CN212388216U - Household electrical appliance - Google Patents

Abstract

The utility model discloses a household appliance. The household appliance comprises a first cavity, a second cavity and a wireless transmission device. The second cavity can be connected with the first cavity in a rotating mode. The wireless transmission device includes a first wireless component disposed on the first cavity and a second wireless component disposed on the second cavity, wherein the wireless transmission device is configured such that the first wireless component transmits powering energy to the second wireless component and the first and second wireless components communicate bi-directionally. Therefore, the wireless transmission device can realize signal transmission while realizing power supply, and the household appliance does not need to be additionally provided with a communication module for signal transmission, thereby saving the cost.

Description

Household electrical appliance

Technical Field

The utility model relates to a domestic appliance technical field, more specifically say, involve a domestic appliance.

Background

In a household appliance such as a washing machine, in which an inner tub rotates in an outer tub, in the related art, power is supplied to electrical components provided in the inner tub, for example, to a balancer provided in the inner tub, in a wireless power supply manner. In such a technical solution, in order to implement communication between an electrical component such as a balancer and a controller on the outer tub (for example, to perform voltage stabilization, control the balancer to stop or move, etc.), it is usually necessary to add an additional communication module to implement information interaction, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses embodiment provides a domestic appliance.

The utility model discloses embodiment's a domestic appliance, domestic appliance includes:

a first cavity;

a second cavity rotatably connected to the first cavity; and

a wireless transmission device comprising a first wireless component disposed on the first cavity and a second wireless component disposed on the second cavity;

wherein the wireless transmission device is configured such that the first wireless component transmits powering energy to the second wireless component and the first and second wireless components communicate bi-directionally.

Among the above-mentioned domestic appliance, on the one hand, wireless transmission device's first wireless subassembly can be to the transmission of second wireless subassembly power supply energy, and then realize the electric part power supply to the second cavity, and on the other hand, first wireless subassembly also can carry out two-way communication with the second wireless subassembly simultaneously, and then realize the information transmission of electric part on the first cavity and the electric part on the second cavity. Therefore, the wireless transceiver can realize signal transmission while realizing power supply, and the household appliance does not need to be additionally provided with a communication module for signal transmission, thereby saving the cost.

In some embodiments, the first wireless component comprises a first coil coupled to a power input, the second wireless component comprises a second coil coupled to a load, and the wireless transmission device is configured to transmit power from the first coil to the second coil and to bi-directionally communicate with the second coil via the first coil.

In some embodiments, the first wireless component further comprises a first capacitor, and the first capacitor and the first coil are connected in series to form a first resonant circuit;

the second wireless component further comprises a second capacitor, and the second capacitor and the second coil are connected in series to form a second resonant circuit;

wherein the first resonance circuit is configured to transmit the supply energy to the second coil through the first coil, and the second resonance circuit is configured to receive the supply energy transmitted by the first coil through the second coil.

In some embodiments, the first wireless component further includes a first inductor and a third capacitor, the first inductor and the third capacitor are connected in series and then connected in parallel to two ends of the first coil, and the first coil, the first inductor and the third capacitor together form a third resonant circuit;

the second wireless assembly further comprises a second inductor and a fourth capacitor, the second inductor and the fourth capacitor are connected in series and then connected in parallel at two ends of the second coil, and the second coil, the second inductor and the fourth capacitor jointly form a fourth resonant circuit.

In some embodiments, the resonant frequency at which the first coil transmits the supply energy is different from the resonant frequency of the first coil when in bidirectional communication with the second coil.

In some embodiments, the resonant frequency of the first coil when in communication with the second coil is greater than or equal to 10 times the resonant frequency of the first coil when transmitting the energizing energy.

In some embodiments, the first wireless component further includes a third inductor and a fourth inductor, the first inductor, the third inductor and the fourth inductor form a first coupling circuit, the first inductor is respectively coupled with the third inductor and the fourth inductor, the third inductor is connected with a first signal demodulation circuit, and the fourth inductor is connected with a first signal generator;

the second wireless assembly further comprises a fifth inductor and a sixth inductor, the second inductor, the fifth inductor and the sixth inductor form a second coupling circuit, the second inductor is respectively coupled with the fifth inductor and the sixth inductor, the fifth inductor is connected with a second signal demodulation circuit, and the sixth inductor is connected with a second signal generator.

In some embodiments, the first wireless assembly further includes a fifth capacitor coupled in parallel across the third inductor, and the second wireless assembly further includes a sixth capacitor coupled in parallel across the fifth inductor.

In some embodiments, the first wireless assembly further includes a first dc blocking capacitor coupled between the fourth inductor and the second signal generator, and the second wireless assembly further includes a second dc blocking capacitor coupled between the sixth inductor and the second signal generator.

In some embodiments, the first wireless assembly further includes a first signal amplification circuit coupled between the first dc blocking capacitor and the first signal generator, and the second wireless assembly further includes a second signal amplification circuit coupled between the second dc blocking capacitor and the second signal generator.

In some embodiments, the first wireless assembly further comprises a seventh inductor coupled between the first coil and a power input, and the second wireless assembly further comprises an eighth inductor coupled between the second coil and the load.

In certain embodiments, the seventh inductor and the first coil together form a coil, and the eighth inductor and the second coil together form another coil.

Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of embodiments of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a household appliance according to an embodiment of the present invention;

fig. 2 is an exploded schematic view of a household appliance according to an embodiment of the present invention;

fig. 3 is a block diagram illustrating power transmission and bidirectional communication of a wireless transmission device according to an embodiment of the present invention;

fig. 4 is a schematic circuit diagram of a wireless transmission device according to an embodiment of the present invention;

fig. 5 is a schematic diagram of another circuit structure of the wireless transmission device according to the embodiment of the present invention;

fig. 6 is a schematic circuit diagram of a wireless transmission device according to an embodiment of the present invention;

fig. 7 is a schematic circuit diagram of a wireless transmission device according to an embodiment of the present invention;

fig. 8 is a schematic circuit diagram of a wireless transmission device according to an embodiment of the present invention.

Description of the main element symbols:

a household appliance 1000;

the wireless transmission device 100, the first cavity 200, the second cavity 300, the mounting bracket 400 and the rotating shaft 500;

a first wireless component 10, a first coil 11, a first capacitor 12, a first resonant circuit 13, a first inductor 14, a third capacitor 15, a third resonant circuit 16, a third inductor 17, a fourth inductor 18, a first coupling circuit 19, a first signal demodulation circuit 101, a first signal generator 102, a fifth capacitor 103, a seventh inductor 104, a first dc blocking capacitor 105, and a first signal amplification circuit 106;

a second radio module 20, a second coil 21, a second capacitor 22, a second resonant circuit 23, a second inductor 24, a fourth capacitor 25, a fourth resonant circuit 26, a fifth inductor 27, a sixth inductor 28, a second coupling circuit 29, a second signal demodulation circuit 201, a second signal generator 202, a sixth capacitor 203, an eighth inductor 204, a second dc blocking capacitor 205, a second signal amplification circuit 206, a second radio frequency circuit, and a radio frequency circuit,

A power input 30, a load 40.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The disclosure of the present invention provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to fig. 3, a household appliance 1000 according to an embodiment of the present invention includes a first cavity 200, a second cavity 300, and a wireless transmission device 100. The second chamber 300 is rotatably connected to the first chamber 200. The wireless transmission device 100 includes a first wireless component 10 and a second wireless component 20, the first wireless component 10 disposed on the first cavity 200 and the second wireless component 20 disposed on the second cavity 300, wherein the wireless transmission device 100 is configured such that the first wireless component 10 transmits powering energy to the second wireless component 20 and the first wireless component 10 and the second wireless component 20 are in bidirectional communication. Specifically, the household appliance 1000 may be a laundry processing appliance such as a washing machine, a dryer, or other household appliances 1000 having a rotatable second cavity 300, and the second cavity 300 may be used for placing articles, such as clothes, a quilt, or other articles needing to be washed.

It is understood that in a household appliance such as a washing machine, in which an inner tub rotates inside an outer tub, in the related art, power is supplied to electrical elements provided on the inner tub, for example, to a balancer provided on the inner tub, in a wireless power supply manner. In such a solution, in order to implement communication between the electric components such as the balancer and the controller on the outer tub (e.g. voltage stabilization, control of the balancer to stop or move, etc.), it is usually necessary to add an additional communication module to implement information interaction, however, this increases the cost.

In the household electrical appliance 1000 of the present embodiment, on one hand, the first wireless component 10 of the wireless transmission device 100 can transmit power to the second wireless component 20 to supply power to the electrical components on the second cavity 300, for example, to a balancer (not shown) disposed on the second cavity 300, and on the other hand, the first wireless component 10 can also perform bidirectional communication with the second wireless component 20 to transmit information between the electrical components on the first cavity 200 and the electrical components on the second cavity 300. In this way, the wireless transmission device 100 can realize signal transmission while realizing power supply, and the household appliance 1000 does not need to additionally provide a communication module for signal transmission, thereby saving cost.

Specifically, use domestic appliance 1000 as washing machine as an example, in the utility model discloses an embodiment, first cavity 200 is the outer bucket of washing machine, and second cavity 300 is the interior bucket of washing machine, thereby second cavity 300 sets up in first cavity 200 and can rotate in first cavity 200 and realize washing, rinsing and the dehydration to placing the underwear thing in second cavity 300. Since the laundry in the second chamber 300 is distributed unevenly, there is an eccentricity. When the second chamber 300 rotates at a high speed, a large vibration is generated. Generally, a balancing assembly is installed on the second chamber 300, the balancing assembly is provided with a movable balancer, and the eccentric center of the laundry in the second chamber 300 can be balanced by controlling the movement of the balancer and depending on the self-gravity and the centripetal force of the balancer, so that the vibration of the second chamber 300 tends to be reduced, and the noise and the vibration of the washing machine are reduced.

In this embodiment, the first wireless component 10 is disposed on the first cavity 200 and connected to an external power source, the first wireless component 10 is fixed to the first cavity 200, the second wireless component 20 is disposed on the second cavity 300, the second wireless component 20 is fixed to the second cavity 300, the second wireless component 20 can rotate with respect to the first cavity 200 along with the second cavity 300, the second wireless component 20 is electrically connected to a balancer (not shown) disposed on the second cavity 300, and the first wireless component 10 can transmit power to the second wireless component 20 to transmit power, so that the second wireless component 20 can supply power to the balancer, thereby driving the balancer to move to balance the eccentric mass. Meanwhile, in order to accurately control the position of the balancer, it is necessary to detect the position of the balancer to transmit a position signal of the balancer to the control board provided on the first chamber 200, and in order to implement voltage feedback, it is necessary to feed back the output voltage of the second wireless module 20 to the control board on the first chamber 200 for voltage regulation. In the related art, the transmission of information, such as the feedback of voltage, etc., is generally achieved by adding a communication module to the first cavity 200 and the second cavity 300, respectively. However, in the embodiment of the present invention, the first wireless component 10 can transmit the power supply energy to the second wireless component 20 to realize power supply, and can also perform two-way communication with the second wireless component 20 to realize information transmission, such as voltage feedback, position feedback, temperature feedback, control instruction transmission, etc., without the need of additionally providing a communication module, thereby saving cost.

It should be noted that in this document, "the first wireless component 10 is disposed on the first cavity 200, and the second wireless component 20 is disposed on the second cavity 300" may be understood as that the first wireless component 10 is fixed relative to the first cavity 200, and the second wireless component 20 is fixed relative to the second cavity 300. Specifically, the first wireless module 10 may be directly fixed to the first cavity 200 or fixed to the first cavity 200 through other intermediate components, such as a mounting plate, and the second wireless module 20 may be mounted in the same manner as or different from the first wireless module 10, and only the second wireless module 20 needs to be fixed with respect to the second cavity 300.

Referring to fig. 4, in some embodiments, the first wireless component 10 includes a first coil 11, the first coil 11 is connected to the power input terminal 30, the second wireless component 20 includes a second coil 21, the second coil 21 is connected to the load 40, and the wireless transmission device 100 is configured to transmit power to the second coil 21 through the first coil 11 and to bidirectionally communicate through the first coil 11 and the second coil 21.

In this way, the first wireless module 10 can transmit wireless power to the second coil 21 of the second wireless module 20 through the first coil 11, so that the second coil 21 generates power to supply power to the load 40, and meanwhile, the first coil 11 and the second coil 21 can perform bidirectional communication, so that each wireless module can simultaneously realize power supply and bidirectional communication by using a single coil, thereby further saving the cost.

Specifically, in the embodiment of the present invention, the first coil 11 and the second coil 21 may also use the principle of magnetic resonance to transmit electric energy. In such an example, the first coil 11 and the first coil 11 are both resonant coils, the first coil 11 can radiate an electromagnetic field during vibration, and the second coil 21 resonates with the first coil 11 to generate current and then convert the current into electric energy, thereby realizing power transmission.

It is understood that in other embodiments, the first coil 11 and the second coil 21 may use the principle of electromagnetic induction for the transmission of electric energy. In such an example, the first coil 11 is a transmitting coil and the second coil 21 is a receiving coil. The first coil 11 is connected to the power input terminal 30, the power input terminal 30 can provide alternating current to the first coil 11, the first coil 11 can generate a constantly changing magnetic field after receiving the alternating current, and the second coil 21 can generate an induced current when sensing the change of the magnetic field, so that power transmission is realized.

It can be understood that in the embodiment of the present invention, the first coil 11 and the second coil 21 are disposed at an interval, the first coil 11 is fixed on the first cavity 200, the second coil 21 is fixed on the second cavity 300 and can rotate along with the second cavity 300, when the second cavity 300 rotates relative to the first cavity 200, there is always an overlapping portion between the first coil 11 and the second coil 21, that is, when the second cavity 300 rotates, the first coil 11 and the second coil 21 can also realize power transmission and two-way communication. Specifically, in one example, the first coil 11 is fixedly mounted on the first cavity 200, and the central axis of the first coil 11 coincides with the rotation axis L of the second cavity 300 or the eccentricity of the first coil and the second coil 11 is within a desired range, and the second coil 21 also coincides with the rotation axis L of the second cavity 300 or the eccentricity of the second coil and the second coil 21 is within a desired range, so that the first coil 11 and the second coil 21 can achieve stable power supply and bidirectional communication no matter what state the second cavity 300 is.

Specifically, referring to fig. 2, in some embodiments, the household appliance 1000 includes a mounting bracket 400, the mounting bracket 400 is mounted on the first cavity 200, and the first coil 11 is mounted on the mounting bracket 400, so that the first coil 11 is fixedly mounted on the first cavity 200. In addition, household appliance 1000 still includes pivot 500, pivot 500 can wear to establish first cavity 200 with rotating, be fixed with support frame 600 on the second cavity 300, support frame 600 and second cavity 300 fixed connection, pivot 500 and support frame 600 fixed connection, under the pivoted condition of pivot 500, can drive support frame 600 and rotate and then drive the relative first cavity 200 rotation of second cavity 300, second coil 21 installs the end at pivot 500, in the embodiment of figure, first coil 11, second coil 21 and the equal coaxial setting of pivot 500 three, that is, the central axis of first coil 11 and second coil 21 and the rotation axis L coincidence of pivot 500 and second cavity 300.

It is understood that in such an embodiment, the household appliance 1000 further includes a housing (not shown) and a driving device 700, the first cavity 200 is disposed in the housing and fixedly connected with the housing, the driving device 700 is disposed on the housing and connected with the rotating shaft 500, and the driving device 700 can drive the rotating shaft 500 to rotate, so as to drive the second cavity 300 to rotate in the first cavity 200. Specifically, the driving device 700 may be a motor, and the motor may be connected to the rotation shaft 500 through a transmission belt, so as to drive the rotation shaft 500 through a belt transmission manner, thereby implementing high-speed rotation of the second chamber 300.

In an embodiment of the present invention, the load 40 may be an electrical component on the second chamber 300, such as a battery, a motor, a controller, a sensor, etc. of the balancer, and the electric energy generated by the second coil 21 may be stored in the battery or directly supplied to the motor of the balancer to drive the balancer to rotate to balance the eccentric mass.

Further, referring to fig. 4, in some embodiments, the first wireless component 10 further includes a first capacitor 12, and the first capacitor 12 and the first coil 11 are connected in series to form a first resonant circuit 13. The second radio component 20 further comprises a second capacitor 22, which second capacitor 22 and the second coil 21 are connected in series to form a second resonant circuit 23. Wherein the first resonance circuit 13 is configured to transmit the supply energy to the second coil 21 via the first coil 11, and the second resonance circuit 23 is configured to receive the supply energy transmitted by the first coil 11 via the second coil 21.

Thus, the first resonance circuit 13 generates resonance waves by the first coil 11, and the second coil 21 of the second resonance circuit 23 resonates with the first coil 11 to generate a current to realize power transmission.

Specifically, one end of the first capacitor 12 is connected to the first coil 11, and the other end is grounded. It will be appreciated that the resonant frequency of the second resonant circuit 23 is the same as the resonant frequency of the first resonant circuit 13. It should be noted that the power supply energy described herein refers to electromagnetic wave energy emitted by the first coil 11, for example, the first coil 11 generates electromagnetic waves, the second coil 21 resonates with the first coil 11, so as to generate an induced current, and for example, the first coil 11 generates a changing magnetic field, so as to cause the second coil 21 to generate an induced current.

Still further, referring to fig. 4, in some embodiments, the first wireless component 10 further includes a first inductor 14 and a third capacitor 15, the first inductor 14 and the third capacitor 15 are connected in series and then connected in parallel to two ends of the first coil 11, and the first coil 11, the first inductor 14 and the third capacitor 15 together form a third resonant circuit 16. The second wireless module 20 further comprises a second inductor 24 and a fourth capacitor 25, the second inductor 24 and the fourth capacitor 25 are connected in series and then connected in parallel to two ends of the second coil 21, and the second coil 21, the second inductor 24 and the fourth capacitor 25 together form a fourth resonant circuit 26.

In this way, bidirectional transmission of signals and commands can be stably realized by the third resonance circuit 16 and the fourth resonance circuit 26. It is to be understood that in the embodiment of the present invention, the resonant frequency of third resonant circuit 16 is the same as the resonant frequency of fourth resonant circuit 26.

Specifically, in such an embodiment, the first coil 11 forms a different resonant circuit with a different inductance and capacitance, respectively, that is, the first resonant circuit 13 and the third resonant circuit 16, and the second coil 21 forms a different resonant circuit with a different inductance and capacitance, that is, the second resonant circuit 23 and the fourth resonant circuit 26, respectively, so that the first resonant circuit 13 can transmit the supply energy to the second coil 21 through the first coil 11, thereby causing the second coil 21 of the second resonant circuit 23 to generate the induced current to supply the load 40. The third resonant circuit 16 can communicate with the second coil 21 of the fourth resonant circuit 26 through the first coil 11, so as to realize bidirectional transmission of signals and instructions, and thus, the transmission of electric energy and the bidirectional transmission of signal instructions can be simultaneously realized by adopting one first coil 11 and one second coil 21, and the structure is simple, and the cost is low.

It will be appreciated that in some embodiments the resonant frequency at which the first coil 11 transmits the supply energy is different to the resonant frequency of the first coil 11 when in two-way communication with the second coil 21.

In this way, the first coil 11 can generate different resonant frequencies to realize bidirectional transmission of power and signals, so that interference is not generated when power transmission and bidirectional transmission of signals are performed.

Specifically, when power transmission is performed, the first resonant circuit 13 may enable the first coil 11 to generate a resonant wave with a specific frequency, for example, a resonant wave with a frequency of 100KHz, while the resonant frequency of the second resonant circuit 23 is the same as the resonant frequency of the first coil 11, so as to enable an induced current to be generated in the second coil 21 to achieve power transmission. In signal transmission, the third resonant circuit 16 may enable the first coil 11 to generate a resonant wave with another specific frequency, for example, a resonant wave with a frequency of 1MHz, and the resonant frequency of the fourth resonant circuit 26 is the same as the resonant evaluation of the first coil 11, so as to implement bidirectional signal transmission, for example, the fourth resonant circuit 26 may enable the battery voltage feedback signal of the balancer to be transmitted to the third resonant circuit 16 through the second coil 21, so that the control board installed on the first cavity 200 performs voltage stabilization according to the voltage feedback signal.

In some embodiments, the resonant frequency of the first coil 11 when communicating with the second coil 21 is greater than or equal to 10 times the resonant frequency of the first coil 11 when transmitting the supply energy.

In this way, when performing communication, the resonance frequency of the first coil 11 is high, and the first coil 11 can perform not only power transmission but also high-speed data transmission.

Specifically, in one example, the resonant frequency of the first coil 11 when power transmission is possible is 100KHz, and the resonant frequency of the first coil 11 when communication is performed is 1MHz, so that the carrier frequency at the time of communication is 10 times the frequency at the time of power transmission, the communication rate is faster, the transmission rate is higher than the communication rate by using a communication method such as bluetooth communication or infrared communication, and the communication rate of the first coil 11 and the second coil 21 is equal to or higher than 9600 baud rate.

Referring to fig. 5, in some embodiments, the first wireless component 10 further includes a third inductor 17 and a fourth inductor 18, the first inductor 14, the third inductor 17 and the fourth inductor 18 form a first coupling circuit 19, the first inductor 14 is coupled to the third inductor 17 and the fourth inductor 18, the third inductor 17 is connected to the first signal demodulation circuit 101, and the fourth inductor 18 is connected to the first signal generator 102. The second radio component 20 further comprises a fifth inductor 27 and a sixth inductor 28, the second inductor 24, the fifth inductor 27 and the sixth inductor 28 form a second coupling circuit 29, the second inductor 24 is coupled to the fifth inductor 27 and the sixth inductor 28, respectively, the fifth inductor 27 is connected to the second signal demodulation circuit 201, and the sixth inductor 28 is connected to the second signal generator 202.

In this way, the first coupling circuit 19 may enable the first wireless component 10 to transmit the communication signal received by the first coil 11 to the first signal demodulation circuit 101 through the coupling of the first inductor 14 and the third inductor 17, so as to implement demodulation of the signal, and may also transmit the communication signal transmitted by the first signal generator 102 to the first coil 11 through the coupling of the first inductor 14 and the fourth inductor 18, so as to transmit the communication signal to the second coil 21.

The second coupling circuit 29 may enable the second wireless component 20 to transmit the communication signal received by the second coil 21 to the second signal demodulating circuit 201 through the coupling of the second inductor 24 and the fifth inductor 27, so as to demodulate the signal, and may also transmit the communication signal transmitted by the second signal generator 202 to the second coil 21 through the coupling of the second inductor 24 and the sixth inductor 28, so as to transmit the communication signal to the first coil 11.

Specifically, in the embodiment of the present invention, the first inductor 14, the third inductor 17 and the fourth inductor 18 together constitute a mutual inductance coupler, and the second inductor 24, the fifth inductor 27 and the sixth inductor 28 constitute another mutual inductance coupler. One end of the third inductor 17 is connected to the first signal demodulation circuit 101, and the other end is grounded, and one end of the fourth inductor 18 is connected to the first signal generator 102, and the other end is grounded. One end of the fifth inductor 27 is connected to the second signal demodulation circuit 201, and the other end is grounded, and one end of the sixth inductor 28 is connected to the second signal generator 202, and the other end is grounded.

The signal transmitted by the first wireless assembly 10 may be generated by a control board disposed on the first chamber 200, such as a control board for controlling the rotation speed of the second chamber 300. The signal transmitted by the second radio assembly 20 may be generated by a control board disposed on the second chamber 300, such as a control circuit board of a counterpoise.

In this embodiment, the first signal generator 102 is connected to a transmitting port provided on a control board disposed on the first cavity 200, the first signal demodulating circuit 101 is connected to a receiving port of the control board, during the process of transmitting a communication signal to the second radio assembly 20 by the first radio assembly 10, the first signal generator 101 generates a resonance signal after receiving the control signal and transmits the resonance signal to the fourth inductor 18, the fourth inductor 18 transmits the resonance signal to the first inductor 14 coupled thereto, the third resonance circuit 16 transmits the resonance signal to the second coil 21 through the first coil 11, and then the fourth resonance circuit 26 transmits the resonance signal to the fifth inductor 27 through the second inductor 24, the fifth inductor 27 transmits the resonance signal to the second signal demodulating circuit 201, the second signal demodulating circuit 201 demodulates the signal, and then transmits the signal to the control board disposed on the second cavity 300, and further realize the transmission of signals.

The second signal generator 202 is connected to a transmitting port of a control board provided on the second chamber 300, the second signal demodulating circuit 201 is connected to a receiving port of the control board, during the process of sending the communication signal from the second radio assembly 20 to the first radio assembly 10, the second signal generator 202 receives the control signal and generates a resonance signal to be transmitted to the sixth inductor 28, the sixth inductor 28 transmits the resonance signal to the second inductor 24 coupled thereto, the fourth resonance circuit 26 transmits the resonance signal to the first coil 11 via the second coil 21, the third resonance circuit 16 then passes the resonance signal via the first inductance 14 to the third inductance 17, the third inductance 17 passes the resonance signal to the first signal demodulation circuit 101, the first signal demodulation circuit 101 demodulates the signal, and then transmits the signal to a control board disposed on the first chamber 200, thereby implementing the transmission of the signal.

Referring to fig. 5, further, in some embodiments, the first wireless component 10 further includes a fifth capacitor 103, the fifth capacitor 103 is connected in parallel across the third inductor 17, the second wireless component 20 further includes a sixth capacitor 203, and the sixth capacitor 203 is connected in parallel across the fifth inductor 27.

In this way, the fifth capacitor 103 and the third inductor 17 form a resonant circuit so that the third inductor 17 can receive the resonant signal generated by the first inductor 14, and further transmit the resonant signal to the first signal demodulation circuit 101 for demodulation. The sixth capacitor 203 and the fifth inductor 27 form another resonant circuit so that the fifth inductor 27 can receive the resonant signal generated by the second inductor 24, and then transmit the resonant signal to the second signal demodulation circuit 201 for demodulation.

Referring to fig. 6, in some embodiments, the first wireless component 10 further includes a seventh inductor 104, the seventh inductor 104 is connected between the first coil 11 and the power input terminal 30, and the second wireless component 20 further includes an eighth inductor 204, and the eighth inductor 204 is connected between the second coil 21 and the load 40.

Thus, the seventh inductor 104 may separate the first coil 11 from the power input terminal 30, so as to prevent the electric signal received or generated by the first coil 11 from being short-circuited and directly transmitted to the power input terminal 30, so that the first inductor 14 loses the communication function, and the eighth inductor 204 may separate the second coil 21 from the load 40, so as to prevent the signal received or generated by the second coil 21 from being directly transmitted to the load 40, so that the second coil 21 loses the communication function.

It is to be understood that, in such an embodiment, the seventh inductor 104 and the eighth inductor 204 may also be both coils, so that the seventh inductor 104 can also transmit the supply energy to the eighth inductor 204 to realize the transmission of the electric energy.

Further, in some embodiments, the seventh inductor 104 and the first coil 11 together form a coil, and the eighth inductor 204 and the second coil 21 together form another coil.

Thus, the seventh inductor 104 and the first coil 11 can adopt a single wire coil without arranging two separate coils, and the eighth inductor 204 and the second coil 21 can also adopt a single wire coil without arranging two separate coils, so that the practicability is simpler.

Specifically, in such an embodiment, the seventh inductor 104 and the first coil 11 are connected to an integral coil, which is two different parts of the same coil, and during the connection process, one end of the first inductor 14 may be connected to a certain position of the coil, so as to divide the coil into the first coil 11 and the seventh inductor 104, and the position of the coil to which the first inductor 14 is connected may be determined according to the number of turns of the first coil 11 and the seventh inductor 104. The eighth inductor 204 and the second coil 21 are also integrally connected wire coils which are two different parts of the same wire coil, and one end of the second inductor 24 can be connected to a certain part of the wire coil in the connection process, so that the wire coil is divided into the second coil 21 and the eighth inductor 204. The position of the wire coil to which the second inductor 24 is connected may be determined according to the number of turns of the second coil 21 and the eighth inductor 204.

Referring to fig. 7, in some embodiments, the first wireless component 10 further includes a first dc blocking capacitor 105, the first dc blocking capacitor 105 is connected between the fourth inductor 18 and the second signal generator 202, and the second wireless component 20 further includes a second dc blocking capacitor 205, the second dc blocking capacitor 205 is connected between the sixth inductor 28 and the second signal generator 202.

In this way, the first dc blocking capacitor 105 and the second dc blocking capacitor 205 can isolate the dc signal and prevent the internal unit from being burnt out by the dc input in the circuit by the ac signal.

Referring to fig. 8, in some embodiments, the first wireless component 10 further includes a first signal amplifying circuit 106, the first signal amplifying circuit 106 is connected between the first dc blocking capacitor 105 and the first signal generator 102, the second wireless component 20 further includes a second signal amplifying circuit 206, and the second signal amplifying circuit 206 is connected between the second dc blocking capacitor 205 and the second signal generator 202.

In this way, the first signal amplifying circuit 106 can amplify the signal of the first signal generator 102, and the second signal amplifying circuit 206 can amplify the signal of the second signal generator 202, so as to obtain a signal with a specific frequency, for example, a signal with a frequency of 1 MHz.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (12)

1. A household appliance, characterized in that it comprises:

a first cavity;

a second cavity rotatably connected to the first cavity; and

a wireless transmission device comprising a first wireless component disposed on the first cavity and a second wireless component disposed on the second cavity;

wherein the wireless transmission device is configured such that the first wireless component transmits powering energy to the second wireless component and the first and second wireless components communicate bi-directionally.

2. The household appliance according to claim 1, wherein the first wireless component comprises a first coil connected to a power input, the second wireless component comprises a second coil connected to a load, the wireless transmission means is configured to transmit powering energy to the second coil through the first coil, and to communicate bidirectionally through the first coil and the second coil.

3. The household appliance according to claim 2, wherein the first wireless component further comprises a first capacitor, and the first capacitor and the first coil are connected in series to form a first resonant circuit;

the second wireless component further comprises a second capacitor, and the second capacitor and the second coil are connected in series to form a second resonant circuit;

wherein the first resonance circuit is configured to transmit the supply energy to the second coil through the first coil, and the second resonance circuit is configured to receive the supply energy transmitted by the first coil through the second coil.

4. The household appliance according to claim 3, wherein the first wireless component further comprises a first inductor and a third capacitor, the first inductor and the third capacitor are connected in series and then connected in parallel to two ends of the first coil, and the first coil, the first inductor and the third capacitor together form a third resonant circuit;

the second wireless assembly further comprises a second inductor and a fourth capacitor, the second inductor and the fourth capacitor are connected in series and then connected in parallel at two ends of the second coil, and the second coil, the second inductor and the fourth capacitor jointly form a fourth resonant circuit.

5. A household appliance according to claim 4, characterized in that the resonance frequency at which the first coil emits the supply energy is different from the resonance frequency of the first coil when communicating bi-directionally with the second coil.

6. A household appliance according to claim 5, characterized in that the resonance frequency of the first coil when communicating with the second coil is greater than or equal to 10 times the resonance frequency of the first coil when transmitting the supply energy.

7. The household appliance according to claim 4, wherein the first wireless component further comprises a third inductor and a fourth inductor, the first inductor, the third inductor and the fourth inductor form a first coupling circuit, the first inductor is respectively coupled with the third inductor and the fourth inductor, the third inductor is connected with a first signal demodulation circuit, and the fourth inductor is connected with a first signal generator;

the second wireless assembly further comprises a fifth inductor and a sixth inductor, the second inductor, the fifth inductor and the sixth inductor form a second coupling circuit, the second inductor is respectively coupled with the fifth inductor and the sixth inductor, the fifth inductor is connected with a second signal demodulation circuit, and the sixth inductor is connected with a second signal generator.

8. The household appliance of claim 7, wherein the first wireless component further comprises a fifth capacitor connected in parallel across the third inductor, and wherein the second wireless component further comprises a sixth capacitor connected in parallel across the fifth inductor.

9. The household appliance of claim 7, wherein the first wireless assembly further comprises a first dc blocking capacitor connected between the fourth inductor and the second signal generator, and wherein the second wireless assembly further comprises a second dc blocking capacitor connected between the sixth inductor and the second signal generator.

10. The household appliance of claim 9, wherein the first wireless assembly further comprises a first signal amplification circuit connected between the first dc blocking capacitor and the first signal generator, and wherein the second wireless assembly further comprises a second signal amplification circuit connected between the second dc blocking capacitor and the second signal generator.

11. The household appliance of claim 4, wherein the first wireless component further comprises a seventh inductor connected between the first coil and a power input, and wherein the second wireless component further comprises an eighth inductor connected between the second coil and the load.

12. The household appliance according to claim 11, wherein the seventh inductor and the first coil together form a coil, and the eighth inductor and the second coil together form another coil.

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