Gas-liquid separator with auxiliary heating function

Abstract

The invention belongs to the technical field of refrigeration, and particularly relates to a gas-liquid separator with an auxiliary heating function, which comprises a separation box, and the top of the separation box is provided with a gas inlet pipe and an exhaust assembly; the exhaust assembly comprises a main air outlet pipe and a connecting sleeve, the main air outlet pipe is connected with the oil return assembly through the connecting sleeve, the oil return assembly comprises an oil return head and a rotating sleeve, and an oil return hole is formed in the oil return head. The oil return holes in the top of the oil return head are sparse and small in hole diameter, and the oil return holes in the bottom of the oil return head are dense and large in hole diameter. Therefore, an oil layer at the layered liquid-state bottom can enter the oil return head more easily through the oil return hole at the bottom of the oil return head, and meanwhile, the small-aperture oil return hole at the top of the oil return head can slow down the liquid-state refrigerant at the layered liquid-state top from entering the oil return head. Liquid refrigerants can be prevented from entering the compressor through the oil return head and the main air outlet pipe.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration, and particularly relates to a gas-liquid separator with an auxiliary heating function. Background Art

[0002] A gas-liquid separator is provided between the evaporator and the compressor of a refrigeration system. Its function is to separate the liquid droplets in the medium, and then vaporize in the gas-liquid separator and enter the compressor to prevent the liquid droplets from entering the compressor and causing "liquid hammer" to the compressor.

[0003] When the gas-liquid separator is working, it needs to separate the gas-liquid mixture output by the evaporator. The gaseous refrigerant enters the compressor through the pipeline, while the liquid refrigerant and the refrigeration oil sink to the bottom of the separator. The liquid refrigerant at the bottom of the separator needs to absorb heat and vaporize to enter the compressor. This process requires a large amount of heat for the gas-liquid separator to meet the vaporization. If the heat source is insufficient, the compressor needs to provide a greater suction force to increase the vaporization speed, resulting in an increase in the energy consumption of the compressor and a decrease in the working efficiency of the system. Therefore, the auxiliary heating function is very necessary for the gas-liquid separator.

[0004] For example, in the invention patent with the publication number CN114046618A, the bottom of the separator is heated through an auxiliary heating chamber to provide a heat source for the vaporization of the liquid refrigerant. The following problems exist when this solution is used; First, in the state of stable air flow inside the separator, due to the density of the refrigeration oil being greater than that of the refrigerant, the liquid refrigerant and the refrigeration oil at the bottom of the separator are prone to stratification. In the gas-liquid separator, the refrigeration oil with a greater density tends to sink to the bottom, while the refrigerant with a smaller density is more distributed in the upper layer. During the process of heating the bottom of the separator, the heat needs to be conducted through the oil layer to the liquid refrigerant, resulting in a decrease in the vaporization efficiency of the liquid refrigerant and easy accumulation of liquid at the bottom of the separator.

[0005] Second, due to the stratification of the liquid refrigerant and the refrigeration oil at the bottom of the separator, the vaporization efficiency of the liquid refrigerant is reduced. When the oil liquid enters the pipeline through the oil return hole, the liquid refrigerant will enter the pipeline together with the oil liquid and be sucked into the compressor through the pipeline, resulting in the liquid refrigerant hitting the compressor. Summary of the Invention

[0006] The purpose of the present invention is to provide a gas-liquid separator with an auxiliary heating function for the deficiencies of the prior art to solve the technical problems in the prior art.

[0007] The object of the present invention can be achieved by the following technical solutions: A gas-liquid separator with an auxiliary heating function, which includes a separation box. An intake pipe and an exhaust assembly are installed at the top of the separation box. The intake pipe is connected to an evaporator, and the exhaust assembly is connected to a compressor. The exhaust assembly includes a main outlet pipe and a connecting sleeve. The main outlet pipe is connected to an oil return assembly through the connecting sleeve. The oil return assembly includes an oil return head and a rotating sleeve. A threaded ring groove is provided in the connecting sleeve, and the rotating sleeve is slidably engaged with the threaded ring groove through a guide block thereon. An oil return hole is provided in the oil return head, and the number of oil return holes gradually increases from the top to the bottom of the oil return head. A heat collection assembly is installed inside the separation box. The heat collection assembly includes a partition plate, a heat conduction plate, and a side plate. The partition plate divides the internal space of the separation box into a separation chamber and a heating chamber. The oil return head is rotatably installed on the partition plate. A cylinder is installed at the bottom of the separation box, and the cylinder drives the partition plate to move up and down. The exhaust assembly and the oil return assembly are arranged in the separation chamber. The heat conduction plate is slidably installed in the heating chamber. A heat collection table is installed on the heat conduction plate. A side plate is installed on the side wall of the heating chamber. A heating plate is rotatably installed on the side plate. A toothed shaft is installed on the heating plate. A rack plate is installed at the bottom of the partition plate, and the rack plate is engaged with the toothed shaft.

[0008] As a further optimization or improvement of this solution, the exhaust assembly further includes a side outlet pipe, and the side outlet pipe is communicated with the main outlet pipe and the pipe orifice faces upward.

[0009] As a further optimization or improvement of this solution, air vent holes are provided on the side wall of the heating chamber.

[0010] As a further optimization or improvement of this solution, a guide sleeve is installed on the side plate, and the guide sleeve is slidably engaged with the rack plate.

[0011] As a further optimization or improvement of this solution, an internal gear ring is installed in the oil return head, and the oil return head is drivingly connected to a cleaning assembly through the internal gear ring. The cleaning assembly includes a fixed rod and a cleaning bucket. One end of the fixed rod is fixedly installed on the partition plate, and the other end is connected to the cleaning bucket.

[0012] As a further optimization or improvement of this solution, a cleaning block is slidably installed in the cleaning bucket. A driven convex roller is rotatably installed in the cleaning bucket. A fixed block is installed at the bottom of the cleaning bucket. A bottom block is installed at the bottom of the driven convex roller. An arc-shaped spring is installed between the bottom block and the fixed block.

[0013] As a further optimization or improvement of this solution, a driving convex roller is rotatably installed in the cleaning bucket. A gear is installed on the driving convex roller, and the gear is engaged with the internal gear ring. A telescopic push plate is installed at the bottom of the driving convex roller. A fixed push plate is installed at the top of the driven convex roller. The driving convex roller drives the driven convex roller to rotate through the telescopic push plate, so that the driving convex roller and the driven convex roller drive the cleaning block to eject towards the outside of the cleaning bucket.

[0014] The beneficial effects of the present invention: (1) In the present invention, the cylinder drives the partition plate and the rack plate to move downward. Under the action of the meshing between the rack plate and the gear shaft, the downward movement of the partition plate drives the heating plate to rotate, causing the partition plate to rotate from the horizontal direction to the vertical direction. As the partition plate moves downward, the heat collection platform on the heat conduction plate protrudes from within the partition plate, placing the heat collection platform in the stratified liquid at the bottom of the separation chamber. As the partition plate continues to move downward, the partition plate drives the heat conduction plate to move downward synchronously, causing the heating plate to enter the heat collection platform. At this time, the heating plate directly conducts heat to the top-layer liquid refrigerant through the heat collection platform, reducing heat loss.

[0015] When the working environment of the heating plate switches from the heating chamber to the heat collection platform, due to the reduction in the working space of the heating plate, the heating efficiency of the heating plate increases, accelerating the gasification of the top-layer liquid refrigerant and preventing the refrigerant liquid droplets from entering the main exhaust pipe through the oil return hole and being sucked into the compressor.

[0016] (2) The oil return holes at the top of the oil return head of the present invention are relatively sparse and have a small aperture, while the oil return holes at the bottom of the oil return head are relatively dense and have a large aperture. Therefore, the oil layer at the bottom of the stratified liquid is more likely to enter the oil return head through the oil return holes at the bottom of the oil return head. At the same time, the small-aperture oil return holes at the top of the oil return head can slow down the entry of the liquid refrigerant at the top of the stratified liquid into the oil return head. In combination with the direct heating of the liquid refrigerant by the heat collection platform, it can prevent the liquid refrigerant from entering the compressor through the oil return head and the main exhaust pipe, avoiding the impact of liquid droplet refrigerant on the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the connection structure of the exhaust component and the oil return component.

[0020] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the overall structure of the exhaust component.

[0022] Figure 5 It is an exploded view of the exhaust component structure.

[0023] Figure 6 It is a schematic diagram of the internal structure of the oil return head.

[0024] Figure 7 It is a sectional view of the structure of the cleaning bucket.

[0025] Figure 8 It is Figure 7 an enlarged view of the structure of part A of

[0026] Figure 9 It is a schematic diagram of the internal structure of the cleaning bucket.

[0027] Figure 10 It is Figure 9 an enlarged view of the structure of part B of

[0028] Figure 11 It is an exploded view of the structure of the heat collection component.

[0029] Figure 12 It is a sectional view of the overall structure of the heat collection component.

[0030] Figure 13 It is a transmission connection diagram of the gear shaft and the rack plate.

[0031] The labels in the figure are: 1. Separation box; 101. Separation cavity; 102. Heating cavity; 103. Vent hole; 2. Exhaust component; 201. Side air outlet pipe; 202. Main air outlet pipe; 203. Connecting sleeve; 204. Threaded ring groove; 3. Air inlet pipe; 4. Cylinder; 5. Oil return component; 501. Oil return head; 502. Rotating sleeve; 503. Guide block; 504. Internal gear ring; 505. Oil return hole; 6. Heat collection component; 601. Partition plate; 602. Heat conducting plate; 603. Side plate; 604. Heat collection table; 605. Rack plate; 606. Heating plate; 607. Gear shaft; 608. Guide sleeve; 8. Cleaning component; 801. Fixed rod; 802. Cleaning bucket; 803. Gear; 804. Active convex roller; 805. Driven convex roller; 806. Cleaning block; 808. Telescopic push plate; 809. Fixed push plate; 810. Fixed block; 811. Bottom block; 812. Arc spring. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0033] Refer to Figures 1-4 , Figures 11-13, A gas-liquid separator with an auxiliary heating function, which includes a separation box 1. An intake pipe 3 and an exhaust assembly 2 are installed at the top of the separation box 1. The intake pipe 3 is connected to an evaporator, and the exhaust assembly 2 is connected to a compressor; the exhaust assembly 2 includes a main outlet pipe 202 and a connecting sleeve 203. The main outlet pipe 202 is connected to an oil return assembly 5 through the connecting sleeve 203. The oil return assembly 5 includes an oil return head 501 and a rotating sleeve 502. A threaded ring groove 204 is provided in the connecting sleeve 203. The rotating sleeve 502 is slidably matched with the threaded ring groove 204 through a guide block 503 thereon. An oil return hole 505 is provided on the oil return head 501, and the number of oil return holes 505 gradually increases from the top to the bottom of the oil return head 501; a heat collection assembly 6 is installed inside the separation box 1. The heat collection assembly 6 includes a partition plate 601, a heat conduction plate 602, and a side plate 603. The partition plate 601 divides the internal space of the separation box 1 into a separation chamber 101 and a heating chamber 102. The oil return head 501 is rotatably installed on the partition plate 601. A cylinder 4 is installed at the bottom of the separation box 1, and the cylinder 4 drives the partition plate 601 to move up and down. The exhaust assembly 2 and the oil return assembly 5 are arranged in the separation chamber 101. The heat conduction plate 602 is slidably installed in the heating chamber 102. A heat collection table 604 is installed on the heat conduction plate 602. The side plate 603 is installed on the side wall of the heating chamber 102. A heating plate 606 is rotatably installed on the side plate 603. A toothed shaft 607 is installed on the heating plate 606. A rack plate 605 is installed at the bottom of the partition plate 601, and the rack plate 605 is engaged with the toothed shaft 607.

[0034] Specifically, the exhaust assembly 2 further includes a side outlet pipe 201. The side outlet pipe 201 is communicated with the main outlet pipe 202, and the pipe orifice faces upward.

[0035] Specifically, a guide sleeve 608 is installed on the side plate 603, and the guide sleeve 608 is slidably matched with the rack plate 605.

[0036] It should be noted that in the initial state, the heating plates 606 are all in a horizontal state, and the liquid at the bottom of the separation chamber 101 is heated by the heating plates 606.

[0037] When the separator is in use, the intake pipe 3 is connected to the evaporator, and the exhaust assembly 2 is connected to the compressor. When the refrigeration system operates, the evaporator transports the gas-liquid mixture through the intake pipe 3 into the separation chamber 101. The liquid refrigerant and the refrigeration oil fall to the bottom of the separation chamber 101 under the action of gravity, and the gaseous refrigerant floats on the top of the separation chamber 101. The suction force generated by the operation of the compressor sucks the gaseous refrigerant into the compressor through the side outlet pipe 201 and the main outlet pipe 202.

[0038] Regarding the phenomenon that the liquid refrigerant and the refrigeration oil are stratified at the bottom of the separation chamber 101, if the bottom of the separation chamber 101 is directly heated through the heating chamber 102, the heat will first be conducted to the oil layer, and then conducted from the oil layer to the liquid refrigerant, resulting in a delay in the vaporization of the liquid refrigerant, an increase in the vaporization time, and heat loss.

[0039] Based on this, the present invention drives the partition plate 601 and the rack plate 605 to move downward through the air cylinder 4. Refer to Figures 11-13 , under the action of the engagement between the rack plate 605 and the tooth shaft 607, the downward movement of the partition plate 601 drives the heating plate 606 to rotate, so that the partition plate 601 rotates from the horizontal direction to the vertical direction. As the partition plate 601 moves downward, the heat collecting table 604 on the heat conducting plate 602 protrudes from the partition plate 601, so that the heat collecting table 604 is placed in the stratified liquid at the bottom of the separation chamber 101. As the partition plate 601 continues to move downward, the partition plate 601 drives the heat conducting plate 602 to move downward synchronously, so that the heating plate 606 enters the heat collecting table 604. At this time, the heating plate 606 directly conducts heat to the top layer of liquid refrigerant through the heat collecting table 604, reducing heat loss; when the working environment of the heating plate 606 is switched from the heating chamber 102 to the heat collecting table 604, due to the reduction of the working space of the heating plate 606, the heating efficiency of the heating plate 606 increases, accelerating the gasification of the top layer of liquid refrigerant and preventing the refrigerant liquid beads from entering the main air outlet pipe 202 through the oil return hole 505 and being sucked into the compressor by the compressor.

[0040] It should be noted that a pneumatic opening and closing structure can be provided at the bottom opening of the heat collecting table 604 to further reduce heat loss.

[0041] Specifically, the way of the refrigerant oil at the bottom of the separation chamber 101 enters the compressor; first, the refrigerant oil enters the bottom of the main air outlet pipe 202 through the oil return hole 505 on the oil return head 501, and then the suction force generated by the compressor sucks the oil through the main air outlet pipe 202 into the compressor. During this process, the liquid refrigerant at the bottom of the separation chamber 101 will follow the refrigerant oil and enter the bottom of the main air outlet pipe 202 through the oil return hole 505 on the oil return head 501 and be sucked into the compressor, resulting in the refrigerant liquid droplets hitting the compressor.

[0042] Based on this, the oil return holes 505 at the top of the oil return head 501 of the present invention are arranged relatively sparsely and have a smaller aperture, and the oil return holes 505 at the bottom of the oil return head 501 are arranged relatively densely and have a larger aperture. Therefore, the oil layer at the bottom of the stratified liquid is more likely to enter the oil return head 501 through the oil return holes 505 at the bottom of the oil return head 501. At the same time, the small-aperture oil return holes 505 at the top of the oil return head 501 can slow down the entry of the liquid refrigerant at the top of the stratified liquid into the oil return head 501. Combined with the way of directly heating the liquid refrigerant by the heat collecting table 604, it can prevent the liquid refrigerant from entering the compressor through the oil return head 501 and the main air outlet pipe 202.

[0043] Refer to Figures 2-3 , a ventilation hole 103 is provided on the side wall of the heating chamber 102.

[0044] It should be noted that the purpose of the ventilation holes 103 is to allow the heating chamber 102 to ventilate and dissipate heat more quickly. When there is no liquid accumulation at the bottom of the separator, the heating plate 606 is promptly turned off and the ventilation holes 103 are opened to prevent the heating plate 606 from continuously roasting the bottom of the separator.

[0045] See Figures 4-10 , an internal gear ring 504 is installed inside the oil return head 501. The oil return head 501 is drivingly connected to the cleaning assembly 8 through the internal gear ring 504. The cleaning assembly 8 includes a fixed rod 801 and a cleaning barrel 802. One end of the fixed rod 801 is fixedly installed on the partition plate 601, and the other end is connected to the cleaning barrel 802.

[0046] Specifically, a cleaning block 806 is slidably installed inside the cleaning barrel 802. A driven convex roller 805 is rotatably installed inside the cleaning barrel 802. A fixed block 810 is installed at the bottom of the cleaning barrel 802. A bottom block 811 is installed at the bottom of the driven convex roller 805. An arc-shaped spring 812 is installed between the bottom block 811 and the fixed block 810.

[0047] Specifically, a driving convex roller 804 is rotatably installed inside the cleaning barrel 802. A gear 803 is installed on the driving convex roller 804. The gear 803 meshes with the internal gear ring 504. A telescopic push plate 808 is installed at the bottom of the driving convex roller 804. A fixed push plate 809 is installed at the top of the driven convex roller 805. The driving convex roller 804 drives the driven convex roller 805 to rotate through the telescopic push plate 808, so that the driving convex roller 804 and the driven convex roller 805 drive the cleaning block 806 to eject towards the outside of the cleaning barrel 802.

[0048] It should be noted that, taking Figure 4 as an example, the oil return holes 505 are arranged in five layers. The two layers of oil return holes 505 at the top of the oil return head 501 are small holes, and the three layers of oil return holes 505 at the bottom are large holes. The arrangement density of the large holes at the bottom of the oil return holes 505 is twice that of the small holes at the top. The arrangement density and number of layers of the oil return holes 505 shall be subject to actual use.

[0049] It should be noted that when the oil liquid enters the oil return head 501 through the oil return holes 505, the impurities mixed in the oil liquid are likely to block the oil return holes 505. Due to the different arrangement densities of the oil return holes 505 at the top and bottom of the oil return head 501, the cleaning structures in the prior art cannot effectively clean each oil return hole 505.

[0050] Based on this, when the present invention pulls down the partition plate 601 through the cylinder 4, see Figure 5 , the partition plate 601 drives the oil return head 501 to move downward synchronously. Under the sliding fit of the guide block 503 and the threaded ring groove 204, the oil return head 501 moves downward and rotates. Since the cleaning barrel 802 is fixedly installed on the partition plate 601 through the fixed rod 801, when the partition plate 601 drives the fixed rod 801 and the oil return head 501 to move downward synchronously, the oil return head 501 rotates and the cleaning barrel 802 remains relatively stationary.

[0051] See Figure 6 , the oil return head 501 drives the gear 803 to rotate through the internal gear ring 504. See Figure 7 , the gear 803 drives the driving convex roller 804 to rotate. See Figure 8 , during the rotation of the driving convex roller 804, the driving convex roller 804 drives the fixed push plate 809 and the driven convex roller 805 to rotate synchronously through the telescopic push plate 808. At the same time, the arc spring 812 is stretched. As the driving convex roller 804 and the driven convex roller 805 rotate synchronously, the convex surfaces of the driving convex roller 804 and the driven convex roller 805 push the cleaning block 806 to move outward from the cleaning bucket 802. See Figure 6 , so that the cleaning block 806 impacts the debris in the oil return hole 505, thereby cleaning the oil return hole 505. When the driving convex roller 804 drives the driven convex roller 805 to rotate to a specified position, the arc spring 812 is stretched to the limit. At this time, the telescopic push plate 808 contracts under the action of the rebound of the arc spring 812, so that the telescopic push plate 808 disengages from the fixed push plate 809, and the driven convex roller 805 returns to its original position under the action of the arc spring 812. During the process of the driven convex roller 805 returning to its original position, the convex surface on the driven convex roller 805 pushes the cleaning block 806 again to impact the oil return hole 505 at the bottom of the oil return head 501, and so on.

[0052] Therefore, during one rotation of the driving convex roller 804, the driving convex roller 804 cleans the oil return hole 505 at the top of the oil return head 501 once through the cleaning block 806, and the driven convex roller 805 cleans the oil return hole 505 at the bottom of the oil return head 501 twice through the cleaning block 806, ensuring that the oil return head 501 can clean the oil return holes 505 with different layout densities at the top and bottom.

[0053] It should be noted that the driving convex roller 804 and the driven convex roller 805 are made of magnetic materials, and the cleaning block 806 is made of magnetic metal, so that one end of the cleaning block 806 always adheres to the driving convex roller 804 and the driven convex roller 805; it can also be replaced by adding a spring to the cleaning block 806.

[0054] Working principle of the present invention: When the separator is in use, the intake pipe 3 is connected to the evaporator, and the exhaust assembly 2 is connected to the compressor. When the refrigeration system operates, the evaporator transports the gas-liquid mixture into the separation chamber 101 through the intake pipe 3. The liquid refrigerant and the refrigerating oil fall to the bottom of the separation chamber 101 under the action of gravity, and the gaseous refrigerant floats on the top of the separation chamber 101. The suction generated by the operation of the compressor sucks the gaseous refrigerant into the compressor through the side outlet pipe 201 and the main outlet pipe 202.

[0055] In view of the phenomenon that the liquid refrigerant and the refrigeration oil are stratified at the bottom of the separation chamber 101, if the bottom of the separation chamber 101 is heated directly through the heating chamber 102, the heat will first be transferred to the oil layer, and then from the oil layer to the liquid refrigerant, resulting in delayed vaporization of the liquid refrigerant, increased vaporization time, and heat loss.

[0056] Based on this, the present invention drives the partition plate 601 and the rack plate 605 to move downward by the cylinder 4, see Figures 11-13 Under the action of the meshing of the rack plate 605 and the gear shaft 607, the partition plate 601 moves downward to drive the heating plate 606 to rotate, so that the partition plate 601 rotates from the horizontal direction to the vertical direction. As the partition plate 601 moves downward, the heat collecting platform 604 on the heat conducting plate 602 protrudes from the partition plate 601, so that the heat collecting platform 604 is placed in the layered liquid at the bottom of the separation chamber 101. As the partition plate 601 continues to move downward, the partition plate 601 drives the heat conducting plate 602 to move downward synchronously, so that the heating plate 606 enters the heat collecting platform 604. At this time, the heating plate 606 directly transfers the heat to the top layer of liquid refrigerant through the heat collecting platform 604, thereby reducing heat loss. When the working environment of the heating plate 606 is switched from the heating chamber 102 to the heat collecting platform 604, the working space of the heating plate 606 is reduced, and the heating efficiency of the heating plate 606 is increased, thereby accelerating the vaporization of the top layer of liquid refrigerant, thereby preventing the refrigerant droplets from entering the main air outlet pipe 202 through the oil return hole 505 and being sucked into the compressor.

[0057] Specifically, the refrigerant oil at the bottom of the separation chamber 101 enters the compressor in the following manner: the refrigerant oil first enters the bottom of the main air outlet pipe 202 through the oil return hole 505 on the oil return head 501, and then the suction force generated by the compressor sucks the oil into the compressor through the main air outlet pipe 202. In this process, the liquid refrigerant at the bottom of the separation chamber 101 will follow the refrigerant oil through the oil return hole 505 on the oil return head 501 and enter the bottom of the main air outlet pipe 202, and be sucked into the compressor, causing the refrigerant droplets to hit the compressor.

[0058] Based on this, the oil return holes 505 at the top of the oil return head 501 of the present invention are relatively sparse and have a smaller aperture, while the oil return holes 505 at the bottom of the oil return head 501 are relatively dense and have a larger aperture. Therefore, the oil layer at the bottom of the stratified liquid state is more likely to enter the oil return head 501 through the oil return holes 505 at the bottom of the oil return head 501. At the same time, the small-aperture oil return holes 505 at the top of the oil return head 501 can slow down the liquid refrigerant at the top of the stratified liquid state from entering the oil return head 501. In combination with the direct heating of the liquid refrigerant by the heat collecting platform 604, the liquid refrigerant can be prevented from entering the compressor through the oil return head 501 and the main air outlet pipe 202.

[0059] Specifically, when the oil fluid enters the oil return head 501 through the oil return hole 505, the impurities mixed in the oil fluid are likely to block the oil return hole 505. Due to the different layout densities of the oil return holes 505 at the top and bottom of the oil return head 501, the cleaning structure of the prior art cannot effectively clean each oil return hole 505.

[0060] Based on this, when the present invention pulls down the partition plate 601 through the cylinder 4, refer to Figure 5 , the partition plate 601 drives the oil return head 501 to move downward synchronously. Under the sliding fit of the guide block 503 and the threaded ring groove 204, the oil return head 501 moves downward and rotates. Since the cleaning barrel 802 is fixedly installed on the partition plate 601 through the fixed rod 801, when the partition plate 601 drives the fixed rod 801 and the oil return head 501 to move downward synchronously, the oil return head 501 rotates and the cleaning barrel 802 remains relatively stationary.

[0061] Refer to Figure 6 , the oil return head 501 drives the gear 803 to rotate through the internal gear ring 504. Refer to Figure 7 , the gear 803 drives the driving convex roller 804 to rotate. Refer to Figure 8 , during the rotation of the driving convex roller 804, the driving convex roller 804 drives the fixed push plate 809 and the driven convex roller 805 to rotate synchronously through the telescopic push plate 808. At the same time, the arc spring 812 is stretched. As the driving convex roller 804 and the driven convex roller 805 rotate synchronously, the convex surfaces of the driving convex roller 804 and the driven convex roller 805 push the cleaning block 806 to move outward from the cleaning barrel 802. Refer to Figure 6 , so that the cleaning block 806 impacts the debris in the oil return hole 505, thereby cleaning the oil return hole 505. When the driving convex roller 804 drives the driven convex roller 805 to rotate to a specified position, the arc spring 812 is stretched to the limit. At this time, the telescopic push plate 808 contracts under the elastic return of the arc spring 812, so that the telescopic push plate 808 disengages from the fixed push plate 809, and the driven convex roller 805 resets under the action of the arc spring 812. During the reset process of the driven convex roller 805, the convex surface on the driven convex roller 805 pushes the cleaning block 806 again to impact the oil return hole 505 at the bottom of the oil return head 501, and so on.

[0062] Therefore, during one rotation of the driving convex roller 804, the driving convex roller 804 cleans the oil return hole 505 at the top of the oil return head 501 once through the cleaning block 806, and the driven convex roller 805 cleans the oil return hole 505 at the bottom of the oil return head 501 twice through the cleaning block 806, ensuring that the oil return head 501 can clean the oil return holes 505 with different layout densities at the top and bottom.

[0063] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A gas-liquid separator with an auxiliary heating function, characterized in that: It comprises a separation box (1), an air intake pipe (3) and an exhaust assembly (2) are installed on the top of the separation box (1), the air intake pipe (3) is connected to the evaporator, and the exhaust assembly (2) is connected to the compressor; The exhaust assembly (2) comprises a main air outlet pipe (202) and a connecting sleeve (203); the main air outlet pipe (202) is connected to the oil return assembly (5) via the connecting sleeve (203); the oil return assembly (5) comprises an oil return head (501) and a rotating sleeve (502); a threaded ring groove (204) is provided in the connecting sleeve (203); the rotating sleeve (502) is slidably matched with the threaded ring groove (204) via a guide block (503) thereon; the oil return head (501) is provided with oil return holes (505); the number of the oil return holes (505) gradually increases from the top to the bottom of the oil return head (501); The separation box (1) has a heat collecting assembly (6) installed inside. The heat collecting assembly (6) comprises a partition plate (601), a heat conducting plate (602) and a side plate (603). The partition plate (601) divides the internal space of the separation box (1) into a separation chamber (101) and a heating chamber (102). The oil return head (501) is rotatably installed on the partition plate (601). A cylinder (4) is installed at the bottom of the separation box (1). The cylinder (4) drives the partition plate (601) to rise and fall. The exhaust assembly (2) and the return oil head (501) are The oil assembly (5) is arranged in the separation chamber (101), a heat conducting plate (602) is slidably installed in the heating chamber (102), a heat collecting platform (604) is installed on the heat conducting plate (602), a side plate (603) is installed on the side wall of the heating chamber (102), a heating plate (606) is rotatably installed on the side plate (603), a gear shaft (607) is installed on the heating plate (606), a rack plate (605) is installed at the bottom of the partition plate (601), and the rack plate (605) is meshed with the gear shaft (607).

2. The gas-liquid separator with an auxiliary heating function according to claim 1, characterized in that: The exhaust assembly (2) further comprises a side air outlet pipe (201), the side air outlet pipe (201) being in communication with the main air outlet pipe (202) and having an opening facing upwards.

3. The gas-liquid separator with an auxiliary heating function according to claim 1, characterized in that: The side wall of the heating chamber (102) is provided with an air hole (103).

4. The gas-liquid separator with an auxiliary heating function according to claim 1, characterized in that: A guide sleeve (608) is installed on the side plate (603), and the guide sleeve (608) is slidably matched with the rack plate (605).

5. The gas-liquid separator with an auxiliary heating function according to claim 1, characterized in that: An internal gear ring (504) is installed in the oil return head (501), and the oil return head (501) is transmission-connected to a cleaning assembly (8) via the internal gear ring (504). The cleaning assembly (8) comprises a fixed rod (801) and a cleaning bucket (802). One end of the fixed rod (801) is fixedly mounted on the partition plate (601), and the other end is connected to the cleaning bucket (802).

6. The gas-liquid separator with an auxiliary heating function according to claim 5, characterized in that: A cleaning block (806) is slidably mounted in the cleaning barrel (802), a driven convex roller (805) is rotatably mounted in the cleaning barrel (802), a fixed block (810) is mounted at the bottom of the cleaning barrel (802), a bottom block (811) is mounted at the bottom of the driven convex roller (805), and an arc spring (812) is mounted between the bottom block (811) and the fixed block (810).

7. The gas-liquid separator with an auxiliary heating function according to claim 6, characterized in that: An active convex roller (804) is rotatably installed in the cleaning bucket (802). A gear (803) is installed on the active convex roller (804). The gear (803) meshes with an internal gear ring (504). A telescopic push plate (808) is installed at the bottom of the active convex roller (804). A fixed push plate (809) is installed at the top of the driven convex roller (805). The active convex roller (804) drives the driven convex roller (805) to rotate through the telescopic push plate (808), so that the active convex roller (804) and the driven convex roller (805) drive the cleaning block (806) to eject towards the outside of the cleaning bucket (802).

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