Evaporator for refrigeration of central air conditioner

Abstract

The utility model discloses an evaporator for refrigeration of a central air conditioner, which belongs to the technical field of evaporators and comprises a base fixedly connected to the bottom end of an evaporator body, an L-shaped moving channel with an L-shaped vertical section is arranged on the base, and an L-shaped hollow pipe is slidably connected into the L-shaped moving channel. A sliding part of which the vertical section is of an I-shaped structure is arranged in the middle of the L-shaped hollow pipe; according to the evaporator for central air conditioner refrigeration, when the evaporator for central air conditioner refrigeration is used, external dry ice cleaning machine equipment is started, meanwhile, a screw is driven to rotate through a micro motor, and then an inverted-L-shaped block drives an L-shaped hollow pipe to move in an L-shaped moving channel; and a plurality of spray heads on the L-shaped hollow pipe spray solid dry ice particles to the inner side face of the evaporator body, the purpose of cleaning the inner side face of the evaporator in a quick response mode is achieved, when the L-shaped hollow pipe moves leftwards, a butt joint pipe is driven to move leftwards, and a transmission column can move in a transmission groove.

Description

Technical Field

[0001] This utility model belongs to the field of evaporator technology, specifically relating to an evaporator for central air conditioning refrigeration. Background Technology

[0002] The evaporator in a central air conditioning system is the core heat exchange component of the refrigeration system. It is responsible for cooling chilled water or air by absorbing heat and evaporating the refrigerant (such as R134a, R410A, etc.), thereby realizing the refrigeration function of the air conditioning system. It is usually installed in air conditioning terminal equipment (such as fan coil units, air handling units) or chillers, and is a key link in the refrigeration cycle (evaporation → compression → condensation → expansion).

[0003] Currently, in central air conditioning, split air conditioning, or industrial refrigeration equipment, the evaporator is the core heat exchange component of the refrigeration system. It cools the air or chilled water through the heat absorption effect of refrigerant evaporation. Currently, evaporators are typically installed in a fixed design, with their inner surface (the side facing inwards) constantly exposed to airflow or water, easily accumulating dust and other contaminants. The usual cleaning method involves disassembling the evaporator to expose the inward-facing side and manually cleaning it. However, this relies on maintenance personnel, is labor-intensive, and cannot respond promptly to cleaning issues. Therefore, there is a need for an evaporator specifically designed for central air conditioning refrigeration. Utility Model Content

[0004] The purpose of this invention is to provide an evaporator for central air conditioning refrigeration to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an evaporator for central air conditioning refrigeration, comprising a base fixedly attached to the bottom end of the evaporator body, an L-shaped moving channel with an L-shaped vertical cross-section opened on the base, an L-shaped hollow tube slidably connected in the L-shaped moving channel, a sliding part with an I-shaped vertical cross-section provided in the middle of the L-shaped hollow tube, multiple air outlets arranged in a rectangular array on one side wall of the L-shaped hollow tube facing the rear side wall of the evaporator body, each air outlet being fixedly attached to a nozzle, a connecting pipe fixedly connected to one end of the L-shaped hollow tube away from the multiple nozzles, a insert pipe movably inserted into one end of the connecting pipe away from the L-shaped hollow tube, the other end of the insert pipe being connected to an external dry ice cleaning machine through a connecting hose; a movable clamping assembly, the movable clamping assembly being installed on the base and connected to the L-shaped hollow tube and the connecting pipe.

[0006] In a preferred embodiment, the vertical cross-section of the insertion tube is shaped like a ping-pong paddle, the length of the insertion tube is equal to the length of the connecting tube, and the inner wall of the connecting tube is provided with a rubber sealing gasket, the vertical cross-section of which is also shaped like a ping-pong paddle.

[0007] In a preferred embodiment, the movable clamping assembly includes an inverted L-shaped block fixedly attached to the outer wall of the L-shaped hollow tube on the side opposite to the nozzle. A screw is threaded onto the inverted L-shaped block, one end of which is rotatably connected to the rear side wall of the base via a bearing seat, and the other end is fixedly attached to the output shaft of a micro motor, which is fixedly attached to the rear side wall of the base.

[0008] In a preferred embodiment, the movable clamping assembly further includes a vertical rod fixed to the top of the connecting tube. An inverted L-shaped clamping rod is slidably sleeved on the outer side of the vertical rod. A transmission column is fixed to one end of the inverted L-shaped clamping rod near the front side wall of the base, and the other end of the transmission column is movably connected to a transmission groove opened in the front side wall of the base.

[0009] In a preferred embodiment, the vertical cross-section of the transmission groove is shaped like a hockey stick, and the inner width of the transmission groove is equal to the diameter of the transmission column.

[0010] In a preferred embodiment, the inverted L-shaped clamping rod has a clamping groove located directly below the end away from the transmission column at the top of the connecting tube. When the inverted L-shaped clamping rod moves down, it is inserted into the clamping groove and abuts against the top of the insertion tube.

[0011] Compared with the prior art, the evaporator for central air conditioning refrigeration provided by this utility model has at least the following beneficial effects:

[0012] In this invention, when using the evaporator for central air conditioning refrigeration, an external dry ice cleaning machine is activated, and simultaneously, a micro motor drives the screw to rotate. This causes the inverted L-shaped block to move the L-shaped hollow tube within the L-shaped moving channel. Multiple nozzles on the L-shaped hollow tube spray solid dry ice particles onto the inner surface of the evaporator body, achieving rapid cleaning of the evaporator's inner surface. When the L-shaped hollow tube moves to the left, it also moves the connecting tube to the left, while the transmission column moves within the transmission groove. The shape of the transmission groove, combined with the vertical design, causes the inverted L-shaped clamping rod to move up and down to a fixed height on the upright and insert into the clamping groove, abutting against the top of the insertion tube. This prevents the insertion tube from detaching during movement, effectively ensuring the stability between the insertion tube and the connecting tube during evaporator cleaning. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional first-view structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall three-dimensional second-view structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall three-dimensional third-view structure of this utility model;

[0016] Figure 4 This is an enlarged structural diagram of point A of this utility model.

[0017] In the diagram: 1. Evaporator body; 11. Base; 12. L-shaped hollow tube; 121. Sliding part; 122. L-shaped moving channel; 13. Nozzle; 14. Connecting pipe; 15. Insert pipe; 16. Connecting hose; 2. Movable clamping assembly; 21. Inverted L-shaped block; 22. Screw; 23. Upright; 24. Inverted L-shaped clamping rod; 25. Transmission column; 26. Transmission groove; 27. Clamping groove. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] To make the objectives, technical solutions, and advantages of the present utility model embodiments clearer, the technical solutions of the present utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art based on the described embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] Example

[0022] Currently, in central air conditioning, split air conditioning, or industrial refrigeration equipment, the evaporator is the core heat exchange component of the refrigeration system. It cools the air or chilled water through the heat absorption effect of refrigerant evaporation. Currently, evaporators are usually installed in a fixed design, with their inner side facing inwards constantly exposed to airflow or water, making them prone to accumulating dust and other contaminants. The common cleaning method involves disassembling the evaporator to expose the inward-facing side and manually cleaning it. However, this relies on maintenance personnel, is labor-intensive, and cannot respond promptly to cleaning issues.

[0023] For this purpose, please refer to Figures 1-4This utility model provides an evaporator for central air conditioning refrigeration, comprising: a base 11 fixedly connected to the bottom end of the evaporator body 1; an L-shaped moving channel 122 with an L-shaped vertical cross section opened on the base 11; an L-shaped hollow tube 12 slidably connected in the L-shaped moving channel 122; a sliding part 121 with an I-shaped vertical cross section provided in the middle of the L-shaped hollow tube 12; multiple air outlets arranged in a rectangular array on one side wall of the L-shaped hollow tube 12 facing the rear side wall of the evaporator body 1; a nozzle 13 fixedly connected to each air outlet; a connecting pipe 14 fixedly connected to one end of the L-shaped hollow tube 12 away from the multiple nozzles 13; an insert pipe 15 movably inserted into one end of the connecting pipe 14 away from the L-shaped hollow tube 12; and the other end of the insert pipe 15 connected to an external dry ice cleaning machine through a connecting hose 16; and a movable clamping component 2, which is installed on the base 11 and connected to the L-shaped hollow tube 12 and the connecting pipe 14.

[0024] Dry ice cleaning machines are existing technology machines, and their specific working principles can be found on Baidu, so they will not be described in detail here.

[0025] Further as Figures 1-4 As shown, it is worth noting that the vertical cross-section of the insertion tube 15 is shaped like a ping-pong paddle. The length of the insertion tube 15 is equal to the length of the connecting tube 14. The inner wall of the connecting tube 14 is provided with a rubber sealing gasket, and the vertical cross-section of the rubber sealing gasket is also shaped like a ping-pong paddle.

[0026] The rubber sealing gasket is designed to seal the connection and prevent leakage when the insertion tube 15 is inserted into the connecting tube 14.

[0027] Further as Figures 1-4As shown, it is worth noting that, in order to automatically clean the inner surface of the evaporator while further securing the insertion tube 15 to the connecting tube 14, a movable clamping assembly 2 is provided. This assembly includes an inverted L-shaped block 21 fixed to the outer wall of the L-shaped hollow tube 12 on the side opposite to the nozzle 13. A screw 22 is threaded onto the inverted L-shaped block 21. One end of the screw 22 is rotatably connected to the rear wall of the base 11 via a bearing seat, and the other end is fixed to the output shaft of a micro motor. The micro motor is fixed to the rear wall of the base 11. The movable clamping assembly 2 also includes a vertical rod 2 fixed to the top of the connecting tube 14. 3. An inverted L-shaped clamping rod 24 is slidably sleeved on the outer side of the upright 23. A transmission column 25 is fixedly connected to one end of the inverted L-shaped clamping rod 24 near the front side wall of the base 11. The other end of the transmission column 25 is movably connected to the transmission groove 26 opened in the front side wall of the base 11. The vertical cross section of the transmission groove 26 is in the shape of a "hockey stick". The inner width of the transmission groove 26 is equal to the diameter of the transmission column 25. A clamping groove 27 is provided directly below the end of the inverted L-shaped clamping rod 24 away from the transmission column 25, which is located at the top of the connecting tube 14. When the inverted L-shaped clamping rod 24 moves down, it is inserted into the clamping groove 27 and abuts against the top of the insertion tube 15.

[0028] The inner side of the L-shaped hollow tube 12 is hollow, and its solid dry ice particles will flow in the hollow structure and be ejected from multiple nozzles 13.

[0029] The model number of the miniature motor is YJF-6012, and it is commonly used in household appliances.

[0030] As per attached Figure 1 After the L-shaped hollow tube 12 moves to the left and then to the right, it performs a second dry ice cleaning. Subsequently, in conjunction with the movement of the transmission column 25 in the transmission groove 26, the inverted L-shaped clamping rod 24 can actively move upward to disengage from the clamping groove 27 and release the clamping on the top of the insertion tube 15, thereby facilitating the manual removal of the insertion tube 15 from the connecting tube 14.

[0031] In summary: When using the evaporator for central air conditioning refrigeration, by starting the external dry ice cleaning machine and simultaneously driving the screw 22 to rotate via the micro motor, the inverted L-shaped block 21 moves the L-shaped hollow tube 12 within the L-shaped moving channel 122. Multiple nozzles 13 on the L-shaped hollow tube 12 spray solid dry ice particles onto the inner surface of the evaporator body 1, achieving rapid cleaning of the evaporator's inner surface. Cleaning can be achieved without disassembling the evaporator, making the cleaning highly efficient. When the L-shaped hollow tube 12 moves to the left, it also moves the connecting pipe 14 to the left, while the transmission column 25 moves within the transmission groove 26. The shape design of the transmission groove 26 allows the inverted L-shaped clamping rod 24 to move up and down at a fixed height on the upright 23 and insert into the clamping groove 27, abutting against the top of the insertion tube 15. This prevents the insertion tube 15 from detaching during movement, effectively ensuring the stability between the insertion tube 15 and the connecting pipe 14 during evaporator cleaning.

[0032] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by a person skilled in the art to which this utility model pertains. The words "comprising" or "including" and similar terms used in this utility model mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. The words "connected" or "linked" and similar terms are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An evaporator for central air conditioning refrigeration, comprising a base (11) fixedly connected to the bottom end of an evaporator body (1), characterized in that, The base (11) is provided with an L-shaped moving channel (122) with an L-shaped vertical cross section. An L-shaped hollow tube (12) is slidably connected in the L-shaped moving channel (122). A sliding part (121) with an I-shaped vertical cross section is provided in the middle of the L-shaped hollow tube (12). Multiple air outlets arranged in a rectangular array are provided on one side wall of the L-shaped hollow tube (12) facing the rear side wall of the evaporator body (1). A nozzle (13) is fixedly connected to each air outlet. A connecting pipe (14) is fixedly connected to one end of the L-shaped hollow tube (12) away from the multiple nozzles (13). A insertion tube (15) is movably inserted into one end of the connecting pipe (14) away from the L-shaped hollow tube (12). The other end of the insertion tube (15) is connected to an external dry ice cleaning machine through a connecting hose (16). A movable clamping assembly (2) is installed on the base (11) and connected to the L-shaped hollow tube (12) and the connecting tube (14).

2. The evaporator for central air conditioning refrigeration according to claim 1, characterized in that: The vertical cross-section of the insertion tube (15) is shaped like a ping-pong paddle. The length of the insertion tube (15) is equal to the length of the connecting tube (14). The inner wall of the connecting tube (14) is provided with a rubber sealing gasket, and the vertical cross-section of the rubber sealing gasket is also shaped like a ping-pong paddle.

3. The evaporator for central air conditioning refrigeration according to claim 1, characterized in that: The movable clamping assembly (2) includes an inverted L-shaped block (21) fixed to the outer wall of the L-shaped hollow tube (12) on the side opposite to the nozzle (13). A screw (22) is threaded onto the inverted L-shaped block (21). One end of the screw (22) is rotatably connected to the rear side wall of the base (11) through a bearing seat, and the other end is fixed to the output shaft of the micro motor. The micro motor is fixed to the rear side wall of the base (11).

4. The evaporator for central air conditioning refrigeration according to claim 1, characterized in that: The movable clamping assembly (2) also includes a vertical rod (23) fixedly connected to the top of the connecting tube (14). An inverted L-shaped clamping rod (24) is slidably sleeved on the outside of the vertical rod (23). A transmission column (25) is fixedly connected to one end of the inverted L-shaped clamping rod (24) near the front side wall of the base (11). The other end of the transmission column (25) is movably connected to the transmission groove (26) opened in the front side wall of the base (11).

5. An evaporator for central air conditioning refrigeration according to claim 4, characterized in that: The vertical cross-section of the transmission groove (26) is shaped like a hockey stick, and the inner width of the transmission groove (26) is equal to the diameter of the transmission column (25).

6. An evaporator for central air conditioning refrigeration according to claim 5, characterized in that: The inverted L-shaped clamping rod (24) has a clamping groove (27) located directly below the end away from the transmission column (25) on the top of the connecting tube (14). When the inverted L-shaped clamping rod (24) moves down, it is inserted into the clamping groove (27) and abuts against the top of the insertion tube (15).

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