A housing assembly and compressor comprising the same
By introducing porous foam structures and phase change materials into the compressor housing assembly, the problems of radial modal resonance of the housing acoustic cavity and motor overheating are solved, achieving noise reduction, resonance suppression and reliability improvement, which is suitable for high-end home appliances and industrial equipment.
Patent Information
- Application Number
- CN202521772964.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-20
AI Technical Summary
In existing technologies, the radial modes of the compressor housing acoustic cavity are prone to resonance, and overheat protection measures for refrigeration compressors can easily lead to motor damage. Furthermore, existing solutions are costly or complex, making mass production difficult.
Porous foam structures and phase change materials are introduced into the compressor housing assembly to absorb vibration energy and regulate temperature fluctuations through a sealed cavity. The inlet and outlet ports are designed to facilitate material replacement. Welding or integral casting is used to ensure structural stability. Appropriate materials and shapes are selected to optimize thermal management and vibration suppression.
It effectively suppresses radial modal resonance of the housing acoustic cavity, reduces noise, improves compressor reliability and operating efficiency, avoids motor overheating damage, is easy to mass-produce and has low cost.
Smart Images
Figure CN224679691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor technology, and in particular to a housing assembly and a compressor containing the housing assembly. Background Technology
[0002] Rotary compressors utilize a high-speed rotating motor to drive an eccentric shaft, compressing refrigerant within the cylinder. Cooling or heating is achieved through the heat conversion of the refrigerant. However, the pulses generated by the high-speed rotation of the motor and the mechanical friction with the pump body inevitably cause noise in the compressor. Traditionally, the motor stator and compressor housing are primarily fixed using a heat-shrink fitting. However, the axial mode of the compressor housing's acoustic cavity is typically below 500Hz, while the radial mode is located in the 500-1200Hz frequency range. The entire compressor exhibits multiple structural modes within this frequency range (such as the distributor mode and pump body mode). The pump body mode is particularly prone to resonance with the radial mode of the housing's acoustic cavity. Resonance energy can induce abnormal radial vibration of the housing through weld points, generating noise, or can be directly radiated through the housing.
[0003] To address these issues, existing technologies primarily aim to avoid resonance with the acoustic cavity modes by altering structural modes (especially pump body modes). However, modifying the pump body structure typically increases cost and complexity significantly, making mass production difficult.
[0004] In addition, refrigeration compressors inevitably overheat during operation due to various reasons, such as insufficient or excessive refrigerant, dirty evaporators or condensers, blockages in the capillary tube or refrigerant circuit system, low voltage, or abnormal compressor operating pressure. A common solution is to equip the refrigeration compressor motor with an overheat protector (commonly referred to in the industry as a "thermal protector"). This protector cuts off the power supply when the compressor temperature becomes too high, preventing damage from sustained high temperatures. However, this method requires shutdown for cooling. Upon restarting, the motor's start-up creates localized thermal shock, causing the motor temperature to rise excessively and potentially leading to motor damage. Utility Model Content
[0005] The purpose of this utility model is to provide a housing assembly and a compressor containing the same, so as to solve the technical problem in the prior art that there is no effective means to solve the problem of easy resonance of the radial mode of the acoustic cavity of the compressor housing.
[0006] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides a housing assembly, including a housing support, a housing cylinder, and a housing ring; wherein: The housing support is fixed to the housing cylinder; The shell ring is sleeved on the outside of the shell cylinder, and the installation height corresponds to the height of the motor stator heat sleeve; A sealed cavity is formed between the shell ring and the shell cylinder; The sealed cavity is filled with a porous foam structure and a phase change material; The shell ring is also provided with inlet and outlet ports. By incorporating a porous foam structure and phase change material within the sealed cavity, the vibration energy generated by resonance during compressor operation can be effectively absorbed, and the radial modes of the shell acoustic cavity can be suppressed. The porous foam structure can disperse high-frequency vibrations, while the phase change material regulates temperature fluctuations through heat absorption or release, thereby suppressing the effects of thermal shock. The inlet and outlet port design facilitates the filling or replacement of the phase change material, ensuring the long-term stability of the material's performance. This utility model achieves noise reduction and resonance suppression through this structural solution without altering the pump body structure, making it easy to mass-produce and improving the reliability and operating efficiency of the compressor.
[0007] As a further improvement of this utility model, the shell ring forms the sealed chamber with the shell cylinder through welding or integral casting. Welding or integral casting ensures a tight and reliable connection between the shell ring and the shell cylinder, effectively preventing leakage or structural loosening of the sealed chamber during operation, further improving the overall structural stability and sealing performance. Furthermore, this structural processing method is simple, requiring no complex assembly processes, which helps reduce manufacturing costs and improve production efficiency.
[0008] As a further improvement of this invention, the porous foam structure includes one of foamed copper, foamed nickel, foamed carbon, and organic foam. These materials possess good mechanical strength and thermal stability, enabling them to withstand the high-temperature environment during compressor operation. Simultaneously, the high porosity of the porous foam structure effectively disperses vibration energy, thereby reducing the impact of resonance. Taking foamed copper as an example, its excellent thermal conductivity further aids in heat dissipation, further enhancing the thermal stability of the housing assembly. Furthermore, these materials are easy to process and mold, facilitating mass production.
[0009] As a further improvement of this invention, the phase change material includes one of alkanes, paraffin, water, and ethers. These phase change materials have a suitable phase change temperature range and a high latent heat of phase change, which can effectively absorb temperature fluctuations caused by load changes during compressor operation, thereby mitigating the impact of thermal shock on the housing components.
[0010] As a further improvement of this utility model, the cross-sectional shape of the inner cavity of the shell ring is rectangular or arc-shaped. A rectangular cross-section is easier to manufacture and provides a larger filling space, which is beneficial for improving the flexibility of the arrangement of porous foam structures and phase change materials; an arc-shaped cross-section better fits the shape of the shell cylinder, helping to enhance the overall mechanical stability of the structure. Different cross-sectional shapes can be selected according to the actual assembly space and noise reduction requirements to achieve optimal vibration suppression and thermal management performance.
[0011] As a further improvement of this invention, the height of the sealed cavity is not less than the height of the heat-shrinking area of the motor stator. This design ensures that the sealed cavity can fully cover the heat-shrinking area during motor operation, effectively absorbing and evenly distributing heat, and avoiding material fatigue or structural deformation caused by excessively high local temperatures. Simultaneously, the height setting of the sealed cavity helps improve the absorption efficiency of vibration energy, further optimizing noise reduction and anti-resonance effects. This structure also reduces the direct impact of external heat sources on the internal components of the compressor, enhancing the stability and reliability of system operation.
[0012] As a further improvement of this utility model, the shell ring is a full-circle annular structure, and there is a gap between the top edge and the bottom of the shell support after installation.
[0013] As a further improvement of this utility model, the shell ring is a ring structure with an opening, and the shell support is located at the opening of the shell ring.
[0014] As a further improvement of this utility model, the shell ring is a full-circle annular structure with a notch on it; the shell support is located at the notch.
[0015] As a further improvement of this utility model, the proportion of phase change material filled in the shell ring satisfies the following formula: (L+D) / H ≤ aH; D / H ≤ a ≤ 1; Where: L is the stator heat jacket height, D is the stator stack height, H is the maximum longitudinal span of the sealed cavity, and a is the volume coefficient of the phase change material. The volume coefficient 'a' in the above formula reflects the reasonable range of the space ratio occupied by the phase change material inside the sealed cavity, ensuring that it can fully exert its thermal buffering effect without affecting structural strength and vibration suppression performance due to excessive filling. By controlling the geometric relationship between L, D, and H, the overall performance of the shell-ring structure in terms of thermal management and mechanical response can be further optimized, improving the overall working stability and environmental adaptability of the compressor.
[0016] This invention provides a compressor, including the aforementioned housing assembly. Through optimized design of the housing assembly, this compressor achieves synergistic enhancement of thermal management and vibration suppression, maintaining a stable temperature field and low-amplitude vibration response even under high-frequency alternating load conditions. Actual operational tests show that the compressor using this housing assembly outperforms traditional structures in terms of noise level, energy efficiency ratio, and lifespan, making it particularly suitable for high-end home appliances and industrial equipment scenarios with limited space and high requirements for operational stability. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a three-dimensional structural schematic diagram of one embodiment of the housing assembly of this utility model; Figure 2 This is a front view of one embodiment of the housing assembly of this utility model; Figure 3 yes Figure 2 Sectional view along line AA; Figure 4 yes Figure 3 Enlarged view of part I in the middle; Figure 5 This is a three-dimensional structural schematic diagram of the second embodiment of the housing assembly of this utility model; Figure 6 This is a front view of a second embodiment of the housing assembly of this utility model; Figure 7 yes Figure 6 Sectional view along the BB direction; Figure 8 This is a three-dimensional structural schematic diagram of the third embodiment of the housing assembly of this utility model; Figure 9 This is a front view of the third embodiment of the housing assembly of this utility model; Figure 10 yes Figure 9 C-axis sectional view; Figure 11 This is a schematic diagram of the phase change material filling in the shell assembly of this utility model.
[0019] In the picture: 1. Housing support; 2. Shell / cylinder body; 3. Shell rings; 4. Inlet and outlet ports; 5. Porous foam materials; 6. Phase change materials; 8. Motor stator. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] like Figures 1-11 As shown, this utility model provides a housing assembly, including a housing support 1, a housing cylinder 2, and a housing ring 3. The housing support 1 is fixed to the housing cylinder 2, supporting the entire housing assembly and connecting to other components of the compressor. The housing cylinder 2 is fixed to the housing support 1 and internally accommodates a motor stator 8. The housing ring 3 is sleeved on the outside of the housing cylinder 2, forming an annular sealed cavity with the housing cylinder 2 to accommodate a phase change material 6. The installation height of the housing ring 3 corresponds to the heat-shrink height of the motor stator 8. The housing ring 3 has inlet / outlet ports 4 for filling or replacing the phase change material 6 into the annular cavity. Porous foam material 5 is disposed between the housing cylinder 2 and the housing ring 3 to support the phase change material 6 and enhance its thermal conductivity. Through this structural design, the housing assembly can effectively absorb the heat generated during motor operation, reduce the thermal shock during motor startup, slow down the motor temperature rise, and prevent the motor from overheating.
[0022] By incorporating a porous foam structure and phase change material 6 within a sealed cavity, the vibration energy generated by resonance during compressor operation can be effectively absorbed, and the radial modes of the housing acoustic cavity can be suppressed, reducing housing vibration. Furthermore, the vibration peak value can be adjusted by adding the proportion of phase change material 6. The porous foam structure disperses high-frequency vibrations, while the phase change material 6 regulates temperature fluctuations through heat absorption or release, thereby suppressing the effects of thermal shock. The phase change process of the phase change material 6 achieves uniform heat distribution and release, further improving the compressor's thermal stability and operating efficiency. The inlet and outlet design facilitates the filling or replacement of the phase change material 6, ensuring the long-term stability of the material's performance. This invention achieves noise reduction and resonance suppression through this structural solution without altering the pump body structure, making it easy to mass-produce and improving the compressor's reliability and operating efficiency.
[0023] The inlet and outlet ports 4 on the shell ring 3 are equipped with sealing structures to ensure the sealing of the annular sealed cavity and prevent leakage of the phase change material 6 during operation. The porous foam material 5 is made of a high thermal conductivity material, which can effectively improve the heat transfer efficiency, while also having good mechanical strength to support the volume change of the phase change material 6 during the phase change process.
[0024] Specifically, in this embodiment, the shell ring 3 forms a sealed chamber with the shell cylinder 2 through welding or integral casting. Welding or integral casting ensures a tight and reliable connection between the shell ring 3 and the shell cylinder 2, effectively preventing leakage or structural loosening of the sealed chamber during operation, further improving the overall structural stability and sealing performance. Furthermore, this structural processing method is simple, requiring no complex assembly processes, which helps reduce manufacturing costs and improve production efficiency.
[0025] As an optional embodiment of this utility model, the porous foam structure includes one of foamed copper, foamed nickel, foamed carbon, and organic foam; any material with a porous structure that absorbs sound and reduces noise can be used. These materials possess good mechanical strength and thermal stability, enabling them to withstand the high-temperature environment during compressor operation. Simultaneously, the high porosity of the porous foam structure effectively disperses vibration energy, thereby reducing the impact of resonance. Taking foamed copper as an example, its excellent thermal conductivity also aids in heat dissipation, further enhancing the thermal stability of the housing assembly. Furthermore, these materials are easy to process and mold, facilitating mass production.
[0026] As an optional embodiment of this utility model, the phase change material 6 includes one of alkanes, paraffin, water, and ethers. These phase change materials 6 have a suitable phase change temperature range and a high latent heat of phase change, which can effectively absorb temperature fluctuations caused by load changes during compressor operation, thereby mitigating the impact of thermal shock on the housing components.
[0027] It should be noted that since phase change materials may undergo volume changes during the phase change process, the support capacity of the porous foam structure and the cavity's capacity must be fully considered during the design to accommodate the expansion or contraction of the material. The phase change material cannot fill the entire sealed cavity.
[0028] Specifically, the proportion of phase change material 6 filled inside the shell ring 3 satisfies the following formula: (L+D) / H ≤ aH; D / H ≤ a ≤ 1; Where: L is the height of the heat-shrink sleeve of the motor stator 8 (with the bottom of the shell ring 3 as a reference), D is the stacking height of the motor stator 8, H is the maximum span of the sealed cavity in the longitudinal direction, and a is the volume factor of the phase change material 6. The volume factor 'a' in the above formula reflects the reasonable range of the space ratio occupied by the phase change material 6 inside the sealed cavity, ensuring that it can fully play its thermal buffering role without affecting the structural strength and vibration suppression performance due to excessive filling. By controlling the geometric relationship between L, D, and H, the overall performance of the shell ring 3 structure in terms of thermal management and mechanical response can be further optimized, improving the overall working stability and environmental adaptability of the compressor.
[0029] By appropriately matching the porosity of the porous foam material 5 and the volume change rate of the phase change material 6, the internal stress caused by the phase change can be effectively alleviated, preventing the cavity from deforming or breaking due to pressure concentration. Simultaneously, the high thermal conductivity of the porous foam material 5 can accelerate the thermal response of the phase change material 6, enabling it to rapidly complete the heat absorption or release process when the temperature changes, thus improving thermal management efficiency.
[0030] As a further improvement of this utility model, the inner cavity cross-section of the shell ring 3 is rectangular or arc-shaped. A rectangular cross-section is easier to manufacture and provides a larger filling space, which is beneficial for improving the arrangement flexibility of the porous foam structure and phase change material 6; an arc-shaped cross-section better fits the shape of the shell cylinder 2, helping to enhance the overall mechanical stability of the structure. Different cross-sectional shapes can be selected according to the actual assembly space and noise reduction requirements to achieve optimal vibration suppression and thermal management performance.
[0031] To ensure effective heat dissipation, the height of the sealed cavity is no less than the height of the heat-shrink area of the motor stator. This design ensures that the sealed cavity fully covers the heat-shrink area during motor operation, effectively absorbing and evenly distributing heat, and preventing material fatigue or structural deformation caused by excessively high local temperatures. Simultaneously, the height of the sealed cavity helps improve vibration energy absorption efficiency, further optimizing noise reduction and anti-resonance effects. This structure also reduces the direct impact of external heat sources on the internal components of the compressor, enhancing the stability and reliability of system operation.
[0032] As an optional embodiment of this utility model, such as Figures 1-4 As shown, when the height of the motor stator 8 is relatively small and the housing support 1 is located on the upper side, and the housing ring 3 is lower than the housing support 1 after installation, the housing ring 3 with the following structure is selected. Specifically, the housing ring 3 is a full-circle ring structure, and there is a gap between the top edge and the bottom of the housing support 1 after installation.
[0033] As another optional embodiment of this utility model, such as Figures 5-7 As shown, when the motor stator 8 is relatively tall and installed high up, and the housing bracket 1 and the motor stator 8 are mostly overlapped, the housing ring 3 with the following structure is selected. Specifically, the housing ring 3 is a ring structure with an opening, and the housing bracket 1 is located at the opening of the housing ring 3.
[0034] As a third embodiment of this utility model, such as Figures 8-10 As shown, when the motor stator 8 is relatively tall and installed at the top, and the housing bracket 1 and the motor stator 8 have a small overlap, the housing ring 3 with the following structure is selected. Specifically, the housing ring 3 is a full-circle ring structure with a notch on it; the housing bracket 1 is located at the notch.
[0035] The present invention provides a compressor, including a housing assembly.
[0036] Through optimized design of the housing assembly, the phase change material 6 maintains a stable temperature during its phase change, absorbing the large amount of heat released during motor startup and resulting in a smoother motor temperature rise. After completing its phase change, the phase change material 6 becomes liquid, increasing damping during compressor operation and thus reducing vibration levels, improving compressor safety and reliability. Simultaneously, the sound-absorbing properties of the porous foam material 5 reduce overall compressor noise, making operation quieter. This achieves synergistic enhancement of thermal management and vibration suppression, maintaining a stable temperature field and low-amplitude vibration response even under high-frequency alternating load conditions. Actual operational tests show that compressors using this housing assembly outperform traditional structures in terms of noise level, energy efficiency, and lifespan, making them particularly suitable for high-end home appliances and industrial equipment applications with limited space and high requirements for operational stability.
[0037] First, it should be noted that "inward" refers to the direction towards the center of the storage space, while "outward" refers to the direction away from the center of the storage space.
[0038] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0040] 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 mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0043] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A housing assembly, characterized in that, Includes a shell support, a shell cylinder, and a shell ring; wherein: The housing support is fixed to the housing cylinder; The shell ring is sleeved on the outside of the shell cylinder, and the installation height corresponds to the height of the motor stator heat sleeve; A sealed cavity is formed between the shell ring and the shell cylinder; The sealed cavity is filled with a porous foam structure and a phase change material; The shell ring is also provided with inlet and outlet ports.
2. The housing assembly according to claim 1, characterized in that, The shell ring forms the sealed chamber with the shell cylinder by welding or integral casting.
3. The housing assembly according to claim 1, characterized in that, The porous foam structure includes one of the following: copper foam, nickel foam, carbon foam, and organic foam.
4. The housing assembly according to claim 1, characterized in that, The phase change material includes one of the following: alkanes, paraffins, water, and ethers.
5. The housing assembly according to claim 1, characterized in that, The cross-sectional shape of the inner cavity of the shell ring is rectangular or arc-shaped.
6. The housing assembly according to claim 1, characterized in that, The height of the sealed cavity is not less than the height of the motor stator heat-shrink area.
7. The housing assembly according to claim 1, characterized in that, The shell ring is a complete ring structure, and there is a gap between the top edge and the bottom of the shell support after installation.
8. The housing assembly according to claim 1, characterized in that, The shell ring is a ring-shaped structure with an opening, and the shell support is located at the opening of the shell ring.
9. The housing assembly according to claim 1, characterized in that, The shell ring is a complete ring structure with a notch; the shell support is located at the notch.
10. The housing assembly according to claim 1, characterized in that, The proportion of phase change material filled inside the shell ring satisfies the following formula: (L+D) / H ≤ aH; D / H ≤ a ≤ 1; Where: L is the height of the motor stator heat jacket, D is the stacking height of the motor stator, H is the maximum span of the sealed cavity in the longitudinal direction, and a is the volume coefficient of the phase change material.
11. A compressor, characterized in that, Includes the housing assembly as described in any one of claims 1-10.