Floating type Freon heat exchanger oil return mechanism

Abstract

The utility model provides a floating type Freon heat exchanger oil return mechanism which comprises a floating block (4) which is arranged in an inner cavity of a Freon heat exchanger (1) and floats between Freon and oil, the floating block (4) is connected with one end of a suction hose (3), and the other end of the suction hose (3) extends out of the Freon heat exchanger (1). The oil suction device can adapt to various working conditions, as the floating block floats between an oil layer and Freon liquid, and the suction port is always located in the oil layer, the problem that the evaporation process is affected due to the fact that oil floats above Freon is avoided, the heat exchange efficiency is improved, and the service life of the oil suction device is prolonged. In addition, the design allows the guide rod, the floating block and the suction port to be taken out by dismounting the mounting bolts, so that the maintenance and early-stage mounting work is simplified, and the maintenance cost and time are reduced.

Description

Technical Field

[0001] This utility model relates to a heat exchanger oil return mechanism, and more particularly to a floating Freon heat exchanger oil return mechanism. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] During operation, the lubricating oil from the compressor used to compress the Freon enters the Freon heat exchanger. Existing technology usually separates the oil through an oil separator, but some oil will still enter the Freon heat exchanger along with the Freon.

[0004] In existing technology, Freon heat exchangers have two oil return ports, designated N6 and N7. Therefore, the oil return process of Freon heat exchangers requires liquid level control at a specific level. Figure 1 The position between n6 and n7 is required for oil to return to the compressor unit via the return oil line. However, the above technical solution is not suitable for oil return operations under various operating conditions. When the liquid level is higher than n6 and n7, the oil level is above n6 and n7, and the Freon solution returns to the compressor unit via the return oil line during oil return operation. When the liquid level is lower than n6 and n7, the oil level is below n6 and n7, and the Freon gaseous state returns to the compressor unit via the return oil line during oil return operation, making oil return operation impossible. The oil floating above the Freon will affect the Freon evaporation process.

[0005] Therefore, a floating Freon heat exchanger oil return mechanism is needed to solve the above problems.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] Purpose of the invention: The technical problem to be solved by this utility model is to provide a floating Freon heat exchanger oil return mechanism to address the shortcomings of the existing technology.

[0008] To solve the above-mentioned technical problems, this utility model discloses a floating Freon heat exchanger oil return mechanism, comprising:

[0009] A float is installed inside the cavity of the Freon heat exchanger, floating between the Freon and the oil. The float is connected to one end of the suction hose, and the other end extends out of the Freon heat exchanger.

[0010] Furthermore, the density of the float material is between that of Freon and oil.

[0011] Furthermore, the float is slidably mounted on the guide rod, which is vertically mounted in the internal cavity of the Freon heat exchanger, with its top installed on the inner wall of the top of the Freon heat exchanger.

[0012] Furthermore, the top of the guide rod is fixedly connected to the mounting flange, which is mounted on the top of the Freon heat exchanger by mounting bolts.

[0013] Furthermore, a lifting ring is fixed to the top of the mounting flange.

[0014] Furthermore, the top of the Freon heat exchanger has a mounting flange with an opening. The inner diameter of the opening is larger than the outer diameter of the float, which is used to remove the float, the guide rod, and the suction hose.

[0015] Furthermore, the bottom dimension of the mounting flange is larger than the opening.

[0016] Furthermore, the Freon heat exchanger is provided with an oil return port, and one end of the suction hose extends out through the oil return port.

[0017] Furthermore, one end of the suction hose extending out of the oil return port is fixedly provided with an installation interface for connecting to an external suction device.

[0018] Furthermore, the suction hose is a metal hose.

[0019] Beneficial effects:

[0020] 1. This utility model can adapt to a variety of working conditions: the oil return mechanism of the floating Freon heat exchanger can automatically adjust the position of the suction port according to the change of Freon liquid level, so that the oil return operation does not depend on a fixed liquid level control point (such as n6 and n7 positions), thereby adapting to a wider range of operating conditions and working condition changes.

[0021] 2. This invention can improve evaporation efficiency: Since the float is floating between the oil layer and the Freon liquid, and ensures that the suction port is always located in the oil layer, it avoids the problem of oil floating above Freon and affecting its evaporation process, thus improving heat exchange efficiency.

[0022] 3. This utility model optimizes the oil return process: by setting the density of the float between that of Freon and that of oil, it can be ensured that it stays stably at the interface between the two, thereby ensuring the effectiveness and continuity of the oil return process and improving the reliability of the system.

[0023] 4. This utility model is easy to maintain and install: The design allows the guide rod, float and suction port to be removed by disassembling the mounting bolts, which simplifies the inspection and initial installation work and reduces maintenance costs and time.

[0024] 5. This utility model can prevent oil retention: Through the floating suction device, it can effectively prevent oil from remaining in the heat exchanger for a long time, reducing the problem of system performance degradation caused by oil accumulation.

[0025] In summary, this invention significantly improves the working efficiency, reliability, and ease of maintenance of Freon heat exchangers. Attached Figure Description

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0027] Figure 1 This is a schematic diagram of the overall structure of existing technology.

[0028] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0029] Figure 3 This is a side view of the present invention.

[0030] In the diagram, 1 is the Freon heat exchanger, 101 is the oil return port; 2 is the installation interface, 3 is the suction hose, 301 is the suction port; 4 is the float, 5 is the guide rod, 6 is the mounting flange, 7 is the mounting bolt, and 8 is the lifting ring. Detailed Implementation

[0031] This utility model provides a floating Freon heat exchanger oil return mechanism, such as Figure 2 and Figure 3 As shown, an installation interface 2 is installed at the oil return port 101 on the Freon heat exchanger 1. A suction hose 3 is installed on the installation interface. The suction hose 3 is made of metal hose. A suction port 301 is installed at the other end of the suction hose 3. A float 4 is connected to the suction port. A guide rod 5 is slidably inserted into the float 4. A limiting device is provided at the bottom of the guide rod 5 to prevent the float 4 from slipping off.

[0032] The density of the float 4 is between that of Freon and oil.

[0033] The upper end of the guide rod 5 is connected to the mounting flange 6. The mounting flange 6 is installed on the top of the Freon heat exchanger 1 by mounting bolts 7. There is an opening on the Freon heat exchanger 1 below the mounting flange 6. The inner diameter of the opening is larger than the outer diameter of the float 4. A lifting ring 8 is installed on the upper end of the mounting flange 6.

[0034] During use, when the Freon liquid level in the Freon heat exchanger 1 changes due to different operating conditions, the buoyancy of the Freon and oil mixture causes the float 4 to float above the Freon and below the oil. This causes the suction port 301 to always move with the liquid level. Then, through the suction hose 3 on the installation interface 2, the oil is extracted from the suction port 301 in conjunction with the external oil return equipment, realizing the oil return operation under different operating conditions and liquid level changes. By removing the installation bolts 7, the installation flange 6 can be removed, and the guide rod 5, float 4, and suction port 3 can be pulled outwards, which facilitates subsequent maintenance and initial installation work.

[0035] This utility model provides a concept and method for a floating Freon heat exchanger oil return mechanism. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A floating freon heat exchanger oil return mechanism characterized by, Comprising: A float (4) is arranged in the internal cavity of the freon heat exchanger (1) and floats between the freon and the oil, one end of the float (4) is connected with the suction hose (3) and the other end extends out of the freon heat exchanger (1).

2. A floating freon heat exchanger oil return mechanism according to claim 1, wherein The density of the material of the float (4) is between the density of the freon and the oil.

3. A floating freon heat exchanger oil return mechanism according to claim 2, wherein The float (4) is slidingly arranged on a guide rod (5), the guide rod (5) is vertically arranged in the internal cavity of the freon heat exchanger (1) and the top is mounted on the inner wall of the top of the freon heat exchanger (1).

4. A floating freon heat exchanger oil return mechanism according to claim 3, wherein The top of the guide rod (5) is fixedly connected with a mounting flange (6), the mounting flange (6) is mounted on the top of the freon heat exchanger (1) through mounting bolts (7).

5. A floating freon heat exchanger oil return mechanism according to claim 4, wherein A lifting eye (8) is fixedly arranged on the top of the mounting flange (6).

6. A floating freon heat exchanger oil return mechanism according to claim 4 wherein, The position where the mounting flange (6) is arranged on the top of the freon heat exchanger (1) is provided with an opening, the inner diameter of the opening is greater than the outer diameter of the float (4), which is used for taking out the float (4), the guide rod (5) and the suction hose (3).

7. A floating freon heat exchanger oil return mechanism according to claim 6 wherein, The bottom of the mounting flange (6) is larger than the opening.

8. A floating freon heat exchanger oil return mechanism according to claim 1 wherein, An oil return port (101) is arranged on the freon heat exchanger (1), one end of the suction hose (3) extends out through the oil return port (101).

9. A floating freon heat exchanger oil return mechanism according to claim 8, wherein An installation interface (2) is fixedly arranged on the end of the suction hose (3) which extends out of the oil return port (101), which is used for connecting with external suction devices.

10. A floating freon heat exchanger oil return mechanism according to claim 1 wherein, The suction hose (3) is a metal hose.

Images