阅读说明：本技术 一种空调器制冷控制方法及装置、空调器 (Air conditioner refrigeration control method and device and air conditioner ) 是由 宋磊 刘合心 张稳 于 2021-07-12 设计创作，主要内容包括：本发明提供了一种空调器制冷控制方法及装置、空调器。所述空调器制冷控制方法包括：控制空调器为制冷模式；获取室内环境温度值T-(H)和设定温度值T-(S)；在T-(S)-T-(b)＜T-(H)≤T-(S)+T-(a)时,根据所述T-(S)控制电子膨胀阀的开度；其中,所述T-(a)为第一设定温度阈值,所述T-(b)为第二设定温度阈值。解决了空调器在制冷模式下存在室内环境温度波动较大的问题。(The invention provides an air conditioner refrigeration control method and device and an air conditioner. The air conditioner refrigeration control method comprises the following steps: controlling the air conditioner to be in a refrigeration mode; obtaining indoor environment temperature value T H And a set temperature value T S (ii) a At T S ‑T b ＜T H ≤T S +T a According to the T S Controlling the opening degree of the electronic expansion valve; wherein, T is a For a first set temperature threshold, T b The second set temperature threshold. The problem that the air conditioner has large indoor environment temperature fluctuation in a refrigeration mode is solved.)

1. A refrigeration control method of an air conditioner is characterized by comprising the following steps:

controlling the air conditioner to be in a refrigeration mode;

obtaining indoor environment temperature value T_HAnd a set temperature value T_S；

At T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

2. The air conditioner refrigeration control method as claimed in claim 1, wherein according to said T_SControlling an opening degree of an electronic expansion valve, comprising:

calculating an opening adjustment valueWherein, theAn indoor ambient temperature value obtained for the current time, saidThe temperature value of the indoor environment obtained at the previous moment, K_aValue is between 3 and 10, K_bThe value is between 5 and 15;

and changing the opening degree of the electronic expansion valve according to the delta E.

3. The air conditioner refrigeration control method as claimed in claim 2, wherein varying the opening degree of the electronic expansion valve in accordance with the Δ E comprises:

when the delta E is a positive value, keeping the opening degree of the electronic expansion valve unchanged;

and when the delta E is a negative value, reducing the opening degree of the electronic expansion valve according to the delta E.

4. The air conditioner refrigeration control method as claimed in claim 1, further comprising:

at T_S-T_b＜T_H≤T_S+T_aThen, the exhaust temperature value T of the air conditioner is obtained_D；

At T_d＜T_DAccording to the T_DControlling the opening degree of the electronic expansion valve; wherein, T is_dIs an exhaust temperature threshold.

5. The air conditioner refrigeration control method as claimed in claim 4, wherein according to said T_DControlling the opening degree of the electronic expansion valve, comprising:

calculating an opening adjustment valueWherein, theExhaust temperature value obtained for the current timeSaidThe exhaust temperature value obtained for the previous moment, K_eThe value is between 0.5 and 4, and K is_fThe value is between 2 and 10;

and changing the opening degree of the electronic expansion valve according to the delta E.

6. The air conditioner refrigeration control method as claimed in claim 5, wherein the opening degree of the electronic expansion valve is changed in accordance with the Δ E; the method comprises the following steps:

when the delta E is a positive value, increasing the opening degree of the electronic expansion valve according to the delta E;

and when the delta E is a negative value, keeping the opening degree of the electronic expansion valve unchanged.

7. The air conditioner refrigeration control method as claimed in claim 1, further comprising:

at T_H≤T_S-T_bWhen the air conditioner is started, controlling the air conditioner to stop;

at T_S+T_a＜T_HAnd when the air conditioner works, controlling the air conditioner to normally run.

8. The air conditioner refrigeration control method as claimed in claim 1, further comprising:

at T_S-T_b＜T_H≤T_S+T_aAnd when the protection control is triggered, controlling the air conditioner to execute the protection control.

9. An air conditioner refrigeration control device, characterized by comprising:

the refrigeration module is used for controlling the air conditioner to be in a refrigeration mode;

an obtaining module for obtaining the indoor environment temperature value T_HAnd a set temperature value T_S；

Control module for controlling the operation of the motor at T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

10. An air conditioner comprising a memory storing a computer program and a package IC, wherein the computer program is read by the package IC and executed, and the air conditioner implements the air conditioner cooling control method according to any one of claims 1 to 8.

Technical Field

The invention relates to the technical field of refrigeration of air conditioners, in particular to a refrigeration control method of an air conditioner, a refrigeration control device of the air conditioner and the air conditioner.

Background

When part of indoor units of the multi-split air conditioner are under starting load, especially under single-machine load; since the outdoor unit has a large output capacity, the indoor unit is likely to be stopped at a high temperature. However, in order to ensure the stability of the indoor ambient temperature, the precise temperature control of the indoor ambient temperature can be realized by generally reducing the opening degree of the electronic expansion valve of the indoor unit and reducing the frequency of the compressor, so that the air conditioner is in a state that the temperature reaches the temperature but the unit does not stop.

In fact, when the air conditioner is in a cooling mode and is in a temperature-reaching state but the unit is not stopped, the problem that the fluctuation of the indoor environment temperature is large due to the fact that the opening degree of the electronic expansion valve is periodically increased and decreased exists.

Disclosure of Invention

The invention can solve the problem that the air conditioner has large indoor environment temperature fluctuation in the refrigeration mode.

In order to solve the above problem, an embodiment of the present invention provides a refrigeration control method for an air conditioner, including: controlling the air conditioner to be in a refrigeration mode; obtaining indoor environment temperature value T_HAnd a set temperature value T_S(ii) a At T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

Compared with the prior art, the technical scheme has the following technical effects: the air conditioner satisfies T_S-T_b＜T_H≤T_S+T_aDetermining that the air conditioner is in a state of reaching the temperature or approaching the temperature but not stopping; according to the T_SThe opening degree of the electronic expansion valve is controlled to solve the problem that the opening degree of the electronic expansion valve fluctuates periodically to cause large indoor temperature fluctuation when the air conditioner is in the stateAnd instability.

In one embodiment of the invention, the T is determined according to_SControlling an opening degree of an electronic expansion valve, comprising: calculating an opening adjustment valueWherein, theAn indoor ambient temperature value obtained for the current time, saidThe temperature value of the indoor environment obtained at the previous moment, K_aValue is between 3 and 10, K_bThe value is between 5 and 15; and changing the opening degree of the electronic expansion valve according to the delta E.

The technical effect achieved by adopting the technical scheme is as follows: according to the variation of indoor environment temperatureThe difference value between the indoor environment temperature value and the set temperature value is used as a target, and the opening degree adjustment value is determined; therefore, the indoor temperature is controlled to be stable by adjusting the opening degree of the electronic expansion valve.

In one embodiment of the present invention, changing the opening degree of the electronic expansion valve according to the Δ E includes: when the delta E is a positive value, keeping the opening degree of the electronic expansion valve unchanged; and when the delta E is a negative value, reducing the opening degree of the electronic expansion valve according to the delta E.

The technical effect achieved by adopting the technical scheme is as follows: when Δ E is a positive value, it means that the opening degree needs to be increased, but the current opening degree is maintained because the air conditioner is at or near the temperature reached state and the electronic expansion valve is in a state of tending to close. And when the delta E is negative, the opening degree needs to be reduced, and the trend of closing is just met, so that the opening degree is reduced.

In one aspect of the inventionIn an embodiment, the air conditioner refrigeration control method further includes: at T_S-T_b＜T_H≤T_S+T_aThen, the exhaust temperature value T of the air conditioner is obtained_D(ii) a At T_d＜T_DAccording to the T_DControlling the opening degree of the electronic expansion valve; wherein, T is_dIs an exhaust temperature threshold.

The technical effect achieved by adopting the technical scheme is as follows: when the air conditioner is in a temperature reaching state or a temperature reaching state, the electronic expansion valve is in a trend of waiting to be closed; if the opening degree of the electronic expansion valve is too small, the exhaust temperature value T is caused_DToo high, while at the T_DExceeds the T_dAnd adjusting the opening degree of the electronic expansion valve to avoid overhigh exhaust temperature.

In one embodiment of the invention, the T is determined according to_DControlling the opening degree of the electronic expansion valve, comprising: calculating an opening adjustment valueWherein, theFor the exhaust temperature value obtained at the present moment, saidThe exhaust temperature value obtained for the previous moment, K_eThe value is between 0.5 and 4, and K is_fThe value is between 2 and 10; and changing the opening degree of the electronic expansion valve according to the delta E.

The technical effect achieved by adopting the technical scheme is as follows: with the said T_dTo the target, according to the T_DAmount of change of (c), the T_DAnd said T_dThe opening degree is adjusted to avoid the problem that the electronic expansion valve is forcibly opened due to overhigh exhaust temperature.

In one embodiment of the invention, the opening degree of the electronic expansion valve is changed according to the Δ E; the method comprises the following steps: when the delta E is a positive value, increasing the opening degree of the electronic expansion valve according to the delta E; and when the delta E is a negative value, keeping the opening degree of the electronic expansion valve unchanged.

The technical effect achieved by adopting the technical scheme is as follows: in this case, the opening degree needs to be increased to lower the exhaust gas temperature. Therefore, the delta E is a positive value, and the opening degree is increased according to the delta E, so that the requirement is met; and if the delta E is a negative value, the current opening degree is maintained.

In one embodiment of the present invention, the air conditioner cooling control method further includes: at T_H≤T_S-T_bWhen the air conditioner is started, controlling the air conditioner to stop; at T_S+T_a＜T_HAnd when the air conditioner works, controlling the air conditioner to normally run.

In one embodiment of the present invention, the air conditioner cooling control method further includes: at T_S-T_b＜T_H≤T_S+T_aAnd when the protection control is triggered, controlling the air conditioner to execute the protection control.

The technical effect achieved by adopting the technical scheme is as follows: protection control is preferentially executed, and the problems that the exhaust temperature is too high due to untimely opening adjustment of the electronic expansion valve and the indoor temperature is unstable due to periodic fluctuation of the electronic expansion valve are solved.

On the other hand, the embodiment of the invention also provides a refrigeration control device of an air conditioner, which comprises: the refrigeration module is used for controlling the air conditioner to be in a refrigeration mode; an obtaining module for obtaining the indoor environment temperature value T_HAnd a set temperature value T_S(ii) a Control module for controlling the operation of the motor at T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

In another aspect, an embodiment of the present invention further provides an air conditioner, including a memory storing a computer program and a package IC, where the computer program is read by the package IC and executed by the package IC, and the air conditioner implements the air conditioner refrigeration control method according to any one of the above embodiments.

In summary, the above embodiments of the present application may have at least one or more of the following advantages or benefits: i) the problem of large and unstable indoor temperature fluctuation caused by periodic fluctuation of the opening of the electronic expansion valve is solved; ii) controlling an electronic expansion valve according to the rise and fall of the indoor temperature or the exhaust temperature by adopting a PI regulation formula so as to regulate the indoor temperature or the exhaust temperature; iii) when the temperature is reached or is about to reach the temperature state, the opening degree of the electronic expansion valve is controlled to be reduced, so that the indoor temperature can reach a set temperature value or reach the temperature stop temperature, and the indoor comfort is improved; iv) when the temperature is reached or is about to reach the temperature state, the opening degree of the electronic expansion valve can be controlled to be increased, and the overhigh exhaust temperature is avoided.

Drawings

Fig. 1 is a schematic flow chart of a refrigeration control method for an air conditioner according to a first embodiment of the present invention.

Fig. 2 is a block diagram of a refrigeration control device 100 of an air conditioner according to a second embodiment of the present invention.

Fig. 3 is a block diagram of an air conditioner 200 according to a third embodiment of the present invention.

Fig. 4 is a block diagram of a readable storage medium 300 according to a fourth embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

[ first embodiment ] A method for manufacturing a semiconductor device

Referring to fig. 1, a flowchart of a refrigeration control method for an air conditioner according to a first embodiment of the present invention is shown. The air conditioner refrigeration control method includes, for example:

and S10, controlling the air conditioner to be in a cooling mode.

The user can control the air conditioner to be in a cooling mode, and the air conditioner can also be operated in other modes for cooling.

S20, obtaining indoor environment temperature value T_HAnd a set temperatureValue T_S。

The indoor environment temperature value T can be obtained through a temperature sensor on the indoor unit_HSaid set temperature value T_SThe expected temperature value set for the user, namely the temperature value which the user expects to reach indoors.

S30, at T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

Upon detection of said T_HWhen the above conditions are met, the air conditioner is in a state of reaching the temperature or about to reach the temperature, but the air conditioner is still in a state of not stopping the machine. At this time, the opening degree of the electronic expansion valve is controlled by the T_SThe indoor temperature is adjusted for the target. The problem of large indoor temperature fluctuation caused by the periodical change of the opening degree when the air conditioner is in the state is solved.

Wherein, T is_aThe value is between 0 and 2 ℃, and T can be set_a1 ℃, although other temperature values greater than 0 ℃ may be set; the T is_bThe value is between 0 and 2 ℃, and T can be set_bOf course, other temperature values greater than 0 ℃ may be set at 1 ℃.

In an embodiment, step S30 includes, for example, a process of controlling the opening degree of the electronic expansion valve, specifically:

in the case of step S30, an indoor environment temperature value is periodically obtained, an opening degree adjustment value Δ E is calculated according to a variation trend of the indoor environment temperature, and then the opening degree of the electronic expansion valve is controlled according to the Δ E.

For example, the indoor ambient temperature value may be acquired at 30 second intervals. Wherein, the indoor temperature value obtained in the current period (which can also be understood as the current time) isThe indoor temperature value obtained in the previous cycle (previous time) isAccording to the formulaThe Δ E can be calculated. Wherein, K is_aThe value is 3-10, and K can be set_a(ii) 5; said K_bThe value is between 5 and 15, and K can be set_b＝10。

In the case of step S30, since the air conditioner is in the temperature-reached state or the temperature-to-be-reached state, the electronic expansion valve is in a state tending to be closed, and it is generally necessary to decrease the opening degree of the electronic expansion valve. Therefore, when the calculated Δ E is a positive value, the opening degree is maintained; and when the calculated delta E is a negative value, reducing the opening degree of the electronic expansion valve according to the delta E.

In this embodiment, if the air conditioner triggers protection control, the air conditioner is controlled to preferentially execute a protection control program, which is not described herein again.

In another embodiment, the air conditioner refrigeration control method further includes, for example: at T_S-T_b＜T_H≤T_S+T_aThen, the exhaust temperature value T of the air conditioner is obtained_D(ii) a If said T is_DIf the opening degree is too large, the opening degree of the electronic expansion valve needs to be controlled to reduce the T_D. For example, an exhaust gas temperature threshold T may be set_dAt T_d＜T_DWhile controlling the opening degree to decrease the T_D(ii) a Wherein, T is_dThe value is between 92 ℃ and 100 ℃, and T can be set_d＝95℃。

In this embodiment, the exhaust temperature value may be periodically obtained, the opening degree adjustment value Δ E is calculated according to a variation trend of the exhaust temperature, and the opening degree of the electronic expansion valve is controlled according to the Δ E.

For example, the exhaust temperature value may be acquired at 30 seconds intervals, and the exhaust temperature value acquired at the current period (which may also be understood as the current time) isThe exhaust temperature value obtained in the previous cycle (previous time) isAccording to the formulaThe Δ E can be calculated. Wherein, K is_eThe value is between 0.5 and 4, and K can be set_e1 is ═ 1; said K_fThe value is between 2 and 10, and K can be set_f＝3。

In this case, although the air conditioner is in a temperature reaching state or a state about to reach the temperature, the electronic expansion valve tends to be closed, and the opening degree of the electronic expansion valve generally needs to be reduced; however, due to the exhaust temperature valueToo large, which may cause the opening degree of the electronic expansion valve to periodically open or close, causing fluctuations in room temperature, requires an increase in the opening degree to lower the exhaust gas temperature. Therefore, when the Δ E is calculated to be a negative value, the opening degree is maintained unchanged; and when the calculated delta E is a positive value, the opening degree of the electronic expansion valve is increased according to the delta E.

In this embodiment, the process of step S30 is executed again until the exhaust temperature is detected to be less than 90 ℃, which is not described herein again.

In this embodiment, if the air conditioner triggers protection control, the air conditioner is controlled to preferentially execute a protection control program, which is not described herein again.

In a specific embodiment, the air conditioner refrigeration control method, for example, further includes: when said T is_HThe condition T described in step S30 is not satisfied_S-T_b＜T_H≤T_S+T_aAnd when the air conditioner is started, the air conditioner is controlled to quit controlling the electronic expansion valve. Specifically, at least the following two cases are included:

situation one, inAfter the air conditioner performs the process of the step S30 once, the T_HSatisfy T_H≤T_S-T_bAnd at the moment, the air conditioner meets the stop condition and is controlled to stop.

In case two, after the air conditioner performs the process of the step S30 once, the T_HSatisfy T_S+T_a＜T_HAnd at the moment, the air conditioner is controlled to normally run for refrigeration due to higher indoor temperature.

The following describes an embodiment of the present invention in detail, taking an air conditioner of a certain model as an example to execute the above air conditioner refrigeration control method:

user setting indoor set temperature value T_SIs 20 ℃; the air conditioner sets a first set temperature threshold T_aIs 1 ℃, and a second set temperature threshold value T is set_bIs 1 ℃. The air conditioner can periodically acquire the indoor environment temperature, and at least has the following three control modes in each period according to the indoor environment temperature:

in the first mode, the air conditioner is normally controlled. Specifically, when the obtained indoor environment temperature is 24 ℃, the temperature is more than T_S+T_a(21 ℃ C.); since the indoor ambient temperature has not yet reached the T_SOr the temperature of the air conditioner does not reach the temperature of the warm stop, so that the air conditioner is normally controlled to continue to run for cooling.

In a second mode, the air conditioner is in shutdown control. Specifically, when the indoor ambient temperature is 19 ℃, the temperature is less than or equal to T_S-T_b(19 ℃ C.); because the indoor environment temperature is less than or equal to T_SOr the temperature reaching the temperature of the warm stop is met, and therefore the air conditioner is controlled to stop.

In a third mode, the air conditioner is temperature control and/or exhaust temperature control. Specifically, when the indoor environment temperature is obtained to be 20 ℃, the temperature is more than T_S-T_b(19 ℃) of T or less_S+T_a(21 ℃ C.); at this time, the exhaust temperature of the air conditioner can be obtained, and the exhaust temperature is compared with the exhaust temperature threshold T set by the air conditioner_d＝9The size relationship at 5 ℃ is at least two of the following cases:

situation one

For example, the exhaust temperature is 85 ℃, which is less than 90 ℃ preset by the air conditioner (of course, the temperature can be preset with T)_dThe same). At this time, the exhaust temperature does not trigger the protection control, and therefore, the formula can be followedCalculating to obtain an opening degree adjustment value delta E, and controlling the opening degree of the electronic expansion valve to reduce the delta E when the delta E is a negative value; and when Δ E is a positive value, the opening degree is maintained. For details, reference is made to the above embodiments, which are not described herein again.

The condition is that the air conditioner is controlled to reach the temperature until the air conditioner meets the first mode or the second mode, and corresponding normal control or shutdown control is carried out.

Situation two

For example, the exhaust gas temperature obtained is 97 ℃, which is greater than T_d(95 ℃ C.). At this time, since the exhaust temperature is too high, the protection control may be triggered according to the formulaCalculating to obtain an opening degree adjustment value delta E, and controlling the opening degree of the electronic expansion valve to increase delta E when the delta E is a positive value; and when the delta E is a negative value, the opening degree is kept unchanged. For details, reference is made to the above embodiments, which are not described herein again.

The condition is the exhaust temperature control of the air conditioner until the air conditioner meets the first mode, the second mode or the first condition, and corresponding normal control, stop control or temperature reaching control are carried out.

Of course, the air conditioner may also be a multi-split air conditioner, and when at least one indoor unit of the multi-split air conditioner is in a cooling mode, the multi-split air conditioner executes the air conditioner cooling control method, which is not described herein again.

[ second embodiment ]

Referring to fig. 2, a refrigeration control device of an air conditioner according to a second embodiment of the present invention is shownSchematic diagram of the module. The air conditioner cooling control device 100 includes, for example: a cooling module 110 for controlling the air conditioner to be in a cooling mode; an obtaining module 120 for obtaining the indoor environment temperature value T_HAnd a set temperature value T_S(ii) a Control module 130 for controlling the operation of the motor at T_S-T_b＜T_H≤T_S+T_aAccording to the T_SControlling the opening degree of the electronic expansion valve; wherein, T is_aFor a first set temperature threshold, T_bThe second set temperature threshold.

In a specific embodiment, the refrigeration module 110, the obtaining module 120 and the control module 130 of the air conditioner refrigeration control device 100 cooperate to implement the air conditioner refrigeration control method described in the first embodiment, which is not described herein again.

[ third embodiment ]

Referring to fig. 3, which is a block diagram of an air conditioner according to a third embodiment of the present invention, the air conditioner 200 includes, for example, a package IC220 and a memory 210 electrically connected to the package IC220, the memory 210 stores a computer program 211, and when the computer program 211 is read by the package IC220 and is run, the air conditioner 200 implements the air conditioner cooling control method according to the first embodiment.

In one embodiment, the packaged IC220 is, for example, a processor chip electrically connected to the memory 210 for reading and executing the computer program. The packaged IC220 may also be a packaged circuit board that encloses a processor chip that can read and execute the computer program 211; of course, the circuit board may also encapsulate the memory 210.

On the other hand, the processor chip may further be provided with the air conditioner refrigeration control device 100 according to the second embodiment, and the processor chip may implement the air conditioner refrigeration control method according to the first embodiment through the air conditioner refrigeration control device 100, which is not described herein again.

[ fourth example ] A

Referring to fig. 4, which is a schematic structural diagram of a readable storage medium according to a fourth embodiment of the present invention, the readable storage medium 300 is, for example, a non-volatile memory, and is, for example: magnetic media (e.g., hard disks, floppy disks, and magnetic tape), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices specially constructed for storing and executing computer-executable instructions (e.g., Read Only Memories (ROMs), Random Access Memories (RAMs), flash memories, etc.). The readable storage medium 300 has stored thereon computer-executable instructions 310. The readable storage medium 300 may be executable by one or more processors or processing devices to execute the computer-executable instructions 310 to cause an air conditioner in which it is located to implement the air conditioner refrigeration control method as described in the first embodiment.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.