CN112555977A - Frequency modulation method and device of variable frequency heat pump, computer equipment and storage medium - Google Patents
Frequency modulation method and device of variable frequency heat pump, computer equipment and storage medium Download PDFInfo
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- CN112555977A CN112555977A CN202011436217.9A CN202011436217A CN112555977A CN 112555977 A CN112555977 A CN 112555977A CN 202011436217 A CN202011436217 A CN 202011436217A CN 112555977 A CN112555977 A CN 112555977A
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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
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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
- F24D2200/00—Heat sources or energy sources
- F24D2200/12—Heat pump
- F24D2200/123—Compression type heat pumps
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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]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The embodiment of the application discloses a frequency modulation method and device of a variable frequency heat pump, computer equipment and a storage medium; the method comprises the following steps: acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the computer needs to be started; after starting up, acquiring the current outdoor temperature and acquiring the initial target high-pressure of the condenser; adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure; determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure so as to adjust the initial frequency of the compressor; the frequency of the compressor is adjusted, the heating effect is guaranteed, the high-pressure protection is prevented from being misreported by adjusting the high-pressure, and meanwhile, the unit is prevented from heating under the high-pressure, so that the heating energy efficiency is guaranteed.
Description
Technical Field
The embodiment of the application relates to the technical field of heat pumps, in particular to a frequency modulation method and device of a variable frequency heat pump, computer equipment and a storage medium.
Background
The heat pump is a device which can obtain low-level heat energy from air, water or soil in the nature and provide high-level heat energy which can be used by people through electric energy acting. At present, heat pump systems are increasingly widely applied in the heating and refrigerating field, the frequency of an existing fixed-frequency heat pump is modulated according to the difference value between target indoor temperature and actual indoor temperature, the temperature difference value is large, the frequency is operated according to high frequency, the temperature difference value is small, the frequency is operated according to low frequency, and in the application of a hysteresis system-a waterless floor heating system (taking a floor as a condenser), heat is not transmitted to the indoor through the floor, high-voltage protection is reported, so that misinformation high-voltage protection is caused, and meanwhile, heating effect is influenced.
Disclosure of Invention
The embodiment of the application provides a frequency modulation method and device of a variable frequency heat pump, computer equipment and a storage medium, and aims to solve the problems that in the prior art, the heat pump is easy to cause false alarm high-voltage protection and influence heating effect.
In a first aspect, an embodiment of the present application provides a frequency modulation method for a variable frequency heat pump, including:
acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the computer needs to be started;
after starting up, acquiring the current outdoor temperature and acquiring the initial target high-pressure of the condenser;
adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure;
and determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure so as to adjust the initial frequency of the compressor.
Further, the determining the frequency modulation operation of the compressor based on the preset rule of the compressor frequency, the current indoor temperature and the target high pressure to adjust the compressor initial frequency comprises:
when the current indoor temperature is lower than the first set temperature, determining the frequency modulation operation of the compressor according to the actual high-pressure: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, the frequency of the current compressor is kept;
when the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, the frequency of the current compressor is kept;
when the current indoor temperature is higher than the first set temperature, determining the frequency modulation operation of the compressor according to the actual high-pressure: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Further, the acquiring an initial target high pressure of the condenser includes:
and acquiring the current gear of the heat pump unit, and determining the initial target high-pressure of the condenser according to the gear.
Further, the acquiring an initial target high pressure of the condenser includes:
and acquiring the outdoor environment temperature, and determining the initial target high-pressure according to the outdoor environment temperature.
Further, said adjusting said initial target high pressure based on said current indoor temperature to update a target high pressure comprises:
if the current indoor temperature is lower than a first set temperature, increasing 1bar every set time, and updating the target high pressure until the target high pressure is equal to the highest high pressure allowed by the current gear;
if the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, maintaining the current target high-pressure;
if the current indoor temperature is higher than a first set temperature, reducing the target high-pressure by 1bar every set time, and updating the target high-pressure; wherein the depressurization is stopped when the target high-pressure is not more than the high-pressure.
Further, the acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the computer needs to be started up includes:
controlling the opening and closing of a compressor based on the difference value between the current indoor temperature and the target indoor temperature: if the difference value of the current indoor environment temperature minus the target indoor temperature is equal to the stop return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target indoor temperature is equal to the starting return difference, controlling the compressor to be started.
Further, if the difference obtained by subtracting the indoor ambient temperature from the current target temperature is equal to the startup return difference, after the compressor is controlled to be started, the method further includes:
the method comprises the steps that a compressor is started, the frequency of the compressor is adjusted in a first time period to obtain a first starting frequency according to preset starting frequency modulation operation, the frequency of the compressor is adjusted in a second time period to obtain a second starting platform frequency, and after the second time period is finished, the second starting platform frequency is used as the initial frequency of the compressor to start adjusting the frequency.
In a second aspect, an embodiment of the present application provides a frequency modulation apparatus for a variable frequency heat pump, including:
the starting-up determining module is used for acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature and determining whether starting-up is needed or not;
the parameter acquisition module is used for acquiring the current outdoor temperature after starting up and acquiring the initial target high-pressure of the condenser;
a pressure adjustment module for adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure;
and the frequency modulation determining module is used for determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high-pressure so as to adjust the initial frequency of the compressor.
Further, the frequency modulation determining module comprises a frequency modulation operation unit, and the frequency modulation operation unit is configured to determine the frequency modulation operation of the compressor according to the actual high-pressure when the current indoor temperature is lower than the first set temperature: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Further, the frequency modulation operation unit is also used for keeping the frequency of the current compressor when the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature;
further, the frequency modulation operation unit is further configured to determine a frequency modulation operation of the compressor according to the actual high-pressure when the current indoor temperature is higher than the first set temperature: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Further, the parameter obtaining module comprises a pressure obtaining unit, and the pressure obtaining unit is used for obtaining the current gear of the heat pump unit and determining the high pressure of the condenser according to the gear so as to obtain the initial target high pressure.
Further, the pressure obtaining unit is further configured to obtain an outdoor environment temperature, and determine a high pressure of the condenser according to the outdoor environment temperature to obtain an initial target high pressure.
Further, the pressure adjusting module comprises a pressure adjusting unit, and the pressure adjusting unit is used for increasing the target high-pressure by 1bar every set time to obtain the target high-pressure if the current indoor temperature is lower than a first set temperature; and stopping supercharging when the target high-pressure is equal to the highest high-pressure allowed by the current gear.
Further, the pressure adjusting unit is further configured to maintain the current target high-pressure unchanged if the current indoor temperature is not lower than a first set temperature and not higher than a second set temperature;
further, the pressure adjusting unit is further configured to reduce the target high-pressure by 1bar every set time to obtain a target high-pressure if the current indoor temperature is higher than a first set temperature; wherein the depressurization is stopped when the target high-pressure is not more than the high-pressure.
Further, the system further comprises an opening control module, wherein the opening control module is used for controlling the opening and closing of the compressor based on the difference value between the current indoor temperature and the target temperature: if the difference value of the current indoor environment temperature minus the target temperature is equal to the stop return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target temperature is equal to the starting return difference, controlling the compressor to be started.
The system further comprises an initial frequency acquisition module, wherein the initial frequency acquisition module is used for adjusting the frequency of the compressor to obtain a first starting frequency in a first time period according to a preset starting frequency modulation operation when the compressor is started, adjusting the frequency of the compressor to obtain a second starting platform frequency in a second time period, and starting to adjust the frequency by taking the second starting platform frequency as the initial frequency of the compressor after the second time period is finished.
In a third aspect, embodiments of the present application provide a computer device, including a memory and one or more processors;
the memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of frequency modulation of a variable frequency heat pump according to the first aspect.
In a fourth aspect, embodiments of the present application provide a storage medium containing computer executable instructions for performing the frequency modulation method of the variable frequency heat pump according to the first aspect when executed by a computer processor.
According to the embodiment of the application, the indoor temperature and the outdoor temperature are acquired, the high-pressure of the condenser corresponding to the current outdoor temperature is adjusted, the frequency modulation operation of the compressor is determined according to the current indoor temperature and the current high-pressure, the frequency of the compressor is adjusted, the heating effect is guaranteed, the high-pressure protection error is avoided for adjusting the high-pressure, meanwhile, the unit is prevented from heating under the high-pressure, and therefore the heating energy efficiency is guaranteed.
Drawings
Fig. 1 is a flowchart of a frequency modulation method of an inverter heat pump according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of another frequency modulation method for a variable frequency heat pump according to an embodiment of the present disclosure;
FIG. 3 is a flow chart of another frequency modulation method for a variable frequency heat pump according to an embodiment of the present disclosure;
FIG. 4 is a schematic diagram of a compressor on-off condition of a frequency modulation method of an inverter heat pump according to an embodiment of the present application;
FIG. 5 is a schematic diagram illustrating a compressor startup frequency modulation operation of a frequency modulation method of an inverter heat pump according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a frequency modulation device of an inverter heat pump according to an embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
According to the frequency modulation method of the variable frequency heat pump, the initial target high pressure of the condenser is obtained by obtaining the current outdoor temperature and the current indoor temperature, the high pressure of the condenser is adjusted according to the current outdoor temperature, the corresponding target high pressure is obtained, the frequency modulation operation of the compressor is determined according to the corresponding preset rule relation of the frequency of the compressor, the current indoor temperature and the target high pressure, and the frequency modulation of the compressor is achieved, so that the false alarm of high-pressure protection is avoided, the heating effect is guaranteed, meanwhile, the unit is prevented from heating under the higher high pressure, and the heating energy efficiency is guaranteed; at present, a fixed-frequency heat pump is adopted for heating indoors, the output of a compressor of the fixed-frequency heat pump is a fixed value, namely, the fixed frequency is adopted for working, low frequency or high frequency is controlled according to ambient temperature for working, in a hysteresis floor heating system, the heat of the fixed-frequency heat pump is easy to reach indoors through a floor, and high-pressure protection is reported, so that the working of the system is influenced, and the heating effect is influenced. Therefore, the frequency modulation method of the variable frequency heat pump is provided to avoid the problem that the work and the heating effect of the system are influenced by misinformation of high-voltage protection in the working process of the heat pump system.
The frequency modulation method of the variable frequency heat pump provided in the embodiment can be executed by a frequency modulation device of the variable frequency heat pump, and the frequency modulation device of the variable frequency heat pump can be realized in a software and/or hardware manner and is integrated in a frequency modulation device of the variable frequency heat pump. The frequency modulation device of the variable frequency heat pump can be a computer or the like.
Fig. 1 is a flowchart of a frequency modulation method of an inverter heat pump according to an embodiment of the present disclosure. Referring to fig. 1, the frequency modulation method of the variable frequency heat pump specifically includes:
and step 110, acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the computer needs to be started.
Specifically, based on the difference between the current indoor temperature and the target indoor temperature, the on/off of the compressor is controlled: if the difference value of the current indoor environment temperature minus the target indoor temperature is equal to the stop return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target indoor temperature is equal to the starting return difference, controlling the compressor to be started.
And step 120, after starting up, acquiring the current outdoor temperature and acquiring the initial target high-pressure of the condenser.
Specifically, the current outdoor temperature is obtained, wherein the current outdoor temperature may be obtained in various manners, optionally, in this embodiment, the temperature sensor is used to detect outdoor temperature data and send the outdoor temperature data to the frequency modulation device of the variable frequency heat pump, so as to obtain the outdoor temperature, it can be understood that, in the embodiment, the manner of sending the outdoor temperature data to the frequency modulation device of the variable frequency heat pump is various, and is not limited herein; specifically, an initial target high-pressure of the condenser is obtained, wherein the initial target high-pressure may be obtained in multiple manners, optionally, in this embodiment, the pressure gauge is used to detect the high-pressure of the condenser and send the high-pressure to the frequency modulation device of the variable-frequency heat pump, so as to obtain the initial high-pressure.
Specifically, the current outdoor temperature and the initial target high pressure are obtained, and optionally, the initial target high pressure is correspondingly adjusted according to the current outdoor temperature so as to obtain the target high pressure in order that the high pressure can be correspondingly set with the outdoor temperature to enhance the working effect of the system. The method for correspondingly adjusting the initial target high-pressure according to the current outdoor temperature includes multiple ways, and optionally, the current outdoor temperature is increased by 0.1 degree, and the initial target high-pressure is correspondingly increased or decreased by 1 bar.
And step 140, determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure so as to adjust the initial frequency of the compressor.
Specifically, in order to realize frequency modulation of the compressor, the frequency modulation operation of the compressor needs to be determined, and the specific frequency modulation operation of the compressor is determined based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure, that is, according to the temperature range of the current indoor temperature and the numerical range of the target high pressure; it can be understood that the frequency modulation control of the compressor is carried out by comprehensively judging the current indoor temperature and the target high-pressure, so that the heating effect is ensured, meanwhile, the misinformation high-pressure protection is not generated, and meanwhile, the unit is prevented from heating under higher high-pressure, so that the heating energy efficiency is ensured.
The above steps are not performed in the exact order in which they are described, which should be understood as an overall solution.
On the basis of the above embodiments, fig. 2 is a flowchart of another frequency modulation method for an inverter heat pump according to an embodiment of the present application. The frequency modulation method of the variable frequency heat pump is an embodiment of the frequency modulation method of the variable frequency heat pump. Referring to fig. 2, the frequency modulation method of the variable frequency heat pump includes:
Specifically, if the current indoor temperature is lower than the first set temperature, the frequency modulation operation of the compressor is further determined according to the actual high pressure in the temperature range, and it can be understood that the first set temperature may be set according to the system and the internal characteristics of the refrigerant, or may be set by inputting set data by a user. The frequency modulation operation is carried out on the compressor according to the numerical range of the actual high-pressure, and if the actual high-pressure is higher than a first set pressure, the frequency of the compressor is reduced by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, raising the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, the frequency of the current compressor is kept; optionally, the set time can be set by itself, and optionally, the set time is 60 seconds; it is understood that the first set high pressure and the second set high pressure may be set internally according to the system and the refrigerant characteristics, or may be set by inputting set data by a user.
Illustratively, a target indoor temperature is obtained, and a first set temperature is set to be the target indoor temperature minus 0.5 degrees; acquiring a target high-pressure, setting a first set high-pressure as the target high-pressure minus 0.5bar, and setting the target high-pressure as a second set high-pressure; illustratively, when the current indoor temperature is lower than the target indoor temperature minus 0.5 ℃, the numerical value of the actual high-pressure is judged, and if the actual high-pressure is higher than the target high-pressure, the compressor reduces the frequency by 2Hz at set time intervals; if the actual high-pressure is not lower than the target high-pressure and is not higher than the target high-pressure minus 0.5bar, maintaining the frequency of the current compressor; if the actual high pressure is lower than the target high pressure minus 0.5bar, the compressor is upscaled by 2Hz at set time intervals. Optionally, the set time may be set, and optionally, the set time is 60 seconds. It can be understood that there are various ways to obtain the target indoor temperature, and alternatively, the present embodiment obtains the target indoor temperature through input; it is understood that there are various ways to obtain the target high pressure, and alternatively, the present embodiment is self-configured by the system according to the internal characteristics.
And step 220, when the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, maintaining the current frequency of the compressor.
Specifically, if the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, the target high-pressure is maintained, that is, the target high-pressure does not need to be adjusted, and the current frequency of the compressor is maintained, that is, the current frequency does not need to be adjusted; and setting the target indoor temperature as a second set temperature.
And step 230, when the current indoor temperature is higher than the first set temperature, determining the frequency modulation operation of the compressor according to the actual high-pressure: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Illustratively, a target indoor temperature is obtained, and a first set temperature is set to be the target indoor temperature minus 0.5 ℃; acquiring a target high-pressure, setting a first set high-pressure as the target high-pressure minus 0.5bar, and setting the target high-pressure as a second set high-pressure; for example, when the current indoor temperature is higher than the target indoor temperature, the numerical value of the actual high-pressure is judged, and if the actual high-pressure is higher than the target high-pressure, the compressor reduces the frequency by 2Hz every 60 seconds; if the actual high-pressure is not lower than the target high-pressure and is not higher than the target high-pressure minus 0.5bar, maintaining the frequency of the current compressor; if the actual high pressure is lower than the target high pressure minus 0.5bar, the compressor is ramped up to 2Hz every 60 seconds.
On the basis of the above embodiments, fig. 3 is a flowchart of another frequency modulation method for an inverter heat pump according to an embodiment of the present application. The frequency modulation method of the variable frequency heat pump is an embodiment of the frequency modulation method of the variable frequency heat pump. Referring to fig. 3, the frequency modulation method of the variable frequency heat pump includes:
Specifically, after the heat pump unit is started, determining the high-pressure of the corresponding condenser according to the obtained gear to obtain an initial target high-pressure; the method for acquiring the current gear of the heat pump unit is various, and optionally, in the embodiment, gear information is acquired by inputting the gear by a user; optionally, different gears correspond to different high-pressure pressures, wherein the corresponding relation is adjusted according to the system and the refrigerant characteristic as required; optionally, in this embodiment, the high pressure corresponding to the gear 1 is 26bar, the high pressure corresponding to the gear 2 is 30bar, and the high pressure corresponding to the gear 3 is 34 bar; it is understood that the corresponding condenser high pressure is determined, as the initial target high pressure, based on the gear obtained by setting.
And 2302, acquiring the outdoor environment temperature, and determining the high pressure of the condenser according to the outdoor environment temperature to obtain an initial target high pressure.
Specifically, after the heat pump unit is started, determining the high-pressure of the corresponding condenser according to the obtained outdoor environment temperature to obtain an initial target high-pressure; the method for acquiring the outdoor environment temperature includes how many ways, and it can be understood that the method for acquiring the outdoor environment temperature is not limited in this embodiment; optionally, different high-pressure pressures are determined correspondingly according to the temperature range of the outdoor environment, wherein the corresponding relation is adjusted as required according to the system, namely the refrigerant characteristic.
In the present embodiment, for example, when the outdoor ambient temperature is not higher than-12 ℃, the high pressure is set to 34bar, that is, the initial target high pressure is set to 34 bar; when the outdoor environment temperature is not higher than-7 ℃, setting the initial target high-pressure to be 32 bar; when the outdoor environment temperature is not higher than 2 ℃, setting the initial target high-pressure to be 30 bar; when the outdoor environment temperature is not higher than 7 ℃, setting the initial target high-pressure to be 28 bar; setting the initial target high-pressure to be 26bar when the outdoor environment temperature is higher than 7 ℃; when the outdoor environment temperature is in fault, the initial target high-pressure is set according to the current gear of the heat pump unit.
And 2303, if the current indoor temperature is lower than the first set temperature, increasing 1bar every set time, and updating the target high pressure until the target high pressure is equal to the highest high pressure allowed by the current gear.
Specifically, the current indoor temperature and the initial target high pressure are obtained, in order to enable the high pressure to be correspondingly set with the indoor temperature to enhance the working effect of the system, optionally, the initial target high pressure is correspondingly adjusted according to the current indoor temperature, and is updated to the target high pressure, so that the frequency modulation operation of the system compressor is conveniently realized through the current indoor temperature and the target high pressure. The method comprises the following steps that (1) the initial target high-pressure is correspondingly adjusted according to the current indoor temperature, optionally, if the current indoor temperature is lower than a first set temperature, the initial target high-pressure is increased by 1bar every set time, and the target high-pressure is obtained; when the target high-pressure is equal to the rated high-pressure, the pressurization is stopped; optionally, the set time is 60 seconds; wherein, the rated high pressure is adjusted according to the system and the refrigerant characteristic; optionally, corresponding rated high-pressure is correspondingly set according to the gears; optionally, the rated high pressure value is set directly according to the system and the refrigerant characteristics.
And 2304, if the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, maintaining the current target high pressure unchanged.
For example, if the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, the current target high pressure is maintained.
2305, if the current indoor temperature is higher than a first set temperature, decreasing the initial target high-pressure by 1bar every set time, and updating the initial target high-pressure to a target high-pressure; wherein the depressurization is stopped when the target high-pressure is not more than the high-pressure.
For example, if the current indoor temperature is higher than a first set temperature, optionally, the initial target high-pressure is reduced by 1bar every set time, and the target high-pressure is updated; stopping depressurization when the target high-pressure is not greater than the high-pressure; optionally, the set time is 60 seconds; therefore, the initial target high-pressure is correspondingly adjusted according to the current indoor temperature so as to update the target high-pressure, and the frequency modulation operation of the system compressor is conveniently realized through the current indoor temperature and the actual high-pressure.
On the basis of the above embodiment, the frequency modulation method of the variable frequency heat pump may be further embodied as: obtaining the current indoor temperature, comparing with the target indoor temperature, and determining whether the computer needs to be started or not, including: controlling the opening and closing of a compressor based on the difference value between the current indoor temperature and the target indoor temperature: if the difference value of the current indoor environment temperature minus the target indoor temperature is equal to the stop return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target indoor temperature is equal to the starting return difference, controlling the compressor to be started.
Specifically, referring to fig. 4, whether the compressor is started to operate for heating may be determined according to a difference between a detected current indoor temperature and a detected target temperature; if the difference value of the current indoor environment temperature minus the target temperature is equal to the shutdown return difference, the compressor is controlled to be in a heating working state, heating is not needed, and the indoor environment is not needed to be heated; and if the difference value obtained by subtracting the indoor environment temperature from the current target temperature is equal to the starting return difference, controlling the compressor to start the heating working state to heat and raise the temperature of the indoor environment.
Illustratively, the numerical range of the start-up return difference is 0.5-10 ℃, and the numerical range of the stop-up return difference is 0.5-10 ℃; the difference between the target temperature minus the startup return difference and the target temperature is-0.5 ℃ to-10 ℃; the difference between the target temperature plus the shutdown return difference and the target temperature is 0.5 ℃ to 10 ℃. When the difference value of the indoor temperature minus the target temperature is between 0.5 ℃ and 10 ℃, controlling the compressor to be closed; and when the difference value of the indoor temperature minus the target temperature is between-0.5 ℃ and-10 ℃, controlling the compressor to be started.
On the basis of the above embodiment, the frequency modulation method of the variable frequency heat pump may be further embodied as: if the difference value of the current target temperature minus the indoor environment temperature is equal to the starting return difference, after the compressor is controlled to be started, the method further comprises the following steps: the method comprises the steps that a compressor is started, the frequency of the compressor is adjusted in a first time period to obtain a first starting frequency according to preset starting frequency modulation operation, the frequency of the compressor is adjusted in a second time period to obtain a second starting platform frequency, and after the second time period is finished, the second starting platform frequency is used as the initial frequency of the compressor to start adjusting the frequency.
Specifically, referring to fig. 5, after the compressor is started, the frequency is adjusted in two stages, the first stage is a platform adjustment stage, the frequency of the compressor is adjusted first, the compressor is adjusted according to the startup frequency adjustment operation, the frequency of the compressor is adjusted in a first time period to obtain a first startup frequency, the frequency of the compressor is adjusted in a second time period to obtain a second startup platform frequency, and after the second time period is ended, the frequency is adjusted by taking the second startup platform frequency as the initial frequency of the compressor; wherein, within 0-2 minutes after the compressor is started, the frequency of the compressor is controlled to be adjusted to 40 Hz; controlling the frequency of the compressor to be adjusted to 52Hz 2-4 minutes after the compressor is started; the operation frequency of the compressor platform adjusting stage is set according to the system, namely the refrigerant characteristic, and the heat pump system requirement. It can be understood that the compressor frequency obtained in the stage of adjusting the platform is the initial compressor frequency, wherein after the initial compressor frequency is obtained, the stage of freely adjusting the compressor frequency is performed according to the indoor temperature and the high pressure of the condenser.
On the basis of the foregoing embodiment, fig. 6 is a schematic structural diagram of a frequency modulation device of an inverter heat pump according to an embodiment of the present application. Referring to fig. 6, the image processing apparatus provided in this embodiment specifically includes: a power-on determining module 301, a parameter acquiring module 302, a pressure adjusting module 303 and a frequency modulation determining module 304.
The starting-up determining module 301 is configured to obtain a current indoor temperature, compare the current indoor temperature with a target indoor temperature, and determine whether starting up is required; the parameter obtaining module 302 is used for obtaining the current indoor temperature and obtaining the initial target high-pressure of the condenser; the pressure adjusting module 303 is configured to adjust the initial target high pressure based on the current indoor temperature to update a target high pressure; the frequency modulation determination module 304 is configured to determine a frequency modulation operation of the compressor based on a preset rule of the compressor frequency, the current indoor temperature and the target high pressure to adjust the compressor initial frequency.
Further, the frequency modulation determining module 304 includes a frequency modulation operation unit, which is configured to determine a frequency modulation operation of the compressor according to the actual high-pressure when the current indoor temperature is lower than the first set temperature: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Further, the frequency modulation operation unit is also used for keeping the frequency of the current compressor when the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature;
further, the frequency modulation operation unit is further configured to determine a frequency modulation operation of the compressor according to the actual high-pressure when the current indoor temperature is higher than the first set temperature: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
Further, the parameter obtaining module 302 includes a pressure obtaining unit, where the pressure obtaining unit is configured to obtain a current gear of the heat pump unit, and determine the high pressure of the condenser according to the gear, so as to obtain an initial target high pressure.
Further, the pressure obtaining unit is further configured to obtain an outdoor environment temperature, and determine a high pressure of the condenser according to the outdoor environment temperature to obtain an initial target high pressure.
Further, the pressure adjusting module 303 includes a pressure adjusting unit, and the pressure adjusting unit is configured to increase the initial target high pressure by 1bar every set time to update the target high pressure if the current indoor temperature is lower than a first set temperature; and stopping supercharging when the target high-pressure is equal to the highest high-pressure allowed by the current gear.
Further, the pressure adjusting unit is further configured to determine that the initial target high-pressure is a target high-pressure if the current indoor temperature is not lower than a first set temperature and not higher than a second set temperature;
further, the pressure adjusting unit is further configured to reduce the initial target high-pressure by 1bar every set time to update the target high-pressure if the current indoor temperature is higher than a first set temperature; wherein the depressurization is stopped when the target high-pressure is not more than the high-pressure.
Further, the system further comprises an opening control module, wherein the opening control module is used for controlling the opening and closing of the compressor based on the difference value between the current indoor temperature and the target temperature: if the difference value of the current indoor environment temperature minus the target temperature is equal to the stop return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target temperature is equal to the starting return difference, controlling the compressor to be started.
The system further comprises an initial frequency acquisition module, wherein the initial frequency acquisition module is used for adjusting the frequency of the compressor to obtain a first starting frequency in a first time period according to a preset starting frequency modulation operation when the compressor is started, adjusting the frequency of the compressor to obtain a second starting platform frequency in a second time period, and starting to adjust the frequency by taking the second starting platform frequency as the initial frequency of the compressor after the second time period is finished.
Above-mentioned, through obtaining indoor temperature and outdoor temperature to according to the high pressure of the condenser that current outdoor temperature adjustment corresponds, confirm the frequency modulation operation of compressor according to current indoor temperature and high pressure, realize adjusting the frequency of compressor, guaranteed the heating effect, avoided the wrong report of high pressure protection to high pressure's regulation, avoided the unit to heat under higher high pressure simultaneously, thereby guaranteed the efficiency of heating.
The frequency modulation device of the variable frequency heat pump provided by the embodiment of the application can be used for executing the frequency modulation method of the variable frequency heat pump provided by the embodiment, and has corresponding functions and beneficial effects.
The embodiment of the application also provides computer equipment which can be integrated with the frequency modulation device of the variable-frequency heat pump provided by the embodiment of the application. Fig. 7 is a schematic structural diagram of a computer device according to an embodiment of the present application. Referring to fig. 7, the computer apparatus includes: an input device 43, an output device 44, a memory 42, and one or more processors 41; the memory 42 for storing one or more programs; when executed by the one or more processors 41, the one or more programs cause the one or more processors 41 to implement the frequency modulation method of the variable frequency heat pump as provided in the above embodiments. Wherein the input device 43, the output device 44, the memory 42 and the processor 41 may be connected by a bus or other means, for example, in fig. 4.
The processor 41 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 42, that is, the frequency modulation method of the variable frequency heat pump described above is realized.
The computer equipment provided by the embodiment can be used for executing the frequency modulation method of the variable frequency heat pump provided by the embodiment, and has corresponding functions and beneficial effects.
The embodiment of the application also provides a storage medium containing computer executable instructions, wherein the computer executable instructions are used for executing a frequency modulation method of the variable frequency heat pump when being executed by a computer processor, and the frequency modulation method of the variable frequency heat pump comprises the steps of acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the heat pump needs to be started or not; after starting up, acquiring the current outdoor temperature and acquiring the initial target high-pressure of the condenser; adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure; and determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure so as to adjust the initial frequency of the compressor.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDRRAM, SRAM, EDORAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium provided in the embodiments of the present application contains computer-executable instructions, and the computer-executable instructions are not limited to the frequency modulation method of the variable frequency heat pump described above, and may also perform related operations in the frequency modulation method of the variable frequency heat pump provided in any embodiments of the present application.
The frequency modulation device, the storage medium, and the computer apparatus of the variable frequency heat pump provided in the foregoing embodiments may execute the frequency modulation method of the variable frequency heat pump provided in any embodiment of the present application, and refer to the frequency modulation method of the variable frequency heat pump provided in any embodiment of the present application without detailed technical details described in the foregoing embodiments.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (10)
1. A frequency modulation method of a variable frequency heat pump is characterized by comprising the following steps:
acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the computer needs to be started;
after starting up, acquiring the current outdoor temperature and acquiring the initial target high-pressure of the condenser;
adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure;
and determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high pressure so as to adjust the initial frequency of the compressor.
2. The method of claim 1, wherein the determining the frequency modulation operation of the compressor based on the preset rule of the compressor frequency, the current indoor temperature and the target high pressure to adjust the initial compressor frequency comprises:
when the current indoor temperature is lower than the first set temperature, determining the frequency modulation operation of the compressor according to the actual high-pressure: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, the frequency of the current compressor is kept;
when the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, the frequency of the current compressor is kept;
when the current indoor temperature is higher than the first set temperature, determining the frequency modulation operation of the compressor according to the actual high-pressure: if the actual high pressure is higher than the first set high pressure, reducing the frequency of the compressor by 2Hz at set time intervals; if the actual high-pressure is lower than the second set high-pressure, the compressor is increased by 2Hz at set time intervals; and if the actual high-pressure is not lower than the first set high-pressure and not higher than the second set high-pressure, maintaining the current frequency of the compressor.
3. The method of claim 1, wherein the obtaining an initial target high pressure of the condenser comprises:
and acquiring the current gear of the heat pump unit, and determining the initial target high-pressure of the condenser according to the gear.
4. The method of claim 1, wherein the obtaining an initial target high pressure of the condenser comprises:
and acquiring the outdoor environment temperature, and determining the initial target high-pressure of the condenser according to the outdoor environment temperature.
5. The method of frequency modulation of a variable frequency heat pump of claim 1, wherein said adjusting said initial target high pressure based on said current indoor temperature to update a target high pressure comprises:
if the current indoor temperature is lower than a first set temperature, increasing 1bar every set time to update the target high-pressure until the target high-pressure is equal to the highest high-pressure allowed by the current gear;
if the current indoor temperature is not lower than the first set temperature and not higher than the second set temperature, maintaining the current target high-pressure;
if the current indoor temperature is higher than a first set temperature, reducing the initial target high-pressure by 1bar every set time so as to update the target high-pressure; wherein the depressurization is stopped when the target high-pressure is not more than the high-pressure.
6. The frequency modulation method of the inverter heat pump according to claim 1, wherein the obtaining the current indoor temperature, comparing the current indoor temperature with the target indoor temperature, and determining whether the start-up is required comprises:
controlling the opening and closing of a compressor based on the difference value between the current indoor temperature and the target indoor temperature: if the difference value obtained by subtracting the target indoor temperature from the current indoor environment temperature is not less than the shutdown return difference, controlling the compressor to be closed; and if the difference value obtained by subtracting the indoor environment temperature from the current target indoor temperature is not less than the starting return difference, controlling the compressor to be started.
7. The frequency modulation method of an inverter heat pump according to claim 6, wherein if the difference between the current target temperature and the indoor ambient temperature is not less than the startup return difference, after controlling the compressor to start, further comprising:
the method comprises the steps that a compressor is started, the frequency of the compressor is adjusted in a first time period to obtain a first starting platform frequency according to preset starting frequency modulation operation, the frequency of the compressor is adjusted in a second time period to obtain a second starting platform frequency, and after the second time period is finished, the second starting platform frequency is used as the initial frequency of the compressor to start adjusting the frequency.
8. A frequency modulation device of a variable frequency heat pump is characterized by comprising:
the starting-up determining module is used for acquiring the current indoor temperature, comparing the current indoor temperature with the target indoor temperature and determining whether starting-up is needed or not;
the parameter acquisition module is used for acquiring the current outdoor temperature after starting up and acquiring the initial target high-pressure of the condenser;
a pressure adjustment module for adjusting the initial target high pressure based on the current indoor temperature to update a target high pressure;
and the frequency modulation determining module is used for determining the frequency modulation operation of the compressor based on the preset rules of the compressor frequency, the current indoor temperature and the target high-pressure so as to adjust the initial frequency of the compressor.
9. A computer device, comprising: a memory and one or more processors;
the memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of frequency modulation for an inverter heat pump according to any of claims 1-7.
10. A storage medium containing computer executable instructions for performing a method of frequency modulation of an inverter heat pump according to any one of claims 1 to 7 when executed by a computer processor.
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