CN114135708A - Control method of ERV automatic temperature control valve and ERV automatic temperature control valve - Google Patents
Control method of ERV automatic temperature control valve and ERV automatic temperature control valve Download PDFInfo
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- CN114135708A CN114135708A CN202111288372.5A CN202111288372A CN114135708A CN 114135708 A CN114135708 A CN 114135708A CN 202111288372 A CN202111288372 A CN 202111288372A CN 114135708 A CN114135708 A CN 114135708A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004364 calculation method Methods 0.000 claims abstract description 44
- 238000004590 computer program Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000010438 heat treatment Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
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- 238000002474 experimental method Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/046—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor with electric means, e.g. electric switches, to control the motor or to control a clutch between the valve and the motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- General Engineering & Computer Science (AREA)
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- Automation & Control Theory (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a control method of an ERV automatic temperature control valve, which comprises the following steps: acquiring a target temperature, a current environment temperature and a current valve opening; judging the opening adjusting direction of the valve according to the target temperature and the current environment temperature; calculating the absolute value of the temperature difference between the target temperature and the current environment temperature, converting the absolute value of the temperature difference into a temperature difference percentage, and calculating the opening adjustment and calculation stroke by utilizing the temperature difference percentage; checking whether the opening adjustment calculation stroke exceeds the valve adjustment range, if so, calculating an opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke, otherwise, taking the opening adjustment calculation stroke as the opening adjustment actual stroke; and outputting a valve adjusting signal according to the opening adjusting direction and the actual opening adjusting stroke, and calculating and storing the adjusted opening of the valve. The invention can reduce the action amplitude and the action times of the motor, thereby reducing the abrasion speed of the valve body, reducing the power consumption and improving the temperature control precision.
Description
Technical Field
The invention relates to the field of water heating equipment. More particularly, the invention relates to a control method of an ERV automatic temperature control valve and the ERV automatic temperature control valve.
Background
An ERV automatic temperature control valve is used at the tail end of a heating system, an automatic temperature control valve powered by a battery is adopted, the ERV automatic temperature control valve is a combined integrated machine of an electronic temperature controller and an electronic actuator, the electronic temperature controller generally comprises a temperature sensor, a key, an LED display screen, an MCU and the like, the environmental temperature can be detected, a user can also be enabled to operate the key and the LED display screen, the target temperature can be set according to the requirement, the electronic actuator generally comprises a direct current motor (or a stepping motor), a valve body connector, an MCU and the like, the control intention of the electronic temperature controller can be executed, and the on-off control or the opening degree adjustment of the valve can be realized in real time.
At present, the automatic ERV temperature control valve applied to a water heating system generally adopts a mode of 'valve fully open' or 'valve fully closed' to realize valve temperature control, that is, an electronic temperature controller controls an electronic actuator to execute a fully open valve or a fully closed valve action to realize temperature regulation, such as: when the ambient temperature is higher than the target temperature by 1 ℃, the electronic temperature controller controls the electronic actuator to execute a full-closing action, and when the ambient temperature is lower than the target temperature by 1 ℃, the electronic temperature controller controls the electronic actuator to execute a full-opening action (as shown in fig. 1), so that the electronic temperature controller inevitably drives the valve body to be opened or closed fully along with frequent motor driving, the motor has large action amplitude and multiple times, the valve body is abraded quickly, the electric energy consumption is high (the electronic temperature controller is not suitable for a water heating system powered by a battery), and the temperature control precision is poor.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
It is still another object of the present invention to provide a method for controlling an ERV automatic temperature control valve, so as to reduce the action amplitude and the action times of a motor, further reduce the valve body wear speed, reduce the power consumption, and improve the temperature control accuracy.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a method for controlling an ERV automatic thermostatic valve, comprising:
acquiring a target temperature;
acquiring the current environment temperature and the current valve opening;
judging the opening adjusting direction of the valve according to the target temperature and the current environment temperature;
calculating the absolute value of the temperature difference between the target temperature and the current environment temperature, converting the absolute value of the temperature difference into a temperature difference percentage, and calculating the opening adjustment and calculation stroke by utilizing the temperature difference percentage;
checking whether the opening adjustment calculation stroke exceeds the valve adjustment range, if so, calculating an opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke, otherwise, taking the opening adjustment calculation stroke as the opening adjustment actual stroke;
and outputting a valve adjusting signal according to the opening adjusting direction and the actual opening adjusting stroke, and calculating and storing the adjusted opening of the valve.
Preferably, the method for calculating the opening degree adjustment calculation stroke by using the percentage of the temperature difference comprises the following steps: and calculating the product of the temperature difference percentage, the preset maximum valve opening and the preset overshoot coefficient, namely calculating the opening adjustment stroke.
Preferably, the method for calculating the percentage of temperature difference comprises: and calculating the ratio of the temperature difference to 10 to obtain the percentage of the temperature difference.
Preferably, the preset overshoot factor is 1.15.
Preferably, the current ambient temperature and the current valve opening are acquired every preset time, and the valve adjustment signal is output again according to the current ambient temperature and the current valve opening acquired each time.
Preferably, the method for determining the opening adjustment direction of the valve according to the target temperature and the current ambient temperature includes:
comparing the target temperature with the current ambient temperature;
if the target temperature is higher than the current environment temperature, calculating the temperature difference between the target temperature and the current environment temperature, comparing the temperature difference value with a preset temperature difference threshold value, and marking the opening degree adjusting direction as opening when the temperature difference value is higher than the preset temperature difference threshold value;
and if the target temperature is lower than the current environment temperature, calculating the temperature difference between the current environment temperature and the target temperature, comparing the temperature difference value with a preset temperature difference threshold value, and marking the opening adjusting direction to be smaller when the temperature difference value is higher than the preset temperature difference threshold value.
Preferably, the method for verifying whether the opening adjustment calculation stroke exceeds the valve adjustment range includes:
when the marked opening adjusting direction is opening, calculating the sum of the current valve opening and the opening adjusting calculating stroke, and comparing the sum of the current valve opening and the opening adjusting calculating stroke with the preset maximum valve opening;
and when the marked opening adjusting direction is off, calculating the difference between the current valve opening and the opening adjusting and calculating stroke, and comparing the difference between the current valve opening and the opening adjusting and calculating stroke with the preset minimum valve opening.
Preferably, when the opening adjustment calculation stroke exceeds the valve adjustment range, the method for calculating the opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke includes:
when the marked opening adjusting direction is large and the sum of the current valve opening and the opening adjusting calculation stroke is larger than the preset maximum valve opening, calculating the difference between the preset maximum valve opening and the current valve opening as an opening adjusting actual stroke;
and when the marked opening adjusting direction is off and the difference between the current valve opening and the opening adjusting calculation stroke is smaller than the preset minimum valve opening, taking the current valve opening as the opening to adjust the actual stroke.
The invention also provides an automatic ERV temperature control valve, which comprises: the control system comprises at least one processor and a memory which is connected with the at least one processor in a communication mode, wherein the memory stores instructions which can be executed by the at least one processor, and the instructions are executed by the at least one processor so as to enable the at least one processor to execute the control method.
The present invention also provides a storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the control method described above.
The invention at least comprises the following beneficial effects: the temperature difference between the target temperature and the ambient temperature is converted into the temperature difference percentage, the maximum opening degree and the overshoot coefficient of the valve are combined, the opening degree adjusting stroke of the valve can be calculated more accurately, the precision of temperature control is higher through more accurate opening degree adjustment of the valve, meanwhile, the action amplitude and the action frequency of the motor are also obviously reduced, the consumption of electric energy is further reduced, the abrasion degree of the valve is reduced, and the water heating system is more suitable for being powered by a battery.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a water temperature-time curve obtained by applying the control method of an ERV automatic temperature control valve in the prior art;
FIG. 2 is a graph of water temperature versus time obtained by applying the control method according to the embodiment of the present invention;
fig. 3 is a flowchart of a control method of an ERV automatic temperature control valve according to an embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
An ERV automatic temperature control valve is used at the tail end of a heating system, an automatic temperature control valve powered by a battery is adopted, the ERV automatic temperature control valve is a combined integrated machine of an electronic temperature controller and an electronic actuator, the electronic temperature controller generally comprises a temperature sensor, a key, an LED display screen, an MCU and the like, the environmental temperature can be detected, a user can also be enabled to operate the key and the LED display screen, the target temperature can be set according to the requirement, the electronic actuator generally comprises a direct current motor (or a stepping motor), a valve body connector, an MCU and the like, the control intention of the electronic temperature controller can be executed, and the on-off control or the opening degree adjustment of the valve can be realized in real time.
In the embodiment of the invention, the ERV automatic temperature control valve is applied to a water heating system, and is used for controlling the flow of hot water in a hot water pipe so as to control the temperature of water flow finally flowing out of a faucet.
In the embodiment of the present invention, the target temperature is the temperature of the water flowing out from the faucet set by the user, and the current environment temperature refers to the current actual temperature of the water flowing out from the faucet.
In the embodiment of the invention, the position of the valve core in the valve body when the valve is fully closed is taken as an initial position, the valve opening refers to the current position of the valve core in the valve body, the valve opening is represented by the length value of a rotating path of the valve core rotating from the initial position to the current position, when the valve is fully closed, the length value of the rotating path of the valve core is 0, so that the minimum opening of the valve is generally represented by 0 (of course, a user can independently select a rotating path length value as the minimum opening of the valve according to requirements), and when the valve is fully opened, the length value of the rotating path of the valve core is maximum, so that the maximum rotating path length value is generally used for representing the maximum opening of the valve (of course, the user can independently select a rotating path length value as the maximum opening of the valve according to requirements);
however, since the valve core is driven by the motor, the stroke of the motor is generally represented by the number of steps, in the embodiment of the invention, when the valve is opened from full close to full open, the length value of the rotation path of the valve core and the number of steps of the motor are recorded, and then the length value of the rotation path of the valve core and the number of steps of the motor are mapped with each other, so the current opening degree of the valve can be represented by the number of steps of the motor, when the valve is fully closed, the motor rotates 0 step, so 0 step is also used for representing the minimum opening degree of the valve, when the valve is fully opened, the number of steps of the motor is the maximum, and the maximum number of steps is also used for representing the maximum opening degree of the valve.
Specifically, in the embodiment of the present invention, when the valve opening is represented by a length of a rotation path of the valve element from the initial position to the current position, the minimum valve opening is 0mm, and the maximum valve opening is 3.2mm, and is represented by the number of motor steps, the minimum valve opening is 0 step, and the maximum valve opening is 1638 steps.
Next, with respect to the above-mentioned ERV automatic thermostatic valve, an embodiment of the present invention provides a method for controlling an ERV automatic thermostatic valve, as shown in fig. 3, including:
s1, acquiring a target temperature;
the target temperature can be set by the user before and stored in the memory, or can be reset currently and stored in the memory, and the target temperature is not a fixed value but is set by the user, so the target temperature is actually a variable and is assigned through the user setting.
Specifically, a user can observe and adjust the target temperature of the ERV automatic temperature control valve through a key and an LED display screen.
S2, acquiring the current environment temperature and the current valve opening;
the current environment temperature is obtained through a temperature sensor arranged in the faucet, the current environment temperature is obtained once every preset time, the water temperature is adjusted and calibrated at regular time, the time setting authority can be opened only to an engineer, the engineer sets the time to be quantitative, the user can also be opened, the preset time is set to be variable, the value is assigned through the user setting, the preset time is set to be 1min under general conditions, and the value can meet the requirement of quickly adjusting the water temperature and also can be considered in consideration of electric energy consumption.
The current valve opening is obtained from the memory, the valve opening after each valve adjustment is stored in the memory, the latest valve opening is obtained from the memory and is the current valve opening, and when the device is started, the ERV automatic temperature control valve can be initialized to be fully closed, the valve opening is returned to 0 and stored in the memory, so that the current valve opening can be obtained.
S3, judging the opening adjusting direction of the valve according to the target temperature and the current environment temperature;
specifically, the method of this step may include:
comparing the target temperature with the current ambient temperature;
if the target temperature is higher than the current environment temperature, calculating the temperature difference between the target temperature and the current environment temperature (target temperature-current environment temperature), comparing the temperature difference value with a preset temperature difference threshold value, marking the opening adjusting direction to be opened when the temperature difference value is higher than the preset temperature difference threshold value, and returning to the step S2 to wait for obtaining the current environment temperature and the current valve opening next time when the temperature difference value is lower than the preset temperature difference threshold value;
if the target temperature is lower than the current environment temperature, the temperature difference between the current environment temperature and the target temperature (the current environment temperature-the target temperature) is calculated, the temperature difference value is compared with a preset temperature difference threshold value, when the temperature difference value is larger than the preset temperature difference threshold value, the opening degree adjusting direction is marked to be turned off, and when the temperature difference value is smaller than the preset temperature difference threshold value, the step S2 is returned, and the current environment temperature and the current valve opening degree are obtained for the next time.
Here, the temperature difference threshold value setting authority can be opened only to engineers, set to the ration by engineers, also can be opened to the user, sets the temperature difference threshold value as the variable, assigns a value through user setting, and generally speaking, the temperature difference threshold value sets up to 0.5 degree, and this numerical value can satisfy the water temperature regulation precision demand, also considers the power consumption consideration.
Here, the opening degree adjustment direction is related to the current temperature, and therefore the opening degree adjustment direction is not fixed and is actually a variable, but the opening degree adjustment direction has only two cases of opening large and closing small, so the opening large is defined as 1, the closing small is defined as 0 (of course, the opening large and the closing small can also be defined as other mutually exclusive signs), and the opening degree adjustment direction is assigned as 1 or 0 by comparing the target temperature and the current ambient temperature.
S4, calculating the absolute value of the temperature difference between the target temperature and the current environment temperature, converting the absolute value of the temperature difference into a temperature difference percentage, and calculating the opening adjustment and calculation stroke by utilizing the temperature difference percentage;
specifically, the method for calculating the opening degree adjustment and calculating the stroke by using the temperature difference percentage in the step includes: calculating the product of the temperature difference percentage, the preset maximum valve opening and the preset overshoot coefficient, namely calculating the stroke for opening adjustment:
opening degree regulation calculation stroke is equal to temperature difference percentage multiplied by overshoot coefficient multiplied by maximum opening degree of the valve;
more specifically, the method for calculating the percentage of temperature difference in this step includes: and calculating the ratio of the temperature difference to 10 to obtain the percentage of the temperature difference. The preset overshoot factor is 1.15.
Therefore, the opening degree adjustment calculation stroke (| target temperature-current ambient temperature |/10) × the overshoot factor × the maximum opening degree of the valve;
the overshoot factor is adopted here, mainly considering the corresponding speed of moderate bar temperature adjustment, and taking 10 degrees as denominator, calculating the temperature difference percentage and setting the overshoot factor to 1.15, mainly because the parameter configuration can accurately achieve the temperature adjustment effect, and the values of the overshoot factor and the denominator for calculating the temperature difference percentage are preset by engineers in general.
S5, checking whether the opening adjustment calculation stroke exceeds the valve adjustment range, if so, calculating an opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke, otherwise, taking the opening adjustment calculation stroke as the opening adjustment actual stroke;
here, although the opening degree adjustment direction and the opening degree adjustment calculation stroke are already determined, there are maximum and minimum valve opening degrees, and if the valve opening degree after the opening degree adjustment calculation stroke is applied exceeds the maximum valve opening degree or exceeds the minimum valve opening degree based on the current valve opening degree, there is a possibility that the valve body is damaged or the motor idles, wasting electric energy, and therefore, it is necessary to verify the check opening degree adjustment calculation stroke.
Specifically, the method for verifying whether the opening adjustment calculation stroke exceeds the valve adjustment range comprises the following steps:
when the marked opening adjusting direction is opening, calculating the sum of the current valve opening and the opening adjusting calculating stroke, and comparing the sum of the current valve opening and the opening adjusting calculating stroke with the preset maximum valve opening;
and when the marked opening adjusting direction is off, calculating the difference between the current valve opening and the opening adjusting and calculating stroke, and comparing the difference between the current valve opening and the opening adjusting and calculating stroke with the preset minimum valve opening.
After verification, if the valve opening degree after the opening degree adjustment calculation stroke does not exceed the maximum valve opening degree or the minimum valve opening degree based on the current valve opening degree, the opening degree adjustment calculation stroke is used as the opening degree adjustment actual stroke, and therefore the valve adjustment process is accurate and effective.
However, when the valve opening degree after the opening degree adjustment calculation stroke exceeds the maximum valve opening degree or the minimum valve opening degree, the opening degree adjustment calculation stroke needs to be adjusted to obtain the actual opening degree adjustment stroke.
Specifically, when the opening adjustment calculation stroke exceeds the valve adjustment range, the method for calculating the opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke comprises the following steps:
when the marked opening adjusting direction is large and the sum of the current valve opening and the opening adjusting calculation stroke is larger than the preset maximum valve opening ((the current valve opening + the opening adjusting calculation stroke) > the maximum valve opening), calculating the difference between the preset maximum valve opening and the current valve opening as an opening adjusting actual stroke (the maximum valve opening-the current valve opening), namely, the valve opening after the actual stroke is adjusted by the opening reaches the maximum valve opening;
when the marked opening adjusting direction is off and the difference between the current valve opening and the opening adjusting calculation stroke is smaller than the preset valve minimum opening ((the current valve opening-opening adjusting calculation stroke) < the valve minimum opening), the current valve opening is used as the opening adjusting actual stroke, namely the valve opening after the actual stroke is adjusted by the opening is used for reaching the valve minimum opening.
Here, the setting authority of the maximum opening degree and the minimum opening degree of the valve may be set to a fixed amount by an engineer, or may be set to a fixed amount by a user, and the maximum opening degree and the minimum opening degree of the valve are set to variables, and are assigned by the user setting
And S6, outputting a valve adjusting signal according to the opening adjusting direction and the actual opening adjusting stroke, and calculating and storing the adjusted opening of the valve.
And after the steps of S1-S5, the opening degree adjusting direction and the actual opening degree adjusting stroke can be obtained, and the information forms a digital signal and is sent to the MCU of the motor, so that the automatic temperature control of the valve can be realized.
And the opening degree of the valve after adjustment can be calculated by the following method:
when the marked opening adjusting direction is opening, adjusting the opening after the valve adjustment to be the current valve opening plus the actual stroke of the opening adjustment;
and when the marked opening adjusting direction is closing, the opening after valve adjustment is equal to the current valve opening-opening adjusting actual stroke.
The ERV automatic temperature control valve and the control method are applied to adjust the water temperature, the result is shown in figure 2 by measuring and recording, and it is not difficult to see by comparing figure 1 and figure 2, the temperature difference between the target temperature and the environment temperature is converted into the temperature difference percentage, and then the maximum opening and the overshoot coefficient of the valve are combined, so that the opening adjusting stroke of the valve can be more accurately calculated, the temperature control precision is higher by more accurate opening adjustment of the valve, and meanwhile, the action amplitude and the action times of the motor are obviously reduced, thereby reducing the consumption of electric energy and the abrasion degree of the valve, and the ERV automatic temperature control valve is more suitable for a water heating system powered by a battery.
The invention also provides an automatic ERV temperature control valve, which comprises: the control system comprises at least one processor and a memory which is connected with the at least one processor in a communication mode, wherein the memory stores instructions which can be executed by the at least one processor, and the instructions are executed by the at least one processor so as to enable the at least one processor to execute the control method.
The present invention also provides a storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the control method described above.
The storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various readable storage media capable of storing program codes.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
- A control method of an ERV automatic temperature control valve is characterized by comprising the following steps:acquiring a target temperature;acquiring the current environment temperature and the current valve opening;judging the opening adjusting direction of the valve according to the target temperature and the current environment temperature;calculating the absolute value of the temperature difference between the target temperature and the current environment temperature, converting the absolute value of the temperature difference into a temperature difference percentage, and calculating the opening adjustment and calculation stroke by utilizing the temperature difference percentage;checking whether the opening adjustment calculation stroke exceeds the valve adjustment range, if so, calculating an opening adjustment actual stroke according to the current valve opening and the opening adjustment calculation stroke, otherwise, taking the opening adjustment calculation stroke as the opening adjustment actual stroke;and outputting a valve adjusting signal according to the opening adjusting direction and the actual opening adjusting stroke, and calculating and storing the adjusted opening of the valve.
- 2. The method of controlling an ERV automatic temperature control valve as claimed in claim 1, wherein the method of calculating the opening adjustment calculation stroke using the percentage of temperature difference comprises: and calculating the product of the temperature difference percentage, the preset maximum valve opening and the preset overshoot coefficient, namely calculating the opening adjustment stroke.
- 3. The method of controlling an ERV automatic temperature control valve as claimed in claim 2, wherein the method of calculating the percentage of temperature difference comprises: and calculating the ratio of the temperature difference to 10 to obtain the percentage of the temperature difference.
- 4. The method of controlling an ERV automatic thermostatic valve as claimed in claim 2, wherein the predetermined overshoot factor is 1.15.
- 5. The method of controlling an ERV automatic temperature control valve according to claim 1, wherein the current ambient temperature and the current valve opening are obtained every predetermined time period, and the valve adjustment signal is outputted again according to the current ambient temperature and the current valve opening obtained each time.
- 6. The method of controlling an ERV automatic temperature control valve according to claim 1, wherein the method of judging the opening adjustment direction of the valve according to the target temperature and the current ambient temperature comprises:comparing the target temperature with the current ambient temperature;if the target temperature is higher than the current environment temperature, calculating the temperature difference between the target temperature and the current environment temperature, comparing the temperature difference value with a preset temperature difference threshold value, and marking the opening degree adjusting direction as opening when the temperature difference value is higher than the preset temperature difference threshold value;and if the target temperature is lower than the current environment temperature, calculating the temperature difference between the current environment temperature and the target temperature, comparing the temperature difference value with a preset temperature difference threshold value, and marking the opening adjusting direction to be smaller when the temperature difference value is higher than the preset temperature difference threshold value.
- 7. The method of controlling an ERV automatic temperature control valve according to claim 6, wherein the method of verifying whether the opening adjustment calculation stroke exceeds the valve adjustment range comprises:when the marked opening adjusting direction is opening, calculating the sum of the current valve opening and the opening adjusting calculating stroke, and comparing the sum of the current valve opening and the opening adjusting calculating stroke with the preset maximum valve opening;and when the marked opening adjusting direction is off, calculating the difference between the current valve opening and the opening adjusting and calculating stroke, and comparing the difference between the current valve opening and the opening adjusting and calculating stroke with the preset minimum valve opening.
- 8. The method for controlling an ERV automatic temperature control valve according to claim 7, wherein when the opening adjustment calculation stroke exceeds the valve adjustment range, the method for calculating the opening adjustment actual stroke according to the current valve opening and opening adjustment calculation stroke comprises:when the marked opening adjusting direction is large and the sum of the current valve opening and the opening adjusting calculation stroke is larger than the preset maximum valve opening, calculating the difference between the preset maximum valve opening and the current valve opening as an opening adjusting actual stroke;and when the marked opening adjusting direction is off and the difference between the current valve opening and the opening adjusting calculation stroke is smaller than the preset minimum valve opening, taking the current valve opening as the opening to adjust the actual stroke.
- An automatic ERV temperature control valve, comprising: at least one processor, and a memory communicatively coupled to the at least one processor, wherein the memory stores instructions executable by the at least one processor, the instructions being executable by the at least one processor to cause the at least one processor to perform the control method of any of claims 1-8.
- 10. Storage medium on which a computer program is stored, characterized in that the program, when executed by a processor, implements the control method of any one of claims 1 to 8.
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| CN202111288372.5A CN114135708A (en) | 2021-11-02 | 2021-11-02 | Control method of ERV automatic temperature control valve and ERV automatic temperature control valve |
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| CN202111288372.5A CN114135708A (en) | 2021-11-02 | 2021-11-02 | Control method of ERV automatic temperature control valve and ERV automatic temperature control valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114719072A (en) * | 2022-04-02 | 2022-07-08 | 浙江银轮机械股份有限公司 | Electronic valve control method and device, water circulation system and storage medium |
| CN115031287A (en) * | 2022-06-01 | 2022-09-09 | 国能宁夏供热有限公司 | Method and device for predicting double-valve switching of heating power station, control equipment and storage medium |
| CN115059983A (en) * | 2022-08-15 | 2022-09-16 | 新誉集团有限公司 | Air supply control method, system, equipment and computer readable storage medium |
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| CN114719072A (en) * | 2022-04-02 | 2022-07-08 | 浙江银轮机械股份有限公司 | Electronic valve control method and device, water circulation system and storage medium |
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| CN115059983A (en) * | 2022-08-15 | 2022-09-16 | 新誉集团有限公司 | Air supply control method, system, equipment and computer readable storage medium |
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