Enhanced vapor injection control method and device, storage medium and air conditioner

Abstract

The invention discloses an enhanced vapor injection control method and device, a storage medium and an air conditioner, and relates to the technical field of air conditioners, the method comprises the following steps: monitoring the tube temperature of an inner tube of an evaporator, and averaging the tube temperature of the inner tube of the evaporator monitored in a preset time length every preset time length to obtain a tube temperature average value in the preset time length; if the average value of the pipe temperature is within the preset range, the air supplementing flow of enhanced vapor injection is controlled to be maintained as the initial flow; if the average pipe temperature value is smaller than the preset range, the air supply flow is increased step by step till the monitored average pipe temperature value is within the preset range after the air supply flow is increased; and if the average value of the pipe temperature is larger than the preset range, the air supply flow is reduced step by step until the monitored average value of the pipe temperature is within the preset range after the air supply flow is reduced. The low-temperature heating stability of the air conditioner can be improved, and the user experience is improved.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular to a method, device, storage medium and air conditioner for controlling jet enthalpy increase. Background Art

[0002] In the low-temperature heating operation scenario (for example, the outdoor ambient temperature is -30℃~24℃, and the indoor ambient temperature is 0℃~24℃), due to the low outdoor ambient temperature and the poor heat exchange environment of the outdoor unit, the air conditioner using the air source heat pump system uses air as the low-temperature heat source, which will cause a series of heating problems.

[0003] At present, jet enthalpy increase technology is usually used to improve the heating problem of air source heat pump systems under low temperature conditions. However, when using jet enthalpy increase technology, there is often a problem of unstable air supply to the compressor, resulting in poor low-temperature heating stability of the air conditioner and poor user experience. Summary of the invention

[0004] The embodiment of the present application provides an injection enthalpy increase control solution, which can improve the low-temperature heating stability of the air conditioner and enhance the user experience.

[0005] The embodiments of the present application provide the following technical solutions:

[0006] According to one embodiment of the present application, a method for controlling jet enthalpy increase includes: monitoring the tube temperature of the tube inside the evaporator, and, at predetermined time intervals, averaging the tube temperature of the tube inside the evaporator monitored within the predetermined time to obtain the tube temperature average value within the predetermined time; if the tube temperature average value is within a predetermined range, controlling the supplementary air flow rate for jet enthalpy increase to maintain the initial flow rate; if the tube temperature average value is less than the predetermined range, increasing the supplementary air flow rate step by step until the monitored tube temperature average value after the supplementary air flow rate is increased is within the predetermined range; if the tube temperature average value is greater than the predetermined range, reducing the supplementary air flow rate step by step until the monitored tube temperature average value after the supplementary air flow rate is reduced is within the predetermined range.

[0007] In one embodiment, the stepwise increase of the supplementary air flow rate until the average value of the monitored tube temperature after the supplementary air flow rate is increased is within the predetermined range includes: increasing the supplementary air flow rate from an initial flow rate by a first value to obtain a first flow rate; and monitoring a first average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the first flow rate; if the first average value is less than the predetermined range, increasing the supplementary air flow rate from the first flow rate by the first value to obtain a second flow rate; monitoring a second average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the second flow rate; and adjusting the supplementary air flow rate according to the first average value, the second average value and the predetermined range until the monitored average value of the tube temperature is within the predetermined range.

[0008] In one embodiment, the air supply flow rate is adjusted according to the first average value, the second average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range, including: if the second average value is less than the predetermined range and the second average value is greater than the first average value, then entering a slow opening stage until the monitored average value of the pipe temperature is within the predetermined range, wherein in the slow opening stage, the air supply is turned on at intervals of the predetermined time and the air supply flow rate is the second flow rate; if the second average value is less than the predetermined range and the second average value is less than or equal to the first average value, then increasing the air supply flow rate step by step until the monitored average value of the pipe temperature after the air supply flow rate is increased is within the predetermined range; if the second average value is within the predetermined range, then controlling the air supply flow rate for increasing the injection enthalpy is maintained at the second flow rate.

[0009] In one embodiment, the stepwise reduction of the supplementary air flow rate until the average monitored pipe temperature value after the supplementary air flow rate is reduced is within the predetermined range includes: reducing the supplementary air flow rate from an initial flow rate by a second value to obtain a third flow rate; and monitoring a third average value of the pipe temperature in the evaporator within a predetermined time after the supplementary air flow rate is reduced to the third flow rate; if the third average value is greater than the predetermined range, reducing the supplementary air flow rate from the third flow rate by the second value to obtain a fourth flow rate; monitoring a fourth average value of the pipe temperature in the evaporator within a predetermined time after the supplementary air flow rate is reduced to the fourth flow rate; and adjusting the supplementary air flow rate according to the third average value, the fourth average value and the predetermined range until the monitored average pipe temperature value is within the predetermined range.

[0010] In one embodiment, the supplemental air flow rate is adjusted according to the third average value, the fourth average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range, including: if the fourth average value is greater than the predetermined range and the fourth average value is greater than the third average value, the supplemental air flow rate is gradually reduced until the monitored average value of the pipe temperature after reducing the supplemental air flow rate is within the predetermined range; if the fourth average value is greater than the predetermined range and the fourth average value is less than or equal to the third average value, a slow-closing stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein the supplemental air flow rate in the slow-closing stage is the second flow rate and the supplemental air is closed every predetermined time period; if the fourth average value is within the predetermined range, the supplemental air flow rate for controlling the injection enthalpy increase is maintained at the fourth flow rate.

[0011] In one embodiment, monitoring the temperature of the inner tube of the evaporator includes: acquiring sensing data of a temperature sensor disposed at the inner tube of the evaporator; and obtaining the temperature of the inner tube of the evaporator according to the sensing data.

[0012] In one embodiment, the monitoring of the tube temperature of the inner tube of the evaporator includes: monitoring the suction pressure of the compressor suction port through a pressure sensor; and performing conversion processing according to the suction pressure to obtain the tube temperature of the inner tube of the evaporator.

[0013] According to one embodiment of the present application, a jet enthalpy increase control device includes: a memory storing a computer program; and a processor reading the computer program stored in the memory to execute the method described in the embodiment of the present application.

[0014] According to another embodiment of the present application, a storage medium stores a computer program thereon, and when the computer program is executed by a processor of an air conditioner, the air conditioner executes the method described in the embodiment of the present application.

[0015] According to another embodiment of the present application, an air conditioner may include the jet enthalpy increase control device described in the embodiment of the present application.

[0016] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. A processor of an air conditioner reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the air conditioner executes the method provided in various optional implementations described in the embodiments of the present application.

[0017] In an embodiment of the present application, the tube temperature of the tube inside the evaporator is monitored, and, at predetermined time intervals, the tube temperature of the tube inside the evaporator monitored within the predetermined time is averaged to obtain the tube temperature average value within the predetermined time; if the tube temperature average value is within a predetermined range, the supplementary air flow rate for controlling the injection enthalpy increase is maintained at an initial flow rate; if the tube temperature average value is less than the predetermined range, the supplementary air flow rate is increased step by step until the monitored tube temperature average value after the increase in the supplementary air flow rate is within the predetermined range; if the tube temperature average value is greater than the predetermined range, the supplementary air flow rate is reduced step by step until the monitored tube temperature average value after the reduction in the supplementary air flow rate is within the predetermined range.

[0018] With the jet reheat control method of the embodiment of the present application, the appropriate air supply flow rate can be continuously and reliably controlled to ensure that the unit's air supply volume is always at an appropriate and stable air supply flow rate, ensure the long-term operation reliability of low-temperature heating, improve the low-temperature heating stability of the air conditioner, and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 A flow chart of an injection enthalpy control method according to an embodiment of the present application is shown.

[0021] Figure 2 A gas supplement control flow chart according to an embodiment of the present application is shown.

[0022] Figure 3 A gas supplement control flow chart according to another embodiment of the present application is shown.

[0023] Figure 4 A block diagram of an injection enthalpy control device according to an embodiment of the present application is shown.

[0024] Figure 5 A block diagram of an air conditioner according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0025] The present disclosure is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not intended to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than providing all embodiments for implementing the present disclosure. In the absence of conflict, the technical solutions recorded in the embodiments of the present disclosure can be implemented in any combination.

[0026] It should be noted that, in the embodiments of the present disclosure, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a method or apparatus including a series of elements includes not only the elements explicitly recorded, but also includes other elements not explicitly listed, or also includes elements inherent to the implementation of the method or apparatus. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other related elements in the method or apparatus including the element (such as a step in the method or a unit in the apparatus, for example, a unit may be a part of a circuit, a part of a processor, a part of a program or software, etc.).

[0027] For example, the jet enthalpy control method provided in the embodiment of the present disclosure includes a series of steps, but the jet enthalpy control method provided in the embodiment of the present disclosure is not limited to the recorded steps. Similarly, the jet enthalpy control device provided in the embodiment of the present disclosure includes a series of units, but the device provided in the embodiment of the present disclosure is not limited to including the units explicitly recorded, and may also include units required to obtain relevant information or perform processing based on information.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0029] It is understandable that in the specific implementation of this application, relevant data is involved. When the embodiments in this application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of relevant data need to comply with relevant laws, regulations and standards of relevant countries and regions.

[0030] Figure 1 The flowchart of the jet enthalpy control method according to an embodiment of the present application is schematically shown. The execution subject of the jet enthalpy control method can be any control device with processing capabilities, such as an air conditioner, a mobile phone, a computer, a smart watch, and other household appliances. In a specific embodiment of the present application, the control device as the execution subject of the jet enthalpy control method is specifically the air conditioner itself, and the air conditioner specifically performs jet enthalpy control through its control module.

[0031] Jet reheating technology mainly achieves the enthalpy increase effect by adding an additional auxiliary air supply port in the compressor and introducing medium-pressure refrigerant for air supply. Specifically, this technology uses a flash evaporator or economizer to separate gas and liquid, separate part of the intermediate pressure refrigerant, and replenish it into the working chamber of the compressor through the auxiliary air supply port of the compressor for air supply. In this process, the air is compressed and mixed with jet cooling at medium and low pressures, and then compressed normally at high pressure, which increases the exhaust volume of the compressor and thus improves the heating capacity in low-temperature environments. However, if the flow rate of the refrigerant replenished into the working chamber of the compressor (hereinafter referred to as the air supply flow rate) is not appropriate, the air supply to the compressor will be unstable, resulting in poor stability of low-temperature heating of the air conditioner.

[0032] The jet reheat control method of the embodiment of the present application can control the appropriate air supply flow rate into the working chamber of the compressor, ensure that the air supply volume of the unit is always at an appropriate and stable air supply flow rate, ensure the long-term operation reliability of low-temperature heating, and improve the low-temperature heating stability of the air conditioner.

[0033] Specifically, Figure 1As shown, the injection enthalpy increase control method of the embodiment of the present application may include steps S110 to S140.

[0034] Step S110, monitoring the tube temperature of the evaporator tube, and averaging the tube temperature of the evaporator tube monitored within the predetermined time period at intervals to obtain an average tube temperature within the predetermined time period;

[0035] Step S120, if the average pipe temperature is within a predetermined range, maintaining the injection enthalpy-increasing air flow rate at the initial flow rate;

[0036] Step S130, if the average value of the tube temperature is less than the predetermined range, gradually increasing the air supply flow rate until the average value of the tube temperature monitored after the air supply flow rate is increased is within the predetermined range;

[0037] Step S140: If the average value of the tube temperature is greater than the predetermined range, the supplementary air flow rate is gradually reduced until the average value of the tube temperature monitored after the supplementary air flow rate is reduced is within the predetermined range.

[0038] After the air conditioner is turned on, the air supply flow rate for supplying air to the compressor working chamber in the injection enthalpy control can be set as the initial flow rate L. For the evaporator of the air conditioner indoor unit, the temperature of the evaporator tube can be continuously monitored, and the temperature of the evaporator tube monitored within the predetermined time period can be averaged every predetermined time period to obtain the average temperature value ΔT within the predetermined time period.

[0039] During the heating operation of the air conditioner, if the monitored average pipe temperature is within the predetermined range (a to b), the supplementary air flow rate of the injection enthalpy increase is maintained at the initial flow rate L. That is, if the average pipe temperature a≤ΔT≤b, the supplementary air flow rate is maintained at the initial flow rate L.

[0040] If the monitored average tube temperature is less than the predetermined range (i.e., ΔT<a), the air supply flow rate is increased step by step, and the average tube temperature within a predetermined time period is monitored after each increase in the air supply flow rate, until the monitored average tube temperature after a certain increase in the air supply flow rate is within the predetermined range (if the air supply flow rate is LC at this time), then the air supply flow rate for jet enthalpy increase is maintained at the LC.

[0041] If the monitored average tube temperature value is greater than a predetermined range (i.e., ΔT>b), the air supply flow rate is reduced step by step, and the average tube temperature value within a predetermined time period is monitored after each reduction in the air supply flow rate, until the monitored average tube temperature value after a certain reduction in the air supply flow rate is within a predetermined range (if the air supply flow rate is LC at this time), then the air supply flow rate for jet enthalpy increase is maintained at the LC.

[0042] It can be understood that after the injection enthalpy increase supplementary air flow rate is maintained at the initial flow rate L or the LC, the injection enthalpy increase control can be continuously performed according to the above steps.

[0043] With the jet reheat control method of the embodiment of the present application, the appropriate air supply flow rate can be continuously and reliably controlled to ensure that the unit's air supply volume is always at an appropriate and stable air supply flow rate, ensure the long-term operation reliability of low-temperature heating, improve the low-temperature heating stability of the air conditioner, and improve the user experience.

[0044] Described below Figure 1 When performing the jet enthalpy increase control in the embodiment, further optional specific embodiments are provided for each step performed.

[0045] In one embodiment, monitoring the temperature of the inner tube of the evaporator may include: acquiring sensing data of a temperature sensor disposed at the inner tube of the evaporator; and obtaining the temperature of the inner tube of the evaporator according to the sensing data. A temperature sensor is disposed at the inner tube of the evaporator, and sensing data can be obtained by the temperature sensor at the inner tube of the evaporator, and the temperature of the inner tube of the evaporator can be obtained in real time according to the sensing data.

[0046] Furthermore, in one embodiment, the monitoring of the tube temperature of the inner tube of the evaporator may include: monitoring the suction pressure of the compressor suction port through a pressure sensor; and performing conversion processing according to the suction pressure to obtain the tube temperature of the inner tube of the evaporator.

[0047] In this embodiment, the suction pressure of the compressor suction port is monitored in real time by a pressure sensor, and then the suction pressure is converted and processed. The tube temperature of the evaporator inner tube is obtained by reverse conversion of the compressor suction pressure. The tube temperature of the evaporator inner tube takes into account the suction condition of the compressor. The tube temperature of the evaporator inner tube is used in the steps of the embodiment of the present application, which can further ensure that the air supply amount of the unit is always at an appropriate and stable air supply flow rate, thereby further effectively improving the low-temperature heating stability of the air conditioner.

[0048] Furthermore, in one embodiment, the monitoring of the temperature of the inner tube of the evaporator may include: obtaining sensing data of a temperature sensor disposed at the inner tube of the evaporator, and obtaining a first temperature according to the sensing data; monitoring the suction pressure of the suction port of the compressor through a pressure sensor, and obtaining a second temperature according to the suction pressure conversion; and using the average of the first temperature and the second temperature as the temperature of the inner tube of the evaporator. This can further ensure that the air supply volume of the unit is always at a suitable and stable air supply flow rate, thereby further effectively improving the low-temperature heating stability of the air conditioner.

[0049] In one embodiment, see Figure 2, the step of gradually increasing the supplementary air flow rate until the average monitored pipe temperature value after the supplementary air flow rate is increased is within the predetermined range, comprises: step S210, increasing the supplementary air flow rate from an initial flow rate by a first value to obtain a first flow rate; and monitoring a first average value of the pipe temperature of the evaporator within a predetermined time after the supplementary air flow rate is increased to the first flow rate; step S220, if the first average value is smaller than the predetermined range, increasing the supplementary air flow rate from the first flow rate by the first value to obtain a second flow rate; step S230, monitoring a second average value of the pipe temperature of the evaporator within a predetermined time after the supplementary air flow rate is increased to the second flow rate; step S240, adjusting the supplementary air flow rate according to the first average value, the second average value and the predetermined range until the monitored average pipe temperature value is within the predetermined range.

[0050] Specifically, after the air conditioner is turned on, the air supply flow rate for supplying air to the working chamber of the compressor in the injection enthalpy increase control can be set as the initial flow rate L. When the average value of the pipe temperature is monitored to be less than the predetermined range (i.e., ΔT<a) at a certain time, the air supply flow rate is increased from the initial flow rate L by a first value (e.g., K steps) to obtain a first flow rate L1; after increasing to the first flow rate L1 and maintaining it for a predetermined time, the pipe temperature of the evaporator pipe within the predetermined time after increasing to the first flow rate L1 can be monitored and averaged to obtain a first average value ΔT1.

[0051] If the first average value ΔT1 is less than the predetermined range (i.e., ΔT1<a), the supplementary air flow rate is increased from the first flow rate L1 by the first value and then increased to the second flow rate L2. After increasing to the second flow rate L2 and maintaining for a predetermined time, the tube temperature of the evaporator tube within the predetermined time after increasing to the second flow rate L2 can be monitored and averaged to obtain the second average value ΔT2.

[0052] The air supply flow rate is further adjusted based on the first average value ΔT1, the second average value ΔT2 and the predetermined range (a to b) until the monitored average pipe temperature is within the predetermined range. When the average pipe temperature is less than the predetermined range, the air supply flow rate can be reliably and stably controlled.

[0053] Furthermore, adjusting the supplemental air flow rate according to the first average value, the second average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range may specifically include:

[0054] If the second average value is less than the predetermined range and the second average value is greater than the first average value, the slow opening stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein in the slow opening stage, the air supply is opened every predetermined time and the air supply flow rate is the second flow rate;

[0055] If the second average value is less than the predetermined range and the second average value is less than or equal to the first average value, gradually increase the air supplement flow rate until the average value of the pipe temperature monitored after increasing the air supplement flow rate is within the predetermined range;

[0056] If the second average value is within the predetermined range, control the air supplement flow rate of the jet enthalpy increase to be maintained at the second flow rate.

[0057] If the second average value is less than the predetermined range (i.e., ΔT2 < a) and the second average value is greater than the first average value (i.e., ΔT2 > ΔT1), enter the slow-opening stage. In the slow-opening stage, the air supplement is opened every predetermined time duration and the air supplement flow rate is controlled to be the second flow rate until the average value of the pipe temperature monitored is within the predetermined range, then end the slow-opening stage and maintain the air supplement flow rate at the second flow rate for continuous air supplement.

[0058] If the second average value is less than the predetermined range (i.e., ΔT2 < a) and the second average value is less than or equal to the first average value (i.e., ΔT2 ≤ ΔT1), continue to repeat the前述 step of gradually increasing the air supplement flow rate until the average value of the pipe temperature monitored after increasing the air supplement flow rate is within the predetermined range.

[0059] If the second average value is within the predetermined range (i.e., a ≤ ΔT2 ≤ b), control the air supplement flow rate of the jet enthalpy increase to be maintained at the second flow rate L2, and stable air supplement can be achieved.

[0060] In this embodiment, different situations of the first average value ΔT1, the second average value ΔT2 and the predetermined range (from a to b) can be effectively considered comprehensively, and corresponding air supplement control means can be implemented according to different situations, and stable control of the air supplement flow rate can be reliably performed.

[0061] In one embodiment, refer to Figure 3 , the step of gradually decreasing the air supplement flow rate until the average value of the pipe temperature monitored after decreasing the air supplement flow rate is within the predetermined range may include:

[0062] Step S310, decrease the air supplement flow rate from the initial flow rate by a second value to obtain a third flow rate; and monitor the third average value of the pipe temperature inside the evaporator within a predetermined time duration after decreasing to the third flow rate; Step S320, if the third average value is greater than the predetermined range, decrease the air supplement flow rate from the third flow rate by the second value to obtain a fourth flow rate; Step S330, monitor the fourth average value of the pipe temperature inside the evaporator within a predetermined time duration after decreasing to the fourth flow rate; Step S340, adjust the air supplement flow rate according to the third average value, the fourth average value and the predetermined range until the average value of the pipe temperature monitored is within the predetermined range.

[0063] Specifically, after the air conditioner is turned on, the air supply flow rate for supplying air to the working chamber of the compressor in the injection enthalpy control can be set as the initial flow rate L. When the average value of the pipe temperature is monitored to be greater than the predetermined range (i.e., ΔT>a) at a certain time, the air supply flow rate is reduced from the initial flow rate L to a second value (wherein the second value may be the same as or different from the first value in the aforementioned embodiment) to obtain a third flow rate L3; after being reduced to the third flow rate L3 and maintained for a predetermined time, the pipe temperature of the evaporator pipe within the predetermined time after being reduced to the third flow rate L3 can be monitored and averaged to obtain a third average value ΔT3.

[0064] If the third average value ΔT3 is greater than a predetermined range (i.e., ΔT3>a), the supplementary air flow rate is reduced from the third flow rate L3 by a second value, so that the supplementary air flow rate is reduced to a fourth flow rate L4. After being reduced to the fourth flow rate L4, the temperature of the tube in the evaporator within the predetermined time after being reduced to the fourth flow rate L4 can be monitored and averaged to obtain a fourth average value ΔT4.

[0065] The air supply flow rate is further adjusted based on the third average value ΔT3, the fourth average value ΔT4 and the predetermined range (a to b) until the monitored average pipe temperature is within the predetermined range. When the average pipe temperature is greater than the predetermined range, the air supply flow rate can be reliably and smoothly controlled.

[0066] Further, adjusting the supplemental air flow rate according to the third average value, the fourth average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range may specifically include:

[0067] If the fourth average value is greater than the predetermined range and the fourth average value is greater than the third average value, the supplementary air flow rate is gradually reduced until the average value of the pipe temperature monitored after the supplementary air flow rate is reduced is within the predetermined range;

[0068] If the fourth average value is greater than the predetermined range and the fourth average value is less than or equal to the third average value, the slow closing stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein the air supply flow rate in the slow closing stage is the second flow rate and the air supply is closed every predetermined time period;

[0069] If the fourth average value is within the predetermined range, the supplementary air flow rate for controlling the injection enthalpy increase is maintained at the fourth flow rate.

[0070] If the fourth average value is greater than the predetermined range (ie, ΔT4>b) and the fourth average value is greater than the third average value (ie, ΔT4>ΔT3), continue to repeat the aforementioned step of gradually reducing the supplementary air flow until the average value of the pipe temperature monitored after reducing the supplementary air flow is within the predetermined range.

[0071] If the fourth average value is greater than the predetermined range (i.e., ΔT4>b) and the fourth average value is less than or equal to the third average value (i.e., ΔT4≤ΔT3), the slow closing stage is entered. During the slow closing stage, the air supply flow rate is controlled to be maintained at the second flow rate and the air supply is closed once every predetermined period of time until the monitored pipe temperature average value is within the predetermined range. The slow closing stage is ended and the air supply flow rate is maintained at the second flow rate for continuous air supply.

[0072] If the fourth average value is within the predetermined range (ie, a≤ΔT4≤b), the supplementary air flow rate for controlling the injection enthalpy increase is maintained at the fourth flow rate L4, thereby achieving stable supplementary air.

[0073] In this implementation, the different situations of the third average value ΔT3, the fourth average value ΔT4 and the predetermined range (a to b) can be effectively considered, and corresponding air supply control means are executed according to different situations, so that the air supply flow rate can be reliably and stably controlled.

[0074] In addition, the embodiment of the present application also provides a jet enthalpy control device, which can be applied to control equipment. Figure 4 As shown, Figure 4 A block diagram of an injection enthalpy control device according to an embodiment of the present application is shown. Specifically, the injection enthalpy control device 400 may include a processor 401 of one or more processing cores and a memory 402 of one or more computer-readable storage media.

[0075] The processor 401 can load the executable files corresponding to the processes of one or more computer programs into the memory 402 according to the instructions, and the processor 401 can run the computer programs stored in the memory 402, so as to realize the various functions in the embodiments of the aforementioned jet enthalpy control method of the present application.

[0076] For example, the processor 401 may execute the following steps:

[0077] Monitor the tube temperature of the tube in the evaporator, and, at intervals of a predetermined time, average the tube temperature of the tube in the evaporator monitored within the predetermined time to obtain an average tube temperature value within the predetermined time; if the average tube temperature value is within a predetermined range, control the supplementary air flow rate of the jet enthalpy increase to maintain the initial flow rate; if the average tube temperature value is less than the predetermined range, increase the supplementary air flow rate step by step until the average tube temperature value monitored after the increase in the supplementary air flow rate is within the predetermined range; if the average tube temperature value is greater than the predetermined range, reduce the supplementary air flow rate step by step until the average tube temperature value monitored after the reduction in the supplementary air flow rate is within the predetermined range.

[0078] In one embodiment, the stepwise increase of the supplementary air flow rate until the average value of the monitored tube temperature after the supplementary air flow rate is increased is within the predetermined range includes: increasing the supplementary air flow rate from an initial flow rate by a first value to obtain a first flow rate; and monitoring a first average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the first flow rate; if the first average value is less than the predetermined range, increasing the supplementary air flow rate from the first flow rate by the first value to obtain a second flow rate; monitoring a second average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the second flow rate; and adjusting the supplementary air flow rate according to the first average value, the second average value and the predetermined range until the monitored average value of the tube temperature is within the predetermined range.

[0079] In one embodiment, the air supply flow rate is adjusted according to the first average value, the second average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range, including: if the second average value is less than the predetermined range and the second average value is greater than the first average value, then entering a slow opening stage until the monitored average value of the pipe temperature is within the predetermined range, wherein in the slow opening stage, the air supply is turned on at intervals of the predetermined time and the air supply flow rate is the second flow rate; if the second average value is less than the predetermined range and the second average value is less than or equal to the first average value, then increasing the air supply flow rate step by step until the monitored average value of the pipe temperature after the air supply flow rate is increased is within the predetermined range; if the second average value is within the predetermined range, then controlling the air supply flow rate for increasing the injection enthalpy is maintained at the second flow rate.

[0080] In one embodiment, the stepwise reduction of the supplementary air flow rate until the average monitored pipe temperature value after the supplementary air flow rate is reduced is within the predetermined range includes: reducing the supplementary air flow rate from an initial flow rate by a second value to obtain a third flow rate; and monitoring a third average value of the pipe temperature in the evaporator within a predetermined time after the supplementary air flow rate is reduced to the third flow rate; if the third average value is greater than the predetermined range, reducing the supplementary air flow rate from the third flow rate by the second value to obtain a fourth flow rate; monitoring a fourth average value of the pipe temperature in the evaporator within a predetermined time after the supplementary air flow rate is reduced to the fourth flow rate; and adjusting the supplementary air flow rate according to the third average value, the fourth average value and the predetermined range until the monitored average pipe temperature value is within the predetermined range.

[0081] In one embodiment, the supplemental air flow rate is adjusted according to the third average value, the fourth average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range, including: if the fourth average value is greater than the predetermined range and the fourth average value is greater than the third average value, the supplemental air flow rate is gradually reduced until the monitored average value of the pipe temperature after reducing the supplemental air flow rate is within the predetermined range; if the fourth average value is greater than the predetermined range and the fourth average value is less than or equal to the third average value, a slow-closing stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein the supplemental air flow rate in the slow-closing stage is the second flow rate and the supplemental air is closed every predetermined time period; if the fourth average value is within the predetermined range, the supplemental air flow rate for controlling the injection enthalpy increase is maintained at the fourth flow rate.

[0082] In one embodiment, monitoring the temperature of the inner tube of the evaporator includes: acquiring sensing data of a temperature sensor disposed at the inner tube of the evaporator; and obtaining the temperature of the inner tube of the evaporator according to the sensing data.

[0083] In one embodiment, the monitoring of the tube temperature of the inner tube of the evaporator includes: monitoring the suction pressure of the compressor suction port through a pressure sensor; and performing conversion processing according to the suction pressure to obtain the tube temperature of the inner tube of the evaporator.

[0084] Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be completed by a computer program, or by controlling related hardware through a computer program. The computer program may be stored in a computer-readable storage medium and loaded and executed by a processor.

[0085] To this end, an embodiment of the present application further provides a storage medium, in which a computer program is stored. The computer program can be loaded by a processor to execute the steps in any method provided in the embodiment of the present application.

[0086] The storage medium may be a computer-readable storage medium, and the storage medium may include: a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0087] Since the computer program stored in the storage medium can execute the steps in any method provided in the embodiments of the present application, the beneficial effects that can be achieved by the method provided in the embodiments of the present application can be achieved. Please refer to the previous embodiments for details and will not be repeated here.

[0088] In addition, see Figure 5 The embodiment of the present application also provides an air conditioner, the air conditioner 500 may include Figure 5 The shown injection enthalpy control device 400 and other air conditioner modules 600 (such as indoor units and outdoor units, etc.)

[0089] According to another embodiment of the present application, a computer program product or a computer program includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes the method provided in various optional implementations described in the embodiments of the present application.

[0090] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in the present application.

[0091] It should be understood that the present application is not limited to the embodiments that have been described above and shown in the accompanying drawings, but various modifications and changes may be made without departing from the scope thereof.

Claims

1. A method for controlling the enthalpy increase of an injection jet, characterized in that: The method comprises: Monitoring the temperature of the tubes in the evaporator, and, at predetermined time intervals, averaging the temperatures of the tubes in the evaporator monitored within the predetermined time to obtain an average temperature of the tubes within the predetermined time; If the average tube temperature is within a predetermined range, the supplementary air flow rate for controlling the injection enthalpy increase is maintained at the initial flow rate; If the average tube temperature is less than the predetermined range, the air supply flow rate is increased step by step until the average tube temperature monitored after the air supply flow rate is increased is within the predetermined range; If the average tube temperature value is greater than the predetermined range, the supplementary air flow rate is gradually reduced until the average tube temperature value monitored after the supplementary air flow rate is reduced is within the predetermined range.

2. The method according to claim 1, characterized in that The step of gradually increasing the air supply flow rate until the average pipe temperature monitored after the air supply flow rate is increased is within the predetermined range includes: The supplementary air flow rate is increased by a first value from the initial flow rate to obtain a first flow rate; and a first average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the first flow rate is monitored; If the first average value is smaller than the predetermined range, the supplemental gas flow rate is increased from the first flow rate by the first value to obtain a second flow rate; Monitoring a second average value of the tube temperature in the evaporator within a predetermined time after the flow rate is increased to the second flow rate; The air supply flow rate is adjusted according to the first average value, the second average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range.

3. The method according to claim 2, characterized in that The step of adjusting the supplemental air flow rate according to the first average value, the second average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range includes: If the second average value is less than the predetermined range and the second average value is greater than the first average value, the slow opening stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein in the slow opening stage, the air supply is opened every predetermined time and the air supply flow rate is the second flow rate; If the second average value is smaller than the predetermined range and the second average value is smaller than or equal to the first average value, the supplementary air flow rate is gradually increased until the average value of the monitored pipe temperature after the supplementary air flow rate is increased is within the predetermined range; If the second average value is within the predetermined range, the supplementary air flow rate for controlling the injection enthalpy increase is maintained at the second flow rate.

4. The method according to claim 1, characterized in that: The step of gradually reducing the supplementary air flow rate until the average pipe temperature monitored after the supplementary air flow rate is reduced is within the predetermined range includes: The supplementary air flow rate is reduced by a second value from the initial flow rate to obtain a third flow rate; and a third average value of the tube temperature in the evaporator within a predetermined time period after the flow rate is reduced to the third flow rate is monitored; If the third average value is greater than the predetermined range, the supplementary gas flow rate is reduced from the third flow rate by the second value to obtain a fourth flow rate; monitoring a fourth average value of the tube temperature in the evaporator within a predetermined time after the flow rate is reduced to the fourth flow rate; The supplementary air flow rate is adjusted according to the third average value, the fourth average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range.

5. The method according to claim 4, characterized in that The step of adjusting the supplemental air flow rate according to the third average value, the fourth average value and the predetermined range until the monitored average value of the pipe temperature is within the predetermined range includes: If the fourth average value is greater than the predetermined range and the fourth average value is greater than the third average value, the supplementary air flow rate is gradually reduced until the average value of the pipe temperature monitored after the supplementary air flow rate is reduced is within the predetermined range; If the fourth average value is greater than the predetermined range and the fourth average value is less than or equal to the third average value, the slow closing stage is entered until the monitored average value of the pipe temperature is within the predetermined range, wherein the air supply flow rate in the slow closing stage is the second flow rate and the air supply is closed every predetermined time period; If the fourth average value is within the predetermined range, the supplementary air flow rate for controlling the injection enthalpy increase is maintained at the fourth flow rate.

6. The method according to claim 1, characterized in that The monitoring of the temperature of the tubes in the evaporator comprises: Acquiring sensing data of a temperature sensor disposed at an inner tube of the evaporator; The tube temperature of the inner tube of the evaporator is obtained according to the sensing data.

7. The method according to claim 1, characterized in that The monitoring of the temperature of the tubes in the evaporator comprises: Monitor the suction pressure of the compressor suction port through a pressure sensor; The conversion process is performed according to the suction pressure to obtain the tube temperature of the inner tube of the evaporator.

8. A jet enthalpy control device, characterized in that: include: a memory storing a computer program; A processor reads a computer program stored in a memory to execute the method according to any one of claims 1 to 7.

9. A storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor of the air conditioner, the air conditioner is caused to execute the method according to any one of claims 1 to 7.

10. An air conditioner, characterized in that: It comprises the jet enthalpy increase control device as claimed in claim 7.

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