom peripheral edge of the four parts α3, and a meandering refrigerant passage (9) is formed in the evaporator (4) as a whole. Also, the evaporator (4)
There is a synthetic resin cover u11 on the top and bottom sides of the
z is not located, and the upper surface of the upper horizontal part (6) and the lower surface of the lower horizontal part (7) of the evaporator main body (5) are inside the freezer compartment (2) and the refrigerator compartment (3), respectively. exposed.

The other points of this second embodiment are the same as those of the first embodiment, and the same parts are given the same reference numerals in the drawings.

FIG. 6 shows a third embodiment of the present invention, in which a large number of tongue-like fins are cut and raised in parallel on the lower surface of the lower horizontal portion (7) of the evaporator body (5). ing. In this case, after cutting and raising the tongue-like fin,
The plate LI51 may be fitted into the plate fitting recesses αJ on both left and right sides of the evaporator main body (5) and joined by welding.

FIG. 7 shows a fourth embodiment of the present invention, in which a large number of band-like fins 011 are provided on the lower surface of the lower horizontal portion (7) of the evaporator body (5) in the length direction of the evaporator body (5). They are arranged in parallel. These fins (211 are the evaporator body (5)
) is integrally formed during extrusion molding.

Figure S Rin-◆ shows a fifth embodiment of the present invention, in which corrugated Φ fins are provided on the lower surface of the lower horizontal portion (7) of the evaporator body (5) when viewed from the side. . In this case, plate four and corrugated fin (2)
Both are made of aluminum 1 brason writing sheet,
After these are combined into the evaporator body (5), they may be joined together by vacuum brazing. In addition, in this fifth embodiment, the upper horizontal part (6) on the side of the freezer compartment (2) is
In contrast, there are four refrigerant passages (9a) in the lower horizontal part (7) on the side of the refrigerator compartment (3).
a) is provided.

In the evaporators (4) of the third to fifth embodiments described above, the fins are provided on the lower surface of the lower horizontal portion (7), so that the cooling efficiency in the refrigerator compartment (3) is particularly excellent. It is something.

Although the illustrated evaporator (4) is approximately U-shaped when viewed from the side, the evaporator (4) is not limited to this;
The part (8) perpendicular to +71 may have a substantially rough shape when viewed from the side located in the middle of these widths. In addition, the pitch of the refrigerant passage (9a) can be changed as appropriate depending on the use of the refrigerator (1), and the pitch of the evaporator (
When fins are attached to 4), the pitch thereof can be changed freely, and the shape of the fins is not limited to that shown in the drawings, but may have any other suitable shape.

Effects of the Invention As described above, the evaporator for freezers and refrigerators according to the present invention has an upper horizontal part (6) disposed in the freezer compartment (2) and a lower horizontal part (7) disposed in the refrigerator compartment (3). ) and a vertical part 1B) that connects the two. Refrigerant passage (9
a), and the left and right end portions of the adjacent refrigerant passages (9a) are sequentially communicated alternately on the left and right sides of the evaporator body (5), thereby creating a meandering refrigerant as a whole. It has a passageway (9) that connects the freezer compartment (2) of the freezer/refrigerator (1) and the refrigerator'! (31 and 1
It can be cooled by two evaporators (4) and is therefore very compact and requires less space for installation.
Freezing capacity and refrigeration capacity can be increased accordingly. Furthermore, since the number of joints and the number of parts are very small, the evaporator (4) can be manufactured very easily and inexpensively, and there is very little risk of refrigerant leakage. Furthermore, the pitch of the refrigerant passages (9a) can be narrowed, resulting in the effect that cooling performance can be improved.

[Brief explanation of the drawing]

The drawings show five embodiments of this invention. Fig. 1 is a partial sectional view of a freezer/refrigerator showing the usage state of the first embodiment, and Fig. 2 is an enlarged view of the evaporator of the first embodiment. Perspective view, 3rd
The figure is an enlarged sectional view taken along the line m-m in Figure 2, Figure 4 is a partial sectional view of the freezer/refrigerator showing the length of the second embodiment, and Figure 5
The figures are an enlarged sectional view taken along line 1iv-v in Fig. 4, Fig. 6 an enlarged perspective view of the evaporator of the third embodiment, Fig. 7 an enlarged perspective view of the evaporator of the fourth embodiment, and Fig. 8. is an enlarged perspective view of the evaporator of the fifth embodiment. ill -e - Freezing/refrigerating H, (2)...O Freezer compartment,
(3)0・Refrigerating room, (4)・Evaporator, (5)・Fist・
Evaporator body, (6)・curvature-upper horizontal part, (7)...lower horizontal part, +81---vertical part, +91 (9B)・
・・Refrigerant passage, UL・・Φ insulation partition wall, I・・φ communication hole, u9/0 plate, ■・・tongue fin, (21)・
・Φ band-shaped fin, ・ee Nicolet fin. Other 4 people Figure 4 15: Flute No. 5 A 18. Fig. 7, 1o and 4e 76°

Claims (1)

[Claims] Evaporator made of extruded material, consisting of an upper horizontal part (6) located in the freezing compartment (2), a lower horizontal part (7) located in the refrigerator compartment (3), and a vertical part (8) connecting the two. The main body (
5), with refrigerant passages (9a
), and the left and right ends of the adjacent refrigerant passages (9a) are sequentially communicated with each other alternately on the left and right sides of the evaporator body (5), thereby forming a meandering refrigerant passage as a whole. (9) An evaporator for freezers and refrigerators.