Gas-liquid separation device and heat pump system

Abstract

The utility model belongs to the technical field of heat pumps, and particularly discloses a gas-liquid separation device and a heat pump system. The gas-liquid separation device comprises a separation cylinder and a liquid seal assembly; a separation cavity is formed in the separation cylinder, a mixed working medium inlet, a liquid outlet and a gas outlet which are communicated with the separation cavity are formed in the separation cylinder, and the liquid outlet and the gas outlet are formed in the upper portion and the lower portion of the separation cylinder respectively; the liquid seal assembly is located in the separation cavity and arranged between the mixed working medium inlet and the liquid outlet, the liquid seal assembly comprises a gas blocking piece and an adjusting piece, the gas blocking piece is connected to the inner cavity wall of the separation cylinder, a plurality of through liquid guide holes are formed in the gas blocking piece, and the adjusting piece is movably connected to the separation cylinder and can move to shield at least part of the liquid guide holes. According to the gas-liquid separation device, the mixed working medium with the variable gas-liquid ratio can be effectively separated, the separation efficiency is improved, and the performance of a heat pump system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to a gas-liquid separation device and a heat pump system. Background Art

[0002] A heat pump system is a device that can transfer heat energy from a low-temperature object to a high-temperature object. It can make extensive use of heat from natural resources and waste heat resources, and has the advantages of energy saving and environmental protection. Therefore, it is increasingly used in the field of heating. Heat pump water heaters generally use gas or liquid as the circulating working fluid. For areas with large temperature differences between the four seasons, the operating temperature difference of the heat pump system is large, and a single working fluid cycle cannot meet the thermal energy requirements. To solve the above problems, the heat pump system can use a mixed working fluid, generally a mixture of gas and liquid. The heat pump system needs to fully separate the mixed working fluid through a gas-liquid separator, and then use them as heat sources to achieve heat energy conduction. The separation cleanliness of the mixed working fluid determines the performance parameters of the heat pump.

[0003] Existing gas-liquid separators generally use the flow inertia of the mixed medium to achieve separation, and have a certain effect on mixed working fluids with a fixed gas-liquid ratio. However, when external factors change and cause the gas-liquid ratio of the mixed working fluid to change, especially when the gas ratio increases, the specific gravity of the mixed working fluid becomes smaller and the inertia decreases accordingly. Part of the gas will flow out with the liquid, resulting in poor separation efficiency of the gas-liquid separator, which in turn affects the performance of the heat pump system. Utility Model Content

[0004] The first technical problem solved by the present application is to provide a gas-liquid separation device, which can solve the problem that the existing gas-liquid separator cannot effectively separate according to the change of the gas-liquid ratio of the mixed working fluid and has a poor separation efficiency.

[0005] The second technical problem solved by the present application is to provide a heat pump system having a gas-liquid separation device capable of effectively separating a mixed working fluid with a changing gas-liquid ratio, thereby improving the separation efficiency and enhancing the performance of the heat pump system.

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] The present application provides a gas-liquid separation device, comprising:

[0008] A separation cylinder, wherein the separation cylinder has a separation chamber, and the separation cylinder is provided with a mixed medium inlet, a liquid outlet, and a gas outlet, all of which are connected to the separation chamber, and the liquid outlet and the gas outlet are respectively arranged at the lower part and the upper part of the separation cylinder;

[0009] A liquid seal assembly, wherein the liquid seal assembly is located in the separation chamber and is arranged between the mixed working fluid inlet and the liquid outlet. The liquid seal assembly includes an air baffle and an adjustment plate. The air baffle is connected to the inner cavity wall of the separation cylinder. A plurality of through liquid guide holes are opened on the air baffle. The adjustment plate is movably connected to the separation cylinder. The adjustment plate can move to cover at least part of the liquid guide holes.

[0010] Compared with the background technology, the gas-liquid separation device described in the present application has the following beneficial effects: the liquid outlet and the gas outlet of the separation cylinder are respectively arranged at the upper part and the upper part of the separation cylinder, and the mixed working medium enters the separation chamber from the mixed working medium inlet. The mixed working medium generally has an initial flow rate. After entering the separation chamber, under the action of inertia, the liquid with larger inertia is thrown on the inner cavity wall of the separation cylinder, flows to the lower part along the inner cavity wall, and finally flows out from the liquid outlet; the gas with smaller inertia is separated, rises to the upper part, and finally flows out from the gas outlet to achieve separation; the liquid seal assembly located in the separation chamber and arranged between the mixed working medium inlet and the liquid outlet includes an air baffle and an adjusting plate, the air baffle is connected to the inner cavity wall of the separation cylinder, and a plurality of through liquid guide holes are opened on the air baffle, and the separated liquid continues to flow to the lower part through the liquid guide holes and flows out from the liquid outlet. The regulating plate is movably connected to the separation cylinder. When some external factors change and cause the gas-liquid ratio of the mixed working medium to increase, the regulating plate can move to block at least part of the liquid guide holes, so that a liquid seal area is formed between the air baffle and the liquid outlet. It can be understood that after part of the liquid guide holes are blocked, the flow rate of the liquid outlet becomes smaller accordingly, the liquid will gradually accumulate above the liquid outlet, the liquid level will gradually rise, and finally a liquid seal area will be formed between the air baffle and the liquid outlet. The liquid seal area has a good sealing effect, preventing the gas from flowing out of the liquid outlet, making the gas-liquid separation of the mixed medium more thorough and the separation efficiency higher. When the gas-liquid ratio of the mixed working medium is relatively small, that is, when the liquid ratio is large, the regulating plate will not block the liquid guide holes, and will not affect the liquid flow rate of the liquid outlet, ensuring that the liquid passes through the liquid outlet smoothly after being separated, and the separation efficiency is high.

[0011] In one embodiment, the air baffle and the regulating plate are spaced apart along the axial direction of the separation chamber, the air baffle is located above the regulating plate, and the regulating plate can move along the axial direction to cover a portion of the liquid guide hole.

[0012] In one embodiment, the liquid seal assembly further includes a reset structure, and the reset structure has a movement tendency of driving the adjustment plate to always move toward the air baffle plate to fit and abut against the air baffle plate.

[0013] In one embodiment, the reset structure includes a magnetic member and a magnetic member, one of the magnetic member and the magnetic member is arranged on the air baffle plate, and the other is arranged on the adjustment plate, and the magnetic member and the magnetic member are magnetically attracted to each other.

[0014] In one embodiment, the liquid seal assembly further comprises a guide rail, the guide rail is arranged on the inner cavity wall of the separation cylinder, and the adjustment sheet slides along the guide rail; and / or,

[0015] The liquid seal assembly comprises a limiting member, which is arranged on the inner cavity wall of the separation cylinder and is used to abut against and limit the adjusting piece.

[0016] In one embodiment, the gas-liquid separation device further comprises an air intake conduit, which is inserted into the mixed working medium inlet, has two ends connected, and one end connected to the separation chamber, and the axial direction of the air intake conduit is tangent to the inner cavity wall of the separation cylinder; and / or,

[0017] The gas-liquid separation device also includes a guide vane, which is a spiral plate. The guide vane is connected to the inner cavity wall of the separation cylinder, and the upper end is arranged above the mixed medium inlet. The spiral direction of the guide vane is the same as the flow direction of the mixed medium.

[0018] In one embodiment, the separation cylinder includes a cylindrical section and a conical section arranged up and down, the mixed medium inlet is arranged in the cylindrical section, and the liquid outlet is arranged in the conical section.

[0019] In one embodiment, the gas-liquid separation device further comprises a liquid retaining cover, which is connected to the inner cavity wall of the separation cylinder and is arranged between the mixed working medium inlet and the gas outlet to separate the separation chamber, and the liquid retaining cover is provided with a plurality of through filter holes; and / or,

[0020] The gas-liquid separation device further comprises a liquid retaining ring, which is connected to the inner cavity wall of the separation cylinder and is arranged between the mixed working medium inlet and the gas outlet, and the liquid retaining ring is ring-shaped.

[0021] In one embodiment, the sum of the areas of the plurality of liquid guide holes is equal to the flow area of ​​the liquid outlet; and / or,

[0022] The regulating plate is provided with a plurality of connecting holes, the projections of the connecting holes on the air baffle plate along the axial direction are staggered with the liquid guiding holes, and the sum of the areas of the plurality of connecting holes is equal to the sum of the areas of the plurality of liquid guiding holes.

[0023] The above second technical problem is solved by the following technical solution:

[0024] The present application provides a heat pump system, comprising the above-mentioned gas-liquid separation device.

[0025] The heat pump system described in the present application has the following beneficial effects compared with the background technology: it includes the gas-liquid separation device as described above. The gas-liquid separation device described above improves the separation efficiency by means of the liquid seal assembly located in the separation chamber. When some external factors change and cause the gas-liquid ratio of the mixed working medium to increase, the regulating plate of the liquid seal assembly can move to block part of the liquid guide hole, so that the flow rate of the liquid outlet becomes smaller accordingly, and a liquid seal area is formed between the air baffle and the liquid outlet. The liquid seal area has a good sealing effect, preventing the gas from flowing out of the liquid outlet, so that the gas-liquid separation of the mixed medium is more thorough, ensuring the performance parameters of the heat pump system, and is suitable for working conditions with large temperature differences. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A cross-sectional view of the structure of the gas-liquid separation device provided in an embodiment of the present application;

[0027] Figure 2 A structural perspective view of the gas-liquid separation device provided in an embodiment of the present application in another direction;

[0028] Figure 3 for Figure 2 The cross-sectional view along the AA direction;

[0029] Figure 4 for Figure 2 The cross-sectional view along the BB direction;

[0030] Figure 5 for Figure 3 A partial enlarged schematic diagram of part C in the middle;

[0031] Figure 6 A top view of the structure of the air baffle provided in an embodiment of the present application;

[0032] Figure 7 A top view of the structure of the adjustment sheet provided in the embodiment of the present application;

[0033] Figure 8 Another structural front view of the liquid shield provided in the embodiment of the present application;

[0034] Fig. 9 Another structural top view of the liquid shield provided in an embodiment of the present application.

[0035] Description of labels:

[0036] 1. Separation cylinder; 11. Separation chamber; 12. Mixed medium inlet; 13. Liquid outlet; 14. Gas outlet; 15. Cylinder section; 16. Cone section;

[0037] 2. Liquid seal assembly; 21. Air baffle; 211. Liquid guide hole; 22. Adjustment plate; 221. Communication hole; 23. Reset structure; 231. Magnetic element; 232. Magnetic element; 24. Guide rail; 25. Limiting element;

[0038] 3. Intake duct; 4. Guide vane; 5. Liquid retaining cover; 51. Filter hole; 6. Liquid retaining ring. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] The terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0042] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] like Figure 1-Figure 9 As shown, an embodiment of the present application first provides a gas-liquid separation device, which is used to separate a mixed working medium, where the mixed working medium is composed of a mixture of gas and liquid.

[0044] like Figure 1As shown, the gas-liquid separation device includes a separation cylinder 1 and a liquid seal assembly 2. The separation cylinder 1 has a separation chamber 11, and the separation cylinder 1 is provided with a mixed medium inlet 12, a liquid outlet 13 and a gas outlet 14, all of which are connected to the separation chamber 11. The liquid outlet 13 and the gas outlet 14 are respectively arranged at the lower part and the upper part of the separation cylinder 1. The mixed medium enters the separation chamber 11 from the mixed medium inlet 12. The mixed medium generally has an initial flow rate. After entering the separation chamber 11, under the action of inertia, the liquid with larger inertia is thrown on the inner cavity wall of the separation cylinder 1, and flows to the lower part along the inner cavity wall, and finally flows out from the liquid outlet 13; the gas with smaller inertia is separated, rises to the upper part, and finally flows out from the gas outlet 14 to achieve separation.

[0045] The liquid seal assembly 2 is located in the separation chamber 11 and is arranged between the mixed working medium inlet 12 and the liquid outlet 13. The liquid seal assembly 2 includes an air baffle 21 and an adjusting plate 22. The air baffle 21 is connected to the inner cavity wall of the separation cylinder 1. A plurality of through-flowing liquid guide holes 211 are provided on the air baffle 21. The separated liquid continues to flow downward through the liquid guide holes 211 and flows out from the liquid outlet 13. The adjusting plate 22 is movably connected to the separation cylinder 1. When some external factors change and cause the gas-liquid ratio of the mixed working medium to increase, the adjusting plate 22 can move to cover at least part of the liquid guide holes 211, so that a liquid seal area is formed between the air baffle 21 and the liquid outlet 13. It can be understood that after part of the liquid guide hole 211 is blocked, the flow rate of the liquid outlet 13 becomes smaller accordingly, the liquid will gradually accumulate above the liquid outlet 13, the liquid level will gradually rise, and finally a liquid seal area will be formed between the air baffle 21 and the liquid outlet 13. The liquid seal area has a good sealing effect, preventing the gas from flowing out of the liquid outlet 13, making the gas-liquid separation of the mixed medium more thorough and the separation efficiency higher. When the gas-liquid ratio of the mixed working medium is small, that is, when the liquid ratio is large, the regulating plate 22 will not block the liquid guide hole 211, and will not affect the liquid flow rate of the liquid outlet 13, ensuring that the liquid passes through the liquid outlet 13 smoothly after being separated, and the separation efficiency is high.

[0046] It should be noted that the above gas-liquid ratio may be the ratio of the total volume of the gas phase to the liquid phase, or the weight ratio of the gas phase to the liquid phase per unit volume, and this embodiment does not impose any specific limitation. External factors include but are not limited to external temperature changes or weather changes.

[0047] The movable adjustment structure of the adjustment sheet 22 has multiple implementations. The adjustment sheet 22 can rotate in the separation chamber 11 to cover part of the liquid guide hole 211, or fold open to cover part of the liquid guide hole 211, or move axially to fit and cover part of the liquid guide hole 211, all of which are within the protection scope of the present application. Below, the structure in which the adjustment sheet 22 moves axially to cover part of the liquid guide hole 211 is described.

[0048] Specifically, the air baffle 21 and the regulating piece 22 are arranged axially spaced apart from each other in the separation chamber 11, and the regulating piece 22 can reciprocate axially, and the regulating piece 22 abuts against the air baffle 21 to block part of the liquid guide hole 211. There are also multiple ways to realize the power structure for the axial reciprocating movement of the regulating piece 22.

[0049] In one embodiment, the gravity of the separated liquid and the reset force of the reset structure 23 can be cleverly utilized to achieve this. The regulating sheet 22 is arranged below the air baffle 21. Along the flow direction, the liquid can push the regulating sheet 22 away from the air baffle 21 and flow smoothly to the liquid outlet 13. The liquid seal assembly 2 also includes a reset structure 23, which has a movement tendency of driving the regulating sheet 22 to always move toward the air baffle 21 to fit the air baffle 21. When the gas-liquid ratio of the mixed working medium is small, there is little unseparated gas in the liquid or the liquid is completely separated, and the gravity of the liquid can overcome the force of the reset structure 23 and push the regulating sheet 22 away from the air baffle 21 and flow smoothly to the liquid outlet 13; when the gas-liquid ratio of the mixed working medium is large, part of the gas will flow downward, thereby reducing the gravity of the mixed medium and failing to push the regulating sheet 22. The regulating sheet 22 blocks part of the liquid guide hole 211, and finally forms a liquid seal area between the air baffle 21 and the liquid outlet 13.

[0050] In one embodiment, the reset structure 23 includes a magnetic member 231 and a magnetic member 232, one of which is disposed on the air baffle 21, and the other is disposed on the regulating member 22, and the magnetic member 231 and the magnetic member 232 are magnetically attracted to each other, so that the regulating member 22 fits against the air baffle 21. When the gas-liquid ratio of the mixed working medium is small, the gravity of the liquid can overcome the magnetic attraction between the magnetic member 231 and the magnetic member 232 and push the regulating member 22; when the gas-liquid ratio of the mixed working medium increases, the gravity of the mixed medium cannot overcome the magnetic attraction, and the magnetic member 231 or the magnetic member 232 drives the regulating member 22 to fit against the air baffle 21. The magnetic member 232 can be made of a magnetic material such as a magnet or an electromagnetic structure, and the magnetic member 231 is made of a material that can be adsorbed by the magnetic member 232, such as iron, an iron-based alloy, a magnet, or cement containing iron sand, etc., which is not specifically limited in this embodiment.

[0051] like Figure 5 As shown, the magnetic member 232 is arranged on the air baffle plate 21 and embedded in the lower side of the air baffle plate 21 facing the adjusting plate 22; the magnetic attraction member 231 is arranged on the adjusting plate 22 and embedded in the upper side of the adjusting plate 22 facing the air baffle plate 21, so that the magnetic attraction effect is better and the adjusting plate 22 can be prevented from falling off during liquid sealing.

[0052] To make the axial sliding of the adjusting piece 22 smoother, the liquid seal assembly 2 further includes a guide rail 24, which is arranged on the inner wall of the separation cylinder 1 and extends in the height direction. The adjusting piece 22 slides along the guide rail 24 to avoid being stuck in the separation cylinder 1.

[0053] The liquid seal assembly 2 includes a stopper 25, which is arranged on the inner wall of the separation cylinder 1. The stopper 25 is used to abut against the stopper adjustment sheet 22 to prevent the adjustment sheet 22 from being out of the set position when it moves to the position where the liquid guide hole 211 is not blocked. When the adjustment sheet 22 is arranged below the air baffle 21 and moves axially back and forth, the stopper 25 is a step arranged on the inner wall of the separation cylinder 1, such as Figure 5 As shown, the regulating sheet 22 is pushed downward by the liquid to separate from the air blocking sheet 21 and finally abuts against the limiting member 25 .

[0054] In one embodiment, the sum of the areas of the plurality of liquid guide holes 211 is equal to the flow area of ​​the liquid outlet 13, so as to ensure that the flow rate of the liquid is not affected and the separated liquid can smoothly flow out of the liquid outlet 13 through the liquid guide holes 211. Figure 6 As shown, the multiple liquid guide holes 211 can form two inner and outer circles, and the multiple liquid guide holes 211 in each circle are evenly spaced. When the adjustment plate 22 moves along the axial direction of the separation chamber 11 and fits the air blocking plate 21, the multiple liquid guide holes 211 in the inner circle will be blocked, and the multiple liquid guide holes 211 in the outer circle will remain unobstructed.

[0055] In one embodiment, the regulating sheet 22 is provided with a plurality of connecting holes 221, and the projections of the connecting holes 221 on the air baffle sheet 21 along the axial direction are staggered with the liquid guiding holes 211. When the regulating sheet 22 is attached to the air baffle sheet 21, the staggered connecting holes 221 and the liquid guiding holes 211 will not form a channel; and when the regulating sheet 22 is away from the air baffle sheet 21, the connecting holes 221 can ensure that the regulating sheet 22 will not hinder the flow of the liquid. Preferably, the sum of the areas of the plurality of connecting holes 221 is equal to the sum of the areas of the plurality of liquid guiding holes 211, so as to ensure that the flow rate of the liquid will not be affected.

[0056] In order to better guide the mixed working medium, the gas-liquid separation device also includes an air intake conduit 3, which is inserted into the mixed working medium inlet 12, and the two ends of the air intake conduit 3 are connected, and one end is connected to the separation chamber 11, and the axial direction of the air intake conduit 3 is tangent to the inner cavity wall of the separation cylinder 1. After the mixed medium enters the separation chamber 11 from the air intake conduit 3, it has centrifugal force under the action of the flow rate. The centrifugal forces of gas and liquid are different, which further accelerates the separation speed and makes the separation more thorough. This embodiment does not limit the diameter of the air intake conduit 3, and its diameter will affect the flow rate of the mixed medium. The flow rate of the mixed medium is preferably 4m / s-10m / s.

[0057] In order to achieve tangency between the axial direction of the air inlet duct 3 and the inner wall of the separation cylinder 1 , the mixed medium inlet 12 penetrates the cylinder wall of the separation cylinder 1 , and the opening in the inner wall is in a horizontal water drop shape.

[0058] In one embodiment, the gas-liquid separation device further includes a guide vane 4, which is a spiral plate, connected to the inner cavity wall of the separation cylinder 1, and the upper end is arranged above the mixed medium inlet 12, the spiral direction of the guide vane 4 is the same as the flow direction of the mixed medium, and the mixed medium entering from the mixed medium inlet 12 flows in a spiral shape under the action of the guide vane 4, and its centrifugal force can be further increased, thereby accelerating the separation speed of the mixed medium and making the separation more thorough. Preferably, the extension length of the guide vane 4 is not greater than 1 / 4 of the circumference of the separation cylinder 1 to avoid obstruction to the downward flow of the liquid.

[0059] In one embodiment, the separation cylinder 1 includes a cylindrical section 15 and a conical section 16 arranged up and down, the mixed medium inlet 12 is arranged at the cylindrical section 15, and the liquid outlet 13 is arranged at the conical section 16. The cross-sectional area of ​​the conical section 16 gradually decreases, and the flow rate of the mixed medium will be further accelerated after entering the conical section 16, and the centrifugal force will be further increased accordingly, and part of the gas remaining in the liquid will be further separated in the conical section 16 and run upward. Preferably, the cone angle range of the conical section 16 is 40°-80°, and the ratio of the height of the conical section 16 to the total height of the separation cylinder 1 is 50%-80%.

[0060] In one embodiment, the gas-liquid separation device also includes a liquid blocking cover 5, which is connected to the inner cavity wall of the separation cylinder 1 and is arranged between the mixed working fluid inlet 12 and the gas outlet 14 to separate the separation chamber 11. The liquid blocking cover 5 is provided with a plurality of through filter holes 51. The liquid blocking cover 5 can filter and block the residual liquid in the rising gas in the area above the mixed working fluid inlet 12. After the liquid is intercepted by the liquid blocking cover 5, it will flow to the liquid outlet 13 at the bottom. The liquid blocking cover 5 can be umbrella-shaped, with the tip facing the gas outlet 14; or the liquid blocking cover 5 can be partially spherical and protrude toward the gas outlet 14. Both structures are conducive to guiding the intercepted liquid to flow downward. Of course, the liquid blocking cover 5 can also be planar. Preferably, the diameter of the filter hole 51 is 2mm-4mm.

[0061] In one embodiment, the gas-liquid separation device further includes a liquid blocking ring 6, which is connected to the inner cavity wall of the separation cylinder 1 and is disposed between the mixed working medium inlet 12 and the gas outlet 14. The liquid blocking ring 6 is annular and blocks part of the liquid flowing toward the gas outlet 14. Preferably, the liquid blocking cover 5 is disposed above the liquid blocking ring 6 and between the liquid blocking ring 6 and the gas outlet 14.

[0062] The embodiment of the present application also provides a heat pump system, which includes a gas-liquid separation device as described above. The gas-liquid separation device improves the separation efficiency by means of the liquid seal component 2 located in the separation chamber 11. When some external factors change and cause the gas-liquid ratio of the mixed working medium to increase, the regulating plate 22 of the liquid seal component 2 can move to block part of the liquid guide hole 211, so that the flow rate of the liquid outlet 13 becomes smaller accordingly, and a liquid seal area is formed between the air baffle 21 and the liquid outlet 13. The liquid seal area has a good sealing effect, preventing the gas from flowing out of the liquid outlet 13, so that the gas-liquid separation of the mixed medium is more thorough, ensuring the performance parameters of the heat pump system, and is suitable for working conditions with large temperature differences.

[0063] The above heat pump system can be applied to water heaters or other heating equipment, and this embodiment does not impose any specific limitation.

[0064] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0065] The specific contents of the above specific implementation methods only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. Gas-liquid separation device, It is characterized in that include: A separation cylinder (1), wherein the separation cylinder (1) has a separation chamber (11) therein, the separation cylinder (1) is provided with a mixed medium inlet (12), a liquid outlet (13) and a gas outlet (14) all of which are connected to the separation chamber (11), and the liquid outlet (13) and the gas outlet (14) are respectively arranged at the lower part and the upper part of the separation cylinder (1); A liquid seal assembly (2), the liquid seal assembly (2) being located in the separation chamber (11) and being arranged between the mixed working medium inlet (12) and the liquid outlet (13), the liquid seal assembly (2) comprising an air baffle (21) and an adjusting plate (22), the air baffle (21) being connected to the inner cavity wall of the separation cylinder (1), the air baffle (21) being provided with a plurality of through-going liquid guide holes (211), the adjusting plate (22) being movably connected to the separation cylinder (1), and the adjusting plate (22) being movable to cover at least part of the liquid guide holes (211).

2. The gas-liquid separation device according to claim 1, It is characterized in that The air baffle (21) and the regulating plate (22) are arranged at intervals along the axial direction of the separation chamber (11); the air baffle (21) is located above the regulating plate (22); and the regulating plate (22) is capable of moving along the axial direction to cover a portion of the liquid guide hole (211).

3. The gas-liquid separation device according to claim 2, It is characterized in that The liquid sealing assembly (2) further comprises a reset structure (23), wherein the reset structure (23) has a movement tendency of driving the regulating plate (22) to always move in the direction of the air baffle plate (21) so as to fit and abut against the air baffle plate (21).

4. The gas-liquid separation device according to claim 3, It is characterized in that The reset structure (23) comprises a magnetic member (231) and a magnetic member (232); one of the magnetic member (231) and the magnetic member (232) is arranged on the air baffle (21), and the other is arranged on the adjustment plate (22); the magnetic member (231) and the magnetic member (232) are magnetically attracted to each other.

5. The gas-liquid separation device according to any one of claims 1 to 4, It is characterized in that The liquid seal assembly (2) further comprises a guide rail (24), wherein the guide rail (24) is arranged on the inner cavity wall of the separation cylinder (1), and the adjustment piece (22) slides along the guide rail (24); and / or, The liquid seal assembly (2) comprises a limiting member (25), the limiting member (25) being arranged on the inner cavity wall of the separation cylinder (1), and the limiting member (25) being used to abut against and limit the adjusting piece (22).

6. The gas-liquid separation device according to any one of claims 1 to 4, It is characterized in that The gas-liquid separation device further comprises an air intake conduit (3), the air intake conduit (3) being inserted into the mixed working medium inlet (12), the air intake conduit (3) having two ends connected thereto and one end connected to the separation chamber (11), the axial direction of the air intake conduit (3) being tangent to the inner cavity wall of the separation cylinder (1); and / or, The gas-liquid separation device further comprises a guide vane (4), the guide vane (4) being a spiral plate, the guide vane (4) being connected to the inner cavity wall of the separation cylinder (1), and the upper end of the guide vane (4) being arranged above the mixed working medium inlet (12), and the spiral direction of the guide vane (4) being the same as the flow direction of the mixed working medium.

7. The gas-liquid separation device according to any one of claims 1 to 4, It is characterized in that The separation cylinder (1) comprises a cylindrical section (15) and a conical section (16) arranged vertically, the mixed medium inlet (12) being arranged at the cylindrical section (15), and the liquid outlet (13) being arranged at the conical section (16).

8. The gas-liquid separation device according to any one of claims 1 to 4, It is characterized in that The gas-liquid separation device further comprises a liquid retaining cover (5), the liquid retaining cover (5) being connected to the inner cavity wall of the separation cylinder (1) and being arranged between the mixed working medium inlet (12) and the gas outlet (14) to separate the separation chamber (11), the liquid retaining cover (5) being provided with a plurality of through-going filter holes (51); and / or, The gas-liquid separation device further comprises a liquid retaining ring (6), which is connected to the inner cavity wall of the separation cylinder (1) and is arranged between the mixed working medium inlet (12) and the gas outlet (14), and the liquid retaining ring (6) is ring-shaped.

9. The gas-liquid separation device according to any one of claims 1 to 4, It is characterized in that The sum of the areas of the plurality of liquid guide holes (211) is equal to the flow area of ​​the liquid outlet (13); and / or, The regulating plate (22) is provided with a plurality of communicating holes (221), the projections of the communicating holes (221) on the air baffle plate (21) along the axial direction are arranged alternately with the liquid guiding holes (211), and the sum of the areas of the plurality of communicating holes (221) is equal to the sum of the areas of the plurality of liquid guiding holes (211).

10. Heat pump system, It is characterized in that It comprises a gas-liquid separation device as described in any one of claims 1 to 9.

Images