Device for testing inherent frequency of exhaust coil
By using elastic elements and movable fixing parts in the testing device to simulate the exhaust coil environment, the problem of cumbersome testing operations in the prior art is solved, and efficient and accurate natural frequency testing is achieved, which is applicable to a variety of compressor models.
Patent Information
- Application Number
- CN202422432275.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-09
AI Technical Summary
Existing technologies require assembly with the mechanism and housing when testing the natural frequency of the exhaust coil, which is cumbersome, affects testing efficiency, and is costly. In particular, it is impossible to conduct tests efficiently when there is a lack of readily available mechanisms.
Design a testing device that uses an elastic element between the base plate and the substrate to simulate the actual environment of the exhaust coil by using a movable fixing part, replacing the fixing function of the mechanism and housing, and realizes position adjustment through the sliding groove and sliding part to adapt to different models of exhaust coil size.
It improves the accuracy and efficiency of testing, reduces costs, enhances the applicability of the device, eliminates manual welding steps, and is suitable for various compressor models.
Smart Images
Figure CN223512808U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of refrigeration compressor testing, specifically to a device for testing the natural frequency of an exhaust coil. Background Technology
[0002] During the operation of a refrigeration compressor, the compressed gas is discharged through the exhaust coil. When the excitation frequency generated by the airflow is similar to or the same as the natural frequency of the exhaust coil, resonance occurs. This leads to increased vibration of the exhaust coil and the compressor as a whole, resulting in greater noise. Resonance not only affects the normal operation of the equipment but may also damage the surrounding environment and the equipment itself.
[0003] Currently, testing the natural frequency of an exhaust coil typically requires first fixing the exhaust coil muffler cover to the exhaust chamber with screws, then welding the exhaust coil end to the exhaust pipe of the housing, and after calibrating the position of the exhaust coil, using vibration acquisition equipment and obtaining the rated natural frequency of the coil by tapping.
[0004] However, existing methods for testing the natural frequency of exhaust coils require assembling the exhaust coil with the compressor housing and casing. This necessitates preparing the compressor housing and casing in advance, and then manually welding the exhaust coil to the casing and exhaust pipe, a cumbersome process. Furthermore, due to the large number of compressor and exhaust coil models, if a compressor housing is not readily available, it is necessary to temporarily assemble the compressor before proceeding with subsequent exhaust coil testing, impacting testing efficiency. Summary of the Invention
[0005] The purpose of this invention is to address the problems existing in the prior art by providing a device for testing the natural frequency of an exhaust coil. This device avoids the need for assembly with the mechanism and housing during testing, allowing for quick fixation of the exhaust coil and facilitating the testing of its natural frequency. This improves testing efficiency and saves testing costs.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0007] A device for testing the natural frequency of an exhaust coil includes a base plate, a base body disposed above the base plate, the base plate and the base body being connected by a plurality of movable elastic elements, and a movable first fixing member and a movable second fixing member being disposed on the base body.
[0008] In the above technical solution, by designing several elastic elements between the base plate and the substrate, the actual use environment of the exhaust coil is simulated, which improves the accuracy of the test, avoids the process of assembling the exhaust coil with the mechanism and housing in the existing test, improves the test efficiency, and reduces the test cost.
[0009] By setting the first and second fixing members on the base, the first and second fixing members are used to fix the exhaust coil, replacing the fixing function of the core and housing. At the same time, the first and second fixing members are movable, and when the exhaust coil sizes of different models of compressors are different, the positions of the first and second fixing members can be adjusted to adapt to different exhaust coil sizes, thus improving the applicability of the testing device.
[0010] Furthermore, the base body has several sliding grooves on both its top and bottom surfaces, and the bottom plate also has several sliding grooves on its top surface. The first fixing member, the second fixing member, and the elastic element are slidably connected to the sliding grooves. By sliding the first fixing member, the second fixing member, and the elastic element to the sliding grooves, the positions of the first fixing member, the second fixing member, and the elastic element can be adjusted, facilitating adjustments based on the size and position of the exhaust coil in different compressors.
[0011] Furthermore, the slide groove extends through both the base and the bottom plate along its length. This allows the slide to be detached while providing sufficient adjustment space for the first fixing member, the second fixing member, and the elastic element, thus improving the applicability of the testing device.
[0012] Furthermore, sliding members are provided at the lower ends of the first fixing member, the second fixing member, and both ends of the elastic element. The first fixing member and the second fixing member are connected to the base through the sliding members, and the elastic element is connected to the base and the bottom plate through the sliding members. The sliding members are slidably connected to the base and the bottom plate through the sliding grooves provided on the base and the bottom plate, which facilitates the movement of the first fixing member, the second fixing member, and the elastic element.
[0013] Furthermore, the sliding component includes a sliding plate, on which a slider is connected, and a locking element is provided. By placing the slider within the groove provided on the base plate and the substrate, the first fixing member, the second fixing member, and the elastic element can move. The locking element provided on the sliding plate prevents the first fixing member, the second fixing member, and the elastic element from moving during testing, thus avoiding any impact on testing accuracy.
[0014] Furthermore, the elastic element is a spring, and a connecting post is provided on the slider connected to the elastic element. The connecting post is connected to both ends of the elastic element. The elastic element and the slider are connected through this connection.
[0015] Furthermore, the upper end of the first fixing member is provided with a connection port. One end of the exhaust coil connected to the exhaust chamber is fixed through the connection port.
[0016] Furthermore, a limiting half-pipe is provided at the upper end of the second fixing member. One end of the exhaust coil connecting to the housing exhaust pipe is fixed by the limiting half-pipe.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. By designing several elastic elements between the base plate and the substrate, the actual usage environment of the exhaust coil was simulated, thus improving the accuracy of the test.
[0019] 2. By setting a first fixing member and a second fixing member on the base, the first fixing member and the second fixing member are used to fix the exhaust coil, replacing the fixing function of the core and the housing. At the same time, the first fixing member and the second fixing member can be moved. When the exhaust coil size of different models of compressors is different, the position of the first fixing member and the second fixing member can be adjusted to adapt to different exhaust coil sizes, thus improving the applicability of the testing device.
[0020] 3. By using a sliding groove that runs through the base and bottom plate along its length, the sliding component can be disassembled, while providing sufficient adjustment space for the first fixing component, the second fixing component, and the elastic element, thus improving the applicability of the testing device. Attached Figure Description
[0021] Figure 1 This is a first-view diagram of a device for testing the natural frequency of an exhaust coil according to the present invention.
[0022] Figure 2 This is a second-view diagram of a device for testing the natural frequency of an exhaust coil according to the present invention.
[0023] Figure 3 This is an exploded view showing the installation of the elastic element in a device for testing the natural frequency of an exhaust coil according to this utility model.
[0024] Figure 4 This is a schematic diagram of the working principle of the device for testing the natural frequency of an exhaust coil according to the present invention.
[0025] Figure 5 This is a schematic diagram of the sliding component of a device for testing the natural frequency of an exhaust coil according to the present invention.
[0026] In the diagram: 1. Base plate; 2. Base body; 3. Elastic element; 4. First fixing component; 5. Second fixing component; 6. Slide groove; 7. Connection port; 8. Limiting half tube; 9. First sliding component; 10. Second sliding component; 11. Third sliding component; 12. Fourth sliding component; 13. First connecting post; 14. Second connecting post; 15. Exhaust coil; 16. Slide plate; 17. Slider; 18. Locking component. Detailed Implementation
[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. 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 embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0028] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] The following is combined Figures 1 to 5 The present invention provides a detailed description of a device for testing the natural frequency of an exhaust coil through specific embodiments and application scenarios.
[0031] A device for testing the natural frequency of an exhaust coil includes a base plate 1, a base 2 disposed above the base plate 1, the base plate 1 and the base 2 being connected by a plurality of movable elastic elements 3, and a movable first fixing member 4 and a movable second fixing member 5 disposed on the base 2.
[0032] Specifically, such as Figure 1As shown, a base 2 is positioned above the base plate 1, and the base plate 1 and base 2 are connected by four elastic elements 3. Elastic elements are commonly used on the compressor core to reduce compressor vibration. This invention, by incorporating elastic elements 3, can simulate the working environment of the exhaust coil within the compressor, improving the accuracy of natural frequency testing. Furthermore, the elastic elements 3 are movable between the base plate 1 and base 2. Since the exhaust coil and core dimensions differ among different compressor models, adjusting the position of the elastic elements 3 allows for testing the natural frequency of exhaust coils from various compressors, thus improving the accuracy and applicability of the testing device. A first fixing member 4 and a second fixing member 5 are provided on the upper surface of the base 2. Both the first fixing member 4 and the second fixing member 5 can move on the base 2. The first fixing member 4 is used to connect to one end of the exhaust coil 15 that connects to the exhaust chamber, and the second fixing member 5 is used to connect to one end of the exhaust coil 15 that connects to the exhaust pipe of the housing. The first fixing member 4 and the second fixing member 5 replace the mechanism and the housing, avoiding the problem of temporary installation and welding required for the natural frequency testing of the exhaust coil in existing systems, thus improving work efficiency. At the same time, since the manual welding process is eliminated, the cost of welding materials can also be reduced. In addition, by moving the first fixing member 4 and the second fixing member 5 to adjust their positions, it can accommodate exhaust coils of different sizes, improving the applicability of the testing device of this utility model.
[0033] Furthermore, such as Figures 1 to 3 As shown, several grooves 6 are provided on both the top and bottom of the base 2, and several grooves 6 are also provided on the top of the base plate 1. The openings of the grooves 6 gradually increase in size from top to bottom. Slider blocks 17 are provided at the lower end of the first fixing member 4, the lower end of the second fixing member 5, and both ends of the elastic element 3. The size of the sliders 17 is adapted to the grooves 6, and the sliders 17 are located within the grooves 6. The first fixing member 4, the second fixing member 5, and the elastic element 3 are slidably connected to the grooves 6 through the sliders 17, making it easy for the first fixing member 4, the second fixing member 5, and the elastic element 3 to move. This allows for position adjustment according to different sizes of exhaust coils 15, improving the applicability of the testing device of this utility model.
[0034] Furthermore, such as Figure 1 As shown, the slide 6 penetrates the base 2 and the bottom plate 1 along its length, allowing the first fixing member 4, the second fixing member 5, and the elastic element 3 to slide out of the slide 6 during movement. This enables the first fixing member 4, the second fixing member 5, and the elastic element 3 to be detachable. After sliding out of the slide 6, the first fixing member 4, the second fixing member 5, and the elastic element 3 can be moved to another slide 6 according to the test requirements, thereby adjusting their positions. The operation is simple and convenient, improving the testing efficiency of the device.
[0035] Furthermore, sliding members are provided at the lower ends of the first fixing member 4, the second fixing member 5, and both ends of the elastic element 3. These sliding members include a first sliding member 9, a second sliding member 10, a third sliding member 11, and a fourth sliding member 12. The lower end of the first fixing member 4 is fixedly connected to the first sliding member 9, the lower end of the second fixing member 5 is fixedly connected to the second sliding member 10, the lower end of the elastic element 3 is connected to the third sliding member 11, and the upper end of the elastic element 3 is connected to the fourth sliding member 12. A slider 17 is provided on each of the first sliding member 9, the second sliding member 10, the third sliding member 11, and the fourth sliding member 12. A sliding groove 6 is provided on the base 2 and the bottom plate 1. The slider 17 is slidably connected to the sliding groove 6, allowing the first fixing member 4, the second fixing member 5, and the base 2 to be slidably connected, and the elastic element 3 to the bottom plate 1 and the base 2 to be slidably connected. This facilitates adjustment according to the size and position of the exhaust coil 15 in different compressors, improving the applicability of the testing device of this utility model.
[0036] Furthermore, such as Figure 5 As shown, the sliding component includes a sliding plate 16 and a slider 17, which are fixedly connected. The slider 17 is adapted to the sliding groove 6 provided on the base plate 1 and the substrate 2. A pair of locking members 18 are provided on the sliding plate 16, preferably, the locking members 18 are tightening bolts. When the first fixing member 4, the second fixing member 5 and the elastic element 3 move to the target position, the locking members 18 prevent the sliding component from moving, thus avoiding affecting the accuracy of the test.
[0037] Furthermore, such as Figure 3 As shown, the lower end of the elastic element 3 is connected to a third slider 11, and the upper end is connected to a fourth slider 12. Preferably, the elastic element 3 is a spring. The connecting posts include a first connecting post 13 and a second connecting post 14. The first connecting post 13 is provided on the third slider 11, and the second connecting post 14 is provided on the fourth slider 12. The second connecting post 14 has a cylindrical structure. Several protrusions are evenly arranged on the first connecting post 13. The protrusions can enhance the stability of the connection between the elastic element 3 and the first connecting post 13. By connecting the first connecting post 13 and the second connecting post 14 to the two ends of the elastic element 3 respectively, the connection between the elastic element 3 and the third slider 11 and the fourth slider 12 is realized.
[0038] Furthermore, such as Figure 4 As shown, the upper end of the first fixing member 4 is provided with a connection port 7. Since one end of the exhaust coil 15 connected to the exhaust chamber is connected to an exhaust muffler cover, the diameter of the connection port 7 is compatible with the diameter of the exhaust muffler cover, which facilitates the installation of the exhaust muffler cover. A screw hole corresponding to the screw on the exhaust muffler cover is also provided in the connection port 7 for fixing the exhaust muffler cover, thereby fixing one end of the exhaust coil 15.
[0039] Furthermore, such as Figure 4As shown, the upper end of the second fixing member 5 is provided with a limiting half tube 8, which consists of a pair of limiting plates. Bolts are provided on the limiting plates. After the end of the exhaust coil 15 used to connect to the compressor housing is inserted into the limiting half tube 8, the pair of limiting plates are pressed together by rotating the bolts, thereby fixing the exhaust coil 15.
[0040] When using the testing device of this utility model, the position of the elastic element 3 is first determined according to the testing requirements of different models of compressors, and the third sliding member 11 and the fourth sliding member 12 are fixed by the locking member 18. Then, the positions of the first fixing member 4 and the second fixing member 5 are adjusted according to the size of the exhaust coil 15 to be tested. The two ends of the exhaust coil 15 are connected to the first fixing member 4 and the second fixing member 5 respectively, and then the first fixing member 4 and the second fixing member 5 are fixed to the base 2 by the locking member 18. Finally, the vibration acquisition device is connected to the exhaust coil 15, and the natural frequency of the exhaust coil 15 is obtained in the acquisition device by tapping, thus completing the test.
[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for testing the natural frequency of an exhaust coil, characterized in that, Includes a base plate (1), a base (2) is provided above the base plate (1), the base plate (1) and the base (2) are connected by a number of movable elastic elements (3), and a movable first fixing member (4) and a movable second fixing member (5) are provided on the base (2). The lower end of the first fixing member (4), the lower end of the second fixing member (5), and both ends of the elastic element (3) are provided with sliding members. The first fixing member (4) and the second fixing member (5) are connected to the base (2) through the sliding members. The elastic element (3) is connected to the base (2) and the bottom plate (1) through the sliding members. The sliding members include a sliding plate (16), a slider (17) is connected to the sliding plate (16), and a locking member (18) is provided on the sliding plate (16). The elastic element (3) is a spring. A connecting post is provided on the sliding member connected to the elastic element (3). The connecting post is connected to both ends of the elastic element (3).
2. The apparatus for testing the natural frequency of an exhaust coil according to claim 1, characterized in that, The base (2) has several grooves (6) on both the top and bottom, and the bottom plate (1) also has several grooves (6) on the top. The first fixing member (4), the second fixing member (5) and the elastic element (3) are slidably connected to the grooves (6).
3. The apparatus for testing the natural frequency of an exhaust coil according to claim 2, characterized in that, The groove (6) penetrates the base (2) and the bottom plate (1) along its length.
4. The apparatus for testing the natural frequency of an exhaust coil according to claim 1, characterized in that, The upper end of the first fastener (4) is provided with a connection port (7).
5. The apparatus for testing the natural frequency of an exhaust coil according to claim 1, characterized in that, The upper end of the second fastener is provided with a limiting half tube (8).