Inverter compressor for heat pump water heater

Abstract

The utility model provides an inverter compressor for a heat pump water heater, and belongs to the technical field of heat pumps. The frequency conversion compressor for the heat pump water heater comprises a sound insulation cover, a frequency conversion compressor body and a magnetic suspension damping structure. Silencing holes are formed in the inner wall of the shell, and a sound insulation inner cavity is formed between the shell and the base; a sliding column is fixed in the sound insulation cover, a first magnet is installed at the upper end of the sliding column, a second magnet is installed at the lower end of the sliding column, and the magnet sleeve is arranged on the surface of the sliding column in a sliding and sleeving mode. Under the combined action of upper and lower magnetic forces, the vibration process is counteracted by the magnetic field force, the vibration is used up when being conducted to the base, a vibration source is effectively blocked, the damping effect is further improved, the vibration of the inverter compressor main body cannot be transferred to the base, and the dual damping effect is achieved; the whole sound insulation structure enables operation noise of the inverter compressor to be effectively isolated, and the requirement of the market for low noise is met.

Description

Technical Field

[0001] This application relates to the field of heat pumps, and more specifically, to a variable frequency compressor for a heat pump water heater. Background Technology

[0002] Currently, the noise of existing low-circulation temperature air source heat pump (chilled water) units, commonly known as "all-DC inverter heating units" or "heat pump heating units", comes from the frequency noise generated by the compressor when the compressor is frequency-inverted (increased frequency).

[0003] In existing technology, one or more layers of sound-absorbing and heat-insulating cotton are wrapped around the casing of the variable frequency compressor. In addition, sound-absorbing cotton is pasted inside the sheet metal side panels around the compressor. The purpose is to absorb and isolate the operating noise generated by the compressor. Currently, heat pump heating machines with less than 8HP can meet the user's acceptable low noise requirement of ≤58 decibels. However, heat pump heating machines with ≥10HP have higher compressor power, especially full DC variable frequency heating machines with more than 10HP. Their noise is all greater than 72 decibels. That is to say, the noise of the above-mentioned conventional sound-absorbing methods exceeds 72 decibels.

[0004] The existing technical solutions mentioned above have the following drawbacks: the noise generated by the variable frequency compressor during operation is mostly caused by vibration, which leads to significant noise pollution to the surrounding environment, affects the user experience, and also affects the stability and service life of the equipment. Utility Model Content

[0005] To overcome the above shortcomings, this application provides a variable frequency compressor for heat pump water heaters, which aims to improve the problem of significant noise pollution to the surrounding environment.

[0006] This application provides an embodiment of a variable frequency compressor for a heat pump water heater, including a sound insulation cover, a variable frequency compressor body, and a magnetic levitation vibration damping structure;

[0007] The soundproof cover includes a base and a shell. The inner wall of the shell is hollow and a vacuum isolation layer is provided. The shell is upside down on the upper end of the base. The inner wall of the shell is provided with sound-absorbing holes. A soundproof cavity is formed between the shell and the base.

[0008] The variable frequency compressor body is disposed inside the housing. The variable frequency compressor body is connected to a high-pressure exhaust pipe and a return pipe. The high-pressure exhaust pipe and the return pipe are respectively connected to quick-connect interfaces on the surface of the housing. The high-pressure exhaust pipe and the return pipe are corrugated pipes.

[0009] The magnetic levitation damping structure includes a suspension plate, a tie rod, and a magnet sleeve. The main body of the variable frequency compressor is fixed on the surface of the suspension plate. A sliding column is fixed inside the sound insulation cover. A first magnet is installed at the upper end of the sliding column, and a second magnet is installed at the lower end of the sliding column. The magnet sleeve has the same magnetic properties at the upper end as the lower end of the first magnet, and the magnet sleeve has the same magnetic properties at the lower end as the upper end of the second magnet. The magnet sleeve is slidably fitted on the surface of the sliding column. One end of the tie rod is connected to the magnet sleeve, and the other end of the tie rod is connected to the suspension plate.

[0010] In a preferred embodiment of this utility model, the sliding column is provided with four threads, and the four sliding columns are respectively located at the four corners of the soundproof cover. The magnet sleeve is provided in a one-to-one correspondence with the sliding column, and the pull rod is provided in a one-to-one correspondence with the magnet sleeve.

[0011] In a preferred embodiment of this utility model, the upper end of the pull rod is hinged to the magnet sleeve, the lower end of the pull rod is hinged to the suspension plate, and the main body of the variable frequency compressor is detachably fixed to the surface of the suspension plate by bolts.

[0012] In a preferred embodiment of this utility model, the pull rod includes a slide rod and a sleeve, a damping cavity is provided inside the sleeve, one end of the slide rod is hinged to the magnet, and the other end of the slide rod is slidably inserted into the damping cavity.

[0013] In a preferred embodiment of this utility model, one end of the sleeve is hinged to the suspension plate, a tension spring connected to the slide rod is fixed inside the sleeve, and a damping block that contacts the inner wall of the sleeve is fixed at the end of the slide rod.

[0014] In a preferred embodiment of this utility model, the base is equipped with a locking mechanism for locking the suspension plate, and the magnet is an electromagnet or a permanent magnet.

[0015] In a preferred embodiment of the present invention, the locking mechanism includes a first clamping block and a second clamping block. The first clamping block is fixed with a first rack, and the second clamping block is fixed with a second rack. The first rack and the second rack mesh with a gear. The first clamping block and the second clamping block are respectively disposed on both sides of the suspension plate.

[0016] In a preferred embodiment of this utility model, the gear is rotatably mounted on the bottom of the base; the upper surface of the base is provided with a sliding groove, and there are two sliding grooves, with the first rack and the second rack respectively slidingly engaged in the corresponding sliding grooves.

[0017] In a preferred embodiment of this utility model, the base is rotatably mounted with a rotating shaft, a worm gear is coaxially fixed on the surface of the rotating shaft, the gear is coaxially fixed with the rotating shaft, the worm gear meshes with a worm, one end of the worm is coaxially fixed with a main shaft, one end of the main shaft extends to the outer wall of the base and has an internal hexagonal groove.

[0018] Beneficial Effects: This application provides a variable frequency compressor for a heat pump water heater. The hollow inner wall of the casing is equipped with a vacuum isolation layer, which reduces noise transmission. Combined with the sound-absorbing holes on the inner wall, it greatly weakens the external transmission of noise. The suspension plate is suspended in the air by a pull rod, so that the vibration generated by the suspension plate is isolated by the magnetic sleeve suspended on the surface of the sliding column. The magnetic sleeve is subjected to the upward magnetic force of the second magnet and the downward magnetic force of the first magnet. Under the combined action of the upper and lower magnetic forces, it is in a balanced state, so that the vibration process is canceled by the magnetic force. The vibration is completely consumed before it is transmitted to the base, effectively blocking the vibration source and further improving the vibration reduction effect. The vibration of the variable frequency compressor body cannot be transmitted to the base, achieving a double vibration reduction effect. The entire sound insulation structure can effectively isolate the operating noise of the variable frequency compressor, meeting the market's requirements for low noise. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the variable frequency compressor for a heat pump water heater provided in the embodiments of this application;

[0021] Figure 2 A three-dimensional structural diagram of the magnetic levitation damping structure provided for an embodiment of this application;

[0022] Figure 3 A three-dimensional structural diagram of the locking mechanism provided for the embodiments of this application;

[0023] Figure 4 A schematic diagram of the three-dimensional structure of the worm gear meshing provided for the embodiments of this application;

[0024] Figure 5 A schematic diagram of the three-dimensional structure of the tie rod provided for an embodiment of this application.

[0025] In the diagram: 100, soundproof cover; 110, base; 130, housing; 150, sliding column; 151, first magnet; 152, second magnet; 170, locking mechanism; 171, first clamping block; 172, second clamping block; 173, first rack; 174, second rack; 175, gear; 176, rotating shaft; 177, main shaft; 178, worm gear; 179, worm; 300, variable frequency compressor body; 310, high-pressure exhaust pipe; 330, return air pipe; 500, magnetic levitation damping structure; 510, suspension plate; 530, tie rod; 531, sliding rod; 533, sleeve; 535, tension spring; 537, damping block; 550, magnet sleeve. Detailed Implementation

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0029] Please see Figures 1-5 This utility model provides a variable frequency compressor for a heat pump water heater, including a sound insulation cover 100, a variable frequency compressor body 300, and a magnetic levitation shock absorption structure 500.

[0030] The soundproof cover 100 includes a base 110 and a housing 130. The inner wall of the housing 130 is hollow and a vacuum isolation layer is provided. The housing 130 is upside down on the upper end of the base 110. The inner wall of the housing 130 is provided with sound-absorbing holes. A soundproof cavity is formed between the housing 130 and the base 110.

[0031] The variable frequency compressor body 300 is disposed inside the housing 130. The variable frequency compressor body 300 is connected to a high-pressure exhaust pipe 310 and a return pipe 330. The high-pressure exhaust pipe 310 and the return pipe 330 are respectively connected to quick-connect interfaces on the surface of the housing 130. The high-pressure exhaust pipe 310 and the return pipe 330 are corrugated pipes.

[0032] The magnetic levitation damping structure 500 includes a suspension plate 510, a pull rod 530, and a magnet sleeve 550. The variable frequency compressor body 300 is fixed to the surface of the suspension plate 510. A sliding column 150 is fixed inside the sound insulation cover 100. A first magnet 151 is installed at the upper end of the sliding column 150, and a second magnet 152 is installed at the lower end of the sliding column 150. The magnet sleeve 550 has the same magnetic properties at the upper end as the first magnet 151 and at the lower end as the second magnet 152. The magnet sleeve 550 is slidably fitted onto the surface of the sliding column 150. One end of the pull rod 530 is connected to the magnet sleeve 550, and the other end of the pull rod 530 is connected to the suspension plate 510.

[0033] In a specific embodiment of this utility model, the sliding column 150 is provided with four threads, and the four sliding columns 150 are respectively located at the four corners of the soundproof cover 100. The magnet sleeve 550 is provided in a one-to-one correspondence with the sliding column 150, and the pull rod 530 is provided in a one-to-one correspondence with the magnet sleeve 550. The suspension plate 510 is lifted by the four pull rods 530 to make it in a balanced state, ensuring that the variable frequency compressor body 300 is stably supported.

[0034] In a specific embodiment of this utility model, the upper end of the pull rod 530 is hinged to the magnet sleeve 550, and the lower end of the pull rod 530 is hinged to the suspension plate 510. The variable frequency compressor body 300 is detachably fixed to the surface of the suspension plate 510 by bolts, which facilitates disassembly and maintenance.

[0035] In a specific embodiment of this utility model, the pull rod 530 includes a slide rod 531 and a sleeve 533. A damping cavity is provided inside the sleeve 533. One end of the slide rod 531 is hinged to the magnet sleeve 550, and the other end of the slide rod 531 is slidably inserted into the damping cavity. The slide rod 531 slides and extends within the damping cavity to counteract the kinetic energy generated by vibration and effectively weaken and isolate the vibration source.

[0036] In a specific embodiment of this utility model, one end of the sleeve 533 is hinged to the suspension plate 510, and a tension spring 535 connected to the slide rod 531 is fixed inside the sleeve 533. A damping block 537 that contacts the inner wall of the sleeve 533 is fixed at the end of the slide rod 531. The tension spring 535 and the damping block 537 work together to achieve a further shock absorption effect.

[0037] In a specific embodiment of this utility model, the base 110 is equipped with a locking mechanism 170 for locking the suspension plate 510. The magnet is an electromagnet or a permanent magnet. During transportation, the locking mechanism 170 can lock the suspension plate 510 to prevent the suspension plate 510 from shaking during transportation.

[0038] In a specific embodiment of this utility model, the locking mechanism 170 includes a first clamping block 171 and a second clamping block 172. The first clamping block 171 is fixed with a first rack 173, and the second clamping block 172 is fixed with a second rack 174. The first rack 173 and the second rack 174 mesh with a gear 175. The first clamping block 171 and the second clamping block 172 are respectively disposed on both sides of the suspension plate 510. By controlling the rotation of the gear 175, the first rack 173 and the second rack 174 are pushed to slide synchronously, thereby driving the first clamping block 171 and the second clamping block 172 to clamp and fix both sides of the suspension plate 510.

[0039] In a specific embodiment of this utility model, the gear 175 is rotatably mounted on the bottom of the base 110; the upper surface of the base 110 is provided with a sliding groove, and there are two sliding grooves, with the first rack 173 and the second rack 174 respectively slidingly engaged in the corresponding sliding grooves.

[0040] In a specific embodiment of this utility model, a rotating shaft 176 is rotatably mounted on the base 110. A worm gear 178 is coaxially fixed on the surface of the rotating shaft 176. A gear 175 is coaxially fixed with the rotating shaft 176. A worm 179 is meshed with the worm gear 178. A main shaft 177 is coaxially fixed at one end of the worm 179. One end of the main shaft 177 extends to the outer wall of the base 110 and has an internal hexagonal groove.

[0041] The working principle of the inverter compressor in this heat pump water heater is as follows: During use, a vacuum isolation layer is set in the hollow inner wall of the housing 130, which reduces noise transmission. Combined with the sound-absorbing holes set in the inner wall, the noise transmission is greatly weakened. The suspension plate 510 is raised by the set pull rod 530 and is in a suspended state. The vibration generated by the suspension plate 510 is isolated by the magnetic sleeve 550 suspended on the surface of the sliding column 150. The magnetic sleeve 550 is subjected to the upward magnetic force of the second magnet 152 and the downward magnetic force of the first magnet 151. Under the combined action of the upper and lower magnetic forces, it is in a balanced state, so that the vibration process is canceled by the magnetic force. The vibration is completely consumed before it is transmitted to the base 110, effectively blocking the vibration source and further improving the vibration reduction effect. The vibration of the inverter compressor body 300 cannot be transmitted to the base 110, achieving a double vibration reduction effect. The entire sound insulation structure can effectively isolate the operating noise of the inverter compressor, meeting the market's requirements for low noise.

[0042] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A variable frequency compressor for a heat pump water heater, characterized in that, include A soundproof cover (100) includes a base (110) and a housing (130). The inner wall of the housing (130) is hollow and a vacuum isolation layer is provided. The housing (130) is upside down on the upper end of the base (110). The inner wall of the housing (130) is provided with sound-absorbing holes. A soundproof cavity is formed between the housing (130) and the base (110). A variable frequency compressor body (300) is disposed inside the housing (130). The variable frequency compressor body (300) is connected to a high-pressure exhaust pipe (310) and a return pipe (330). The high-pressure exhaust pipe (310) and the return pipe (330) are respectively connected to quick-connect interfaces on the surface of the housing (130). The high-pressure exhaust pipe (310) and the return pipe (330) are corrugated pipes. A magnetic levitation damping structure (500) includes a suspension plate (510), a pull rod (530), and a magnet sleeve (550). The main body (300) of the variable frequency compressor is fixed on the surface of the suspension plate (510). A sliding column (150) is fixed inside the sound insulation cover (100). A first magnet (151) is installed on the upper end of the sliding column (150), and a second magnet (152) is installed on the lower end of the sliding column (150). The magnet sleeve (550) has the same magnetism at the upper end as the first magnet (151) and the same magnetism at the lower end as the second magnet (152). The magnet sleeve (550) is slidably sleeved on the surface of the sliding column (150). One end of the pull rod (530) is connected to the magnet sleeve (550), and the other end of the pull rod (530) is connected to the suspension plate (510).

2. The variable frequency compressor for a heat pump water heater according to claim 1, characterized in that, The slide column (150) is provided with four threads. The four slide columns (150) are respectively located at the four corners of the soundproof cover (100). The magnet sleeve (550) is provided in a one-to-one correspondence with the slide column (150), and the pull rod (530) is provided in a one-to-one correspondence with the magnet sleeve (550).

3. The variable frequency compressor for a heat pump water heater according to claim 1, characterized in that, The upper end of the pull rod (530) is hinged to the magnet sleeve (550), and the lower end of the pull rod (530) is hinged to the suspension plate (510). The variable frequency compressor body (300) is detachably fixed to the surface of the suspension plate (510) by bolts.

4. The variable frequency compressor for a heat pump water heater according to claim 1, characterized in that, The pull rod (530) includes a slide rod (531) and a sleeve (533). A damping cavity is provided inside the sleeve (533). One end of the slide rod (531) is hinged to the magnet sleeve (550), and the other end of the slide rod (531) is slidably inserted into the damping cavity.

5. The variable frequency compressor for a heat pump water heater according to claim 4, characterized in that, One end of the sleeve (533) is hinged to the suspension plate (510), and a tension spring (535) connected to the slide rod (531) is fixed inside the sleeve (533). A damping block (537) that contacts the inner wall of the sleeve (533) is fixed at the end of the slide rod (531).

6. The variable frequency compressor for a heat pump water heater according to claim 1, characterized in that, The base (110) is equipped with a locking mechanism (170) for locking the suspension plate (510), and the magnet is an electromagnet or a permanent magnet.

7. The variable frequency compressor for a heat pump water heater according to claim 6, characterized in that, The locking mechanism (170) includes a first clamping block (171) and a second clamping block (172). The first clamping block (171) is fixed with a first rack (173), and the second clamping block (172) is fixed with a second rack (174). The first rack (173) and the second rack (174) mesh with a gear (175). The first clamping block (171) and the second clamping block (172) are respectively disposed on both sides of the suspension plate (510).

8. The variable frequency compressor for a heat pump water heater according to claim 7, characterized in that, The gear (175) is rotatably mounted on the bottom of the base (110); the upper surface of the base (110) is provided with a sliding groove, and there are two sliding grooves. The first rack (173) and the second rack (174) are respectively slidably engaged in the sliding grooves at corresponding positions.

9. A variable frequency compressor for a heat pump water heater according to claim 8, characterized in that, The base (110) is rotatably mounted with a rotating shaft (176). A worm gear (178) is coaxially fixed on the surface of the rotating shaft (176). A gear (175) is coaxially fixed with the rotating shaft (176). The worm gear (178) meshes with a worm (179). One end of the worm (179) is coaxially fixed with a main shaft (177). One end of the main shaft (177) extends to the outer wall of the base (110) and has an internal hexagonal groove.

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