Wind shield closed circuit and air conditioner

Abstract

The utility model discloses a wind shield closed circuit and an air conditioner. The circuit comprises a power supply circuit module and a control circuit module. A switching power supply, a main chip, a wind shield control chip and an energy storage element; the switching power supply is electrically connected with the wind shield control chip and the main chip respectively, and the energy storage element is electrically connected with the switching power supply, the wind shield control chip and the main chip respectively; a first port of the main chip is electrically connected with a motor control end of the wind shield control chip; the voltage sampling end of the main chip is electrically connected with the power supply circuit module; the energy storage element is used for supplying power to the wind shield control chip and the main chip when the power supply circuit module is powered off; and the main chip is used for sending a wind shield closing signal to the wind shield control chip when the voltage sampling signal is changed into a low-level signal from a sine wave, so that the wind shield control chip controls the wind shield to be closed. According to the utility model, the problem that dust or insects and rats easily enter the wind shield when the wind shield is in an open state during power failure can be avoided, and user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a windshield closing circuit and an air conditioner. Background Art

[0002] At present, during the operation of the air conditioner or the experimental test, the wind shield is usually in the open state after a power outage. When the air conditioner is powered on again, the wind shield will be closed first and then opened. The air conditioner will start to operate normally only after the wind shield is fully opened. It takes a long time to restart after a power outage, which increases the experimental test time and has low test efficiency. In addition, when the wind shield is open during a power outage, dust or insects can easily enter the air conditioner, reducing the user experience. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a wind shield closing circuit and an air conditioner, which can avoid the problem of the wind shield closing and then opening for a long time after power failure and restart, improve the testing efficiency, and avoid the problem of dust or insects easily entering the wind shield when it is in an open state during power failure, thereby improving the user experience.

[0004] According to an embodiment of the utility model, on one hand, a windshield closing circuit is provided, comprising: a power circuit module and a control circuit module; the power circuit module comprises a switching power supply, and the control circuit module comprises a main chip, a windshield control chip and an energy storage element;

[0005] The switching power supply is electrically connected to the windshield control chip and the main chip respectively, and the energy storage element is electrically connected to the switching power supply, the windshield control chip and the main chip respectively;

[0006] The first port of the main chip is electrically connected to the motor control end of the windshield control chip to control the opening and closing state of the windshield, and the control output end of the windshield control chip is electrically connected to the control motor of the windshield;

[0007] The voltage sampling terminal of the main chip is electrically connected to the power circuit module to sample the voltage of the power circuit module to obtain a voltage sampling signal;

[0008] The energy storage element is used to supply power to the windshield control chip and the main chip when the power circuit module is powered off;

[0009] The main chip is used for sending a windshield closing signal to the windshield control chip when the voltage sampling signal changes from a sine wave to a low level signal, so that the windshield control chip controls the windshield to close.

[0010] By adopting the above technical solution, an energy storage element is set in the circuit, and the energy storage element is electrically connected to the switching power supply, the windshield control chip and the main chip respectively, so that the energy storage element can store electric energy when the power circuit module is powered on, and supply power to the windshield control chip and the main chip when the power circuit module is powered off, so that the main chip can control the windshield to close when the circuit is powered off, avoiding the problem of the windshield closing first and then opening again after power failure and restarting, which can improve the test efficiency and avoid the problem of dust or insects easily entering the windshield when the windshield is in an open state when the power is off, thereby improving the user experience.

[0011] Preferably, the control circuit module further includes a load circuit, and the second port of the main chip is electrically connected to the load circuit to supply power to the load circuit;

[0012] The main chip is used for stopping supplying power to the load circuit when the voltage sampling signal changes from a sine wave to a low level signal.

[0013] By adopting the above technical solution, when the power circuit module is suddenly powered off, the main chip stops supplying power to the load circuit, so that all the electric energy stored in the energy storage element is used to control the closing of the windshield, ensuring that the windshield can be completely closed.

[0014] Preferably, the control circuit module also includes a switching device, which is connected between the second port of the main chip and the load circuit, and the main chip is used to control the switching device to disconnect when the voltage sampling signal changes from a sine wave to a low-level signal.

[0015] By adopting the above technical solution and setting a switch device between the main chip and the load circuit, the electric energy released by the energy storage element can be timely controlled not to act on other irrelevant circuits when an unexpected power outage occurs, thereby improving the reliability of the windshield closing control.

[0016] Preferably, the switching device comprises a photoelectric coupling device.

[0017] Preferably, the control circuit module also includes: a power supply chip, the input end of the power supply chip is respectively connected to the switching power supply and the energy storage element, the output end of the power supply chip is connected to the power port of the main chip, and the power supply chip is used to convert the input voltage into the power supply voltage of the main chip.

[0018] By adopting the above technical solution, a power chip is set at the power port of the main chip to convert the power supply voltage required by the main chip, ensuring that the switching power supply or energy storage element can normally power the main chip, so as to ensure that the main chip can work normally before and after power failure.

[0019] Preferably, the power circuit module further comprises a filter circuit unit, an input end of the filter circuit unit is used to be electrically connected to an input power supply, and an output end of the filter circuit unit is electrically connected to the switching power supply.

[0020] Preferably, the power circuit module further includes a rectifier circuit unit, an input end of the rectifier circuit unit is electrically connected to an output end of the filter circuit unit, and an output end of the rectifier circuit unit is electrically connected to the switching power supply.

[0021] Preferably, the rectifier circuit unit includes a rectifier bridge, a first voltage-dropping element, a second voltage-dropping element, a first capacitor and a diode;

[0022] The input end of the rectifier bridge is connected to the output end of the filter circuit unit, the first output end of the rectifier bridge is connected to the first input end of the switching power supply through the diode, the second output end of the rectifier bridge and the third port of the switching power supply are both connected to the ground end, one end of the first voltage-dropping element is connected to the first output end of the rectifier bridge and the first input end of the switching power supply, the other end of the first voltage-dropping element is connected to one end of the second voltage-dropping element and one end of the first capacitor, and the other end of the second voltage-dropping element and the first capacitor are connected to the ground end;

[0023] The voltage sampling terminal of the main chip is electrically connected between the first voltage-dropping element and the first capacitor.

[0024] Preferably, the energy storage element includes a capacitor.

[0025] According to an embodiment of the utility model, another aspect provides an air conditioner, comprising a wind shield and the wind shield closing circuit described in any one of the first aspects.

[0026] The utility model has the following beneficial effects: by arranging an energy storage element in the circuit, and electrically connecting the energy storage element to the switching power supply, the wind shield control chip and the main chip respectively, the energy storage element can store electric energy when the power circuit module is powered on, and supply power to the wind shield control chip and the main chip when the power circuit module is powered off, so that the main chip can control the closing of the wind shield when the circuit is powered off, avoiding the problem of the wind shield closing first and then opening again after power failure and restarting, which takes a long time, can improve the test efficiency, and can also avoid the problem of dust or insects easily entering the wind shield when the power is off and it is in the open state, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0028] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0029] Figure 1 A schematic diagram of a windshield closing circuit provided by the utility model;

[0030] Figure 2 Another schematic diagram of a windshield closing circuit provided by the utility model. DETAILED DESCRIPTION

[0031] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] This embodiment provides a windshield closing circuit, see Figure 1 The windshield closing circuit schematic diagram shown in the figure includes: a power circuit module 10 and a control circuit module 20; the power circuit module includes a switching power supply 11, and the control circuit module 20 includes a main chip 21, a windshield control chip 22 and an energy storage element 23;

[0034] The switching power supply 11 is electrically connected to the windshield control chip 22 and the main chip 21 respectively, and the energy storage element 23 is electrically connected to the switching power supply 11, the windshield control chip 22 and the main chip 21 respectively;

[0035] The first port of the main chip 21 is electrically connected to the motor control terminal P1 of the windshield control chip 22 to control the opening and closing state of the windshield. The control output terminal P2 of the windshield control chip 22 is electrically connected to the control motor 24 of the windshield. The windshield control chip 22 can send a motor rotation signal to the control motor 24 to enable the control motor 24 to drive the windshield to rotate.

[0036] The voltage sampling terminal P3 of the main chip 21 is electrically connected to the power circuit module (not shown in the figure) to sample the voltage of the power circuit module to obtain a voltage sampling signal;

[0037] The energy storage element 23 is used to supply power to the windshield control chip 22 and the main chip 21 when the power circuit module 10 is powered off;

[0038] The main chip 21 is used to send a windshield closing signal to the windshield control chip 22 when the voltage sampling signal changes from a sine wave to a low-level signal, so that the windshield control chip 22 controls the windshield to close.

[0039] When the power circuit module 10 is powered on normally, the switching power supply 11 supplies power to the main chip 21 and the windshield control chip 22 at the same time, and charges the energy storage element 23 at the same time. The main chip 21 can also supply power to other load circuits to enable the air conditioner to operate normally.

[0040] When the power circuit module 10 is suddenly powered off, the voltage sampling signal collected by the main chip 21 changes from a sine wave to a low-level signal, and the energy storage element 23 starts to discharge. The energy storage element 23 supplies power to the wind shield control chip 22 and the main chip 21. The main chip 21 sends a power-off closing signal to the motor control terminal P1 of the wind shield control chip 22. After receiving the power-off closing signal sent by the main chip 21, the wind shield control chip 22 sends a closing wind shield signal to the control motor 24 of the wind shield through the control output terminal P2, so that the control motor 24 drives the wind shield to rotate to a closed state.

[0041] The above-mentioned windshield closing circuit provided in the present embodiment, by arranging an energy storage element in the circuit, and electrically connecting the energy storage element to the switching power supply, the windshield control chip and the main chip respectively, can enable the energy storage element to store electric energy when the power circuit module is powered on, and supply power to the windshield control chip and the main chip when the power circuit module is powered off, so that the main chip can control the closing of the windshield when the circuit is powered off, avoiding the problem of the windshield closing and then opening again after power failure and restarting, which can improve the test efficiency, and can also avoid the problem of dust or insects easily entering the windshield when the power is off and it is in the open state, thereby improving the user experience.

[0042] In one embodiment, Figure 1As shown, the control circuit module provided in this embodiment further includes a load circuit 25, and the second port of the main chip 21 is electrically connected to the load circuit 25 to supply power to the load circuit;

[0043] The main chip 21 is used to stop supplying power to the load circuit 25 when the voltage sampling signal changes from a sine wave to a low level signal.

[0044] When the power circuit module 10 is powered on normally, the main chip 21 supplies power to the load circuit 25 to ensure the normal operation of the air conditioner; when the power circuit module 10 is suddenly powered off, the main chip 21 disconnects from the load circuit 25 and stops supplying power to the load circuit 25 to ensure that the electric energy released by the energy storage element 23 can control the closing of the windshield.

[0045] When the power circuit module is suddenly powered off, the main chip stops supplying power to the load circuit, so that all the electric energy stored in the energy storage element is used to control the closing of the windshield, thereby ensuring that the windshield can be completely closed.

[0046] In one embodiment, the control circuit module provided in this embodiment further includes a switch device, which is connected between the second port of the main chip and the load circuit. The main chip is used to control the switch device to disconnect when the voltage sampling signal changes from a sine wave to a low-level signal. The switch device can be a component that can be controlled to be on and off by the main chip, such as a photoelectric coupling device or other electric switch. By arranging the switch device between the main chip and the load circuit, the electric energy released by the energy storage element can be timely controlled not to act on other irrelevant circuits when the power is accidentally cut off, thereby improving the reliability of the windshield closing control.

[0047] In one embodiment, the switch device provided in this embodiment includes a photoelectric coupling device. Figure 2 Another schematic diagram of a windshield closing circuit is shown, in which the second port of the main chip 21 is connected to the first port K of the optocoupler U1, the resistor R0 is connected between the second port of the main chip 21 and the first port K of the optocoupler U1, the second port E of the optocoupler U1 is connected to the output end of the switching power supply, and the third port C of the optocoupler U1 is connected to the load circuit 25.

[0048] When the main chip detects that the voltage sampling signal is a sine wave signal, that is, when the air conditioner is powered on normally, the photoelectric coupling device U1 is controlled to be turned on to supply power to the load circuit 25 to ensure the normal operation of the air conditioner.

[0049] When the main chip detects that the voltage sampling signal changes from a sine wave to a low level signal, that is, when the air conditioner is suddenly powered off, the photoelectric coupling device U1 is controlled to be disconnected and power supply to the load circuit 25 is stopped, so that the load circuit 25 does not work.

[0050] In one embodiment, Figure 2 As shown, the energy storage element 23 provided in this embodiment includes a capacitor C0.

[0051] In one embodiment, Figure 2 As shown, the control circuit module provided in this embodiment also includes: a power supply chip U2, the input terminal IN of the power supply chip U2 is respectively connected to the switching power supply 11 and the energy storage element 23 (i.e., capacitor C0), the output terminal OUT of the power supply chip U2 is connected to the power port of the main chip 21, and the power supply chip U2 is used to convert the input voltage into a +5V power supply voltage of the main chip 21 to power the main chip 21.

[0052] By setting a power chip at the power port of the main chip to convert the power supply voltage required by the main chip, it is ensured that the switching power supply or energy storage element can normally power the main chip, so as to ensure that the main chip can work normally before and after power failure.

[0053] In one embodiment, Figure 1 As shown, the power circuit module provided in this embodiment also includes a filter circuit unit 12, the input end of the filter circuit unit 12 is used to be electrically connected to the input power supply (not shown in the figure), and the output end of the filter circuit unit 12 is electrically connected to the switching power supply 11.

[0054] In one embodiment, Figure 1 As shown, the power circuit module provided in this embodiment further includes a rectifier circuit unit 13 , the input end of the rectifier circuit unit 13 is electrically connected to the output end of the filter circuit unit 12 , and the output end of the rectifier circuit unit 13 is electrically connected to the switch power supply 11 .

[0055] In one embodiment, Figure 2 As shown, the rectifier circuit unit provided in this embodiment includes a rectifier bridge U3, a first voltage-dropping element R1, a second voltage-dropping element R2, a first capacitor C1 and a diode D1; the input end of the rectifier bridge U3 is connected to the output end of the filter circuit unit 12, the first output end of the rectifier bridge U3 is connected to the first input end of the switching power supply 11 through the diode D1, the second output end of the rectifier bridge U3 and the third port of the switching power supply 11 are both connected to the ground end, one end of the first voltage-dropping element R1 is connected to the first output end of the rectifier bridge U3 and the first input end of the switching power supply 11, the other end of the first voltage-dropping element R1 is connected to one end of the second voltage-dropping element R2 and one end of the first capacitor C1, and the other end of the second voltage-dropping element R2 and the first capacitor C1 are connected to the ground end; the voltage sampling end of the main chip 21 is electrically connected between the first voltage-dropping element R1 and the first capacitor C1, so that the main chip 21 determines whether the air conditioner is suddenly powered off according to the voltage sampling signal.

[0056] In one embodiment, Figure 2As shown, the rectifier circuit unit also includes an electrolytic capacitor E1 and a capacitor C2, the positive electrode of the electrolytic capacitor E1 is connected to the input end of the switching power supply 11, the negative electrode of the electrolytic capacitor E1 is connected to the ground end, one end of the capacitor C2 is connected to the output end of the switching power supply 11 and the 12V power supply, and the other end of the capacitor C2 is connected to the ground end.

[0057] In one embodiment, Figure 2 As shown, the control circuit module provided in this embodiment also includes a capacitor C3 and an electrolytic capacitor E2. The capacitor C3 is connected in parallel with the electrolytic capacitor E2. One end of the capacitor C3 is connected to the output terminal OUT of the main chip 21 and the power chip U2, and the other end is connected to the ground terminal; one end of the electrolytic capacitor E2 is connected to the output terminal OUT of the main chip 21 and the power chip U2, and the other end is connected to the ground terminal.

[0058] The above-mentioned windshield closing circuit provided in the present embodiment, by adding an energy storage element, can supply power to the windshield driving chip and the main chip to close the windshield when the air conditioner is accidentally powered off; by adding an optical coupling device between the main chip and the load circuit, the electric energy released by the capacitor will not act on the load circuit when the air conditioner is accidentally powered off, but will only act on the windshield driving circuit; by adding a voltage sampling point in the power supply circuit, it can be accurately determined whether the air conditioner is accidentally powered off, thereby controlling the optical coupling device to disconnect and the windshield to close, thereby improving the reliability of the automatic closing control of the windshield when the power is off.

[0059] Corresponding to the windshield closing circuit provided in the above embodiment, this embodiment provides an air conditioner, which includes: an indoor unit and an outdoor unit, and the indoor unit includes a windshield and the windshield closing circuit provided in the above embodiment.

[0060] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0061] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the air conditioner disclosed in the embodiment, since it corresponds to the windshield closing circuit disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0064] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

Claims

1. A windshield closing circuit, characterized in that: include: A power circuit module and a control circuit module; the power circuit module includes a switching power supply, and the control circuit module includes a main chip, a windshield control chip and an energy storage element; The switching power supply is electrically connected to the windshield control chip and the main chip respectively, and the energy storage element is electrically connected to the switching power supply, the windshield control chip and the main chip respectively; The first port of the main chip is electrically connected to the motor control end of the windshield control chip to control the opening and closing state of the windshield, and the control output end of the windshield control chip is electrically connected to the control motor of the windshield; The voltage sampling terminal of the main chip is electrically connected to the power circuit module to sample the voltage of the power circuit module to obtain a voltage sampling signal; The energy storage element is used to supply power to the windshield control chip and the main chip when the power circuit module is powered off; The main chip is used for sending a windshield closing signal to the windshield control chip when the voltage sampling signal changes from a sine wave to a low level signal, so that the windshield control chip controls the windshield to close.

2. The windshield closing circuit according to claim 1, characterized in that: The control circuit module further includes a load circuit, and the second port of the main chip is electrically connected to the load circuit to supply power to the load circuit; The main chip is used for stopping supplying power to the load circuit when the voltage sampling signal changes from a sine wave to a low level signal.

3. The windshield closing circuit according to claim 2, characterized in that: The control circuit module also includes a switch device, which is connected between the second port of the main chip and the load circuit. The main chip is used to control the switch device to be disconnected when the voltage sampling signal changes from a sine wave to a low level signal.

4. The windshield closing circuit according to claim 3, characterized in that: The switch device comprises a photoelectric coupling device.

5. The windshield closing circuit according to claim 1, characterized in that: The control circuit module also includes: a power chip, the input end of the power chip is respectively connected to the switching power supply and the energy storage element, the output end of the power chip is connected to the power port of the main chip, and the power chip is used to convert the input voltage into the power supply voltage of the main chip.

6. The windshield closing circuit according to claim 1, characterized in that: The power circuit module further includes a filter circuit unit, an input end of the filter circuit unit is used to be electrically connected to an input power supply, and an output end of the filter circuit unit is electrically connected to the switch power supply.

7. The wind deflector closing circuit according to claim 6, characterized in that: The power circuit module further includes a rectifier circuit unit, an input end of the rectifier circuit unit is electrically connected to an output end of the filter circuit unit, and an output end of the rectifier circuit unit is electrically connected to the switch power supply.

8. The wind deflector closing circuit according to claim 7, characterized in that: The rectifier circuit unit includes a rectifier bridge, a first voltage-dropping element, a second voltage-dropping element, a first capacitor and a diode; The input end of the rectifier bridge is connected to the output end of the filter circuit unit, the first output end of the rectifier bridge is connected to the first input end of the switching power supply through the diode, the second output end of the rectifier bridge and the third port of the switching power supply are both connected to the ground end, one end of the first voltage-dropping element is connected to the first output end of the rectifier bridge and the first input end of the switching power supply, the other end of the first voltage-dropping element is connected to one end of the second voltage-dropping element and one end of the first capacitor, and the other end of the second voltage-dropping element and the first capacitor are connected to the ground end; The voltage sampling terminal of the main chip is electrically connected between the first voltage-dropping element and the first capacitor.

9. The windshield closing circuit according to any one of claims 1 to 8, characterized in that: The energy storage element includes a capacitor.

10. An air conditioner, characterized in that: The invention comprises a windshield and a windshield closing circuit as described in any one of claims 1 to 9.

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