Rectifier and heat pump system

Abstract

The utility model relates to the technical field of heat pump systems, and discloses a rectifier and a heat pump system.The rectifier is used for the heat pump system and mainly comprises a separator body, and a liquid storage cavity, a first-stage separation cavity, a first filling layer, a second-stage separation cavity and a second filling layer which are sequentially communicated from bottom to top are arranged in the separator body; the first-stage separation cavity is connected with a feeding pipe, the liquid storage cavity is connected with a liquid outlet pipe, the first-stage separation cavity is communicated with the second-stage separation cavity through a bypass pipeline, and a switch valve is arranged on the bypass pipeline. When the liquid sealing effect of the liquid storage cavity is not good, the switching valve is opened, part of gas-liquid two-phase bodies enter the first-stage separation cavity and then directly enter the second-stage separation cavity from the bypass pipeline, the liquid drainage speed of the liquid storage cavity is reduced so that the liquid storage amount in the liquid storage cavity can be increased, the liquid level height can be increased, and when the liquid level of the liquid storage cavity is too high, the switching valve is closed so that the gas-liquid two-phase bodies can be separated. And the liquid storage cavity is always in a liquid sealing state, so that the gas working medium is effectively prevented from flowing out of the liquid outlet pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pump systems, in particular to a rectifier and a heat pump system. Background Art

[0002] The main function of the rectifier in the heat pump system is to separate the gas-liquid two-phase working fluid in the operation of the heat pump system to prevent the compressor of the heat pump system from liquid hammer and excessive working fluid from diluting the compressor oil.

[0003] Existing rectifiers cannot effectively control the liquid level in the liquid storage chamber. When the liquid level in the liquid storage chamber drops to a certain height, the liquid seal of the liquid storage chamber deteriorates, and the gas working medium easily flows out of the liquid outlet pipe of the liquid storage chamber, resulting in poor gas-liquid separation effect. Utility Model Content

[0004] The first technical problem solved by the present invention is to provide a rectifier, which effectively solves the problem that the liquid sealing effect of the liquid storage cavity in the rectifier is poor, and part of the gas working medium easily flows out of the liquid outlet pipe, resulting in poor gas-liquid separation effect.

[0005] The second technical problem solved by the present invention is to provide a heat pump system, which effectively solves the problem that the liquid sealing effect of the liquid storage cavity in the distillation device is poor, and part of the gas working medium easily flows out of the liquid outlet pipe, resulting in poor gas-liquid separation effect.

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

[0007] A distillation device, used in a heat pump system, comprises: a separator body, wherein the separator body is provided with a liquid storage chamber, a first-level separation chamber, a first filling layer, a second-level separation chamber and a second filling layer which are connected in sequence from bottom to top, the first-level separation chamber is connected to a feed pipe, the liquid storage chamber is connected to a liquid outlet pipe, the first-level separation chamber is connected to the second-level separation chamber via a bypass pipe, and the bypass pipe is provided with a switch valve.

[0008] Compared with the prior art, the rectifier of the present invention has the following advantages: by providing a bypass pipe between the first separation chamber and the second separation chamber, and providing an on-off valve on the bypass pipe, when the liquid sealing effect of the liquid storage chamber is poor, the on-off valve is opened, and after the gas-liquid two-phase body outputted from the feed pipe enters the first separation chamber, part of the gas-liquid two-phase body directly enters the second separation chamber through the bypass pipe. This part of the gas-liquid two-phase body only needs to flow through the second filling layer, thereby improving the exhaust efficiency, reducing the gas pressure in the liquid storage chamber, thereby reducing the liquid discharge rate of the liquid storage chamber, thereby increasing the liquid storage capacity in the liquid storage chamber and raising the liquid level. When the liquid level in the liquid storage chamber is too high, the amount of refrigerant participating in the heating cycle of the heat pump system will be reduced, thereby affecting the heating efficiency of the heat pump. Therefore, when the liquid level in the liquid storage chamber is too high, the on-off valve can be closed, so that all the gas-liquid two-phase body needs to pass through the first filling layer and the second filling layer for double separation, thereby reducing the exhaust efficiency, increasing the gas pressure in the liquid storage chamber, and increasing the liquid discharge rate of the liquid storage chamber to reduce the liquid level. This repeated cycle maintains the liquid level within the reservoir within a certain range, meaning the reservoir is always sealed, effectively preventing the gaseous working medium from escaping from the outlet pipe and improving the gas-liquid separation effect. At the same time, it ensures that there is sufficient refrigerant to participate in the heat pump system's heating cycle, thereby maintaining the system's heating efficiency.

[0009] In one embodiment, it also includes a controller and a liquid level sensor. The liquid level sensor is arranged in the liquid storage chamber and is used to detect the liquid level height in the liquid storage chamber. The controller is electrically connected to the switch valve and the liquid level sensor respectively. The controller is used to control the switch valve to open or close according to the liquid level height detected by the liquid level sensor.

[0010] In one embodiment, it further includes an air storage cavity, the second filling layer is arranged between the secondary separation cavity and the air storage cavity, and the top of the separator body is provided with an air outlet pipe connected to the air storage cavity.

[0011] In one embodiment, the liquid storage cavity is provided with a liquid storage space and a third filling layer located at the upper end of the liquid storage space, a first baffle is provided between the third filling layer and the first separation cavity, and a plurality of first through holes are provided on the first baffle.

[0012] In one embodiment, a second baffle is provided between the primary separation chamber and the first filling layer, and the second baffle is provided with a plurality of second through holes, and the density of the plurality of first through holes is less than the density of the plurality of second through holes.

[0013] In one embodiment, a plurality of the first through holes are spaced apart at an edge of the first baffle.

[0014] In one embodiment, the first filling layer, the second filling layer, and the third filling layer are all filled with filling bodies of regular shape and / or irregular shape.

[0015] In one embodiment, the regular shape includes at least one of a triangular spiral shape, a spherical shape, and a ring shape.

[0016] In one embodiment, one end of the feed pipe is connected to the primary separation chamber by passing through the liquid storage chamber, and the outlet faces upward.

[0017] The second technical problem mentioned above is solved by the following technical solution:

[0018] A heat pump system comprises the above-mentioned rectifier.

[0019] Compared with the background technology, the heat pump system described in the present invention has the following beneficial effects: the heat pump system with the rectifier can maintain the liquid level height of the liquid storage chamber within a certain range by controlling the opening and closing of the switch valve, ensuring that the liquid storage chamber is always in a liquid-sealed state, with better gas-liquid separation effect, and can also ensure that there is sufficient refrigerant to participate in the heating cycle of the heat pump system, so as to ensure the heating efficiency of the heat pump system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural schematic diagram of a rectifier according to an embodiment of the present utility model;

[0022] Figure 2 This is a cross-sectional view of a rectifier according to an embodiment of the present utility model;

[0023] Figure 3 This is a structural schematic diagram of a filling body of a rectifier according to an embodiment of the present utility model;

[0024] Figure 4 This is a front view of a filling body of a rectifier according to an embodiment of the present utility model;

[0025] Figure 5 This is a top view of a filling body of a rectifier according to an embodiment of the present utility model;

[0026] Figure 6 This is a partial structural diagram of a rectifier according to an embodiment of the present utility model;

[0027] Figure 7 A control flow chart of the rectifier.

[0028] Explanation of reference signs:

[0029] 1, separator body; 2, liquid storage cavity; 201, liquid storage space; 202, third filling layer; 3, first separation cavity; 4, first filling layer; 5, second separation cavity; 6, second filling layer; 7, feed pipe; 8, liquid outlet pipe; 9, bypass pipeline; 10, on-off valve; 11, liquid level sensor; 12, gas storage cavity; 13, gas outlet pipe; 14, first baffle; 15, first through hole; 16, second baffle; 17, second through hole; 18, filling body; 19, fourth baffle; 20, fifth baffle; 21, sixth baffle; 22, third baffle. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0032] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0033] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] The embodiments of the present application are described below Figures 1 to 7 in conjunction with

[0035] According to the embodiments of the present application, on the one hand, as Figure 1 indicated, a rectifier is provided, mainly comprising a separator body 1.

[0036] The rectifier described in the embodiments of the present application is mainly used for a heat pump system and can improve the gas-liquid separation effect. The compressor of the heat pump system inputs the gas-liquid two-phase body with a certain initial gas pressure to the rectifier through the condenser, and separates the gas working medium and the liquid working medium from the rectifier.

[0037] Further, as Figure 1 indicated, the separator body 1 is provided with a liquid storage cavity 2, a first separation cavity 3, a first filling layer 4, a second separation cavity 5 and a second filling layer 6 which are sequentially communicated from bottom to top. The first separation cavity 3 is connected with a feeding pipe 7, and the gas-liquid two-phase body enters the first separation cavity 3 from the feeding pipe 7. The liquid working medium in the gas-liquid two-phase body flows downward to the liquid storage cavity 2 under the influence of gravity. The gas working medium and part of the liquid working medium in the bubble liquid state in the gas-liquid two-phase body flow upward. The gas working medium passes through the first filling layer 4 and the second filling layer 6 upward. The liquid working medium in the bubble liquid state is blocked at the first filling layer 4 and the second filling layer 6 and is gathered into the liquid working medium flowing downward to the liquid storage cavity 2.

[0038] The liquid storage cavity 2 is connected with a liquid outlet pipe 8, and the separated liquid working medium is discharged from the liquid outlet pipe 8. The liquid storage cavity 2 stores a certain liquid level of liquid working medium to prevent the gas working medium from flowing out of the liquid outlet pipe 8 directly. The first separation cavity 3 is communicated with the second separation cavity 5 through a bypass pipe 9, and the bypass pipe 9 is provided with an on-off valve 10. According to the liquid level in the liquid storage cavity 2, the on-off valve 10 is controlled to be opened or closed.

[0039] It can be seen that the distillation device provided by the embodiment of the present invention is configured by arranging a bypass pipe 9 between the first-level separation chamber 3 and the second-level separation chamber 5, and arranging a switch valve 10 on the bypass pipe 9. When the liquid sealing effect of the liquid storage chamber 2 is not good, the switch valve 10 is opened, and the gas-liquid two-phase body output by the feed pipe 7 enters the first-level separation chamber 3. Part of the gas-liquid two-phase body directly enters the second-level separation chamber 5 from the bypass pipe 9. This part of the gas-liquid two-phase body only needs to flow through the second filling layer 6, thereby improving the exhaust efficiency, reducing the air pressure in the liquid storage chamber 2, thereby reducing the discharge speed of the liquid storage chamber 2, thereby increasing the liquid storage capacity in the liquid storage chamber 2, and raising the liquid level. When the liquid level in the liquid storage chamber 2 is too high, the amount of refrigerant participating in the heating cycle of the heat pump system will decrease, thereby affecting the heating efficiency of the heat pump. Therefore, when the liquid level in the liquid storage chamber 2 is too high, the switch valve 10 can be closed so that all gas-liquid two-phase bodies need to pass through the first filling layer 4 and the second filling layer 6 for separation twice, thereby reducing the exhaust efficiency, causing the gas pressure in the liquid storage chamber 2 to increase, thereby increasing the drainage speed of the liquid storage chamber 2 to reduce the liquid level. This repeated cycle can maintain the liquid level in the liquid storage chamber 2 within a certain range, that is, the liquid storage chamber 2 is always in a liquid-sealed state, thereby effectively preventing the gas working medium from flowing out of the liquid outlet pipe 8 and improving the gas-liquid separation effect. At the same time, it can ensure that there is enough refrigerant participating in the heating cycle of the heat pump system to ensure the heating efficiency of the heat pump system.

[0040] In one embodiment, the rectifier further includes a controller and a liquid level sensor 11. The liquid level sensor 11 is disposed within the liquid storage chamber 2 and is configured to detect the liquid level within the liquid storage chamber 2. The controller is electrically connected to the on-off valve 10 and the liquid level sensor 11, respectively. The controller is configured to control the on-off valve 10 to open or close based on the liquid level detected by the liquid level sensor 11. The controller enables automatic control of the on-off valve 10, thereby automatically maintaining the liquid storage chamber 2 in a liquid-sealed state, further enhancing the gas-liquid separation effect.

[0041] Specifically, the controller selects and sets the preset low liquid level and the preset high liquid level of the liquid storage chamber 2 according to actual needs. For example, the preset low liquid level is Figure 1 As shown in the liquid level A, the preset high liquid level is as follows Figure 1 As shown by the liquid level B in Figure 7 As shown, when the liquid level sensor 11 detects that the liquid level in the liquid storage chamber 2 has dropped to a preset low level, the controller controls the switch valve 10 to open and raise the liquid level. When the liquid level sensor 11 detects that the liquid level in the liquid storage chamber 2 has risen to a preset high level, the controller controls the switch valve 10 to close and lower the liquid level.

[0042] It should be noted that the controller can be any existing controller as needed. For example, the controller can be an existing controller such as a micro control unit (MCU), a central processing unit, an electronic controller unit (ECU), etc. Of course, other conventional controllers can also be selected as needed. The embodiments of the present application do not limit this.

[0043] In addition, the embodiments of the present application also do not limit the liquid level sensor 11 and the on-off valve 10. For example, the liquid level sensor 11 can be a conventional structure such as a differential pressure liquid level meter or a float liquid level meter. The on-off valve 10 can be an electromagnetic valve.

[0044] In one embodiment, as shown in Figure 1 The rectifier further includes a gas storage cavity 12 for collecting the separated gas working medium. The second filling layer 6 is arranged between the secondary separation cavity 5 and the gas storage cavity 12, and the top of the separator body 1 is provided with a gas outlet pipe 13 in communication with the gas storage cavity 12.

[0045] The gas working medium and a small amount of bubble liquid state liquid working medium entering the secondary separation cavity 5 continue to flow upward into the second filling layer 6. The gas working medium can directly pass through the second filling layer 6 and continue to flow upward into the gas storage cavity 12 for storage and be discharged through the gas outlet pipe 13. The bubble liquid state liquid working medium cannot continue to flow upward due to the resistance of the second filling layer 6 during the upward process, and a liquid film is gradually formed in the second filling layer 6, which is gathered to form liquid working medium under the influence of tension. The liquid working medium gathered to a certain amount can overcome the upward gas pressure and flow downward through the secondary separation cavity 5 under the influence of gravity, then flow to the first filling layer 4, and finally enter the primary separation cavity 3 after passing through the first filling layer 4, and finally merge with the liquid working medium in the gas-liquid two-phase body output by the feed pipe 7.

[0046] In one embodiment, as shown in Figure 1 and Figure 2 The liquid storage cavity 2 is provided with a liquid storage space 201 and a third filling layer 202 located at the upper end of the liquid storage space 201, and a first baffle 14 is arranged between the third filling layer 202 and the primary separation cavity 3. A plurality of first through holes 15 are formed in the first baffle 14. The plurality of first through holes 15 are arranged at the edges of the first baffle 14. In addition, a fourth baffle 19 is arranged between the liquid storage space 201 and the third filling layer 202, and a plurality of fourth through holes are formed in the fourth baffle 19.

[0047] When the switch valve 10 is closed, after the gas-liquid two-phase body enters the first separation chamber 3, the gas working medium and a portion of the liquid working medium in the bubble liquid state move upward into the first filling layer 4. The gas working medium and a very small portion of the liquid working medium in the bubble liquid state can directly pass through the first filling layer 4 and continue upward into the secondary separation chamber 5. The liquid working medium in the bubble liquid state is affected by the resistance of the first filling layer 4 during the upward process and cannot continue to move upward. A liquid film gradually forms in the first filling layer 4, and the liquid film gathers under the influence of tension to form a liquid working medium. After the liquid working medium gathers to a certain amount, it can overcome the upward air pressure and flow downward to the first separation chamber 3 under the influence of gravity, and finally merge with the liquid working medium in the gas-liquid two-phase body output by the feed pipe 7.

[0048] The liquid working medium in the gas-liquid two-phase solution output by feed pipe 7, as well as the liquid working medium formed after distillation in first and second packing layers 4 and 6, flows downward under the influence of gravity to first baffle 14, passes through first through-hole 15, and enters third packing layer 202 for further gas-liquid separation. The separated liquid working medium continues to flow downward, passes through the fourth through-hole in fourth baffle 19, enters liquid storage chamber 2, and finally flows out through liquid outlet pipe 8.

[0049] Furthermore, in one embodiment, Figure 2 As shown, a second baffle 16 is disposed between the primary separation chamber 3 and the first packing layer 4. The second baffle 16 is provided with a plurality of second through-holes 17. The density of the plurality of first through-holes 15 is less than the density of the plurality of second through-holes 17. In other words, the upper and lower baffles of the primary separation chamber 3 form a pattern of dense openings at the top and sparse openings at the bottom, making it easier for the gas working medium to flow upward and less likely to flow downward, thereby facilitating gas-liquid separation and achieving more thorough gas-liquid separation.

[0050] In addition, a fifth baffle 20 is provided between the secondary separation chamber 5 and the first filling layer 4, and is provided with a plurality of fifth through-holes. A sixth baffle 21 is provided between the secondary separation chamber 5 and the second filling layer 6, and is provided with a plurality of sixth through-holes. A third baffle 22 is provided between the second filling layer 6 and the gas storage chamber 12, and is provided with a plurality of third through-holes. Each baffle and each through-hole can better collect and store the mixed or separated gas / liquid working medium within the rectifier. The through-holes can be conventional structures such as circular holes and strip holes.

[0051] Furthermore, if Figure 2 As shown, the density of the first through holes 15 and the fourth through holes is smaller than the density of the second through holes 17 , the fifth through holes, the sixth through holes and the third through holes, so as to further improve the gas-liquid separation effect.

[0052] It should be noted that the embodiment of the present invention does not limit the structures of the first filling layer 4 , the second filling layer 6 and the third filling layer 202 , and any existing structure can be adopted as needed.

[0053] In one embodiment, the first filling layer 4, the second filling layer 6, and the third filling layer 202 are all filled with regularly and / or irregularly shaped filling bodies 18. The regularly shaped filling bodies 18 include at least one of a triangular spiral, a spherical, and a toroidal shape. During the upward movement, the liquid working medium in the bubble liquid state is affected by the resistance of the filling body 18 and cannot continue to move upward. A liquid film gradually forms on the surface of the filling body 18. The liquid film, under the influence of tension, aggregates the liquid working medium and flows downward.

[0054] For example, Figures 3 to 6 As shown, the filling body 18 adopts a triangular spiral shape. The first filling layer 4, the second filling layer 6 and the third filling layer 202 are all irregularly filled with the filling body 18, and are tightly filled to ensure the effect of gas-liquid separation. Taking the first filling layer 4 as an example, the filling form of the triangular spiral filling body 18 is as follows Figure 6 shown.

[0055] In one embodiment, one end of the feed pipe 7 is connected to the primary separation chamber 3 by passing through the liquid storage chamber 2, and the outlet faces upward so that the gas medium can flow upward smoothly, which is beneficial to further improve the gas-liquid separation effect.

[0056] The working principle of the rectifier of the utility model embodiment is as follows:

[0057] When the liquid level sensor 11 detects that the liquid level in the liquid storage chamber 2 rises to a preset high liquid level, the controller controls the switch valve 10 to close.

[0058] Feed pipe 7 feeds the gas-liquid two-phase solution into the primary separation chamber 3, where the gaseous working medium and some of the liquid working medium in the bubbling liquid state ascend into the first packing layer 4. During its upward movement, the majority of the liquid working medium in the bubbling liquid state is hindered by the resistance of the first packing layer 4 and gradually forms a liquid film in the first packing layer 4. The liquid film, under the influence of tension, aggregates to form the liquid working medium. Once a sufficient amount of liquid working medium accumulates, it overcomes the upward pressure and flows downward under the influence of gravity into the primary separation chamber 3, where it merges with the liquid working medium in the gas-liquid two-phase solution discharged from feed pipe 7.

[0059] The gas working substance and the liquid working substance in the bubble-liquid state can directly pass through the first filling layer 4 and continue to enter the secondary separation cavity 5 upward, and then enter the second filling layer 6. The gas working substance can directly pass through the second filling layer 6 and continue to enter the gas storage cavity 12 upward for storage and be discharged through the gas outlet pipe 13. The liquid working substance in the bubble-liquid state cannot continue to go upward in the process of going upward due to the influence of the resistance of the second filling layer 6, and gradually forms a liquid film in the second filling layer 6, and the liquid film is gathered to form the liquid working substance under the influence of tension. After the liquid working substance is gathered to a certain amount, the liquid working substance can overcome the gas pressure of going upward and flow downward to the first filling layer 4 under the influence of gravity, and enter the primary separation cavity 3 after passing through the first filling layer 4.

[0060] The liquid working substance in the gas-liquid two-phase body input by the feed pipe 7 and the liquid working substance entering the primary separation cavity 3 after rectification through the first filling layer 4 and the second filling layer 6 flow downward to the first baffle 14 under the influence of gravity. After passing through the first through hole 15 of the first baffle 14, the liquid working substance enters the third filling layer 202 for further gas-liquid separation. After the liquid working substance continues to flow downward, the liquid working substance enters the liquid storage cavity 2 for collection after passing through the fourth through hole of the fourth baffle 19, and finally flows out through the liquid outlet pipe 8.

[0061] Since the gas inlet pressure of the gas-liquid two-phase body input by the feed pipe 7 is maintained unchanged. The gas-liquid separation needs to pass through three filling layers, the exhaust efficiency is reduced, so that the gas pressure of the liquid storage cavity 2 is increased, thereby increasing the liquid discharge speed of the liquid storage cavity 2 to reduce the liquid level height.

[0062] When the liquid level sensor 11 detects that the liquid level height in the liquid storage cavity 2 is reduced to a preset low liquid level, the controller opens the switch valve 10. Part of the gas-liquid two-phase body in the primary separation cavity 3 directly enters the secondary separation cavity 5 through the bypass pipe 9, and the gas working substance can be quickly discharged, thereby improving the exhaust efficiency, reducing the gas pressure of the liquid storage cavity 2, and reducing the liquid discharge speed of the liquid storage cavity 2, thereby increasing the liquid storage amount in the liquid storage cavity 2 and increasing the liquid level height. The working process of the gas-liquid two-phase body entering the secondary separation cavity 5 is consistent with the process in the first separation state, and the embodiment of the utility model is not repeated.

[0063] The flow direction of the gas working substance is indicated by the solid arrow in Figure 1 , and the flow direction of the liquid working substance is indicated by the hollow arrow in Figure 1 .

[0064] According to the embodiment of the utility model, on the other hand, a heat pump system is also provided, which comprises a compressor, a condenser and a rectifier.

[0065] Specifically, the outlet of the compressor is connected with the condenser, and the refrigerant outlet of the condenser is connected with the feed pipe 7 of the rectifier.

[0066] The embodiment of the utility model has a heat pump system with the rectifier. By controlling the opening and closing of the switch valve 10, the liquid level height of the liquid storage chamber 2 can be maintained within a certain range, ensuring that the liquid storage chamber 2 is always in a liquid-sealed state, with a good gas-liquid separation effect, and can also ensure that there is sufficient refrigerant to participate in the heating cycle of the heat pump system to ensure the heating efficiency of the heat pump system.

[0067] 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.

[0068] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A rectifier for a heat pump system, characterized in that: include: A separator body (1) is provided with a liquid storage chamber (2), a primary separation chamber (3), a first filling layer (4), a secondary separation chamber (5) and a second filling layer (6) which are sequentially connected from bottom to top; the primary separation chamber (3) is connected to a feed pipe (7); the liquid storage chamber (2) is connected to a liquid outlet pipe (8); the primary separation chamber (3) is connected to the secondary separation chamber (5) via a bypass pipe (9); and a switch valve (10) is provided on the bypass pipe (9).

2. The rectifier according to claim 1, characterized in that: The invention also includes a controller and a liquid level sensor (11). The liquid level sensor (11) is arranged in the liquid storage chamber (2) and is used to detect the liquid level height in the liquid storage chamber (2). The controller is electrically connected to the switch valve (10) and the liquid level sensor (11) respectively. The controller is used to control the switch valve (10) to open or close according to the liquid level height detected by the liquid level sensor (11).

3. The rectifier according to claim 1, characterized in that: It also includes an air storage cavity (12), the second filling layer (6) is arranged between the secondary separation cavity (5) and the air storage cavity (12), and the top of the separator body (1) is provided with an air outlet pipe (13) connected to the air storage cavity (12).

4. The rectifier according to any one of claims 1 to 3, characterized in that: The liquid storage chamber (2) is provided with a liquid storage space (201) and a third filling layer (202) located at the upper end of the liquid storage space (201); a first baffle (14) is provided between the third filling layer (202) and the primary separation chamber (3); and a plurality of first through holes (15) are provided on the first baffle (14).

5. The rectifier according to claim 4, characterized in that: A second baffle (16) is provided between the primary separation chamber (3) and the first filling layer (4); the second baffle (16) is provided with a plurality of second through holes (17); and the opening density of the plurality of first through holes (15) is less than the opening density of the plurality of second through holes (17).

6. The rectifier according to claim 4, characterized in that: A plurality of the first through holes (15) are arranged at intervals on the edge of the first baffle (14).

7. The rectifier according to claim 4, characterized in that: The first filling layer (4), the second filling layer (6), and the third filling layer (202) are all filled with filling bodies (18) of regular shape and / or irregular shape.

8. The rectifier according to claim 7, characterized in that: The regular shape includes at least one of a triangular spiral shape, a spherical shape, and a ring shape.

9. The rectifier according to claim 4, characterized in that: One end of the feed pipe (7) is connected to the primary separation chamber (3) by passing through the liquid storage chamber (2), and the outlet faces upward.

10. A heat pump system, characterized in that: A rectifier comprising the rectifier according to any one of claims 1 to 9.

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