JPS5930369Y2 - Heat exchanger for regenerator refrigeration equipment - Google Patents

Description

[Detailed explanation of the invention] This invention is a cold storage type used in refrigerator cars, etc., which stores cold by freezing the freezing pline in the pline tank installed inside the refrigerator when parked, and uses the latent heat of fusion to cool the inside of the refrigerator when driving. It relates to heat exchangers used in refrigeration equipment, and uses a cylindrical pline tank in particular as a pline tank.
In a system in which a large number of these are installed in a row and a refrigerant evaporation pipe is inserted into the pline tank for communication, and a freezing pline is sealed in the pline tank, the gap formed between the pline tank and the refrigerant evaporation pipe is A sealing stopper made of elastic material such as rubber is fitted to seal the pline tank, and the change in internal pressure of the pline tank due to changes in volume due to freezing and thawing of the pline is prevented from occurring in the pline tank and the refrigerant in the sealing stopper. It is characterized in that it is adjusted by moving up and down along the evaporation tube.

Hereinafter, one embodiment of this invention will be described in detail with reference to the drawings. FIG. 1 is a partially cutaway perspective view of a heat exchanger according to this invention, in which 1 is a cylindrical pline tank; Reference numeral 2 denotes a holding frame for holding the prine tanks 1, in which a large number of prine tanks 1 are arranged in rows, each having a button, and a refrigerant evaporation pipe 3 for freezing the plines is inserted through each prine tank 1 to form a communicating pipe. has been done.

The refrigerant evaporation pipe 3 is connected to a refrigeration cycle including a compressor, a condenser, etc. (not shown).

Both the prine tank 1 and the refrigerant evaporation pipe 3 are made of a metal material with high thermal conductivity such as copper or aluminum alloy, and each joint is airtightly joined by brazing or the like.

As shown in FIGS. 2 and 3, a freezing pline 4 is housed in the pline tank 1, and the prine tank 1
A sealing plug 5 made of an elastic material such as rubber is fitted into the gap formed by the refrigerant evaporation tube 3 and the pline 4 to seal it so as not to leak.

The sealing plug 5 has a hole 51 in the center into which the refrigerant evaporation tube 3 fits, and two air vent holes 52 and 52 on both sides that communicate with the outside air.
When the prine 4 is injected into the prine tank 1, the air in the prine tank 1 is discharged through the air vent hole 52.52, and then the resin bolt 6.6 is inserted into the throttle hole 52.52.
is screwed in to completely seal the prine tank 1.

The sealing plug 5 also serves as a spacer between the refrigerant evaporation tube 3 and the pline tank 1 when it is fitted into the pline tank 1.

Next, to explain the function of the heat exchanger of this invention, when the compressor of the refrigeration cycle (not shown) is driven, the refrigerant liquefied in the condenser passes through the expansion valve and refrigerant evaporation pipe piped into the prine tank 1. The refrigerant flows into the freezing brine 4 as a mist, where it evaporates while taking heat from the freezing brine 4.

As a result, the brine 4 is gradually frozen at a low temperature and stored as cold.

The refrigerant, which has evaporated and returned to its original gaseous state, returns to the compressor.

The arrows in FIG. 1 indicate the direction in which the refrigerant flows through the refrigerant evaporation tube 3.

As the brine 4 is frozen in this refrigeration cycle, the pressure inside the brine tank 1 increases due to its volume expansion, but this is controlled by the upward movement of the sealing plug 5 along the brine tank 1 button and the refrigerant evaporation pipe 3. is adjusted to

In order to make the movement of the sealing plug 5 smooth, it is effective to apply a lubricant such as grease in advance to the sliding contact surface of the sealing plug 5 with the brine tank 1 button and the refrigerant evaporation tube 3.

Therefore, during cold storage, the interior of a refrigerator car or the like is cooled by the latent heat of melting of the frozen brine 4.

Further, a decrease in the internal pressure of the brine tank 1 due to volumetric contraction due to melting of the brine 4 is also adjusted by moving the sealing plug 5 downward along the brine tank 1 and the refrigerant evaporation pipe 3.

As described above, according to the heat exchanger of this invention, a sealing plug made of an elastic material such as rubber is provided in the gap formed between the cylindrical brine tank and the refrigerant evaporation tube piped inside the brine tank. The brine tank is sealed by fitting, and the increase and decrease in the internal pressure of the brine tank due to volume changes due to freezing and thawing of the brine is adjusted by moving the sealing stopper up and down along the brine tank and the refrigerant evaporation pipe. Since there is no risk of deformation or damage to the brine tank, and the sealing plug maintains a completely sealed state over a long period of time, the brine does not wear out and running costs can be reduced. It also serves as a spacer between the pipe and the brine tank, and because it has a simple structure, it can be provided at a low cost, and it is highly durable, making it a highly practical idea.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention; Fig. 1 is a partially cutaway perspective view of the heat exchanger of this invention, and Fig. 2 is a partial cutaway view of the heat exchanger of this invention.
3 is a sectional view taken along the line -■, and FIG. 3 is a sectional view taken along the line -■ in FIG. 1... Brine tank, 2... Holding frame, 3... Refrigerant evaporation tube, 4... Freezing pline, 5... Sealing Plug, 6...Resin bolt.

Claims (1)

[Scope of utility model registration request] A system in which a large number of cylindrical pline tanks are arranged in a row, two refrigerant evaporation tubes are inserted into the pline tank for communication, and a freezing pline is sealed in the pline tank, which is formed by the pline tank and the refrigerant evaporation tube. A sealing plug made of an elastic material such as rubber is fitted into the gap between the prine tank and the prine tank, and the sealing plug prevents the increase or decrease in the internal pressure of the prine tank due to changes in volume due to freezing and thawing of the prine. A heat exchanger for a regenerative refrigeration system, characterized in that the adjustment is made by moving up and down along a prine tank and a refrigerant evaporation pipe.