CN107940546A - The control method and device of supply water temperature - Google Patents
The control method and device of supply water temperature Download PDFInfo
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- CN107940546A CN107940546A CN201711167556.XA CN201711167556A CN107940546A CN 107940546 A CN107940546 A CN 107940546A CN 201711167556 A CN201711167556 A CN 201711167556A CN 107940546 A CN107940546 A CN 107940546A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a kind of control method and device of supply water temperature, wherein, the control method of supply water temperature includes：Obtain user and set indoor temperature Tn,s；Obtain outdoor temperature Tw；According to Tn,sWith TwBetween temperature difference, designed outside temperature Tw,d, indoor design temperature Tn,d, water supply design temperature Tg,dAnd the Tn,sDetermine water supply target temperature Tg,s.The present invention is realized sets indoor temperature self adaptive control leaving water temperature according to outdoor temperature and user.
Description
Technical Field
The invention relates to the field of cooling and heating system control, in particular to a method and a device for controlling water supply temperature.
Background
The heat pump cold and hot water unit is mainly used for generating cold water or hot water, providing the cold water or the hot water for the fan coil or the floor heating coil and other terminals, and transferring heat to the indoor space through the terminals so as to supply cold or heat.
In the related art, the indoor temperature is usually set indirectly by manually setting the temperature of the hot water supplied by the heat pump chiller-heater unit by a user, and many users usually set a fixed temperature. The indoor temperature can change along with the change of outdoor temperature, but the hot water temperature of heat pump hot and cold water unit heating keeps unchangeable, and this kind of condition results in indoor temperature fluctuation to reduce user's comfort.
Chinese patent publication No. CN104896649a discloses a method and system for controlling set temperature of outlet water of an air conditioning system, wherein the method comprises the following steps: the method comprises the steps of obtaining a detected outdoor environment temperature value and an upper limit value and a lower limit value of a set environment temperature set by a user, judging and comparing whether the outdoor environment temperature value is larger than or equal to the upper limit value of the set environment temperature or smaller than or equal to the lower limit value of the set environment temperature, and controlling the set outlet water temperature according to a judgment and comparison result.
According to the technical scheme, the set outlet water temperature can be associated with the outdoor environment temperature, and the set outlet water temperature is changed along with the change of the outdoor environment temperature. However, according to the technical scheme of the patent, a user needs to set an upper limit value and a lower limit value of the ambient temperature, and the user cannot determine whether the set upper limit value and the set lower limit value are accurate or not. Further, it is directly assumed that the indoor set temperature is constant, and the case where the user room temperature setting is changed is not considered. In addition, when the temperature is greater than the upper limit value of the set environment temperature or less than or equal to the lower limit value of the set environment temperature, only the set temperature range of the water temperature is provided, and the unit cannot be automatically controlled. Finally, the user sets the upper limit value and the lower limit value of the environmental temperature only for one indoor temperature.
Aiming at the technical problem of how to determine the water supply temperature in a self-adaptive manner according to the outdoor temperature in the related art, no effective solution is provided at present.
Disclosure of Invention
The invention provides a method and a device for controlling water supply temperature, which at least solve the technical problem of self-adaptively determining the water supply temperature according to outdoor temperature in the prior art.
In order to solve the above technical problem, according to an aspect of an embodiment of the present invention, there is provided a method for controlling a temperature of supplied water, including: obtaining indoor temperature T set by user n,s (ii) a Obtaining an outdoor temperature T w (ii) a According to T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s 。
In certain embodiments, according to T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s The method comprises the following steps: determining said T according to the following formula gs ：
In certain embodiments, the above method further comprises: if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max To supply water to a target temperature T g,s Is set to T max (ii) a If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min Supply water to the target temperature T g,s Is set to T min (ii) a If the water supply target temperature T g,s At T max And T min To supply water to the target temperature T g,s Is set to T g,s 。
In certain embodiments, the above method further comprises: if the water is to be supplied with the target temperature T g,s Is set to T max Or T min Repeating the above process to determine T after every first time interval g,s Up to the water supply target temperature T g,s At T max And T min In the meantime.
In certain embodiments, the above method further comprises: if the water is to be supplied with the target temperature T g,s Is set to T g,s After a second time interval, detecting the indoor temperature T n Judgment of T n Whether the error is within the error range delta T; when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T g,s Is set to T g,s +1; when T is n Greater than T n,s And the difference is larger than delta T, the water supply target temperature T is measured g,s Is set to T g,s -1。
In order to solve the above technical problem, according to another aspect of an embodiment of the present invention, there is provided a control apparatus for controlling a temperature of supplied water, including: an acquisition module for acquiring indoor temperature T set by a user n,s And obtaining the outdoor temperature T w (ii) a A determination module for determining according to T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of the water supply g,s 。
In some embodiments, the determining module is configured to determine the T according to the following equation gs ：
In some embodiments, the determining module is further configured to: if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max Supply water to the target temperature T g,s Is set to T max (ii) a If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min Supply water to the target temperature T g,s Is set to T min (ii) a If the water supply target temperature T g,s At T max And T min To supply water to the target temperature T g,s Is set to T g,s 。
In some embodiments, the determining module is further configured to: if the water is to be supplied with the target temperature T g,s Is set to T max Or T min Repeating the above process to determine T after every first time interval g,s Up to the water supply target temperature T g,s At T max And T min In the meantime.
In some embodiments, the determining module is further configured to: if the water is to be supplied with the target temperature T g,s Is set to T g,s After a second time interval, detecting the indoor temperature T n Judging the said T n Whether the error is within the error range delta T; when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T g,s Is set to T g,s +1; when T is n Greater than T n,s And the difference is larger than delta T, the target temperature T of the water supply g,s Is set to T g,s -1。
In the invention, the indoor temperature T set by a user is obtained ns And outdoor temperature T w According to T n,s And T w Temperature difference between them, water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s The self-adaptive adjustment of the water supply temperature according to the outdoor temperature and the indoor temperature set by the user is realized, the parameter setting by the user is not needed, and the comfort level of the user is improved.
Drawings
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling the temperature of the supplied water according to an embodiment of the present invention;
fig. 3 is a flowchart of a method for controlling the temperature of the supplied water according to an embodiment of the present invention; and
fig. 4 is a block diagram of a control device for water supply temperature according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
Fig. 1 is a schematic diagram of a system according to an embodiment of the present invention, as shown in fig. 1, the system includes: a heat pump water cooling and heating machine 10 for providing a heat source or a refrigeration source; a heat exchange end 20; the manual operator 30 is used for setting parameters such as indoor temperature and the like by a user; a controller 40 for controlling a water supply target temperature; a feed water temperature sensor 50 for detecting an actual feed water temperature; an indoor temperature sensor 60 for detecting an indoor actual temperature; an ambient temperature sensor or weather forecast data interface 70 for obtaining outdoor temperature.
In the examples of the present invention, the terms are explained as follows:
(1) Outdoor temperature related terms:
outdoor design temperature T w,d : the temperature can be obtained by inquiring a heating and ventilation manual and is divided into a heating outdoor design temperature T w,dh Outside design temperature T of cooling chamber w,dc 。
Outdoor temperature T w : which can be detected by the ambient temperature sensor 70.
(2) Indoor temperature related terms:
indoor design temperature T n,d : the temperature can be obtained by inquiring a heating and ventilation manual and is divided into a heating indoor design temperature T n,dh Design temperature T in cooling room n,dc 。
User-set indoor temperature T n,s : set by the user on the hand operator 30.
Indoor temperature T n : can be measured by the indoor temperature sensor 60.
(3) The term relating to the temperature of the supplied water:
design temperature T of water supply g,d : the water supply temperature required by the tail end when the heat balance is achieved is determined by a certain building and the tail end at the outdoor design temperature and the indoor design temperature; design water supply temperature T for heating g,dh Design of supply water temperature T g,dc 。
Target temperature T of water supply g,s Calculated by the controller 40 according to a program.
Actual feed water temperature Tg: the objective existing temperature can be obtained by the test of the water supply temperature sensor 5.
For a certain building, when the tail end is configured, load calculation needs to be carried out on the building; then selecting the heat exchange area at the tail end and the water supply temperature according to the calculation result;
when a building heating design mainly for heating is performed, the design temperature T of the heating outdoor of a certain place is known w,dh Indoor design temperature T of heating n,dh The designed heat load of the building can be calculated according to the envelope parameters provided by the user; selecting the end heating design water supply temperature T according to the design heat load g,dh And area. If the same end is used for cooling in summer, the design temperature T is determined according to the local cooling outdoor w,dc And a target value T of the design temperature in the cooling chamber n,dc The design cold load and the design water supply temperature T of the building can be calculated g,dc 。
The calculation method of the cooling-based building is similar, and the calculation order of the cooling and heating loads is exchanged, namely the end area is determined by the design cooling load.
In the system shown in fig. 1, a heat pump water chiller 10 provides cold/hot water to a heat exchange end 20 for cooling/heating a room. The hand operator 30 is typically located indoors for inputting a user-set indoor temperature T n,s (ii) a Professional setting parameter T w,d ，T g,d ，T n,d . The water supply temperature sensor 50 is generally arranged on a water supply pipeline of the unit and used for detecting the actual outlet water temperature; an indoor temperature sensor 60 is disposed indoors for detecting an indoor temperature T n . An ambient temperature sensor 70, typically disposed on the outboard machine; optionally, a weather data interface 70 for downloading weather forecast data in real time for providing outdoor temperature data T w . The controller 40 controls the operation of the heat pump water chiller/heater 10 after a series of calculations.
According to one aspect of the embodiment of the invention, a control method of the water supply temperature is provided to realize the self-adaptive adjustment of the water supply temperature according to the outdoor temperature and the indoor temperature set by the user.
Fig. 2 is a flowchart of a method for controlling a temperature of supplied water according to an embodiment of the present invention, and as shown in fig. 2, the method includes steps S202 to S204.
Step S202, acquiring indoor temperature T set by user ns And outdoor temperature T w 。
Step S204, according to T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s 。
In the invention, the indoor temperature T set by the user is obtained ns And outdoor temperature T w According to T n,s And T w Temperature difference between them, water supply design temperature T g,d And T n,s Determining a target temperature T of the water supply g,s The self-adaptive adjustment of the water supply temperature according to the outdoor temperature and the indoor temperature set by the user is realized, the parameter setting by the user is not needed, and the comfort level of the user is improved.
In certain embodiments, in step S204, according to T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s The method comprises the following steps: t is determined according to the following formula (1) gs ：
In some embodiments, if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max Supply water to the target temperature T g,s Is set to T max (ii) a If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min Supply water to the target temperature T g,s Is set to T min (ii) a If the water supply target temperature T g,s At T max And T min To supply water to the target temperature T g,s Is set to T g,s 。
In certain embodiments, the above method further comprises: if the water is to be supplied with the target temperature T g,s Is set to T max Or T min Repeating the above process to determine T after every first time interval g,s Up to the water supply target temperature T g,s At T max And T min In the meantime.
In some embodiments, the method further comprises: if the water is to be supplied with the target temperature T g,s Is set to T g,s After a second time interval, detecting the indoor temperature T n Judgment of T n Whether the error is within the error range delta T; when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T g,s Is set to T g,s +1; when T is n Greater than T n,s And the difference is larger than delta T, the water supply target temperature T is measured g,s Is set to T g,s -1。
In certain embodiments, the second time interval is greater than the first time interval.
An alternative control method according to an embodiment of the present invention will be described below with heating as an example. In the cooling mode, the control method is the same, and is not described herein.
In this alternative control method, in the heating mode, the operation outdoor temperature range and the water supply temperature range are set as shown in table 1, and are generally built in the controller 40 or the manual operator 30 before shipment.
TABLE 1
When installing the unit in a certain area, the installer can input the following professional setting parameters in the manual operator 30 according to the data provided by the user: outdoor design temperature T w,d ＝T w,dh (ii) a Indoor design temperature T n,d ＝T n,dh (ii) a Design water supply temperature T g,d ＝T g,dh . When the user uses the hand operator 30 to set the indoor temperature T n,s 。
Fig. 3 is a flowchart of a method for controlling a water supply temperature according to an embodiment of the present invention, as shown in fig. 3,
step S302: obtaining T n,s 、T w,d 、T g,d 、T n,d And a built-in parameter T 01 、T 02 、T 03 And T 04 。
Step S304, detecting the outdoor temperature T w 。
Step S306, judging T w Whether within an outdoor temperature range in which the unit may operate. In the embodiment of the invention, T 01 ≤T w ≤T 02 。
If T w If the range is exceeded, the process goes to step S308 to shut down, and prompt is performed, and detection is performed after a period of time.
If the temperature is within the upper and lower limits, the process proceeds to step S310, where the target water supply temperature T is calculated using the formula (1) g,s 。
Step S312, judging T g,s Whether in the unit water supply temperature range, i.e. T 03 ≤T g,s ≤T 04 。
If T g,s <T 03 If the temperature is less than the lower limit of the water supply temperature range of the unit, the step S314 is entered, and the target value of the water supply temperature is set as the lower limit value T 03 After the N time, the process returns to step S304.
If T g,s >T 04 If the temperature is greater than the upper limit of the water supply temperature range of the unit, the step S316 is entered, and the target value of the water supply temperature is set as the upper limit value T 04 After the N time, the process returns to step S304.
If the range is between the upper and lower limits, the process proceeds to step S318, where T is set g,s Detecting the indoor temperature T after M time for the temperature calculated by the formula (1) n 。
Step S320, judging the indoor temperature T n Whether or not the indoor target temperature T is reached n,s Allowable range.
If T n -T n,s If <. DELTA.T, the flow proceeds to step S322 to raise the target value of the feed water temperature by 1 deg.C, and the flow returns to step S312.
If T is n -T n,s If Δ T is greater than Δ T, the flow proceeds to step S324 to lower the feed water temperature target value by 1 ℃, and the flow returns to step S312.
If the time is within the allowable range, the process proceeds to step S326, and returns to step S304 after N times.
In this example, the recommended range for Δ T is 1 to 3 ℃; m < N, and the recommended range of N is 40-120 min.
In order to solve the above technical problem, according to another aspect of an embodiment of the present invention, there is provided a control apparatus for a temperature of supplied water.
Fig. 4 is a block diagram of a control device for controlling the temperature of supplied water according to an embodiment of the present invention, as shown in fig. 4, the device includes: an obtaining module 40 for obtaining the indoor temperature T set by the user n,s And obtaining the outdoor temperature T w (ii) a A determining module 42 connected to the obtaining module 40 for determining the T n,s And T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And T n,s Determining a target temperature T of water supply g,s 。
In certain embodiments, determination module 42 is configured to determine T according to equation (1) g,s 。
In some embodiments, the determining module 42 is further configured to: if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max Supply water to the target temperature T g,s Is set to T max (ii) a If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min To supply water to a target temperature T g,s Is set to T min (ii) a If the water supply target temperature T g,s At T max And T min In the same way, the water supply target temperature T g,s Is set to T g,s 。
In some embodiments, the determining module 42 is further configured to: if the water is to be supplied with the target temperature T g,s Is set to T max Or T min Repeating the above process to determine T after every first time interval g,s Up to the water supply target temperature T g,s At T max And T min In the meantime.
In some embodiments, the determining module 42 is further configured to: if the water is to be supplied with the target temperature T g,s Is set to T g,s After a second time interval, the indoor temperature T is detected n Judging the said T n Whether the error is within the error range delta T; when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T g,s Is set to T g,s +1; when T is n Greater than T n,s And the difference is larger than delta T, the target temperature T of the water supply g,s Is set to T g,s -1。
With regard to the apparatus in the above embodiments, the specific manner in which each unit and each module performs operations has been described in detail in the embodiments related to the method, and will not be described in detail herein.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. A method for controlling the temperature of a supply of water, comprising:
obtaining indoor temperature T set by user n,s ；
Obtaining an outdoor temperature T w ；
According to said T n,s And said T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And said T n,s Determining a target temperature T of water supply g,s 。
2. The method of claim 1, wherein the T is based on n,s And said T w Temperature difference between them, chamberExternal design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And said T n,s Determining a target temperature T of water supply g,s The method comprises the following steps: determining said T according to the following formula g,s ：
3. The method of claim 1 or 2, further comprising:
if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max Setting the target water supply temperature T g,s Is set to the T max ；
If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min Setting the target water supply temperature T g,s Is set to the T min 。
4. The method of claim 3, further comprising:
if the water supply target temperature T is set g,s Is set to the T max Or the T min Repeating the above process to determine T after every first time interval g,s Up to said water supply target temperature T g,s At the T max And T min In the meantime.
5. The method of claim 3 or 4, further comprising:
if the water supply target temperature T is set g,s At the T max And said T min After a second time interval, the indoor temperature T is detected n Judging the said T n Whether the error is within the error range delta T;
when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T is measured g,s Is set to T g,s +1；
When T is n Greater than T n,s And the difference is larger than delta T, the target water supply temperature T is adjusted g,s Is set to T g,s -1。
6. A control device for the temperature of water supply, comprising:
an acquisition module for acquiring indoor temperature T set by a user n,s And obtaining the outdoor temperature T w ；
A determination module for determining T n,s And said T w Temperature difference therebetween, outdoor design temperature T w,d Indoor design temperature T n,d Water supply design temperature T g,d And said T n,s Determining a target temperature T of water supply g,s 。
7. The apparatus of claim 6, wherein the determination module is configured to determine the T according to the following equation g,s ：
8. The apparatus of claim 6 or 7, wherein the determination module is further configured to: if the water supply target temperature T g,s Greater than or equal to the upper limit T of the water supply temperature max Setting the target water supply temperature T g,s Is set to the T max (ii) a If the water supply target temperature T g,s Less than or equal to the lower limit T of the water supply temperature min Setting the target water supply temperature T g,s Is set to the T min 。
9. The apparatus of claim 8, wherein the determination module is further configured to: if the water supply target temperature T is set g,s Is set to the T max Or the T min Repeating the above process to determine T after every first time interval g,s Up to the water supply meshTarget temperature T g,s At the T max And T min In the meantime.
10. The apparatus of claim 8 or 9, wherein the determining module is further configured to: if the water supply target temperature T is set g,s At the T max And said T min After a second time interval, the indoor temperature T is detected n Judging the said T n Whether the error is within the error range delta T; when T is n Less than T n,s And the difference is less than-delta T, the water supply target temperature T is measured g,s Is set to T g,s +1; when T is n Greater than T n,s And the difference is larger than delta T, the target water supply temperature T is adjusted g,s Is set to T g,s -1。
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| CN111076275A (en) * | 2019-12-31 | 2020-04-28 | 北京华远意通热力科技股份有限公司 | Energy-saving temperature control device for heating pipeline |
| CN114251813A (en) * | 2021-12-21 | 2022-03-29 | 石家庄科林电气股份有限公司 | Control method of ground source heat pump central air-conditioning system |
| CN114484555A (en) * | 2022-01-11 | 2022-05-13 | 烽台科技（北京）有限公司 | Heat supply temperature recommendation method and device, electronic equipment and readable storage medium |
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