CN216432011U - Air conditioner - Google Patents

Abstract

The present disclosure relates to an air conditioner, which comprises a fresh air fan, a detection switch and a filter screen bracket; the screen support is configured to move the screen into the air conditioner when moved to a first position and to move the screen out of the air conditioner when moved to a second position; the detection switch is connected in series in a power supply loop of the fresh air fan and is configured to disconnect the power supply loop when the filter screen support is located at the second position and to connect the power supply loop when the filter screen support is located at the first position. The power supply loop of new trend fan can be disconnected and switched on through detecting the switch in this embodiment, under the condition that power module is the new trend fan power supply, can confirm whether install the filter screen in the air conditioner through whether new trend fan works, can improve the accuracy and the reliability of testing result, is favorable to promoting the use of air conditioner and experiences.

Description

Air conditioner

Technical Field

The present disclosure relates to the field of detection technology, and more particularly, to an air conditioner.

Background

As air conditioners become more popular, their functions, such as fresh air functions, become more abundant. The fresh air function means that the air conditioner can send outdoor fresh air into the room, and simultaneously discharge indoor dirty air, namely, the ventilation and air exchange are carried out indoors.

In order to realize the fresh air function, the existing air conditioner is generally provided with a fresh air filter screen, and dust or harmful substances in air are filtered by the fresh air filter screen. The existing fresh air filter screen device has a certain service life, and needs to be replaced when the service life exceeds the service life, so that the reliability of the fresh air function is ensured. However, when the air conditioner is installed or the filter screen is replaced, the situation that the filter screen is not installed often occurs, and the fresh air function of the air conditioner is affected.

Disclosure of Invention

The present disclosure provides an air conditioner to solve the disadvantages of the related art.

According to a first aspect of the embodiments of the present disclosure, an air conditioner is provided, which includes a fresh air blower, a detection switch, and a filter screen bracket; the screen support is configured to move the screen into the air conditioner when moved to a first position and to move the screen out of the air conditioner when moved to a second position; the detection switch is connected in series in a power supply loop of the fresh air fan and is configured to disconnect the power supply loop when the filter screen support is located at the second position and to connect the power supply loop when the filter screen support is located at the first position.

Optionally, the air conditioner further comprises a power module; the detection switch comprises a first wiring end, a second wiring end, a spring piece and a contact key; the first wiring terminal is electrically connected with the power supply module, and the second wiring terminal is electrically connected with the fresh air fan; the spring piece is located on a moving path of the filter screen support and is configured to be separated from the contact key when the filter screen support is located at the second position so as to break the electric connection between the first wiring end and the second wiring end, and the spring piece presses the contact key when the filter screen support is located at the first position so as to enable the first wiring end and the second wiring end to be electrically connected.

Optionally, the fresh air fan includes a first motor, and the first motor includes a positive end and a negative end; the positive terminal is electrically connected with the second wiring terminal of the detection switch, and the negative terminal is grounded.

Optionally, the detection switch comprises a first terminal, a second terminal, a spring piece and a contact key; the first wiring end is electrically connected with the fresh air fan, and the second wiring end is grounded; the spring piece is located on a moving path of the filter screen support and is configured to be separated from the contact key when the filter screen support is located at the second position so as to break the electric connection between the first wiring end and the second wiring end, and the spring piece presses the contact key when the filter screen support is located at the first position so as to enable the first wiring end and the second wiring end to be electrically connected.

Optionally, the air conditioner further comprises a power module; the fresh air fan comprises a first motor, and the first motor comprises a positive end and a negative end; the positive terminal is electrically connected with the power module, and the negative terminal is electrically connected with the first wiring terminal of the detection switch.

Optionally, the first motor further comprises a feedback end and a control end; the control end is used for receiving a control signal, the feedback end is used for outputting a frequency signal representing the rotating speed of the first motor, and the frequency signal is used for determining whether the air conditioner is provided with a filter screen.

Optionally, the air conditioner further comprises a processor; the processor is electrically connected with the feedback end of the first motor and is configured to determine whether the air conditioner is provided with a filter screen or not according to the frequency signal.

Optionally, the fresh air fan comprises a second motor, and the second motor comprises a U-phase terminal, a V-phase terminal and a W-phase terminal; one of the U-phase terminal, the V-phase terminal and the W-phase terminal is electrically connected with the second terminal of the detection switch, and the first terminal of the detection switch is electrically connected with the corresponding phase power supply in the power supply module.

Optionally, the fresh air fan further comprises a first connecting piece and a second connecting piece; the first connecting piece and the second connecting piece both comprise a first connector and a second connector, and the first connector and the second connector can be plugged; the first connector of the first connecting piece is electrically connected with one of the U-phase wiring end, the V-phase wiring end and the W-phase wiring end, and the second connector of the first connecting piece is electrically connected with the second wiring end of the detection switch; the first connector of the second connecting piece is electrically connected with the first wiring end of the detection switch, and the second connector of the second connecting piece is electrically connected with a corresponding phase power supply in the power supply module;

when the first connector of the first connector is spliced with the second connector of the first connector and the first connector of the second connector is spliced with the second connector of the second connector, the detection switch is connected between the second motor and the power module in series; when the first connector of the first connecting piece is connected with the second connector of the second connecting piece in an inserting mode, the detection switch is not connected between the second motor and the power supply module in series.

Optionally, the air conditioner further comprises a processor; and the processor is electrically connected with the second motor and used for determining whether the air conditioner is provided with the filter screen or not according to the loop current of the second motor.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the air conditioner provided by the embodiment of the disclosure can comprise a fresh air fan, a detection switch and a filter screen bracket; the screen support is configured to move the screen into the air conditioner when moved to a first position and to move the screen out of the air conditioner when moved to a second position; the detection switch is connected in series in a power supply loop of the fresh air fan and is configured to disconnect the power supply loop when the filter screen support is located at the second position and to connect the power supply loop when the filter screen support is located at the first position. Like this, can break off and switch on the power supply loop of new trend fan through detecting the switch in this embodiment, under the condition that power module is the new trend fan power supply, can confirm whether install the filter screen in the air conditioner through whether the new trend fan works, can improve the accuracy and the reliability of testing result, be favorable to promoting the use of air conditioner and experience.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a block diagram illustrating an air conditioner according to an exemplary embodiment.

Fig. 2 is a schematic diagram illustrating a detection switch connected in series to a power supply loop according to an exemplary embodiment.

Fig. 3 is a schematic diagram illustrating another detection switch connected in series to a power supply loop according to an exemplary embodiment.

Fig. 4 is a schematic diagram illustrating yet another detection switch connected in series to a power supply loop according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating yet another detection switch connected in series to a power supply loop according to an exemplary embodiment.

Fig. 6 is a schematic diagram illustrating yet another detection switch connected in series to a power supply loop according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The following exemplary described embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure as recited in the claims below. It should be noted that, in the following examples and embodiments, features may be combined with each other without conflict.

In order to solve the above technical problem, an embodiment of the present disclosure provides an air conditioner, in which an air inlet passage and an air outlet passage are disposed, and a fresh air blower is disposed in the air inlet passage, where the fresh air blower may include a fan and a motor. The motors can comprise an internal motor (also called a low-voltage motor, such as a 12V motor) and an external motor (also called a high-voltage motor, such as a 310V motor); the internal motor means that the control part (or the processor) is arranged inside the motor, and the external motor means that the control part (or the processor) is arranged outside the motor. Particularly, the treater is located the inside or outside of new trend fan in this disclosure, does not all influence the implementation of this disclosed scheme.

Taking a 12V motor as an example, the motor may include 4 terminals: the motor comprises a positive end (inputting 12V voltage), a negative end (GND, grounded to form a current loop), a control end (VSP, inputting control voltage, such as 0-5V, the rotating speed is faster when the voltage is larger) and a feedback end (FG, feeding back different frequencies to reflect the rotating speed of the motor). And, the processor may be in communication with the motor and output a control signal to the control terminal of the motor, where the control signal may be the control voltage to operate the motor in different operating states (each operating state having a different rotational speed). Taking the 310V motor as an example, the motor may include 3 terminals: u-phase terminal, V-phase terminal and W-phase terminal. At this time, the power module in the air conditioner can convert an external power supply into 310V direct current, and then the on/off of the switching devices (such as MOS switching tubes or IGBT devices) are respectively controlled to input the 310V direct current to 3 terminals of the motor, so as to supply power to the fresh air motor.

The new trend fan needs to keep the power supply state when the new trend function of using the air conditioner is considered, namely the power supply loop of the new trend fan needs to keep the on-state. Based on this, the inventive concept of the present embodiment is that a detection switch may be provided, the on/off of which is associated with whether or not the filter screen is installed (for example, the detection switch is in an off state when the filter screen is not installed in the air conditioner, and the detection switch is in an on state when the filter screen is installed in the air conditioner); and the on-off of the detection switch can determine the on-off of the power supply loop of the fresh air fan (for example, when the detection switch is in an off state, the power supply loop is also in an off state, and when the detection switch is in an on state, the power supply loop is also in an on state). Like this, only need increase a detection switch in this embodiment, can confirm whether install the filter screen through detecting whether the new trend fan normally works, can improve the accuracy and the reliability of testing result.

It is considered that the on/off of the detection switch is associated with whether the filter screen is installed or not, and the filter screen is generally disposed in a filter screen holder of the air conditioner. Referring to fig. 1, the screen support 40 may move to a first position (indicated by P1) or a second position (indicated by P2) along a moving path as a user pushes and pulls the screen when mounting or replacing the screen. For example, when the filter support 40 moves to the first position P1, the filter can be moved into the air conditioner 100, so that the fresh air function of the air conditioner 100 can be used normally; and the filter screen may be moved out of the air conditioner 100 to refresh the filter screen or install the filter screen when the filter screen holder 40 is moved to the second position P2. Based on the moving condition of the filter screen bracket 40 in the air conditioner 100, in this embodiment, the detection switch 30 may be disposed on the moving path of the filter screen bracket 40 and serially connected within the power supply circuit of the fresh air fan, and configured to disconnect the power supply circuit of the fresh air fan when the filter screen bracket is located at the second position and connect the power supply circuit of the fresh air fan when the filter screen bracket is located at the first position.

It should be noted that for clarity of fig. 1, screen carrier 40 is moved to the right by a distance in fig. 1, and a dashed line connection is used between detection switch 30 and screen carrier 40, indicating that the detection switch is above the path of movement of screen carrier 40. In the following embodiments, the screen holder 40 may touch the detection switch 30 while moving on the moving path, thereby pressing the detection switch, which will not be described.

It is contemplated that a first motor, such as motor 21 of fig. 2 and 3, may be employed with the fresh air blower. And the first motor may be implemented as a 12V motor. The power supply circuit for the first motor may include: the power module → the first motor → ground, so the manner of detecting the series connection of the switch to the power supply circuit may comprise: between the power module and the first motor, and between the first motor and ground.

Taking the example between the power module and the first motor, referring to fig. 2 and 3, the detection switch 30 may include a first terminal 33, a second terminal 34, a spring 31, and a contact button 32. The first terminal 33 is electrically connected to the power module 10 of the air conditioner 100, and the second terminal 34 is electrically connected to the fresh air blower 20 (i.e., the motor 21). The elastic sheet 31 is located on the moving path of the filter screen bracket 40, and is configured to be separated from the contact key 32 when the filter screen bracket 40 is located at the second position P2, so as to break the electrical connection between the first terminal 33 and the second terminal 34, so that the current of the power module 10 cannot reach the fresh air fan, and the effect of breaking the power supply loop of the fresh air fan 20 is achieved; and when the filter screen bracket 40 is located at the first position P1, the elastic sheet 31 presses the contact key 32 due to the filter screen bracket 40 pressing the elastic sheet 31, and after the contact key 32 is pressed (as shown by the reference numeral 321), the first terminal 33 and the second terminal 34 are electrically connected, so as to turn on the power supply circuit of the fresh air fan 20. Like this, through the physics contact mode of filter screen support extrusion or not extrusion shell fragment in this embodiment, control detection switch's break-make, finally realize power supply loop's break-make, can promote the reliability that detects.

In addition to the embodiments shown in fig. 2 and 3, the positive terminal 211 of the first motor is connected to the second terminal 34 of the detection switch 30, and the negative terminal 212 of the first motor is grounded to GND. A feedback terminal (not shown) of the first motor may be electrically connected to a processor (not shown) of the air conditioner 100, and configured to output a frequency signal indicative of a rotation speed of the first motor, and the frequency signal is used to determine whether the air conditioner is installed with the filter screen.

After the processor obtains the frequency signal, whether the filter screen is installed on the air conditioner can be determined according to the frequency signal. For example, when the power supply loop of the first motor is turned on and normally supplies power, the first motor may normally operate, and at this time, the feedback end of the first motor may output an effective frequency signal, where the effective frequency signal means that the rotation speed of the first motor may be calculated according to the frequency signal and is between 0 and N, where N is the maximum rotation speed of the first motor, or the frequency signal is within a preset frequency range (0 to M), and M is a frequency corresponding to the maximum rotation speed of the first motor. For another example, when the power supply loop of the first motor is disconnected (that is, the current of the source module cannot reach the first motor), the first motor cannot operate, and at this time, the feedback end of the first motor may output an invalid frequency signal, where the invalid frequency signal refers to a preset frequency signal, for example, a frequency signal greater than M, or the rotational speed of the first motor is calculated to be greater than N according to the frequency signal.

Taking the example between the first motor and the ground, referring to fig. 4, the detection switch 30 may include a first terminal 33, a second terminal 34, a spring 31, and a contact button 32. The first terminal 33 is electrically connected with the fresh air fan 20 (i.e. the motor 21 in fig. 4), and the second terminal 34 is grounded to GND; the elastic sheet 31 is located on the moving path of the filter screen bracket 40, and is configured to be separated from the contact key 32 when the filter screen bracket 40 is located at the second position P2, so as to disconnect the electrical connection between the first terminal 33 and the second terminal 34, and achieve the effect of disconnecting the power supply loop of the fresh air fan 20 by preventing the current from normally flowing back to the power supply module 10; when the filter screen bracket 40 is located at the first position P1, the elastic sheet 31 presses the contact button 32 due to the fact that the filter screen bracket 40 presses the elastic sheet 31, and the contact button 32 is pressed to electrically connect the first terminal 33 and the second terminal 34, so that the power supply circuit of the fresh air fan 20 is switched on. Like this, the physical contact mode through filter screen support 40 extrusion or not extrusion shell fragment 31 in this embodiment comes the break-make of control detection switch 30, finally realizes the break-make of power supply loop, can promote the reliability that detects.

In the embodiment shown in fig. 4, the positive terminal 211 of the first motor is electrically connected to the power module 10, and the negative terminal 212 of the first motor is electrically connected to the first terminal 33 of the detection switch 30. The control terminal (not shown) of the first motor is used for receiving the control signal. A feedback terminal (not shown) of the first motor may be electrically connected to a processor (not shown) of the air conditioner, and configured to output a frequency signal indicative of a rotation speed of the first motor, and the frequency signal is used to determine whether the air conditioner is installed with the filter screen. The step of determining whether the filter screen is installed on the air conditioner by the processor according to the frequency signal may refer to the contents in the embodiments shown in fig. 2 and fig. 3, and is not described herein again.

It is contemplated that the fresh air blower 20 may be implemented using a second motor, and that the second motor may be implemented using a 310V motor. Referring to fig. 5, the power supply circuit of the second motor (e.g., the motor 22 in fig. 5) is implemented by a UVW three-phase circuit, so that the detection switch 30 may be connected in series between one of the U-phase terminal, the V-phase terminal and the W-phase terminal of the second motor and the power module, that is, one of the U-phase terminal, the V-phase terminal and the W-phase terminal is electrically connected to the second terminal of the detection switch 30, and the first terminal 33 of the detection switch 30 is electrically connected to the corresponding phase power supply in the power module 10.

It should be noted that the contents of the embodiment shown in fig. 2 and fig. 3 can be referred to for the installation position and the on/off state of the detection switch 30. It can be understood that the detection switch is connected in series to any phase circuit of the second motor, when the detection switch is turned off, only the two-phase circuit of the second motor supplies power, so that the loop current of the power supply loop is abnormal, and at the moment, the processor can determine that the loop current of the power supply loop is abnormal according to the loop current, that is, the power supply loop has a phase-lacking fault, and further determine that the air conditioner is not provided with the filter screen. For example, resistors are provided in 1 or 2 phase circuits in the UVW phase circuit, and then currents of the respective resistors are detected and currents in 3 phase circuits are reconstructed from the currents in the 1 or 2 phase circuits. When the phase current of 1 in the air conditioner is 0, the processor can determine that the phase is open, and further determine that the air conditioner is not provided with the filter screen. The skilled person can also determine the scheme of the open-phase fault in other ways, and the corresponding scheme falls into the scope of protection of the present disclosure.

In one embodiment, referring to fig. 6, the fresh air fan 20 further includes a first connector 23 and a second connector 24. The first connector 23 and the second connector 24 each include a first connector a and a second connector B, which are insertable. The first connector A of the first connector 23 is electrically connected with one of the U-phase terminal, the V-phase terminal and the W-phase terminal, and the second connector B of the first connector 23 is electrically connected with the second terminal 34 of the detection switch; a first connector A of the second connector 24 is electrically connected with a first terminal A of the detection switch 30, and a second connector B of the second connector 24 is electrically connected with a corresponding power supply in the power module 10;

when the first connector a of the first connector 23 is plugged with the second connector B of the first connector 23 and the first connector a of the second connector 24 is plugged with the second connector B of the second connector 24, the detection switch 30 is connected in series between the second motor and the power module 10; when the first connector a of the first connector 23 is plugged with the second connector B of the second connector 24, the detection switch 30 is not connected in series between the second motor and the power module 10. Like this, this embodiment is through setting up first connecting piece and second connecting piece, can be with among the detection switch concatenates the power supply circuit, convenient operation is swift.

In an embodiment, when the processor determines that the filter screen is not installed in the air conditioner, the air conditioner may be controlled to stop and fault prompt information representing that the filter screen is not installed is displayed on a display screen of the air conditioner, for example, "the filter screen is not installed, please install and then use", so as to achieve an effect of reminding a user of timely handling the fault. In practical application, it is considered that the user may control the air conditioner through the corresponding APP, and therefore, the processor may send the fault notification information to the communication module of the air conditioner, and the communication module uploads the fault notification information to the APP. APP can show above-mentioned trouble prompt message through the mode of popup window, can reach the effect of reminding the user in time to handle the trouble equally. Of course, the processor may also push the fault notification information in a manner of corresponding mail, short message, or instant messaging software, and the corresponding scheme falls within the protection scope of the present disclosure. In an embodiment, when the processor determines that the filter screen is installed in the air conditioner, the detection process is ended without generating a prompt message, so that the effect of not influencing a user is achieved.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air conditioner is characterized by comprising a fresh air fan, a detection switch and a filter screen bracket; the screen support is configured to move the screen into the air conditioner when moved to a first position and to move the screen out of the air conditioner when moved to a second position; the detection switch is connected in series in a power supply loop of the fresh air fan and is configured to be switched off when the filter screen support is located at the second position and switched on when the filter screen support is located at the first position.

2. The air conditioner of claim 1, further comprising a power module; the detection switch comprises a first wiring end, a second wiring end, a spring piece and a contact key; the first wiring terminal is electrically connected with the power supply module, and the second wiring terminal is electrically connected with the fresh air fan; the spring piece is located on a moving path of the filter screen support and is configured to be separated from the contact key when the filter screen support is located at the second position so as to break the electric connection between the first wiring end and the second wiring end, and the spring piece presses the contact key when the filter screen support is located at the first position so as to enable the first wiring end and the second wiring end to be electrically connected.

3. The air conditioner of claim 2, wherein the fresh air blower comprises a first motor, the first motor comprising a positive terminal and a negative terminal; the positive terminal is electrically connected with the second wiring terminal of the detection switch, and the negative terminal is grounded.

4. The air conditioner according to claim 1, wherein the detection switch includes a first terminal, a second terminal, a spring, and a contact button; the first wiring end is electrically connected with the fresh air fan, and the second wiring end is grounded; the spring piece is located on a moving path of the filter screen support and is configured to be separated from the contact key when the filter screen support is located at the second position so as to break the electric connection between the first wiring end and the second wiring end, and the spring piece presses the contact key when the filter screen support is located at the first position so as to enable the first wiring end and the second wiring end to be electrically connected.

5. The air conditioner of claim 4, further comprising a power module; the fresh air fan comprises a first motor, and the first motor comprises a positive end and a negative end; the positive terminal is electrically connected with the power module, and the negative terminal is electrically connected with the first wiring terminal of the detection switch.

6. The air conditioner according to claim 3 or 5, wherein the first motor further comprises a feedback terminal and a control terminal; the control end is used for receiving a control signal, the feedback end is used for outputting a frequency signal representing the rotating speed of the first motor, and the frequency signal is used for determining whether the air conditioner is provided with a filter screen.

7. The air conditioner of claim 6, further comprising a processor; the processor is electrically connected with the feedback end of the first motor and is configured to determine whether the air conditioner is provided with a filter screen or not according to the frequency signal.

8. The air conditioner of claim 2, wherein the fresh air blower includes a second motor, the second motor including a U-phase terminal, a V-phase terminal, and a W-phase terminal; one of the U-phase terminal, the V-phase terminal and the W-phase terminal is electrically connected with the second terminal of the detection switch, and the first terminal of the detection switch is electrically connected with the corresponding phase power supply in the power supply module.

9. The air conditioner of claim 8, wherein the fresh air blower further comprises a first connector and a second connector; the first connecting piece and the second connecting piece both comprise a first connector and a second connector, and the first connector and the second connector can be plugged; the first connector of the first connecting piece is electrically connected with one of the U-phase wiring end, the V-phase wiring end and the W-phase wiring end, and the second connector of the first connecting piece is electrically connected with the second wiring end of the detection switch; the first connector of the second connecting piece is electrically connected with the first wiring end of the detection switch, and the second connector of the second connecting piece is electrically connected with a corresponding phase power supply in the power supply module;

when the first connector of the first connector is spliced with the second connector of the first connector and the first connector of the second connector is spliced with the second connector of the second connector, the detection switch is connected between the second motor and the power module in series; when the first connector of the first connecting piece is connected with the second connector of the second connecting piece in an inserting mode, the detection switch is not connected between the second motor and the power supply module in series.

10. The air conditioner of claim 8, further comprising a processor; and the processor is electrically connected with the second motor and used for determining whether the air conditioner is provided with the filter screen or not according to the loop current of the second motor.

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