Vibration reduction structure and vibration reduction method of air source heat pump compressor

Abstract

The invention relates to the technical field of vibration reduction of air source heat pump compressors, and discloses a vibration reduction structure of an air source heat pump compressor, which comprises a rubber foot pad, the bottom of the rubber foot pad is connected with a bottom plate, the bottom plate is fixedly connected with a screw rod, the screw rod is internally provided with an air guide assembly, the top of the air guide assembly is connected with a stop valve, and the stop valve is fixedly connected with the rubber foot pad. Compressor bottom feet are placed on the tops of the rubber foot pads. The screw rod is mounted in the rubber foot pad, the air guide assembly is arranged in the screw rod, and through cooperation with the supporting assembly, the supporting block can move outwards after high-pressure air is injected into the stop valve, so that the supporting block and the screw rod can achieve the supporting effect on the compressor foot; and the problem that the compressor shakes greatly due to the elasticity of the rubber foot pad at the bottom in the transportation process is avoided, so that the rubber vibration reduction foot pad at the bottom of the compressor does not need to consider the transportation condition, and the vibration reduction efficiency of the rubber vibration reduction foot pad in the working process of the compressor can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction technology for air source heat pump compressors, specifically to a vibration reduction structure and method for an air source heat pump compressor. Background Technology

[0002] With the improvement of living standards, users have put forward higher requirements for the noise of heat pump units. The main source of noise in air source heat pump units is the compressor. Therefore, the vibration reduction and noise reduction of the compressor is particularly important. At present, the common solution is that the compressor manufacturer provides rubber vibration damping pads. Due to considerations such as transportation and start-up conditions, the rubber vibration damping pads provided by the compressor manufacturer are not too soft, resulting in a low vibration isolation rate. During the operation of the unit, the vibration of the compressor will be transmitted to the casing to a certain extent, thus bringing low-frequency noise to the whole unit. Therefore, a compressor vibration isolation solution that balances high vibration isolation rate and transportation requirements is crucial for the overall noise reduction of air source heat pump units.

[0003] Patent CN110645163B discloses a vibration damping component to reduce the vibration amplitude of a compressor. The component includes vibration damping pads and a pressure cap. Under the action of external force, the pressure cap applies a pre-tightening force to the vibration damping pads, causing the mounting groove to undergo elastic deformation, thereby clamping and fixing the compressor fixing part in the mounting groove, making it more stable and reducing the vibration amplitude of the compressor when the air conditioner experiences strong and large-amplitude vibrations. However, this method will inevitably reduce the vibration isolation rate of the vibration damping pads, increasing the vibration transmitted to the casing and thus increasing the noise of the entire unit.

[0004] Patent CN114251744B discloses a vibration damping device and an outdoor air conditioning unit, including a base plate, a screw assembly, and vibration damping pads. The base plate has a through hole, and the vibration damping pads are fitted onto the screw assembly. The screw assembly is inserted into the through hole and connected to the base plate. The screw assembly has two fixed positions along the circumference of the through hole. When the screw assembly is fixed in the first fixed position, the fastener is in contact with the vibration damping pads; when the screw assembly is fixed in the second fixed position, the fastener and the vibration damping pads are spaced apart. This method requires access to the base plate for operation, which is difficult to implement when installing larger units.

[0005] Patent CN114183326A proposes a vibration damping device for a compressor. This device includes three vibration damping structures, each with at least three sets, distributed at intervals along the circumference of the compressor. Each structure requires driving gas to drive it. It can reduce compressor vibration under complex operating conditions. Although this structure provides multi-directional compressor vibration suppression, it is very complex, costly, and not very usable.

[0006] Based on the above patents, it can be seen that current patents, which take into account both compressor vibration and transportation, are either structurally complex and costly, not easy to operate, or have poor effects. Therefore, there is a need to propose a vibration reduction structure that can take into account vibration isolation performance, is easy to operate, and has a low cost. Summary of the Invention

[0007] This invention aims to solve the problem of conflicting vibration damping structures for compressors in air conditioning products during normal use and transportation. During normal use, the vibration damping structure should be as soft as possible to achieve good vibration isolation, while during transportation, the vibration damping structure needs to have greater rigidity to reduce compressor shaking and prevent copper pipe breakage. This invention proposes a vibration damping structure that can balance both aspects and is simple to operate and has a low cost.

[0008] This invention provides the following technical solution: a vibration damping structure for an air source heat pump compressor, comprising rubber feet, a base plate connected to the bottom of the rubber feet, a screw fixedly connected to the base plate, an air guide assembly disposed inside the screw, a shut-off valve connected to the top of the air guide assembly, a compressor foot placed on the top of the rubber feet, and the compressor foot sleeved on the outside of the screw, an clearance hole provided at the contact position between the top of the rubber feet and the compressor foot, and the clearance hole being located on the outside of the screw, and a support assembly installed inside the screw at the bottom of the air guide assembly, the support assembly including a support block, and after the shut-off valve injects gas into the air guide assembly, the support block can move outward and partially enter the clearance hole.

[0009] Furthermore, the air guiding assembly includes an air guiding tube, an umbrella-shaped nut, a sealing washer, and an air guiding hole. The air guiding hole is opened inside the screw, and the top of the air guiding hole communicates with the air guiding tube. The umbrella-shaped nut is sleeved on the bottom of the air guiding tube and is threaded to the outside of the top of the screw. The sealing washer is located between the screw and the air guiding tube.

[0010] Furthermore, the bottom of the air duct is connected to an umbrella-shaped flare, which is fitted inside the umbrella-shaped nut, and the outer edge of the umbrella-shaped flare contacts the sealing gasket.

[0011] Furthermore, the support assembly also includes a sealing ring, a stop block, and a telescopic spring. The sealing ring is located on the outside of the support block, and the support block is movably inserted into the side wall of the screw. The end of the support block near the inside of the screw contacts the air guide hole. When air is introduced into the air guide hole and the air pressure increases, the support block is affected by the air pressure and moves outward and enters the clearance hole.

[0012] Furthermore, the stop block is movably inserted into the bottom of the support block, and one end of the stop block located outside the support block is connected to a telescopic spring. The other end of the telescopic spring is connected inside the screw. In its natural state without external force, the spring allows the support block to be completely located inside the screw.

[0013] Furthermore, the support components are evenly distributed along the axial direction of the screw, and there are at least three of them.

[0014] Furthermore, the number and position of the air guide pipes correspond one-to-one with the base of the compressor, and the extension sections of all the air guide pipes are merged and connected to the shut-off valve at the end. High-pressure gas is injected into the shut-off valve, and the gas enters the air guide hole through the air guide pipe, causing the support block to move outward into the clearance hole.

[0015] This invention provides a vibration reduction method for an air source heat pump compressor, using the aforementioned vibration reduction structure for the air source heat pump compressor. The method steps are as follows: S1. Before the transport unit, high-pressure gas is injected through the shut-off valve, and the high-pressure gas enters the air guide hole along the air guide pipe. S2. High-pressure gas exerts pressure on the support block and causes it to move outward into the clearance hole, while the telescopic spring is compressed. S3. During transportation, the bottom of the compressor feet is held in place by the support block. At this time, the support block and screw support the compressor, and the rubber feet cannot be deformed by force, that is, the compressor cannot shake significantly. S4. Install the unit and remove the high-pressure gas from the vent and duct through the shut-off valve. S5. The telescopic spring extends and applies pressure to the stop block, causing the support block to return to its original position. At this time, the support block leaves the clearance hole and retracts into the screw.

[0016] S6. When the compressor is put into use, the vibration generated by its operation is transmitted to the rubber feet through the compressor feet to achieve cushioning.

[0017] The present invention has the following beneficial effects: 1. This invention installs a screw inside the rubber foot pad and sets up a gas guiding component inside the screw. Through cooperation with the support component, high-pressure gas is injected into the shut-off valve, causing the support block to move outward. This allows the support block and screw to support the compressor's base, preventing the compressor from shaking significantly during transportation due to the elasticity of the bottom rubber foot pad. The rubber vibration damping foot pad at the bottom of the compressor does not need to consider transportation conditions, greatly improving its vibration damping efficiency during compressor operation.

[0018] 2. This invention, through the cooperation of spring and stop block, can realize the reset of support block after the high-pressure gas is released by the shut-off valve, so that the rubber foot pad can resume the supporting effect on the compressor foot, which is convenient for operation. Its vibration reduction structure does not require disassembly, is simple to operate, and provides convenience for operators. Attached Figure Description

[0019] Figure 1 A schematic diagram of the external structure of the invention's vibration reduction structure; Figure 2 This is a partial cross-sectional schematic diagram of the vibration reduction structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the transverse cross-sectional structure of the support block in this invention.

[0020] In the diagram: 1. Screw; 101. Sealing washer; 102. Air vent; 2. Air vent pipe; 21. Umbrella-shaped flare; 3. Umbrella-shaped nut; 4. Support block; 5. Compressor base; 6. Rubber foot pad; 61. Clearance hole; 62. Base plate; 7. Sealing ring; 8. Stop block; 9. Telescopic spring; 10. Nut. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1 A vibration damping structure for an air source heat pump compressor includes rubber feet 6, with a base plate 62 connected to the bottom of the rubber feet 6, and a screw 1 fixedly connected to the base plate 62. (See reference...) Figure 2 The screw 1 has an internal air guiding assembly, which includes an air guiding pipe 2, an umbrella-shaped nut 3, a sealing washer 101, and an air guiding hole 102. The air guiding hole 102 is located inside the screw 1. (See reference...) Figure 4 The top of the air guide hole 102 is connected to the air guide tube 2, and the bottom of the air guide tube 2 is connected to an umbrella-shaped flared end 21. The umbrella-shaped flared end 21 is fitted inside the umbrella-shaped nut 3, and the outer edge of the umbrella-shaped flared end 21 contacts the sealing washer 101. That is, the umbrella-shaped nut 3 is fitted outside the umbrella-shaped flared end 21 at the bottom of the air guide tube 2, and the umbrella-shaped nut 3 is connected to the thread on the outside of the top of the screw 1 to fix the position of the air guide tube 2. The sealing washer 101 is located between the screw 1 and the air guide tube 2, which can achieve a sealing effect and prevent leakage problems when the shut-off valve injects high-pressure gas into the air guide tube 2.

[0023] Please see Figure 2-3The top of the rubber foot pad 6 is fitted with the compressor foot 5, which is sleeved on the outside of the screw 1. A clearance hole 61 is provided at the position where the top of the rubber foot pad 6 contacts the compressor foot 5. The position of the clearance hole 61 corresponds one-to-one with the position of the support block 4, and the clearance hole 61 is located on the outside of the screw 1. The bottom of the air guide assembly is provided with a support assembly installed inside the screw 1. The support assembly includes the support block 4. After the shut-off valve injects gas into the air guide assembly, the support block 4 can move outward and partially enter the clearance hole 61. The number and position of the air guide pipes 2 correspond one-to-one with the compressor foot, and the extension sections of all the air guide pipes 2 are merged and connected to the shut-off valve at the end for convenient unified operation. High-pressure gas is injected into the shut-off valve. The gas enters the air guide hole 102 through the air guide pipe 2 and moves the support block 4 outward into the clearance hole 61, so that the support block 4 is located between the screw 1 and the clearance hole 61. At this time, the support block 4 and the screw 1 provide support for the compressor foot 5.

[0024] Please see Figure 2-3 The support assembly also includes a sealing ring 7, a stop block 8, and a telescopic spring 9. The sealing ring 7 is located on the outside of the support block 4, and the support block 4 is movably inserted into the side wall of the screw 1. One end of the support block 4 near the inside of the screw 1 contacts the air guide hole 102. When air is introduced into the air guide hole 102 and the air pressure increases, the support block 4 is affected by the air pressure and moves outward and enters the clearance hole 61. The stop block 8 is movably inserted into the bottom of the support block 4, and one end of the stop block 8 located outside the support block 4 is connected to the telescopic spring 9. The other end of the telescopic spring 9 is connected to the inside of the screw 1. In its natural state without external force, the spring allows the support block 4 to be completely located inside the screw 1, which facilitates the reset of the support block 4 after the high-pressure gas is discharged. Through the cooperation of the air guide assembly and the support assembly, the support block 4 can be repositioned by directing air to the screw 1. The stop valve injects high-pressure gas, causing the support block 4 to move outward into the clearance hole 61. This allows the support block 4 to engage between the clearance hole 61 and the screw 1, ensuring that the bottom of the compressor foot 5 is supported by the support block 4 and the screw 1. This significantly reduces the problem of large-scale compressor shaking during transportation. Simultaneously, the high-pressure gas is discharged through the stop valve, and with the cooperation of the stop block 8 and the telescopic spring 9, the support block 4 retracts back into the screw 1. This allows the vibration transmitted by the compressor foot 5 after startup to be absorbed by the rubber foot pad 6. Furthermore, the material selection of the rubber foot pad 6 no longer needs to consider transportation requirements, as it can fully meet vibration reduction needs. This improves the vibration reduction effect of the air source heat pump compressor. Moreover, this structure does not require disassembly during installation and use, making it simple to operate and highly practical.

[0025] Please see Figure 1A nut 10 is threadedly connected to the outside of the screw 1. The nut 10 is located above the compressor foot 5, and a washer fitted onto the outside of the screw 1 is provided between the bottom of the nut 10 and the compressor foot 5. This can limit the position of the compressor foot 5 outside the screw 1 without affecting the movement of the compressor foot 5, which is beneficial to enhancing the stability of the connection between the compressor and the vibration damping structure. In addition, the support components are evenly distributed along the axial direction of the screw 1, and there are at least three of them, to ensure that the screw 1 can be subjected to uniform force.

[0026] A vibration reduction method for an air source heat pump compressor, using the aforementioned vibration reduction structure for the air source heat pump compressor, comprises the following steps: S1. Before the transport unit, high-pressure gas is injected through the shut-off valve, and the high-pressure gas enters the air guide hole 102 along the air guide pipe 2. S2. High-pressure gas exerts pressure on support block 4 and causes support block 4 to move outward into clearance hole 61, while extension spring 9 is compressed. S3. During transportation, the bottom of the compressor foot 5 is held in place by the support block 4. At this time, the support block 4 and the screw 1 support the compressor, and the rubber foot pad 6 cannot be deformed by force, that is, the compressor cannot shake significantly. S4. Install the unit and remove the high-pressure gas in the air inlet 102 and air pipe 2 through the shut-off valve. S5. The extension spring 9 extends and applies pressure to the stop block 8, causing the support block 4 to return to its original position. At this time, the support block 4 leaves the clearance hole 61 and retracts into the screw 1.

[0027] S6. When the compressor is put into use, the vibration generated by its operation is transmitted to the rubber foot pads 6 through the compressor foot 5 to achieve cushioning.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibration damping structure for an air source heat pump compressor, comprising rubber feet (6), characterized in that: The bottom of the rubber foot pad (6) is connected to a base plate (62), and a screw (1) is fixedly connected to the base plate (62). An air guide assembly is provided inside the screw (1), and the top of the air guide assembly is connected to a shut-off valve. The compressor foot (5) of the air source heat pump compressor is placed on the top of the rubber foot pad (6), and the compressor foot (5) is sleeved on the outside of the screw (1). An avoidance hole (61) is provided at the position where the top of the rubber foot pad (6) contacts the compressor foot (5), and the avoidance hole (61) is located on the outside of the screw (1). A support assembly installed inside the screw (1) is provided at the bottom of the air guide assembly. The support assembly includes a support block (4), and after the shut-off valve injects gas into the air guide assembly, the support block (4) can move outward and partially enter the avoidance hole (61).

2. The vibration reduction structure of an air source heat pump compressor according to claim 1, characterized in that: The air guiding assembly includes an air guiding pipe (2), an umbrella nut (3), a sealing washer (101), and an air guiding hole (102). The air guiding hole (102) is opened inside the screw (1), and the top of the air guiding hole (102) is connected to the air guiding pipe (2). The umbrella nut (3) is sleeved on the bottom of the air guiding pipe (2) and is threaded to the outside of the top of the screw (1). The sealing washer (101) is located between the screw (1) and the air guiding pipe (2).

3. The vibration reduction structure of an air source heat pump compressor according to claim 2, characterized in that: The bottom of the air duct (2) is connected to an umbrella-shaped flare (21), which is fitted inside the umbrella-shaped nut (3), and the outer edge of the umbrella-shaped flare (21) is in contact with the sealing gasket (101).

4. The vibration reduction structure of an air source heat pump compressor according to claim 3, characterized in that: The support assembly also includes a sealing ring (7), a stop block (8), and a telescopic spring (9). The sealing ring (7) is located on the outside of the support block (4), and the support block (4) is movably inserted into the side wall of the screw (1). One end of the support block (4) near the inside of the screw (1) contacts the air guide hole (102). When air is introduced into the air guide hole (102) and the air pressure increases, the support block (4) is affected by the air pressure and moves outward and enters the clearance hole (61).

5. The vibration damping structure of an air source heat pump compressor according to claim 4, characterized in that: The stop block (8) is movably inserted into the bottom of the support block (4), and one end of the stop block (8) located outside the support block (4) is connected to a telescopic spring (9). The other end of the telescopic spring (9) is connected inside the screw (1). In its natural state without external force, the spring allows the support block (4) to be completely located inside the screw (1).

6. The vibration damping structure of an air source heat pump compressor according to claim 4, characterized in that: The support components are evenly distributed along the axial direction of the screw (1), and there are at least three of them.

7. The vibration damping structure of an air source heat pump compressor according to claim 2, characterized in that: The number and position of the air guide pipes (2) correspond one-to-one with the base of the compressor, and the extension sections of all the air guide pipes (2) are merged and connected to the shut-off valve at the end. High pressure gas is injected into the shut-off valve, and the gas enters the air guide hole (102) through the air guide pipes (2) and causes the support block (4) to move outward into the clearance hole (61).

8. A vibration reduction method for an air source heat pump compressor, characterized in that, The method steps using the vibration damping structure of the air source heat pump compressor according to any one of claims 1-7 are as follows: S1. Before the transport unit, high-pressure gas is injected through the shut-off valve, and the high-pressure gas enters the air inlet (102) along the air inlet pipe (2). S2, High-pressure gas exerts pressure on the support block (4) and causes the support block (4) to move outward into the clearance hole (61), while the telescopic spring (9) is compressed; S3. During transportation, the bottom of the compressor foot (5) is stuck by the support block (4). At this time, the support block (4) and the screw (1) support the compressor. The rubber foot pad (6) cannot be deformed by force, that is, the compressor cannot shake significantly. S4. Install the unit and remove the high-pressure gas in the air inlet (102) and air pipe (2) through the shut-off valve; S5. The extension spring (9) extends and applies pressure to the stop block (8), causing the support block (4) to return to its original position. At this time, the support block (4) leaves the clearance hole (61) and retracts into the screw (1). S6. When the compressor is put into use, the vibration generated by its operation is transmitted to the rubber foot pad (6) through the compressor foot (5) to achieve buffering.

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