CN113251567A - Heating control method and device and air conditioning system - Google Patents
Heating control method and device and air conditioning system Download PDFInfo
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- CN113251567A CN113251567A CN202110644416.7A CN202110644416A CN113251567A CN 113251567 A CN113251567 A CN 113251567A CN 202110644416 A CN202110644416 A CN 202110644416A CN 113251567 A CN113251567 A CN 113251567A
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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
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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
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/873—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
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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
- F24F11/88—Electrical aspects, e.g. circuits
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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Abstract
The invention discloses a heating control method and device and an air conditioning system. Wherein, the method comprises the following steps: responding to a first heating instruction, and controlling an air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air treatment combination cabinet which are connected; and under the first heating mode, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature. According to the air treatment combined cabinet, the first heating mode is set, the opening and closing of the electric heating device in the air treatment combined cabinet can be controlled according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature, the automatic and accurate intelligent control of the electric heating device is realized, the heating requirements and the energy conservation of a user are considered to the greatest extent, in addition, the automatic and intelligent control enables the use of the user to be simpler and more convenient, the user experience is improved, the irregular manual control operation of the user can be avoided to a certain extent, the service life of a unit is prolonged, and the potential safety hazard is reduced.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heating control method and device and an air conditioner system.
Background
At present, the air conditioning scheme of combining a multi-connected air conditioner outdoor unit with an air handling unit (combination cabinet) is more and more applied to large and medium-sized energy-saving buildings. The AHU-KIT is an adjusting control device used for connecting the multi-connected outdoor unit and the air treatment combination cabinet, and the refrigerant circulation quantity of the heat exchanger in the air treatment combination cabinet can be adjusted through the AHU-KIT. AHU is an abbreviation for Air Handler Unit, and Chinese is an Air handling Unit.
The AHU-KIT includes a throttling component (which may be an electronic expansion valve, etc.) and a control component, as shown in fig. 1, which is a schematic diagram of an air conditioning system based on the AHU-KIT, and the air conditioning system specifically includes: the system comprises a multi-connected outdoor unit 1, a single electronic expansion valve component 2, a double electronic expansion valve component 3, a control component 4, an air treatment combination cabinet 5, a refrigerant inlet pipe temperature sensing bulb 6, a refrigerant outlet pipe temperature sensing bulb 7, an air return temperature sensing bulb 8 and an air outlet temperature sensing bulb 9. The single electronic expansion valve part 2 and the double electronic expansion valve part 3 are throttling parts in an AHU-KIT, control parts 4 are respectively corresponding to the single electronic expansion valve part and the double electronic expansion valve part, and the control parts 4 are in communication connection with the multi-connected outdoor unit 1 and the corresponding throttling parts. In fig. 1, arrows in the single-electron expansion valve member 2 and the double-electron expansion valve member 3 indicate the flow direction of the refrigerant in the cooling mode. The air treatment combination cabinet 5 is located at the indoor side, a heat exchanger is arranged in the air treatment combination cabinet 5, a refrigerant inlet pipe temperature sensing bulb 6 and a refrigerant outlet pipe temperature sensing bulb 7 are used for detecting the temperature of refrigerants entering and exiting the heat exchanger of the air treatment combination cabinet, the flow directions of the refrigerants in the refrigeration mode and the heating mode are opposite, and the inlet pipe and the outlet pipe are in terms of the flow direction of the refrigerants in the refrigeration mode. The return air temperature sensing bag 8 is used for detecting the temperature (namely the return air temperature) at the return air inlet of the air processing combination cabinet. The air outlet thermal bulb 9 is used for detecting the temperature (namely the air outlet temperature) at the air outlet of the air treatment combination cabinet.
AHU-KIT can realize refrigeration, heating, ventilation and other different mode switch in the existing market, and the inside function section that includes of air treatment assembled cabinet is provided with electric heater unit in front of the heat exchanger or behind, and when electric heater unit opened, can heat the air that will get into indoor. When heating, the user uses remote control or wire controller to carry out manual regulation to electric heater unit according to self demand, selects to close or open electric heater unit, can have following two kinds of situations: (1) the electric heating device is turned off, so that the heating capacity is not enough, and the heating requirement of a user cannot be met; (2) when the electric heating is started, the heating capacity is excessive, and unnecessary energy consumption is increased under the condition of meeting the heating requirement of a user. That is to say, the above-mentioned manual control electric heater unit's mode is intelligent enough, and user experience is relatively poor.
Disclosure of Invention
The embodiment of the invention provides a heating control method, a heating control device and an air conditioning system, which at least solve the problem that the control of an electric heating device in an air treatment combination cabinet in the prior art is not intelligent enough.
To solve the above technical problem, an embodiment of the present invention provides a heat control method, including: responding to a first heating instruction, and controlling an air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air treatment combination cabinet which are connected; and under the first heating mode, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature.
Optionally, controlling the on/off of the electric heating device in the air processing combination sideboard according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature, including: executing the following steps A and B in a circulating mode until the first heating mode is exited: step A, under the condition that the electric heating device is in an opening state, judging whether the exhaust temperature of the compressor meets a closing condition, and if the exhaust temperature of the compressor meets the closing condition, closing the electric heating device; and B, under the condition that the electric heating device is in a closed state, judging whether the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, and if the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, opening the electric heating device.
Optionally, the shutdown condition is any one of the following: the compressor discharge temperature is greater than or equal to a temperature threshold; detecting that the exhaust temperature of the compressor is greater than or equal to the temperature threshold value for a first preset time or a first preset number of times; the starting condition is any one of the following conditions: the exhaust temperature of the compressor is less than the temperature threshold value, and the indoor environment temperature is less than or equal to the difference value between the set temperature and the preset value; and when the compressor exhaust temperature is detected to be smaller than the temperature threshold value and the indoor environment temperature is detected to be smaller than or equal to the difference value between the set temperature and the preset value, continuously performing the second preset time or continuously performing the second preset times.
Optionally, the method further includes: under a first heating mode, acquiring the current outdoor environment temperature according to a preset rule; and determining the temperature threshold according to the current outdoor environment temperature.
Optionally, determining the temperature threshold according to the current outdoor environment temperature includes: determining a ring temperature interval where the current outdoor environment temperature is; determining an exhaust temperature judgment value corresponding to an environment temperature interval where the current outdoor environment temperature is located as the temperature threshold value according to a corresponding relation between a preset environment temperature interval and the exhaust temperature judgment value; wherein, the larger the outdoor environment temperature is, the larger the corresponding exhaust temperature judgment value is.
Optionally, in response to the first heating instruction, controlling the air conditioning system to enter the first heating mode includes: if the first heating instruction is used for indicating starting and entering a first heating mode, controlling the outdoor unit and the air treatment combination cabinet to start, and controlling a fan in the air treatment combination cabinet to operate for a third preset time, and then starting the electric heating device; judging whether the running time of the compressor reaches a fourth preset time after starting, wherein the third preset time is less than the fourth preset time; and if the running time of the compressor reaches the fourth preset time, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature.
Optionally, if the first heating instruction is used to instruct to switch from the current mode to the first heating mode, before performing step a and step B in a loop, the method further includes: acquiring the current state of the electric heating device; if the current state of the electric heating device is the closing state, the step B is executed firstly; and if the current state of the electric heating device is the starting state, the step A is executed firstly.
Optionally, the method further includes: responding to a second heating instruction, controlling the air conditioning system to enter a second heating mode, and controlling the electric heating device to be always in an on state in the second heating mode; or responding to a third heating instruction, and controlling the air conditioning system to enter a third heating mode, wherein in the third heating mode, the electric heating device is controlled to be in a closed state all the time.
An embodiment of the present invention further provides a heating control apparatus, including: the first control module is used for responding to a first heating instruction and controlling the air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air treatment combination cabinet which are connected; and the second control module is used for controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature in the first heating mode.
An embodiment of the present invention further provides an air conditioning system, including: the embodiment of the invention provides a heating control device.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a heating control method according to an embodiment of the present invention.
By applying the technical scheme of the invention, aiming at the air conditioning system comprising the outdoor unit and the air treatment combination cabinet which are connected, the air conditioning system is controlled to enter the first heating mode in response to the first heating instruction, and the electric heating device in the air treatment combination cabinet is controlled to be switched on and off according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature in the first heating mode. Through setting up first mode of heating, can be according to compressor exhaust temperature, indoor ambient temperature and settlement temperature, electric heater unit's switching in the control air treatment assembled cabinet, realize electric heater unit's automatic accurate intelligent control, furthest compromises user's demand and energy-conservation nature of heating, and, automatic intelligent control makes the user use more portably, improve user experience, can avoid the manual control operation that the user is not normal to a certain extent, extension unit life, reduce the potential safety hazard.
Drawings
FIG. 1 is a schematic diagram of a prior art AHU-KIT based air conditioning system;
fig. 2 is a flowchart of a heating control method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a heating control method according to a second embodiment of the present invention;
fig. 4 is a block diagram of a heating control apparatus according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
Example one
The embodiment provides a heating control method, which is applicable to an AHU-KIT-based air conditioning system, namely, an outdoor unit and an air treatment combination cabinet are connected through the AHU-KIT. The method can realize the intelligent control of the electric heating device in the air treatment combined cabinet, and gives consideration to the heating requirements of users and energy conservation to the maximum extent.
Fig. 2 is a flowchart of a heating control method according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:
s201, responding to a first heating instruction, and controlling an air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air processing combination cabinet which are connected.
And S202, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature in the first heating mode.
The first heating instruction is mainly used for indicating the air conditioning system to enter a first heating mode, specifically, indicating the air conditioning system to be started and enter the first heating mode, and also indicating the air conditioning system to be switched from the current mode to the first heating mode. The user can select to use the first heating mode according to the actual requirement of the user, and a first heating instruction is sent out through a remote controller or a wire controller. The first heating mode is a balance mode, the refrigerant circulates in the outdoor unit and the air treatment combination cabinet to heat, and meanwhile, the opening and closing of the electric heating device in the air treatment combination cabinet can be automatically controlled, so that the insufficient heating capacity or the excessive heating capacity of the refrigerant can be avoided. Under first mode of heating, can be according to compressor exhaust temperature, indoor ambient temperature and settlement temperature, the switching of electric heater unit in the automatic accurate control air treatment assembled cabinet both can satisfy the user demand of heating, can reduce the unnecessary energy consumption again.
The heating control method of this embodiment, for an air conditioning system including an outdoor unit and an air handling combination cabinet connected to each other, controls the air conditioning system to enter a first heating mode in response to a first heating instruction, and controls, in the first heating mode, on and off of an electric heating device in the air handling combination cabinet according to a discharge temperature of a compressor, an indoor environment temperature, and a set temperature. Through setting up first mode of heating, can be according to compressor exhaust temperature, indoor ambient temperature and settlement temperature, electric heater unit's switching in the control air treatment assembled cabinet, realize electric heater unit's automatic accurate intelligent control, furthest compromises user's demand and energy-conservation nature of heating, and, automatic intelligent control makes the user use more portably, improve user experience, can avoid the manual control operation that the user is not normal to a certain extent, extension unit life, reduce the potential safety hazard.
In one embodiment, controlling the opening and closing of an electric heating device in an air handling unit cabinet based on a compressor discharge temperature, an indoor ambient temperature, and a set temperature includes:
executing the following steps A and B in a circulating mode until the first heating mode is exited:
step A, under the condition that the electric heating device is in an opening state, judging whether the exhaust temperature of the compressor meets a closing condition, and if the exhaust temperature of the compressor meets the closing condition, closing the electric heating device;
and B, under the condition that the electric heating device is in a closed state, judging whether the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, and if the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, starting the electric heating device.
And if the closing condition is not met under the condition that the electric heating device is in the opening state, the electric heating device maintains the opening state. When the electric heating device is in the off state, if the on condition is not satisfied, the electric heating device maintains the off state.
During the heating process, the exhaust temperature of the compressor and the indoor environment temperature can be monitored in real time. The operation of determining whether the closing condition is satisfied and the operation of determining whether the opening condition is satisfied may be performed according to a preset determination period, and the determination period of the closing condition may be the same as or different from the determination period of the opening condition. The judgment period can be set according to actual conditions, and the value of the judgment period is short, so that unnecessary real-time judgment can be avoided, and the condition that the electric heating device is adjusted in time according to temperature parameters can be ensured.
Specifically, the first heating mode may be exited when the mode exit condition is satisfied, for example, the first heating mode may be exited after receiving an exit operation instruction from a user, the first heating mode may be automatically exited after the first heating mode is operated for a certain time, or the first heating mode may be automatically exited after the operation parameter of the air conditioning system reaches a certain condition.
In the first heating mode, the closing condition and the opening condition are judged according to the temperature parameter cycle based on the opening and closing state of the electric heating device, so that the opening and closing of the electric heating device can be timely and reasonably adjusted according to the temperature parameter, and the heating requirement and the energy saving performance of a user are considered to the maximum extent.
The shutdown condition is any one of the following:
the compressor discharge temperature is greater than or equal to a temperature threshold;
and detecting that the discharge temperature of the compressor is greater than or equal to the temperature threshold value for a first preset time or a first preset number of times.
The exhaust temperature of the compressor is greater than or equal to the temperature threshold value, the refrigerant in the air conditioning system is circulated, the current heating requirement can be met, at the moment, the electric heating device can be turned off, and only the refrigerant is used for heating. The first preset time is greater than or equal to 2T1，T1Indicating closureThe condition determination period, that is, the determination of the shutdown condition can be completed at least 2 times within the first preset time. The first preset number is a positive integer greater than or equal to 2.
Whether the electric heating device needs to be closed or not can be effectively and reliably judged through the exhaust temperature of the compressor, and intelligent control of the electric heating device is realized. Whether the electric heating device needs to be closed or not can be judged more accurately by setting first preset time or first preset times, so that the accuracy and the reasonability of the control of the electric heating device are improved.
The above-mentioned start condition is any of the following:
the exhaust temperature of the compressor is less than a temperature threshold value, and the indoor environment temperature is less than or equal to the difference value between the set temperature and the preset value;
and when the second preset time or the second preset times are continued, detecting that the exhaust temperature of the compressor is less than the temperature threshold and the indoor environment temperature is less than or equal to the difference value between the set temperature and the preset value.
The preset value is smaller, for example, the preset value may be 1. In the heating process, the indoor environment temperature is smaller than or equal to the difference value between the set temperature and the preset value, which indicates that the indoor environment temperature is low and does not reach the target temperature required by the user. The exhaust temperature of the compressor is smaller than the temperature threshold value, and the indoor environment temperature is smaller than or equal to the difference value between the set temperature and the preset value, which indicates that the current heating requirement cannot be met by means of refrigerant circulation, and at the moment, the electric heating device needs to be started to assist in heating.
The second preset time is greater than or equal to 2T2，T2The judgment period of the opening condition is represented, that is, the judgment of the opening condition can be completed at least 2 times within the second preset time. The second predetermined number of times is a positive integer greater than or equal to 2.
Through compressor exhaust temperature, indoor ambient temperature and settlement temperature, can judge effectively reliably whether need open electric heater unit, realize electric heater unit's intelligent control. And, through setting up the second and predetermineeing time or the second and predetermine the number of times, can judge more accurately whether need open electric heater unit to improve electric heater unit control's accuracy and rationality.
The opening condition and the closing condition of the electric heating device both relate to temperature thresholds, the temperature thresholds can be preset fixed values, and corresponding temperature thresholds can also be determined according to outdoor environment temperature, so that the control of the electric heating device is more reasonable and intelligent. Specifically, in a first heating mode, the current outdoor environment temperature is obtained according to a preset rule; and determining a temperature threshold according to the current outdoor environment temperature.
The preset rule specifies a time for determining the temperature threshold, specifically, the current outdoor environment temperature may be periodically obtained according to a set time interval to determine the temperature threshold, or the current outdoor environment temperature may be obtained before the judgment of the closing condition or before the judgment of the opening condition to determine the temperature threshold, or the determination of the temperature threshold may be performed once when the change of the outdoor environment temperature is detected. The time interval may be set according to the weather conditions in the area where the air conditioning system is located. It should be noted that, after entering the first heating mode, before starting to control the on/off of the electric heating device in the air processing combination cabinet according to the discharge temperature of the compressor, the indoor ambient temperature and the set temperature, a temperature threshold needs to be determined once according to the current outdoor ambient temperature, and then the temperature threshold may be determined according to a preset rule, so that the temperature threshold is updated along with the change of the outdoor ambient temperature.
This embodiment confirms the temperature threshold value according to outdoor ambient temperature, and can guarantee timely renewal of temperature threshold value according to the rule of predetermineeing for the condition of opening and close more accords with current outdoor environment, more is favorable to electric heater unit's accurate intelligent control.
As an optional embodiment, determining the temperature threshold according to the current outdoor environment temperature includes: determining a ring temperature interval of the current outdoor environment temperature; determining an exhaust temperature judgment value corresponding to the environment temperature interval where the current outdoor environment temperature is located as a temperature threshold value according to the corresponding relation between the preset environment temperature interval and the exhaust temperature judgment value; wherein, the larger the outdoor environment temperature is, the larger the corresponding exhaust temperature judgment value is.
The correspondence between the temperature range around the exhaust gas and the judgment value of the exhaust gas temperature is shown in table 1:
TABLE 1 corresponding table of temperature range and exhaust temperature judgment value
| Outdoor ambient temperature TOuter cover | Exhaust temperature judgment value |
| TOuter cover＜Tw1 | Tp1 |
| Tw1≤TOuter cover＜Tw2 | Tp2 |
| TOuter cover≥Tw2 | Tp3 |
Wherein, Tp1＜Tp2＜Tp3And T isp1、Tp2And Tp3Are all at a higher temperature, e.g. Tp1、Tp2And Tp3Are all higher than 60 ℃. Table 1 is merely an example, and in practical applications, the ring temperature intervals may be divided according to actual temperature conditions, and the number of the ring temperature intervals is not limited to 3.
This embodiment is through the outdoor ambient temperature interval of difference, defines the exhaust temperature judgement value that corresponds, can confirm suitable temperature threshold value fast reliably according to the actual temperature condition for judge opening condition and closing condition, thereby guarantee electric heater unit's accurate intelligent control.
The temperature threshold may be determined in other feasible manners, such as, for example, storing a plurality of outdoor environment temperature values and corresponding exhaust temperature determination values in advance, looking up a table to find the corresponding exhaust temperature determination value according to the current outdoor environment temperature, and if the same outdoor environment temperature value is not found, using the exhaust temperature determination value corresponding to the outdoor environment temperature value closest to the current outdoor environment temperature in the table as the temperature threshold.
In one embodiment, controlling the air conditioning system to enter the first heating mode in response to the first heating command includes: if the first heating instruction is used for indicating starting and entering a first heating mode, controlling the outdoor unit and the air processing combination cabinet to start, and controlling a fan in the air processing combination cabinet to run for a third preset time and then starting the electric heating device; judging whether the running time of the compressor reaches a fourth preset time after starting, wherein the third preset time is less than the fourth preset time; and if the running time of the compressor reaches the fourth preset time, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature.
The third preset time can be set according to actual conditions. In the air treatment combined cabinet, the electric heating device is interlocked with the fan, namely, the electric heating device can be started after the fan runs, so that the electric heating device is prevented from being burnt; after the electric heating device is closed, the fan can be closed after continuously running for a period of time, and the waste heat of the electric heating device is ensured to be blown away.
The fourth preset time is the time for ensuring the refrigerant to circulate in the outdoor unit and the air processing combination cabinet. The fourth preset time may be set according to an actual operation condition, for example, a value of the fourth preset time may be 5 min. The third preset time is less than the fourth preset time, and the judgment of the closing condition is started only after the electric heating device is started.
In the embodiment, when the first heating instruction is used for instructing the start-up and entering the first heating mode, the electric heating device is turned on to realize rapid indoor temperature rise in consideration of the fact that the refrigerant is not circulated immediately after the start-up and the heating effect is not good. When the running time of the compressor reaches the fourth preset time, the refrigerant is basically circulated, under the condition, the judgment of the closing condition is started according to the exhaust temperature of the compressor, and unnecessary judgment operation can be avoided when the exhaust temperature of the compressor does not meet the closing condition in the initial starting stage.
If the first heating instruction is used for indicating to switch from the current mode to the first heating mode, before the step a and the step B are executed circularly, the method further includes: acquiring the current state of the electric heating device; if the current state of the electric heating device is the closing state, firstly executing the step B; if the current state of the electric heating device is the opening state, the step A is executed first. The current mode may be a second heating mode, a third heating mode, or other modes (such as a defrost mode, etc.), and the second heating mode and the third heating mode will be described later. In the present mode, the electric heating device may be in an off state or may be in an on state. After the present embodiment enters the first heating mode, it is determined whether step a or step B is to be executed first according to the current state of the electric heating device, and the cycle determination control for opening and closing the electric heating device is started in the first heating mode.
In addition to the first heating mode, the present embodiment further sets another heating mode, and the method further includes: responding to a second heating instruction, controlling the air conditioning system to enter a second heating mode, and controlling the electric heating device to be always in an open state in the second heating mode; or in response to a third heating instruction, controlling the air conditioning system to enter a third heating mode, and controlling the electric heating device to be in a closed state all the time in the third heating mode.
The second heating instruction is used for instructing the air conditioning system to enter a second heating mode, the second heating mode is a powerful heating mode, and the electric heating device needs to be always turned on in the second heating mode. The third heating instruction is used for instructing the air conditioning system to enter a third heating mode, the third heating mode is an energy-saving mode, and in the third heating mode, the electric heating device needs to be turned off all the time. With respect to exiting the second heating mode and exiting the third heating mode, similar to exiting the first heating mode, detailed description thereof is omitted.
The user can select to use the first heating mode, the second heating mode or the third heating mode according to the actual demand of the user on energy conservation or comfort, and can specifically send out a corresponding heating instruction through a remote control or a wire controller. In the three heating modes, the outdoor unit and the air processing combined cabinet are always kept to heat through refrigerant circulation.
This embodiment can guarantee powerful heating through setting up the second mode of heating, through setting up the third mode of heating, can energy saving, satisfies different user's demands from this.
Example two
The heating control method is described below with reference to a specific embodiment, but it should be noted that the specific embodiment is only for better describing the present application and is not to be construed as limiting the present application. The same or corresponding terms as those of the above-described embodiments are explained, and the description of the present embodiment is omitted.
As shown in fig. 3, the heating control method includes the steps of:
and S301, connecting the multi-connected outdoor unit and the air treatment combination cabinet through an AHU-KIT.
S302, heating operation is carried out.
S303, the user selects a mode.
S304, determining that the user selects the first heating mode according to the instruction.
S305, both the outdoor unit and the air treatment combination cabinet are started, the electric heating device is directly started after the fan in the air treatment combination cabinet operates for a period of time according to the set wind gear, and the operation is started for t1 time by the compressor, and then S306 is entered.
S306, judging whether T is metRow board≥TpIf so, it indicates that the refrigerant is circulated, the heat pump can meet the current heating requirement, and the process proceeds to S307, otherwise, the process proceeds to S310. T isRow boardIndicating compressor discharge temperature, TpIndicating a temperature threshold, the determination of which is described with reference to the above embodiments.
S307, the electric heating device is closed, and only the heat pump is adopted for heating.
S308, after the electric heating device enters the closed state, judging whether T is met or not within T2 continuous timeRow board＜TpAnd TInner part≤TIs provided with-1, if yes, go to S309, if no, go to S311. T isInner partIndicating the indoor ambient temperature, TIs provided withIndicating the set temperature.
S309, the electric heating device is started, and the process returns to S306 to continue judging.
S310, the current situation is maintained, namely, the electric heating device is continuously in the opening state.
S311, the status is maintained, that is, the electric heating device continues to be in the off state.
And S312, determining that the user selects the second heating mode according to the instruction.
S313, forcibly turning on the electric heating device, i.e., in the second heating mode, the electric heating device is kept on all the time.
And S314, determining that the user selects the third heating mode according to the instruction.
S315, the electric heating device is not turned on, that is, in the third heating mode, the electric heating device is kept turned off all the time.
If the mode is switched to the first heating mode from other modes, after the first heating mode is entered, the steps from S306 to S311 are executed in a loop from S306 or S308 according to the current state of the electric heating device until the first heating mode is exited.
The embodiment provides three heating modes, different user requirements can be met, and the user can select the modes according to actual requirements. Under the first heating mode, judge when to open or close electric heater unit according to compressor exhaust temperature, indoor ambient temperature and settlement temperature, realize electric heater unit's automatic intelligent control, and control accuracy is higher, and furthest takes into account energy-conservation and travelling comfort, can reduce unnecessary energy consumption loss when guaranteeing the user's demand of heating, reaches energy saving and emission reduction's effect, guarantees the sustainable operation of unit. Automatic intelligent control, the user uses more portably, improves user experience, and can avoid the manual control operation that the user is irregular to a certain extent, extension unit life reduces the potential safety hazard.
EXAMPLE III
Based on the same inventive concept, the present embodiment provides a heating control apparatus, which can be used to implement the heating control method described in the above embodiments. The heating control device may be implemented by software and/or hardware.
Fig. 4 is a block diagram of a heating control apparatus according to a third embodiment of the present invention, and as shown in fig. 4, the apparatus includes:
the first control module 41 is configured to, in response to a first heating instruction, control an air conditioning system to enter a first heating mode, where the air conditioning system includes an outdoor unit and an air handling combination cabinet that are connected to each other;
and a second control module 42, configured to control, in the first heating mode, on and off of the electric heating device in the air treatment combination cabinet according to the compressor discharge temperature, the indoor environment temperature, and the set temperature.
Optionally, the second control module 42 is specifically configured to: executing the following steps A and B in a circulating mode until the first heating mode is exited:
step A, under the condition that the electric heating device is in an opening state, judging whether the exhaust temperature of the compressor meets a closing condition, and if the exhaust temperature of the compressor meets the closing condition, closing the electric heating device;
and B, under the condition that the electric heating device is in a closed state, judging whether the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, and if the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, opening the electric heating device.
Optionally, the shutdown condition is any one of the following:
the compressor discharge temperature is greater than or equal to a temperature threshold;
and detecting that the discharge temperature of the compressor is greater than or equal to the temperature threshold value for a first preset time or a first preset number of times.
Optionally, the starting condition is any one of the following conditions:
the exhaust temperature of the compressor is less than the temperature threshold value, and the indoor environment temperature is less than or equal to the difference value between the set temperature and the preset value;
and when the compressor exhaust temperature is detected to be smaller than the temperature threshold value and the indoor environment temperature is detected to be smaller than or equal to the difference value between the set temperature and the preset value, continuously performing the second preset time or continuously performing the second preset times.
Optionally, the heating control apparatus further includes:
the acquisition module is used for acquiring the current outdoor environment temperature according to a preset rule in a first heating mode;
and the determining module is used for determining the temperature threshold according to the current outdoor environment temperature.
Optionally, the determining module includes:
the first determining unit is used for determining a ring temperature interval where the current outdoor environment temperature is located;
a second determining unit, configured to determine, according to a preset correspondence between an ambient temperature interval and an exhaust temperature determination value, an exhaust temperature determination value corresponding to the ambient temperature interval in which the current outdoor environment temperature is located, as the temperature threshold; wherein, the larger the outdoor environment temperature is, the larger the corresponding exhaust temperature judgment value is.
Optionally, the first control module 41 includes:
the control unit is used for controlling the outdoor unit and the air processing combination cabinet to be started up and controlling a fan in the air processing combination cabinet to operate for a third preset time and then starting the electric heating device if the first heating instruction is used for indicating the start-up and entering a first heating mode;
the judging unit is used for judging whether the running time of the compressor reaches a fourth preset time after starting up, wherein the third preset time is less than the fourth preset time;
and the indicating unit is used for indicating the second control module 42 to start controlling the on-off of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature if the running time of the compressor reaches the fourth preset time.
Optionally, the second control module 42 includes:
the acquiring unit is used for acquiring the current state of the electric heating device before the step A and the step B are executed circularly if the first heating instruction is used for indicating to switch from the current mode to the first heating mode;
the execution unit is used for executing the step B firstly if the current state of the electric heating device is the closing state; and if the current state of the electric heating device is the opening state, executing the step A first.
Optionally, the heating control apparatus further includes:
the third control module is used for responding to a second heating instruction, controlling the air conditioning system to enter a second heating mode, and controlling the electric heating device to be always in an on state in the second heating mode;
and the fourth control module is used for responding to a third heating instruction, controlling the air conditioning system to enter a third heating mode, and controlling the electric heating device to be always in a closed state in the third heating mode.
The heating control device can execute the method provided by the embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiment of the present invention.
Example four
The present embodiment provides an air conditioning system including: the heating control apparatus according to the above embodiment.
EXAMPLE five
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the heating control method as described in the above embodiments.
EXAMPLE six
The present embodiment provides an electronic device, including: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to implement the heating control method according to the above embodiment.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A method of controlling heating, comprising:
responding to a first heating instruction, and controlling an air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air treatment combination cabinet which are connected;
and under the first heating mode, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature.
2. The method of claim 1, wherein controlling the opening and closing of the electric heating device in the air handling assembly based on the compressor discharge temperature, the indoor ambient temperature, and the set point temperature comprises:
executing the following steps A and B in a circulating mode until the first heating mode is exited:
step A, under the condition that the electric heating device is in an opening state, judging whether the exhaust temperature of the compressor meets a closing condition, and if the exhaust temperature of the compressor meets the closing condition, closing the electric heating device;
and B, under the condition that the electric heating device is in a closed state, judging whether the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, and if the exhaust temperature of the compressor, the indoor environment temperature and the set temperature meet the opening condition, opening the electric heating device.
3. The method of claim 2,
the shut-down condition is any one of:
the compressor discharge temperature is greater than or equal to a temperature threshold;
detecting that the exhaust temperature of the compressor is greater than or equal to the temperature threshold value for a first preset time or a first preset number of times;
the starting condition is any one of the following conditions:
the exhaust temperature of the compressor is less than the temperature threshold value, and the indoor environment temperature is less than or equal to the difference value between the set temperature and the preset value;
and when the compressor exhaust temperature is detected to be smaller than the temperature threshold value and the indoor environment temperature is detected to be smaller than or equal to the difference value between the set temperature and the preset value, continuously performing the second preset time or continuously performing the second preset times.
4. The method of claim 3, further comprising:
under a first heating mode, acquiring the current outdoor environment temperature according to a preset rule;
and determining the temperature threshold according to the current outdoor environment temperature.
5. The method of claim 4, wherein determining the temperature threshold based on the current outdoor ambient temperature comprises:
determining a ring temperature interval where the current outdoor environment temperature is;
determining an exhaust temperature judgment value corresponding to an environment temperature interval where the current outdoor environment temperature is located as the temperature threshold value according to a corresponding relation between a preset environment temperature interval and the exhaust temperature judgment value;
wherein, the larger the outdoor environment temperature is, the larger the corresponding exhaust temperature judgment value is.
6. The method of any of claims 1 to 5, wherein controlling the air conditioning system to enter the first heating mode in response to the first heating command comprises:
if the first heating instruction is used for indicating starting and entering a first heating mode, controlling the outdoor unit and the air treatment combination cabinet to start, and controlling a fan in the air treatment combination cabinet to operate for a third preset time, and then starting the electric heating device;
judging whether the running time of the compressor reaches a fourth preset time after starting, wherein the third preset time is less than the fourth preset time;
and if the running time of the compressor reaches the fourth preset time, controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature.
7. The method as claimed in any one of claims 2 to 5, wherein if the first heating command is used to instruct switching from the current mode to the first heating mode, before performing step A and step B in a loop, the method further comprises:
acquiring the current state of the electric heating device;
if the current state of the electric heating device is the closing state, the step B is executed firstly;
and if the current state of the electric heating device is the starting state, the step A is executed firstly.
8. The method of any one of claims 1 to 5, further comprising:
responding to a second heating instruction, controlling the air conditioning system to enter a second heating mode, and controlling the electric heating device to be always in an on state in the second heating mode; alternatively, the first and second electrodes may be,
and responding to a third heating instruction, controlling the air conditioning system to enter a third heating mode, and controlling the electric heating device to be in an off state all the time in the third heating mode.
9. A heating control device, characterized by comprising:
the first control module is used for responding to a first heating instruction and controlling the air conditioning system to enter a first heating mode, wherein the air conditioning system comprises an outdoor unit and an air treatment combination cabinet which are connected;
and the second control module is used for controlling the opening and closing of the electric heating device in the air treatment combination cabinet according to the exhaust temperature of the compressor, the indoor environment temperature and the set temperature in the first heating mode.
10. An air conditioning system, comprising: the heating control apparatus according to claim 9.
11. A computer-readable storage medium on which a computer program is stored, the program, when executed by a processor, implementing the heating control method according to any one of claims 1 to 8.
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