CN109357374B - Heating control method and device and multi-split air conditioning system - Google Patents
Heating control method and device and multi-split air conditioning system Download PDFInfo
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- CN109357374B CN109357374B CN201811253362.6A CN201811253362A CN109357374B CN 109357374 B CN109357374 B CN 109357374B CN 201811253362 A CN201811253362 A CN 201811253362A CN 109357374 B CN109357374 B CN 109357374B
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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
- F24F11/70—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
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump 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
- F24F2110/12—Temperature of the outside air
Abstract
The invention provides a heating control method and device and a multi-split air conditioning system. The heating control method and the heating control device can be applied to a multi-split air conditioning system, the multi-split air conditioning system comprises an outdoor unit and a plurality of indoor units, the outdoor unit is provided with a temperature acquisition unit, and the heating control method comprises the following steps: when the multi-split air conditioning system is detected to run at a partial load, acquiring the outdoor environment temperature acquired by a temperature acquisition unit; acquiring the load rate of a starting indoor unit of the multi-split air-conditioning system; adjusting the target condensation temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load rate of the starting indoor unit; and controlling a compressor of the multi-split air conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature. That is, the target condensing temperature is adjusted by the outdoor environment temperature and the load factor of the indoor unit during partial load, so that the heating effect of the partial load can be effectively improved, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a heating control method and device and a multi-split air conditioner system.
Background
At present, in the heating control of a multi-split air conditioning system, a partial load and a full-open load are controlled according to the same target condensation temperature, and in order to ensure the reliability of a unit and control the noise of the unit when the unit is fully open, the target condensation temperature is not set too high generally, so that the improvement of the target condensation temperature when the partial load is carried out is limited, and the heating effect when the partial load is caused is general. Meanwhile, as the outdoor environment temperature decreases, for example, in winter, the heat load becomes large, the heating effect of the multi-split air conditioning system becomes poor, and user comfort is affected.
Disclosure of Invention
In view of the above, the present invention is directed to a heating control method to solve the above problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a heating control method is applied to a multi-split air conditioning system, the multi-split air conditioning system comprises an outdoor unit and a plurality of indoor units, the outdoor unit is provided with a temperature acquisition unit, and the heating control method comprises the following steps: when the multi-split air conditioning system is detected to run at a partial load, acquiring the outdoor environment temperature acquired by the temperature acquisition unit; acquiring the load rate of the startup indoor unit of the multi-split air conditioning system; adjusting the target condensation temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load factor of the starting indoor unit; and controlling the compressor of the multi-split air conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature.
Further, the step of adjusting the target condensing temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load factor of the indoor unit comprises: comparing the outdoor environment temperature with a first preset threshold and a second preset threshold, and comparing the load rate of the started indoor unit with the load rate of a preset indoor unit; when the outdoor environment temperature is higher than a first preset threshold value, if the load rate of the starting indoor unit is higher than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a first temperature, and if the load rate of the starting indoor unit is lower than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature; when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a third temperature; when the outdoor environment temperature is smaller than or equal to a second preset threshold value, if the load rate of the starting indoor unit is larger than or equal to the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a third temperature, and if the load rate of the starting indoor unit is smaller than the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a fourth temperature.
Further, the first preset threshold is 10 ℃, and the second preset threshold is 4 ℃.
Further, the preset indoor unit load factor is [ 50%, 80% ].
Further, the first temperature is [48 ℃, 51 ℃ ], the second temperature is [51 ℃, 54 ℃ ], the third temperature is [54 ℃, 57 ℃ ], and the fourth temperature is [57 ℃, 60 ℃ ].
Further, the step of obtaining the load factor of the indoor unit of the multi-split air conditioning system comprises: acquiring the capacity of a starting indoor unit and the capacity of an outdoor unit of the multi-split air conditioning system; and calculating the ratio of the capacity of the starting indoor unit to the capacity of the outdoor unit to obtain the load rate of the starting indoor unit.
Compared with the prior art, the heating control method has the following advantages:
in the heating control method, when partial load operation of a unit is detected in the heating process of the multi-split air-conditioning system, the outdoor environment temperature acquired by a temperature acquisition unit and the load rate of a starting indoor unit of the multi-split air-conditioning system are acquired; and then adjusting the target condensation temperature of the multi-split air-conditioning system according to the outdoor environment temperature and the load rate of the starting indoor unit, and controlling the compressor of the multi-split air-conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature. That is, the target condensing temperature of the unit during partial load operation is adjusted through the outdoor environment temperature and the load factor of the starting indoor unit, so that the heating effect of the partial load can be effectively improved, and the user experience is improved.
Another objective of the present invention is to provide a heating control device to solve the above problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a heating control device, is applied to many online air conditioning system, many online air conditioning system includes off-premises station and a plurality of indoor set, the off-premises station is provided with the temperature and passes the collection unit, heating control device includes: the first acquisition module is used for acquiring the outdoor environment temperature acquired by the temperature acquisition unit when the multi-split air conditioning system is detected to run at a partial load; the second acquisition module is used for acquiring the load rate of the startup indoor unit of the multi-split air conditioning system; the execution module is used for adjusting the target condensation temperature of the multi-split air-conditioning system according to the outdoor environment temperature and the load factor of the starting indoor unit; and the control module is used for controlling the frequency of the compressor of the multi-split air conditioning system to be increased and decreased according to the target condensation temperature.
Further, the execution module is specifically configured to: comparing the outdoor environment temperature with a first preset threshold and a second preset threshold, and comparing the load rate of the started indoor unit with the load rate of a preset indoor unit; when the outdoor environment temperature is higher than a first preset threshold value, if the load rate of the starting indoor unit is higher than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a first temperature, and if the load rate of the starting indoor unit is lower than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature; when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a third temperature; when the outdoor environment temperature is smaller than or equal to a second preset threshold value, if the load rate of the starting indoor unit is larger than or equal to the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a third temperature, and if the load rate of the starting indoor unit is smaller than the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a fourth temperature.
Further, the second obtaining module is specifically configured to: acquiring the capacity of a starting indoor unit and the capacity of an outdoor unit of the multi-split air conditioning system; and calculating the ratio of the capacity of the starting indoor unit to the capacity of the outdoor unit to obtain the load rate of the starting indoor unit.
The heating control device and the heating control method have the same advantages compared with the prior art, and are not described again here.
Another object of the present invention is to provide a multi-split air conditioning system to solve the above problems.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the utility model provides a many online air conditioning system, many online air conditioning system includes off-premises station and a plurality of indoor set, the off-premises station is provided with the temperature acquisition unit, many online air conditioning system still includes: one or more controllers; a memory for storing one or more programs that, when executed by the one or more controllers, cause the one or more controllers to implement the aforementioned heating control method.
Compared with the prior art, the multi-split air conditioning system and the heating control method have the same advantages, and are not described again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a circuit structure block diagram of a multi-connected control system according to an embodiment of the present invention.
FIG. 2 is a flowchart illustrating steps of a heating control method according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an application example of the heating control method according to the embodiment of the invention;
fig. 4 is a schematic diagram of a heating control device according to an embodiment of the present invention.
Description of reference numerals:
the method comprises the following steps of 1-a multi-split air conditioning system, 2-a temperature acquisition unit, 3-a compressor, 4-a storage, 5-a controller, 6-a heating control device, 7-a first acquisition module, 8-a second acquisition module, 9-an execution module and 10-a control module.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In addition, the partial load mentioned in the embodiment of the present invention refers to a unit operation method of the multi-split air conditioning system 1 during heating, and only some of the indoor units of the multi-split air conditioning system 1 are in an on state during the partial load. The first preset threshold and the second preset threshold mentioned in the embodiments of the present invention refer to reference temperature values for determining whether the outdoor environment temperature is decreased, the first preset threshold is greater than the second preset threshold, and the outdoor environment temperature is divided into three temperature ranges by the first preset threshold and the second preset threshold, that is, the three temperature ranges are greater than the first preset threshold, less than or equal to the first preset threshold, greater than the second preset threshold, and less than or equal to the second preset threshold, and the target condensation temperatures corresponding to the three temperature ranges are sequentially increased. The capacity of the on-line indoor unit mentioned in the embodiment of the present invention refers to the sum of the capacities of each indoor unit in the on-line state in the multi-split air conditioning system 1. The outdoor unit capacity referred to in the embodiments of the present invention refers to the capacity of the outdoor unit in the multi-split air conditioning system 1. The target condensing temperature mentioned in the embodiment of the present invention refers to a saturation temperature corresponding to the exhaust pressure in the multi-split air conditioning system 1.
References to first and second in embodiments of the invention are only used to distinguish one entity or operation from another entity or operation without necessarily requiring or implying any actual such relationship or order between such entities or operations.
The invention provides a multi-split air conditioning system 1 which can improve the heating effect of partial load when the multi-split air conditioning system 1 operates in a heating mode. Referring to fig. 1, fig. 1 is a circuit block diagram of a multi-split air conditioning system 1 according to an embodiment of the present invention. The multi-split air conditioning system 1 comprises an outdoor unit and a plurality of indoor units, wherein the outdoor unit is provided with a temperature acquisition unit 2. The temperature acquisition unit 2 may be a temperature sensor, and the temperature acquisition unit 2 is configured to acquire an outdoor environment temperature of an environment where the outdoor unit is located in real time.
The multi-split air conditioning system 1 further includes a compressor 3, a memory 4, a controller 5, and a heating control device 6. The controller 5 is electrically connected with the temperature acquisition unit 2, the compressor 3 and the memory 4, and the heating control device 6 comprises at least one software functional module which can be stored in the memory 4 in the form of software or firmware (firmware).
The memory 4 may be used to store software programs and units, such as program instruction units corresponding to the heating control device 6 and the heating control method in the embodiment of the present invention, and the controller 5 executes various functional applications and data processing, such as the heating control method provided in the embodiment of the present invention, by operating the software programs and units of the heating control device 6 and the heating control method stored in the memory 4.
The Memory 4 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
First embodiment
Referring to fig. 2, an embodiment of the present invention provides a heat control method. The heating control method may be applied to the multi-split air conditioning system 1. As shown in fig. 2, the heating control method may include the steps of:
and step S101, when the multi-split air conditioning system is detected to be operated at partial load, acquiring the outdoor environment temperature acquired by the temperature acquisition unit.
In the embodiment of the present invention, when the outdoor environment temperature is low, for example, in winter, a user needs to use the multi-split air conditioning system 1 to perform heating, when the multi-split air conditioning system 1 is in the heating mode, it needs to detect whether the multi-split air conditioning system 1 is partially loaded, and if it is detected that the multi-split air conditioning system 1 is partially loaded in the heating mode, the outdoor environment temperature collected by the temperature collection unit 2 disposed on the outdoor unit is obtained.
In the embodiment of the present invention, the method for detecting whether the multi-split air conditioning system 1 is operating at a partial load may include the following three methods:
firstly, when detecting that the multi-split air-conditioning system 1 reaches the target output capacity, judging whether all indoor units are in a starting state, and if only part of the indoor units are in the starting state, judging that the multi-split air-conditioning system 1 is in partial load operation;
secondly, when the fact that the multi-split air-conditioning system 1 reaches the target output capacity is detected, whether the rotating speed of the outdoor unit reaches the maximum set rotating speed of the outdoor unit is judged, and if the rotating speed of the outdoor unit does not reach the maximum set rotating speed of the outdoor unit, partial load operation of the multi-split air-conditioning system 1 is judged;
thirdly, when the fact that the multi-split air-conditioning system 1 reaches the target output capacity is detected, whether the rotating speed of the compressor 3 reaches the maximum set rotating speed of the compressor is judged, and if the rotating speed of the compressor 3 does not reach the maximum set rotating speed of the compressor, partial load operation of the multi-split air-conditioning system 1 is judged.
And S102, acquiring the load rate of the startup indoor unit of the multi-split air conditioning system.
In the embodiment of the present invention, the process of obtaining the load rate of the indoor unit during startup may include: firstly, the capacity of a startup indoor unit and the capacity of an outdoor unit of the multi-split air conditioning system 1 are obtained, and then the proportion of the capacity of the startup indoor unit to the capacity of the outdoor unit is calculated to obtain the load rate of the startup indoor unit.
And step S103, adjusting the target condensation temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load rate of the started indoor unit.
In the embodiment of the invention, on one hand, as the outdoor environment temperature decreases, the indoor heat load increases, and the heat exchange amount is insufficient, so that the target condensation temperature needs to be increased in a segmented manner according to different environment temperatures, the indoor side heat exchange temperature difference is increased, the indoor outlet air temperature is increased, and the heating effect is improved. Meanwhile, considering that the outdoor unit air density increases, the outdoor background noise increases and the unit noise sensitivity decreases with the decrease of the outdoor environment temperature, the target condensing temperature can be properly increased when the outdoor temperature decreases.
On the other hand, when the multi-split air conditioning system 1 is operated under partial load, the reliability of the unit is not influenced by the target condensation temperature when the load factor of the indoor unit is small, so that the target condensation temperature can be properly increased to increase the indoor side heat exchange temperature difference, increase the indoor outlet air temperature and improve the heating effect; meanwhile, when the load factor of the indoor unit is high, the reliability of the unit is affected by the target condensation temperature, so that the target condensation temperature should be correspondingly limited.
Further, as the outdoor environment temperature is reduced, the specific requirements of the user on the heat exchange amount are different, and the bearing degree of the user on the noise is also different, so that the target condensation temperature of the multi-split air conditioning system 1 can be adjusted in a segmented manner as required according to the specific outdoor environment temperature and the load rate of the indoor unit during starting up, and meanwhile, the influence of the noise on the user is combined.
In the embodiment of the present invention, the adjusting the target condensing temperature according to the outdoor ambient temperature and the load factor of the indoor unit may include:
firstly, the outdoor environment temperature is compared with a first preset threshold and a second preset threshold, and the load rate of the started indoor unit is compared with the load rate of the preset indoor unit. Optionally, the first preset threshold is 10 ℃, the second preset threshold is 4 ℃, and the preset indoor unit load factor is [ 50%, 80% ].
Then, when the outdoor environment temperature is greater than a first preset threshold value, i.e. when Tao > a, if the load rate of the started indoor unit is greater than or equal to the preset load rate of the indoor unit, i.e. if LORAnd y, adjusting the target condensation temperature to be a first temperature, and optionally, the first temperature is [48 ℃, 51 DEG C](ii) a If the load rate of the indoor unit is less than the preset load rate of the indoor unit, i.e., if LOR<y, adjusting the target condensing temperature to a second temperature, optionally [51 ℃, 54℃ ]]。
Further, when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, that is, when B is greater than Tao and less than or equal to a, if the load factor of the indoor unit is greater than or equal to the load factor of the indoor unit, that is, if L is greater than or equal to a predetermined load factor of the indoor unitORY, then adjusting the target condensing temperature to a second temperature, optionally, the second temperature is[51℃，54℃](ii) a If the load rate of the indoor unit is less than the preset load rate of the indoor unit, i.e., if LOR<y, the target condensing temperature is adjusted to a third temperature, optionally, the third temperature is [54 ℃, 57 DEG C]。
Further, when the outdoor environment temperature is less than or equal to a second preset threshold value, that is, when Tao is less than or equal to B, if the load rate of the started indoor unit is greater than or equal to the preset load rate of the indoor unit, that is, if L is greater than or equal to B, the load rate of the indoor unit is greater than or equal to LORAnd y, adjusting the target condensation temperature to be a third temperature, and optionally, the third temperature is [54 ℃, 57 DEG C](ii) a If the load rate of the indoor unit is less than the preset load rate of the indoor unit, i.e., if LOR<y, the target condensing temperature is adjusted to a fourth temperature, optionally, the fourth temperature is [57 ℃, 60℃ ]]。
And step S104, controlling the compressor of the multi-split air conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature.
In the embodiment of the invention, according to the specific outdoor environment temperature and the load rate of the startup indoor unit, and simultaneously in combination with the influence of the noise on the user, after the target condensation temperature of the multi-split air-conditioning system 1 is adjusted in a segmented manner as required, the compressor 3 of the multi-split air-conditioning system 1 is controlled to perform frequency up-down according to the adjusted target condensation temperature.
Therefore, when the outdoor environment temperature Tao is greater than A, if the indoor unit load rate L is started upORNot less than y, controlling the compressor 3 according to the target condensation temperature TCtar＝[48℃，51℃]Raising or lowering frequency, if starting up, the load rate L of indoor unitOR<y, then controlling the compressor 3 to follow the target condensing temperature TCtar＝[51℃，54℃]Frequency rising and reducing; when the outdoor environment temperature B is less than Tao and less than A, if the indoor unit is started, the load rate L of the indoor unit is increasedORNot less than y, controlling the compressor 3 according to the target condensation temperature TCtar＝[51℃，54℃]Raising or lowering frequency, if starting up, the load rate L of indoor unitOR<y, then controlling the compressor 3 to follow the target condensing temperature TCtar＝[54℃，57℃]Frequency rising and reducing; when the outdoor environment temperature Tao is less than or equal to B, if the indoor unit is started, the load rate L of the indoor unit is increasedORNot less than y, controlling the compressor 3 according to the target condensation temperature TCtar＝[54℃，57℃]Raising or lowering frequency if the load factor of the indoor unit is startedLOR<y, then controlling the compressor 3 to follow the target condensing temperature TCtar＝[57℃，60℃]And (5) increasing and decreasing the frequency.
Further, to better explain the embodiment of the present invention, the following describes the embodiment of the present invention by using an application example as shown in fig. 3, and as shown in fig. 3, the heating control method provided by the embodiment of the present invention may include the following processes:
s1, it is detected that the multi-split air conditioning system 1 is operating in the heating mode and in partial load operation.
And S2, acquiring the outdoor environment temperature acquired by the temperature acquisition unit 2 corresponding to the outdoor unit.
And S3, acquiring the load rate of the on-line indoor unit of the multi-split air conditioning system 1.
And S4, judging whether the obtained outdoor environment temperature is more than 10 ℃. If it is greater than 10 deg.C, the flow advances to step S5; if not, the flow advances to step S8.
And S5, judging whether the obtained load rate of the starting indoor unit is less than the preset load rate of the indoor unit. If not, the flow advances to step S6; if less, the flow advances to step S7.
S6, adjusting the target condensation temperature to be [48 ℃ and 51 ℃, and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature of [48 ℃ and 51 ℃).
S7, adjusting the target condensation temperature to be 51 ℃ and 54 ℃, and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature to be 51 ℃ and 54 ℃.
And S8, judging whether the obtained outdoor environment temperature is less than 10 ℃ and more than 4 ℃. If the temperature is less than 10 ℃ and more than 4 ℃, the flow proceeds to step S9; if not, the flow advances to step S12.
And S9, judging whether the obtained load rate of the starting indoor unit is less than the preset load rate of the indoor unit. If not, the flow advances to step S10; if less, the flow advances to step S11.
S10, adjusting the target condensation temperature to be 51 ℃ and 54 ℃, and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature to be 51 ℃ and 54 ℃.
S11, adjusting the target condensation temperature to be (54 ℃, 57 ℃), and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature to be (54 ℃, 57 ℃).
And S12, judging whether the obtained outdoor environment temperature is less than 4 ℃. If less than 4 deg.C, the flow advances to step S13; if not less than 4 deg.C, the flow advances to step S2.
And S13, judging whether the obtained load rate of the starting indoor unit is less than the preset load rate of the indoor unit. If not, the flow advances to step S14; if less, the flow advances to step S15.
S14, adjusting the target condensation temperature to be (54 ℃, 57 ℃), and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature to be (54 ℃, 57 ℃).
S15, adjusting the target condensation temperature to be 57 ℃ and 60 ℃, and controlling the compressor 3 to increase and decrease the frequency according to the target condensation temperature to be 57 ℃ and 60 ℃.
According to the heating control method provided by the embodiment of the invention, when the partial load operation of the unit is detected, the target condensation temperature of the multi-split air-conditioning system 1 can be adjusted by acquiring the outdoor environment temperature and the load rate of the startup indoor unit, and the compressor 3 of the multi-split air-conditioning system 1 is controlled to perform frequency increase and decrease according to the adjusted target condensation temperature. Compared with the prior art, the target condensing temperature during partial load operation can be adjusted through the outdoor environment temperature and the load factor of the starting indoor unit, and the frequency of the compressor 3 is controlled to be increased and decreased in a segmented mode according to needs, so that automatic powerful operation of the multi-split air conditioning system 1 is achieved during partial load, the heating effect of partial load in winter is improved, and user experience is improved.
Second embodiment
Referring to fig. 4, a heat control apparatus 6 is provided according to an embodiment of the present invention. The heating control device 6 may be applied to the multi-split air conditioning system 1. As shown in fig. 4, the heating control device 6 may include: a first obtaining module 7, a second obtaining module 8, an executing module 9 and a control module 10.
And the first acquisition module 7 is used for acquiring the outdoor environment temperature acquired by the temperature acquisition unit when the multi-split air conditioning system is detected to run at a partial load.
In the embodiment of the present invention, the first obtaining module 7 may be configured to execute step S101 in the first embodiment.
And the second obtaining module 8 is used for obtaining the load rate of the startup indoor unit of the multi-split air conditioning system.
In the embodiment of the present invention, the second obtaining module 8 may be configured to execute step S102 in the first embodiment.
Optionally, the second obtaining module 8 is specifically configured to: acquiring the capacity of a starting indoor unit and the capacity of an outdoor unit of the multi-split air conditioning system; and calculating the ratio of the capacity of the starting indoor unit to the capacity of the outdoor unit to obtain the load rate of the starting indoor unit.
And the execution module 9 is used for adjusting the target condensation temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load rate of the starting indoor unit.
In the embodiment of the present invention, the executing module 9 may be configured to execute step S103 in the first embodiment.
Optionally, the executing module 9 is specifically configured to: comparing the outdoor environment temperature with a first preset threshold and a second preset threshold, and comparing the load rate of the starting indoor unit with the load rate of a preset indoor unit; when the outdoor environment temperature is greater than a first preset threshold value, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a first temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature; when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a second temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a third temperature; when the outdoor environment temperature is smaller than or equal to a second preset threshold value, if the load rate of the starting indoor unit is larger than or equal to the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a third temperature, and if the load rate of the starting indoor unit is smaller than the load rate of the preset indoor unit, the target condensation temperature is adjusted to be a fourth temperature.
Optionally, the first preset threshold is 10 ℃ and the second preset threshold is 4 ℃.
Optionally, the preset indoor unit load factor is [ 50%, 80% ].
Alternatively, the first temperature is [48 ℃, 51 ℃ ], the second temperature is [51 ℃, 54 ℃ ], the third temperature is [54 ℃, 57 ℃ ], and the fourth temperature is [57 ℃, 60 ℃ ].
And the control module 10 is used for controlling the compressor of the multi-split air conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature.
In the embodiment of the present invention, the control module 10 may be configured to execute step S104 in the first embodiment.
In summary, embodiments of the present invention provide a heating control method and apparatus, and a multi-split air conditioning system. The heating control method and the heating control device can be applied to a multi-split air conditioning system, the multi-split air conditioning system comprises an outdoor unit and a plurality of indoor units, the outdoor unit is provided with a temperature acquisition unit, and the heating control method comprises the following steps: when the multi-split air conditioning system is detected to run at a partial load, acquiring the outdoor environment temperature acquired by a temperature acquisition unit; acquiring the load rate of a starting indoor unit of the multi-split air-conditioning system; adjusting the target condensation temperature of the multi-split air conditioning system according to the outdoor environment temperature and the load rate of the starting indoor unit; and controlling a compressor of the multi-split air conditioning system to increase and decrease the frequency according to the adjusted target condensation temperature. Compared with the prior art, the embodiment of the invention can adjust the target condensation temperature through the outdoor environment temperature and the load rate of the starting indoor unit, and controls the compressor to increase and decrease the frequency in a segmented manner according to needs, thereby realizing the automatic powerful operation of the multi-split air-conditioning system under partial load, improving the heating effect of the partial load in winter and improving the user experience.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The heating control method is applied to a multi-split air conditioning system (1), and is characterized in that the multi-split air conditioning system (1) comprises an outdoor unit and a plurality of indoor units, the outdoor unit is provided with a temperature acquisition unit (2), and the heating control method comprises the following steps:
when the multi-split air conditioning system (1) is detected to run at a partial load, acquiring the outdoor environment temperature acquired by the temperature acquisition unit (2);
acquiring the load rate of the startup indoor unit of the multi-split air conditioning system (1);
comparing the outdoor environment temperature with a first preset threshold and a second preset threshold, and comparing the load rate of the started indoor unit with the load rate of a preset indoor unit;
when the outdoor environment temperature is higher than a first preset threshold value, if the load rate of the starting indoor unit is higher than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a first temperature, and if the load rate of the starting indoor unit is lower than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature;
when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a third temperature;
when the outdoor environment temperature is less than or equal to a second preset threshold value, if the load factor of the starting indoor unit is greater than or equal to the preset indoor unit load factor, the target condensation temperature is adjusted to be a third temperature, and if the load factor of the starting indoor unit is less than the preset indoor unit load factor, the target condensation temperature is adjusted to be a fourth temperature, wherein the first temperature, the second temperature, the third temperature and the fourth temperature are sequentially increased;
and controlling a compressor (3) of the multi-split air-conditioning system (1) to increase and decrease the frequency according to the adjusted target condensation temperature.
2. The heating control method according to claim 1, wherein the first preset threshold value is 10 ℃ and the second preset threshold value is 4 ℃.
3. The heating control method according to claim 1, wherein the preset indoor unit load factor is [ 50%, 80% ].
4. The heating control method according to claim 1, wherein the first temperature is [48 ℃, 51 ℃ ], the second temperature is [51 ℃, 54 ℃ ], the third temperature is [54 ℃, 57 ℃ ], and the fourth temperature is [57 ℃, 60 ℃ ].
5. The heating control method according to claim 1, wherein the step of obtaining the load factor of the on-line indoor unit of the multi-split air conditioning system (1) comprises:
acquiring the capacity of a starting indoor unit and the capacity of an outdoor unit of the multi-split air-conditioning system (1);
and calculating the ratio of the capacity of the starting indoor unit to the capacity of the outdoor unit to obtain the load rate of the starting indoor unit.
6. The utility model provides a heating control device, is applied to many online air conditioning system (1), its characterized in that, many online air conditioning system (1) include off-premises station and a plurality of indoor set, the off-premises station is provided with temperature acquisition unit (2), heating control device (6) include:
the first acquisition module (7) is used for acquiring the outdoor environment temperature acquired by the temperature acquisition unit (2) when the multi-split air conditioning system (1) is detected to run at partial load;
the second acquisition module (8) is used for acquiring the load rate of the startup indoor unit of the multi-split air conditioning system (1);
the execution module (9) is used for comparing the outdoor environment temperature with a first preset threshold and a second preset threshold and comparing the load rate of the starting indoor unit with the load rate of a preset indoor unit;
when the outdoor environment temperature is higher than a first preset threshold value, if the load rate of the starting indoor unit is higher than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a first temperature, and if the load rate of the starting indoor unit is lower than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature;
when the outdoor environment temperature is less than or equal to a first preset threshold and greater than a second preset threshold, if the load rate of the starting indoor unit is greater than or equal to the load rate of the preset indoor unit, adjusting the target condensation temperature to be a second temperature, and if the load rate of the starting indoor unit is less than the load rate of the preset indoor unit, adjusting the target condensation temperature to be a third temperature;
when the outdoor environment temperature is less than or equal to a second preset threshold value, if the load factor of the starting indoor unit is greater than or equal to the preset indoor unit load factor, the target condensation temperature is adjusted to be a third temperature, and if the load factor of the starting indoor unit is less than the preset indoor unit load factor, the target condensation temperature is adjusted to be a fourth temperature, wherein the first temperature, the second temperature, the third temperature and the fourth temperature are sequentially increased;
and the control module (10) is used for controlling the frequency of the compressor (3) of the multi-split air-conditioning system (1) to be increased and decreased according to the target condensation temperature.
7. Heating control device according to claim 6, characterized in that said second acquisition module (8) is particularly adapted to:
acquiring the capacity of a starting indoor unit and the capacity of an outdoor unit of the multi-split air-conditioning system (1);
and calculating the ratio of the capacity of the starting indoor unit to the capacity of the outdoor unit to obtain the load rate of the starting indoor unit.
8. The multi-split air conditioning system is characterized in that the multi-split air conditioning system (1) comprises an outdoor unit and a plurality of indoor units, the outdoor unit is provided with a temperature acquisition unit (2), and the multi-split air conditioning system (1) further comprises:
one or more controllers (5);
a memory (4) for storing one or more programs that, when executed by the one or more controllers (5), cause the one or more controllers (5) to implement the heating control method according to any one of claims 1-5.
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| CN109827303B (en) * | 2019-03-01 | 2021-07-16 | 奥克斯空调股份有限公司 | Temperature adjusting method and device and server |
| CN110030708A (en) * | 2019-03-15 | 2019-07-19 | 天加环境科技(集团)有限公司 | A kind of air-conditioner fan control method |
| CN110081553B (en) * | 2019-05-07 | 2020-08-11 | 珠海格力电器股份有限公司 | Method and device for regulating operating frequency |
| CN110332682B (en) * | 2019-07-25 | 2021-05-14 | 宁波奥克斯电气股份有限公司 | Method and device for adjusting working frequency of compressor and air conditioner |
| CN110906514B (en) * | 2019-11-29 | 2021-12-17 | 四川长虹空调有限公司 | Multi-split capacity control method and air conditioning system |
| CN111121249B (en) * | 2019-12-26 | 2021-12-10 | 宁波奥克斯电气股份有限公司 | Control method and control device of multi-split system and multi-split system |
| CN113834175B (en) * | 2020-06-23 | 2022-10-28 | 青岛海尔空调电子有限公司 | Compressor frequency control method for multi-split air conditioning unit |
| CN112611091B (en) * | 2020-12-22 | 2022-03-29 | 宁波奥克斯电气股份有限公司 | Multi-split air conditioner and control method thereof |
| CN113531827B (en) * | 2021-06-30 | 2023-01-03 | 苏州英维克温控技术有限公司 | Variable frequency air conditioner control method and device, electronic equipment and medium |
| CN114234372B (en) * | 2021-12-15 | 2022-11-01 | 珠海格力电器股份有限公司 | Control method and device of modular multi-split air conditioner, multi-split air conditioner system and storage medium |
| CN114811860B (en) * | 2022-03-28 | 2023-11-24 | 青岛海尔空调电子有限公司 | Control method of multi-split air conditioning system and multi-split air conditioning system |
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| CN101109553A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | Method for limiting inverter compressor maximum frequency according to outdoor environment temperature |
| CN101392968B (en) * | 2007-09-20 | 2011-01-05 | 无锡同方人工环境有限公司 | Large-capacity multiple air conditioner/heat pump units |
| CN101968249B (en) * | 2010-09-09 | 2012-12-19 | 宁波奥克斯电气有限公司 | Method for regulating normal operating frequency of DC inverter compressor |
| CN102418981B (en) * | 2011-11-09 | 2014-01-01 | 青岛海尔空调电子有限公司 | Method for controlling operation of air conditioner in mute mode |
| CN102506490B (en) * | 2011-11-09 | 2013-12-04 | 宁波奥克斯电气有限公司 | Control method for electronic expansion valve of indoor unit during refrigeration of inverter multi-split air conditioner |
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| CN105928065B (en) * | 2016-04-29 | 2019-06-28 | 海信（山东）空调有限公司 | A kind of air-conditioning constant temperature dehumidification method and type constant temperature dehumidifying air conditioner |
| JP6545375B2 (en) * | 2016-05-26 | 2019-07-17 | 三菱電機株式会社 | Heat pump type air conditioner water heater |
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