JPH0114863Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a refrigerant compression type refrigeration system using a cell-and-tube type evaporator and condenser.

A conventional device of this type is shown in FIG. In the figure, 1 is a refrigerant gas compressor, 2 is a cell-and-tube type evaporator, 3 is a cell-and-tube type condenser, 4 is an expansion valve, and 5 is a compressed gas from the refrigerant gas compressor 1. A discharge gas pipe leading to the condenser 3, 6 a condensed liquid pipe leading the condensed refrigerant liquid from the condenser 3 to the evaporator 2, 7 a suction gas pipe leading evaporated gas to the refrigerant gas compressor 1, 8 a refrigerant A distributor 9 evenly distributes the liquid horizontally, a diaphragm 9 to improve distribution, and a separator 10 to separate liquid droplets and gas.

Next, the operation will be explained. The refrigerant gas compressed to high temperature and high pressure by the compressor 1 is discharged through the discharge gas pipe 5.
It is cooled by a cooling pipe 12 which is led to a condenser 3 through which cooling water 13 flows inside, and is condensed and liquefied. The liquefied refrigerant accumulates at the bottom, is led to a condensate passage 6, and is injected into the evaporator 2 via the expansion valve 4. The refrigerant liquid that has entered the evaporator 2 is evenly distributed in the horizontal direction by the distributor 8 and the throttle 9, and takes heat from the cooling pipe 11 in which the brine 14 flows, boiling, evaporating, and gasifying.

The refrigerant gas from which droplets have been separated by the eliminator 10 is led to the compressor 1 through the suction gas pipe 7, forming a refrigeration cycle. In order to allow only liquid to flow, the condensate passage 6 must be connected below the condensate level. The liquid inlet to the evaporator 2 is injected from the bottom because heat exchange is good when the brine 14 and the frozen liquid flow in opposite directions.

Since the conventional apparatus is constructed as described above, a space for arranging the condensate pipe 6 between the base surface 15, the bottom of the condenser 3, the upper part of the condenser 3, and the lower part of the evaporator 2 is essential. Therefore, the height H of the device is increased by this space, which has the disadvantage of increasing the size of the device.

This idea was made to eliminate the above-mentioned drawbacks of the conventional technology, and by arranging the condensate pipe line 6 from the side of the condenser to the side of the evaporator, it is possible to connect the condensate pipe 6 between the base and the bottom of the condenser and between the top and bottom of the condenser. It is an object of the present invention to provide a small and lightweight refrigeration device that can be installed without providing a space for arranging condensate pipes between the lower parts of the evaporator.

An embodiment of this invention will be described below with reference to the drawings. In Fig. 2, the difference from Fig. 1 is that a condensate passage 6 is connected to the side of the condenser 3 and the side of the evaporator 2, and the refrigerant liquid is taken out from the side of the condenser 3 and injected from the side of the evaporator 2. By doing so,
Reference numeral 8 denotes a distributor 50 which is attached to the inner surface of the evaporator 2 corresponding to the side surface of the evaporator 2 to which the condensate pipe line 6 is connected and is equipped with a constriction part that opens toward the bottom of the evaporator 2.
is a push-up passage that is attached to the inner surface of the condenser 3 and pushes up the condensate at the bottom of the condenser 3 toward the condensate pipe 6 attached to the side of the condenser 3 by the pressure of the compressed gas.

Next, the operation will be explained. The refrigerant liquid accumulated at the bottom of the condenser 3 is guided to the evaporator 2 through a push-up passage extending from the bottom of the inner wall of the condenser 2 to the condensate pipe 6 on the side due to the pressure difference between the evaporator 2 and the condenser 3. It will be destroyed.

The refrigerant liquid injected into the side of the evaporator 2 is evenly distributed horizontally by a distributor 8 placed on the side of the inner surface of the evaporator 2, and passes through an aperture 9 opened toward the bottom of the evaporator 2 to form a refrigeration cycle. do.

In the above embodiment, the aperture 9 is opened toward the bottom of the evaporator to cause the refrigerant liquid to flow upward from the bottom of the evaporator 2 and to flow counter to the brine. Stretch to 9
may be opened upward as shown in FIG.

As described above, according to this invention, since the condensate pipe is arranged from the side of the condenser to the side of the evaporator, the device can be made small and lightweight, and the device can be easily transported, brought in, and maintained. It has the effect of

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view showing the concept of a conventional refrigeration system.
FIG. 2 is a sectional view showing the concept of a refrigeration system according to an embodiment of this invention. 1 is a compressor, 2 is an evaporator, 3 is a condenser, 4 is an expansion valve, 5 is a discharge gas line, 6 is a condensed liquid line, 7 is a suction gas line, 8 is a distributor, 9 is a throttle, 10 11 is a droplet separator, 11 is a cooling pipe, 12 is a cooling pipe, 13 is a cooling water, 14 is a brine, 50 is a push-up passage, 90 is a condensed liquid level, and 91 is an evaporated liquid level. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] In a refrigerant compression type refrigeration system in which a cell-and-tube evaporator and a condenser are arranged above and below, the side surface of the evaporator and the side surface of the condenser are connected by a condensate pipe, and A push-up passage extending from the bottom of the condenser to the condensate pipe on the side is formed on the inner wall of the condenser, and a distributor is formed on the inner side of the evaporator to distribute the refrigerant liquid supplied from the condensate pipe. A refrigerant compression type refrigeration device characterized by: