CN112944429B - Heat pump unit and control method thereof - Google Patents
Heat pump unit and control method thereof Download PDFInfo
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- CN112944429B CN112944429B CN202110144870.6A CN202110144870A CN112944429B CN 112944429 B CN112944429 B CN 112944429B CN 202110144870 A CN202110144870 A CN 202110144870A CN 112944429 B CN112944429 B CN 112944429B
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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
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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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
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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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
- F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
- F24D19/1072—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water the system uses a heat pump
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
The present disclosure provides a heat pump unit and a control method thereof, the heat pump unit including: the detection unit is used for collecting the use habits of a user in a certain period after the unit is started for the first time; a control unit for drawing a recent heating time curve to obtain an accurate heating time period distribution FiAnd heating power value Di(ii) a The control unit is also used for drawing a recent water consumption curve according to time change to obtain accurate water consumption time period distribution HjAnd power value E of hot water productionj(ii) a The detection unit detects the current DiAnd Ej(ii) a The control unit, when Di＜xEjWhen the heat pump unit is started, the heat pump unit is controlled to start heating or increase the heating quantity; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity. According to the method and the device, the priority of operation of two requirements of heating and hot water can be judged based on different requirements of hot water amount under different environmental temperatures, the heating or hot water can be realized according to different priorities, and the power of the whole heat pump system can be reduced.
Description
Technical Field
The disclosure relates to the technical field of heat pumps, in particular to a heat pump unit and a control method thereof.
Background
At present, partial household heat pump units in the market relate to refrigeration, heating and hot water making functions, refrigeration is realized through a tail end fan coil, heating is realized through a fan coil or floor heating, and hot water making is realized through a water tank.
The demands of domestic hot water and heating are different all the year round, and the demands of users on the domestic hot water and the heating are different in different time periods in a day. At present, in most household heat pump units, only simple control logics are used for controlling heating and hot water demand coexistence, the heating and hot water demand coexistence is firstly carried out, and the user is inconsistent with the heating and hot water demand in different areas and different time periods, so that the comfort level of the heat pump unit is reduced. Meanwhile, as the hot water making function of the unit is to stop at a fixed temperature and then restart at the fixed temperature, if the unit is restarted, the water is not needed actually, and certain resources are wasted.
Because the heat pump unit in the prior art usually takes heating as a main part and heating water as an auxiliary part, but in different areas and different time periods, the requirements of users on heating and heating water are not consistent, so that the comfort of customers is low and the running cost of the system is reduced; and the hot water making function is to stop at a fixed temperature and then restart at the fixed temperature, and if the hot water making function is restarted, the hot water making function does not actually need water, and has certain waste of resources and other technical problems, so the heat pump unit and the control method thereof are researched and designed in the disclosure.
Disclosure of Invention
Therefore, the technical problem to be solved by the present disclosure is to overcome the defects that in the prior art, a heat pump unit usually uses heating as a main component and heating water as an auxiliary component, but in different regions and different time periods, the user's requirements for heating and heating water are not consistent, so that the comfort of the user is low and the running cost of the system is reduced, thereby providing a heat pump unit and a control method thereof.
In order to solve the above problem, the present disclosure provides a heat pump unit, which includes:
compressor, outdoor heat exchanger, interior machine and water tank still include:
the detection unit is used for collecting the use habits of a user in a certain period after the unit is started for the first time, and comprises at least one of data of detecting the ambient temperature T, the heating starting time X, the heating stopping time Y, the water using starting time A, the water using stopping time B, the heating power D and the water heating power E;
a control unit for drawing a short heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve;
the control unit is also used for drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity EjWherein j represents the jth time period, and gives hot water supply time suggestions according to a standard water use distribution curve;
the detection unit is also used for detecting that the indoor temperature is in the heating demand temperature range (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judgment unit for judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control unit, when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detection unit is further configured to detect an indoor temperature when heating and hot water making requirements coexist;
the judging unit is used for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
the control unit is also used for controlling the heat pump unit to start heating or increase the heating quantity when the indoor temperature is not within the heating demand temperature range (A ℃, B ℃), and to close the heating water or maintain the existing state of the heating water unchanged, wherein A is the lower limit of the heating demand temperature, and B is the upper limit of the heating demand temperature.
In some embodiments, the determining unit determines that D is less thani＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control unit is used for judging whether the current time point is relative to HjAnd is closer to FiThen controlling the heat pump unit to start heating or increase heating quantity, and closing heating water or maintainingKeeping the existing state of the hot water unchanged; if the current time point is relative to FiAnd is closer to HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detecting unit is further configured to detect and obtain an average indoor ambient temperature L in a recent heating time period and an average indoor ambient temperature K in a recent water usage time period before the actions of heating, coexisting heating water demand and detecting indoor temperature;
the judging unit is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating water and heating water at the same time according to the determined time point.
The present disclosure also provides a method for controlling a heat pump unit as described above, including:
the method comprises the following steps of detecting, after a unit is started for the first time, collecting user use habits in a certain period, wherein the user use habits comprise at least one of data of detecting environmental temperature T, heating starting time X, heating stopping time Y, water using starting time A, water using stopping time B, heating power D and water heating power E;
a control step for drawing a recent heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve;
the control step is also used for drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, obtaining accurate water consumption time period distribution Hj (j is 1,2,3, …, n) and corresponding water heating power value Ij, wherein j represents the jth time period, and providing a hot water supply time suggestion according to a standard water consumption distribution curve;
the detection step also comprisesThe indoor temperature is in the range of the temperature required for heating (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judging step of judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control step is carried out when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detecting step is further used for detecting the indoor temperature when the heating and the hot water demand coexist;
a judging step for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
and the control step is also used for controlling the heat pump unit to start heating or increase the heating quantity and close the heating water or maintain the existing state of the heating water unchanged when the indoor temperature is not within the heating requirement temperature range (A ℃, B ℃), wherein A is the lower limit of the heating requirement temperature, and B is the upper limit of the heating requirement temperature.
In some embodiments, the determining step is performed when Di＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control step is that if the current time point is relative to HjAnd is closer to FiControlling the heat pump unit to start heating or increase the heating quantity, and closing the heating water or keeping the existing state of the heating water unchanged; if the current time point is relative to FiAnd is closer to HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detecting step is further configured to detect and obtain an average indoor ambient temperature L in a recent heating time period and an average indoor ambient temperature K in a recent water usage time period before the actions of heating, coexistence of heating water demand, and detection of indoor temperature;
the judging step is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating water and heating water at the same time according to the determined time point.
The heat pump unit and the control method thereof provided by the disclosure have the following beneficial effects:
the method obtains accurate heating time period distribution I by drawing a short-term heating time curve according to the indoor temperature and the threshold value thereof and eliminating useless or short time periodi(i ═ 1,2,3, …, n) and corresponding heating power values JiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve; drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity value IjJ represents the jth time period, a hot water supply time suggestion is given according to a standard water distribution curve, big data can be formed based on different hot water quantity demands at different environmental temperatures, the priority of operation of two demands of heating and hot water heating is judged, the two demands are not heating mainly and heating water is used as an auxiliary, namely, the heating or hot water heating is intelligently performed according to the hot water quantity demands and different priorities according to the habits of users on the heating and hot water demands and the combination of the environmental temperatures, the comfort of the users is ensured, and the system operation cost is reduced; this is disclosed still through when heating and system hot water demand coexist, and when indoor temperature satisfies the demand temperature range that heats, detect and judge DiAnd xEjThe power of the whole heat pump system can be effectively reduced and the energy efficiency value can be improved under the condition of the same requirements of heating and water heating.
Drawings
FIG. 1 is a system block diagram of a heat pump unit of the present disclosure;
fig. 2 is a control logic diagram of the control method of the heat pump unit disclosed in the present disclosure.
The reference numerals are represented as:
1. a compressor; 2. an outdoor heat exchanger; 3. an internal machine; 4. a water tank; 41. a hot water outlet; 42. an upper temperature sensing port; 43. a lower temperature sensing port; 44. an electrically assisted hot button; 45. a cold water inlet; 5. a subcooler; 6. gas separation; 71. a four-way valve A; 72. a four-way valve B; 81. gas side tubes (high pressure); 82. gas side tube (low pressure); 83. A liquid side pipe; 91. a large valve; 92. a small valve.
Detailed Description
As shown in fig. 1-2, the present disclosure provides a heat pump unit comprising:
compressor 1, outdoor heat exchanger 2, interior machine 3 and water tank 4 still include:
the detection unit is used for collecting the use habits of a user in a certain period after the unit is started for the first time, and comprises at least one of data of detecting the ambient temperature T, the heating starting time X, the heating stopping time Y, the water using starting time A, the water using stopping time B, the heating power D and the water heating power E;
a control unit for drawing a short heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein I represents the ith time period, and gives a heating time suggestion according to an accurate heating time distribution curve (the time period with shorter time is all the time periods I)iA period of time less than the average period of time ═ Ii)/n;
the control unit is also used for drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity EjWherein j represents the jth time period and provides hot water supply time according to the standard water use distribution curveConference (the time period with lower unit power and less water consumption is all the time period HjTime period less than the average time period in (Σ H)j)/n)；
The detection unit is also used for detecting that the indoor temperature is in the heating demand temperature range (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judgment unit for judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control unit, when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
The method obtains accurate heating time period distribution I by drawing a short-term heating time curve according to the indoor temperature and the threshold value thereof and eliminating useless or short time periodi(i ═ 1,2,3, …, n) and corresponding heating power values JiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve; drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity value IjJ represents the jth time period, a hot water supply time suggestion is given according to a standard water distribution curve, big data can be formed based on different hot water quantity demands at different environmental temperatures, the priority of operation of two demands of heating and hot water heating is judged, the two demands are not heating mainly and heating water is used as an auxiliary, namely, the heating or hot water heating is intelligently performed according to the hot water quantity demands and different priorities according to the habits of users on the heating and hot water demands and the combination of the environmental temperatures, the comfort of the users is ensured, and the system operation cost is reduced; the present disclosure also satisfies the heating demand temperature range by the indoor temperature when the heating and the hot water demand coexistThen, D is detected and judgediAnd xEjThe power of the whole heat pump system can be effectively reduced and the energy efficiency value can be improved under the condition of the same requirements of heating and water heating.
In some embodiments, the detection unit is further configured to detect an indoor temperature when heating and hot water making requirements coexist;
the judging unit is used for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
the control unit is also used for controlling the heat pump unit to start heating or increase the heating quantity when the indoor temperature is not within the heating demand temperature range (A ℃, B ℃), and to close the heating water or maintain the existing state of the heating water unchanged, wherein A is the lower limit of the heating demand temperature, and B is the upper limit of the heating demand temperature.
The control means of the heat pump unit disclosed by the invention can control the heating water on the basis of preferably meeting the condition of indoor heating comfort degree by further detecting and judging whether the indoor temperature is in the heating demand temperature range (A ℃ and B ℃) when the heating and heating water demands coexist, and because the indoor environment temperature does not meet the comfort degree requirement of a human body when the indoor temperature is not in the heating demand temperature range (A ℃ and B ℃), the indoor heating quantity is firstly increased or the heating is started, the heating water is closed or the existing state of the heating water is maintained unchanged, the indoor temperature can be increased to the temperature range of the heating demand to the maximum degree or the maximum speed, and the human body heating comfort degree is preferably met.
In some embodiments, the determining unit determines that D is less thani＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control unit is used for judging whether the current time point is relative to HjAnd is closer to FiControlling the heat pump unit to start heating or increase the heating quantity, and closing the heating water or keeping the existing state of the heating water unchanged; if the current time point is relative to FiTo get closer toNear HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detecting unit is further configured to detect and obtain an average indoor ambient temperature L in a recent heating time period and an average indoor ambient temperature K in a recent water usage time period before the actions of heating, coexisting heating water demand and detecting indoor temperature;
the judging unit is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating and hot water at the same time according to the determined time point, wherein b is a constant.
The logic of the priority determination method of the present disclosure is as follows:
1) after the unit is started for the first time, collecting user use habits including data of ambient temperature T, heating starting time X, heating stopping time Y, water using starting time A, water using stopping time B, actual water consumption C, heating power D, heating water power E and the like in a certain time period;
2) drawing a short-term heating time curve according to the indoor temperature and a corresponding threshold value, eliminating useless or short time periods, and obtaining accurate heating time period distribution Fi(i ═ 1,2,3, ·, n) and the corresponding heating power DiProviding a heat supply time suggestion according to an accurate heating time distribution curve;
3) drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, obtaining accurate water consumption time period distribution Hj (j is 1,2,3, n) and corresponding hot water making power value Ej, and giving a hot water supply time suggestion according to the accurate water consumption distribution curve;
4) analyzing the average environmental temperature K of the recent water using time period and the average environmental temperature L of the heating time period to form memory;
based on the big data
Firstly, judging the current time point when the environment temperature is in a certain range of the average environment temperature K/L; analyzing whether the heating and hot water requirements exist at the same time in the recent period according to the judged time point;
when the heating and hot water making requirements coexist, preferentially judging whether the indoor temperature is in the set temperature range of the internal machine [ A, B ], and preferentially heating if the indoor temperature is not in the range;
if the indoor temperature is within the range, comparing the heating and hot water making power values at the time point by combining with the heat supply and hot water supply time suggestions;
comparison Di、xEjValue when Di＞xEjWhen the water is needed, hot water is preferentially produced; when D is presenti＜xEjWhen the heat is generated, the heat is preferentially generated; when D is presenti＝xEjWhen it is determined that the time point is Fi、HjAnd determining the priority of heating and water heating according to the relative position.
Wherein n is a proportionality coefficient
5) When the user has a clearly defined heating and water heating requirement, the user's clearly defined function is the priority.
The present disclosure also provides a method for controlling a heat pump unit as described above, including:
the method comprises the following steps of detecting, after a unit is started for the first time, collecting user use habits in a certain period, wherein the user use habits comprise at least one of data of detecting environmental temperature T, heating starting time X, heating stopping time Y, water using starting time A, water using stopping time B, heating power D and water heating power E;
a control step for drawing a recent heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve;
the control step is also used for drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, obtaining accurate water consumption time period distribution Hj (j is 1,2,3, …, n) and corresponding water heating power value Ij, wherein j represents the jth time period, and providing a hot water supply time suggestion according to a standard water consumption distribution curve;
the detection step is also used for detecting that the indoor temperature is in the heating demand temperature range of (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judging step of judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control step is carried out when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
The method obtains accurate heating time period distribution I by drawing a short-term heating time curve according to the indoor temperature and the threshold value thereof and eliminating useless or short time periodi(i ═ 1,2,3, …, n) and corresponding heating power values JiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve; drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity value IjJ represents the jth time period, a hot water supply time suggestion is given according to a standard water distribution curve, big data can be formed based on different hot water quantity demands at different environmental temperatures, the priority of operation of two demands of heating and hot water heating is judged, the two demands are not heating mainly and heating water is used as an auxiliary, namely, the heating or hot water heating is intelligently performed according to the hot water quantity demands and different priorities according to the habits of users on the heating and hot water demands and the combination of the environmental temperatures, the comfort of the users is ensured, and the system operation cost is reduced; the present disclosure also satisfies heating requirements by satisfying both heating and hot water requirements and by satisfying indoor temperatureWhen the temperature is within the range, detecting and judging DiAnd xEjThe power of the whole heat pump system can be effectively reduced and the energy efficiency value can be improved under the condition of the same requirements of heating and water heating.
In some embodiments, the detecting step is further used for detecting the indoor temperature when the heating and the hot water demand coexist;
a judging step for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
and the control step is also used for controlling the heat pump unit to start heating or increase the heating quantity and close the heating water or maintain the existing state of the heating water unchanged when the indoor temperature is not within the heating requirement temperature range (A ℃, B ℃), wherein A is the lower limit of the heating requirement temperature, and B is the upper limit of the heating requirement temperature.
The control means of the heat pump unit disclosed by the invention can control the heating water on the basis of preferably meeting the condition of indoor heating comfort degree by further detecting and judging whether the indoor temperature is in the heating demand temperature range (A ℃ and B ℃) when the heating and heating water demands coexist, and because the indoor environment temperature does not meet the comfort degree requirement of a human body when the indoor temperature is not in the heating demand temperature range (A ℃ and B ℃), the indoor heating quantity is firstly increased or the heating is started, the heating water is closed or the existing state of the heating water is maintained unchanged, the indoor temperature can be increased to the temperature range of the heating demand to the maximum degree or the maximum speed, and the human body heating comfort degree is preferably met.
In some embodiments, the determining step is performed when Di＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control step is that if the current time point is relative to HjAnd is closer to FiControlling the heat pump unit to start heating or increase the heating quantity, and closing the heating water or keeping the existing state of the heating water unchanged; if the current time point is relative to FiAnd is closer to HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
In some embodiments, the detecting step is further configured to detect and obtain an average indoor ambient temperature L in a recent heating time period and an average indoor ambient temperature K in a recent water usage time period before the actions of heating, coexistence of heating water demand, and detection of indoor temperature;
the judging step is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating water and heating water at the same time according to the determined time point.
The logic of the priority determination method of the present disclosure is as follows:
1) after the unit is started for the first time, collecting user use habits including data of ambient temperature T, heating starting time X, heating stopping time Y, water using starting time A, water using stopping time B, actual water consumption C, heating power D, heating water power E and the like in a certain time period;
2) drawing a short-term heating time curve according to the indoor temperature and a corresponding threshold value, eliminating useless or short time periods, and obtaining accurate heating time period distribution Fi(i ═ 1,2,3, ·, n) and the corresponding heating power DiProviding a heat supply time suggestion according to an accurate heating time distribution curve;
3) drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, obtaining accurate water consumption time period distribution Hj (j is 1,2,3, n) and corresponding hot water making power value Ej, and giving a hot water supply time suggestion according to the accurate water consumption distribution curve;
4) analyzing the average environmental temperature K of the recent water using time period and the average environmental temperature L of the heating time period to form memory;
based on the big data
When the environment temperature is in a certain range of the average environment temperature K/L, firstly judging the current time point;
analyzing whether the heating and hot water requirements exist in the recent time period according to the judged time point;
when heating and hot water making requirements coexist, preferentially judging whether the indoor temperature is in the internal machine set temperature range [ A, B ], and preferentially heating if the indoor temperature is not in the range;
if the indoor temperature is within the range, comparing the heating and hot water making power values at the time point by combining with the heat supply and hot water supply time suggestions;
comparison ofi、xEjValue when Di＞xEjWhen the water is needed, hot water is preferentially produced; when D is presenti＜xEjWhen the heat is generated, the heat is preferentially generated; when D is presenti＝xEjWhen it is determined that the time point is Fi、HjAnd determining the priority of heating and water heating according to the relative position.
Wherein n is a proportionality coefficient
5) When the user has a clearly defined heating and water heating requirement, the user's clearly defined function is the priority.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure. The foregoing is only a preferred embodiment of the present disclosure, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present disclosure, and these modifications and variations should also be regarded as the protection scope of the present disclosure.
Claims (8)
1. A heat pump unit, its characterized in that: the method comprises the following steps:
compressor (1), outdoor heat exchanger (2), interior machine (3) and water tank (4), still include:
the detection unit is used for collecting the use habits of a user in a certain period after the unit is started for the first time, and comprises at least one of data of detecting the ambient temperature T, the heating starting time X, the heating stopping time Y, the water using starting time A, the water using stopping time B, the heating power D and the water heating power E;
a control unit for drawing a short heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve;
the control unit is also used for drawing a recent water consumption curve according to time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity EjJ represents the jth time period, and gives hot water supply time suggestions according to the accurate water use distribution curve;
the detection unit is also used for detecting that the indoor temperature is in the heating demand temperature range (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judgment unit for judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control unit, when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
2. The heat pump unit of claim 1, wherein:
the detection unit is also used for detecting the indoor temperature when the heating and hot water making requirements coexist;
the judging unit is used for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
the control unit is also used for controlling the heat pump unit to start heating or increase the heating quantity when the indoor temperature is not within the heating demand temperature range (A ℃, B ℃), and to close the heating water or maintain the existing state of the heating water unchanged, wherein A is the lower limit of the heating demand temperature, and B is the upper limit of the heating demand temperature.
3. A heat pump unit according to claim 1 or 2, characterised in that:
the judgment unit is used for judging whether the D is thei＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control unit is used for judging whether the current time point is relative to HjAnd is closer to FiControlling the heat pump unit to start heating or increase the heating quantity, and closing the heating water or keeping the existing state of the heating water unchanged; if the current time point is relative to FiAnd is closer to HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
4. A heat pump unit according to claim 2, characterised in that:
the detection unit is also used for detecting and obtaining the average indoor environment temperature L in the recent heating time period and the average indoor environment temperature K in the recent water consumption time period before the actions of heating, making hot water and detecting the indoor temperature;
the judging unit is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating and hot water at the same time according to the determined time point, wherein b is a constant.
5. A method for controlling a heat pump unit according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
the method comprises the following steps of detecting, after a unit is started for the first time, collecting user use habits in a certain period, wherein the user use habits comprise at least one of data of detecting environmental temperature T, heating starting time X, heating stopping time Y, water using starting time A, water using stopping time B, heating power D and water heating power E;
a control step for drawing a recent heating time curve according to the indoor temperature and the threshold value thereof, eliminating useless or short time periods and obtaining accurate heating time period distribution Fi(i-1, 2,3, …, n) and corresponding heating power value DiWherein i represents the ith time period, and a heating time suggestion is given according to an accurate heating time distribution curve;
the control step is also used for drawing a recent water consumption curve according to the time change, eliminating useless time periods or time periods with lower unit power and less water consumption, and obtaining accurate water consumption time period distribution Hj(j ═ 1,2,3, …, n) and corresponding hot water production capacity EjJ represents the jth time period, and gives hot water supply time suggestions according to the accurate water use distribution curve;
the detection step is also used for detecting that the indoor temperature is in the heating demand temperature range of (A ℃, B DEG C)]Internal time, detect current DiAnd Ej；
A judging step of judging DiAnd xEjThe magnitude relationship between the two, wherein x is a proportionality coefficient;
the control step is carried out when Di＜xEjWhen the heat pump unit is controlled to start heating or increase the heating quantity, the heating water is closed or the existing state of the heating water is kept unchanged; when D is presenti＞xEjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
6. The heat pump unit control method according to claim 5, characterized in that:
the detection step is also used for detecting the indoor temperature when the heating and hot water making requirements coexist;
a judging step for judging whether the indoor temperature is within the heating demand temperature range (A ℃, B ℃);
and the control step is also used for controlling the heat pump unit to start heating or increase the heating quantity and close the heating water or maintain the existing state of the heating water unchanged when the indoor temperature is not within the heating requirement temperature range (A ℃, B ℃), wherein A is the lower limit of the heating requirement temperature, and B is the upper limit of the heating requirement temperature.
7. The control method of the heat pump unit according to claim 5 or 6, characterized in that:
the judging step is carried out when Di＝xEjThen, the current time point is judged to be FiAnd HjRelative position of (a);
the control step is that if the current time point is relative to HjAnd is closer to FiControlling the heat pump unit to start heating or increase the heating quantity, and closing the heating water or keeping the existing state of the heating water unchanged; if the current time point is relative to FiAnd is closer to HjAnd controlling the heat pump unit to start heating water or increase the heating water quantity, and closing heating or keeping the heating existing state unchanged.
8. The heat pump unit control method according to claim 6, characterized in that:
the detection step is also used for detecting and obtaining the average indoor environment temperature L in the recent heating time period and the average indoor environment temperature K in the recent water consumption time period before the actions of heating, coexistence of the heating water requirements and detection of the indoor temperature;
the judging step is also used for judging whether the current indoor environment temperature is [ K/L-b, K/L + b ] or not, and when the current indoor environment temperature is [ K/L-b, K/L + b ]; the current time point is determined, and it is determined whether there is a demand for heating and hot water at the same time according to the determined time point, wherein b is a constant.
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| CN202110144870.6A CN112944429B (en) | 2021-02-02 | 2021-02-02 | Heat pump unit and control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0138568A2 (en) * | 1983-10-11 | 1985-04-24 | Cantherm Heating Ltd | Heat pump system |
| EP2799784A2 (en) * | 2013-04-25 | 2014-11-05 | Panasonic Corporation | Heat pump system control device, heat pump system, and heat pump system control method |
| CN104390360A (en) * | 2014-10-29 | 2015-03-04 | 广东万家乐燃气具有限公司 | Big data-based control method for intelligent multi-energy hot water system |
| CN111197787A (en) * | 2020-02-27 | 2020-05-26 | 北京中外建建筑设计有限公司 | Energy storage type heat pump coupling system and heat supply adjusting method thereof |
| CN111426067A (en) * | 2020-04-30 | 2020-07-17 | 珠海格力电器股份有限公司 | Hot water supply system and control method thereof |
-
2021
- 2021-02-02 CN CN202110144870.6A patent/CN112944429B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0138568A2 (en) * | 1983-10-11 | 1985-04-24 | Cantherm Heating Ltd | Heat pump system |
| EP2799784A2 (en) * | 2013-04-25 | 2014-11-05 | Panasonic Corporation | Heat pump system control device, heat pump system, and heat pump system control method |
| CN104390360A (en) * | 2014-10-29 | 2015-03-04 | 广东万家乐燃气具有限公司 | Big data-based control method for intelligent multi-energy hot water system |
| CN111197787A (en) * | 2020-02-27 | 2020-05-26 | 北京中外建建筑设计有限公司 | Energy storage type heat pump coupling system and heat supply adjusting method thereof |
| CN111426067A (en) * | 2020-04-30 | 2020-07-17 | 珠海格力电器股份有限公司 | Hot water supply system and control method thereof |
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