KR200178810Y1 - Coolant tube made of polypropylene for use in an absorption refrigerator - Google Patents

Abstract

The present invention adopts a polyethylene tube as a liquid refrigerant pipe through which a rare solution flows in an absorption chiller to prevent cracks caused by the vibration of the refrigerator and to reduce the welding parts generated in the bent portion, thereby facilitating the work, and improving the durability of the pipe by eliminating leakage. The liquid refrigerant pipe of the absorption chiller that can be made, the high temperature regenerator to heat the rare solution flowed from the high temperature heat exchanger through the liquid refrigerant pipe, and the rare solution flowed from the high temperature regenerator through the liquid refrigerant pipe to the water vapor. In the absorption chiller of the present invention comprising a low temperature regenerator having a condenser that is evaporated and condensed, an evaporator in which condensed water introduced from the low temperature regenerator is evaporated through a liquid refrigerant pipe, and an absorber that absorbs refrigerant vapor evaporated by an absorbent. The liquid refrigerant pipe through which the rare solution flows is composed of a polyethylene pipe. .

Description

Liquid refrigerant tube of absorption chiller {COOLANT TUBE MADE OF POLYPROPYLENE FOR USE IN AN ABSORPTION REFRIGERATOR}

The present invention relates to a liquid refrigerant pipe of an absorption chiller, and more particularly, by adopting a polyethylene pipe as a liquid refrigerant pipe in which a rare solution flows in an absorption chiller, to prevent cracking caused by the vibration of the refrigerator and to generate welds in curved portions. It relates to a liquid refrigerant pipe of the absorption chiller that can reduce the work to facilitate the operation and improve the durability of the pipe by eliminating the leakage.

The air conditioner can be classified into various types according to the refrigerant to be used, and in particular, water is used as the refrigerant as the absorption chiller. In an absorption type refrigerator using water as a refrigerant, lithium bromide is mainly used as an absorbent, and water and lithium bromide solution are heated using steam or high temperature water. Referring to FIG. Brief description of the absorption chiller.

1 is a block diagram showing a general absorption chiller, Figure 2 is an enlarged view showing an absorption tube of the absorption chiller according to the prior art. First, as shown in FIG. 1, when the schematic configuration of the absorption chiller is shown, the high temperature regenerator 2 for heating the rare solution introduced from the high temperature heat exchanger 10 and the liquid refrigerant pipe 32 are provided. The low temperature regenerator 8 having the condenser 20 in which the rare solution introduced from the high temperature regenerator 2 is evaporated and condensed by water vapor, and the condensed water introduced from the condenser 20 through the liquid refrigerant pipe 34 are evaporated. Evaporator 22 and absorber 24 for absorbing water evaporated by the absorbent. The evaporator 22 and the absorber 24 are arranged inside the cell 2. Usually, the liquid refrigerant pipes 32 and 34 use copper pipes or steel pipes for pressure piping, and elbows or the like are used for the curved pipe parts.

The coolant introduced along arrow P passes through absorber 24 and condenser 20 in sequence along pipe 18 and is then discharged along arrow P '. The cold water introduced along arrow Q is It is introduced into the evaporator 22 along the pipe 30 and cooled, and then supplied to the cooling coil along the arrow Q 'to cool the room.

The absorption chiller is provided with three pumps 12, 14 and 16. Among these, the absorption pump 12 serves to extract the diluted solution and send it back to the absorber 24. The refrigerant pump 14 sends the water not evaporated from the evaporator 22 back to the atomizer on the evaporator 22. The regeneration pump 16 serves to send the concentrated absorption solution introduced through the suction pipe 40 to the high temperature regenerator 2 through the low temperature heat exchanger 8 and the high temperature heat exchanger 10. The solution in the high temperature regenerator 2 can maintain the optimal refrigeration cycle only when a constant level is maintained. For this purpose, the solution level detector shown in FIG. 2 is conventionally used.

As shown here, two electrodes 42 and 42 'having different lengths are fixed to the upper cover 2a of the high temperature regenerator 2 by fixing parts 44 and 44'. When the solution inside the high temperature regenerator 2 rises, the current is conducted between the electrodes 42 and 42 'at each height, thereby reducing the resistance. Due to the decrease in resistance, the voltage difference becomes smaller, so that the change in the solution level can be detected.

In the conventional absorption chiller having such a configuration, the liquid refrigerant pipe is made of copper pipe or steel pipe for pressure piping, and the elbow is welded to the curved pipe, so that cracks may be generated by vibration generated during operation of the refrigerator. There is a problem in that the bent pipe portion is connected by welding, which takes a lot of work time and the durability of the pipe is reduced due to the occurrence of leakage.

The present invention devised to solve the above problems is to adopt a polyethylene tube as a liquid refrigerant pipe flowing in the rare solution in the absorption chiller to prevent cracks caused by the vibration of the freezer and to improve the workability by reducing the welding part generated in the curved portion, etc. It is an object of the present invention to provide a liquid refrigerant pipe of an absorption refrigerator.

1 is a block diagram showing a general absorption chiller.

♣ Explanation of symbols for main part of drawing ♣

2: high temperature regenerator 10: high temperature heat exchanger

20: Condenser 22: Evaporator

24: Absorbers 32, 34: Liquid refrigerant pipe

An object of the present invention described above is a high temperature regenerator for heating a rare solution introduced from a high temperature heat exchanger through a liquid refrigerant pipe, and a condenser in which a rare solution introduced from a high temperature regenerator through a liquid refrigerant pipe is evaporated into water vapor and condensed. An absorption chiller comprising a built-in low temperature regenerator, an evaporator in which condensed water introduced from the low temperature regenerator through a liquid refrigerant pipe and an absorber absorbing refrigerant vapor evaporated by an absorbent are provided, wherein the rare refrigerant flows through the liquid refrigerant pipe. Is achieved by the liquid refrigerant tube of the absorption chiller, characterized in that the polyethylene tube.

Hereinafter, a liquid refrigerant pipe of an absorption type refrigerator according to a preferred embodiment of the present invention will be described in detail, and the same parts as in the conventional structure described with reference to FIG. 1 will be described with the same reference numerals.

As illustrated in FIG. 1, when the constitution of a conventional absorption type cold and hot water heater is used, the high temperature regenerator 2 for heating the rare solution introduced from the high temperature heat exchanger 10 and the steam introduced from the high temperature regenerator 2 are condensed. The low temperature regenerator 8 in which the condenser 20 is built in, the evaporator 22 which exchanges heat with the cooling water passing through the pipe 30 while the condensate flowing from the condenser 20 evaporates, and the vapor evaporated by the absorbent It consists of an absorber 24 for absorbing.

In the absorption chiller of this configuration, in a preferred embodiment of the present invention, the rare solution of the high temperature heat exchanger 10 is supplied to the high temperature regenerator 2 or the rare solution of the high temperature regenerator 2 is supplied to the low temperature regenerator 8. Alternatively, a liquid refrigerant pipe for supplying the rare solution of the low temperature regenerator 8 to the absorber 24 was constituted by a polyethylene tube.

Thus, by replacing the liquid refrigerant pipe through the rare solution with polyethylene pipe instead of the existing copper pipe or steel pipe for pressure piping, the flexibility is increased to prevent cracking due to structural vibration of the freezer, welding work to join the bent pipe, etc. Can be omitted.

According to the present invention as described above, by adopting the polyethylene tube as the liquid refrigerant pipe flowing the rare solution in the absorption chiller to prevent cracks caused by the vibration of the freezer, to reduce the welding parts generated in the bent portion, to facilitate the work and eliminate the leakage There is an advantage that can improve the durability of the pipe.

Claims (1)

A high temperature regenerator for heating a rare solution introduced from a high temperature heat exchanger through a liquid refrigerant pipe, a low temperature regenerator having a condenser in which a rare solution introduced from a high temperature regenerator through a liquid refrigerant pipe is evaporated and condensed by water vapor, and a liquid. An absorption chiller comprising an evaporator in which condensed water introduced from a low temperature regenerator through a refrigerant pipe is evaporated and an absorber absorbing refrigerant vapor evaporated by an absorbent. The liquid refrigerant pipe in which the rare solution flows is a liquid refrigerant pipe of the absorption chiller, characterized in that the polyethylene tube.