Compressor vibration reduction fixing device, parking air conditioner and control method

Abstract

The application provides a compressor damping fixing device, a parking air conditioner and a control method, wherein the compressor damping fixing device comprises a side wall damping fixing assembly, the side wall damping fixing assembly comprises: an air spring assembly comprising an air spring and an air pump, the air pump can inflate the air cavity or exhaust air from the air cavity according to the real-time operation frequency of the compressor to adjust the rigidity of the air spring; a first connecting structure, one end of which is connected with the first end of the air spring assembly, and the other end is connected with the outer side wall of the compressor; and a second connecting structure, one end of which is connected with the second end of the air spring assembly, and the other end is connected with the outer casing of the air conditioner. The rigidity of the air spring can be adjusted according to the real-time operation frequency of the compressor under the inflation and exhaust action of the air pump, the damping support effect of the device is better, and the damage phenomenon caused by excessive stress of the suction and exhaust port connection position of the compressor is effectively prevented.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a compressor vibration damping and fixing device, a parking air conditioner and a control method. Background Technology

[0002] Variable frequency compressors are a common type of compressor used in parking air conditioners. They are relatively heavy and prone to vibration during operation and transport. Since the outdoor unit of the parking air conditioner is installed on the outside of the truck cab, the vibrations and noise generated by the compressor are more easily transmitted to the user. When the truck is moving, the parking air conditioner is subjected to vibrations generated by the cab shell on the road surface. Large vibrations in the compressor can easily produce abnormal noise and significantly impact the lifespan of the intake and exhaust pipes, potentially leading to damage to the pipes and chassis in severe cases.

[0003] Existing compressor bases typically use three rubber feet for fixation to improve compressor stability. However, this method is insufficient for the operating conditions and transportation environment of parking air conditioners; that is, current technology is not effective in solving the problems of compressor shaking and poor stability in parking air conditioners.

[0004] Patent publication number CN 213089958 U discloses a port air conditioning compressor fixing device, belonging to the field of special air conditioning. It includes a clamping plate, one side of which is fixedly installed on the side wall of the outdoor unit. The other side of the clamping plate has a latch, the shape of which matches the shape of the compressor's outer wall. The latch is secured to the compressor's outer wall, and a buffer pad is placed between the latch and the compressor's outer wall. The bottom of the compressor is fixedly installed on the chassis of the outdoor unit. This fixing device achieves multi-point fixing of the compressor, reducing compressor vibration. However, this compressor fixing device occupies a large space, affecting the routing of the intake and exhaust pipes, and its structure is too simple, only effectively reducing compressor vibration at a fixed frequency.

[0005] Patent publication number CN 218915162 U discloses an elastic band, a compressor fixing device, and an air conditioner. The elastic band includes a main body and fixing heads at both ends of the main body. After the air conditioner compressor is installed inside its outdoor unit housing, when the main body is in a stretched state, the main body can encircle the compressor, and the fixing heads can be fixedly connected to the vertical plate of the outdoor unit housing to confine the compressor between the main body and the vertical plate. However, this elastic band can only provide a fixed elastic model and can only provide vibration damping in the direction away from the vertical plate, failing to provide good vibration damping across the entire frequency range of the variable frequency compressor. Summary of the Invention

[0006] Therefore, the present invention provides a compressor vibration damping fixing device, a parking air conditioner and a control method, which can solve the technical problem that the compressor fixing device in the prior art cannot change its stiffness with the compressor operating frequency and has a limited vibration damping effect on the compressor.

[0007] To address the aforementioned problems, the present invention provides a compressor vibration damping and fixing device, including a bottom vibration damping and fixing assembly supported on the bottom wall of the compressor, and a side wall vibration damping and fixing assembly, wherein the side wall vibration damping and fixing assembly includes:

[0008] An air spring assembly includes an air spring and an air pump controllably connected to an air chamber of the air spring. The air pump is capable of inflating the air chamber or venting air from the air chamber to the outside according to the real-time operating frequency of the compressor to adjust the stiffness of the air spring.

[0009] A first connecting structure, one end of which is connected to the first end of the air spring assembly, and the other end of which is connected to the outer vertical wall of the compressor.

[0010] The second connection structure has one end connected to the second end of the air spring assembly, and the other end connected to the outdoor unit housing of the air conditioner.

[0011] In some implementations...

[0012] The first connection structure includes a first support rod, one end of which is connected to an arc plate. The arc shape of the arc plate matches the arc shape of the outer vertical wall of the compressor. The arc plate is fixedly connected to the outer vertical wall. The air spring assembly also includes a first washer connected to its first end. The other end of the first support rod is fixedly connected to the first washer.

[0013] In some implementations...

[0014] The second connection structure includes a second support rod, one end of which is detachably connected to the outer casing via a clamping connection assembly. The air spring assembly also includes a second washer connected to its second end, and the other end of the second support rod is connected to the second washer.

[0015] In some implementations...

[0016] The second support rod is a threaded rod, and the second support rod is threadedly connected to the second washer; and / or, the second support rod is coaxially arranged with the first support rod.

[0017] In some implementations...

[0018] The second gasket includes a gasket body and a threaded portion thereon, wherein the thickness of the threaded portion is greater than the thickness of the gasket body in the axial direction of the second support rod.

[0019] In some implementations...

[0020] The clamping connection assembly includes a rotating nut fixedly connected to the second support rod and a locking nut threadedly connected to the second support rod. When the second connection structure is connected to the outer casing, the rotating nut and the locking nut are respectively located on the inner and outer sides of the outer casing.

[0021] In some implementations...

[0022] The air spring has a ring-shaped hollow structure. The first washer and the second washer are respectively connected to the two ends of the central through hole of the ring-shaped hollow structure. An elastic element is also provided in the central through hole, which is used to bear the axial pressure of the air spring.

[0023] In some implementations...

[0024] The elastic element is a helical spring, which is fitted onto the outside of the second support rod.

[0025] In some implementations...

[0026] The air pump can also pressurize the air chamber or exhaust air from the air chamber to adjust the stiffness of the air spring to a preset driving stiffness according to the PSD load spectrum of the road on which the compressor is installed.

[0027] The present invention also provides a parking air conditioner, including the above-mentioned compressor vibration damping and fixing device.

[0028] The present invention also provides a method for controlling a parking air conditioner as described above, comprising the following steps:

[0029] The operating status of the compressor is obtained, including a first state and a second state. When the compressor is in the first state, the compressor is in a state where the vehicle is parked and the compressor is running. When the compressor is in the second state, the compressor is in a state where the vehicle is moving and the compressor is stopped.

[0030] Based on the operating status of the compressor, the air pump is controlled to either fill the air chamber with air or exhaust air from the air chamber to adjust the stiffness of the air spring.

[0031] In some implementations...

[0032] When the compressor is in its first operating state, the real-time operating frequency of the compressor is acquired, and the gas pressure in the gas chamber is increased or decreased, so that the gas pressure in the gas chamber reaches a first target pressure corresponding to the real-time operating frequency; or,

[0033] When the compressor is in the second operating state, the air pressure in the air chamber is adjusted so that the pressure of the gas in the air chamber reaches the second target pressure corresponding to the preset vehicle stiffness.

[0034] In some implementations, the first target pressure is obtained in the following manner:

[0035] The compressor is fixed inside the outdoor unit of the parking air conditioner using the aforementioned compressor vibration damping and fixing device;

[0036] The compressor was run to perform vibration testing on the external unit.

[0037] Obtain the average vibration response of the compressor intake and exhaust port pipes at different compressor operating frequencies;

[0038] With the goal of minimizing the average vibration response of the compressor's intake and exhaust port connectors, the gas pressure within the gas chamber is adjusted at each compressor operating frequency, and the gas pressure corresponding to the minimum average vibration response of the compressor's intake and exhaust port connectors is recorded as the first target pressure; or...

[0039] The second target pressure is obtained in the following way:

[0040] A simulation model was established for the compressor vibration damping and fixing device;

[0041] Random vibration analysis was performed on the established simulation model based on the PSD load spectrum of the vehicle operating road.

[0042] With the goal of minimizing the average vibration response of the compressor's intake and exhaust port connectors, the gas pressure in the gas chamber is adjusted and the gas pressure corresponding to the minimum average vibration response of the compressor's intake and exhaust port connectors is recorded as the second target pressure.

[0043] The present invention provides a compressor vibration damping and fixing device, a parking air conditioner and a control method, which have the following beneficial effects:

[0044] The bottom vibration damping fixing component and the side wall vibration damping fixing component work together to achieve vibration damping support and fixation of the compressor. The side wall vibration damping fixing component uses an air spring, and the stiffness of the air spring can be adjusted according to the real-time operating frequency of the compressor under the charging and discharging action of the air pump. This makes the vibration damping support effect of the compressor vibration damping fixing device of the present invention better and effectively prevents damage caused by excessive stress at the compressor's intake and exhaust port connection points.

[0045] The stiffness of the air spring can be adjusted according to the compressor's operating status, so that the compressor's vibration reduction effect is at a better level whether it is in the first or second state. As a result, the average vibration response of the compressor's intake and exhaust port pipes is at a lower level, effectively preventing damage to the pipes. Attached Figure Description

[0046] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0047] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0048] Figure 1 This is a three-dimensional structural diagram of the compressor vibration damping and fixing device assembled in the parking air conditioner according to an embodiment of the present invention (some parts are omitted);

[0049] Figure 2 for Figure 1 A three-dimensional structural diagram of the sidewall vibration damping and fixing components from a certain perspective;

[0050] Figure 3 for Figure 1 A three-dimensional structural diagram of the sidewall vibration damping and fixing components from another perspective;

[0051] Figure 4 for Figure 1 Exploded view of the sidewall vibration damping and fixing components;

[0052] Figure 5 for Figure 1 Cross-sectional view of the sidewall vibration damping and fixing assembly;

[0053] Figure 6 This is a control logic flowchart of a parking air conditioner according to an embodiment of the present invention;

[0054] Figure 7 This is a schematic diagram of the process for obtaining the target pressure inside the air chamber of the air spring in an embodiment of the present invention.

[0055] The reference numerals in the attached figures are as follows:

[0056] 11. Air spring; 12. Air pump; 13. First washer; 14. Second washer; 141. Threaded connection; 15. Controller;

[0057] 21. First support rod; 22. Arc plate;

[0058] 31. Second support rod; 32. Rotary nut; 33. Locking nut; 34. Anti-loosening washer;

[0059] 4. Elastic components;

[0060] 100. Compressor; 101. Outdoor unit casing;

[0061] 200. Bottom vibration damping and fixing assembly; 300. Side wall vibration damping and fixing assembly. Detailed Implementation

[0062] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. 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.

[0063] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0064] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0065] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0066] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not 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 on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0067] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0068] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0069] See also Figure 1and Figure 7 As shown in the figure, according to an embodiment of the present invention, a compressor vibration damping and fixing device is provided, including a bottom vibration damping and fixing assembly 200 supported on the bottom wall of a compressor 100, and a side wall vibration damping and fixing assembly 300. The side wall vibration damping and fixing assembly 300 includes: an air spring assembly (not labeled in the figure), including an air spring 11 and an air pump 12 controllably communicating with the air chamber of the air spring 11. The air pump 12 can adjust the stiffness of the air spring 11 by inflating the air chamber or venting air from the air chamber according to the real-time operating frequency of the compressor 100; a first connecting structure, one end of the first connecting structure being connected to the first end of the air spring assembly, and the other end of the first connecting structure being connected to the outer vertical wall of the compressor 100; and a second connecting structure, one end of the second connecting structure being connected to the second end of the air spring assembly, and the other end of the second connecting structure being connected to the outdoor unit housing 101 of the air conditioner. The aforementioned bottom vibration damping and fixing component 200 can be implemented using multiple sets of rubber vibration damping pads of the same model. While providing fixed support for the compressor 100 above, it can also reduce vibration transmission between the compressor 100 and the mounting carrier. The aforementioned air pump 12 is preferably a commercially available bidirectional micro air pump, and its operation (i.e., intake and exhaust) can be controlled by a matching controller 15. Of course, its control can also be integrated into the parking air conditioning control system; this invention does not provide special protection for it.

[0070] In this technical solution, the bottom vibration damping fixing component 200 and the side wall vibration damping fixing component 300 together achieve vibration damping support and fixing of the compressor 100. The side wall vibration damping fixing component 300 adopts an air spring 11, and the stiffness of the air spring 11 can be adjusted according to the real-time operating frequency of the compressor 100 under the charging and discharging action of the air pump 12. This makes the vibration damping support effect of the compressor vibration damping fixing device of the present invention better and effectively prevents damage caused by excessive stress at the suction and discharge port connection of the compressor 100.

[0071] See also Figures 2 to 5As shown, in some embodiments, the first connecting structure includes a first support rod 21, one end of which is connected to an arc plate 22. The arc shape of the arc plate 22 matches the arc shape of the outer wall of the compressor 100. That is, the radius of curvature of the mating surfaces of the arc plate 22 and the outer wall of the compressor 100 are the same to ensure a perfect fit. The arc plate 22 is fixedly connected to the outer wall. The aforementioned fixed connection can be, for example, welding. In some small-scale applications, the arc plate 22 and the outer wall of the compressor can also be fixedly connected by adhesive. The air spring assembly also includes a first gasket 13 connected (e.g., glued) to its first end. The other end of the first support rod 21 is fixedly connected to the first gasket 13. In one specific embodiment, the first support rod 21 and the first gasket 13 are welded together. In another feasible embodiment, the arc plate 22 and the first support rod 21 are integrally formed, and more preferably, they are welded together by assembly.

[0072] In this technical solution, the arc plate 22 has a larger contact area with the outer wall of the compressor 100 compared to the direct connection of the first support rod 21. This makes the connection between the first connection structure and the compressor 100 more reliable and stable, and the vibration reduction effect can also be improved to a certain extent.

[0073] See also Figure 3 As shown, in some embodiments, the second connection structure includes a second support rod 31, one end of which is detachably connected to the outdoor housing 101 via a clamping connection assembly (not labeled in the figure). The air spring assembly also includes a second gasket 14 connected (e.g., glued) to its second end, and the other end of the second support rod 31 is connected to the second gasket 14.

[0074] In this technical solution, the second support rod 31 is detachably connected to the outdoor unit housing 101 by a clamping connection assembly, which facilitates the assembly of the vibration damping fixing device in the parking air conditioner.

[0075] In a preferred embodiment, the second support rod 31 is a threaded rod, and the second support rod 31 is threadedly connected to the second gasket 14. Through the threaded connection between the second support rod 31 and the second gasket 14, the distance between different compressors 100 and the outdoor housing 101 can be adjusted by screwing them in and out, thus enriching the applicable scenarios of the vibration damping fixing device.

[0076] In a preferred embodiment, the second support rod 31 is coaxially arranged with the first support rod 21.

[0077] In this technical solution, it is understood that the aforementioned first support rod 21, second support rod 31, and air spring 11 are coaxially arranged, which has a better vibration reduction effect.

[0078] In some embodiments, the second gasket 14 includes a gasket body (not labeled) and a threaded portion 141 thereon, wherein the thickness of the threaded portion 141 is greater than the thickness of the gasket body in the axial direction of the second support rod 31.

[0079] The aforementioned threaded portion 141 can be a component integrally formed with the second washer 14, or it can be a separate nut that is welded to the second washer 14. Preferably, where cost allows, the threaded portion 141 and the washer body are integrally formed, which has higher connection strength.

[0080] In this technical solution, the thread engagement depth between the second washer 14 and the second support rod 31 can be increased through the screw connection 141, thereby making the threaded connection between the second support rod 31 and the second washer 14 more stable and reliable.

[0081] In some implementation methods, see details. Figure 3 As shown, the clamping connection assembly includes a rotating nut 32 fixedly connected to the second support rod 31 and a locking nut 33 threadedly connected to the second support rod 31. When the second connection structure is connected to the outer casing 101, the rotating nut 32 and the locking nut 33 are respectively located on the inner and outer sides of the outer casing 101. In a specific embodiment, the aforementioned rotating nut 32 is welded to the second support rod 31.

[0082] In this technical solution, the aforementioned rotating nut 32 is fixedly connected to the second support rod 31. When it is necessary to adjust the distance between the compressor 100 and the outdoor housing 101, the rotating nut 32 is screwed on, thereby driving the relative position between the second support rod 31 and the second washer 14. Furthermore, the rotating nut 32, together with the locking nut 33, forms a clamping and fixing mechanism for the outdoor housing 101, which obviously simplifies the structural design of the second connection structure. In some cases, a loosening washer 34 can also be provided between the rotating nut 32 and the locking nut 33, making the connection of the clamping assembly more reliable and stable.

[0083] See Figure 5 As shown, in some embodiments, the air spring 11 is an annular hollow structure, and the first gasket 13 and the second gasket 14 are respectively connected to the two ends of the central through hole of the annular hollow structure. An elastic element 4 is also provided in the central through hole, and the elastic element 4 is used to bear the axial pressure of the air spring 11.

[0084] In this technical solution, the elastic element 4 is disposed between the first connecting structure and the second connecting structure, which can apply a repulsive force (the rebound force after compression) between the first connecting structure and the second connecting structure, thereby improving the lower limit of the support capacity of the side wall vibration damping fixing assembly 300, especially when the air pump 12 is abnormal (or cannot operate), it can provide basic vibration damping capacity.

[0085] Specifically, the elastic element 4 is a helical spring, which is fitted onto the outside of the second support rod 31.

[0086] In this technical solution, the aforementioned helical spring is fitted onto the second support rod 31 with a certain gap between them. In this way, the second support rod 31 can restrict the deformation direction of the helical spring, prevent the helical spring from bending, and ensure the axial output effect.

[0087] In another preferred embodiment, the air pump 12 can also pressurize the air chamber or exhaust air from the air chamber according to the power spectral density (PSD) of the vehicle on which the compressor 100 is installed, thereby adjusting the stiffness of the air spring 11 to a preset driving stiffness. The aforementioned power spectral density is specifically defined by corresponding road standards, meaning it corresponds to a specific region with a relatively standard load excitation. The purpose of this invention is to obtain this existing power spectral density to simulate the comprehensive excitation exerted by the road load on the compressor 100 during vehicle operation, thereby obtaining the target pressure of the gas in the air chamber of the air spring 11 (i.e., the second target pressure described below), and then using this target pressure to make the stiffness of the air spring 11 the preset driving stiffness. It is understood that this preset driving stiffness can minimize the vibration stress at the intake and exhaust port connections of the compressor 100 when it is not in operation and during vehicle operation, thereby preventing damage to the connections.

[0088] According to an embodiment of the present invention, a parking air conditioner is also provided, including the above-described compressor vibration damping and fixing device.

[0089] The compressor vibration damping and fixing device employs a bottom vibration damping and fixing component 200 and a side wall vibration damping and fixing component 300 together to achieve vibration damping support and fixing of the compressor 100. The side wall vibration damping and fixing component 300 uses an air spring 11, and the stiffness of this air spring 11 can be adjusted according to the real-time operating frequency of the compressor 100 under the charging and discharging action of the air pump 12. This results in a superior vibration damping and supporting effect of the compressor vibration damping and fixing device, effectively preventing damage caused by excessive stress at the suction and discharge port connections of the compressor 100.

[0090] According to an embodiment of the present invention, in conjunction with [see also...] Figure 6 and Figure 7 As shown, a method for controlling a parking air conditioner as described above is also provided, comprising the following steps:

[0091] The operating status of the compressor 100 is obtained. The operating status includes a first status and a second status. When the compressor 100 is in the first status, the compressor 100 is in a state where the vehicle is parked and the compressor is running. When the compressor 100 is in the second status, the compressor 100 is in a state where the vehicle is moving and the compressor is stopped.

[0092] According to the operating status of the compressor 100, the air pump 12 is controlled to fill the air chamber with air or exhaust air from the air chamber to adjust the stiffness of the air spring 11. It is understood that during the operation of the vehicle, i.e. during driving, the temperature control needs in the driver's cabin are provided by the original vehicle air conditioner (whose power comes from the vehicle's engine). Therefore, during this process, the parking air conditioner is stopped and does not operate.

[0093] In this technical solution, the stiffness of the air spring 11 can be adjusted according to the operating state of the compressor 100, so that the vibration reduction effect of the compressor 100 is at a better level regardless of whether it is in the first state or the second state. As a result, the average vibration response of the compressor 100's intake and exhaust port pipes is at a lower level, effectively preventing damage to the pipes.

[0094] In some embodiments, when the compressor 100 is in a first operating state, the real-time operating frequency of the compressor 100 is acquired, and the air pressure in the air chamber is increased or decreased, so that the pressure of the gas in the air chamber reaches a first target pressure corresponding to the real-time operating frequency; or, when the compressor 100 is in a second operating state, the air pressure in the air chamber is adjusted, so that the pressure of the gas in the air chamber reaches a second target pressure corresponding to a preset vehicle stiffness.

[0095] Specifically, the first target pressure is obtained in the following manner:

[0096] The compressor 100 is fixed inside the parking air conditioner outdoor unit using the aforementioned compressor vibration damping and fixing device; the compressor is run to perform a vibration test on the outdoor unit; the average vibration response values ​​of the compressor intake and exhaust port pipes are obtained at different compressor operating frequencies; with the goal of minimizing the average vibration response value of the compressor intake and exhaust port pipes, the gas pressure in the air chamber is adjusted at each compressor operating frequency, and the gas pressure corresponding to the minimum average vibration response value of the compressor intake and exhaust port pipes is recorded as the first target pressure; or...

[0097] The second target pressure is obtained as follows: a simulation model is established for the compressor vibration damping and fixing device; random vibration analysis is performed on the established simulation model based on the PSD load spectrum of the vehicle running road; the gas pressure in the air chamber is adjusted with the minimum mean vibration response of the compressor intake and exhaust port pipes as the target, and the gas pressure corresponding to the minimum mean vibration response of the compressor intake and exhaust port pipes is recorded as the second target pressure.

[0098] The specific control method of the present invention will be further described below with reference to a specific embodiment.

[0099] First, see Figure 7 As shown, when the parking air conditioning compressor (i.e., the aforementioned compressor 100, hereinafter the same) stops working (i.e., the truck is running on the road), a simulation model of the compressor-fixed device system is established. Based on the PSD spectrum (i.e., the aforementioned road PSD load spectrum, hereinafter the same) of the truck (i.e., the aforementioned road PSD load spectrum, hereinafter the same), random vibration analysis of the compressor-fixed device system is performed. Using the stiffness of the fixed device as a variable, and minimizing the mean vibration response of the compressor's intake and exhaust ports as the optimization objective, the optimal pressure inside the fixed device when the truck is running is obtained. When the parking air conditioning compressor is working, vibration tests are performed on the outdoor unit of the parking air conditioning system. The mean vibration response of the compressor's intake and exhaust ports is tested at different compressor operating frequencies. With minimizing the mean vibration response of the compressor's intake and exhaust ports as the objective, the pressure inside the compressor's fixed device is adjusted to obtain a dataset of the pressure inside the compressor's fixed device at different compressor operating frequencies. Integrating the data from the compressor's fixed device when the parking air conditioning is stopped and working yields the complete dataset for this control method.

[0100] The compressor mounting device is installed between the compressor requiring vibration reduction and the outdoor unit stand (i.e., the aforementioned outdoor unit housing 101, hereinafter the same). The adjusting screw (i.e., the second support rod 31 mentioned above, hereinafter the same) can be adapted to different distances between the compressor and the outdoor unit stand. After installation, when the compressor runs at different frequencies, the controller 15 will automatically control the air pump 12 to extract or inject gas to achieve the pressure value of the data for the frequency, so as to achieve a better vibration reduction and noise reduction effect on the parking air conditioning compressor at different operating frequencies.

[0101] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor vibration damping and fixing device, comprising a bottom vibration damping and fixing assembly (200) supported on the bottom wall of a compressor (100), characterized in that, It also includes a sidewall vibration damping fixing assembly (300), which includes: An air spring assembly includes an air spring (11) and an air pump (12) controllably connected to the air chamber of the air spring (11). The air pump (12) is capable of filling the air chamber with air or exhausting air from the air chamber to adjust the stiffness of the air spring (11) according to the real-time operating frequency of the compressor (100). A first connecting structure, one end of which is connected to the first end of the air spring assembly, and the other end of which is connected to the outer wall of the compressor (100). The second connection structure has one end connected to the second end of the air spring assembly and the other end connected to the outdoor unit housing (101) of the air conditioner. The second connection structure includes a second support rod (31), one end of which is detachably connected to the outer casing (101) via a clamping connection assembly. The clamping connection assembly includes a rotating nut (32) fixedly connected to the second support rod (31) and a locking nut (33) threadedly connected to the second support rod (31). When the second connection structure is connected to the outer casing (101), the rotating nut (32) and the locking nut (33) are respectively located on the inner and outer sides of the outer casing (101).

2. The compressor vibration damping and fixing device according to claim 1, characterized in that, The first connection structure includes a first support rod (21), one end of which is connected to an arc plate (22). The arc shape of the arc plate (22) matches the arc shape of the outer wall of the compressor (100). The arc plate (22) is fixedly connected to the outer wall. The air spring assembly also includes a first gasket (13) connected to its first end. The other end of the first support rod (21) is fixedly connected to the first gasket (13).

3. The compressor vibration damping and fixing device according to claim 2, characterized in that, The air spring assembly also includes a second washer (14) connected to its second end, and the other end of the second support rod (31) is connected to the second washer (14).

4. The compressor vibration damping and fixing device according to claim 3, characterized in that, The second support rod (31) is a threaded rod, and the second support rod (31) is threadedly connected to the second washer (14); and / or, the second support rod (31) is coaxially arranged with the first support rod (21).

5. The compressor vibration damping and fixing device according to claim 4, characterized in that, The second gasket (14) includes a gasket body and a threaded portion (141) thereon, wherein the thickness of the threaded portion (141) is greater than the thickness of the gasket body in the axial direction of the second support rod (31).

6. The compressor vibration damping and fixing device according to claim 3, characterized in that, The air spring (11) is a ring-shaped hollow structure. The first gasket (13) and the second gasket (14) are respectively connected to the two ends of the central through hole of the ring-shaped hollow structure. An elastic element (4) is also provided in the central through hole. The elastic element (4) is used to bear the axial pressure of the air spring (11).

7. The compressor vibration damping and fixing device according to claim 6, characterized in that, The elastic element (4) is a helical spring, which is fitted onto the outside of the second support rod (31).

8. The compressor vibration damping and fixing device according to claim 1, characterized in that, The air pump (12) can also pressurize the air chamber or exhaust air from the air chamber to adjust the stiffness of the air spring (11) to a preset driving stiffness according to the PSD load spectrum of the vehicle on which the compressor (100) is installed.

9. A parking air conditioner, characterized in that, The compressor vibration damping and fixing device includes any one of claims 1 to 8.

10. A control method for a parking air conditioner as described in claim 9, characterized in that, Includes the following steps: The operating status of the compressor (100) is obtained. The operating status includes a first status and a second status. When the compressor (100) is in the first status, the compressor (100) is in a vehicle parked and compressor running status. When the compressor (100) is in the second status, the compressor (100) is in a vehicle moving and compressor stopped status. According to the operating status of the compressor (100), the air pump (12) is controlled to fill the air chamber with air or exhaust air from the air chamber to adjust the stiffness of the air spring (11).

11. The control method according to claim 10, characterized in that, When the compressor (100) is in the first operating state, the real-time operating frequency of the compressor (100) is obtained, and the air pressure in the air chamber is increased or decreased, so that the pressure of the gas in the air chamber reaches the first target pressure corresponding to the real-time operating frequency. or, When the compressor (100) is in the second operating state, the air pressure in the air chamber is adjusted so that the pressure of the gas in the air chamber reaches the second target pressure corresponding to the preset driving stiffness.

12. The control method according to claim 11, characterized in that, The first target pressure is obtained in the following way: The compressor (100) is fixed inside the outdoor unit of the parking air conditioner using the compressor vibration damping and fixing device. The compressor was run to perform vibration testing on the external unit. Obtain the average vibration response of the compressor intake and exhaust port pipes at different compressor operating frequencies; With the goal of minimizing the average vibration response of the compressor's intake and exhaust port connectors, the gas pressure within the gas chamber is adjusted at each compressor operating frequency, and the gas pressure corresponding to the minimum average vibration response of the compressor's intake and exhaust port connectors is recorded as the first target pressure; or... The second target pressure is obtained in the following way: A simulation model was established for the compressor vibration damping and fixing device; Random vibration analysis was performed on the established simulation model based on the PSD load spectrum of the vehicle operating road. With the goal of minimizing the average vibration response of the compressor's intake and exhaust port connectors, the gas pressure in the gas chamber is adjusted and the gas pressure corresponding to the minimum average vibration response of the compressor's intake and exhaust port connectors is recorded as the second target pressure.

Images