Horizontal siphon evaporator with parallel tube pass and series shell pass

Abstract

The utility model discloses a horizontal siphon evaporator with tube passes connected in parallel and shell passes connected in series, relates to the technical field of evaporators, and aims to solve the problems that the material cost consumed by transformation of the conventional dry evaporator is amazing, but the energy-saving effect is not ideal. The auxiliary evaporator is installed on one side of the exterior of the main evaporator, a gas-liquid separator is arranged above the exterior of the main evaporator and the exterior of the auxiliary evaporator, a supporting mechanism is arranged between the main evaporator and the gas-liquid separator, one end of the gas-liquid separator is connected with one end of the main evaporator through a second connecting pipeline, and the other end of the gas-liquid separator is connected with the auxiliary evaporator through a second connecting pipeline. The other end of the gas-liquid separator is connected with the other end of the main evaporator through a liquid return pipeline, one end of the auxiliary evaporator is connected with the liquid return pipeline through a first connecting pipeline, and the other end of the auxiliary evaporator is fixedly connected with the second connecting pipeline through a fourth connecting pipeline.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to a horizontal tube-pass parallel-connected shell-pass series-connected siphon-type evaporator. Background Art

[0002] At present, in the field of industrial refrigeration, large refrigeration units generally use dry shell and tube evaporators as the main heat exchange equipment. However, as society's requirements for energy conservation and environmental protection become increasingly higher, how to improve the energy efficiency ratio of the refrigeration unit has become particularly important. The heat exchange efficiency of the evaporator directly determines the energy efficiency ratio of the refrigeration unit.

[0003] For example, the Chinese patent application, with publication number CN212006306U and titled "A Siphon Evaporator," includes a horizontal vapor-liquid separator and a horizontal evaporator. The horizontal vapor-liquid separator is fixed to the upper portion of the horizontal evaporator; the two ends of the horizontal vapor-liquid separator are connected to the two ends of the horizontal evaporator via a vapor riser and a liquid downcomer, respectively; and the horizontal vapor-liquid separator is provided with multiple layers of spoilers, each of which has evenly distributed liquid droplets. This utility model improves the internal structure of the vapor-liquid separator, increases the phase change rate of the evaporated refrigerant vapor in the vapor-liquid separator, and improves evaporation efficiency.

[0004] However, the inherent characteristics of existing dry evaporators limit their ability to improve heat transfer efficiency. This has led many energy-saving renovation projects to replace evaporators with larger heat exchange areas to achieve energy conservation and consumption reduction. However, this renovation is costly and the existing dry evaporators have to be scrapped. In particular, the renovation of some large-capacity dry evaporators incurs staggering material costs while achieving unsatisfactory energy-saving results. Therefore, this does not meet existing needs. Therefore, we propose a horizontal tube-pass parallel shell-pass series siphon evaporator. Utility Model Content

[0005] The purpose of the utility model is to provide a horizontal tube-side parallel shell-side series siphon evaporator to solve the problem in the above background technology that the material cost of the existing dry evaporator modification is astonishing but the energy saving effect is not ideal.

[0006] To achieve the above object, the present invention provides the following technical solution: a horizontal tube-side parallel shell-side series siphon evaporator, comprising: a main evaporator, wherein the lower end surface of the main evaporator is provided with a first bracket seat;

[0007] Also includes:

[0008] An auxiliary evaporator is installed on one side of the outside of the main evaporator, a gas-liquid separator is provided above the outside of the main evaporator and the auxiliary evaporator, a supporting mechanism is provided between the main evaporator and the gas-liquid separator, one end of the gas-liquid separator is connected to one end of the main evaporator through a second connecting pipe, the other end of the gas-liquid separator is connected to the other end of the main evaporator through a return liquid pipe, one end of the auxiliary evaporator is connected to the return liquid pipe through a first connecting pipe, and the other end of the auxiliary evaporator is fixedly connected to the second connecting pipe through a fourth connecting pipe.

[0009] Preferably, a water inlet is provided on the front end surface of one end of the main evaporator, and the water inlet is fixedly connected to the main evaporator, a compressor return air duct is provided on the upper end surface of the gas-liquid separator, and the compressor return air duct is fixedly connected to the gas-liquid separator, and a water outlet is provided on the upper end surface of the auxiliary evaporator, and the water outlet is fixedly connected to the auxiliary evaporator.

[0010] Preferably, a second bracket seat is provided on the lower end surface of the auxiliary evaporator.

[0011] Preferably, a support mechanism is provided between the main evaporator and the gas-liquid separator, the upper end of the support mechanism is bolted to the gas-liquid separator via an upper bent end, the lower end of the support mechanism is threadedly connected to the main evaporator via a lower bent end, and the lower bent end and the upper bent end are both formed integrally with the upper and lower ends of the support mechanism.

[0012] Preferably, the main evaporator and the auxiliary evaporator are fixedly connected via a third connecting pipe.

[0013] Preferably, a liquid level gauge is provided on one side of the outer wall of the gas-liquid separator, and a liquid supply pipe is provided on the other side of the outer wall of the gas-liquid separator.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the present invention, the auxiliary evaporator and the main evaporator shell-side water circuit are connected in series, the tube-side fluorine circuit is connected in parallel, the gas-liquid separator air inlet is connected to the main evaporator air outlet through a riser, and the bottom liquid outlet of the gas-liquid separator is connected to the main evaporator liquid inlet through a return liquid pipe. The tube-side refrigerant liquid and the shell-side coolant exchange heat on both sides of the heat exchange tube. By modifying the original dry evaporator without replacing it, the energy-saving modification cost can be greatly saved; the original direct expansion dry evaporator is transformed into a gravity-fed siphon evaporator, which greatly improves the heat transfer efficiency, thereby realizing the combination of two or more heat exchangers to jointly complete the heat exchange task, reducing the cost of on-site modification, improving the utilization rate of the original equipment, and reducing waste, thereby improving the refrigeration efficiency, achieving energy conservation and emission reduction, and avoiding the problem that the material cost of the existing dry evaporator modification is astonishing, but the energy-saving effect is not ideal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall right side structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the overall left side structure of the present utility model;

[0019] Figure 4 This is a schematic diagram of the partial structure of the support mechanism and the upper curved end of the utility model;

[0020] In the figure: 100, gas-liquid separator; 101, compressor return air pipe; 102, liquid level gauge; 103, liquid supply pipe; 104, liquid return pipe; 10401, first connecting pipe; 200, main evaporator; 201, first bracket seat; 202, water inlet; 300, auxiliary evaporator; 301, second bracket seat; 302, water outlet; 400, second connecting pipe; 500, supporting mechanism; 501, upper curved end; 502, lower curved end; 600, third connecting pipe; 700, fourth connecting pipe. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1

[0023] See also Figure 1-4 The present invention provides an embodiment of a horizontal tube-side parallel shell-side series siphon evaporator, comprising: a main evaporator 200, wherein a first bracket 201 is provided on the lower end surface of the main evaporator 200;

[0024] Also includes:

[0025] The auxiliary evaporator 300 is installed on one side of the outside of the main evaporator 200. A gas-liquid separator 100 is provided above the outside of the main evaporator 200 and the auxiliary evaporator 300. A supporting mechanism 500 is provided between the main evaporator 200 and the gas-liquid separator 100. One end of the gas-liquid separator 100 is connected to one end of the main evaporator 200 through the second connecting pipe 400, and the other end of the gas-liquid separator 100 is connected to the other end of the main evaporator 200 through the return liquid pipe 104. One end of the auxiliary evaporator 300 is connected to the return liquid pipe 104 through the first connecting pipe 10401, and the other end of the auxiliary evaporator 300 is fixedly connected to the second connecting pipe 400 through the fourth connecting pipe 700.

[0026] Example 2

[0027] See also Figure 1 、 Figure 2 and Figure 3 The front end surface of one end of the main evaporator 200 is provided with a water inlet 202, and the water inlet 202 is fixedly connected to the main evaporator 200, the upper end surface of the gas-liquid separator 100 is provided with a compressor return air duct 101, and the compressor return air duct 101 is fixedly connected to the gas-liquid separator 100, the upper end surface of the auxiliary evaporator 300 is provided with a water outlet 302, and the water outlet 302 is fixedly connected to the auxiliary evaporator 300, and the lower end surface of the auxiliary evaporator 300 is provided with a second bracket seat 301, and a support mechanism 500 is provided between the main evaporator 200 and the gas-liquid separator 100, the upper end of the support mechanism 500 is bolted to the gas-liquid separator 100 through the upper bent end 501, and the lower end of the support mechanism 500 is threadedly connected to the main evaporator 200 through the lower bent end 502, and the lower bent end 502 and the upper bent end 501 are both formed integrally with the upper and lower ends of the support mechanism 500.

[0028] See also Figure 1 、 Figure 2 and Figure 3 The main evaporator 200 and the auxiliary evaporator 300 are fixedly connected through a third connecting pipe 600. A liquid level meter 102 is provided on one side of the outer wall of the gas-liquid separator 100, and a liquid supply pipe 103 is provided on the other side of the outer wall of the gas-liquid separator 100.

[0029] Working principle: The auxiliary evaporator 300 and the main evaporator 200 shell-side water circuits are connected in series, and the tube-side fluorine circuits are connected in parallel. The air inlet of the gas-liquid separator 100 is connected to the air outlet of the main evaporator 200 through a riser, and the bottom liquid outlet of the gas-liquid separator 100 is connected to the liquid inlet of the main evaporator 200 through a liquid return pipe 104. The tube-side refrigerant liquid and the shell-side coolant exchange heat on both sides of the heat exchange tube. By modifying the original dry evaporator without replacing it, the energy-saving modification cost can be greatly saved; the original direct expansion dry evaporator is transformed into a siphon evaporator with gravity liquid supply, which greatly improves the heat transfer efficiency.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A horizontal tube-side parallel shell-side series siphon evaporator, comprising a main evaporator (200), wherein a first bracket (201) is provided on the lower end surface of the main evaporator (200); Its characteristics are: Also includes: The auxiliary evaporator (300) is installed on one side of the outside of the main evaporator (200); a gas-liquid separator (100) is provided above the outside of the main evaporator (200) and the auxiliary evaporator (300); a supporting mechanism (500) is provided between the main evaporator (200) and the gas-liquid separator (100); one end of the gas-liquid separator (100) is connected to one end of the main evaporator (200) through a second connecting pipe (400); the other end of the gas-liquid separator (100) is connected to the other end of the main evaporator (200) through a return liquid pipe (104); one end of the auxiliary evaporator (300) is connected to the return liquid pipe (104) through a first connecting pipe (10401); and the other end of the auxiliary evaporator (300) is fixedly connected to the second connecting pipe (400) through a fourth connecting pipe (700).

2. The horizontal tube-side parallel and shell-side series siphon evaporator according to claim 1, characterized in that: A water inlet (202) is provided on the front end surface of one end of the main evaporator (200), and the water inlet (202) is fixedly connected to the main evaporator (200); a compressor return air pipeline (101) is provided on the upper end surface of the gas-liquid separator (100), and the compressor return air pipeline (101) is fixedly connected to the gas-liquid separator (100); a water outlet (302) is provided on the upper end surface of the auxiliary evaporator (300), and the water outlet (302) is fixedly connected to the auxiliary evaporator (300).

3. The horizontal tube-side parallel and shell-side series siphon evaporator according to claim 1, characterized in that: A second bracket seat (301) is provided on the lower end surface of the auxiliary evaporator (300).

4. The horizontal tube-side parallel and shell-side series siphon evaporator according to claim 1, characterized in that: A support mechanism (500) is provided between the main evaporator (200) and the gas-liquid separator (100); the upper end of the support mechanism (500) is connected to the gas-liquid separator (100) by bolts via an upper curved end head (501); the lower end of the support mechanism (500) is threadedly connected to the main evaporator (200) via a lower curved end head (502); the lower curved end head (502) and the upper curved end head (501) are both formed integrally with the upper and lower ends of the support mechanism (500).

5. The horizontal tube-side parallel and shell-side series siphon evaporator according to claim 1, characterized in that: The main evaporator (200) and the auxiliary evaporator (300) are fixedly connected via a third connecting pipe (600).

6. The horizontal tube-side parallel and shell-side series siphon evaporator according to claim 1, characterized in that: A liquid level meter (102) is provided on one side of the outer wall of the gas-liquid separator (100), and a liquid supply pipe (103) is provided on the other side of the outer wall of the gas-liquid separator (100).

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