A long oval flooded evaporator for refrigeration

Abstract

This utility model discloses an oblong, flooded evaporator for refrigeration, relating to the field of evaporator technology. It aims to solve the problem that increased refrigerant charge due to increased internal space in the evaporator shell leads to liquid carryover during compressor intake, significantly affecting unit stability. The key technical features include an evaporator shell with a support bracket, an air intake port, and an adjustment port for overall internal gas regulation fixedly connected from right to left at the upper end. A liquid inlet is fixedly connected at the lower end of the evaporator shell. The evaporator shell has a waist-shaped cross-section. A left water chamber is fixedly connected to the left side of the evaporator shell, and a right water chamber is fixedly connected to the right side. This design achieves a higher superheat at the top compared to traditional air conditioners, thus improving the overall energy efficiency of the unit.

Description

Technical Field

[0001] This utility model relates to the technical field of evaporators, and in particular to an oblong, flooded evaporator for refrigeration. Background Technology

[0002] Currently, in the field of industrial refrigeration, heating and air conditioning, the traditional evaporator types include: dry evaporator, flooded evaporator, and falling film evaporator. Among them, the commonly used flooded evaporator type is the circular cross-section evaporator, which has a circular shell with heat exchange tubes arranged at the bottom of the shell and the top being the gas phase space. Its main problem is that if the heat exchange tubes are arranged too high, the gas phase space will not be large enough or the gas phase distance will not be sufficient, resulting in liquid being drawn into the unit's intake air.

[0003] The existing technical solutions mentioned above have the following drawbacks: In order to ensure that the heat exchange tubes are arranged at a lower position at the bottom and that sufficient gas phase space is reserved at the top, a larger cylinder must be used. A larger cylinder means increased cost, larger evaporator volume and floor space. At the same time, due to the increased internal space of the evaporator cylinder, the amount of refrigerant charged will also increase accordingly. A larger refrigerant charge will cause the compressor in the system to have the risk of liquid carryover during suction, which will greatly affect the stability of the unit. Utility Model Content

[0004] The purpose of this invention is to provide a long oval-shaped flooded evaporator for refrigeration that is more conducive to improving the overall energy efficiency of the machine.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A refrigeration elongated oval flooded evaporator includes an evaporator shell. From right to left, a bracket, an air intake port, and an adjustment port for overall internal gas regulation are fixedly connected to the upper end of the evaporator shell. A liquid inlet is fixedly connected to the lower end of the evaporator shell. The cross-section of the evaporator shell is oblong. A left water chamber is fixedly connected to the left side of the evaporator shell, and a right water chamber is fixedly connected to the right side of the evaporator shell.

[0007] Furthermore, an external reinforcing rib is fixedly connected to the outside of the evaporator shell, and the external reinforcing rib is evenly distributed on the outer wall of the evaporator shell.

[0008] Furthermore, a level gauge is fixedly connected to the front end of the evaporator housing, and the measuring end of the level gauge extends through the front end of the evaporator housing into the interior of the evaporator housing.

[0009] Furthermore, a sight glass is fixedly connected to the front end of the evaporator shell, and two sets of sight glasses are longitudinally distributed at the front end of the evaporator shell.

[0010] Furthermore, a refrigeration chamber is provided inside the evaporator shell, a heat exchange tube is fixedly connected inside the refrigeration chamber, a liquid distribution plate is fixedly connected inside the refrigeration chamber, the liquid distribution plate is located below the heat exchange tube, and the cross-section of the refrigeration chamber is an oblong shape.

[0011] Furthermore, the bottom of the refrigeration chamber is filled with liquid refrigerant, the top of the refrigeration chamber is filled with gas refrigerant, and the heat exchange tubes are evenly distributed inside the refrigeration chamber.

[0012] In summary, the beneficial technical effects of this utility model are as follows:

[0013] 1. This refrigeration uses an elongated oval flooded evaporator with an elongated oval cross-section, which provides a high gas phase space. This allows the gas-liquid mixture after evaporation to have sufficient vaporization distance and gas-liquid separation distance, so that the gas vaporized from the evaporator enters the compressor as a single gas without carrying refrigerant liquid. This ensures that the compressor is free of liquid and increases its service life.

[0014] 2. This refrigeration system uses a long, oval-shaped, flooded evaporator. Structurally, this makes the unit more compact, suitable for both small and large units, and saves materials. Regarding refrigerant charge, the overall volume of this evaporator is smaller than traditional evaporators, significantly reducing the amount of refrigerant required. In terms of performance, the liquid evaporation space at the bottom of this evaporator is relatively smaller than in traditional air conditioners, making it easier to form an oil-rich zone at the bottom and facilitating oil return.

[0015] 3. This refrigeration uses an elongated oval-shaped flooded evaporator. In terms of energy efficiency contribution, this evaporator has a longer top gas phase space distance than traditional evaporators. This allows the liquid droplets carried out by the gas during the evaporation process to have sufficient space and time to vaporize and absorb the heat carried out by the liquid. This results in a higher superheat at the top compared to traditional air conditioners, which is more conducive to improving the overall energy efficiency of the unit. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the side cross-sectional structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the present invention in its filled state.

[0020] In the diagram, 1. Evaporator shell; 2. Suction port; 3. Adjustment port; 4. Liquid inlet; 5. Left water chamber; 6. Right water chamber; 7. Support; 11. External reinforcing rib; 12. Liquid level gauge; 13. Sight glass; 14. Refrigeration chamber; 15. Heat exchange tube; 16. Liquid distribution plate; 17. Liquid refrigerant; 18. Gas refrigerant. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Reference Figure 1 A refrigeration elongated oval-shaped flooded evaporator includes an evaporator shell 1. From right to left, a bracket 7, an air intake port 2, and an adjustment port 3 for overall internal gas regulation are fixedly connected to the upper end of the evaporator shell 1. A liquid inlet 4 is fixedly connected to the lower end of the evaporator shell 1. The cross-section of the evaporator shell 1 is oblong-shaped. A left water chamber 5 is fixedly connected to the left side of the evaporator shell 1, and a right water chamber 6 is fixedly connected to the right side of the evaporator shell 1. The oblong-shaped hole is a rectangular structure with an open middle section and semi-circular arc-shaped sealing edges at both ends. The purpose of the refrigeration cavity 14 with the oblong-shaped hole structure is to reserve a relatively high gas phase space at the top of the shell, allowing sufficient vaporization distance and gas-liquid separation distance for the vaporized gas-liquid mixture after evaporation. This ensures that the gas entering the compressor from the evaporator is a single gas without refrigerant liquid, thus guaranteeing that the compressor is liquid-free and increasing its service life.

[0023] Reference Figure 2 An external reinforcing rib 11 is fixedly connected to the outside of the evaporator shell 1. The external reinforcing ribs 11 are evenly distributed on the outer wall of the evaporator shell 1. The external reinforcing ribs 11 distributed at equal intervals on the outer wall of the evaporator shell 1 increase the overall strength and ensure a good overall refrigeration protection effect.

[0024] Reference Figure 1 A level gauge 12 is fixedly connected to the front end of the evaporator housing 1. The measuring end of the level gauge 12 extends through the front end of the evaporator housing 1 into the interior of the evaporator housing 1. The level gauge 12 can detect the liquid level inside the evaporator housing 1. A sight glass 13 is fixedly connected to the front end of the evaporator housing 1. Two sets of sight glasses 13 are longitudinally distributed at the front end of the evaporator housing 1. The sight glasses 13 facilitate the viewing of the liquid level, thereby facilitating the adjustment of the ratio of refrigerant to refrigerant air.

[0025] Reference Figure 3 The evaporator shell 1 has a refrigeration chamber 14 inside, and a heat exchange tube 15 is fixedly connected inside the refrigeration chamber 14. A liquid distribution plate 16 is fixedly connected inside the refrigeration chamber 14. The liquid distribution plate 16 is located below the heat exchange tube 15. The heat exchange tube 15 is in full contact with the refrigerant liquid 17, which facilitates rapid heat exchange of the whole.

[0026] Reference Figure 4 The bottom of the refrigeration chamber 14 is filled with refrigerant liquid 17, and the top of the refrigeration chamber 14 is filled with refrigerant gas 18. The heat exchange tubes 15 are evenly distributed inside the refrigeration chamber 14. The refrigerant gas 18 and refrigerant liquid 17 can achieve rapid heat exchange, which increases the overall heat exchange effect.

[0027] The implementation principle of this embodiment is as follows: First, the refrigeration chamber 14 inside the evaporator shell 1 has a rectangular structure with an open middle and semi-circular arc-shaped sealing edges at both ends, i.e., an oblong shape. The purpose is to reserve a relatively high gas phase space at the top of the cylinder, so that the gas-liquid mixture after evaporation has sufficient vaporization distance and gas-liquid separation distance, thereby ensuring that the gas vaporized from the evaporator enters the compressor as a single gas without refrigerant liquid, thus ensuring that the compressor is liquid-free and increasing its service life. In addition, the entire interior is equipped with heat exchange tubes 15 with equal spacing for heat exchange, and the refrigerant liquid 17 and refrigerant gas 18 work together to achieve dual rapid heat exchange, making the unit more compact and suitable not only for miniaturized units. It can also be applied to large units, saving materials. In terms of refrigerant charge, this evaporator has a smaller overall volume than traditional evaporators, which greatly reduces the amount of refrigerant required for the unit. In terms of performance, the liquid evaporation space at the bottom of this evaporator is relatively smaller than that of traditional air conditioners, making it easier to form an oil-rich zone at the bottom of the evaporator and making oil return easier. In terms of energy efficiency, this evaporator has a longer top gas phase space distance than traditional evaporators, which allows the liquid droplets carried out by the gas during the evaporation process to have enough space and time to vaporize and absorb the heat carried out by the liquid. This results in a higher superheat at the top compared to traditional air conditioners, which is more conducive to improving the overall energy efficiency of the unit.

[0028] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A rectangular, flooded evaporator for refrigeration, comprising an evaporator shell (1), characterized in that: The upper end of the evaporator housing (1) is fixedly connected from right to left with a bracket (7), an air intake port (2) for air intake, and an adjustment port (3) for overall internal gas regulation. The lower end of the evaporator housing (1) is fixedly connected with a liquid inlet (4). The left side of the evaporator housing (1) is fixedly connected with a left water chamber (5), and the right side of the evaporator housing (1) is fixedly connected with a right water chamber (6).

2. The oblong flooded evaporator for refrigeration according to claim 1, characterized in that: An external reinforcing rib (11) is fixedly connected to the outside of the evaporator shell (1), and the external reinforcing rib (11) is distributed at equal intervals on the outer wall of the evaporator shell (1).

3. The oblong flooded evaporator for refrigeration according to claim 1, characterized in that: A level gauge (12) is fixedly connected to the front end of the evaporator housing (1), and the measuring end of the level gauge (12) extends through the front end of the evaporator housing (1) into the interior of the evaporator housing (1).

4. The oblong flooded evaporator for refrigeration according to claim 1, characterized in that: A sight glass (13) is fixedly connected to the front end of the evaporator housing (1), and two sets of sight glasses (13) are longitudinally distributed at the front end of the evaporator housing (1).

5. The oblong flooded evaporator for refrigeration according to claim 1, characterized in that: The evaporator shell (1) has a refrigeration chamber (14) inside, a heat exchange tube (15) is fixedly connected inside the refrigeration chamber (14), a liquid distribution plate (16) is fixedly connected inside the refrigeration chamber (14), the liquid distribution plate (16) is located below the heat exchange tube (15), and the cross-section of the refrigeration chamber (14) is a waist-shaped hole.

6. The oblong flooded evaporator for refrigeration according to claim 5, characterized in that: The bottom of the refrigeration chamber (14) is filled with refrigerant liquid (17), the top of the refrigeration chamber (14) is filled with refrigerant gas (18), and the heat exchange tubes (15) are evenly distributed inside the refrigeration chamber (14).

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