CN109163416B - Defrosting control method and device of equipment and equipment - Google Patents
Defrosting control method and device of equipment and equipment Download PDFInfo
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- CN109163416B CN109163416B CN201810918503.5A CN201810918503A CN109163416B CN 109163416 B CN109163416 B CN 109163416B CN 201810918503 A CN201810918503 A CN 201810918503A CN 109163416 B CN109163416 B CN 109163416B
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- heating
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
Abstract
The invention provides a defrosting control method, a defrosting control device and equipment, wherein the method comprises the following steps: acquiring a first variation of the heating capacity of the equipment; comparing the first variation with a preset second variation; and determining whether the equipment enters a defrosting mode according to the comparison result. The invention solves the problem that the method for judging the entering of defrosting in the related technology easily causes the air conditioning equipment to enter the defrosting mode too early or too late, and improves the performance of the heating operation of the equipment.
Description
Technical Field
The invention relates to the field of intelligent equipment, in particular to a control device and a control device method of equipment and equipment.
Background
In the heat pump product, when frosting occurs in the heating operation, the refrigerating mode needs to be switched to, so that the high-temperature refrigerant discharged by the compressor flows through the outdoor heat exchanger to melt the frost layer. The related technologies are related to methods for judging entering defrosting, namely entering defrosting at regular time, judging the temperature condition of a defrosting pipe after running for a period of time, judging entering defrosting according to the last defrosting time, and the like, and the methods only carry out fuzzy judgment on the thickness of the defrosting layer, do not accurately know the actual attenuation condition of heating quantity at the using side, are easy to enter defrosting too early or too late, have poor comprehensive performance of unit running, and influence the comfort experience of users.
There is currently no effective solution to the above-described problems in the related art.
Disclosure of Invention
The embodiment of the invention provides a control device method, a control device and a control device for equipment, which at least solve the problem that the method for judging the entering of defrosting in the related technology is easy to cause the air conditioning equipment to enter a defrosting mode too early or too late.
According to an aspect of the embodiment of the present invention, there is provided a defrosting control method of an apparatus, including: acquiring a first variation of the heating capacity of the equipment; comparing the first variation with a preset second variation; and determining whether the equipment enters a defrosting mode according to the comparison result.
According to another aspect of the present invention, there is provided a control apparatus of a device, comprising: the acquisition module is used for acquiring a first variation of the heating quantity of the equipment; the comparison module is used for comparing the first variation with a preset second variation; and the determining module is used for determining whether the equipment enters a defrosting mode according to the comparison result.
According to another aspect of the present invention there is provided an apparatus comprising a control device of the apparatus described above.
According to another aspect of the present invention, there is provided a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing a defrosting control method of the device as described above when executing the program.
According to a further aspect of the present invention there is provided a storage medium containing computer executable instructions which, when executed by a computer processor, are used to perform a defrosting control method of an apparatus as described above.
According to the invention, the first variable quantity of the heating quantity of the equipment is compared with the preset second variable quantity, and whether the equipment enters a defrosting mode is determined according to a comparison result; that is, whether to enter a defrosting mode is determined according to the change of heating quantity, so that the problem that the defrosting mode is easily entered too early or too late by an air conditioning device is solved by judging that the defrosting mode is entered in the related art, and the heating operation performance of the device is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a flow chart of a method of controlling defrosting of an apparatus according to an embodiment of the invention;
fig. 2 is a schematic structural view of an air conditioner according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a change in heating capacity according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of inlet and outlet water temperature differentials in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural view of a control device of an apparatus according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
Example 1
The invention provides a defrosting control method of equipment, and fig. 1 is a flow chart of the defrosting control method of equipment according to an embodiment of the invention, and as shown in fig. 1, the method comprises the following steps:
step S102, acquiring a first variation of the heating capacity of equipment;
step S104, comparing the first variation with a preset second variation;
step S106, determining whether the equipment enters a defrosting mode according to the comparison result.
Comparing the first variation of the heating capacity of the equipment with a preset second variation through the steps S102 to S106, and determining whether the equipment enters a defrosting mode according to the comparison result; that is, whether to enter a defrosting mode is determined according to the change of heating quantity, so that the problem that the defrosting mode is easily entered too early or too late by an air conditioning device is solved by judging that the defrosting mode is entered in the related art, and the heating operation performance of the device is improved.
The apparatus according to the present embodiment is a heat pump apparatus, preferably an air conditioner.
In an alternative implementation manner of this embodiment, as for the manner of acquiring the first variation amount of the heating amount of the apparatus in the above-mentioned step S102, there are two alternative implementations:
the first way comprises:
step S102-1, acquiring real-time temperature difference of water entering and exiting from the equipment, specific heat capacity of water flowing through the equipment and mass flow of water;
step S102-2, obtaining real-time heating quantity according to the real-time temperature difference, the specific heat capacity and the mass flow;
in step S102-3, a first variation of the heating capacity in a preset time is obtained based on the real-time mass heat.
For the above steps S102-1 to S102-3, in a specific application scenario, taking an air conditioner as an example, parameters acquired by a water inlet thermal bulb, a water outlet thermal bulb and a flowmeter of the air conditioner are used to calculate and obtain the real-time heating quantity Q (corresponding to the first variation quantity) of the unit, q=c×m' × (t Effluent water -t Inflow of water ) Wherein c is the specific heat capacity of water, m' is the mass flow of water measured by the flow meter, t Effluent water ,t Inflow of water The temperature is detected by the water outlet temperature sensing bulb and the water inlet temperature sensing bulb respectively, wherein (t) Effluent water -t Inflow of water ) Calculating a change k= (Q) in heating amount before and after the real-time temperature difference every m minutes (corresponding to the preset time period) n+m -Q n ) And/m. It should be noted that, the preset time m may be adjusted and set according to the actual situation.
The second way comprises: step S102-4, acquiring the real-time temperature difference of water inlet and outlet of the equipment, and taking the real-time temperature difference as a first variation of heating capacity.
In this way, the method is preferably applied to the case that the constant-frequency water pump is adopted for the equipment, the flow is stable, and the change of the water temperature difference is equivalent to the change of the heating quantity.
As for the manner of determining whether the device enters the defrosting mode according to the comparison result in step S106 involved in the present embodiment, this may be achieved as follows:
step S106-1, determining that the equipment maintains heating operation under the condition that the first variation is larger than the second variation;
step S106-2, determining that the equipment enters a defrosting mode under the condition that the first variation is smaller than the second variation;
step S106-3, comparing the first temperature of the defrosting pipe of the equipment with a preset second temperature under the condition that the first variation is equal to the second variation, and determining whether the equipment enters a defrosting mode according to the comparison result of the first temperature and the second temperature.
Wherein, the determining whether the equipment enters the defrosting mode according to the comparison result of the first temperature and the second temperature comprises: determining that the equipment enters a defrosting mode under the condition that the first temperature is smaller than the second temperature; in the case where the first temperature is equal to or greater than the second temperature, it is determined that the apparatus maintains the heating operation.
The invention is illustrated below in conjunction with specific alternative implementations of the present examples;
fig. 2 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention, and in combination with fig. 2, the embodiment of the present alternative embodiment includes:
a first mode of the step S102 is described;
the real-time heating quantity Q, Q=c×m' × (t) of the unit is calculated by the parameters acquired by the water inlet temperature sensing bulb, the water outlet temperature sensing bulb and the flowmeter of the equipment Effluent water -t Inflow of water ) Wherein c is the specific heat capacity of water, m' is the mass flow of water measured by the flow meter, t Effluent water ,t Inflow of water The temperature is detected by the water outlet temperature sensing bulb and the water inlet temperature sensing bulb respectively. Fig. 3 is a schematic diagram showing the change in heating amount according to an embodiment of the present invention, and as shown in fig. 3, the change k= (Q) in heating amount before and after each m minutes is calculated n+m -Q n )/m。
Integrate k and preset k 0 ,t Defrosting agent And preset t 0 Judge the defrosting entry cases as follows table 1:
| k 0 ＞k | k＝k 0 | k＞k 0 | |
| t 0 ＞t | entering defrosting | Entering defrosting | Maintaining heating |
| t＝t 0 | Entering defrosting | Maintaining heating | Maintaining heating |
| t＞t 0 | Entering defrosting | Maintaining heating | Maintaining heating |
TABLE 1
Wherein k is 0 Judging that the heating quantity is greatly attenuated if the temperature of the defrosting pipe reaches a preset temperature, and entering defrosting at the moment;
k＝k 0 if t 0 Judging that the frost layer is thicker, wherein the heating quantity is attenuated generally, and defrosting; if t=t 0 Judging that the frost layer is general, but the heating quantity is not greatly attenuated, and maintaining the heating operation; if t > t 0 Judging that the frost layer is thinner, and the heating quantity is not greatly attenuated, and maintaining the heating operation;
k＞k 0 judging that the heating quantity is declinedAnd the temperature of the defrosting pipe is not reduced greatly, and the heating operation is maintained no matter whether the temperature of the defrosting pipe reaches the preset temperature or not.
A second mode of S102 in the above embodiment is explained;
if the water flow meter is not equipped, the calculation of the heating capacity of the water side is difficult, if the unit adopts the fixed-frequency water pump, the flow is stable, the change of the temperature difference between the water inlet and the water outlet can be equivalent to the change of the heating capacity, fig. 4 is a schematic diagram of the temperature difference between the water inlet and the water outlet according to the embodiment of the invention, and the control scheme is correspondingly changed as shown in the following table 2:
| Δt k ＞Δt | Δt＝Δt k | Δt＞Δt k | |
| t 0 ＞t | entering defrosting | Entering defrosting | Maintaining heating |
| t＝t 0 | Entering defrosting | Maintaining heating | Maintaining heating |
| t＞t 0 | Entering defrosting | Maintaining heating | Maintaining heating |
TABLE 2
Wherein Δt is k Judging that the heating quantity is greatly attenuated if the temperature of the defrosting pipe reaches more than deltat, and entering defrosting no matter whether the temperature of the defrosting pipe reaches the preset temperature or not;
Δt＝Δt k if t 0 Judging that the frost layer is thicker, wherein the heating quantity is attenuated generally, and defrosting; if t=t 0 Judging that the frost layer is general, but the heating quantity is not greatly attenuated, and maintaining the heating operation; if t > t 0 Judging that the frost layer is thinner, and the heating quantity is not greatly attenuated, and maintaining the heating operation;
Δt＞Δt k and judging that the heating quantity is not greatly attenuated, and maintaining the heating operation no matter whether the temperature of the defrosting pipe reaches the preset temperature or not.
In an alternative implementation manner of the present embodiment, the present embodiment further provides a computer device, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, where the processor implements a defrosting control method of the device as described above when executing the program.
In an alternative implementation of the present embodiment, the present embodiment further provides a storage medium containing computer-executable instructions, which when executed by a computer processor, are used to perform the defrosting control method of the above device.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising several instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the various embodiments of the present invention.
Example 2
The embodiment also provides a device control apparatus, which is used to implement the foregoing embodiments and preferred embodiments, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
Fig. 5 is a schematic structural view of a control device of an apparatus according to an embodiment of the present invention, as shown in fig. 5, the device including: an acquisition module 52, configured to acquire a first variation amount of a heating amount of the apparatus; the comparison module 54 is coupled to the acquisition module 52, and is configured to compare the first variation with a preset second variation; a determining module 56 is coupled to the comparing module 54 for determining whether the device enters a defrost mode based on the comparison.
Optionally, the acquiring module 52 in this embodiment includes: the first acquisition unit is used for acquiring the real-time temperature difference of water entering and exiting the equipment, the specific heat capacity of water flowing through the equipment and the mass flow of water; the processing unit is used for obtaining real-time heating quantity according to the real-time temperature difference, the specific heat capacity and the mass flow; and the second acquisition unit is used for acquiring the first variation of the heating quantity in the preset time based on the real-time quality heat. Alternatively, the acquisition module 52 in the present embodiment further includes: and the third acquisition unit is used for acquiring the real-time temperature difference of the water inlet and outlet of the equipment and taking the real-time temperature difference as the first variation of the heating quantity.
Based on the above-described acquisition module 52, the determination module 56 in the present embodiment includes: a first determining unit configured to determine that the apparatus maintains a heating operation in a case where the first variation is larger than the second variation; a second determining unit configured to determine that the apparatus enters a defrosting mode, in a case where the first variation is smaller than the second variation; a third determining unit, configured to compare a first temperature of a defrosting pipe of the device with a preset second temperature if the first variation is equal to the second variation, and determine whether the device enters a defrosting mode according to a comparison result of the first temperature and the second temperature; wherein the third determining unit includes: a first determining subunit, configured to determine that the device enters a defrosting mode when the first temperature is less than the second temperature; and a second determining subunit for determining that the apparatus maintains the heating operation in the case where the first temperature is equal to or greater than the second temperature.
It should be noted that each of the above modules may be implemented by software or hardware, and for the latter, it may be implemented by, but not limited to: the modules are all located in the same processor; alternatively, the modules are located in a plurality of processors, respectively.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A defrosting control method of an apparatus, characterized by comprising:
acquiring a first variation of the heating capacity of the equipment;
comparing the first variation with a preset second variation;
determining whether the equipment enters a defrosting mode according to the comparison result;
under the condition that the first variation is equal to the second variation, comparing a first temperature of a defrosting pipe of the equipment with a preset second temperature, and determining whether the equipment enters a defrosting mode according to a comparison result of the first temperature and the second temperature;
the determining whether the equipment enters a defrosting mode according to the comparison result of the first temperature and the second temperature comprises:
determining that the device enters a defrosting mode if the first temperature is less than the second temperature;
and determining that the equipment maintains heating operation under the condition that the first temperature is equal to or greater than the second temperature.
2. The method of claim 1, wherein the obtaining a first amount of change in the amount of heating of the apparatus comprises:
acquiring the real-time temperature difference of water entering and exiting the equipment, the specific heat capacity of water flowing through the equipment and the mass flow of water;
obtaining real-time heating quantity according to the real-time temperature difference, the specific heat capacity and the mass flow;
and acquiring the first variation of the heating capacity in the preset time based on the real-time heating capacity.
3. The method of claim 1, wherein the obtaining a first amount of change in the amount of heating of the apparatus comprises:
and acquiring a real-time temperature difference of water inlet and outlet of the equipment, and taking the real-time temperature difference as the first variation of heating capacity.
4. A method according to any one of claims 1 to 3, wherein said determining whether the device enters a defrost mode based on the comparison result comprises:
determining that the equipment maintains heating operation under the condition that the first variation is larger than the second variation;
and determining that the equipment enters a defrosting mode under the condition that the first variation is smaller than the second variation.
5. A control device of an apparatus, characterized by comprising:
the acquisition module is used for acquiring a first variation of the heating quantity of the equipment;
the comparison module is used for comparing the first variation with a preset second variation;
the determining module is used for determining whether the equipment enters a defrosting mode according to the comparison result;
the determining module includes: a third determining unit, configured to compare a first temperature of a defrosting pipe of the device with a preset second temperature when the first variation is equal to the second variation, and determine whether the device enters a defrosting mode according to a comparison result of the first temperature and the second temperature;
the third determination unit includes: a first determining subunit configured to determine that the apparatus enters a defrosting mode if the first temperature is less than the second temperature; and the second determination subunit is used for determining that the equipment maintains heating operation under the condition that the first temperature is equal to or greater than the second temperature.
6. The apparatus of claim 5, wherein the acquisition module comprises:
the first acquisition unit is used for acquiring the real-time temperature difference of water entering and exiting the equipment, the specific heat capacity of water flowing through the equipment and the mass flow of water;
the processing unit is used for obtaining real-time heating quantity according to the real-time temperature difference, the specific heat capacity and the mass flow;
and the second acquisition unit is used for acquiring the first variation of the heating quantity in the preset time based on the real-time heating quantity.
7. The apparatus of claim 5, wherein the acquisition module further comprises:
and the third acquisition unit is used for acquiring the real-time temperature difference of water inlet and outlet of the equipment and taking the real-time temperature difference as the first variation of heating capacity.
8. The apparatus of any one of claims 5 to 7, wherein the determining module comprises:
a first determining unit configured to determine that the apparatus maintains a heating operation in a case where the first variation is larger than the second variation;
and the second determining unit is used for determining that the equipment enters a defrosting mode under the condition that the first variation is smaller than the second variation.
9. An apparatus comprising the control device of any one of claims 5 to 8.
10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of controlling defrosting of a device as claimed in any one of claims 1 to 4 when executing the program.
11. A storage medium containing computer executable instructions which, when executed by a computer processor, are for performing the defrosting control method of the device of any one of claims 1-4.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109780684B (en) * | 2019-01-24 | 2022-06-24 | 青岛海尔空调电子有限公司 | Air conditioner control method and device, air conditioner and storage medium |
| CN112082248B (en) * | 2019-06-13 | 2022-09-23 | 青岛海尔空调电子有限公司 | Air conditioner and outdoor unit defrosting control method thereof |
| CN111397099B (en) * | 2020-04-15 | 2021-10-19 | 宁波奥克斯电气股份有限公司 | Defrosting control method and device, air conditioner and storage medium |
| CN113074439B (en) * | 2021-04-06 | 2022-07-26 | 珠海格力电器股份有限公司 | Defrosting control method and device and air conditioner |
| CN113541595A (en) * | 2021-06-24 | 2021-10-22 | 南京师范大学 | Geothermal and ultrasonic combined snow/ice removing device and method for photovoltaic panel |
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