A compressor vibration damping device with adjustable height, a control method and an oxygen generator

Abstract

The present invention provides a compressor vibration damping device with adjustable height, a control method and an oxygen generator. The beneficial effects of the present invention are as follows: a vibration damping device using combined mechanical and electromagnetic control is provided. When in a non-working state, the compressor can be fixed to the housing through a matching clamp seat and clamping groove, effectively preventing the compressor from colliding with the housing due to tilting during transportation or movement; when in a working state, the real-time height of the compressor is accurately adjusted and compensated through the cooperation of electromagnetic repulsion force and spring elastic force with a height detector, effectively reducing the vibration amplitude of the compressor, reducing the working noise of the compressor, and at the same time preventing the working vibration of the compressor from being transmitted to the housing to generate resonance noise, greatly improving the user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping device structures, and in particular to a compressor vibration damping device with adjustable height, a control method, and an oxygen generator. Background Art

[0002] Oxygen, as a major component of the atmosphere, is also an essential condition for human survival. Artificially produced oxygen plays a very important role in life and medicine. Usually, the prepared oxygen is stored in steel cylinders by means of cryogenic compression for emergencies, but it is extremely inconvenient to use, unable to be produced and used immediately, and the oxygen in the steel cylinders also has disadvantages such as being easily used up and difficult to control. Therefore, oxygen generators have emerged. However, as the core component of the oxygen generator, the compressor has disadvantages such as large weight, large vibration and noise during operation. How to firmly fix the compressor and prevent the vibration during the operation of the compressor from being transmitted to the oxygen generator body, generating additional noise or even causing damage, is a difficult problem in the design of all oxygen generators.

[0003] Traditional oxygen generators usually design a purely mechanical compressor fixing mechanism: through the combined action of bolts, nuts, soft rubber sleeves and springs, etc., the compressor is suspended on the spring, and the vibration of the compressor is buffered by the spring. In order to ensure the effect of buffering the vibration of the compressor, the spring is often designed to be relatively soft and have a long stroke, resulting in a very high suspension height of the compressor. This makes it easy for the compressor to tilt and collide with the oxygen generator housing during use and transportation, generating a lot of noise, even damaging the compressor or the oxygen generator, and posing a safety risk. For this reason, oxygen generator manufacturers fix the compressor to the oxygen generator housing with plastic cable ties at the time of factory shipment to solve the problem of the compressor being bumped during transportation. However, this increases the complexity of the production process, increases the working hours and labor costs, and the plastic cable ties must be cut and removed when the oxygen generator is used for the first time. The problem of tilting of the oxygen generator during use and subsequent movement still exists. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: aiming at the deficiencies of the prior art, to provide a vibration damping device, a control method, and an oxygen generator with a fixing function, which have reasonable structures and high reliability.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is as follows: A compressor vibration damping device with adjustable height, comprising a support base, a support bolt, an elastic member, an electromagnet, a height detector, and a control board. The height detector, the support base, and the electromagnet are sequentially arranged on the housing from bottom to top. The support base is provided with a card slot, and the bottom of the card slot is provided with a through hole penetrating the support base. The electromagnet is provided with an electromagnet through hole. The support bolt sequentially passes through the through hole of the support base and the through hole of the electromagnet. The support bolt is provided with a card holder corresponding to the card slot, and the outer shape of the card holder is adapted to the card slot. The top of the support bolt is connected with a compressor mounting base, and a magnet is provided at the bottom of the compressor mounting base. The elastic member is arranged between the electromagnet and the magnet. The control board is fixed on the housing, and the control board is respectively connected with the electromagnet and the height detector.

[0006] The height detector is used to detect the height of the support bolt;

[0007] The control board is used to change the output power of the electromagnet according to the height of the support bolt.

[0008] Further, when the electromagnet is not energized, the card holder of the support bolt is inserted into the card slot of the support base under the action of gravity; when the electromagnet is energized, the card holder of the support bolt leaves the card slot of the support base under the repulsive force between the electromagnet and the magnet.

[0009] Further, it further comprises an electromagnet bracket, the electromagnet bracket is arranged above the support base, and the electromagnet is fixed on the electromagnet bracket.

[0010] Further, the elastic member is a spring, and the spring is sleeved on the support bolt.

[0011] Further, the card slot of the support base is in an inverted frustum shape.

[0012] Further, an anti - detachment ring is provided at the bottom of the support bolt.

[0013] Further, the height detector is an infrared ranging sensor.

[0014] Further, the electromagnet is provided with an electromagnet spring groove, and the magnet is correspondingly provided with a magnet spring groove. One end of the spring abuts against the electromagnet spring groove, and the other end of the spring abuts against the magnet spring groove.

[0015] The present invention also relates to a method for controlling the vibration damping of a compressor with adjustable height, comprising:

[0016] S1. Obtain the current height H2 of the compressor;

[0017] S2. Compare the current height H2 with the preset height H0. If H2 < H0, proceed to step S3; if H2 > H0, then proceed to step S4;

[0018] S3. Reduce the output current of the electromagnet and return to step S1;

[0019] S4. Increase the output current of the electromagnet and return to step S1.

[0020] The present invention also relates to an oxygen generator, comprising a compressor and a compressor vibration damping device with adjustable height as described in any one of the above, and the compressor is fixedly connected to the mounting base.

[0021] The beneficial effects of the present invention are as follows: A vibration damping device using electromagnetic and mechanical combined control is provided. When in a non-working state, the compressor can be fixed to the housing through a matching card seat and card slot, effectively preventing the compressor from colliding with the housing due to tilting during transportation or movement; when in a working state, through the cooperation of electromagnetic repulsion force and spring elasticity and the height detector, the real-time height of the compressor is accurately adjusted and compensated, effectively reducing the vibration amplitude of the compressor, reducing the working noise of the compressor, and at the same time preventing the working vibration of the compressor from being transmitted to the housing to generate resonance noise, greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following details the specific structure of the present invention with reference to the drawings:

[0023] Figure 1 is a schematic structural diagram of the compressor vibration damping device of the present invention;

[0024] Figure 2 is a schematic diagram of the state of the compressor vibration damping device of the present invention when not working;

[0025] Figure 3 is a schematic diagram of the state of the compressor vibration damping device of the present invention when working;

[0026] 100 - housing;

[0027] 110 - support base; 111 - card slot;

[0028] 120 - support bolt; 121 - card seat; 122 - anti - detachment ring;

[0029] 130 - spring; 140 - electromagnet; 150 - height detector; 160 - control board; 170 - electromagnet frame; 180 - compressor mounting base; 190 - magnet;

[0030] 200 - compressor; 210 - feet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, 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", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0034] In the present invention, unless otherwise clearly defined and limited, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0036] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0037] Embodiment 1

[0038] Please refer to Figures 1 to 3 , a compressor vibration damping device with adjustable height, including a support base 110, a support bolt 120, an elastic member, an electromagnet 140, a height detector 150, and a control board 160. The height detector 150, the support base 110, and the electromagnet 140 are sequentially arranged on the housing 100 from bottom to top. It further includes an electromagnet bracket 170, which is arranged above the support base 110. The electromagnet 140 is fixed on the electromagnet bracket 170. The height detector 150 is arranged on the housing 100 corresponding to the bottom of the support bolt 120. Specifically, the height detector 5 is an infrared ranging sensor, which can ensure the accuracy of height detection. Similarly, the height detector 150 can also be an ultrasonic distance detector.

[0039] The support base 110 is provided with a card slot 111. The bottom of the card slot 111 is provided with a through hole 1 penetrating the support base. The electromagnet 140 is provided with an electromagnet through hole. The support bolt 120 sequentially passes through the through hole of the support base and the electromagnet through hole. The support bolt 120 is provided with a card seat 121 corresponding to the card slot 111. The outer shape of the card seat 121 is adapted to the card slot 111. Specifically, the card slot 111 of the support base 110 is in the shape of an inverted frustum, and the card seat 121 is also in the shape of an adapted inverted frustum, so that when the electromagnet 140 loses power supply, the card seat 121 can easily fall into the card slot 111 to realize the relative fixation of the support bolt 120 and the housing 100.

[0040] When the electromagnet 140 is not energized, the card seat 121 of the support bolt 120 is inserted into the card slot 111 of the support base 110 under the action of gravity; when the electromagnet 140 is energized, the card seat 121 of the support bolt 120 leaves the card slot 111 of the support base under the repulsive force between the electromagnet 140 and the magnet 190.

[0041] The bottom of the support bolt 120 is provided with an anti - detachment ring 122, which can effectively prevent the support bolt 120 from falling off the support seat 110. At the same time, it provides a larger detection area for the height detector 150, increasing the accuracy and reliability of the detection data.

[0042] The top of the support bolt 120 is connected to a compressor mounting seat 180. The bottom of the compressor mounting seat 180 is provided with a magnet 190. The elastic member is arranged between the electromagnet 140 and the magnet 190. Preferably, the elastic member is a spring 130, and the spring is sleeved on the support bolt 120. To ensure that the spring can stably provide elastic force, the electromagnet 140 is provided with an electromagnet spring groove, and the magnet 190 is correspondingly provided with a magnet spring groove. One end of the spring 130 abuts against the electromagnet spring groove, and the other end of the spring 130 abuts against the magnet spring groove. In this way, the lateral displacement of the spring 130 can be restricted, ensuring that the spring 130 can reliably provide elastic force. Similarly, sleeving one end of the spring 130 on the electromagnet 140 and the other end of the spring 130 on the magnet 190 can achieve the same effect.

[0043] The control board 160 is fixed on the housing. The control board 160 is respectively connected to the electromagnet 140 and the height detector 150. The height detector 150 is used to detect the height of the support bolt 120; the control board 160 is used to change the output current to the electromagnet 140 according to the height of the support bolt 120.

[0044] When the oxygen generator is powered off or on standby without oxygen production, the control board 160 cuts off the power supply to the electromagnet. The spring contracts under the action of the gravity of the compressor. The compressor moves downward together with the support bolt, and the clamping seat of the support bolt is completely inserted into the clamping groove of the support seat. At this time, the height of the compressor is H1, and the gravity of the compressor = the supporting force of the compressor spring + the supporting force of the support seat. The compressor can maintain a relatively static state and will not tilt or overturn due to the shaking of the whole machine;

[0045] When the oxygen generator is ready to start the compressor for oxygen production, the control board powers on the electromagnet. The control board controls the magnetic pole of the electromagnet by controlling the direction of the current supplied to the electromagnet, so that the upper magnetic pole of the electromagnet is opposite to the lower magnetic pole of the magnet under the mounting seat. For example, the upper magnetic pole of the electromagnet is N / S pole, and the lower magnetic pole of the magnet under the mounting seat is also N / S pole. Using the principle that like - poles of magnets repel each other, a upward acting force is generated on the magnet. Under the action of the compressor spring and the magnetic force, the clamping seat of the support bolt disengages from the clamping groove of the support seat, making the compressor in a suspended state. The height detector measures the current suspended height of the compressor as H0. At this time, the gravity G of the compressor 压 is equal to the repulsive force F between the magnets 磁 and the supporting force F of the spring支撑 The sum, i.e., G 压 = F 磁 + F 支撑 ;

[0046] After the compressor reaches the predetermined height H0, the control board controls the compressor to start sucking air for compression work. The compressor in the floating state will vibrate and drive the mounting seat that fixes the compressor to move, thereby driving the spring to deform, causing the height of the compressor to change continuously. Assume that the height of the compressor at each instant is H2, and this height can be detected by the height detector and converted into an electrical signal. The height detector collects a height data every 20 us. After the electrical signal is processed, it is transmitted to the control board. After receiving the electrical signal, the control board compares the height H2 signal with the preset height H0, and changes the magnitude of the current supplied to the electromagnet according to the comparison result, so as to change the magnetic force of the electromagnet. Among them, the magnetic force of the electromagnet Fmag = B·I·L, where B is the magnetic induction intensity, I is the current intensity, and L is the length of the wire perpendicular to the magnetic induction line.

[0047] Specifically, when the compressor moves upward, the height detector detects that the instantaneous height of the compressor is H2 > H0, then the control board reduces the current supplied to the electromagnet, the repulsive force between the electromagnet and the magnet decreases, the compression amount of the spring decreases, and the supporting force of the spring becomes smaller. At this instant, the gravity G of the compressor 压 > (the repulsive force F between the magnets 磁 + the supporting force F of the spring 支撑 ), thereby slowing down the upward movement trend of the compressor;

[0048] When the compressor moves downward, the height detection device detects that the instantaneous height of the compressor is H2 < H0, then the control board increases the current supplied to the electromagnet, the repulsive force between the electromagnet and the magnet increases, the compression amount of the spring increases, and the supporting force of the spring becomes larger. At this instant, the gravity G of the compressor 压 < (the repulsive force F between the magnets 磁 + the supporting force F of the spring 支撑 ), thereby slowing down the downward movement trend of the compressor.

[0049] By the height detection device to detect the height of the compressor in real time, the control board adjusts the supply current of the electromagnet according to the height data in real time, effectively reducing the deviation value between the real-time vibration height H2 of the compressor and the predetermined height H0, thereby reducing the vibration amplitude generated when the compressor works, and greatly reducing the noise generated by the compressor due to working vibration.

[0050] As can be seen from the above description, the beneficial effects of the present invention are as follows: A vibration damping device using combined mechanical, electromagnetic control is provided. When in a non-working state, the compressor can be fixed to the housing through a matching card seat and card slot, effectively preventing the situation where the compressor collides with the housing due to tilting during transportation or movement; when in a working state, through the cooperation of electromagnetic repulsion force and spring elastic force with the height detector, the real-time height of the compressor is accurately adjusted and compensated, effectively reducing the vibration amplitude of the compressor, reducing the working noise of the compressor, and at the same time preventing the situation where the working vibration of the compressor is transmitted to the housing to generate resonance noise, greatly improving the user experience.

[0051] Embodiment 2

[0052] Based on Embodiment 1, the present invention also relates to a compressor vibration damping control method with adjustable height, including:

[0053] S1. Obtain the current height H2 of the compressor;

[0054] Obtain the distance between the height detector 150 and the bottom of the support bolt 120 through the height detector 150, so as to obtain the current height H2 of the compressor.

[0055] S2. Compare the current height H2 with the preset height H0. If H2 < H0, go to step S3; if H2 > H0, go to step S4;

[0056] After the oxygen generator is ready to start the compressor to generate oxygen, the control board energizes the electromagnet, so that a repulsive force is generated on the side where the electromagnet and the magnet face each other, lifting the compressor, causing the card seat of the support bolt to disengage from the card slot of the support seat, and making the compressor in a suspended state. At this time, the suspended height of the compressor is H0. After entering the height data of H0 into the preset height, the compressor can be started to generate oxygen. The control board controls the compressor to start sucking air for compression work. The floating compressor will vibrate and drive the mounting seat fixing the compressor to move, thereby driving the spring to deform, causing the height of the compressor to change continuously. Assuming that the height of the compressor at each instant is H2, this height can be detected by the height detector and converted into an electrical signal. The height detector collects a height data every 20 us. After the electrical signal is processed, it is transmitted to the control board. After receiving the electrical signal, the control board compares the height H2 signal with the preset height H0. If H2 < H0, go to step S3; if H2 > H0, go to step S4.

[0057] When H2 = H0, the control board does not change the output current of the electromagnet.

[0058] S3. Reduce the output current of the electromagnet and return to step S1;

[0059] Since H2 < H0, the compressor moves downward at this time. Then the current supplied by the control board to the electromagnet increases, the repulsive force between the electromagnet and the magnet increases, and the compression amount of the spring increases, making the supporting force of the spring larger. At this instant, the gravity G of the compressor 压 < (the repulsive force F between the magnets 磁 + the supporting force F of the spring 支撑 ), thereby slowing down the downward movement trend of the compressor.

[0060] S4. Increase the output current of the electromagnet and return to step S1.

[0061] Since H2 > H0, the compressor moves upward at this time. Then the current supplied by the control board to the electromagnet decreases, the repulsive force between the electromagnet and the magnet decreases, and the compression amount of the spring decreases, making the supporting force of the spring smaller. At this instant, the gravity G of the compressor 压 > (the repulsive force F between the magnets 磁 + the supporting force F of the spring 支撑 ), thereby slowing down the upward movement trend of the compressor.

[0062] The height of the compressor is detected in real time by the height detection device, and the control board adjusts the supply current of the electromagnet in real time according to the height data, effectively reducing the deviation value between the real-time vibration height H2 of the compressor and the predetermined height H0, thereby reducing the vibration amplitude generated when the compressor works and greatly reducing the noise generated by the working vibration of the compressor.

[0063] Embodiment 3

[0064] The present invention also relates to an oxygen generator, including a compressor 200 and a compressor vibration damping device with adjustable height as described in the above embodiments, and the compressor 200 is fixedly connected to the compressor mounting seat 180.

[0065] The feet 210 of the compressor 200 are installed on the compressor mounting seat 180. The top end of the support bolt 120 passes through the feet 210 of the compressor, and the feet 210 of the compressor are fixedly connected to the compressor mounting seat 180 through nuts.

[0066] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A compressor vibration damping device with adjustable height, characterized in that: It includes a support base, a support bolt, an elastic member, an electromagnet, a height detector and a control board. The height detector, the support base and the electromagnet are sequentially arranged on the housing from bottom to top. The support base is provided with a card slot, and the bottom of the card slot is provided with a through hole penetrating the support base. The electromagnet is provided with an electromagnet through hole. The support bolt sequentially passes through the through hole of the support base and the electromagnet through hole. The support bolt is provided with a clamping seat corresponding to the card slot, and the outer shape of the clamping seat is adapted to the card slot. The top of the support bolt is connected with a compressor mounting seat, and a magnet is provided at the bottom of the compressor mounting seat. The elastic member is arranged between the electromagnet and the magnet. The control board is fixed on the housing, and the control board is respectively connected with the electromagnet and the height detector. The height detector is used to detect the height of the support bolt. The control board is used to change the output power of the electromagnet according to the height of the support bolt.

2. The compressor vibration damping device with adjustable height according to claim 1, characterized in that: When the electromagnet is not powered on, the clamping seat of the support bolt is inserted into the card slot of the support base under the action of gravity; when the electromagnet is powered on, the clamping seat of the support bolt leaves the card slot of the support base under the repulsive force between the electromagnet and the magnet.

3. The compressor vibration damping device with adjustable height according to claim 2, characterized in that: It further includes an electromagnet bracket, and the electromagnet bracket is arranged above the support base, and the electromagnet is fixed on the electromagnet bracket.

4. The compressor vibration damping device with adjustable height according to claim 3, characterized in that: The elastic member is a spring, and the spring is sleeved on the support bolt.

5. The compressor vibration damping device with adjustable height according to claim 4, characterized in that: The card slot of the support base is in an inverted frustum shape.

6. The compressor vibration damping device with adjustable height according to claim 5, characterized in that: An anti-drop ring is provided at the bottom of the support bolt.

7. The compressor vibration damping device with adjustable height according to claim 6, characterized in that: The height detector is an infrared distance measuring sensor.

8. The compressor vibration damping device with adjustable height according to claim 7, characterized in that: The electromagnet is provided with an electromagnet spring groove, and the magnet is correspondingly provided with a magnet spring groove. One end of the spring abuts against the electromagnet spring groove, and the other end of the spring abuts against the magnet spring groove.

9. A compressor vibration damping control method with adjustable height, characterized in that, For the compressor vibration damping device with adjustable height according to any one of claims 1-8, the control method includes: S1. Obtain the current height H2 of the compressor; S2. Compare the current height H2 with the preset height H0. If H2 < H0, go to step S3; if H2 > H0, go to step S4; S3. Reduce the output current of the electromagnet and return to step S1; S4. Increase the output current of the electromagnet and return to step S1.

10. An oxygen generator, characterized in that: It includes a compressor and the compressor vibration damping device with adjustable height according to any one of claims 1-8, and the compressor is fixedly connected with the mounting seat.

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