CN110779171B - Air source heat pump unit control method, electronic equipment and computer readable storage medium - Google Patents
Air source heat pump unit control method, electronic equipment and computer readable storage medium Download PDFInfo
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- CN110779171B CN110779171B CN201911052315.XA CN201911052315A CN110779171B CN 110779171 B CN110779171 B CN 110779171B CN 201911052315 A CN201911052315 A CN 201911052315A CN 110779171 B CN110779171 B CN 110779171B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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- Air Conditioning Control Device (AREA)
Abstract
The invention relates to a control method of an air source heat pump unit, electronic equipment and a computer readable storage medium, which are used for accurately knowing real-time heating/cooling capacity in the unit for feedback, facilitating after-sales service personnel to carry out troubleshooting and realizing quick maintenance, wherein the method comprises the following steps executed in sequence: a real-time heating/cooling Q monitoring step for monitoring the actual water temperature T of the unit1At the actual water temperature T1Below target water temperature T2Under the state of (1), calculating the real-time heating/cooling capacity Q of the unit; a warning step for warning the real-time heating/cooling capacity Q and the standard heating/cooling capacity Q1And triggering the unit to send different types of warnings.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a control method of an air source heat pump unit, electronic equipment and a computer readable storage medium.
Background
In the operation process of the air source heat pump, in order to ensure the heating of a room, the heating capacity of a unit of the air source heat pump can meet the heat load requirement of the room, however, the structure of the existing air source heat pump is shown in figure 1 and only comprises a compressor 1, a four-way valve 2, a fan 3, an outdoor side refrigerant-air heat exchanger 4, an outdoor temperature sensor 5, an electronic expansion valve 6, a liquid accumulator 7, a water-refrigerant heat exchanger 8 and a gas-liquid separator 9, the structure does not have the capability of accurately acquiring real-time heating/cooling capacity, once the indoor temperature is too low/high, the unit only blindly increases the heating/cooling according to temperature feedback, on one hand, the power consumption is increased, on the other hand, after-sales service personnel can not judge whether the indoor temperature is too low/high due to the insufficient heating/cooling capacity of the unit or the heat and the cold load of the room, causing much invariance to the maintenance work.
Disclosure of Invention
The invention provides a control method of an air source heat pump unit, aiming at overcoming the defects in the prior art, and the control method can accurately acquire real-time heating/cooling capacity in the unit for feedback, is convenient for after-sales service personnel to carry out troubleshooting and realizes quick maintenance.
Therefore, the control method of the air source heat pump unit comprises the following steps of sequentially executing:
a real-time heating/cooling capacity Q monitoring step, which is used for monitoring the actual water temperature T1 of the unit and calculating the real-time heating/cooling capacity Q of the unit under the condition that the actual water temperature T1 is lower than the target water temperature T2;
and a warning step, which is used for triggering the unit to send different types of warnings according to the comparison result of the real-time heating/cooling capacity Q and the standard heating/cooling capacity Q1.
Further, the calculation method of the real-time heating/cooling capacity Q specifically includes:
and monitoring the water flow Q of the unit, acquiring the difference between the actual water temperature T1 and the target water temperature T2, and representing the real-time heating/cooling capacity Q by the product of the water flow Q and the difference.
Further, the calculation method of the real-time heating/cooling capacity Q further includes: and determining the heat transfer coefficient of the heat transfer medium in the unit to correct the real-time heating/cooling capacity Q.
Further, the warning step further includes: the fleet operation is not stopped when a warning is triggered.
Further, the warning step further includes:
if the heating/cooling capacity Q is less than or equal to 0.8 × standard heating/cooling capacity Q1, the unit reports a warning of insufficient heating/cooling capacity; and/or
If the heating/cooling capacity Q is more than 0.8 and the standard heating/cooling capacity Q1, the unit reports the warning of the overload of the room.
Further, the method also comprises a preprocessing step which is executed before the real-time heating/cooling capacity Q monitoring step and is used for comparing the water flow Q with a preset water flow lower limit Q1 and an upper limit Q2 and selectively executing the real-time heating/cooling capacity Q monitoring step according to the water flow comparison result.
Further, the preprocessing step further comprises:
and executing the real-time heating/cooling capacity Q monitoring step only when the water flow Q is not less than the preset water flow lower limit Q1 and not more than the preset water flow upper limit Q2.
Further, the preprocessing step further comprises:
if the water flow q is less than a preset water flow lower limit q1, the unit reports a warning of too low water flow and stops running; and/or
If the water flow q is larger than the preset water flow upper limit q2, the unit only reports the warning of the overhigh water flow but does not stop running.
There is also provided an electronic device, wherein the electronic device comprises:
a controller; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the controller to perform the method described above.
A computer-readable storage medium is also provided, wherein the computer-readable storage medium stores one or more programs which, when executed by a controller, implement the above-described method.
Has the advantages that:
1. the target type flow switch for the existing air source heat pump unit can only judge whether the water flow of a water system is lower than a minimum limit value, cannot read the accurate value of the water flow of the water system, cannot position whether the noise is too large and the heating/cooling capacity is reduced due to the too large water flow, and the like, and meanwhile provides a basis for the model selection of the water pump and the water pipeline;
2. the problem that whether the room temperature is too low or high due to insufficient heating/cooling capacity of the unit or overlarge room heating/cooling load is difficult to distinguish is solved, and the problem is convenient for after-sales service personnel to perform accurate troubleshooting and realize quick maintenance.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structural diagram of an air source heat pump in the prior art;
FIG. 2 shows a schematic diagram of the structure of the air source heat pump of the present invention;
FIG. 3 is a flowchart illustrating the control method of the air source heat pump unit according to the present invention;
FIG. 4 shows a schematic structural diagram of an electronic device of the present invention;
fig. 5 shows a schematic structural diagram of a computer-readable storage medium of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 2, the structural scheme of this example is to add an outlet water temperature sensor 10 and a water flow meter 11 on an outlet water pipe of a water-refrigerant heat exchanger 8, and add an inlet water temperature sensor 12 and a circulating water pump 13 on an inlet water pipe of the water-refrigerant heat exchanger 8, based on the above structure, to implement the following air source heat pump unit control method, specifically referring to fig. 3, including the following steps executed in sequence:
s101, starting a circulating water pump, and reading an electric signal sent by a water flow meter through a unit controller when water flow is stable after the water pump is started for 60s to obtain water flow q in a loop;
s102, water flow q and a preset water flow lower limit q are compared1And upper limit q2In comparison with the above-mentioned results,
if the water flow q is less than the preset water flow lower limit q1Lasting 5s, the unit warns of the fault, and the water pump and the unit stop runningThe water flow protector can prevent the whole machine from being damaged and realize the protection of too low water flow;
if the water flow q is larger than the preset water flow upper limit q2If the time lasts for 5s, the unit only reports a warning, but the water pump and the unit do not stop running, so that heating/cooling is continued;
if the water flow lower limit q is preset1The water flow q is not less than the preset water flow upper limit q2If the water circulation operation of the unit is normal, the following step S103 is executed, so that the heating/cooling capacity control is further realized;
s103, collecting the actual water temperature T when the heating capacity tends to be stable after the unit is started for 30min1Wherein the actual water temperature T1The temperature of inlet water or outlet water can be used for representation and is collected by an inlet water temperature sensor or an outlet water temperature sensor;
s104, measuring the actual water temperature T1And setting the target water temperature T2Comparing, if the target water temperature T is set2Less than or equal to the actual water temperature T1+1, considering that the heating capacity is normal, otherwise, executing the step 105 to detect the real-time heating/cooling capacity Q of the unit;
s105, judging the operation mode of the unit, executing a step 106 if the unit operates in a heating mode, and skipping to execute a step 108 if the unit operates in a cooling mode;
s106. in the heating mode, by the formula Q = 1.167Q (T)2-T1) Obtaining the real-time heating quantity Q of the unit, wherein 1.167 is the heat transfer coefficient of the heat transfer medium (water) in the heating mode, and the existing heat quantity formula is utilized
Calculating, which is not described herein;
s107, acquiring standard heating quantity Q1Wherein Q is1In order to determine a theoretical value according to the outdoor ambient temperature and the water temperature,
if the set target water temperature T is met2Not less than the actual water temperature T1+1 lasts for 10min and Q is less than or equal to 0.8X Q1If the temperature of the air is low, the unit reports a warning of insufficient heating capacity, but the unit does not stop running to continue heating;
if the set target water temperature of the unit is not less than the actual water temperature T1+1 for 10min and Q > 0.8 × Q1The unit gives a warning of the overload of the room, and likewise, the unit does not stop running to continue heating.
S108. in cooling mode, by formula Q = 1.163Q (T)1-T2) Obtaining real-time refrigerating capacity Q of the unit, wherein 1.163 is the heat transfer coefficient of a heat transfer medium (water) in a refrigerating mode;
s109, acquiring standard refrigerating capacity Q1Wherein Q is1In order to determine a theoretical value according to the outdoor ambient temperature and the water temperature,
if the set target water temperature T of the unit is met2Less than or equal to the actual water temperature T1+1 lasts for 10min and Q is less than or equal to 0.8X Q1If the refrigerating capacity of the unit is insufficient, the unit gives a warning of insufficient refrigerating capacity, but the unit does not stop running to continue cooling;
if the set target water temperature of the unit is not less than the actual water temperature T1+1 for 10min and Q > 0.8 × Q1The unit gives a warning of the overload of the room, and similarly, the unit does not stop running.
After the user observes the warning, can choose by oneself to stop the unit operation or inform the maintenance, after-sales service personnel also can be according to warning direct positioning problem place, realize convenient maintenance.
Compared with the existing air source heat pump, the method of the embodiment can realize the following beneficial effects:
1. the target type flow switch for the existing air source heat pump unit can only judge whether the water flow of a water system is lower than a minimum limit value, cannot read the accurate value of the water flow of the water system, cannot position whether the noise is too large and the heating/cooling capacity is reduced due to the too large water flow, and the like, and meanwhile provides a basis for the model selection of the water pump and the water pipeline;
2. the problem that whether the room temperature is too low/high due to insufficient heating/cooling capacity of the unit or too large room heating/cooling load is difficult to distinguish is solved, and the problem that after-sales service personnel can conveniently perform accurate troubleshooting and realize quick maintenance is solved.
It should be noted that:
the method of the present embodiment may be implemented by a method that is converted into program steps and apparatuses that can be stored in a computer storage medium and invoked and executed by a controller.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose devices may be used with the teachings herein. The required structure for constructing such a device will be apparent from the description above. Moreover, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best mode of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It will be appreciated by those skilled in the art that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functions of some or all of the components of the apparatus for detecting a wearing state of an electronic device according to embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
For example, fig. 4 shows a schematic structural diagram of an electronic device according to an embodiment of the invention. The electronic device conventionally comprises a processor 41 and a memory 42 arranged to store computer executable instructions (program code). The memory 42 may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory 42 has a storage space 43 storing program code 64 for performing any of the method steps in the embodiments. For example, the storage space 43 for the program code may comprise respective program codes 44 for respectively implementing the various steps in the above method. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. Such a computer program product is typically a computer readable storage medium such as described in fig. 5. The computer readable storage medium may have memory segments, memory spaces, etc. arranged similarly to the memory 42 in the electronic device of fig. 4. The program code may be compressed, for example, in a suitable form. In general, the memory unit stores program code 51 for performing the steps of the method according to the invention, i.e. program code readable by a processor such as 41, which when run by an electronic device causes the electronic device to perform the individual steps of the method described above.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (7)
1. The control method of the air source heat pump unit is characterized by comprising the following steps of sequentially executing:
a real-time heating/cooling Q monitoring step for monitoring the actual water temperature T of the unit1At the actual water temperature T1Below target water temperature T2Actual water temperature T1Above target water temperature T2Under the state of (1), calculating the real-time heating/cooling capacity Q of the unit;
a warning step for warning the real-time heating/cooling capacity Q and the standard heating/cooling capacity Q1Triggering the unit to send different types of warnings, and further reporting a warning of insufficient heating/cooling capacity by the unit if the heating/cooling capacity Q is less than or equal to 0.8 × standard heating/cooling capacity Q1; and/or if the heating/cooling capacity Q is more than 0.8 and the standard heating/cooling capacity Q1, the unit reports a warning of the overload of the room;
the method also comprises a preprocessing step executed before the real-time heating/cooling capacity Q monitoring step, wherein the preprocessing step is used for comparing the water flow Q with a preset water flow lower limit Q1 and a preset water flow upper limit Q2 and selectively executing the real-time heating/cooling capacity Q monitoring step according to a water flow comparison result;
the preprocessing step comprises the step of monitoring the heating/cooling capacity Q in real time only when the water flow Q is not less than the preset water flow lower limit Q1 and not more than the preset water flow upper limit Q2.
2. The method according to claim 1, wherein the calculation of the real-time heating/cooling capacity Q specifically comprises:
monitoring the water flow q of the unit to obtain the actual water temperature T1With target water temperature T2And characterizing the real-time heating/cooling capacity Q by the product of the water flow rate Q and the difference.
3. The method of claim 2, wherein the computing of the real-time heating/cooling Q further comprises: and determining the heat transfer coefficient of the heat transfer medium in the unit to correct the real-time heating/cooling capacity Q.
4. The method of claim 1, wherein the step of alerting further comprises: the fleet operation is not stopped when a warning is triggered.
5. The method of claim 1, wherein the pre-processing step further comprises:
if the water flow q is less than the preset water flow lower limit q1If the water flow is too low, the unit reports a warning of too low water flow and stops running; and/or
If the water flow q is larger than the preset water flow upper limit q2The unit only reports a warning of high water flow but does not stop running.
6. An electronic device, wherein the electronic device comprises:
a controller; and the number of the first and second groups,
a memory arranged to store computer executable instructions that, when executed, cause the controller to perform a method according to any one of claims 1 to 5.
7. A computer readable storage medium, wherein the computer readable storage medium stores one or more programs which, when executed by a controller, implement the method of any of claims 1-5.
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