JPS60205160A - 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] [Technical Field of the Invention] The present invention relates to a refrigeration system, and particularly to a refrigeration system that surrounds a compressor with a heat insulating material to produce a humming sound and uses a heat vibrator to transport heat to the outside to heat the compressor. The present invention relates to a refrigeration device that can prevent

[Technical deficiencies and problems with the invention]

Compressors for modern refrigeration machines have become smaller and faster. As the compressor becomes smaller, the heat dissipation area of the outer wall becomes smaller, making it impossible to radiate heat sufficiently. Also, as the speed increases, noise during compressor operation becomes a problem.

In order to eliminate this noise, techniques have been developed to reduce the noise by surrounding the compressor with a sound absorbing material. Although this technology can produce better sound effects, it poses a problem in that it dissipates heat from the compressor to the outside. Conventionally, this problem was solved by providing a large space above the compressor for natural convection heat dissipation to dissipate the heat. It was very difficult.

Furthermore, in order to prevent the compressor from heating up, it may be possible to cool the compressor case using forced cooling means, but this will cause the following problem if the platform is too cool. In other words, when the compressor temperature is below 11°C and the pressure of the refrigerant in the compressor, such as fluorocarbon R-12, is balanced at 3 to 9, the oil in the compressor gets into the refrigerant between the lines and the refrigerant itself is also damaged. It becomes a state where it appears not to be affected, and the refrigeration capacity decreases. Therefore, m1ll1 which stops heat dissipation below a certain temperature and continues heat dissipation above a certain temperature.
It is desirable to have 11 functions.

(Object of the Invention) Therefore, an object of the present invention is to provide a refrigeration system that can reduce the operating noise of a compressor and prevent the compressor from overheating by transporting the heat of the compressor to the outside.

[Summary of the invention]

Embodiments of the refrigeration system according to the present invention will be described below with reference to the drawings.

FIG. 1 shows an example in which the present invention is applied to a refrigerator-freezer, and in the figure, reference numeral 1 indicates the main body of the refrigerator-freezer.
A freezer compartment 2 and a refrigerating compartment 3 are formed inside, and a partition wall 4 is provided between the two.

Further, a freezing door 5 is installed in the front of the freezer compartment 2, and a refrigerating door 6.7 is installed in the front of the refrigerator compartment 3.

The air in the freezer compartment 2 and refrigerator compartment 3 is cooled by a cooler in the refrigeration cycle, and a compressor 8 for compressing the refrigerant in the refrigeration cycle is installed at the rear lower part of the main body 1 of the refrigeration cold #1IIN. There is.

This combrella 1) 8 is buried inside a heat insulating material 9, and this heat insulating material 9 is designed to act as a sound absorbing material. Furthermore, the heat absorbing part 10a of the heat vibrator 10 is attached to the case of the compressor 8, and the heat dissipating part 10b of the heat vibrator 10 is led out to the outside along the back surface of the main body 1 of the refrigerator-freezer, and the outer frame is exposed to the outside air. is fixed.

As a result, the outer frame itself acts as a heat dissipating member. Various examples can be considered for the manner in which the heat vibrator 10 is attached to the case of the 4-8 case.

Next, these aspects will be explained with reference to FIGS. 2, 15 and 11.

The example shown in FIG.
11 outside the case of the compressor 8. There is an example in which the heat dissipating portion 10b is mounted on the heat dissipating plate 11 by winding the heat dissipating portion 10b by several turns.

In addition, in the example shown in FIG. 3, the central part of the vibrator 10 is a heat absorbing part 10a, this heat absorbing part iQa is placed on the heating surface of the case of the compressor 8, and the heat radiating parts 10b at both ends are
, 10b are attached to the heat sink 11 located at a higher position than the heating surface.

Furthermore, the example shown in FIGS. 4 and 5 is an example in which at least one bent portion 12 is provided between the J3 heat absorbing portion 10a and the heat radiating portion 10b in the example shown in FIG. and
According to such an embodiment, vibrations propagating from the case of the compressor 8 can be absorbed. The above bent part 1
As is clear from FIG. 5, it is preferable that the refrigerant 2 is inclined with respect to the horizontal plane, thereby making it possible to create a L that facilitates the flow of the refrigerant within the heat vibrator 101.

In addition, in the example shown in FIGS. 6 and 7, the portion where the heat pipe 10 is wound around the heating part of the compressor 8 is 3i.
This is an example in which it is covered with a thermally conductive filler 13 such as rubber, and a holding belt 14 is further attached thereon.

Furthermore, the example shown in FIG. 8 is the heat dissipation part 1, Ob of the heat pipe 10 in the example shown in FIG.

This corresponds to an example in which two heat pipes 10b are combined, and an endless heat pipe 10 is constructed as a whole, and the refrigerant within the heat vibrator 10 circulates within the loop, thereby further promoting the heat dissipation effect.

Figure 9 shows Comple2 1. + 8 heat dissipation Q [cat
/h) and the back area A (G) of the refrigerator.As is clear from this figure, assuming that the heat radiation from the compressor 8 is mQ-70Kcal/h, this amount of heat is radiated. The area A required for this is 0.65 mm. It is easy to incorporate a heat sink having this area into the back of a general household refrigerator.

The embodiment shown in FIG. 10 and FIG.
This is an example in which an on-off control valve for controlling the flow of heat is provided between the compressor 8 and the heat radiation part 10b to prevent overcooling of the compressor 8.

That is, in the example shown in FIG.
Is it possible to open and close the flow path inside the heat vibrator between the heat absorbing part 10a and the heat radiating part 10b? ! A magnetic valve 14°14 is incorporated,
These solenoid valves are opened and closed by output signals from a control circuit 15. This control circuit 15 detects the temperature of the case of the combrella 8 by -15
[t? A signal from the temperature control unit 16 is input, and when the temperature is above the set temperature, the solenoid valve 14 is opened, and when the temperature is below the set temperature, the solenoid valve 14 is opened. So that the lf magnetic valve 14 is connected to the well 111! 11111I is done. In such an embodiment, for example, if the refrigerant in the compressor is fluorocarbon-based R-12, the compressor oil enters the refrigerant at multiple levels when the refrigerant pressure in the compressor is 3 kg/ad and the compressor temperature is -1°C. Since the refrigerant itself is apparently not received and the refrigerating capacity is reduced, heat radiation can be stopped at temperatures below -11°C, and heat radiation can be carried out by opening the electromagnetic valve 14 above that temperature.

A heat-sensitive valve using a shape memory alloy can also be used in place of the electromagnetic valve 14 described above. FIG. 11 shows an example of this case, and in the figure, a heat-sensitive valve 18 using a shape memory alloy 17 is installed in the middle of the heat pipe 10 to detect the temperature of the compressor case. The shape memory alloy 17 expands and contracts, for example, fluorocarbon-based R-12.
In the case of refrigerant, it acts to stop driving the P1 pipe at temperatures below -1°C.

(Effects of the Invention) As is clear from the above description, according to the present invention, when a compressor of a refrigerator is buried in a heat insulating material,
Since the heat absorbing part of the vibrator was attached to the heating part of the Nbrezza and the heat dissipating part of the heat pipe was led to the heat radiation side, it was possible to prevent the Npretsu from overheating without having to provide a heat dissipation space above the Sbrezza as in the past. I can do it. In addition, if an on-off control valve is installed between the heat absorption part and the heat radiation part of the heat pipe, the heat pipe will be heated only when the temperature of the heating part of the compressor exceeds the set value. When the temperature is below the set value, the compressor can be prevented from being overcooled in the inactive state.

In addition, although the example of illustration mentioned above demonstrated the example which applied this invention to a refrigerator-freezer, this invention is applicable not only to this but also to an air conditioner and cold chain equipment.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing an example in which the present invention is applied to a refrigerator-freezer, Fig. 2 is a perspective view showing how a heat pipe is attached to a refrigerator, and Fig. 3 is a longitudinal sectional view showing an example in which the present invention is applied to a refrigerator. FIG. 4 is a perspective view showing another aspect, and FIG. 5 is a perspective view showing another aspect.
FIG. 121 is a side view of the same side, FIG. 6 is a perspective view showing another aspect of the greasing of the P1 to the vibrator, FIG. 7 is a cross-sectional view of the P1 to the vibe wearing part, and FIG. 8 is a view of the heat vibrator. A perspective view showing another aspect, FIG. 9, is a compressor b5I heat mQ (Kca
Fig. 10 is a perspective view showing another example of the present invention equipped with a control opening/closing valve, and Fig. 11 is a diagram showing the relationship between the back area of the refrigerator (l/h) and the back area Ar (m) of the refrigerator. FIG. 2 is a vertical cross-sectional view showing an example equipped with a heat-sensitive valve according to the present invention. 8... Compressor, 9... Heat insulating material, 10... Heat pipe, 10a... Heat absorption part, 10b... Heat radiation part, 11... Heat radiation plate, 12... Bent part, 13. ...Thermally conductive filled lv material, 14...Solenoid valve, 17...Shape memory alloy, 18...Thermosensitive valve. Applicant's agent Inomata Era L60 Book 7 Figure 7 is a continuation of Figure A, page 1

Claims (1)

[Claims] 1. In a refrigeration system in which a combrella (no) constituting a refrigeration->noicle is buried inside a heat insulating material, the heat absorbing part of the heat pipe is attached to the case of the compressor, while the heat dissipating part of the heat vib is connected to the outside air. 2. Claim 8R1, characterized in that the heat absorbing part of the heat vib is wound around the outer periphery of the case of the compressor.
Refrigeration equipment as described in section. 3. The refrigeration system according to claim 1, wherein the heat absorbing ends of the pair of heat vibrators are connected, and the heat absorbing parts of both heat vibrators hold the case of the compressor. 4. The refrigeration device according to claim 1, characterized in that at least one bent portion is formed between the heat absorbing portion and the heat radiating portion of the heat vibrator. 5. A special RF claim characterized in that the outer periphery of the heat vibrator in the area wound around the compressor case is coated with a thermally conductive filler, and the outer side of the heat vibrator is attached to the case using a holding belt. Refrigeration device according to item 1. 6. Claim 1, characterized in that the heat absorption end and the heat radiation end of the pair of heat vibrators are joined to form an endless configuration.
Refrigeration equipment as described in section. 7. Refrigeration apparatus 0 according to claim 1, characterized in that an on-off valve is provided between the heat absorbing part and the heat radiating part of the heat vibrator to immediately control the flow path in the heat pipe at a temperature higher than a set temperature. 8. The refrigeration system according to claim 7, characterized in that the control on-off valve is configured as a di-magnetic valve. 9. The control on-off valve is a heat-sensitive valve using a shape memory alloy. The refrigeration apparatus according to claim 71f1, characterized in that: