Detachable evaporator calandria
By designing a detachable evaporator coil, and utilizing a combination of connecting nuts and threaded pipes, partial replacement of the evaporator coil is achieved, solving the high cost problem caused by overall replacement, reducing usage costs, and improving disassembly and assembly efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG ZHONGNUO REFRIGERATION EQUIP CO LTD
- Filing Date
- 2025-05-06
- Publication Date
- 2026-04-14
AI Technical Summary
The existing evaporator pipes require complete replacement when some sections are damaged, resulting in high operating costs.
The evaporator coil design allows for detachable connection of straight and curved coils through a combination of connecting nuts, threaded pipes, and sealing gaskets. This enables the coils to be separated and replaced when partially damaged, avoiding the need for complete replacement.
It reduces the cost of using evaporator coils, avoids leakage and slippage issues, and improves disassembly and assembly efficiency.
Smart Images

Figure CN224121440U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of evaporator pipe technology, specifically relating to a detachable evaporator pipe. Background Technology
[0002] Evaporator coils are key heat exchange components in refrigeration systems. Evaporator coils absorb heat through the evaporation of refrigerant (such as R410A, R32, etc.) inside the coils, carrying away the heat from the surrounding medium (air, water, or refrigerant) to achieve cooling or temperature reduction.
[0003] The existing evaporator tubes consist of two parts, a straight tube section and a bent tube section, in a reciprocating shape. During the heat exchange process, there are the following defects: (1) The tube sections are easily damaged by the fouling and corrosion caused by the medium during the heat exchange process. In order to avoid affecting the refrigeration use, the entire tube needs to be replaced, which leads to the problem of high cost of using the evaporator tubes. Therefore, we propose a detachable evaporator tube. Utility Model Content
[0004] The purpose of this invention is to provide a detachable evaporator pipe array to solve the problem mentioned in the background art that when a section of the evaporator pipe array is damaged, the entire array needs to be replaced, resulting in high operating costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a detachable evaporator pipe, comprising a straight pipe and a curved pipe, wherein a connecting nut is fitted on the outer wall of the straight pipe, and a connecting cap is fitted on the outer wall of the connecting nut, the connecting cap being fixed to the surface of the straight pipe, and an outer groove with a circular cross-section is formed on the outer wall of the connecting nut, a stop block is provided on the inner side of the outer groove, the stop block being fixed to the inner wall of the connecting cap, and a threaded pipe is threadedly connected to the inside of the connecting nut, the threaded pipe being fixed to the end of the curved pipe.
[0006] Preferably, both the threaded pipe and the straight pipe have circular cross-sections, and their outer diameters are equal.
[0007] Preferably, two sealing gaskets are provided between the threaded pipe and the straight pipe, and the two sealing gaskets are respectively fixed on the end face of the corresponding threaded pipe and the end face of the straight pipe.
[0008] Preferably, the cross-section of the connecting nut is circular, and the longitudinal section of the connecting nut is I-shaped.
[0009] Preferably, an anti-slip sleeve is fitted onto the outer wall of one end of the connecting nut.
[0010] Preferably, the end of the connecting cap and the surface of the straight pipe are connected together by a rib plate, and the cross-section of the rib plate is a triangular structure.
[0011] Preferably, the connecting cap has a circular cross-section, and the connecting cap and the straight pipe are connected by welding.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] (1) By designing the connecting cap, stop, threaded pipe, connecting nut, and outer groove, the traditional pipe arrangement is divided into multiple straight pipes and curved pipes. Align one end of the straight pipe with the threaded pipe of the curved pipe, slide the connecting nut up so that it fits on the threaded pipe, and then rotate the connecting nut to connect the two pipes by threading the nut and the threaded pipe. When replacing pipes in some positions, screw the connecting nut to separate it from the threaded pipe and slide it into the connecting cap. This allows the straight pipe and the curved pipe to be disassembled and separated. This invention does not require complete replacement when there is partial damage, reducing the cost of use. By designing two sealing gaskets, the interface between the threaded pipe and the straight pipe is pressed to achieve a tight seal at the interface and prevent leakage. By designing the anti-slip sleeve, the friction coefficient of the outer surface of the connecting nut is increased, so that the connecting nut will not slip when it is turned by hand, thus affecting the disassembly and assembly effect. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This utility model Figure 1 Enlarged view of point A in the image;
[0016] Figure 3 This is an assembly cross-sectional view of the straight pipe, the bent pipe, the connecting nut, and the threaded pipe of this utility model;
[0017] Figure 4 This is an assembly diagram of the connecting cap, connecting nut, and straight pipe of this utility model;
[0018] Figure 5 This is a schematic diagram of the assembly of the threaded pipe and sealing gasket of this utility model;
[0019] In the diagram: 1. Straight pipe; 2. Connecting cap; 3. Outer groove; 4. Bent pipe; 5. Threaded pipe; 6. Connecting nut; 7. Anti-slip sleeve; 8. Rib plate; 9. Sealing gasket; 10. Stop block. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Example
[0022] Please see Figures 1 to 5 This utility model provides a technical solution: a detachable evaporator pipe, including a straight pipe 1 and a curved pipe 4. A connecting nut 6 is fitted onto the outer wall of the straight pipe 1, and a connecting cap 2 is fitted onto the outer wall of the connecting nut 6. The connecting cap 2 is fixed to the surface of the straight pipe 1. An outer groove 3 with a circular cross-section is formed on the outer wall of the connecting nut 6. A stop 10 is provided on the inner side of the outer groove 3 and is fixed to the inner wall of the connecting cap 2. A threaded pipe 5 is threadedly connected to the inside of the connecting nut 6 and is fixed to the end of the curved pipe 4. Through the designed connecting cap 2, stop 10, threaded pipe 5, connecting nut 6, and outer groove 3, the traditional pipe can be divided into multiple straight pipes. The device consists of a straight pipe 1 and a curved pipe 4. One end of the straight pipe 1 is aligned with the threaded pipe 5 of the curved pipe 4. The connecting nut 6 is slid up and placed on the threaded pipe 5. Then, the connecting nut 6 is rotated to connect the two pipes by screwing them together. When replacing a portion of the pipe, the connecting nut 6 is screwed off from the threaded pipe 5 and slid into the connecting cap 2. This allows the straight pipe 1 and the curved pipe 5 to be disassembled and separated. This invention eliminates the need for complete replacement when partial damage occurs, reducing usage costs. Both the threaded pipe 5 and the straight pipe 1 have circular cross-sections and the outer diameters of the two pipes are equal.
[0023] In this embodiment, preferably, two sealing gaskets 9 are provided between the threaded pipe 5 and the straight pipe 1. The two sealing gaskets 9 are designed to press against the interface between the threaded pipe 5 and the straight pipe 1 to achieve a tight seal at the interface between the two, thus preventing leakage. The two sealing gaskets 9 are respectively fixed on the end face of the corresponding threaded pipe 5 and the end face of the straight pipe 1.
[0024] In this embodiment, preferably, the cross-section of the connecting nut 6 is circular, the longitudinal section of the connecting nut 6 is I-shaped, and an anti-slip sleeve 7 is fitted onto the outer wall of one end of the connecting nut 6. The anti-slip sleeve 7 is designed to increase the friction coefficient of the outer surface of the connecting nut 6, so that the connecting nut 6 will not slip when it is turned by hand, thus affecting the disassembly and assembly effect.
[0025] In this embodiment, preferably, the end of the connecting cap 2 and the surface of the straight pipe 1 are connected together by a rib plate 8. The cross-section of the rib plate 8 is a triangular structure. The rib plate 8 is designed and installed on the connecting cap 2 and the straight pipe 1 to reinforce the installation of both, so as to prevent the connecting cap 2 from cracking and affecting the pipe connection firmness of this utility model. The cross-section of the connecting cap 2 is a circular structure. The connecting cap 2 and the straight pipe 1 are connected by welding.
[0026] The working principle and usage process of this utility model are as follows: This utility model disassembles the traditional pipe arrangement into multiple straight pipes 1 and curved pipes 4. One end of the straight pipe 1 and the threaded pipe 5 of the curved pipe 4 are aligned, and the connecting nut 6 is slid up to fit onto the position of the threaded pipe 5. Then, the connecting nut 6 is rotated to connect the threaded pipe 5, thus connecting the two pipes together. When replacing a portion of the pipe, the connecting nut 6 is screwed off to separate it from the threaded pipe 5, and then slid into the connecting cap 2. This allows the straight pipe 1 and the curved pipe 5 to be disassembled and separated. This utility model eliminates the need for complete replacement when partial damage occurs, reducing usage costs.
[0027] 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. A detachable evaporator pipe array, comprising straight pipe array (1) and bent pipe array (4), characterized in that: The outer wall of the straight pipe (1) is fitted with a connecting nut (6), and the outer wall of the connecting nut (6) is fitted with a connecting cap (2). The connecting cap (2) is fixed on the surface of the straight pipe (1). The outer wall of the connecting nut (6) has an outer groove (3) with a circular cross-section. A stop block (10) is provided on the inner side of the outer groove (3). The stop block (10) is fixed on the inner wall of the connecting cap (2). The inside of the connecting nut (6) is connected to a threaded pipe (5) by a thread. The threaded pipe (5) is fixed to the end of the curved pipe (4).
2. The detachable evaporator pipe according to claim 1, characterized in that: Both the threaded pipe (5) and the straight pipe (1) have circular cross-sections, and the outer diameters of the threaded pipe (5) and the straight pipe (1) are equal.
3. The detachable evaporator pipe according to claim 1, characterized in that: Two sealing gaskets (9) are provided between the threaded pipe (5) and the straight pipe (1), and the two sealing gaskets (9) are respectively fixed on the end face of the corresponding threaded pipe (5) and the end face of the straight pipe (1).
4. A detachable evaporator pipe according to claim 1, characterized in that: The cross-section of the connecting nut (6) is circular, and the longitudinal section of the connecting nut (6) is I-shaped.
5. A detachable evaporator pipe according to claim 1, characterized in that: An anti-slip sleeve (7) is fitted onto the outer wall of one end of the connecting nut (6).
6. A detachable evaporator pipe according to claim 1, characterized in that: The end of the connecting cap (2) and the surface of the straight pipe (1) are connected together by a rib plate (8), and the cross section of the rib plate (8) is a triangular structure.
7. A detachable evaporator pipe according to claim 1, characterized in that: The connecting cap (2) has a circular cross-section, and the connecting cap (2) and the straight pipe (1) are connected by welding.