JPS58150760A - 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] [Field of Application of the Invention] The present invention relates to a refrigerator in which a compressor, a condenser, a pressure reducing device, an evaporator, etc. are connected by refrigerant piping to form a refrigeration cycle. Technology] An example of the refrigeration cycle of a conventional refrigerator for this food will be explained with reference to FIG.

The discharge side of the compressor 1 is connected to the evaporator 66 through a discharge pipe 2, and the outlet of the condenser 3 is connected to the inlet of the evaporator 66 by a liquid pipe 4 equipped with a pressure reducing device 5.
The outlet of the compressor 1 is connected to the suction side of the compressor 1 by a suction pipe 7. The condenser 3 has a cooling water inlet pipe 8 and a cooling water outlet pipe 9, and the evaporator 6 has a cold water inlet pipe 10 and a cold water outlet pipe 11.

The high-temperature, high-pressure gas refrigerant pressurized by the EE compressor 1 enters the amperage 3 through the discharge pipe 2, where it radiates heat to the cooling water and condenses to become a high-pressure liquid refrigerant. The high-pressure liquid refrigerant passes through the liquid distribution Yt4 and is led to the pressure reducing device 5, where it becomes a low-pressure gas-liquid mixed refrigerant, then enters the evaporator iS6, absorbs the heat of the cold water, evaporates, and becomes a low-pressure gas refrigerant. . The low-pressure gas refrigerant flows into the suction side of the compressor 1 via the suction pipe 7.

In conventional refrigerators, the fluid resistance of the suction pipe 7 is made as small as possible to increase the amount of refrigerant introduced into the compressed ml. However, since the fluid resistance of the suction pipe 7 cannot be eliminated, the amount of refrigerant sucked into the compressor 1 cannot be increased beyond a certain limit.

[Purpose of the invention]

An object of the present invention is to provide a refrigerator whose refrigerating capacity can be increased without increasing the size of the compressor itself.

[Summary of the invention]

In order to achieve the above object, this invention installs 12 superchargers in the middle of the suction pipe 7, as shown in FIG. This feature is characterized in that it allows the user to

[Embodiments of the invention]

The low-pressure gas refrigerant is pressurized by the supercharger 12 to become a high-density gas refrigerant and is sent to the compressor 1. In addition, the second
In the figures, the same reference numerals as in FIG. 1 represent the same things.

Next, different embodiments of the supercharger 12 are shown in FIGS. 3 and 4. This will be explained with reference to FIG.

The embodiment of FIG. 3 consists of the following structure. Suction pipe 21
An axial flow compressor 13 is installed in (corresponding to the suction pipe 7), and its shaft 14 is connected to the electric motor 1 through an electromagnetic clutch 15.
6. The shaft 14 is supported by a bearing 18, and a shaft sealing device 17 is attached to the pipe wall through which the shaft 14 passes.The electromagnetic clutch 1 is used only when supercharging is required.
In the embodiment shown in FIG. 4, in which the axial flow compressor 13 is driven by energizing the motor 16 and the supercharger chamber 1, the suction pipe 21 and the
9, which includes an axial compressor 13, an electric motor 16,
Shaft 14, electromagnetic clutch 15. It consists of a structure containing a bearing 18. In this embodiment, the shaft sealing device 1 of FIG.
7 becomes unnecessary.

The embodiment shown in FIG.
3. In the same figure, the third
Items with the same reference numerals as in Figures and Figure 4 are the same.
or something equivalent. The shaft sealing device 17 is attached to a partition wall between both the pipes 21 and 22. In this embodiment, the electric motor 16 of the previously described embodiment is not required.

〔Effect of the invention〕

According to the invention described above, the refrigerating capacity can be increased without increasing the size of the compressor itself, and the refrigerating capacity can also be controlled by controlling the operation of the supercharger. can.

[Brief explanation of the drawing]

Fig. 1 is a system diagram showing an example of the refrigeration cycle of a conventional refrigerator, Fig. 2 is a system diagram showing a refrigeration cycle of a refrigerator according to the present invention, and Figs. 3, 4, and 5 are based on this invention. FIG. 3 is a cross-sectional view showing different embodiments of a supercharger. 1... Compressor 3... Condenser 5... Pressure reduction device
6... Evaporator 7... Suction pipe 12... Supercharger 13... Axial flow compressor 14... Shaft 15... Electromagnetic clutch 16... Electric motor 17... Shaft sealing device
18... Bearing 19... Supercharger room 20... Axial flow turbine 21... Suction pipe 22... Discharge pipe

Claims (1)

[Claims] A refrigerator in which the suction side of a compressor and an evaporator are connected by a suction pipe, characterized in that a supercharger is installed in the middle of the suction pipe to increase the amount of refrigerant introduced into the compressor.