An air purifier control system with high-voltage module overcurrent protection

Abstract

The utility model discloses an air purifier control system with overcurrent protection of a high-voltage module, which includes a wireless communication module, a control module, a human-computer interaction touch module, a voltage conversion module, an overcurrent protection module, a high-voltage module and a fan module. The wireless communication module is electrically connected to the control module for information interaction with a mobile phone; the control module is electrically connected to the overcurrent protection module for controlling the overcurrent protection module; the human-computer interaction touch module is electrically connected to the control module for human-computer interaction; the voltage conversion module is electrically connected to the overcurrent protection module for power supply after converting an external voltage; the overcurrent protection module is electrically connected to the high-voltage module for overcurrent protection of the high-voltage module according to the control of the control module; the fan module is electrically connected to the control module for blowing airflow to a target direction. The utility model has the advantages of being easy for users to use and improving the safety of use.

Description

Technical Field

[0001] The utility model relates to the technical field of air purification, in particular to an air purifier control system with overcurrent protection of a high-voltage module. Background Art

[0002] In order to prevent polluted air from being directly inhaled by people, technicians in this field have developed air purifiers, which have entered thousands of households. Especially in the autumn and winter seasons, most families and offices will place humidifiers and air purifiers indoors while turning on air conditioners or heaters to ensure a certain humidity in the environment, prevent the environment from absorbing moisture from the human body, eliminate static electricity, and create fresh air like the forest and the ocean. Air purifiers currently on the market are usually equipped with high-voltage modules. When the high-voltage module is overcurrent, it will affect personal safety. Therefore, the existing air purifiers are low in safety. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a highly safe air purifier control system with overcurrent protection of a high-voltage module.

[0004] The utility model provides an air purifier control system with overcurrent protection of a high-voltage module, comprising a wireless communication module, a control module, a human-computer interaction touch module, a voltage conversion module, an overcurrent protection module, a high-voltage module and a fan module, wherein the wireless communication module is electrically connected to the control module for information interaction with a mobile phone; the control module is electrically connected to the overcurrent protection module for controlling the overcurrent protection module; the human-computer interaction touch module is electrically connected to the control module for human-computer interaction; the voltage conversion module is electrically connected to the overcurrent protection module for converting an external voltage for power supply; the overcurrent protection module is electrically connected to the high-voltage module for overcurrent protection of the high-voltage module according to the control of the control module; the fan module is electrically connected to the control module for blowing airflow in a target direction.

[0005] Preferably, the overcurrent protection module includes a high-voltage connection interface, a current detection unit and a current release unit, the high-voltage connection interface is used to be electrically connected to the high-voltage module; the current detection unit is electrically connected to the high-voltage connection interface and the control module, and is used to detect the current of the high-voltage module; the current release unit is electrically connected to the high-voltage connection interface and the control unit, and is used to release the current of the high-voltage module when overcurrent occurs.

[0006] Preferably, the current detection unit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a comparator, a first photocoupler and a transistor, wherein the first end of the first resistor is electrically connected to the voltage conversion module, and the second end of the first resistor is electrically connected to the first end of the second resistor; the first end of the second resistor is electrically connected to the positive input pin of the comparator, and the second end of the second resistor is grounded; the first end of the third resistor is electrically connected to the first connection pin of the high-voltage connection interface, and the second end of the third resistor is electrically connected to the reverse input pin of the comparator;

[0007] The first end of the fourth resistor is electrically connected to the first end of the first resistor, and the second end of the fourth resistor is electrically connected to the first signal input pin of the first photocoupler; the first end of the fifth resistor is electrically connected to the output pin of the comparator, and the second end of the fifth resistor is electrically connected to the base of the transistor; the emitter of the transistor is electrically connected to the second signal input pin of the first photocoupler, and the collector of the transistor is grounded.

[0008] Preferably, the current detection unit also includes a first capacitor and a sixth resistor, the first end of the first capacitor is electrically connected to the positive input pin of the comparator, and the second end of the first capacitor is grounded; the first end of the second resistor is electrically connected to the positive input pin of the comparator through the sixth resistor.

[0009] Preferably, the current detection unit also includes a second capacitor and a third capacitor, the first end of the second capacitor is electrically connected to the first connection pin of the high-voltage connection interface, and the second end of the second capacitor is electrically connected to the second connection pin of the high-voltage connection interface; the first end of the third capacitor is electrically connected to the reverse input pin of the comparator, and the second end of the third capacitor is grounded.

[0010] Preferably, the current detection unit further includes a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh resistor, a first end of the fourth capacitor is electrically connected to the output pin of the comparator, and a second end of the fourth capacitor is grounded;

[0011] The first end of the fifth capacitor is electrically connected to the first end of the first resistor, and the second end of the fifth capacitor is grounded; the first end of the sixth capacitor is electrically connected to the first end of the seventh resistor, and the second end of the sixth capacitor is grounded; the first end of the seventh resistor is electrically connected to the first end of the fourth resistor, and the second end of the seventh resistor is electrically connected to the output pin of the comparator.

[0012] Preferably, the current detection unit also includes an eighth resistor, a ninth resistor and a tenth resistor, the first end of the eighth resistor is electrically connected to the voltage conversion module, and the second end of the eighth resistor is electrically connected to the first signal output pin of the first photoelectric coupler; the first end of the ninth resistor is electrically connected to the second end of the eighth resistor, and the second end of the ninth resistor is electrically connected to the control module; the first resistor is electrically connected to the voltage conversion module through the tenth resistor, and the second signal output pin of the first photoelectric coupler is grounded.

[0013] Preferably, the current release unit comprises an eleventh resistor, a twelfth resistor, a field effect transistor and a second photoelectric coupler, the first end of the eleventh resistor is electrically connected to the first connection pin of the high-voltage connection interface, and the second end of the eleventh resistor is electrically connected to the source of the field effect transistor;

[0014] The first end of the twelfth resistor is electrically connected to the drain of the field effect tube, and the second end of the twelfth resistor is electrically connected to the gate of the field effect tube; the drain of the field effect tube is electrically connected to the voltage conversion module, and the gate of the field effect tube is electrically connected to the first signal output pin of the second photoelectric coupler, and the second signal output pin of the second photoelectric coupler is grounded; the first signal input pin of the second photoelectric coupler is electrically connected to the control module, and the second signal input pin of the second photoelectric coupler is grounded.

[0015] Preferably, the current release unit further includes a seventh capacitor, a first end of the seventh capacitor is electrically connected to the source of the field effect transistor, and a second end of the seventh capacitor is electrically connected to the drain of the field effect transistor.

[0016] Preferably, the current release unit also includes a thirteenth resistor and a fourteenth resistor, the first end of the thirteenth resistor is electrically connected to the first signal input pin of the second photoelectric coupler, and the second end of the thirteenth resistor is electrically connected to the control module; the first end of the fourteenth resistor is electrically connected to the first end of the thirteenth resistor, and the second end of the fourteenth resistor is grounded.

[0017] The utility model has the following beneficial effects: the utility model cooperates with the wireless communication module, the control module, the human-computer interaction touch module, the voltage conversion module, the overcurrent protection module, the high-voltage module and the fan module, wherein the wireless communication module is used to interact with the mobile phone, the control module is used to control the overcurrent protection module, and the overcurrent protection module is used to perform overcurrent protection on the high-voltage module according to the control of the control module. Therefore, when the high-voltage module is overcurrent, the control module controls the overcurrent protection module to release the current of the high-voltage module, thereby avoiding the potential safety hazards caused by large currents and improving safety. In addition, before the user returns to the room, the user can control the air purifier to work through the mobile phone, and can enjoy comfortable air after returning to the room. When the user goes out, the user can also check the working status of the air purifier to avoid forgetting to turn it off, which is convenient for the user to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a principle block diagram of an air purifier control system with high-voltage module overcurrent protection.

[0019] Figure 2 The utility model is a circuit diagram of the remotely controllable overcurrent protection module.

[0020] Figure 3 This is a circuit diagram of the remotely controllable voltage conversion module of the utility model. DETAILED DESCRIPTION

[0021] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. It should be noted that, if there is no conflict, the embodiments of the present invention and the various features in the embodiments can be combined with each other, all within the protection scope of the present invention.

[0022] See also Figures 1 to 3 The utility model provides an air purifier control system with high-voltage module overcurrent protection, including a wireless communication module 1, a control module 2, a human-computer interaction touch module 3, a voltage conversion module 4, an overcurrent protection module 5, a high-voltage module 6 and a fan module 7. The wireless communication module 1 is electrically connected to the control module 2 for information interaction with a mobile phone. The control module 2 is electrically connected to the overcurrent protection module 5 for controlling the overcurrent protection module 5.

[0023] The human-computer interaction touch module 3 is electrically connected to the control module 2 for human-computer interaction. The voltage conversion module 4 is electrically connected to the overcurrent protection module 5 for converting the external voltage for power supply. The overcurrent protection module 5 is electrically connected to the high-voltage module 6 for overcurrent protection of the high-voltage module 6 according to the control of the control module 2. The fan module 7 is electrically connected to the control module 2 for blowing the airflow in the target direction.

[0024] The overcurrent protection module 5 includes a high-voltage connection interface J, a current detection unit 51 and a current release unit 52. The high-voltage connection interface J is used to be electrically connected to the high-voltage module 6. The current detection unit 51 is electrically connected to the high-voltage connection interface J and the control module 2, and is used to detect the current of the high-voltage module 6. The current release unit 52 is electrically connected to the high-voltage connection interface J and the control unit, and is used to release the current of the high-voltage module 6 when overcurrent occurs. Therefore, when the control module 2 detects that the current of the high-voltage module 6 is too large, the current release unit 52 is controlled to release the current of the high-voltage module 6.

[0025] The current detection unit 51 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a comparator U1, a first photocoupler T1 and a transistor Q1. The first end of the first resistor R1 is electrically connected to the voltage conversion module 4, and the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2. The first end of the second resistor R2 is electrically connected to the positive input pin of the comparator U1, and the second end of the second resistor R2 is grounded. The first end of the third resistor R3 is electrically connected to the first connection pin of the high-voltage connection interface J, and the second end of the third resistor R3 is electrically connected to the reverse input pin of the comparator U1.

[0026] The first end of the fourth resistor R4 is electrically connected to the first end of the first resistor R1, and the second end of the fourth resistor R4 is electrically connected to the first signal input pin of the first photocoupler T1. The first end of the fifth resistor R5 is electrically connected to the output pin of the comparator U1, and the second end of the fifth resistor R5 is electrically connected to the base of the transistor Q1. The emitter of the transistor Q1 is electrically connected to the second signal input pin of the first photocoupler T1, and the collector of the transistor Q1 is grounded. The current detection unit 51 has the advantages of simple structure, stability and reliability.

[0027] The current detection unit 51 also includes a first capacitor C1 and a sixth resistor R6. The first end of the first capacitor C1 is electrically connected to the positive input pin of the comparator U1, and the second end of the first capacitor C1 is grounded. The first end of the second resistor R2 is electrically connected to the positive input pin of the comparator U1 through the sixth resistor R6. The first capacitor C1 and the sixth resistor R6 are used to perform filtering, so the influence of voltage fluctuations can be avoided and reliability is improved.

[0028] The current detection unit 51 also includes a second capacitor C2 and a third capacitor C3, wherein a first end of the second capacitor C2 is electrically connected to a first connection pin of the high voltage connection interface J, and a second end of the second capacitor C2 is electrically connected to a second connection pin of the high voltage connection interface J. A first end of the third capacitor C3 is electrically connected to a reverse input pin of the comparator U1, and a second end of the third capacitor C3 is grounded. The second capacitor C2 and the third capacitor C3 cooperate to perform filtering, thereby further improving reliability.

[0029] The current detection unit 51 further includes a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6 and a seventh resistor R7. A first end of the fourth capacitor C4 is electrically connected to the output pin of the comparator U1, and a second end of the fourth capacitor C4 is grounded.

[0030] The first end of the fifth capacitor C5 is electrically connected to the first end of the first resistor R1, and the second end of the fifth capacitor C5 is grounded. The first end of the sixth capacitor C6 is electrically connected to the first end of the seventh resistor R7, and the second end of the sixth capacitor C6 is grounded. The first end of the seventh resistor R7 is electrically connected to the first end of the fourth resistor R4, and the second end of the seventh resistor R7 is electrically connected to the output pin of the comparator U1.

[0031] The current detection unit 51 further includes an eighth resistor R8, a ninth resistor R9 and a tenth resistor R10, wherein a first end of the eighth resistor R8 is electrically connected to the voltage conversion module 4, and a second end of the eighth resistor R8 is electrically connected to a first signal output pin of the first photoelectric coupler T1. A first end of the ninth resistor R9 is electrically connected to a second end of the eighth resistor R8, and a second end of the ninth resistor R9 is electrically connected to the control module 2. The first resistor R1 is electrically connected to the voltage conversion module 4 through the tenth resistor R10, and a second signal output pin of the first photoelectric coupler T1 is grounded.

[0032] The current release unit 52 includes an eleventh resistor R11, a twelfth resistor R12, a field effect transistor Q2 and a second photocoupler T2. The first end of the eleventh resistor R11 is electrically connected to the first connection pin of the high-voltage connection interface J, and the second end of the eleventh resistor R11 is electrically connected to the source of the field effect transistor Q2.

[0033] The first end of the twelfth resistor R12 is electrically connected to the drain of the field effect tube Q2, and the second end of the twelfth resistor R12 is electrically connected to the gate of the field effect tube Q2. The drain of the field effect tube Q2 is electrically connected to the voltage conversion module 4, the gate of the field effect tube Q2 is electrically connected to the first signal output pin of the second photoelectric coupler T2, the second signal output pin of the second photoelectric coupler T2 is grounded, the first signal input pin of the second photoelectric coupler T2 is electrically connected to the control module 2, and the second signal input pin of the second photoelectric coupler T2 is grounded. By setting the twelfth resistor R12, the field effect tube Q2 can be protected from breakdown.

[0034] The current release unit 52 further includes a seventh capacitor C7 , a first end of the seventh capacitor C7 is electrically connected to the source of the field effect transistor Q2 , and a second end of the seventh capacitor C7 is electrically connected to the drain of the field effect transistor Q2 .

[0035] The current release unit 52 further includes a thirteenth resistor R13 and a fourteenth resistor R14, wherein a first end of the thirteenth resistor R13 is electrically connected to the first signal input pin of the second photocoupler T2, and a second end of the thirteenth resistor R13 is electrically connected to the control module 2. A first end of the fourteenth resistor R14 is electrically connected to a first end of the thirteenth resistor R13, and a second end of the fourteenth resistor R14 is grounded.

[0036] Among them, the voltage conversion module 4 includes a step-down chip U2, a first inductor L1, a second inductor L2, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12 and a fifteenth resistor R15. The anode of the first diode D1 is used to be connected to the high voltage electricity. After the high voltage electricity is reduced to 12V by the step-down chip U2, it is output from the second inductor L2 to the overcurrent protection module 5.

[0037] In summary, the utility model cooperates with the wireless communication module 1, the control module 2, the human-computer interaction touch module 3, the voltage conversion module 4, the overcurrent protection module 5, the high-voltage module 6 and the fan module 7. The wireless communication module 1 is used to interact with the mobile phone, the control module 2 is used to control the overcurrent protection module 5, and the overcurrent protection module 5 is used to perform overcurrent protection on the high-voltage module 6 according to the control of the control module 2. Therefore, when the high-voltage module 6 is overcurrent, the control module 2 controls the overcurrent protection module to release the current of the high-voltage module 6, thereby avoiding the safety hazards caused by the large current and improving the safety. In addition, before the user returns to the room, he can control the air purifier to work through the mobile phone, and he can enjoy comfortable air after returning to the room. When the user goes out, he can also check the working status of the air purifier to avoid forgetting to turn it off, which is convenient for the user to use.

[0038] The air purifier control system with high-voltage module overcurrent protection provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for those of ordinary skill in the art, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification is only an implementation method of the utility model, and it does not limit the patent scope of the utility model. All equivalent structures or equivalent process changes made by using the contents of the specification and drawings of the utility model, or directly or indirectly used in other related technical fields, are similarly included in the patent protection scope of the utility model and should not be understood as limitations on the utility model.

Claims

1. An air purifier control system with high-voltage module overcurrent protection, characterized in that: It includes a wireless communication module, a control module, a human-computer interaction touch module, a voltage conversion module, an overcurrent protection module, a high-voltage module and a fan module. The wireless communication module is electrically connected to the control module for information interaction with a mobile phone; the control module is electrically connected to the overcurrent protection module for controlling the overcurrent protection module; the human-computer interaction touch module is electrically connected to the control module for human-computer interaction; the voltage conversion module is electrically connected to the overcurrent protection module for converting an external voltage for power supply; the overcurrent protection module is electrically connected to the high-voltage module for overcurrent protection of the high-voltage module according to the control of the control module; the fan module is electrically connected to the control module for blowing airflow to a target direction.

2. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 1, characterized in that: The overcurrent protection module includes a high-voltage connection interface, a current detection unit and a current release unit. The high-voltage connection interface is used to be electrically connected to the high-voltage module; the current detection unit is electrically connected to the high-voltage connection interface and the control module, and is used to detect the current of the high-voltage module; the current release unit is electrically connected to the high-voltage connection interface and the control module, and is used to release the current of the high-voltage module when overcurrent occurs.

3. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 2, characterized in that: The current detection unit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a comparator, a first photocoupler and a transistor, wherein a first end of the first resistor is electrically connected to the voltage conversion module, and a second end of the first resistor is electrically connected to a first end of the second resistor; a first end of the second resistor is electrically connected to a positive input pin of the comparator, and a second end of the second resistor is grounded; a first end of the third resistor is electrically connected to a first connection pin of the high-voltage connection interface, and a second end of the third resistor is electrically connected to a negative input pin of the comparator; The first end of the fourth resistor is electrically connected to the first end of the first resistor, and the second end of the fourth resistor is electrically connected to the first signal input pin of the first photocoupler; the first end of the fifth resistor is electrically connected to the output pin of the comparator, and the second end of the fifth resistor is electrically connected to the base of the transistor; the emitter of the transistor is electrically connected to the second signal input pin of the first photocoupler, and the collector of the transistor is grounded.

4. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 3, characterized in that: The current detection unit also includes a first capacitor and a sixth resistor, the first end of the first capacitor is electrically connected to the positive input pin of the comparator, and the second end of the first capacitor is grounded; the first end of the second resistor is electrically connected to the positive input pin of the comparator through the sixth resistor.

5. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 3, characterized in that: The current detection unit also includes a second capacitor and a third capacitor, the first end of the second capacitor is electrically connected to the first connection pin of the high-voltage connection interface, and the second end of the second capacitor is electrically connected to the second connection pin of the high-voltage connection interface; the first end of the third capacitor is electrically connected to the reverse input pin of the comparator, and the second end of the third capacitor is grounded.

6. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 3, characterized in that: The current detection unit further includes a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh resistor, a first end of the fourth capacitor is electrically connected to the output pin of the comparator, and a second end of the fourth capacitor is grounded; The first end of the fifth capacitor is electrically connected to the first end of the first resistor, and the second end of the fifth capacitor is grounded; the first end of the sixth capacitor is electrically connected to the first end of the seventh resistor, and the second end of the sixth capacitor is grounded; the first end of the seventh resistor is electrically connected to the first end of the fourth resistor, and the second end of the seventh resistor is electrically connected to the output pin of the comparator.

7. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 3, characterized in that: The current detection unit also includes an eighth resistor, a ninth resistor and a tenth resistor, the first end of the eighth resistor is electrically connected to the voltage conversion module, and the second end of the eighth resistor is electrically connected to the first signal output pin of the first photoelectric coupler; the first end of the ninth resistor is electrically connected to the second end of the eighth resistor, and the second end of the ninth resistor is electrically connected to the control module; the first resistor is electrically connected to the voltage conversion module through the tenth resistor, and the second signal output pin of the first photoelectric coupler is grounded.

8. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 2, characterized in that: The current release unit includes an eleventh resistor, a twelfth resistor, a field effect transistor and a second photoelectric coupler, wherein a first end of the eleventh resistor is electrically connected to a first connection pin of the high voltage connection interface, and a second end of the eleventh resistor is electrically connected to a source of the field effect transistor; The first end of the twelfth resistor is electrically connected to the drain of the field effect tube, and the second end of the twelfth resistor is electrically connected to the gate of the field effect tube; the drain of the field effect tube is electrically connected to the voltage conversion module, and the gate of the field effect tube is electrically connected to the first signal output pin of the second photoelectric coupler, and the second signal output pin of the second photoelectric coupler is grounded; the first signal input pin of the second photoelectric coupler is electrically connected to the control module, and the second signal input pin of the second photoelectric coupler is grounded.

9. The air purifier control system with high-voltage module overcurrent protection as claimed in claim 8, characterized in that: The current release unit further includes a seventh capacitor, a first end of the seventh capacitor is electrically connected to the source of the field effect tube, and a second end of the seventh capacitor is electrically connected to the drain of the field effect tube.

10. The air purifier control system with high-voltage module overcurrent protection according to claim 8, characterized in that: The current release unit also includes a thirteenth resistor and a fourteenth resistor, the first end of the thirteenth resistor is electrically connected to the first signal input pin of the second photoelectric coupler, and the second end of the thirteenth resistor is electrically connected to the control module; the first end of the fourteenth resistor is electrically connected to the first end of the thirteenth resistor, and the second end of the fourteenth resistor is grounded.

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