A pressure pulsation elimination device, elimination system and air conditioner

Abstract

The present invention discloses a pressure pulsation elimination device, elimination system and air conditioner, the pressure pulsation elimination device comprises a body, a fluid channel and a tray assembly, the body is provided with a accommodating cavity inside; the fluid channel is connected with the accommodating cavity and cooperates with the accommodating cavity to connect the upstream side and the downstream side of the body; the tray assembly is arranged in the accommodating cavity, and the tray assembly is configured to be switchable between open and closed; wherein, when the tray assembly is closed, the fluid channel is blocked by the tray assembly; when the tray assembly is opened, the fluid channel is conducted, and the opening formed when the tray assembly is opened is the conducting port of the fluid channel. The pressure pulsation elimination device provided by the present invention can form different pressure drops to adapt to pressure pulsations of different frequencies, thereby achieving effective elimination of pressure pulsations of multiple frequencies.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to a pressure pulsation eliminating device, an eliminating system and an air conditioner. Background Art

[0002] During the operation of the air conditioner, the cylinder of the reciprocating compressor will intermittently inhale and exhaust air, causing the flow rate and pressure of the compressed refrigerant to change periodically, thus forming pressure pulsation. Therefore, when the refrigerant is transmitted to the evaporator or condenser through the copper pipe, there will also be pressure pulsation in the copper pipe. If the pressure pulsation is not effectively eliminated, it will not only generate transmission noise, but also aggravate the vibration of the pipe and increase the risk of pipe rupture.

[0003] In the prior art, most air conditioners generally use a silencer in series on the pipeline to weaken the pressure pulsation, but the silencer characteristics of the silencer are affected by its expansion ratio and the length of the cylinder. Once the size of the silencer is determined, its silencer frequency will no longer change. If the frequency of the pressure pulsation changes at this time or there is pressure pulsation of other frequencies, the pressure pulsation cannot be effectively eliminated, posing a safety hazard. Summary of the invention

[0004] The main purpose of the present invention is to provide a pressure pulsation eliminating device, aiming to solve the technical problem in the prior art that the air conditioner cannot eliminate pressure pulsations of different frequencies.

[0005] To achieve the above object, the present invention provides a pressure pulsation elimination device, comprising:

[0006] A main body, wherein a receiving cavity is provided inside the main body;

[0007] A fluid channel, the fluid channel is communicated with the accommodating cavity and cooperates with the accommodating cavity to communicate with the upstream side and the downstream side of the body;

[0008] A tray assembly is disposed in the accommodating cavity, and the tray assembly is configured to be switchable between opening and closing so that the fluid channel is switched between being open and being blocked; wherein

[0009] When the tray assembly is closed, the fluid passage is blocked by the tray assembly;

[0010] When the tray assembly is opened, the fluid channel is connected, and the opening formed when the tray assembly is opened is the connecting port of the fluid channel.

[0011] In some embodiments of the present application, the tray assembly includes:

[0012] A pallet, wherein the pallet is formed by splicing a plurality of pallet blocks;

[0013] A driving member is connected to the tray block and is used to drive the tray block to move away from or toward the center of the tray so as to open or close the tray assembly.

[0014] In some embodiments of the present application, the driving member includes:

[0015] A magnetic part connected to the tray block, wherein the magnetic part is arranged at an end of the tray block away from the center of the tray;

[0016] A telescopic part, one end of which is connected to the magnetic part, and one end of which is away from the magnetic part is connected to an electromagnetic suction part; wherein

[0017] The electromagnetic attraction portion is configured to have magnetism when powered on, and is used to attract or repel the magnetic portion.

[0018] In some embodiments of the present application, the tray is a disc structure, and the disc structure is formed by splicing four fan-shaped tray blocks of the same size and shape.

[0019] In some embodiments of the present application, the fluid channel includes a first fluid hole arranged on the upstream side and a second fluid hole arranged on the downstream side;

[0020] The accommodating chamber is disposed between the first fluid hole and the second fluid hole.

[0021] In some embodiments of the present application, a sink is provided on the upstream side, and the first fluid hole is provided on the sink.

[0022] In some embodiments of the present application, there are multiple first fluid holes; and / or

[0023] The number of the second fluid hole is one.

[0024] The present invention also proposes a pressure pulsation elimination system, comprising:

[0025] The pressure pulsation elimination device mentioned above;

[0026] a first pipe section, the first pipe section being connected to the flow-incoming side so that the fluid in the first pipe section can flow into the fluid channel;

[0027] A second pipe section and a muffler connected to the second pipe section, wherein one end of the second pipe section away from the muffler is connected to a back-stream side, so that the fluid entering the body can flow from the fluid channel to the muffler.

[0028] In some embodiments of the present application, the pressure pulsation elimination system further includes:

[0029] A controller, the controller is electrically connected to the electromagnetic suction part, and the controller is used to control the magnitude and direction of the current flowing through the electromagnetic suction part to adjust the magnetism of the electromagnetic suction part;

[0030] A flow rate detection sensor is arranged at one end of the first pipe section away from the main body and is electrically connected to the controller. The flow rate detection sensor is used to monitor the flow rate of the fluid entering the first pipe section and feed back to the controller.

[0031] The present invention also provides an air conditioner, comprising the above-mentioned pressure pulsation eliminating device.

[0032] The present invention provides a pressure pulsation eliminating device, which arranges a tray assembly that can be switched between an open state and a closed state in a accommodating cavity, so that the opening formed when the tray assembly is opened is a conducting port of a fluid channel, that is, the size of the conducting port of the fluid channel is positively correlated with the size of the opening when the tray assembly is opened, that is, the larger the opening of the tray assembly, the larger the conducting port of the fluid channel, and the size of the conducting port of the fluid channel can be controlled by adjusting the opening size of the tray assembly; further, the flow rate of the fluid in the fluid channel can be adjusted by adjusting the size of the conducting port of the fluid channel, so that a pressure drop is formed before and after the fluid enters the fluid channel, so that different pressure drops can be formed by adjusting the size of the conducting port of the fluid channel to adapt to pressure pulsations of different frequencies, thereby achieving effective elimination of pressure pulsations of multiple frequencies. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 This is a schematic structural diagram (cross-sectional view) of a pressure pulsation elimination device according to an embodiment of the present invention;

[0035] Figure 2 This is a schematic structural diagram of a tray assembly of a pressure pulsation elimination device according to an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the external structure of a pressure pulsation elimination device according to an embodiment of the present invention (side top view);

[0037] Figure 4 This is a schematic diagram of the external structure of a pressure pulsation elimination device according to an embodiment of the present invention (side view from above);

[0038] Figure 5This is a schematic diagram of the structure of a pressure pulsation elimination system according to an embodiment of the present invention (without a muffler);

[0039] Figure 6 A schematic diagram of the structure of a pressure pulsation elimination system according to an embodiment of the present invention (including a muffler)

[0040] Figure 7 This is a schematic diagram of the connection relationship between the controller, the electromagnetic suction part and the flow rate detection sensor according to an embodiment of the present invention;

[0041] Figure 8 This is a schematic structural diagram of a tray assembly in a closed state according to an embodiment of the present invention;

[0042] Fig. 9 This is a schematic structural diagram of a tray assembly in an open state according to an embodiment of the present invention.

[0043] Figure numerals: 100, main body; 101, upstream side; 102, downstream side; 103, trough; 200, accommodating chamber; 300, fluid channel; 301, first fluid hole; 302, second fluid hole; 400, tray assembly; 401, tray; 401-1, tray block; 402, magnetic part; 403, telescopic part; 404, electromagnetic suction part; 500, first pipe section; 600, second pipe section; 700, muffler. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] like Figure 1-Figure 9 As shown, the present invention provides a pressure pulsation eliminating device, including a main body 100, a fluid channel 300 and a tray assembly 400, wherein a accommodating cavity 200 is opened inside the main body 100, and the fluid channel 300 is connected with the accommodating cavity 200 and cooperates with the accommodating cavity 200 to connect the upstream side 101 and the downstream side 102 of the main body 100; wherein, when the tray assembly 400 is closed, the fluid channel 300 is blocked by the tray assembly 400; when the tray assembly 400 is opened, the fluid channel 300 is conducted, and the opening formed when the tray assembly 400 is opened is the conducting port of the fluid channel 300.

[0049] It should be noted that: "the opening formed when the tray assembly 400 is opened is the conduction opening of the fluid channel 300", that is, the size of the conduction opening of the fluid channel 300 is positively correlated with the size of the opening when the tray assembly 400 is opened. The larger the opening opened by the tray assembly 400, the larger the conduction opening of the fluid channel 300, and the smaller the opening opened by the tray assembly 400, the smaller the conduction opening of the fluid channel 300, that is, the larger the conduction area of ​​the fluid channel 300; more specifically, the conduction area of ​​the fluid channel 300 is positively correlated with the area of ​​the opening when the tray assembly 400 is opened; that is, the conduction area of ​​the fluid channel 300 increases as the area of ​​the open opening of the tray assembly 400 increases, and the conduction area of ​​the fluid channel 300 decreases as the area of ​​the open opening of the tray assembly 400 decreases; that is, the opening and closing of the tray assembly 400 substantially controls the conduction state of the fluid channel 300.

[0050] The flow direction of the fluid in the fluid channel 300 is the same as the thickness direction of the accommodating cavity 200 , that is, the fluid in the fluid channel 300 first passes through the upstream side 101 and then passes through the accommodating cavity 200 before flowing out from the downstream side 102 .

[0051] It can be understood that: according to the calculation formula of flow rate and flow rate: Q=S×V (Q equals flow rate as a constant, S is the conduction area, and V is flow rate), technicians in this field adjust the conduction area of ​​the fluid channel 300 by changing the state of the tray assembly 400 (open or closed), and further regulate the flow rate of the fluid through the fluid channel 300, so that the fluid forms a pressure drop before and after entering the fluid channel 300, thereby forming different pressure drops by adjusting the conduction area of ​​the fluid channel 300 to adapt to pressure pulsations of different frequencies, thereby effectively eliminating pressure pulsations of multiple frequencies.

[0052] Based on the above technical solution, the technical personnel in this field can further adopt an implementation method in which the main body 100 adopts a cylindrical structure to connect with the pipeline in the air-conditioning equipment; similarly, the accommodating cavity 200 arranged inside the main body 100 is matched and set to a cylindrical structure.

[0053] Based on the above technical solution, the technical personnel in this field can further adopt an implementation method as follows: the tray assembly 400 includes a tray 401 and a driving member, and the tray 401 is formed by splicing multiple tray blocks 401-1. Each tray block 401-1 is connected to a driving member, and the driving member drives the tray block 401-1 to move away from or toward the center of the tray 401 to open or close the tray 401.

[0054] It should be noted that: when the tray 401 is in a closed state, the multiple tray blocks 401-1 that make up the tray 401 are in a spliced ​​state, and the driving member drives the tray block 401-1 to move away from the center of the tray 401, so that the tray 401 is changed to an open state. Within the range that the driving member can drive, the farther the tray block 401 is away from the center of the tray 401, the larger the opening of the tray 401; it can be understood that when the tray 401 is in an open state, a single tray block 401-1 can move away from the center of the tray 401, or multiple tray blocks 401-1 can move away from the center of the tray 401 at the same time.

[0055] The thickness of the tray 401 is the same as that of the accommodating cavity 200 or is slightly smaller than that of the accommodating cavity 200 , so that the tray 401 can slide in the accommodating cavity 200 , thereby realizing the opening and closing of the tray 401 .

[0056] The tray 401 is arranged at the center of the accommodating cavity 200, and the fluid channel 300 is arranged at the center of the accommodating cavity 200, and the area of ​​the surface where the tray 401 contacts the fluid channel 300 is larger than the maximum area of ​​the fluid channel 300, so that the fluid channel 300 can be blocked when the tray 401 is in a closed state, that is, the central axis of the tray 401, the central axis of the fluid channel 300 and the central axis of the accommodating cavity 200 coincide with each other.

[0057] Based on the above technical solution, a person skilled in the art may further adopt an implementation method, in which the driving member includes a magnetic part 402, a telescopic part 403 and an electromagnetic suction part 404, the magnetic part 402 is connected to the tray block 401-1 and is arranged at the end of the tray block 401-1 away from the center of the tray 401, one end of the telescopic part 403 is connected to the magnetic part 402, and the end of the telescopic part 403 away from the magnetic part 402 is connected to the electromagnetic suction part 404; the electromagnetic suction part 404 is configured to have magnetism when powered on, and is used to attract or repel the magnetic part 402.

[0058] It should be noted that the electromagnetic suction part 404 is configured to have magnetism when powered on, and the size and direction of the magnetism of the electromagnetic suction part 404 depend on the direction and size of the current passing through the electromagnetic suction part 404. When the driving member is required to drive the tray block 401-1 to move away from the center of the tray 401, the direction of the current passing through the electromagnetic suction part 404 is controlled to make the magnetism of the electromagnetic suction part 404 different from the magnetism of the magnetic part 402, so that the electromagnetic suction part 404 and the magnetic part 402 are attracted to each other, so that the tray block 401-1 moves away from the center of the tray 401, and the tray 401 is turned from a closed state to an open state or the opening of the open state is increased; wherein, further controlling the size of the current in the electromagnetic suction part 404 can control the size of the magnetism of the electromagnetic suction part 404, and then control the size of the opening of the tray 401. When the size of the opening of the tray 401 reaches a preset position, the electromagnetic suction part 404 is stopped from being energized, so that the tray block 401-1 is fixed at this position.

[0059] When the tray 401 needs to be changed from an open state to a closed state, the current passing through the electromagnetic suction part 404 is opposite to the direction of the current in its open state, so that the magnetism of the electromagnetic suction part 404 is the same as the magnetism of the magnetic part 402, so that the electromagnetic suction part 404 and the magnetic part 402 repel each other, driving the tray block 401-1 to move toward the center of the tray 401, that is, the center of the accommodating cavity 200, to realize the transformation of the tray 401 from an open state to a closed state.

[0060] As a further implementation of the above technical solution, the magnetic part 402 is made of a magnet. At the same time, in order to ensure that the tray 401 can be opened and closed reasonably, the magnetic properties of the magnetic parts 402 arranged on the multiple tray blocks 401-1 are the same, so that when current is passed through different electromagnetic suction parts 404, a circuit can be shared to save the material cost and control cost of the structure.

[0061] As a further implementation of the above technical solution, each of the multiple trays 401 is matched with an electromagnetic suction part 404, and the multiple electromagnetic suction parts 404 can share a control circuit or be connected to different control circuits. When the multiple electromagnetic suction parts 404 are connected to different control circuits, one or more of the multiple tray blocks 401-1 can be driven to move individually, so as to realize more fluid channels 300 with different conduction areas.

[0062] As a further implementation of the above technical solution, the tray block 401-1 is made of a non-magnetic material, such as plastic, silicone or other non-magnetic metal alloys, to avoid the tray block 401-1 being magnetic and affecting the driving effect of the driving part; at the same time, in order to ensure the driving effect, the tray block 401-1 needs to be made of a lightweight material so that a smaller driving force can drive the tray block 401-1 to move.

[0063] As a further implementation of the above technical solution, the telescopic part 403 is an elastic member, and the elastic member is also made of non-magnetic material. Specifically, the elastic member can be a plastic spring.

[0064] As a further implementation of the above technical solution, the tray 401 is a disc structure, which is formed by splicing four fan-shaped tray blocks 401-1 of the same size and shape, that is, the four fan-shaped tray blocks 401-1 together constitute a complete circular tray 401; specifically, the four fan-shaped trays 401 of the same size and shape are arranged opposite to each other, and the tapered ends of the four fan-shaped trays 401 are connected toward the center of the accommodating cavity 200 to form the center of the tray 401.

[0065] Furthermore, the magnetic portion 402 disposed at one end of the sector-shaped tray block 401 - 1 away from the center of the tray 401 is an arc-shaped magnet matching the side of the sector-shaped tray 401 .

[0066] Based on the above technical solution, a person skilled in the art may further adopt an implementation mode in which the fluid channel 300 includes a first fluid hole 301 arranged on the upstream side 101 and a second fluid hole 302 arranged on the downstream side 102 , and the accommodating chamber 200 is arranged between the first fluid hole 301 and the second fluid hole 302 .

[0067] It can be understood that: the fluid channel 300 includes a two-section structure, the first section structure is a first fluid hole 301 arranged between the upstream side 101 and the accommodating chamber 200, and the second section structure is a second fluid hole 302 arranged between the accommodating chamber 200 and the downstream side 102, wherein the first fluid hole 301 and the second fluid hole 302 are respectively arranged on both sides of the accommodating chamber 200 and are respectively connected to the upstream side 101 and the downstream side 102, so that the fluid channel 300 cooperates with the accommodating chamber 200 to form a fluid flow path that runs through the main body 100.

[0068] Based on the above technical solution, a further implementation method that can be adopted by those skilled in the art is that a sink 103 is provided on the upstream side 101 , and the first fluid hole 301 is provided on the sink 103 .

[0069] It can be understood that: the groove 103 is set on the upstream side 101 to facilitate the external pipeline to be directly matched and set in the groove 103, thereby improving the docking efficiency, and the side of the groove 103 will form a certain limit on the external pipeline, thereby improving the stability of the connection.

[0070] Based on the above technical solution, a further implementation method that can be adopted by those skilled in the art is that there are multiple first fluid holes 301 and one second fluid hole 302 .

[0071] It should be noted that: when there are multiple first fluid holes 301 arranged on the upstream side 101, their diameters are relatively small. When the external pipeline flows through, the fluid can be divided into multiple flow paths, and then the fluid in the external pipeline is diverted, thereby generating a pressure drop, further alleviating the pressure pulsation of the fluid, and at the same time, the number of through holes on the upstream side 101 can be adjusted by opening and closing the tray assembly 400, thereby generating pressure drops of different degrees to adapt to pressure pulsations of different frequencies, thereby matching the pressure pulsations of corresponding frequencies with the corresponding pressure drops.

[0072] The number of the second fluid holes 302 disposed on the back-stream side 102 is one, so as to facilitate the fluid to quickly flow out of the accommodating cavity 200 .

[0073] Specifically, the diameter of the first fluid hole 301 is 2-3 mm, and the diameter of the second fluid hole 302 is 7-15 mm.

[0074] As another alternative implementation of the above technical solution, there is one first fluid hole 301 and one second fluid hole 302; in this case, the diameter of the first fluid hole 301 is 4-6 mm; the diameter of the second fluid hole 302 is 7-15 mm.

[0075] It should be noted that when the tray 401 is in a closed state, it can completely block the first fluid hole 301 and the second fluid hole 302 .

[0076] The present invention also provides a pressure pulsation elimination system, such as Figure 7As shown, it includes the above-mentioned pressure pulsation eliminating device, the first pipe segment 500, the second pipe segment 600 and the muffler 700. The first pipe segment 500, the pressure pulsation eliminating device, the second pipe segment 600 and the muffler 700 are connected in sequence, that is, the outlet end of the first pipe segment 500 is connected to the fluid channel 300 on the upstream side 101 so that the fluid in the first pipe segment 500 can flow into the fluid channel 300, the inlet end of the second pipe segment 600 is connected to the fluid channel 300 on the downstream side 102, and the outlet end of the second pipe segment 600 is connected to the muffler 700 so that the fluid entering the body 100 can flow from the fluid channel 300 to the muffler 700.

[0077] It should be noted that the inlet end of the first pipe section 500 is connected to the discharge port of the air conditioner compressor, so that the fluid in the compressor enters the pressure pulsation elimination device through the first pipe section 500, thereby eliminating the pressure pulsation generated by the compressor.

[0078] It can be understood that: connecting the muffler 700 after the pressure pulsation elimination device can further effectively eliminate the pressure pulsation generated, thereby improving the effect of eliminating pressure pulsations of multiple frequencies of the fluid.

[0079] Based on the above technical solution, a further implementation method that can be adopted by technicians in this field is that the pressure pulsation elimination system also includes a controller and a flow rate detection sensor. The controller is electrically connected to the electromagnetic suction part 404, and the controller is used to control the magnitude and direction of the current when the electromagnetic suction part 404 is powered on to adjust the magnetism of the electromagnetic suction part 404; the flow rate detection sensor is arranged at one end of the first pipe section 500 away from the main body 100 and is electrically connected to the controller, and the flow rate detection sensor is used to monitor the flow rate of the fluid entering the first pipe section 500 and feed back to the controller.

[0080] It can be understood that: the flow rate detection sensor arranged at the inlet end of the first pipe segment 500 detects the fluid flow rate and feeds back to the controller, and the controller receives the flow rate information of the fluid in the first pipe segment 500 fed back by the flow rate detection sensor, and controls the current size and direction passing through the electromagnetic suction part 404 according to the flow rate of the first pipe segment 500, thereby adjusting the opening size of the tray 401 to achieve real-time effective elimination of pressure pulsations of different frequencies.

[0081] The present invention also provides an air conditioner, including the above-mentioned pressure pulsation eliminating device. Since the air conditioner adopts part or all of the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0082] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A pressure pulsation elimination device, characterized in that: include: A main body (100), wherein a receiving cavity (200) is provided inside the main body (100); a fluid channel (300), the fluid channel (300) being in communication with the accommodating chamber (200) and cooperating with the accommodating chamber (200) to be in communication with the upstream side (101) and the downstream side (102) of the body (100); A tray assembly (400), the tray assembly (400) being disposed in the accommodating cavity (200), the tray assembly (400) being configured to be switchable between opening and closing, so that the fluid channel is switched between being open and being blocked; in When the tray assembly (400) is closed, the fluid channel (300) is blocked by the tray assembly (400); When the tray assembly (400) is opened, the fluid channel (300) is connected, and the opening formed when the tray assembly (400) is opened is the connecting port of the fluid channel; The tray assembly (400) comprises a tray (401) and a driving member, wherein the tray (401) is formed by splicing a plurality of tray blocks (401-1); The driving member comprises a telescopic part (403) and a magnetic part (402) connected to the tray block (401-1), the magnetic part (402) being arranged at an end of the tray block away from the center of the tray, one end of the telescopic part (403) being connected to the magnetic part (402), and one end of the telescopic part (403) away from the magnetic part (402) being connected to an electromagnetic suction part (404); The electromagnetic attraction portion (404) is configured to have magnetism when powered on, and is used to attract or repel the magnetic portion (402).

2. A pressure pulsation elimination device according to claim 1, characterized in that: The tray (401) is a disc structure, and the disc structure is formed by splicing four fan-shaped tray blocks (401-1) of the same size and shape.

3. A pressure pulsation elimination device according to claim 1, characterized in that: The fluid channel (300) comprises a first fluid hole (301) arranged on the upstream side (101) and a second fluid hole (302) arranged on the downstream side (102); The accommodating chamber (200) is arranged between the first fluid hole (301) and the second fluid hole (302).

4. A pressure pulsation elimination device according to claim 3, characterized in that: The upstream side (101) is provided with a sink (103), and the first fluid hole (301) is provided on the sink (103).

5. The pressure pulsation elimination device according to claim 3, characterized in that: The first fluid holes (301) are multiple; and / or The number of the second fluid hole (302) is one.

6. A pressure pulsation elimination system, characterized in that: include: The pressure pulsation elimination device according to any one of claims 1 to 5; A first pipe section (500), the first pipe section (500) being connected to the flow-incoming side (101) so that the fluid in the first pipe section (500) can flow into the fluid channel (300); A second pipe section (600) and a muffler (700) connected to the second pipe section (600), wherein one end of the second pipe section (600) away from the muffler (700) is connected to the back flow side (102) so that the fluid entering the body (100) can flow from the fluid channel (300) to the muffler (700).

7. A pressure pulsation elimination system according to claim 6, characterized in that: The pressure pulsation elimination system also includes: A controller, the controller being electrically connected to the electromagnetic suction part (404), the controller being used to control the magnitude and direction of the current flowing through the electromagnetic suction part (404) so ​​as to adjust the magnetism of the electromagnetic suction part (404); A flow rate detection sensor is arranged at one end of the first pipe section (500) away from the main body (100) and is electrically connected to the controller. The flow rate detection sensor is used to monitor the flow rate of the fluid entering the first pipe section (500) and feed back to the controller.

8. An air conditioner, characterized in that: A pressure pulsation eliminating device comprising the pressure pulsation eliminating device according to any one of claims 1 to 5.

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