CN211947603U - Drum washing machine - Google Patents
Drum washing machine Download PDFInfo
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- CN211947603U CN211947603U CN202020042467.3U CN202020042467U CN211947603U CN 211947603 U CN211947603 U CN 211947603U CN 202020042467 U CN202020042467 U CN 202020042467U CN 211947603 U CN211947603 U CN 211947603U
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Abstract
The embodiment of the utility model discloses drum type washing machine relates to drum type washing machine technical field. The drum washing machine is used for solving the problem that a user is complicated and inconvenient to operate when using the drum washing machine in the related technology. The drum washing machine includes: the two ends of the control circuit are respectively connected with the live wire connecting end and the zero line connecting end of the drum washing machine in a one-to-one correspondence manner; the control switch is arranged on the control circuit; the roller door lock comprises a door lock switch and a driving element, and the door lock switch is arranged on the connecting line; the driving element is arranged on a control circuit between the live wire connecting end and the control switch; the door state switch is arranged on a control circuit between the live wire connecting end and the control switch; and the gate state detection circuits are electrically connected with the second input end and the control circuit positioned between the gate state switch and the control switch. The utility model can be used for washing clothes.
Description
Technical Field
The utility model relates to a drum type washing machine technical field especially relates to a drum type washing machine.
Background
The drum washing machine originates from Europe, and the washing method is that electric energy is utilized to drive the drum to rotate so that clothes in the drum move up and down under the action of gravity, and the principle that a stick hammer strikes the clothes is simulated, so that dirt on the surfaces of the clothes is cleaned.
Fig. 1 shows a control circuit of a drum washing machine in the related art, including: a control unit 01, the control unit 01 having a first input terminal 011, a second input terminal 012, a first output terminal 016 and a second output terminal 017; the control circuit 02, two ends of the control circuit 02 are respectively connected with a live wire connecting end L and a zero line connecting end N of the drum washing machine in a one-to-one correspondence manner; the control switch 03, the control switch 03 is arranged on the control circuit 02; the control switch driving circuit 04, the control switch driving circuit 04 are electrically connected with the first output end 016 and the control switch 03; the door lock detection circuit 05a is electrically connected with the first input end 011 and is electrically connected with the live wire connecting end L through a connecting circuit 05 b; a drum door lock 06, the drum door lock 06 including a door lock switch 061 and a driving element 062, the door lock switch 061 being disposed on the connection line 05b and configured to control switching of the drum door between a locked state and an unlocked state when the drum door is in a closed state; the driving element 062 is provided on the control line 02 between the live line connection end L and the control switch 03, and is configured to control switching of the open/closed state of the door lock switch 061; the key detection circuit 07 is electrically connected with the second input end 012 and the key control panel; the down lamp driving circuit 09 and the down lamp driving circuit 09 are electrically connected with the second output end 017 and the down lamp 08.
When the washing machine is used, a user puts clothes to be washed into the roller, closes the roller door, then presses the power key to start the washing machine, the control unit 01 drives the down lamp 08 to open through the down lamp driving circuit 09, and after a period of time delay, the down lamp 08 is automatically closed; after a user presses a start key, the control unit 01 receives an electric signal fed back by the key detection circuit 07, controls the first output end 016 to output the electric signal, so that the control switch 03 is closed, the control circuit 02 is conducted at the moment, the driving element 062 on the control circuit 02 works to drive the door lock switch 061 to be closed, the roller door is locked, then the door lock detection circuit 05a feeds back an electric signal generated after the door lock switch 061 is closed to the control unit 01, and the control unit 01 starts a washing program according to the fed-back electric signal.
The inventor of the application finds that when the drum washing machine washes clothes, a user needs to open and close the drum door, press the power key, press the start key and the like, and the operation is complex, so that the use experience of the user is not improved.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a drum type washing machine for solve the user complicated operation inconvenient problem when using drum type washing machine among the correlation technique.
In order to achieve the above object, an embodiment of the present invention provides a drum washing machine, including having a box body for putting in clothes, setting up in drum in the box body and set up in the drum door of department is put in to the clothes, still include: a control unit having a first input, a second input, and a first output; the two ends of the control circuit are respectively connected with the live wire connecting end and the zero line connecting end of the drum washing machine in a one-to-one correspondence manner; the control switch is arranged on the control circuit; the control switch driving circuits are electrically connected with the first output end and the control switch; the door lock detection circuit is electrically connected with the first input end and is electrically connected with the live wire connecting end through a connecting circuit; the roller door lock comprises a door lock switch and a driving element, wherein the door lock switch is arranged on the connecting line and is configured to control the switching of the roller door in a locking state and an unlocking state when the roller door is in a closing state; the driving element is arranged on the control circuit between the live wire connecting end and the control switch and is configured to control the switching of the opening and closing states of the door lock switch; a door state switch disposed on the control line between the live line connection terminal and the control switch, and configured to be in a closed state when the drum door is closed, and to be in an open state when the drum door is opened; and the gate state detection circuits are electrically connected with the second input end and the control circuit positioned between the gate state switch and the control switch.
The embodiment of the utility model provides a drum type washing machine, through add door state switch and door state detection circuitry in drum type washing machine control circuit, be in when standby state at drum type washing machine like this, if the user opens the drum door and places the clothing to the cylinder in, door state detection circuitry just can feed back the signal of door state switch disconnection to the control unit so, the control unit just can start according to the signal of this feedback, the user just need not to make drum type washing machine start through pressing the power key when drum type washing machine is in standby state like this, the effect that the drum door can start is opened when having realized standby state, thereby the operation of user when using this drum type washing machine has been simplified, user's use experience has been improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a control circuit diagram in a related art drum washing machine;
fig. 2 is a control circuit diagram of the drum washing machine according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
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; the specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The embodiment of the utility model provides a drum type washing machine, including the box that has the clothing and put in the mouth, set up in the cylinder in the box and set up in the clothing and put in the drum door of mouth department.
As shown in fig. 2, the drum washing machine further includes: a control unit 1, the control unit 1 having a first input I1, a second input I2 and a first output O1; the two ends of the control circuit 2 are respectively connected with a live wire connecting end L and a zero line connecting end N of the drum washing machine in a one-to-one correspondence manner; the control switch 3a is arranged on the control circuit 2; the control switch driving circuits 3b, the control switch driving circuits 3b are all electrically connected with the first output end O1 and the control switch 3 a; the door lock detection circuit 4b is electrically connected with the first input end I1 and is electrically connected with the live wire connecting end L through a connecting circuit 4 c; a drum door lock 4a, the drum door lock 4a including a door lock switch 41 and a driving element 42, the door lock switch 41 being provided on the connection line 4c and configured to control switching of the drum door between a locked state and an unlocked state when the drum door is in a closed state; the driving element 42 is provided on the control line 2 between the live line connection terminal L and the control switch 3a, and is configured to control switching of the open/closed state of the door lock switch 41; a door state switch 5a, the door state switch 5a being disposed on the control line 2 between the live wire connection terminal L and the control switch 3a and configured to be in a closed state when the drum door is closed and to be in an open state when the drum door is opened; the gate state detection circuits 5b and 5b are electrically connected with the second input terminal I2 and the control line 2 between the gate state switch 5a and the control switch 3 a.
As shown in fig. 2, the drum washing machine further includes a key detection circuit 6; the control unit 1 further has a third input terminal I3, and the key detection circuit 6 is electrically connected to the third input terminal I3 and the key control panel.
The control unit 1 may be a single chip microcomputer or other control chips, and is not limited herein.
As shown in fig. 2, when the drum washing machine is in a standby state (i.e. the drum washing machine is powered on, and the control unit 1 is powered on), if a user opens the drum door to place clothes into the drum, the opening of the drum door will make the door state switch 5a in an off state, and at this time, the door state detection circuit 5b will feed back a signal of turning off the door state switch 5a to the control unit 1 through the second input terminal I2, and the control unit 1 can control the drum washing machine to be switched from the standby state to a power-on state (the power-on state is a state in which the control unit 1 opens components such as the control panel) according to the signal of turning off the door state switch 5a fed back by the door state detection circuit 5 b); after the drum washing machine is in a starting state, if a drum door is closed, at this time, if a user presses a start key, the key detection circuit 6 feeds back a start signal to the control unit 1, after the control unit 1 receives an electric signal fed back by the key detection circuit 6, the control unit 1 controls the first output end O1 to output the electric signal, so that the control switch 3a is closed, the control circuit 2 is in a path state, the driving element 42 on the control circuit 2 works to drive the door lock switch 41 to be closed, the drum door is locked, then the door lock detection circuit 4b feeds back the electric signal generated after the door lock switch 41 is closed to the control unit 1, and the control unit 1 starts a washing program according to the fed-back electric signal.
The embodiment of the utility model provides a drum type washing machine, through add door state switch 5a and door state detection circuit 5b in drum type washing machine control circuit, be in when drum type washing machine is in standby state like this, if the user opens the drum door and places the clothing to the cylinder in, door state detection circuit 5b just can feed back the signal of door state switch 5a disconnection to control unit 1 so, control unit 1 just can start according to the signal of this feedback, the user just need not to make drum type washing machine start through pressing the power key when drum type washing machine is in standby state like this, open the effect that the drum door can start when having realized standby state, thereby the operation of user when using this drum type washing machine has been simplified, user's use experience has been improved.
In order to facilitate the user to put the laundry into the drum, as shown in fig. 2, the control unit 1 further has a second output terminal O2; the drum washing machine further comprises a down lamp 7a for illumination in the drum and a down lamp driving circuit 7b electrically connected with both the down lamp 7a and the second output end O2. Therefore, after a user opens the drum door, the control unit 1 can feed back a signal of disconnection of the door state switch 5a to the control unit 1 according to the door state detection circuit 5b, the control unit 1 can send a driving signal to the down lamp driving circuit 7b according to the fed-back signal to light the down lamp 7a and illuminate the inside of the drum, so that the user obtains a good sight line in the drum, and the user can more easily put clothes to a specified position due to the good sight line, thereby ensuring the uniform putting of the clothes in the drum, and further ensuring the normal work of the drum washing machine.
It should be noted that: as shown in fig. 1, a down lamp 08 in a drum washing machine in the related art is lighted for a period of time according to a program after the drum washing machine is started, and the lighting of the down lamp 08 is not controlled by the opening and closing of a drum door, so that when a user opens the drum door to place clothes, the down lamp 08 cannot be timely opened, the inner sight line of the drum is not good, the clothes placed by the user are not uniform, and finally, the drum cannot be driven at a high speed and other faults are easily caused due to the unbalanced weight distribution of the drum; as shown in fig. 2, in the present application, by providing the door state switch 5a capable of feeding back the opening and closing state of the drum door, the control unit 1 can open and close the down lamp 7a according to the signal of the opening and closing condition of the drum door fed back by the door state detection circuit 5b, thereby well solving the problem that the drum laundry in the drum washing machine in the related art is easy to be dropped unevenly.
The type of the control switch 3a is not exclusive, for example, as shown in fig. 2, the control switch 3a may be a relay, the relay includes a coil 31 and a contact 32, the coil 31 is electrically connected to the control switch driving circuit 3b, and the contact 32 is disposed on the control line 2. When the control unit 1 sends a driving electrical signal to the control switch driving circuit 3b, the coil 31 is energized, and the contact 32 is closed, so that the control circuit 2 is switched from the open circuit to the closed circuit. The control switch 3a may be an electric switch, and when the control unit 1 sends a driving electric signal to the control switch driving circuit 3b, the electric switch is closed, so that the control line 2 is switched from the open circuit to the closed circuit. Compared with an electric switch, the relay realizes the opening and closing of the contact 32 in an electromagnetic mode, so that the number of parts is small, and the reliability is high.
The kind of the drum door lock 4a is not exclusive, and for example, as shown in fig. 2, the drum door lock 4a is a PTC door lock (thermistor), the driving element 42 is a PTC heating element of the PTC door lock, and the door lock switch 41 is a contact of the PTC door lock. After the control circuit 2 forms a passage, the PTC heating element generates heat, the acting force generated by the bimetallic strip connected with the PTC heating element due to the heated bending enables the reed to act, so that the contact is closed, meanwhile, the reed drives the limiting block to be clamped into the clamping groove, so that the washing machine door is locked, and at the moment, the drum door cannot be opened.
In addition, the roller door lock 4a may be an electromagnetic door lock, the driving element 42 may be the electromagnetic coil 31 of the electromagnetic door lock, and the door lock switch 41 may be a contact of the electromagnetic door lock.
The embodiment of the utility model provides an among the drum type washing machine, door state detection circuitry 5b can be for following: as shown in fig. 2, the gate state detection circuit 5b includes: the emitter of the first triode N1 is electrically connected with the grounding end; a first detection line 51, wherein the first detection line 51 is connected between the second input terminal I2 and the collector of the first transistor N1; a first voltage source V1; the first resistor R1, the first resistor R1 is connected between the first voltage source V1 and the collector of the first triode N1; a second detection line 52, wherein one end of the second detection line 52 is electrically connected with the base electrode of the first triode N1, and the other end is electrically connected with the control line 2 between the gate state switch 5a and the control switch 3 a; a second resistor R2, the second resistor R2 is disposed on the second detection line 52; a third detection line 53, wherein one end of the third detection line 53 is electrically connected with the emitter of the first triode N1, and the other end is electrically connected with the second detection line 52 which is positioned between the second resistor R2 and the base of the first triode N1; the third resistor R3 and the third resistor R3 are disposed on the third detection line 53. When the user opens the drum door, the door state switch 5a is turned off, the base of the first transistor N1 is at a low level, and the collector and the emitter of the first transistor N1 are turned off, so that the first detection line 51 feeds back a low level signal to the second input terminal I2, and the control unit 1 can control the drum washing machine to start up according to the low level signal and the stored program.
As shown in fig. 2, the gate state detection circuit 5b further includes: the first capacitor C1 and the first capacitor C1 are connected between the first detection line 51 and the ground. The first capacitor C1 can be used for filtering, so that the anti-interference capability of the gate state detection circuit 5b can be improved.
As shown in fig. 2, the gate state detection circuit 5b further includes: a second capacitor C2, a second capacitor C2 and a third resistor R3 are connected in parallel. The second capacitor C2 also serves as a filter, so that the immunity of the gate state detection circuit 5b can be further increased.
As shown in fig. 2, the gate state detection circuit 5b further includes: a first diode D1, a first diode D1 and a third resistor R3 are connected in parallel, and the anode of the first diode D1 is electrically connected with the emitter of the first triode N1, and the cathode is electrically connected with the base of the first triode N1. The first diode D1 is provided to prevent reverse voltage from being generated, thereby protecting the first transistor N1.
As shown in fig. 2, the gate state detection circuit 5b further includes: in the fourth resistor R4, a fourth resistor R4 is disposed on the first detection line 51. The fourth resistor R4 is provided to limit the current and prevent the current on the first detection line 51 from being too large.
In the gate state detection circuit 5b, one or more of the first capacitor C1, the second capacitor C2, the first diode D1, and the fourth resistor R4 may be further provided according to practical situations.
The embodiment of the utility model provides an among the drum type washing machine, lock detection circuitry 4b can be for following: as shown in fig. 2, the door lock detection circuit 4b includes: the emitter of the second triode N2 is connected with the ground terminal, and the collector of the second triode N2 is electrically connected with the first input end I1; a second voltage source V2; the fifth resistor R5, the fifth resistor R5 is connected between the second voltage source V2 and the collector of the second triode N2; a fourth detection line 43, one end of the fourth detection line 43 is connected to the base of the second transistor N2, and the other end is electrically connected to the connection line 4 c; a sixth resistor R6, the sixth resistor R6 being disposed on the fourth detection line 43; a fifth detection circuit 44, wherein one end of the fifth detection circuit 44 is connected to the emitter of the second transistor N2, and the other end is connected to the fourth detection circuit 43, and is located between the sixth resistor R6 and the base of the second transistor N2; the seventh resistor R7 and the seventh resistor R7 are disposed on the fifth detection line 44. When the door lock switch 41 is closed, the potential at the base of the second transistor N2 is at a high level, and the collector and the emitter of the second transistor N2 are turned on, so that the collector of the second transistor N2 feeds back a high level signal of the first input terminal I1, and the control unit 1 can start the washing program according to the high level signal.
As shown in fig. 2, the door lock detection circuit 4b further includes: one electrode of the third capacitor C3 and the third capacitor C3 are connected between the first input terminal I1 and the collector of the second transistor N2, and the other electrode is electrically connected to the ground terminal. The third capacitor C3 can be used for filtering, so that the anti-interference capability of the door lock detection circuit 4b can be improved.
As shown in fig. 2, the door lock detection circuit 4b further includes: a fourth capacitor C4, a fourth capacitor C4 is connected in parallel with the seventh resistor R7. The fourth capacitor C4 can also be used for filtering, so that the interference immunity of the door lock detection circuit 4b can be further improved.
As shown in fig. 2, the door lock detection circuit 4b further includes: the third diode D3, the third diode D3 and the seventh resistor R7 are connected in parallel, and the anode of the third diode D3 is electrically connected to the emitter of the second triode N2, and the cathode is electrically connected to the base of the second triode N2. The third diode D3 is provided to prevent reverse voltage from being generated, thereby protecting the second transistor N2.
As shown in fig. 2, the door lock detection circuit 4b further includes: the eleventh resistor R11 and the eleventh resistor R11 are connected between the first input terminal I1 and the collector of the second transistor N2. The eleventh resistor R11 is provided to limit the current, so as to avoid an excessive current between the first input terminal I1 and the collector of the second transistor N2.
In the door lock detection circuit 4b, one or more of the third capacitor C3, the fourth capacitor C4, the third diode D3, and the eleventh resistor R11 may be further provided according to practical situations.
The embodiment of the utility model provides an among the drum type washing machine, control switch drive circuit 3b can be for following: as shown in fig. 2, the control switch drive circuit 3b includes: the emitter of the third triode N3 is electrically connected with the ground terminal, and the base of the third triode N3 is electrically connected with the first output end O1; the first end of the eighth resistor R8 is electrically connected with the emitter of the third triode N3, and the second end of the eighth resistor R8 is electrically connected with the base of the third triode N3; a third voltage source V3; a base electrode of the fourth triode N4 is electrically connected with a collector electrode of the third triode N3, and an emitting electrode of the fourth triode N4 is electrically connected with a third voltage source V3; a ninth resistor R9, wherein a first end of the ninth resistor R9 is electrically connected with the third voltage source V3, and a second end is electrically connected with the base of the fourth triode N4; a first driving line 33, one end of the first driving line 33 is electrically connected to the collector of the fourth transistor N4, and the other end is electrically connected to the ground terminal; wherein the coil 31 is arranged on the first drive line 33. In operation, the first output O1 of the control unit 1 sends a driving signal, the collector and the emitter of the third transistor N3 are connected, the base of the fourth transistor N4 is at a high level, the emitter and the collector of the fourth transistor N4 are connected, the first driving circuit 33 forms a path, and the coil 31 of the relay on the first driving circuit 33 is energized, so that the contact 32 of the relay is closed.
As shown in fig. 2, the control switch driving circuit 3b further includes a second diode D2, wherein an anode of the second diode D2 is electrically connected to the ground, and a cathode thereof is electrically connected to a collector of the fourth transistor N4. By providing the second diode D2, the reverse voltage can be eliminated, and the coil 31 of the relay can be protected.
As shown in fig. 2, the control switch driving circuit 3b further includes a twelfth resistor R12, a twelfth resistor R12 connected between the collector of the third transistor N3 and the base of the fourth transistor N4. The twelfth resistor R12 is arranged to play a role of current limiting, so as to avoid an excessive current between the collector of the third transistor N3 and the base of the fourth transistor N4.
As shown in fig. 2, the control switch driving circuit 3b further includes a thirteenth resistor R13 and a thirteenth resistor R13 connected between the base of the third transistor N3 and the first output terminal O1. The thirteenth resistor R13 is also used to limit the current, so as to avoid an excessive current between the base of the third transistor N3 and the first output terminal O1.
The embodiment of the utility model provides an among the drum type washing machine, down lamp drive circuit 7b can be for following: as shown in fig. 2, the downlight drive circuit 7b includes: an emitter of the fifth triode N5 is connected with a ground terminal, and a base of the fifth triode N5 is electrically connected with the second output end O2; a fourth voltage source V4; a second driving line 71, wherein the second driving line 71 is connected between the fourth voltage source V4 and the collector of the fifth transistor N5; a tenth resistor R10, wherein a first end of the tenth resistor R10 is electrically connected to an emitter of the fifth transistor N5, and a second end is electrically connected to a base of the fifth transistor N5; the down lamp 7a is disposed on the second drive line 71. When the drum-type lighting device works, the second output end O2 of the control unit 1 sends out a driving signal, the collector electrode and the emitter electrode of the fifth triode N5 are conducted, a path is formed between the second driving circuit 71 and the ground terminal, and the down lamp 7a on the second driving circuit 71 is electrified, so that the interior of the drum is illuminated.
As shown in fig. 2, the light control panel driving circuit 7b further includes a fourteenth resistor R14, and the fourteenth resistor R14 is disposed on the second driving circuit 71. The fourteenth resistor R14 is provided to limit the current, so as to avoid excessive current on the second driving line 71.
As shown in fig. 2, the tube light driving circuit 7b further includes a fifteenth resistor R15, and the fifteenth resistor R15 is connected between the base of the fifth transistor N5 and the second output terminal O2. The fifteenth resistor R15 is also arranged to limit the current, so as to avoid an excessive current between the base of the fifth transistor N5 and the second output terminal O2.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a drum type washing machine, including the box that has the clothing and throw in the mouth, set up in drum in the box and set up in the drum door of clothing throw in mouth department, its characterized in that still includes:
a control unit having a first input, a second input, and a first output;
the two ends of the control circuit are respectively connected with the live wire connecting end and the zero line connecting end of the drum washing machine in a one-to-one correspondence manner;
the control switch is arranged on the control circuit;
the control switch driving circuits are electrically connected with the first output end and the control switch;
the door lock detection circuit is electrically connected with the first input end and is electrically connected with the live wire connecting end through a connecting circuit;
the roller door lock comprises a door lock switch and a driving element, wherein the door lock switch is arranged on the connecting line and is configured to control the switching of the roller door in a locking state and an unlocking state when the roller door is in a closing state; the driving element is arranged on the control circuit between the live wire connecting end and the control switch and is configured to control the switching of the opening and closing states of the door lock switch;
a door state switch disposed on the control line between the live line connection terminal and the control switch, and configured to be in a closed state when the drum door is closed, and to be in an open state when the drum door is opened;
and the gate state detection circuits are electrically connected with the second input end and the control circuit positioned between the gate state switch and the control switch.
2. A drum washing machine according to claim 1, characterized in that the control unit further has a second output; the drum washing machine further comprises a down lamp used for lighting in the drum and a down lamp driving circuit electrically connected with the down lamp and the second output end.
3. A drum washing machine according to claim 1 or 2, characterized in that the control switch is a relay, the relay comprising a coil and a contact, the coil being electrically connected with the control switch driving circuit, the contact being provided on the control circuit.
4. A drum washing machine according to claim 1 or 2, characterized in that the drum door lock is a PTC door lock, the driving element is a PTC heating element of the PTC door lock, and the door lock switch is a contact of the PTC door lock.
5. A drum washing machine according to claim 1 or 2,
the gate state detection circuit includes:
the emitter of the first triode is electrically connected with a grounding end;
the first detection circuit is connected between the second input end and the collector of the first triode;
a first voltage source;
the first resistor is connected between the first voltage source and the collector of the first triode;
one end of the second detection circuit is electrically connected with the base electrode of the first triode, and the other end of the second detection circuit is electrically connected with the control circuit positioned between the gate state switch and the control switch;
the second resistor is arranged on the second detection circuit;
one end of the third detection circuit is electrically connected with the emitting electrode of the first triode, and the other end of the third detection circuit is electrically connected with the second detection circuit between the second resistor and the base electrode of the first triode;
and the third resistor is arranged on the third detection line.
6. A drum washing machine according to claim 5, characterized in that the door state detection circuit further comprises: at least one of a first capacitor, a second capacitor, a first diode and a fourth resistor;
the first capacitor is connected between the first detection circuit and a grounding end;
the second capacitor is connected with the third resistor in parallel;
the first diode is connected with the third resistor in parallel, the anode of the first diode is electrically connected with the emitter of the first triode, and the cathode of the first diode is electrically connected with the base of the first triode;
the fourth resistor is arranged on the first detection circuit.
7. A drum washing machine according to claim 1 or 2,
the door lock detection circuit includes:
the emitter of the second triode is connected with a grounding end, and the collector of the second triode is electrically connected with the first input end;
a second voltage source;
the fifth resistor is connected between the second voltage source and the collector of the second triode;
one end of the fourth detection circuit is connected with the base electrode of the second triode, and the other end of the fourth detection circuit is electrically connected with the connection circuit;
a sixth resistor disposed on the fourth detection line;
one end of the fifth detection circuit is connected with the emitting electrode of the second triode, the other end of the fifth detection circuit is connected with the fourth detection circuit, and the fifth detection circuit is positioned between the sixth resistor and the base electrode of the second triode;
a seventh resistor disposed on the fifth detection line.
8. A drum washing machine according to claim 3,
the control switch driving circuit includes:
the emitter of the third triode is electrically connected with a grounding end, and the base of the third triode is electrically connected with the first output end;
the first end of the eighth resistor is electrically connected with the emitter of the third triode, and the second end of the eighth resistor is electrically connected with the base of the third triode;
a third voltage source;
a base electrode of the fourth triode is electrically connected with a collector electrode of the third triode, and an emitting electrode of the fourth triode is electrically connected with the third voltage source;
a ninth resistor, a first end of which is electrically connected with the third voltage source and a second end of which is electrically connected with a base electrode of the fourth triode;
one end of the first driving circuit is electrically connected with a collector electrode of the fourth triode, and the other end of the first driving circuit is electrically connected with a grounding end;
wherein the coil is disposed on the first driving line.
9. A drum washing machine according to claim 8,
the control switch driving circuit further comprises a second diode, wherein the anode of the second diode is electrically connected with the grounding end, and the cathode of the second diode is electrically connected with the collector of the fourth triode.
10. A drum washing machine according to claim 2,
the down lamp drive circuit includes:
the emitter of the fifth triode is connected with the grounding end, and the base of the fifth triode is electrically connected with the second output end;
a fourth voltage source;
the second driving circuit is connected between the fourth voltage source and the collector of the fifth triode;
a tenth resistor, a first end of which is electrically connected with the emitter of the fifth triode, and a second end of which is electrically connected with the base of the fifth triode;
wherein, the down lamp is arranged on the second driving circuit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265843A (en) * | 2021-05-24 | 2021-08-17 | 海信（山东）冰箱有限公司 | Washing machine and control method thereof |
| CN114990842A (en) * | 2022-06-30 | 2022-09-02 | 南京创维电器研究院有限公司 | Door switch detection method of drum washing machine |
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2020
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113265843A (en) * | 2021-05-24 | 2021-08-17 | 海信（山东）冰箱有限公司 | Washing machine and control method thereof |
| CN113265843B (en) * | 2021-05-24 | 2022-09-27 | 海信冰箱有限公司 | Washing machine and control method thereof |
| CN114990842A (en) * | 2022-06-30 | 2022-09-02 | 南京创维电器研究院有限公司 | Door switch detection method of drum washing machine |
| CN114990842B (en) * | 2022-06-30 | 2024-03-26 | 南京创维电器研究院有限公司 | Door switch detection method for drum washing machine |
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