CN110513931B - Method and device for determining target value of return water temperature of air source heat pump - Google Patents
Method and device for determining target value of return water temperature of air source heat pump Download PDFInfo
- Publication number
- CN110513931B CN110513931B CN201910888187.6A CN201910888187A CN110513931B CN 110513931 B CN110513931 B CN 110513931B CN 201910888187 A CN201910888187 A CN 201910888187A CN 110513931 B CN110513931 B CN 110513931B
- Authority
- CN
- China
- Prior art keywords
- temperature
- temperature value
- outdoor temperature
- outdoor
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
Abstract
The invention provides a method and a device for determining a target value of return water temperature of an air source heat pump, wherein the method comprises the following steps: presetting a corresponding relation between outdoor temperature and a maximum temperature value and a minimum temperature value; receiving a set temperature; determining a current outdoor temperature; correcting the set temperature according to the current outdoor temperature to generate a first intermediate temperature; determining a target maximum temperature value and a target minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation; judging whether the first intermediate temperature is greater than or equal to a target minimum temperature value and less than or equal to a target maximum temperature value, if so, determining that the second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the target maximum temperature value and the target minimum temperature value to generate a second intermediate temperature; and correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump. The invention provides a power-saving device.
Description
Technical Field
The invention relates to the technical field of control, in particular to a method and a device for determining a target value of return water temperature of an air source heat pump.
Background
An air source heat pump is an energy-saving device which utilizes high-level energy to enable heat to flow from low-level heat source air to a high-level heat source. When the air source heat pump receives a set temperature input from the outside, the air source heat pump controls the operation of a compressor in the air source heat pump according to the set temperature, so that the air source heat pump can output the set temperature. However, when the outdoor temperature is low, the compressor needs to operate at a very high frequency to reach a high set temperature, which consumes much energy.
Disclosure of Invention
The embodiment of the invention provides a method and a device for determining a target value of return water temperature of an air source heat pump, which can save energy.
In one aspect, an embodiment of the present invention provides a method for determining a target value of a return water temperature of an air source heat pump, including:
presetting a corresponding relation between outdoor temperature and a maximum temperature value and a minimum temperature value;
receiving an input set temperature;
determining a current outdoor temperature;
according to the current outdoor temperature, correcting the set temperature, and generating a first intermediate temperature after correction;
determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation;
judging whether the first intermediate temperature is greater than or equal to a minimum temperature value corresponding to the current outdoor temperature and less than or equal to a maximum temperature value corresponding to the current outdoor temperature, if so, determining that a second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature;
and correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump after correction.
Alternatively,
the step of correcting the set temperature according to the current outdoor temperature to generate a first intermediate temperature after correction includes:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first predetermined temperature, t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
Alternatively,
the corresponding relation comprises:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
Alternatively,
the correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after the correction, includes:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
Alternatively,
the step of correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump after correction includes:
and subtracting the first correction parameter from the second intermediate temperature to obtain the target value.
In another aspect, an embodiment of the present invention provides an apparatus for determining a target value of a return water temperature of an air source heat pump, including:
the storage unit is used for storing the corresponding relation between the outdoor temperature and the maximum temperature value and the minimum temperature value;
the receiving unit is used for receiving the input set temperature;
a determination unit for determining a current outdoor temperature;
the first correction unit is used for correcting the set temperature according to the current outdoor temperature and generating a first intermediate temperature after correction; determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation; judging whether the first intermediate temperature is greater than or equal to a minimum temperature value corresponding to the current outdoor temperature and less than or equal to a maximum temperature value corresponding to the current outdoor temperature, if so, determining that a second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature;
and the second correction unit is used for correcting the second intermediate temperature according to a preset first correction parameter and generating a target value of the return water temperature of the air source heat pump after correction.
Alternatively,
the first correcting unit, when executing the correction of the set temperature according to the current outdoor temperature and generating a first intermediate temperature after the correction, is specifically configured to:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first predetermined temperature, t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
Alternatively,
the corresponding relation comprises:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
Alternatively,
the first correcting unit, when executing the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, corrects the first intermediate temperature, and generates the second intermediate temperature after correction, is specifically configured to:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
Alternatively,
the second correction unit is configured to subtract the first correction parameter from the second intermediate temperature to obtain the target value.
In the embodiment of the invention, when the set temperature is received, the set temperature is corrected according to the current outdoor temperature to obtain the first intermediate temperature, then the first intermediate temperature is corrected based on the corresponding relation between the outdoor temperature and the maximum temperature value as well as the minimum temperature value, so that the generated second intermediate temperature is limited in the range from the minimum temperature value corresponding to the current outdoor temperature to the maximum temperature value corresponding to the current outdoor temperature, finally, the second intermediate temperature is corrected based on the first correction parameter to obtain the target value of the backwater temperature, and after the correction, the final target value can be limited in a certain range, so that the difference between the target value and the current outdoor temperature is avoided to be large, and when the target value is used for controlling the compressor to run, the compressor does not need to run at a high frequency, so that energy can be saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a flow chart of a method for determining a target value of a return water temperature of an air source heat pump according to an embodiment of the invention;
FIG. 2 is a flow chart of another method for determining a target value of a return water temperature of an air source heat pump according to an embodiment of the invention;
fig. 3 is a schematic diagram of an apparatus for determining a target value of a return water temperature of an air source heat pump according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a method for determining a target value of a return water temperature of an air source heat pump, which may include the following steps:
step 101: presetting a corresponding relation between outdoor temperature and a maximum temperature value and a minimum temperature value;
step 102: receiving an input set temperature;
step 103: determining a current outdoor temperature;
step 104: according to the current outdoor temperature, correcting the set temperature, and generating a first intermediate temperature after correction;
step 105: determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation;
step 106: judging whether the first intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature, if so, executing step 107, otherwise, executing step 108;
step 107: determining that the second intermediate temperature is equal to the first intermediate temperature, executing step 109;
step 108: correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating a second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature, and executing step 109;
step 109: and correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump after correction.
In the embodiment of the invention, when the set temperature is received, the set temperature is corrected according to the current outdoor temperature to obtain the first intermediate temperature, then the first intermediate temperature is corrected based on the corresponding relation between the outdoor temperature and the maximum temperature value as well as the minimum temperature value, so that the generated second intermediate temperature is limited in the range from the minimum temperature value corresponding to the current outdoor temperature to the maximum temperature value corresponding to the current outdoor temperature, finally, the second intermediate temperature is corrected based on the first correction parameter to obtain the target value of the backwater temperature, and after the correction, the final target value can be limited in a certain range, so that the difference between the target value and the current outdoor temperature is avoided to be large, and when the target value is used for controlling the compressor to run, the compressor does not need to run at a high frequency, so that energy can be saved.
In an embodiment of the present invention, the correcting the set temperature according to the current outdoor temperature to generate a first intermediate temperature includes:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first predetermined temperature, t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
In the embodiment of the present invention, t1May be at-12 ℃ and t2May be 12 deg.c. b2Can be in the range of [0, 10]]In particular, b2May be 3, 4, 5, 6, 7, 8, etc., b2The larger the correction to the set temperature. b2Can be set according to requirements, a setting b2The method comprises the following steps: the higher the outdoor temperature, b2The larger.
In an embodiment of the present invention, the correspondence relationship includes:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
In the embodiment of the invention, the first outdoor temperature value is smaller than the second outdoor temperature value, the second outdoor temperature value is smaller than the third outdoor temperature value, and the third outdoor temperature value is smaller than the fourth outdoor temperature value. Preferably, the first outdoor temperature value may be-25 ℃, the second outdoor temperature value may be-10 ℃, the third outdoor temperature value may be 30 ℃, and the fourth outdoor temperature value may be 43 ℃. The first temperature value may be 55 deg.c, the second temperature value may be 60 deg.c, and the third temperature value may be 25 deg.c.
Generally, when the outdoor temperature is more than 43 ℃, the air source heat pump is not needed for heating, if the outdoor temperature is more than 43 ℃, the fourth outdoor temperature can be set to 65 ℃, and when the outdoor temperature is 65 ℃, based on Tm＝90-toThe maximum temperature value and the minimum temperature value corresponding to 65 ℃ can be 25 ℃, and when the outdoor temperature is higher than 65 ℃, the maximum temperature value corresponding to the outdoor temperature is 25 ℃.
In an embodiment of the present invention, the correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after the correction includes:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
In an embodiment of the present invention, the correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of a return water temperature of the air source heat pump after the correction includes:
and subtracting the first correction parameter from the second intermediate temperature to obtain the target value.
In the embodiment of the present invention, the first correction parameter may be set as needed, and specifically, the first correction parameter is larger as the outdoor temperature is higher. The first correction parameter may have a value in the range of [0, 10 ].
As shown in fig. 2, an embodiment of the present invention provides a method for determining a target value of a return water temperature of an air source heat pump, which may include the following steps:
step 201: and presetting a corresponding relation between the outdoor temperature and the maximum temperature value and the minimum temperature value.
Specifically, the correspondence relationship includes:
when the outdoor temperature is lower than minus 25 ℃, the maximum temperature value corresponding to the outdoor temperature is 55 ℃;
when the outdoor temperature is more than or equal to-25 ℃ and less than or equal to-10 ℃, the maximum temperature value corresponding to the outdoor temperature meets the following requirements:
when the outdoor temperature is more than-10 ℃ and less than 30 ℃, the maximum temperature value corresponding to the outdoor temperature is 60 ℃;
when the outdoor temperature is more than or equal to 30 ℃ and less than or equal to 43 ℃, the maximum temperature value corresponding to the outdoor temperature meets the following requirements: t ism＝90-to；
The minimum temperature value corresponding to each outdoor temperature is 25 ℃.
Step 202: and receiving the input set temperature.
Specifically, the user can input the set temperature through the line controller, and since the heating capacity of the air source heat pump is limited, an allowable range of the set temperature is generally set according to the heating capacity of the air source heat pump, and the user can only input the temperature within the allowable range, for example: the allowable range is [40 ℃, 60 ℃ ].
In addition, the first correction parameter and the second correction parameter can be set through the wire controller.
Step 203: the current outdoor temperature is determined.
In particular, the outdoor temperature may be monitored in real time by a temperature sensor.
Step 204: determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is a third intermediate temperature, ToIs the current outdoor temperature.
Step 205: determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is a first intermediate temperature, TsTo set the temperature, b2Is a second correction parameter, wherein b2Greater than 0.
Step 206: and determining the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation.
For example, the current outdoor temperature is 25 ℃, then the maximum temperature value corresponding to the current outdoor temperature is 60 ℃ and the minimum temperature value corresponding to the current outdoor temperature is 25 ℃. The current outdoor temperature is 40 ℃, then the maximum temperature value corresponding to the current outdoor temperature is 50 ℃, and the minimum temperature value corresponding to the current outdoor temperature is 25 ℃.
Step 207: and judging whether the first intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature, if so, executing the step 208, otherwise, executing the step 209.
Step 208: it is determined that the second intermediate temperature is equal to the first intermediate temperature, step 210 is performed.
For example, the current outdoor temperature is 25 ℃, then the maximum temperature value corresponding to the current outdoor temperature is 60 ℃ and the minimum temperature value corresponding to the current outdoor temperature is 25 ℃. The first intermediate temperature is 50 deg.c and the first intermediate temperature is in the range of [25 deg.c, 60 deg.c ], then the second intermediate temperature is equal to the first intermediate temperature, which is also 50 deg.c.
Step 209: when the first intermediate temperature is greater than the maximum temperature value corresponding to the current outdoor temperature, it is determined that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature, and when the first intermediate temperature is less than the minimum temperature value corresponding to the current outdoor temperature, it is determined that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature, and step 210 is executed.
For example, the current outdoor temperature is 40 ℃, then the current outdoor temperature corresponds to a maximum temperature value of 50 ℃ and the current outdoor temperature corresponds to a minimum temperature value of 25 ℃. The first intermediate temperature is 55 deg.c and the first intermediate temperature is greater than 50 deg.c, then the second intermediate temperature is equal to the maximum temperature value corresponding to the current outdoor temperature and the second intermediate temperature is equal to 50 deg.c.
Step 210: and subtracting the first correction parameter from the second intermediate temperature to obtain a target value of the return water temperature of the air source heat pump.
For example, if the first correction parameter is 6 and the second intermediate temperature is 50 ℃, the target value of the return water temperature of the air source heat pump is 44 ℃.
And after the target value of the return water temperature of the air source heat pump is determined, controlling the running frequency of the compressor according to the target value.
As shown in fig. 3, the present embodiment provides an apparatus for determining a target value of a return water temperature of an air source heat pump, including:
a storage unit 301, configured to store a corresponding relationship between the outdoor temperature and the maximum temperature value and the minimum temperature value;
a receiving unit 302 for receiving an input set temperature;
a determination unit 303 for determining the current outdoor temperature;
a first correcting unit 304, configured to correct the set temperature according to the current outdoor temperature, and generate a first intermediate temperature after the correction; determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation; judging whether the first intermediate temperature is greater than or equal to a minimum temperature value corresponding to the current outdoor temperature and less than or equal to a maximum temperature value corresponding to the current outdoor temperature, if so, determining that a second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature;
and a second correcting unit 305, configured to correct the second intermediate temperature according to a preset first correction parameter, and generate a target value of a return water temperature of the air source heat pump after the correction.
In an embodiment of the present invention, when the first correcting unit corrects the set temperature according to the current outdoor temperature, and generates a first intermediate temperature after correction, the first correcting unit is specifically configured to:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first preset temperature，t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
In an embodiment of the present invention, the correspondence relationship includes:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
In an embodiment of the present invention, when the first correcting unit corrects the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generates the second intermediate temperature after correction, the first correcting unit is specifically configured to:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
In an embodiment of the present invention, the second correcting unit is configured to subtract the first correcting parameter from the second intermediate temperature to obtain the target value.
The method and the device for determining the target value of the return water temperature of the air source heat pump provided by the embodiment of the invention can be realized by the central controller of the air source heat pump.
The method and the device for determining the target value of the return water temperature of the air source heat pump are suitable for the coal-to-electricity air source heat pump.
Because the information interaction, execution process, and other contents between the units in the device are based on the same concept as the method embodiment of the present invention, specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
The embodiments of the invention have at least the following beneficial effects:
in the embodiment of the invention, when the set temperature is received, the set temperature is corrected according to the current outdoor temperature to obtain the first intermediate temperature, then the first intermediate temperature is corrected based on the corresponding relation between the outdoor temperature and the maximum temperature value as well as the minimum temperature value, so that the generated second intermediate temperature is limited in the range from the minimum temperature value corresponding to the current outdoor temperature to the maximum temperature value corresponding to the current outdoor temperature, finally, the second intermediate temperature is corrected based on the first correction parameter to obtain the target value of the backwater temperature, and after the correction, the final target value can be limited in a certain range, so that the difference between the target value and the current outdoor temperature is avoided to be large, and when the target value is used for controlling the compressor to run, the compressor does not need to run at a high frequency, so that energy can be saved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (10)
1. A method for determining a target value of return water temperature of an air source heat pump is characterized in that a corresponding relation between outdoor temperature and a maximum temperature value and a minimum temperature value is preset, and the method comprises the following steps:
receiving an input set temperature;
determining a current outdoor temperature;
according to the current outdoor temperature, correcting the set temperature, and generating a first intermediate temperature after correction;
determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation;
judging whether the first intermediate temperature is greater than or equal to a minimum temperature value corresponding to the current outdoor temperature and less than or equal to a maximum temperature value corresponding to the current outdoor temperature, if so, determining that a second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature;
and correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump after correction.
2. The method of claim 1,
the step of correcting the set temperature according to the current outdoor temperature to generate a first intermediate temperature after correction includes:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first predetermined temperature, t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
3. The method of claim 1,
the corresponding relation comprises:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
4. The method of claim 1,
the correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after the correction, includes:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
5. The method according to any one of claims 1 to 4,
the step of correcting the second intermediate temperature according to a preset first correction parameter to generate a target value of the return water temperature of the air source heat pump after correction includes:
and subtracting the first correction parameter from the second intermediate temperature to obtain the target value.
6. An apparatus for determining a target value of a return water temperature of an air source heat pump, comprising:
the storage unit is used for storing the corresponding relation between the outdoor temperature and the maximum temperature value and the minimum temperature value;
the receiving unit is used for receiving the input set temperature;
a determination unit for determining a current outdoor temperature;
the first correction unit is used for correcting the set temperature according to the current outdoor temperature and generating a first intermediate temperature after correction; determining a maximum temperature value and a minimum temperature value corresponding to the current outdoor temperature according to the corresponding relation; judging whether the first intermediate temperature is greater than or equal to a minimum temperature value corresponding to the current outdoor temperature and less than or equal to a maximum temperature value corresponding to the current outdoor temperature, if so, determining that a second intermediate temperature is equal to the first intermediate temperature, otherwise, correcting the first intermediate temperature according to the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, and generating the second intermediate temperature after correction, wherein the second intermediate temperature is greater than or equal to the minimum temperature value corresponding to the current outdoor temperature and less than or equal to the maximum temperature value corresponding to the current outdoor temperature;
and the second correction unit is used for correcting the second intermediate temperature according to a preset first correction parameter and generating a target value of the return water temperature of the air source heat pump after correction.
7. The apparatus of claim 6,
the first correcting unit, when executing the correction of the set temperature according to the current outdoor temperature and generating a first intermediate temperature after the correction, is specifically configured to:
determining a third intermediate temperature according to the current outdoor temperature and a first formula, wherein the first formula is as follows:
wherein, T3Is the third intermediate temperature, ToIs the current outdoor temperature, t1Is a first predetermined temperature, t2Is a second predetermined temperature, t1Less than t2；
Determining the first intermediate temperature according to the third intermediate temperature, the set temperature, a preset second correction parameter and a second formula, wherein the second formula is as follows:
wherein, T1Is said first intermediate temperature, TsFor the set temperature, b2Is the second correction parameter, wherein b2Greater than 0.
8. The apparatus of claim 6,
the corresponding relation comprises:
when the outdoor temperature is lower than a first outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is a preset first temperature value;
when the outdoor temperature is more than or equal to the first outdoor temperature value and less than or equal to the second outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions:
when the outdoor temperature is higher than the second outdoor temperature value and lower than a third outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature is the second temperature value;
when the outdoor temperature is greater than or equal to the third outdoor temperature value and less than or equal to a fourth outdoor temperature value, the maximum temperature value corresponding to the outdoor temperature satisfies the following conditions: t ism＝90-to；
And the minimum temperature value corresponding to each outdoor temperature is a preset third temperature value.
9. The apparatus of claim 6,
the first correcting unit, when executing the maximum temperature value and the minimum temperature value corresponding to the current outdoor temperature, corrects the first intermediate temperature, and generates the second intermediate temperature after correction, is specifically configured to:
when the first intermediate temperature is higher than the maximum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the maximum temperature value corresponding to the current outdoor temperature;
and when the first intermediate temperature is lower than the minimum temperature value corresponding to the current outdoor temperature, determining that the second intermediate temperature is the minimum temperature value corresponding to the current outdoor temperature.
10. The apparatus according to any one of claims 6 to 9,
the second correction unit is configured to subtract the first correction parameter from the second intermediate temperature to obtain the target value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888187.6A CN110513931B (en) | 2019-09-19 | 2019-09-19 | Method and device for determining target value of return water temperature of air source heat pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888187.6A CN110513931B (en) | 2019-09-19 | 2019-09-19 | Method and device for determining target value of return water temperature of air source heat pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110513931A CN110513931A (en) | 2019-11-29 |
| CN110513931B true CN110513931B (en) | 2021-04-23 |
Family
ID=68631507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910888187.6A Active CN110513931B (en) | 2019-09-19 | 2019-09-19 | Method and device for determining target value of return water temperature of air source heat pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110513931B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191029A (en) * | 2002-12-12 | 2004-07-08 | Eiichi Negishi | Cold/hot water temperature adjusting device in accordance with change of outside temperature |
| CN102012065A (en) * | 2010-11-26 | 2011-04-13 | 东方电子集团有限公司 | Heating system heat metering and heat energy-saving control method and special device thereof |
| CN102770718A (en) * | 2010-02-24 | 2012-11-07 | 三菱电机株式会社 | Air conditioning system and method of controlling air conditioning system |
| CN104896649A (en) * | 2014-03-05 | 2015-09-09 | 珠海格力电器股份有限公司 | Water outlet set temperature control method and system of air conditioning system |
| CN106016760A (en) * | 2016-07-01 | 2016-10-12 | 顺德职业技术学院 | Energy-saving control method for self-adaptation frequency-conversion heat pump hot water heating system |
| JP2017003225A (en) * | 2015-06-12 | 2017-01-05 | 株式会社竹中工務店 | Heat source control device and heat source system using the same |
| KR101959526B1 (en) * | 2017-11-23 | 2019-03-18 | 린나이코리아 주식회사 | Automatic Control of Heating and Hot Water Temperature of Boiler by Prediction of Water Supply Temperature |
| CN110107989A (en) * | 2019-04-30 | 2019-08-09 | 北京工业大学 | Small-sized based on chilled water return water temperature optimum set point determines frequency water cooler and becomes temperature control method of water |
-
2019
- 2019-09-19 CN CN201910888187.6A patent/CN110513931B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004191029A (en) * | 2002-12-12 | 2004-07-08 | Eiichi Negishi | Cold/hot water temperature adjusting device in accordance with change of outside temperature |
| CN102770718A (en) * | 2010-02-24 | 2012-11-07 | 三菱电机株式会社 | Air conditioning system and method of controlling air conditioning system |
| CN102012065A (en) * | 2010-11-26 | 2011-04-13 | 东方电子集团有限公司 | Heating system heat metering and heat energy-saving control method and special device thereof |
| CN104896649A (en) * | 2014-03-05 | 2015-09-09 | 珠海格力电器股份有限公司 | Water outlet set temperature control method and system of air conditioning system |
| JP2017003225A (en) * | 2015-06-12 | 2017-01-05 | 株式会社竹中工務店 | Heat source control device and heat source system using the same |
| CN106016760A (en) * | 2016-07-01 | 2016-10-12 | 顺德职业技术学院 | Energy-saving control method for self-adaptation frequency-conversion heat pump hot water heating system |
| KR101959526B1 (en) * | 2017-11-23 | 2019-03-18 | 린나이코리아 주식회사 | Automatic Control of Heating and Hot Water Temperature of Boiler by Prediction of Water Supply Temperature |
| CN110107989A (en) * | 2019-04-30 | 2019-08-09 | 北京工业大学 | Small-sized based on chilled water return water temperature optimum set point determines frequency water cooler and becomes temperature control method of water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110513931A (en) | 2019-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110398032B (en) | Air conditioner, electronic expansion valve control method and device thereof and storage medium | |
| CN107178873B (en) | Variable frequency air conditioner and control method thereof | |
| US10914481B2 (en) | Duct-type air conditioning system, and control method and device for indoor ventilator thereof | |
| CN110617610B (en) | Compressor frequency control method, outdoor unit and variable frequency air conditioner | |
| US20190072990A1 (en) | Temperature control system | |
| CN110285551B (en) | Control method and device of air conditioner, air conditioner and electronic equipment | |
| CN107525229A (en) | The method and device of air-conditioning electric heating control | |
| CN110779185A (en) | Operation control method and device, air conditioner and storage medium | |
| CN108800458B (en) | Method and device for controlling frequency of compressor in air conditioner | |
| CN112696798A (en) | Parameter setting method of air conditioner, air conditioning apparatus, and computer-readable storage medium | |
| CN110513931B (en) | Method and device for determining target value of return water temperature of air source heat pump | |
| JP6356502B2 (en) | Equipment operation setting device and equipment operation setting value determination program | |
| CN110905813A (en) | Control method, device, storage medium and equipment of inverter type compressor | |
| CN113739447B (en) | Variable frequency heat pump temperature self-adaptive control method, device, equipment and storage medium | |
| JP5371925B2 (en) | Air conditioning control system | |
| CN110470027B (en) | Direct current fan adjusting method, controller and temperature adjusting system | |
| US20220154960A1 (en) | Air-conditioning control device, air-conditioning system, air-conditioning control method, and non-transitory computer readable recording medium | |
| CN116182369A (en) | Method and device for controlling air outlet temperature of air conditioner, air conditioner and storage medium | |
| CN113531847B (en) | Air conditioning system control method and device, air conditioning system and storage medium | |
| EP4053668A1 (en) | Water temperature control method for swimming pool heat pump system, apparatus, device, and storage medium | |
| CN112032973B (en) | Heat accumulation instruction issuing control method | |
| CN108981185B (en) | Water heater, electronic expansion valve control method, control device and readable storage medium | |
| CN112902414A (en) | Control method of fresh air system, fresh air system and computer readable storage medium | |
| CN114110998B (en) | Air conditioner operation frequency control method, air conditioner and storage medium | |
| US20230097395A1 (en) | Smart energy management of the heating, ventilation, and air conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |