Control method of air conditioner and air conditioning system

Abstract

The application relates to the field of air conditioners, in particular to an air conditioner control method and an air conditioning system, which comprises the following steps: detecting the change of the number of indoor personnel Delta N and the single opening time length t0 of a door; when t2 >= t0 > t1 and Delta N <= N1, keeping the current working power of the air conditioner; when t2 >= t0 > t1 and Delta N > N1, adjusting the working power of the air conditioner; t1 is a first preset time length, t2 is a second preset time length, and N1 is a first preset value; so that the air conditioner can effectively adjust the indoor temperature according to the situation that the door is opened due to personnel entering and leaving.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioners, in particular to a control method of an air conditioner and an air conditioning system. BACKGROUND

[0002] Nowadays, with the continuous development of economy, the air conditioning sector is constantly improving, and the continuous improvement of functions brings the increasing energy consumption year by year. As a large energy-consuming country, China is constantly promoting the application of photovoltaic, reducing the energy consumption rate through photovoltaic function, and also adding a new energy supply way for air conditioning heating system. The unit can be flexibly and time-periodically operated to supply indoor use, avoid the peak of electricity consumption, realize peak-shaving and valley-filling, and reduce electricity cost.

[0003] For indoor cooling or heating, the actual indoor temperature and the set temperature are often considered to adjust the operating power of the air conditioner, and the adjustment of the operating power of the air conditioner only according to the temperature difference between the actual indoor temperature and the set temperature has a lag. When people feel that the temperature is too high or too low, the overall temperature in the room is already too high or too low. At this time, temperature adjustment is needed, which requires a certain length of time, so that the experience of the people is reduced.

[0004] In order to make the adjustment of the air conditioner more quickly, only the change of indoor personnel is considered, and the influence of the opening of the door on the indoor temperature when the personnel enter or exit the indoor through the door is not considered.

[0005] At present, there is no good solution to the above technical problems. SUMMARY

[0006] In order to enable the air conditioner to effectively adjust the indoor temperature according to the situation that the door is opened due to the entry and exit of personnel, the present application provides a control method of the air conditioner and an air conditioning system.

[0007] In one aspect, the present application provides a control method of an air conditioner, which comprises:

[0008] detecting the change ΔN of the number of indoor personnel and the single opening time t0 of the door;

[0009] when t2≥t0>t1 and ΔN≤N1, maintaining the current operating power of the air conditioner;

[0010] when t2≥t0>t1 and ΔN>N1, adjusting the operating power of the air conditioner;

[0011] t1 is a first preset time, t2 is a second preset time, and N1 is a first preset value.

[0012] Preferably,

[0013] When t2≥t0>t1 and ΔN>N1, the method for adjusting the working power of the air conditioner is: first increasing and then decreasing the working power of the air conditioner.

[0014] Preferably, the control method further comprises:

[0015] When ΔN≤N1 and t4≥t0>t3, the working power of the air conditioner is increased.

[0016] When ΔN≤N1 and t0>t4, the preset temperature T1 of the air conditioner and / or the working power of the air conditioner is adjusted.

[0017] t3 is a third preset time length, and t4 is a fourth preset time length, t3>t2.

[0018] Preferably, when ΔN≤N1 and t0>t4, the method for adjusting the preset temperature T1 of the air conditioner and / or the working power of the air conditioner is:

[0019] Step one: adjusting the working power of the air conditioner to the maximum and keeping for a seventh preset time length t7;

[0020] Step two: when T0≠T1, adjusting the preset temperature T1; when T0=T1, the air conditioner keeps the current power.

[0021] Preferably, the control method further comprises:

[0022] When the air conditioner is in the cooling mode, ΔN≤N1, t3≥t0>t2, and the number of people in the room decreases, the air conditioner keeps the current working state.

[0023] When the air conditioner is in the heating mode, ΔN≤N1 and t3≥t0>t2, and the number of people in the room increases, the air conditioner keeps the current working state.

[0024] t3 is a third preset time length.

[0025] Preferably, the control method further comprises:

[0026] Detecting the number n of opening times of the door within a fifth preset time length t5, and detecting the indoor-outdoor temperature difference ΔT in real time,

[0027] When ΔN≤N1, t2≥t0>t1 and n>n1, the working power of the air conditioner is increased.

[0028] When ΔT>T1 and n>n2, the working power of the air conditioner is increased.

[0029] n1 is a first preset number, n2 is a second preset number, and T1 is a first preset temperature value.

[0030] Preferably, the control method further comprises detecting the maximum wind speed V at the door opening when the door is opened,

[0031] When n>n3 and V>V1, the working power of the air conditioner is increased;

[0032] n3 is a third preset number, and V1 is a first preset speed.

[0033] Preferably, the control method further comprises detecting the airflow direction at the door opening while detecting the maximum wind speed V at the door opening when the door is opened.

[0034] The method of increasing the working power of the air conditioner comprises: reducing the indoor fan speed and increasing the compressor working frequency; increasing the indoor fan speed and reducing the compressor working frequency.

[0035] When the airflow flows from the indoor to the outdoor, the indoor fan speed is reduced and the compressor working frequency is increased.

[0036] When the airflow flows from the outdoor to the indoor, the indoor fan speed is increased and the compressor working frequency is reduced.

[0037] Preferably, the method of adjusting the working power of the air conditioner comprises adjusting the compressor working frequency and / or adjusting the indoor fan speed.

[0038] When t0>t2, with the increase of the single opening time t0 of the door, the compressor working frequency is increased and / or the indoor fan speed is increased.

[0039] Preferably, when ΔT>T2, 30s≥t0>5s, Z=Z0+Z1Hz, and / or, R=R0+R1.

[0040] When ΔT>T2, 60s≥t0>30s, Z=Z0+Z2Hz, and / or, R=R0+R2.

[0041] When ΔT>T2, t0>60s, Z=Z0+Z3Hz, and / or, R=R0+R3.

[0042] Z is the actual working frequency of the compressor, Z0 is the preset working frequency of the compressor, the units of Z and Z0 are both hertz, R is the actual speed of the indoor fan, R0 is the preset speed of the indoor fan, the units of R and R0 are both revolutions per second; Z1, Z2 and Z3 are preset change values of the working frequency of the compressor, and Z1

[0043] In another aspect, the present application also provides an air conditioning system adopting the control method of the air conditioner.

[0044] When the indoor personnel changes, the room door will be opened, the room door opening and the personnel quantity change will cause the influence to the indoor temperature; the present application detects the indoor personnel quantity change when the room door opens along with the room door opening time length, simultaneously considers the influence of the room door opening time length and the personnel quantity change to the indoor temperature, can more accurately adjust the indoor temperature, effectively improves the experience degree of the indoor personnel. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 The workflow diagram of the embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical scheme and advantages of the embodiment of the present application clearer, the technical scheme in the embodiment of the present application will be described clearly and completely in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiment of the present application, not all the embodiments. Based on the embodiment in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0047] The terms used in the embodiment of the present application are only for the purpose of describing the specific embodiment, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiment of the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Multiple" generally includes at least two, but does not exclude the case of including at least one.

[0048] It should be understood that the term "and / or" used herein is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship; "first", "second" in this paper are only to distinguish different technical features, and not have the order; "upper", "lower", "front", "rear" in this paper are only to make the position relationship of the technical features more convenient to explain, and have certain meaning only in combination with the actual use situation or the specific position description in the preceding text, and not the absolute position relationship.

[0049] It should be noted that the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the goods or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent to such goods or system. Without more limitation, the element defined by the sentence "including a" does not exclude the existence of other identical elements in the goods or system including the element.

[0050] The application relates to the field of air conditioners, in particular to an air conditioner control method and an air conditioning system.

[0051] Nowadays, with the continuous development of economy, the air conditioner sector is constantly improving, and the increasing energy consumption is brought about by the continuous improvement of functions. As a large energy-consuming country, China is constantly promoting the application of photovoltaics to reduce energy consumption rate, and at the same time, a new energy supply mode is added to the air conditioning heating system. The unit can be flexibly and time-divisionally operated to supply indoor use, avoid the peak of electricity consumption, realize peak-shaving and valley-filling, and reduce the cost of electricity consumption.

[0052] For indoor refrigeration or heating, only the actual temperature of the indoor and the difference between the set temperature are considered to adjust the running frequency of the air conditioner, and the situation of the door being opened due to the entry and exit of personnel is not considered, so that the use experience of the indoor personnel is not good enough.

[0053] In order to enable the air conditioner to effectively adjust the indoor temperature according to the situation of the door being opened due to the entry and exit of personnel, the application provides an air conditioner control method and an air conditioning system.

[0054] The application provides an air conditioner control method, which comprises the following steps:

[0055] detecting the change of the number of indoor personnel and the single opening time length t0 of the door;

[0056] when t2 >= t0 > t1 and Delta N <= N1, maintaining the current working power of the air conditioner;

[0057] when t2 >= t0 > t1 and Delta N > N1, adjusting the working power of the air conditioner;

[0058] t1 is a first preset time length, t2 is a second preset time length, and N1 is a first preset value.

[0059] N1 is artificially set according to the size of the indoor space and the rated power of the air conditioner, N1 can be set to be larger when the space is larger, and N1 can be set to be smaller when the space is smaller;

[0060] t1 and t2 are set according to the actual effect of the indoor space, t1 and t2 can be set to be larger when the single door opening needs to keep the door open for a longer time, and t1 and t2 can be set to be smaller when the single door opening needs to keep the door open for a shorter time; t1 can be 0 at least.

[0061] An infrared thermal imager can be arranged to detect the number of indoor personnel, and a sensor and a timer can be arranged to sense the single opening time length of the door, for example, when the sensor senses that the door is opened or the door shaft rotates by a certain angle, the timer counts the time length.

[0062] The door is opened and people enter and exit. On the one hand, opening of the door causes air inside and outside the room to flow, which changes the indoor temperature. On the other hand, the number of people in the room changes, and the heat of the people also affects the indoor temperature.

[0063] When ΔN≤N1 and t2≥t0>t1, that is, the number of people in the room changes little, the single opening time is also little, the opening of the door and the change of the number of people in the room have little effect on the indoor temperature, and the working power of the air conditioner does not need to be changed. The air conditioner only needs to maintain the current working state.

[0064] When ΔN>N1 and t2≥t0>t1, that is, the number of people in the room changes greatly, the opening of the door has little effect on the indoor temperature, but the change of the number of people has a great effect on the indoor temperature, and the working power of the air conditioner needs to be adjusted.

[0065] Preferably, when t2≥t0>t1 and ΔN>N1, the method for adjusting the working power of the air conditioner is to first increase the working power and then decrease the working power.

[0066] The working power of the air conditioner "first increases and then decreases" includes the following four cases:

[0067] The first case is that the air conditioner is heating and the number of people is increasing. At this time, the air conditioner first increases the power and then decreases the power, and the final heating power of the air conditioner is lower than the heating power before the number of people changes. The reason is that the door is opened, people enter, the indoor heat is lost, and the surface temperature of the external clothing of the human body is low. The air conditioner needs to increase the power to heat and warm the external clothing of the human body as soon as possible. Because the human body itself can also generate a certain amount of heat, the overall heat generation in the room increases after the number of people increases, and the power of the air conditioner needs to be reduced to maintain the constant indoor temperature. The power of the air conditioner after the power is reduced is lower than the power before the power is increased.

[0068] The second case is that the air conditioner is heating and the number of people is decreasing. At this time, the air conditioner first increases the power and then decreases the power, and the final heating power of the air conditioner is higher than the power before the power is increased. The reason is that the door is opened, the number of people in the room is reduced, and the indoor heat is lost. The heating power of the air conditioner needs to be increased to supplement the lost heat and warm the surface clothing of the human body, so as to quickly make the indoor temperature constant. After the door is closed, the loss of indoor heat is reduced, and the heating power of the air conditioner is reduced. Since the total heat generated by the human body itself is reduced, the power of the air conditioner after the power is reduced is still higher than the power before the power is increased.

[0069] The third case is that the air conditioner is cooling and the number of people increases. At this time, the air conditioner first increases the power and then decreases the power of the air conditioner. The final cooling power of the air conditioner is higher than the cooling power before the number of people changes. The reason is that the door is opened, the cold is lost, and the surface clothing temperature of the person who just enters the room is relatively high. The air conditioner increases the power to quickly supplement the lost cold and cool the clothing outside the human body. Because the total heat generated by the human body increases, when the clothing temperature decreases, the cooling power of the air conditioner needs to be reduced again to maintain the constant indoor temperature.

[0070] The fourth case is that the air conditioner is cooling and the number of people decreases. The air conditioner first increases the power and then decreases the power of the air conditioner. The final cooling power of the air conditioner is lower than the cooling power before the number of people changes. The reason is that the number of people in the room decreases, the total heat generated by the human body decreases, and the cooling power of the air conditioner needs to be reduced to maintain the constant indoor temperature.

[0071] Preferably, the control method further comprises:

[0072] When ΔN≤N1 and t4≥t0>t3, the working power of the air conditioner is increased.

[0073] When ΔN≤N1 and t0>t4, the preset temperature T1 of the air conditioner and / or the working power of the air conditioner is adjusted.

[0074] t3 is a third preset time length, t4 is a fourth preset time length, and t3>t2.

[0075] The longer the door opening time, the greater the influence of the mutual flow of indoor and outdoor air on the indoor temperature. Even if the number of people does not change much, when the door opening time exceeds a certain time, the working power of the air conditioner needs to be adjusted. The size of t3 and t4 is set according to the size of the indoor space, the rated power of the air conditioner, and the preset indoor temperature.

[0076] When ΔN≤N1 and t4≥t0>t3, the working power of the air conditioner is increased to maintain the constant indoor temperature.

[0077] When ΔN≤N1 and t0>t4, because the door opening time is too long, the indoor heat or cold loss is relatively large. At this time, the difference between the indoor temperature and the indoor temperature before the door is opened (that is, the original preset temperature) is large. The air conditioner needs higher working power to adjust the indoor temperature. At this time, the preset temperature T1 of the air conditioner is adjusted, which reduces the difference between the real-time temperature in the room and the preset temperature T1, and reduces the energy consumption of the air conditioner. If the original preset temperature is still maintained, the energy consumption of the air conditioner is relatively large.

[0078] The indoor preset temperature adjustment has two modes: heating mode and cooling mode. In heating mode, the outdoor temperature is cold and the indoor temperature is hot. In this mode, the preset temperature is lowered, the temperature difference between indoors and outdoors is reduced, and the power required by the air conditioner to maintain the indoor temperature at the lower preset temperature is reduced, effectively reducing the energy consumption of the air conditioner. In cooling mode, the outdoor temperature is hot and the indoor temperature is cold. In this mode, the preset temperature is higher, the temperature difference between indoors and outdoors is reduced, and the power required by the air conditioner to maintain the indoor temperature at the higher preset temperature is reduced, effectively reducing the energy consumption of the air conditioner.

[0079] Preferably, when ΔN≤N1 and t0>t4, the method for adjusting the preset temperature T1 and / or the operating power of the air conditioner is as follows:

[0080] Step 1: Adjust the air conditioner's operating power to the maximum and maintain it for the seventh preset time t7;

[0081] Step 2: When T0 ≠ T1, adjust the preset temperature T1; when T0 = T1, the air conditioner maintains the current power.

[0082] When the number of people in the room remains relatively constant and the door is open for an extended period at a time, the air conditioner's power is adjusted to maximum and maintained for a certain period to ensure a constant indoor temperature. However, due to air convection between indoors and outdoors, even at maximum power, the air conditioner may not be able to stabilize the indoor temperature. In this case, the preset indoor temperature should be adjusted to allow the air conditioner to operate stably and maintain a constant indoor temperature. If the indoor temperature remains at the preset value even when the air conditioner is operating at maximum power, then the air conditioner's power remains at maximum, and t7 can be manually set according to actual needs. T1 is adjusted as follows: during heating, the preset temperature decreases; during cooling, the preset temperature increases.

[0083] Preferably, the control method further includes:

[0084] When the air conditioner is in cooling mode, ΔN≤N1, t3≥t0>t2, and the number of people in the room decreases, the air conditioner maintains its current operating state.

[0085] When the air conditioner is in heating mode, ΔN≤N1 and t3≥t0>t2, and the number of people in the room increases, the air conditioner maintains its current working state;

[0086] t3 is the third preset duration.

[0087] In cooling mode, when the number of people in the room does not change much (ΔN≤N1), on the one hand, the decrease in the number of people leads to a decrease in the total heat generated by the people in the room, and on the other hand, the opening time of the door increases and remains within the range of t3≥t0>t2. The indoor cooling capacity flows out from the door. At this time, the air conditioner can be kept in its current working state without adjustment. This can ensure the stability of the indoor temperature and avoid the air conditioner repeatedly adjusting its power, which would lead to increased energy consumption and a reduced service life.

[0088] In the heating mode, when the number of indoor people changes little (ΔN≤N1), on the one hand, the increase of the number of people leads to the increase of the total heat generated by the indoor people, and on the other hand, the opening time of the door is increased and kept in the range of t3≥t0>t2, the indoor heat flows out from the door, at this time, the air conditioner can keep the current working state without adjustment, which can ensure the stability of the indoor temperature and avoid the increase of energy consumption and the decrease of the service life of the air conditioner caused by repeated adjustment of the power of the air conditioner.

[0089] Preferably, the control method further comprises:

[0090] detecting the opening number n of the door in the fifth preset time t5, and detecting the indoor-outdoor temperature difference ΔT in real time,

[0091] when ΔN≤N1, t2≥t0>t1 and n>n1, increasing the working power of the air conditioner;

[0092] when ΔT>T1 and n>n2, increasing the working power of the air conditioner;

[0093] n1 is the first preset number, n2 is the second preset number, and T1 is the first preset temperature value.

[0094] When ΔN≤N1, t2≥t0>t1, the number of people and the opening time of the door have little effect on the indoor temperature, but when the opening number of the door in the preset time t5 is greater than n1, the opening and closing of the door speeds up the flow of indoor and outdoor air, which speeds up the change of the indoor temperature, so the working power of the air conditioner needs to be adjusted to ensure the stability of the indoor temperature.

[0095] In the heating mode, the heating power of the air conditioner is increased, and in the cooling mode, the cooling power of the air conditioner is increased.

[0096] When ΔT>T1, that is, the indoor-outdoor temperature difference is large, no matter how the number of indoor people changes and how the opening time of the door changes, as long as the opening number of the door reaches a certain value, the air convection caused by the opening of the door and the heat contained in the air itself are enough to have a great influence on the change of the indoor temperature, the size relationship between n2 and n1 is not absolute, when the indoor-outdoor temperature difference is large, n2 can be less than n1, when the indoor-outdoor temperature difference is small but still greater than T1, n2 can be greater than n1, and n1 and n2 are set artificially according to the actual situation or adjusted in real time according to the change of the indoor-outdoor temperature difference.

[0097] Preferably, the control method further comprises detecting the maximum wind speed V at the door in real time when the door is opened,

[0098] when n>n3 and V>V1, increasing the working power of the air conditioner;

[0099] n3 is a third preset number, and V1 is a first preset speed.

[0100] The wind speed at the door opening here refers to the wind speed generated by the flow from the indoor to the outdoor or the flow from the outdoor to the indoor.

[0101] The influence of the opening of the door on the flow of indoor and outdoor air is also affected by the wind speed V at the door opening. The greater the wind speed, the faster the indoor and outdoor air convection, and the faster the indoor temperature changes. When the number of door openings is greater than the third preset number n3 and the wind speed is greater than the first preset wind speed V1, the working power of the air conditioner needs to be increased. The greater the number of door openings and the greater the wind speed, the greater the increase in the working power of the air conditioner.

[0102] n3 and V1 are manually set according to actual needs or adjusted in time according to the size of the indoor temperature difference.

[0103] Preferably, the control method further comprises: detecting the maximum wind speed V at the door opening while detecting the airflow direction at the door opening when the door is opened.

[0104] The method for increasing the working power of the air conditioner comprises: reducing the indoor fan speed and increasing the compressor working frequency; increasing the indoor fan speed and reducing the compressor working frequency.

[0105] When the airflow flows from the indoor to the outdoor, the indoor fan speed is reduced and the compressor working frequency is increased.

[0106] When the airflow flows from the outdoor to the indoor, the indoor fan speed is increased and the compressor working frequency is reduced.

[0107] The airflow direction at the door opening here refers to the flow direction from the indoor to the outdoor or the flow direction from the outdoor to the indoor.

[0108] When the airflow flows from the indoor to the outdoor, the indoor pressure is reduced, the influence of the indoor fan speed on the indoor air flow is reduced, that is, the influence of the indoor fan speed on the indoor temperature is reduced, and relatively, the influence of the change of the compressor frequency on the indoor temperature is increased. Adjusting the indoor temperature by increasing the compressor working frequency while reducing the indoor fan speed is beneficial to reducing the power consumption of the air conditioner.

[0109] When the airflow flows from the outdoor to the indoor, the indoor pressure is increased, the influence of the indoor fan speed on the indoor air flow is increased, that is, the influence of the indoor fan speed on the indoor temperature is increased, and relatively, the influence of the change of the compressor frequency on the indoor temperature is reduced. Adjusting the indoor temperature by reducing the compressor working frequency while increasing the indoor fan speed is beneficial to reducing the power consumption of the air conditioner.

[0110] The increase or decrease of the indoor temperature caused by the increase or decrease of the indoor fan rotating speed and the compressor working frequency is relative. When the influence of the indoor fan rotating speed on the temperature decreases, the influence of the compressor working frequency on the temperature increases relatively. Similarly, when the influence of the indoor fan rotating speed on the temperature increases, the influence of the compressor working frequency on the temperature decreases.

[0111] Preferably, the method for adjusting the working power of the air conditioner comprises adjusting the compressor working frequency and / or adjusting the indoor fan rotating speed.

[0112] When t0>t2, with the increase of the single opening time t0 of the door, the compressor working frequency increases and / or the indoor fan rotating speed increases.

[0113] When t0>t2, the door opening time is relatively long, and at this time, the door opening time has a relatively large influence on the indoor temperature. The indoor temperature can be adjusted by increasing the compressor working frequency and increasing the indoor fan rotating speed, so as to keep the indoor temperature constant. The longer the door opening time t0 is, the more sufficient the indoor and outdoor gas flow is, and the compressor working frequency and the indoor fan rotating speed need to be increased to keep the indoor temperature constant.

[0114] Preferably, when ΔT>T2, 30s≥t0>5s, Z=Z0+Z1Hz, and / or, R=R0+R1.

[0115] When ΔT>T2, 60s≥t0>30s, Z=Z0+Z2Hz, and / or, R=R0+R2.

[0116] When ΔT>T2, t0>60s, Z=Z0+Z3Hz, and / or, R=R0+R3.

[0117] Z is the actual working frequency of the compressor, Z0 is the preset working frequency of the compressor, the units of Z and Z0 are both hertz, R is the actual rotating speed of the indoor fan, R0 is the preset rotating speed of the indoor fan, the units of R and R0 are both revolutions per second; Z1, Z2 and Z3 are preset change values of the compressor working frequency, and Z1

[0118] T2 is determined according to the difference between the temperature of the indoor detection area and the average temperature of the personnel activity area.

[0119] ΔT can be the average temperature difference, the maximum temperature difference or the minimum temperature difference of the outdoor temperature within the door opening time t0, and can be set artificially. The unit of hertz is “Hz”.

[0120] The sizes of Z1, Z2, Z3, R1, R2 and R3 are related to the door opening time; for example, when the door opening time is greater than 5s, the compressor frequency is adjusted to Z0+Z1Hz and remains unchanged, the indoor unit air speed is adjusted to R=R0+R1 and remains unchanged, when the door continues to open and lasts for more than 30s, the compressor frequency is adjusted to Z0+Z2Hz and remains unchanged, the indoor unit air speed is adjusted to R=R0+R2 and remains unchanged, when the door continues to open and lasts for more than 60s, the compressor frequency is adjusted to Z0+Z3Hz and remains unchanged, the indoor unit air speed is adjusted to R=R0+R3 and remains unchanged; when Z=Z0+Z3Hz, the power of the compressor can be the maximum power or can not be the maximum power, which depends on manual setting; R=R0+R3 can also be the maximum speed or can not be the maximum speed, which also depends on manual setting.

[0121] Further, the sizes of Z1, Z2, Z3, R1, R2 and R3 can be referenced to the size of the indoor and outdoor temperature difference, that is, the greater the temperature difference ΔT, the greater Z1, Z2, Z3, R1, R2 and R3.

[0122] When ΔT>T2, the indoor and outdoor temperature difference is large, when 30s≥t0>5s, it can be considered that the door opening time is relatively long, the indoor temperature is relatively balanced, and the temperature detected by the temperature detector is closer to the temperature of the personnel activity area, at this time, Z=Z0+Z1Hz and R=R0+R1 are increased to improve the adjustment efficiency of the air conditioner on the indoor temperature, so as to stabilize the indoor temperature.

[0123] Further, when 60s≥t0>30s, the indoor and outdoor air flow is further intensified, and it is necessary to further increase the compressor frequency and the speed of the indoor fan, so that Z=Z0+Z2Hz and R=R0+R2; the adjustment efficiency of the air conditioner on the indoor temperature is improved, so as to stabilize the indoor temperature.

[0124] Further, when t0>60s, the door opening time is longer, and the indoor and outdoor air flow is sufficient, by Z=Z0+Z3Hz and R=R0+R3, the working frequency of the compressor and the speed of the indoor fan are further increased, and the adjustment of the air conditioner on the indoor temperature is further improved, so as to stabilize the indoor temperature.

[0125] The application also provides an air conditioning system adopting the control method of the air conditioner.

[0126] The air conditioning system can be powered by a photovoltaic system, an energy storage system and a mains power system, and is taken as an example of heating the indoor to illustrate that the energy storage system is a heat storage system. When there is a heat demand in the indoor, that is, the air conditioning system needs to work for heating, the power generated by the photovoltaic per day is judged, and then the energy supply mode of the air conditioning system is judged. The priority of the energy supply mode is always photovoltaic direct energy supply>heat storage system energy supply>photovoltaic battery energy supply> mains power supply.

[0127] When there is no heat demand in the room, the air conditioning system will continue to run and supply heat to the heat storage system. (At this time, considering that the sunlight in winter is much weaker than in summer, it is not easy to heat the hot water in the heat storage system. By running the air conditioning system, the heat storage system can continuously maintain sufficient heat to supply other equipment.)

[0128] Insert a real-time monitoring module in the air conditioning system to monitor the power supply or heat supply of each section in a timely manner to ensure the normal operation of the system.

[0129] When there is no heat demand in the room:

[0130] 1. In summer, photovoltaic will be used to store heat in the heat storage system first, and in winter, heat will be stored in the heat storage system through the operation of the air conditioning system.

[0131] 2. When the heat storage system reaches saturation, the photovoltaic power will be stored in the battery for energy storage.

[0132] When the air conditioning heating system is running:

[0133] If it is a sunny day, the air conditioning system mainly has the following energy or heat supply methods.

[0134] 1. When the air conditioning heating system is in working condition, photovoltaic power is used to supply energy directly through the inverter to ensure the normal operation of the heating system.

[0135] 2. When the air conditioning heating system is in working condition, if the photovoltaic power is not enough to make the air conditioning heating system run normally, the battery and photovoltaic will work together to supply energy to ensure the normal operation of the air conditioning heating system.

[0136] 3. When the photovoltaic power and the battery are not enough to maintain the normal operation of the air conditioning system, the photovoltaic, heat storage system will work together to ensure the normal operation of the air conditioning system.

[0137] 4. When the air conditioning heating system is in working condition, if the photovoltaic power and the battery are not enough to maintain the normal operation of the air conditioning system, the photovoltaic, battery, and heat storage system will work together to ensure the normal operation of the air conditioning system.

[0138] 5. When the air conditioning heating system is in working condition, if the photovoltaic does not work, the heat storage system will work alone to ensure the normal operation of the air conditioning system.

[0139] 6. When the air conditioning heating system is in working condition, if the photovoltaic does not work, the battery will work alone to ensure the normal operation of the air conditioning system.

[0140] 7、When the air conditioning heating system is in working state, if the photovoltaic does not work, the heat storage system or the battery alone is insufficient to maintain the normal operation of the air conditioning system, the battery and the heat storage system work together to ensure the normal operation of the air conditioning system;

[0141] 8、When the air conditioning heating system is in working state, the photovoltaic generated power is insufficient to maintain the normal operation of the air conditioning system, and the battery and the heat storage system energy is exhausted, then immediately convert to use the power grid power supply to ensure the normal operation of the air conditioning system.

[0142] The above working mode mainly exists as follows 8 kinds of heating mode (the photovoltaic direct energy supply heating effect is better than the heat storage battery and the heat storage system heating effect):

[0143] 1、100% photovoltaic energy supply heating;

[0144] 2、100% battery energy supply heating;

[0145] 3、100% heat storage system heating;

[0146] 4、50% photovoltaic energy supply heating, 50% battery energy supply heating;

[0147] 5、50% photovoltaic energy supply heating, 50% heat storage system heating;

[0148] 6、50% battery energy supply heating, 50% heat storage system heating;

[0149] 7、33% photovoltaic energy supply heating, 33% battery energy supply heating, 33% heat storage system heating;

[0150] 8、100% power grid power supply heating.

[0151] The above only for the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement within the spirit and principle of the present application, should be included in the protection scope of the present application. The above only is the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, can make several improvements and variations, these improvements and variations should be considered as the protection scope of the present application.

Claims

1. A control method of an air conditioner, characterized by, The control method comprises: detecting the change of the number of indoor personnel ΔN and the single opening time t0 of the door; when t2≥t0>t1 and ΔN≤N1, maintaining the current working power of the air conditioner; when t2≥t0>t1 and ΔN>N1, adjusting the working power of the air conditioner; t1 is a first preset time, t2 is a second preset time, and N1 is a first preset value; when t2≥t0>t1 and ΔN>N1, the method for adjusting the working power of the air conditioner is: first increasing and then decreasing the working power of the air conditioner; The control method further comprises: when ΔN≤N1 and t4≥t0>t3, increasing the working power of the air conditioner; when ΔN≤N1 and t0>t4, adjusting the preset temperature T1 of the air conditioner and / or the working power of the air conditioner; t3 is a third preset time, t4 is a fourth preset time, and t3>t2; when ΔN≤N1 and t0>t4, the method for adjusting the preset temperature T1 of the air conditioner and / or the working power of the air conditioner is: Step 1: adjusting the working power of the air conditioner to the maximum and maintaining for a seventh preset time t7; Step 2: when T0≠T1, adjusting the preset temperature T1; when T0=T1, the air conditioner maintains the current power; T0 is the real-time indoor temperature.

2. The control method of the air conditioner according to claim 1, characterized by, The control method further comprises: when the air conditioner is in the cooling mode, ΔN≤N1, t3≥t0>t2, and the number of indoor personnel decreases, the air conditioner maintains the current working state; when the air conditioner is in the heating mode, ΔN≤N1 and t3≥t0>t2, and the number of indoor personnel increases, the air conditioner maintains the current working state; t3 is a third preset time.

3. The control method of the air conditioner according to claim 1, wherein The control method further comprises: detecting the opening times n of the door within a fifth preset time t5, and detecting the real-time indoor-outdoor temperature difference ΔT, when ΔN≤N1, t2≥t0>t1 and n>n1, increasing the working power of the air conditioner; when ΔT>T1 and n>n2, increasing the working power of the air conditioner; n1 is a first preset number, n2 is a second preset number, and T1 is a first preset temperature value.

4. The control method of the air conditioner according to claim 3, characterized by, The control method further comprises detecting the maximum wind speed V at the door opening when the door is opened, when n>n3 and V>V1, increasing the working power of the air conditioner; n3 is a third preset number, and V1 is a first preset speed.

5. The control method of the air conditioner according to claim 4, characterized by, The control method further comprises: detecting the maximum wind speed V at the door opening when the door is opened and detecting the airflow direction at the door opening; The method for increasing the working power of the air conditioner comprises: decreasing the indoor fan speed and increasing the compressor working frequency; increasing the indoor fan speed and decreasing the compressor working frequency; when the airflow flows from the indoor to the outdoor, decreasing the indoor fan speed and increasing the compressor working frequency; when the airflow flows from the outdoor to the indoor, increasing the indoor fan speed and decreasing the compressor working frequency.

6. The control method of the air conditioner according to claim 1, wherein The method for adjusting the working power of the air conditioner comprises: adjusting the compressor working frequency and / or adjusting the indoor fan speed; when t0>t2, with the increase of the single opening time t0 of the door, the compressor working frequency is increased and / or the indoor fan speed is increased.

7. The control method of the air conditioner according to claim 6, wherein When detecting the single opening time t0 of the house door, the indoor and outdoor temperature difference ΔT is also detected; When ΔT>T2, 30s≥t0>5s, Z=Z0+Z1Hz, and / or, R=R0+R1; When ΔT>T2, 60s≥t0>30s, Z=Z0+Z2Hz, and / or, R=R0+R2; When ΔT>T2, t0>60s, Z=Z0+Z3Hz, and / or, R=R0+R3; Z is the actual working frequency of the compressor, Z0 is the preset working frequency of the compressor, the units of Z and Z0 are both hertz, R is the actual rotating speed of the indoor unit fan, R0 is the preset rotating speed of the indoor unit fan, and the units of R and R0 are both revolutions per second; Z1, Z2 and Z3 are preset change values of the working frequency of the compressor, and Z1 8. An air conditioning system characterized by, The control method of the air conditioner according to any one of claims 1-7 is adopted.

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