CN203880790U - Constant air quantity and constant rotation speed switching control device for range hood - Google Patents
Constant air quantity and constant rotation speed switching control device for range hood Download PDFInfo
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- CN203880790U CN203880790U CN201420204410.3U CN201420204410U CN203880790U CN 203880790 U CN203880790 U CN 203880790U CN 201420204410 U CN201420204410 U CN 201420204410U CN 203880790 U CN203880790 U CN 203880790U
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- 238000001514 detection method Methods 0.000 claims abstract description 12
- 239000000779 smoke Substances 0.000 claims description 22
- 239000000523 sample Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 206010030312 On and off phenomenon Diseases 0.000 abstract description 4
- 238000010411 cooking Methods 0.000 description 2
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- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model is applicable to the field of household appliances, and particularly relates to a constant air quantity and constant rotation speed switching control device for a range hood. In the utility model, the control device comprises an air quantity detection unit, a rotation speed detection unit, a switching control unit and a power unit. In the mutual switching process of constant air quantity and constant rotation speed control states, current control signals before and after switching of the two control states are kept unchanged; then corresponding parameters of a control state to be switched are calculated according to parameters of a current control state; and control signals of the control state to be switched are generated according to the parameters of the control state to be switched, thereby ensuring that the inner-loop control signals and the outer-loop control signals are kept unchanged. Thus, the constant air quantity and constant rotation speed switching control device ensures soft switching between the two control states, ensures that the operation of a motor can not obviously change during switching, and avoids the phenomenon of motor fluctuation.
Description
Technical field
The utility model belongs to household appliance technical field, relates in particular to a kind of smoke exhaust ventilator permanent wind amount and permanent speed switching controller.
Background technology
Smoke exhaust ventilator claims again range hood, is a kind of kitchen appliance that purifies kitchen environment, and it can be taken the harmful oil smoke producing in the refuse of cooking stove burning and cooking process rapidly away, outside discharge chamber, reduce and pollute, purify air, and have gas defence, explosion-proof safety guarantee effect.
Now a lot of smoke exhaust ventilators can general constant rotational speed control program and constant wind quantity control program; above-mentioned two kinds of control programs; generally can adopt two closed-loop controls; in, ring is current closed-loop control; outer shroud is speed closed loop control or air quantity closed-loop control; and on the smoke exhaust ventilator platform that can simultaneously apply at two schemes; according to user's demand; above-mentioned two kinds of control programs need mutually to switch; and may there is obvious fluctuation in motor in handoff procedure; even shut down, cause that smoke exhaust ventilator delivery outlet air quantity changes obviously.
Utility model content
The object of the utility model embodiment is to provide a kind of smoke exhaust ventilator permanent wind amount and permanent speed switching controller, is intended to solve existing smoke exhaust ventilator and exists in the mutual handoff procedure of permanent wind amount and two kinds of state of a controls of permanent rotating speed the problem of motor fluctuation.
The utility model embodiment is achieved in that a kind of smoke exhaust ventilator permanent wind amount and permanent speed switching controller, comprises motor and change-over switch, and described control device also comprises:
Detect the air volume test unit of motor air volume;
Detect the rotation speed detection unit of motor speed;
Be connected with described air volume test unit and rotation speed detection unit respectively, keep two kinds of current controling signals before and after state of a controls switching constant, and according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate and want switching controls state control signal according to described wish switching controls state parameter, and according to current controling signal and wish switching controls state control signal, generate the switch control unit of Electric Machine Control electric current; And
Be connected with described switch control unit and motor respectively, according to the Electric Machine Control electric current of described generation, control the power cell of motor speed.
In the utility model embodiment, this control device comprises air volume test unit, rotation speed detection unit, switch control unit and power cell, in the mutual handoff procedure of permanent wind amount and two kinds of state of a controls of permanent rotating speed, first keep two kinds of current controling signals before and after state of a controls switching constant, again according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate wish switching controls state control signal according to wanting switching controls state parameter, in keeping like this, ring control signal and outer shroud control signal are constant, thereby ensure soft handover between two kinds of state of a controls, while making to switch, the work of motor does not have significant change, avoid occurring the phenomenon of motor fluctuation.
Brief description of the drawings
Fig. 1 is the smoke exhaust ventilator permanent wind amount that provides of the utility model embodiment and the modular structure figure of permanent speed switching controller;
Fig. 2 is the smoke exhaust ventilator permanent wind amount that provides of the utility model embodiment and the circuit structure diagram of permanent speed switching controller.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows smoke exhaust ventilator permanent wind amount that the utility model embodiment provides and the modular structure of permanent speed switching controller, for convenience of explanation, only shows the part relevant to the utility model embodiment.
A kind of smoke exhaust ventilator permanent wind amount and permanent speed switching controller, comprise motor 1 and change-over switch 2, and control device also comprises:
Detect the air volume test unit 3 of motor 1 air quantity;
Detect the rotation speed detection unit 4 of motor 1 rotating speed;
Be connected with air volume test unit 3 and rotation speed detection unit 4 respectively, keep two kinds of current controling signals before and after state of a controls switching constant, and according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate wish switching controls state control signal according to wanting switching controls state parameter, and according to current controling signal and wish switching controls state control signal, generate the switch control unit 5 of Electric Machine Control electric current; And
Be connected with switch control unit 5 and motor 1 respectively, according to the Electric Machine Control electric current generating, control the power cell 6 of motor 1 rotating speed.
As the utility model one embodiment, rotation speed detection unit 4 adopts position sensor.
As the utility model one embodiment, air volume test unit 3 adopts air flow sensor.
As the utility model one embodiment, power cell 6 adopts motor-drive circuit.
Fig. 2 shows smoke exhaust ventilator permanent wind amount that the utility model embodiment provides and the circuit structure of permanent speed switching controller, for convenience of explanation, only shows the part relevant to the utility model embodiment.
As the utility model one embodiment, switch control unit 5 adopts microprocessor U1, the control input end ctrl of microprocessor U1 connects change-over switch 2, the air volume test end IN1 of the microprocessor U1 quantity sensor of giving a dinner for a visitor from afar, the rotating speed test side IN2 of microprocessor U1 connects speed probe, and the control output end OUT of microprocessor U1 connects motor-drive circuit.
As an example of above-mentioned smoke exhaust ventilator permanent wind amount and permanent speed switching controller example, its course of work is described below, a kind of smoke exhaust ventilator permanent wind amount and permanent rotating speed method for handover control comprise the steps:
In step S1, keep two kinds of current controling signals before and after state of a controls switching constant;
In step S2, according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate wish switching controls state control signal according to wanting switching controls state parameter.
As the utility model one embodiment, state of a control parameter comprises rotating speed and air quantity.
Above-mentioned control method also comprises the steps:
In step S3, according to current controling signal and wish switching controls state control signal, generate Electric Machine Control electric current, control motor speed.
In above-mentioned steps, step S1 and S2 are completed by switch control unit 5, and step S3 is completed jointly by switch control unit 5 and power cell 6.
As the utility model one embodiment, step S1 specifically comprises:
In step S201, switch in constant wind quantity state of a control process in constant rotational speed state of a control, keep the current controling signal of constant wind quantity state of a control consistent with the current controling signal of constant rotational speed state of a control;
As the utility model one embodiment, step S2 specifically comprises:
In step S202, switch in constant wind quantity state of a control process in constant rotational speed state of a control, calculate the airflow value Q that current rotating speed is corresponding;
In step S203, generate air quantity control signal according to airflow value Q.
Above-mentioned control method also comprises the steps:
In step S204, according to current controling signal and air quantity control signal, generate Electric Machine Control electric current, control motor speed.
Switch in constant wind quantity state of a control process in constant rotational speed state of a control, first keep two kinds of current controling signals before and after state of a controls switching constant, calculate the airflow value Q that current rotating speed is corresponding, generate air quantity control signal according to airflow value Q, in keeping like this, ring control signal and outer shroud control signal are constant, thereby ensure soft handover between two kinds of state of a controls, while making to switch, the work of motor does not have significant change.
As the utility model one embodiment, step S1 specifically comprises:
In step S301, switch in constant rotational speed state of a control process in constant wind quantity state of a control, keep the current controling signal of constant rotational speed state of a control consistent with the current controling signal of constant wind quantity state of a control;
As the utility model one embodiment, step S2 specifically comprises:
In step S302, switch in constant rotational speed state of a control process in constant wind quantity state of a control, calculate the tachometer value speed that current air quantity is corresponding;
In step S303, generate speed controling signal according to tachometer value speed.
Above-mentioned control method also comprises the steps:
In step S304, according to current controling signal and speed controling signal, generate Electric Machine Control electric current, control motor speed.
Switch in constant rotational speed state of a control process in constant wind quantity state of a control, first keep two kinds of current controling signals before and after state of a controls switching constant, calculate the tachometer value speed that current air quantity is corresponding, generate speed controling signal according to tachometer value speed, in keeping like this, ring control signal and outer shroud control signal are constant, thereby ensure soft handover between two kinds of state of a controls, while making to switch, the work of motor does not have significant change.
In the utility model embodiment, this control device comprises air volume test unit, rotation speed detection unit, switch control unit and power cell, in the mutual handoff procedure of permanent wind amount and two kinds of state of a controls of permanent rotating speed, first keep two kinds of current controling signals before and after state of a controls switching constant, again according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate wish switching controls state control signal according to wanting switching controls state parameter, in keeping like this, ring control signal and outer shroud control signal are constant, thereby ensure soft handover between two kinds of state of a controls, while making to switch, the work of motor does not have significant change, avoid occurring the phenomenon of motor fluctuation.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. smoke exhaust ventilator permanent wind amount and a permanent speed switching controller, comprise motor and change-over switch, it is characterized in that, described control device also comprises:
Detect the air volume test unit of motor air volume;
Detect the rotation speed detection unit of motor speed;
Be connected with described air volume test unit and rotation speed detection unit respectively, keep two kinds of current controling signals before and after state of a controls switching constant, and according to current state of a control parameter, calculate corresponding wish switching controls state parameter, generate and want switching controls state control signal according to described wish switching controls state parameter, and according to current controling signal and wish switching controls state control signal, generate the switch control unit of Electric Machine Control electric current; And
Be connected with described switch control unit and motor respectively, according to the Electric Machine Control electric current of described generation, control the power cell of motor speed.
2. smoke exhaust ventilator permanent wind amount as claimed in claim 1 and permanent speed switching controller, is characterized in that, described rotation speed detection unit adopts position sensor.
3. smoke exhaust ventilator permanent wind amount as claimed in claim 2 and permanent speed switching controller, is characterized in that, described air volume test unit adopts air flow sensor.
4. smoke exhaust ventilator permanent wind amount as claimed in claim 3 and permanent speed switching controller, is characterized in that, described power cell adopts motor-drive circuit.
5. smoke exhaust ventilator permanent wind amount as claimed in claim 4 and permanent speed switching controller, it is characterized in that, described switch control unit adopts microprocessor U1, the control input end ctrl of described microprocessor U1 connects described change-over switch, the air volume test end IN1 of described microprocessor U1 connects described air flow sensor, the rotating speed test side IN2 of described microprocessor U1 connects speed probe, and the control output end OUT of described microprocessor U1 connects described motor-drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204410.3U CN203880790U (en) | 2014-04-24 | 2014-04-24 | Constant air quantity and constant rotation speed switching control device for range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204410.3U CN203880790U (en) | 2014-04-24 | 2014-04-24 | Constant air quantity and constant rotation speed switching control device for range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880790U true CN203880790U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204410.3U Expired - Lifetime CN203880790U (en) | 2014-04-24 | 2014-04-24 | Constant air quantity and constant rotation speed switching control device for range hood |
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| CN (1) | CN203880790U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674358A (en) * | 2014-11-19 | 2016-06-15 | 博西华电器（江苏）有限公司 | Control device and method for range hood and range hood |
| CN106287873A (en) * | 2015-05-18 | 2017-01-04 | 九阳股份有限公司 | A kind of intelligent range hood control method and intelligent range hood |
-
2014
- 2014-04-24 CN CN201420204410.3U patent/CN203880790U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674358A (en) * | 2014-11-19 | 2016-06-15 | 博西华电器（江苏）有限公司 | Control device and method for range hood and range hood |
| CN106287873A (en) * | 2015-05-18 | 2017-01-04 | 九阳股份有限公司 | A kind of intelligent range hood control method and intelligent range hood |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20141015 |
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| CX01 | Expiry of patent term |