CN215176200U

CN215176200U - Shell and tube evaporator for snow melting machine

Info

Publication number: CN215176200U
Application number: CN202121653907.XU
Authority: CN
Inventors: 肖家峰; 张振华; 甘海峰; 罗翔; 杨建刚
Original assignee: Huangshi Donper Refrigeration Co ltd
Current assignee: Huangshi Donper Refrigeration Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-14
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a shell and tube evaporator for a snow melt machine, which comprises an outer barrel, wherein an inner barrel is arranged in the outer barrel, a spiral flow passage is arranged between the outer wall of the inner barrel and the inner wall of the outer barrel, one end of the spiral flow passage is provided with a refrigerant inlet, and the other end is provided with a refrigerant outlet; the utility model discloses heat exchange efficiency is high, does benefit to the compressor oil return simultaneously, avoids compressor moving part wearing and tearing.

Description

Shell and tube evaporator for snow melting machine

Technical Field

The utility model relates to an evaporator equipment field specifically is a shell and tube evaporator for snow melt machine.

Background

The existing snow melting machine has two types of evaporators, one type is a copper-wound tube type, the phase change refrigeration process of a refrigerant is finished in a copper tube, cold energy is transmitted to an evaporator barrel, multiple layers of thermal resistances exist in the cold energy transmission process, heat loss exists, heat exchange is influenced, meanwhile, the section of the copper tube is oval after being formed, the oval cannot be perfectly attached to the inner surface of the evaporator barrel, the heat exchange area is lost, and heat exchange is influenced; the other type is a flooded type, the flooded type is also an inner cylinder and an outer cylinder structure, but no spiral pipeline exists, the advantages are that the heat exchange area is lossless, the heat exchange amount is large, the defect is that the problem of poor oil return exists, oil cannot return to the compressor, oil is accumulated in the evaporator, the heat exchange is affected, meanwhile, the oil of the back pressure machine is reduced, the abrasion of a moving part of the compressor is aggravated, and the service life is shortened.

Disclosure of Invention

The utility model aims at solving the problem that two types of snow melt machine evaporators exist now, provide a snow melt machine shell and tube evaporator, have both advantages simultaneously and abandoned original shortcoming, the heat transfer is fast, does not have the oil deposit, and the part cost is lower moreover.

The utility model has the following concrete scheme: a shell and tube evaporator for a snow melt machine comprises an outer barrel, an inner barrel is arranged in the outer barrel, a spiral flow channel is arranged between the outer wall of the inner barrel and the inner wall of the outer barrel, a refrigerant inlet is formed in one end of the spiral flow channel, and a refrigerant outlet is formed in the other end of the spiral flow channel.

The lateral wall of urceolus is straight section of thick bamboo, and the lateral wall of inner tube is equipped with the spiral recess to the indent, and the maximum external diameter of spiral recess is the same with the inner wall diameter of urceolus.

The cross-section of the spiral groove is arc-shaped.

The inner wall of inner tube is equipped with thermal insulation layer.

Refrigerant entry linkage has an evaporator import pipe, and refrigerant exit linkage has an evaporator outlet pipe, and evaporator import pipe and evaporator outlet pipe all are located the inside of inner tube.

The working principle of the utility model is as follows: the outer cylinder of the evaporator is contacted with the beverage to transfer cold energy to the beverage, so that the beverage is cooled and crystallized to finally form snow melt, the surface of the inner cylinder of the evaporator is provided with a spiral groove, the section of the spiral groove is arc-shaped, the spiral groove protrudes towards the inner surface, and the outer surface of the inner cylinder and the surface of the outer cylinder are welded to form a closed spiral flow channel; the liquid refrigerant passes through the spiral flow channel, absorbs the heat of the drink on the outer surface of the outer cylinder of the evaporator, then changes into gas after phase change, and flows out from the outlet of the evaporator.

Compared with the prior art, the utility model has the advantages that; the heat exchange efficiency is high, and the oil return of the compressor is facilitated, so that the abrasion of moving parts of the compressor is avoided.

Drawings

Fig. 1 is a front view of the present invention;

FIG. 2 is a left side view of FIG. 1;

FIG. 3 is a view A-A of FIG. 1;

FIG. 4 is a view B-B of FIG. 2;

FIG. 5 is a schematic view of the hidden outer barrel of the present invention;

in the figure: 1-outer cylinder, 2-spiral flow channel, 3-inner cylinder, 4-evaporator inlet pipe, 5-evaporator outlet pipe, 6-refrigerant outlet and 7-refrigerant inlet.

Detailed Description

Referring to fig. 1-5, the present embodiment is a shell-and-tube evaporator for a snow melting machine, which includes an outer tube 1, an inner tube 3 is installed in the outer tube 1, a spiral flow channel 2 is provided between the outer wall of the inner tube 3 and the inner wall of the outer tube 1, one end of the spiral flow channel 2 is provided with a refrigerant inlet 7, and the other end is provided with a refrigerant outlet 6.

In this embodiment, the side wall of the outer cylinder 1 is a straight cylinder, the side wall of the inner cylinder 3 is provided with an inward concave spiral groove, the maximum outer diameter of the spiral groove is the same as the diameter of the inner wall of the outer cylinder 1, and the outer wall surface of the inner cylinder 3 is welded to the inner wall surface of the outer cylinder 1.

In this embodiment, the cross-section of the spiral groove is arc-shaped.

In this embodiment, the inner wall of the inner cylinder 3 is provided with a heat insulation layer.

In the embodiment, the refrigerant inlet 7 is connected with an evaporator inlet pipe 4, the refrigerant outlet 6 is connected with an evaporator outlet pipe 5, and both the evaporator inlet pipe 4 and the evaporator outlet pipe 5 are positioned inside the inner barrel 3.

Claims

1. A shell and tube evaporator for a snow melt machine is characterized in that: the device comprises an outer barrel, wherein an inner barrel is arranged in the outer barrel, a spiral flow passage is arranged between the outer wall of the inner barrel and the inner wall of the outer barrel, one end of the spiral flow passage is provided with a refrigerant inlet, and the other end of the spiral flow passage is provided with a refrigerant outlet.

2. The shell-and-tube evaporator for a snow-melting machine as claimed in claim 1, wherein: the lateral wall of urceolus is straight section of thick bamboo, and the lateral wall of inner tube is equipped with the spiral recess of indent, and the maximum external diameter of spiral recess is the same with the inner wall diameter of urceolus.

3. The shell-and-tube evaporator for a snow-melting machine as claimed in claim 2, wherein: the cross section of the spiral groove is arc-shaped.

4. The shell-and-tube evaporator for a snow-melting machine as claimed in claim 1, wherein: the inner wall of the inner cylinder is provided with a heat preservation and insulation layer.

5. The shell-and-tube evaporator for a snow-melting machine as claimed in claim 1, wherein: the refrigerant inlet is connected with an evaporator inlet pipe, the refrigerant outlet is connected with an evaporator outlet pipe, and the evaporator inlet pipe and the evaporator outlet pipe are both positioned in the inner barrel.