U.S. patent application number 16/471779 was filed with the patent office on 2021-09-09 for heating control system of multi-drum washing machine.
This patent application is currently assigned to QINGDAO HAIER DRUM WASHING MACHINE CO., LTD.. The applicant listed for this patent is QINGDAO HAIER DRUM WASHING MACHINE CO., LTD.. Invention is credited to Wenwei LI, Guanghui PAN, Guangfeng WANG, Haibo WANG, Yubao WANG, Jun WU.
Application Number | 20210277577 16/471779 |
Document ID | / |
Family ID | 1000005656289 |
Filed Date | 2021-09-09 |
United States Patent
Application |
20210277577 |
Kind Code |
A1 |
LI; Wenwei ; et al. |
September 9, 2021 |
HEATING CONTROL SYSTEM OF MULTI-DRUM WASHING MACHINE
Abstract
A multi-drum washing machine comprises at least two sets of
heating devices, and at least two detection units which are
correspondingly connected with the heating devices. Each detection
unit is used for detecting heating information of the corresponding
heating device and controlling at least one other heating device to
be turned on/off according to the heating information. The heating
control system of the multi-drum washing machine solves the problem
that it is difficult to detect heating devices in a multi-drum
washing machine, thus increasing the calculation burden of a
processor. The disclosure realizes real-time detection of the
heating devices through simple detection circuit hardware
connection on a circuit of each heating device. The circuits are
detected by using connection structures of circuit hardware,
thereby saving cost, improving the sensitivity of the detection
circuits and prolonging the service life of the processor of the
multi-drum washing machine.
Inventors: |
LI; Wenwei; (Shandong,
CN) ; WU; Jun; (Shandong, CN) ; WANG;
Haibo; (Shandong, CN) ; WANG; Guangfeng;
(Shandong, CN) ; WANG; Yubao; (Shandong, CN)
; PAN; Guanghui; (Shandong, CN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
QINGDAO HAIER DRUM WASHING MACHINE CO., LTD. |
Shandong |
|
CN |
|
|
Assignee: |
QINGDAO HAIER DRUM WASHING MACHINE
CO., LTD.
Shandong
CN
|
Family ID: |
1000005656289 |
Appl. No.: |
16/471779 |
Filed: |
December 21, 2017 |
PCT Filed: |
December 21, 2017 |
PCT NO: |
PCT/CN2017/117632 |
371 Date: |
June 20, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
D06F 34/10 20200201;
D06F 31/00 20130101; D06F 39/04 20130101; D06F 2103/52 20200201;
D06F 34/14 20200201; D06F 2105/28 20200201; D06F 33/30
20200201 |
International
Class: |
D06F 39/04 20060101
D06F039/04; D06F 31/00 20060101 D06F031/00; D06F 33/30 20060101
D06F033/30; D06F 34/10 20060101 D06F034/10; D06F 34/14 20060101
D06F034/14 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 21, 2016 |
CN |
201611191689.6 |
Claims
1. A heating control system of a multi-drum washing machine having
at least two sets of heating devices, comprising, at least two
detection units which are correspondingly connected with the
heating devices, wherein one of the detection units is used for
detecting heating information of one of the heating device, and, at
least one other heating device is controlled to be turned on/off
according to the heating information.
2. The heating control system of the multi-drum washing machine
according to claim 1, wherein a first detection unit, corresponding
to a first heating device, in the control system detects heating
information of the first heating device, and a second heating
device is controlled to be turned on/off according to the heating
information of the first heating device; wherein the first heating
device and the second heating device are arranged in parallel.
3. The heating control system of the multi-drum washing machine
according to claim 1, wherein each heating device comprises at
least one heating unit and a control unit corresponding to the
heating unit, one end of the heating unit is connected with a first
power supply, another end of the heating unit is connected with one
end of the control unit, and another end of the control unit is
connected with a second power supply; wherein the control unit is
used for controlling the heating unit to be turned on/off.
4. The heating control system of the multi-drum washing machine
according to claim 3, wherein the detection unit is arranged in
parallel with the control unit and is used for detecting electric
potential information of at least one end of the control unit.
5. The heating control system of the multi-drum washing machine
according to claim 3, wherein the heating unit comprises one or
more than one element selected from a group consisting of a heating
pipe, a heating wire, a heating rod and an electromagnetic
induction heating ring.
6. The heating control system of the multi-drum washing machine
according to claim 3, wherein the detection unit is a first
detection circuit, and an input end of the first detection circuit
is arranged between and connected with the heating unit and the
control unit.
7. The heating control system of the multi-drum washing machine
according to claim 6, wherein a connecting relation of the first
detection circuit is as follows: one end of a first resistor R is
connected with the input end, another end of the first resistor R
is connected with an output end and a capacitor C, and another end
of the capacitor C is grounded.
8. The heating control system of the multi-drum washing machine
according to claim 3, wherein the detection unit is a second
detection circuit, and the second detection circuit is connected in
parallel with the control unit; wherein one end of the second
detection circuit is arranged between the heating unit and the
control unit, and another end of the second detection circuit is
arranged between the control unit and the second power supply and,
the second detection circuit and the corresponding control unit
form a closed loop.
9. The heating control system of the multi-drum washing machine
according to claim 8, wherein a connecting relation of the second
detection circuit is as follows: the second detection circuit
comprises a second resistor R1 and a diode D, the resistor R1 and
the diode D are connected and form a closed loop with the control
unit; the second detection circuit further comprises an optical
coupler OC, the optical coupler OC is reversely connected with the
diode D, a C pole of the optical coupler OC is connected with a
third resistor R3 and an external power supply V+, and an E pole of
the optical coupler OC is grounded.
10. The heating control system of the multi-drum washing machine
according to claim 3, wherein the control unit comprises a knife
switch and/or a relay switch.
11. The heating control system of the multi-drum washing machine
according to claim 2, wherein each heating device comprises at
least one heating unit and a control unit corresponding to the
heating unit, one end of the heating unit is connected with a first
power supply, another end of the heating unit is connected with one
end of the control unit, and another end of the control unit is
connected with a second power supply; wherein the control unit is
used for controlling the heating unit to be turned on/off.
12. The heating control system of the multi-drum washing machine
according to claim 5, wherein the heating unit is a heating
pipe.
13. The heating control system of the multi-drum washing machine
according to claim 4, wherein the heating unit comprises one or
more than one element selected from a group consisting of a heating
pipe, a heating wire, a heating rod and an electromagnetic
induction heating ring.
14. The heating control system of the multi-drum washing machine
according to claim 4, wherein the detection unit is a first
detection circuit, and an input end of the first detection circuit
is arranged between and connected with the heating unit and the
control unit.
15. The heating control system of the multi-drum washing machine
according to claim 5, wherein the detection unit is a first
detection circuit, and an input end of the first detection circuit
is arranged between and connected with the heating unit and the
control unit.
16. The heating control system of the multi-drum washing machine
according to claim 4, wherein the detection unit is a second
detection circuit, and the second detection circuit is connected in
parallel with the control unit; wherein one end of the second
detection circuit is arranged between the heating unit and the
control unit, and another end of the second detection circuit is
arranged between the control unit and the second power supply and,
the second detection circuit and the corresponding control unit
form a closed loop.
17. The heating control system of the multi-drum washing machine
according to claim 5, wherein the detection unit is a second
detection circuit, and the second detection circuit is connected in
parallel with the control unit; wherein one end of the second
detection circuit is arranged between the heating unit and the
control unit, and another end of the second detection circuit is
arranged between the control unit and the second power supply and,
the second detection circuit and the corresponding control unit
form a closed loop.
Description
TECHNICAL FIELD
[0001] The disclosure relates to a multi-drum washing machine, in
particular to a heating control system of a multi-drum washing
machine.
BACKGROUND
[0002] With the improvement of living quality, people become
increasingly aware of the importance of hygiene, especially in the
aspect of household laundry washing, more and more people wash
clothes separately now. For example, undergarments and outer
garments are washed separately, baby clothing and adult clothing
are washed separately, clothes with different colors are washed
separately, or small-load washing is required when only a few items
of clothing need to be washed. These can be done only in batches
using an existing washing machine, or multiple washing machines are
needed to meet the above requirements. This will not only waste a
lot of energy and water, but also occupies large space. A
multi-drum washing machine can meet the above needs and solve the
problem of large space occupation. However, since each drum is
usually equipped with one or two heating pipes, electric potential
safety hazards might be caused when improper control is
conducted.
[0003] Chinese patent application number of CN201010237876.X
discloses a combined washer/dryer system and a control method
thereof. The combined washer/dryer system comprises a washer and a
dryer. The control method comprises the following steps of:
electrically connecting the washer and the dryer, switching on the
power supply to start working, detecting the working current of the
system through a power management module, and controlling the
working current of a heating pipe of the washer or a heating pipe
of the dryer according to the working current of the system so as
to control the working current within a safe current range. In this
way, the use safety of the system is improved. The implementation
principle of the control method is simple and the program is easy
to control. However, since the power management module is added to
control the working current within a safe range, the cost of the
whole machine is increased; furthermore, if a detection circuit of
the power management module fails, there is a electric potential
safety hazard that both heating pipes work with large currents.
[0004] In view of this, the present disclosure is proposed.
SUMMARY
[0005] The technical problem to be solved by the disclosure is to
overcome the defects of the prior art, and provide a heating
control system of a multi-drum washing machine. A simple circuit
detection unit is arranged on a circuit of a heating device to
realize the detection of the heating device, obtain heating
information and then control the heating device, thereby improving
the operation safety of the multi-drum washing machine.
[0006] In order to achieve the purpose, the disclosure adopts the
following technical scheme: a heating control system of a
multi-drum washing machine is provided, the multi-drum washing
machine comprises at least two sets of heating devices, and the
heating control system further comprises at least two detection
units which are correspondingly connected with the heating devices,
wherein each detection unit is used for detecting heating
information of one of the heating devices and at least one other
heating device is controlled to be turned on/off according to the
heating information.
[0007] Further, a first detection unit, corresponding to a first
heating device, in the control system detects heating information
of the first heating device, and a second heating device is
controlled to be turned on/off according to the heating information
of the first heating device;
[0008] wherein the first heating device and the second heating
device are arranged in parallel.
[0009] Further, each heating device comprises at least one heating
unit and a control unit corresponding to the heating unit, one end
of the heating unit is connected with a first power supply, the
other end of the heating unit is connected with the control unit,
and the other end of the control unit is connected with a second
power supply;
[0010] wherein the control unit is used for controlling the heating
unit to be turned on/off.
[0011] Further, each detection unit is arranged in parallel with
the corresponding control unit and is used for detecting electric
potential information of at least one end of the control unit.
[0012] Further, each heating unit comprises one or any combination
of a heating pipe, a heating wire, a heating rod and an
electromagnetic induction heating ring;
[0013] preferably, the heating unit is a heating pipe.
[0014] Further, each detection unit is a first detection circuit,
and an input end of the first detection circuit is arranged between
and connected to the corresponding heating unit and the
corresponding control unit.
[0015] Further, a connecting relation of each first detection
circuit is as follows: one end of a first resistor R is connected
with the input end, the other end of the first resistor R is
connected with an output end and a capacitor C, and the other end
of the capacitor C is grounded.
[0016] Further, each detection unit is a second detection circuit,
and the second detection circuit is connected in parallel with the
corresponding control unit;
[0017] wherein one end of the second detection circuit is arranged
between the corresponding heating unit and the corresponding
control unit, and the other end of the second detection circuit is
arranged between the corresponding control unit and the second
power supply and forms a closed loop with the corresponding control
unit.
[0018] Further, a connecting relation of each second detection
circuit is as follows: the second detection circuit comprises a
second resistor R1 and a diode D, and the resistor R1 is connected
to the diode D and forms a closed loop with the corresponding
control unit; and the second detection circuit further comprises an
optical coupler OC, the optical coupler OC is reversely connected
with the diode D, a C pole of the optical coupler OC is connected
with a third resistor R3 and an external power supply V+, and an E
pole of the optical coupler OC is grounded.
[0019] Further, each control unit comprises a knife switch and/or a
relay switch.
[0020] After the technical scheme is adopted, compared with the
prior art, the disclosure has the following beneficial effects:
[0021] 1. The heating control system of the multi-drum washing
machine provided by the disclosure solves the problem that it is
difficult to detect heating devices in a multi-drum washing
machine, thus increasing the calculation burden of a processor. The
disclosure realizes real-time detection of the heating devices
through simple detection circuit hardware connection on a circuit
of each heating device, thus reducing the calculation burden of the
processor of the multi-drum washing machine; and according to the
disclosure, the circuits are detected by using connection
structures of circuit hardware, thereby saving cost, reducing the
data processing amount of the multi-drum washing machine and
prolonging the service life of the processor of the multi-drum
washing machine.
[0022] 2. The detection circuits adopted by the heating control
system of the multi-drum washing machine are simple in structure
and sensitive in response, and besides, the heating control system
of the multi-drum washing machine has better safety and is suitable
for production and popularization.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 is a structural diagram of a heating control system
of a multi-drum washing machine according to an embodiment of the
present disclosure;
[0024] FIG. 2 is a structural diagram of a detection unit according
to an embodiment of the present disclosure; and
[0025] FIG. 3 is a structural diagram of a detection unit according
to another embodiment of the present disclosure.
[0026] 1. heating unit; 2. control unit; 3. first detection
circuit; 4. second detection circuit.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] For better understanding of the above objects, features and
advantages of the present disclosure, the present disclosure will
be described in further detail below with reference to the
accompanying drawings and detailed description.
Embodiment 1
[0028] As shown in FIG. 1-FIG. 3, a heating control system of a
multi-drum washing machine is provided, the multi-drum washing
machine comprises at least two sets of heating devices, and the
heating control system further comprises at least two detection
units which are correspondingly connected with the heating devices,
wherein each detection unit is used for detecting heating
information of the corresponding heating device and controlling at
least one other heating device to be turned on/off according to the
heating information.
[0029] Specifically, the multi-drum washing machine described in
this embodiment can acquire the heating information of the heating
devices by respectively detecting the heating devices, and control
the operation of the heating devices according to the heating
information, so as to avoid potential safety hazards of the
multi-drum washing machine caused by excessive power consumption
when the plurality of heating devices run at the same time. In this
embodiment, when the heating devices work, the detection units are
triggered to generate a high level or a low level; and when the
heating devices do not work, the detection units are triggered to
generate a low level or a high level. The embodiment realizes
real-time detection of the heating devices through simple detection
circuit hardware connection on a circuit of each heating device,
thus reducing the calculation burden of the processor of the
multi-drum washing machine; and according to this embodiment, the
circuits are detected by using connection structures of circuit
hardware, thereby simplifying the judging and processing of the
processor so that the accuracy and sensitivity of the detection
circuits are improved, reducing the data processing amount of the
multi-drum washing machine and prolonging the service life of the
processor of the multi-drum washing machine.
[0030] Besides, no extra power management module needs to be added,
only the detection units consisting of the simple circuits need to
be added in the heating devices to perform detection control on the
plurality of sets of heating devices, thereby saving the cost of
the multi-drum washing machine, increasing safety and making the
heating control system be suitable for production and
popularization.
[0031] Further, a first detection unit, corresponding to a first
heating device, in the control system detects heating information
of the first heating device, and controls a second heating device
to be turned on/off according to the heating information of the
first heating device;
[0032] wherein the first heating device and the second heating
device are arranged in parallel.
[0033] Specifically, the heating devices in this embodiment are
correspondingly connected with the detection units. Before the
second heating device is turned on, the first heating device needs
to be detected to ensure that the first heating device is not in a
high-power working state, so that it is ensured that the high-power
heating devices in the multi-drum washing machine do not operate at
the same time and that the multi-drum washing machine runs
safely.
[0034] Further, each heating device comprises at least one heating
unit 1 and a control unit 2 corresponding to the heating unit 1,
one end of the heating unit 1 is connected with a first power
supply, the other end of the heating unit 1 is connected with the
control unit 2, and the other end of the control unit 2 is
connected with a second power supply;
[0035] wherein the control unit 2 is used for controlling the
heating unit 1 to be turned on/off.
[0036] When one heating device is provided with a plurality of
heating units 1, the heating units are arranged in parallel.
[0037] Specifically, in this embodiment, each heating unit 1 and
the corresponding control unit 2 are connected in series to form
one heating device, and a plurality of heating devices are
connected in parallel to form a heating system of the multi-drum
washing machine. For example, a first heating unit is connected in
series with a first control unit, and the first control unit has an
on state and an off state, and controls the heating unit 1 to
perform heating and not to perform heating by the two states.
[0038] Meanwhile, the first detection unit also corresponds to the
first control unit and the first heating unit, and the first
detection unit detects the electric potential information on a
circuit where the first heating unit and the first control unit are
located, thereby obtaining a heating state of the heating unit
1.
[0039] Further, each detection unit is arranged in parallel with
the corresponding control unit 2 and is used for detecting electric
potential information of at least one end of the control unit
2.
[0040] Further, each heating unit 1 comprises one or any
combination of a heating pipe, a heating wire, a heating rod and an
electromagnetic induction heating ring;
[0041] preferably, the heating unit 1 is a heating pipe.
[0042] Further, each detection unit is a first detection circuit 3,
and an input end of the first detection circuit 3 is arranged
between and connected with the corresponding heating unit 1 and the
corresponding control unit 2.
[0043] Further, a connecting relation of each first detection
circuit 3 is as follows: one end of a first resistor R is connected
with the input end, the other end of the first resistor R is
connected with an output end and a capacitor C, and the other end
of the capacitor C is grounded.
[0044] Specifically, in this embodiment, each detection circuit is
a non-isolated detection circuit, and the heating information of
the heating unit 1 can be detected simply by acquiring a signal of
a line between the heating unit 1 and the control unit 2. When the
control unit 2 is on or off, the input end of the detection unit
inputs an electrical signal, thereby triggering the capacitor C to
discharge or charge, and the output end outputs a high level or a
low level. The state of each control unit 2 is obtained, and then
the on/off state of other control units 2 is controlled.
[0045] For example, when the first power supply is higher than the
second power supply and the control unit 2 is on, the capacitor C
is triggered to discharge, and the output end outputs a low level.
When the control unit 2 is off, the capacitor C is triggered to
charge, and the output end outputs a high level.
[0046] In this embodiment, through the charging and discharging
process of the hardware capacitor C, the on/off state of the
control unit 2 is obtained, so that other heating units 1 are
controlled to be turned on/off according to the on/off state of the
control unit 2. According to the embodiment, the heating
information of the heating units 1 is detected through a simple
hardware connection structure, so that the control of the heating
system is realized, the calculation burden of the processor of the
multi-drum washing machine is reduced, and electric potential
safety hazards caused when the plurality of heating devices work at
the same time with large currents due to calculation failure caused
by heavy calculation burden of the processor are avoided.
[0047] Further, each control unit 2 comprises a knife switch and/or
a relay switch.
[0048] To sum up, the heating control system of the multi-drum
washing machine in this embodiment has the following
advantages:
[0049] 1. The heating control system of the multi-drum washing
machine provided in this embodiment solves the problem that it is
difficult to detect heating devices in a multi-drum washing
machine, thus increasing the calculation burden of a processor; the
embodiment realizes real-time detection of the heating devices
through simple detection circuit hardware connection on a circuit
of each heating device, thus reducing the calculation burden of the
processor of the multi-drum washing machine; and according to the
embodiment, the circuits are detected by using connection
structures of circuit hardware, thereby saving cost, reducing the
data processing amount of the multi-drum washing machine and
prolonging the service life of the processor of the multi-drum
washing machine.
[0050] 2. The detection circuits adopted by the heating control
system of the multi-drum washing machine are simple in structure
and sensitive in response, and besides, the heating control system
of the multi-drum washing machine has better safety and is suitable
for production and popularization.
Embodiment 2
[0051] As shown in FIG. 1 and FIG. 3, a heating control system of a
multi-drum washing machine is provided, the multi-drum washing
machine comprises at least two sets of heating devices, and the
heating control system further comprises at least two detection
units which are correspondingly connected with the heating devices,
wherein each detection unit is used for detecting heating
information of the corresponding heating device and controlling the
heating devices to be turned on/off according to the heating
information.
[0052] Further, one detection unit in the control system detects
heating information of a first heating device, and controls a
second heating device to be turned on/off according to the heating
information of the first heating device.
[0053] Further, each heating device comprises at least one heating
unit 1 and a control unit 2 corresponding to the heating unit 1,
one end of the heating unit 1 is connected with a first power
supply, the other end of the heating unit 1 is connected with the
control unit 2, and the other end of the control unit 2 is
connected with a second power supply;
[0054] wherein the control unit 2 is used for controlling the
heating unit 1 to be turned on/off.
[0055] Further, each detection unit is arranged in parallel with
the corresponding control unit 2 and is used for detecting electric
potential information of at least one end of the control unit
2.
[0056] Further, each heating unit 1 comprises one or any
combination of a heating pipe, a heating wire, a heating rod and an
electromagnetic induction heating ring;
[0057] preferably, the heating unit 1 is a heating pipe.
[0058] Each detection unit is a second detection circuit 4, and the
second detection circuit 4 is connected in parallel with the
corresponding control unit 2;
[0059] wherein one end of the second detection circuit 4 is
arranged between the corresponding heating unit 1 and the
corresponding control unit 2, and the other end of the second
detection circuit 4 is arranged between the corresponding control
unit 2 and the second power supply; and the second detection
circuit and the corresponding control unit 2 form a closed
loop.
[0060] Further, a connecting relation of each second detection
circuit 4 is as follows: the second detection circuit comprises a
second resistor R1 and a diode D, and the resistor R1 and the diode
D are connected and form a closed loop with the corresponding
control unit 2; and the second detection circuit 4 further
comprises an optical coupler OC, the optical coupler OC is
reversely connected with the diode D, a C pole of the optical
coupler OC is connected with a third resistor R3 and an external
power supply V+, and an E pole of the optical coupler OC is
grounded.
[0061] Specifically, in this embodiment, the isolated detection
circuits are mainly adopted, which can avoid the problem of
detection errors in detection information of the detection units
due to the interference of a circuit where the heating units 1 and
the control units 2 are located. In each second detection circuit 4
of this embodiment, the detection unit is connected in parallel
with the control unit 2 to detect the circuit information of two
ends of the control unit 2, and when the control unit 2 is on or
off, an output end outputs a high level or a low level. The state
of each control unit 2 is obtained, and then the on/off state of
other control units 2 is controlled.
[0062] Meanwhile, according to each second detection circuit 4 in
this embodiment, through reverse connection of the diode D and the
optical coupler OC, specifically, through reverse parallel
connection of the diode D and a light emitting diode in the optical
coupler OC, the safety of the second detection circuit 4 is
improved.
[0063] Moreover, when the first power supply is higher than the
second power supply and the control unit 2 is on, the light
emitting diode in the optical coupler OC is triggered to emit
light, a loop of the second resistor R1 and the light emitting
diode is formed, and a C pole and an E pole of a triode are turned
on, so that the output end outputs a high level;
[0064] and when the control unit 2 is off, the diode D is turned
on, forming a loop of the second resistor R1 and the diode D. The C
pole and the E pole of the triode of the optical coupler OC are not
turned on, and then the output end outputs a low level.
[0065] In this embodiment, the second detection circuits 4 can not
only detect the circuits of the heating devices, but also protect
the detection circuits and improve the operation safety of the
multi-drum washing machine.
[0066] Further, each control unit 2 comprises a knife switch and/or
a relay switch.
[0067] The above-mentioned embodiments can be further combined or
replaced, and the embodiments are merely preferred embodiments of
the present disclosure, and do not limit the concept and scope of
the present disclosure. Without departing from the design idea of
the present disclosure, various changes and improvements made to
the technical scheme of the present disclosure by those skilled in
the art belong to the protection scope of the present
disclosure.
* * * * *