阅读说明：本技术 一种冷风机化霜控制方法、装置、存储介质及冷风机 (Air cooler defrosting control method and device, storage medium and air cooler ) 是由 叶梓健 谢斌斌 冉光宗 周逢杭 刘家豪 于 2021-08-16 设计创作，主要内容包括：本发明提供一种冷风机化霜控制方法、装置、存储介质及冷风机,所述方法包括：根据所处环境的环境温度和相对湿度确定所述冷风机机组是否满足化霜进入条件；若确定所述冷风机机组满足化霜进入条件,则控制所述冷风机机组进入化霜；控制所述冷风机机组进入化霜后,根据所处环境的环境温度和温升速度控制所述冷风机机组的化霜加热装置和内风机。本发明提供的方案能够达到化霜均匀的目的。(The invention provides an air cooler defrosting control method, device, storage medium and air cooler, wherein the method comprises the following steps: determining whether the air cooler unit meets defrosting entry conditions or not according to the ambient temperature and the relative humidity of the environment; if the fact that the air cooler unit meets defrosting entry conditions is determined, controlling the air cooler unit to enter defrosting; and after the air cooler unit is controlled to enter defrosting mode, a defrosting heating device and an inner fan of the air cooler unit are controlled according to the environment temperature and the temperature rise speed of the environment where the air cooler unit is located. The scheme provided by the invention can achieve the purpose of uniform defrosting.)

1. The defrosting control method for the air cooler is characterized by comprising the following steps of:

determining whether the air cooler unit meets defrosting entry conditions or not according to the ambient temperature and the relative humidity of the environment;

if the fact that the air cooler unit meets defrosting entry conditions is determined, controlling the air cooler unit to enter defrosting;

and after the air cooler unit is controlled to enter defrosting mode, a defrosting heating device and an inner fan of the air cooler unit are controlled according to the environment temperature and the temperature rise speed of the environment where the air cooler unit is located.

2. The method of claim 1, wherein determining whether the air cooler assembly meets defrosting entry conditions based on the ambient temperature and the relative humidity of the environment comprises:

determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located;

judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not;

if the running time is larger than the set defrosting time and the heat exchange capacity is smaller than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions;

the heat exchange capacity comprises: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment.

3. The method of claim 2, further comprising:

if the running time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not are judged again, and therefore the fact that the air cooler unit meets the defrosting entering condition is determined.

4. The method according to any one of claims 1 to 3, wherein controlling the defrosting heating device and the internal fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment comprises:

controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed;

controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment;

and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed.

5. The method of claim 4, wherein controlling the rotational speed of the inner fan according to the rising speed of the ambient temperature of the environment comprises:

judging whether the rising speed of the environmental temperature is greater than a target temperature rising speed or not;

and if the rising speed is judged to be larger than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a set percentage.

6. The utility model provides an air-cooler defrosting control device which characterized in that includes:

the determining unit is used for determining whether the air cooler unit meets defrosting entrance conditions according to the ambient temperature and the relative humidity of the environment;

the control unit is used for controlling the air cooler unit to enter defrosting if the determination unit determines that the air cooler unit meets defrosting entering conditions;

the control unit is further configured to: and after the air cooler unit is controlled to enter defrosting mode, a defrosting heating device and an inner fan of the air cooler unit are controlled according to the environment temperature and the temperature rise speed of the environment where the air cooler unit is located.

7. The apparatus of claim 6, wherein the determining unit determines whether the air cooler assembly meets the defrosting entry condition according to the ambient temperature and the relative humidity of the environment, and comprises:

determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located;

judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not;

if the running time is larger than the set defrosting time and the heat exchange capacity is smaller than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions;

the heat exchange capacity comprises: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment.

8. The apparatus of claim 7, wherein the determining unit determines whether the air cooler assembly satisfies a defrosting entry condition according to an ambient temperature and a relative humidity of an environment, further comprising:

if the running time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not are judged again, and therefore the fact that the air cooler unit meets the defrosting entering condition is determined.

9. The apparatus according to any one of claims 6 to 8, wherein the control unit controls the defrosting heating device and the internal fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment, and comprises:

controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed;

controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment;

and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed.

10. The apparatus of claim 9, wherein the control unit controls the rotation speed of the inner fan according to an increase speed of an ambient temperature of an environment, comprising:

judging whether the rising speed of the environmental temperature is greater than a target temperature rising speed or not;

and if the rising speed is judged to be larger than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a set percentage.

11. A storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.

12. An air cooler comprising a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor when executing the program performing the steps of the method of any one of claims 1 to 5 or comprising the air cooler defrosting control apparatus of any one of claims 6 to 10.

Technical Field

The invention relates to the field of control, in particular to an air cooler defrosting control method and device, a storage medium and an air cooler.

Background

In the field of freezing and refrigerating units, the working condition of the unit is much worse than that of a common air conditioner, and the long-term operation of an air cooler under the condition inevitably causes frosting. And because the user is mostly non-professional, often because the unit improper use leads to the unit to appear freezing phenomenon, even forms vicious circle, and final ice sheet is the thicker more knot, makes the unit appear irreparable trouble.

Disclosure of Invention

The invention mainly aims to overcome the defects of the prior art and provides an air cooler defrosting control method, an air cooler defrosting control device, a storage medium and an air cooler so as to solve the problem that an air cooler in the prior art is frosted after long-term operation.

The invention provides an air cooler defrosting control method on the one hand, which comprises the following steps: determining whether the air cooler unit meets defrosting entry conditions or not according to the ambient temperature and the relative humidity of the environment; if the fact that the air cooler unit meets defrosting entry conditions is determined, controlling the air cooler unit to enter defrosting; and after the air cooler unit is controlled to enter defrosting mode, a defrosting heating device and an inner fan of the air cooler unit are controlled according to the environment temperature and the temperature rise speed of the environment where the air cooler unit is located.

Optionally, determining whether the air cooler unit meets a defrosting entry condition according to the ambient temperature and the relative humidity of the environment includes: determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located; judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not; and if the running time is judged to be greater than the set defrosting time and the heat exchange capacity is judged to be less than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions.

Optionally, the method further comprises: if the running time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, judging whether the running time of the air cooler unit is greater than the set defrosting time and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity again to determine that the air cooler unit meets defrosting entering conditions; the heat exchange capacity comprises: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment.

Optionally, the defrosting heating device and the inner fan of the air cooler unit are controlled according to the ambient temperature and the temperature rise speed of the environment, and the defrosting heating device and the inner fan comprise: controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed; controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment; and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed.

Optionally, the controlling the rotation speed of the inner fan according to the rising speed of the environmental temperature of the environment includes: judging whether the rising speed of the environmental temperature is greater than a target temperature rising speed or not; and if the rising speed is judged to be larger than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a set percentage.

In another aspect, the present invention provides an air cooler defrosting control apparatus, including: the determining unit is used for determining whether the air cooler unit meets defrosting entrance conditions according to the ambient temperature and the relative humidity of the environment; the control unit is used for controlling the air cooler unit to enter defrosting if the determination unit determines that the air cooler unit meets defrosting entering conditions; the control unit is further configured to: and after the air cooler unit is controlled to enter defrosting mode, a defrosting heating device and an inner fan of the air cooler unit are controlled according to the environment temperature and the temperature rise speed of the environment where the air cooler unit is located.

Optionally, the determining unit determines whether the air cooler unit meets the defrosting entry condition according to the ambient temperature and the relative humidity of the environment, and includes: determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located; judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not; and if the running time is judged to be greater than the set defrosting time and the heat exchange capacity is judged to be less than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions.

Optionally, the determining unit determines whether the air cooler unit meets a defrosting entry condition according to an ambient temperature and a relative humidity of an environment where the air cooler unit is located, and further includes: if the running time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, judging whether the running time of the air cooler unit is greater than the set defrosting time and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity again to determine that the air cooler unit meets defrosting entering conditions; the heat exchange capacity comprises: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment.

Optionally, the control unit controls the defrosting heating device and the inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment, and includes: controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed; controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment; and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed.

Optionally, the controlling unit controls the rotation speed of the inner fan according to an increasing speed of an ambient temperature of an environment, including: judging whether the rising speed of the environmental temperature is greater than a target temperature rising speed or not; and if the rising speed is judged to be larger than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a set percentage.

A further aspect of the invention provides a storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of any of the methods described above.

In a further aspect, the present invention provides an air cooler comprising a processor, a memory and a computer program stored on the memory and operable on the processor, wherein the processor executes the program to perform the steps of any one of the methods described above.

The invention further provides an air cooler which comprises any one of the air cooler defrosting control devices.

According to the technical scheme of the invention, whether the defrosting condition is achieved or not is judged by detecting the heat exchange capacity of the unit, after the defrosting condition is judged to be achieved and defrosting is started, the inner fan is started to uniformly dissipate electric heating heat, so that the aim of uniformly defrosting is achieved, and meanwhile, the environmental temperature rising condition and the defrosting temperature are judged to comprehensively judge the defrosting rotation speed collocation and the defrosting condition quit.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a method schematic diagram of an embodiment of an air cooler defrosting control method provided by the invention;

FIG. 2 is a schematic view of a process for determining whether a defrosting entry condition is satisfied;

FIG. 3 is a schematic diagram of a defrosting process after a unit enters defrosting;

fig. 4 is a block diagram of an embodiment of an air cooler defrosting control device provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

At present, a common technology in the defrosting technology of a small refrigeration house is electric heating defrosting, namely, a time relay is used for controlling a unit to perform electric heating defrosting once every a plurality of times. The prior art has the following problems: the service conditions of the condensing units of the same model are very different, the optimal defrosting interval and defrosting time of the condensing units can be changed according to the local climatic conditions, the humidity of stored goods, the habit of closing the door by a user when the user enters and exits the refrigeration house, and the like, the prior art cannot change the optimal defrosting interval and defrosting time at any time according to the variables, the quality of commodities is influenced at last, and the spoilage of the commodities and the damage of the condensing units are caused seriously.

The invention provides an air cooler defrosting control method. Fig. 1 is a method schematic diagram of an embodiment of an air cooler defrosting control method provided by the invention.

As shown in fig. 1, according to an embodiment of the present invention, the defrosting control method includes at least step S110, step S120, and step S130.

And step S110, determining whether the air cooler unit meets defrosting entry conditions or not according to the ambient temperature and the relative humidity of the environment.

In a specific embodiment, determining whether the air cooler unit meets the defrosting entry condition according to the ambient temperature and the relative humidity of the environment may specifically include: determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located; judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not; and if the running time is judged to be greater than the set defrosting time and the heat exchange capacity is judged to be less than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions.

The heat exchange capacity may specifically include: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment. The set heat transfer capacity is expressed in Tc in units of ℃; presetting different temperature intervals corresponding to different set heat exchange capacities; and determining the set heat exchange capacity according to the ambient temperature T of the refrigeration house where the unit is located. The preset temperature interval is obtained by controlling variables, and different set defrosting times Tk corresponding to different temperature intervals are obtained according to experimental data.

And setting defrosting time Tk for judging the current storage temperature range and the relative humidity range, and judging whether the unit runs for enough time, namely reasonably defrosting time, so as to ensure that the unit starts to frost. In a specific embodiment, different temperature intervals and humidity intervals are preset and correspond to different set defrosting times; and determining the set defrosting time according to the ambient temperature T of the refrigeration house where the unit is located and the relative humidity TH of the refrigeration house. The preset temperature interval and the humidity interval are obtained through controlling variables in the experiment, and different set defrosting times Tk corresponding to different temperature intervals and humidity intervals are obtained according to experiment data.

For example, when the warehouse temperature T1 < T warehouse temperature < T2 (here, T1, T2, and T3 … are preset values for distinguishing the temperature interval of the warehouse temperature), and a% < TH < b% (where a%, b%, and c% … are preset values for distinguishing the humidity interval of the relative humidity of the warehouse), there is a reasonable defrosting time Tk, and the defrosting is determined as the reasonable defrosting time Tk to determine the basic condition of entering defrosting.

Specifically, whether the running time of the unit is greater than reasonable defrosting time (namely, set defrosting time) Tk can be judged first, so that the unit is guaranteed to frost. When the running time of the unit is judged to be greater than reasonable defrosting time (set defrosting time) Tk, judging whether the heat exchange capacity Ts of the unit is less than temperature Tc (the absolute value of the difference value between the set evaporation temperature of the unit and the environmental temperature of the environment, namely the set heat exchange capacity) which is required to enter defrosting, wherein the set heat exchange capacities Tc of different condensing units are different, and the environmental temperatures of the environment where the unit is located are in different temperature intervals and correspond to different Tc values, for example, the set heat exchange capacities corresponding to different temperature intervals such as Tc1, Tc2 and Tc3 exist; and when the running time of the unit is greater than the reasonable defrosting time Tk and the heat exchange capacity Ts of the unit is less than the temperature Tc at which defrosting should be carried out, the unit enters defrosting. If the running time is less than Tk, the unit continues to run, the latest Tk value is judged again, if the heat exchange capacity of the unit is more than Tc, the unit continues to run, and the latest Tk value and Tc value are judged again at any time.

Further, if the operation time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, whether the operation time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not are judged again. For example, if the operation time is judged to be less than Tk, the operation is continued, the latest Tk value is judged again, and if the heat exchange capacity of the unit is judged to be more than Tc, the operation is continued, and the latest Tk value and Tc value are judged again at any time.

And step S120, if the air cooler unit is determined to meet the defrosting entry condition, controlling the air cooler unit to enter defrosting.

And S130, controlling the air cooler unit to defrost, and then controlling a defrosting heating device and an inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment.

And when the air cooler unit is determined to meet the defrosting entering condition, controlling the air cooler unit to enter defrosting. And after defrosting, controlling a defrosting heating device and an inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment.

In a specific embodiment, the controlling the defrosting heating device and the inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment may specifically include: controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed; controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment; and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed. After the environment temperature is raised to the preset temperature (for example, 0 ℃) by using the defrosting heating device, no additional heat source can be provided, defrosting with higher efficiency can be achieved by continuously circulating air above the preset temperature (for example, 0 ℃) through a fan of the air cooler, and the cold energy of residual frost can be utilized to the maximum extent.

The preset rotation speed is, for example, a set percentage of the maximum rotation speed of the inner fan, for example, 50% of the maximum rotation speed of the inner fan. The inner fan is started to uniformly dissipate the electric heating heat, so that the aim of uniformly defrosting is fulfilled. In one embodiment, the controlling the rotation speed of the inner fan according to the rising speed of the environmental temperature of the environment may specifically include: and judging whether the rising speed Vs of the environment temperature is greater than a target temperature rising speed V or not, and if the rising speed is greater than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a preset percentage.

For example, after defrosting, the compressor of the unit is stopped, the electric heating is started, the inner fan is started at 50% of the maximum rotating speed, and the defrosting temperature T is judged in real time_{Defrosting cream}(the refrigerating and freezing units using electric heating defrosting are all provided with a defrosting temperature sensor which is arranged at the cold end of the unit, for example, the place with the worst electric heating effect can be understood as a local area with the lowest defrosting efficiency, whether defrosting is clean or not is judged by detecting the temperature at the place during defrosting), the rotating speed of an inner fan is adjusted by the temperature rise speed Vs in the refrigerator, so that the overhigh temperature rise in the refrigerator caused by the excessive blowing-out of the hot air heated by electricity is prevented, a target temperature rise speed V is set, the temperature rise speed of the refrigerator is required to meet Vs and is not more than V, wherein, the environmental temperature rise speed Vs is calculated once every Deltat time, Vs is equal to (the temperature value of the refrigerator after Deltat and before Deltat)/. Deltat, and when Vs is judged to be more than V, the inner air is controlled to be equal toAnd after the set time, judging again (namely judging again whether the rising speed Vs of the environment temperature is greater than the target temperature rising speed V) whether to continuously reduce the rotating speed of the inner fan.

The mode that here adopted electrical heating and fan to open simultaneously is for making electrical heating's heating effect more even, but from this for avoiding appearing hot-blast excessively blowing off influence freezer goods quality, consequently will constantly adjust interior machine rotational speed. Because frost is gradually reduced, the rotating speed of the inner fan is continuously reduced.

And then defrosting by utilizing the ambient temperature (such as the temperature of the warehouse), melting the residual frost of the air cooler, maintaining the constant temperature of the warehouse or reducing the rising amplitude of the temperature of the warehouse by utilizing the residual cold energy until the defrosting temperature reaches a set defrosting exit value Tt, completing primary defrosting, and entering refrigeration again.

In order to clearly illustrate the technical solution of the present invention, an implementation flow of the defrosting control method for an air cooler provided by the present invention is described below with an embodiment.

Fig. 2 is a schematic flow chart for determining whether the defrosting entry condition is satisfied. As shown in fig. 2, firstly, whether a defrosting entry condition is met is judged, a reasonable defrosting time Tk and a heat exchange capacity Tc are determined according to a freezer ambient temperature T freezer temperature and a freezer relative humidity TH where the unit is located, specifically, whether the unit operation time is greater than the reasonable defrosting time Tk is judged, and the reasonable defrosting time Tk is used for judging whether the unit has operated for enough time when the environment is in a certain freezer temperature range and a certain relative humidity range, so as to ensure that the unit has started to frost. When the running time of the unit is judged to be greater than the reasonable defrosting time Tk, judging whether the heat exchange capacity Ts of the unit is less than the temperature Tc (the absolute value of the difference between the set evaporation temperature of the unit and the environmental temperature of the environment, namely the set heat exchange capacity) which is required to enter defrosting, wherein the Tc of different condensing units is different, and a plurality of intervals such as Tc1, Tc2, Tc3 and the like exist according to the environmental temperature of the unit; and when the running time of the unit is greater than the reasonable defrosting time Tk and the heat exchange capacity Ts of the unit is less than the temperature Tc at which defrosting should be carried out, the unit enters defrosting. If the running time is less than Tk, the unit continues to run, the latest Tk value is judged again, if the heat exchange capacity of the unit is more than Tc, the unit continues to run, and the latest Tk value and Tc value are judged again at any time.

Fig. 3 is a schematic diagram of a defrosting process after the unit enters defrosting. As shown in figure 3, during defrosting, the compressor of the unit is stopped, the electric heating is started, the inner fan is started at 50% of the rotating speed, and the defrosting temperature T is judged in real time_{Defrosting cream}And adjusting the rotating speed of the inner fan by the speed Vs of the temperature rise in the warehouse to prevent the overhigh temperature rise in the warehouse caused by the excessive blowing of the hot air heated by electricity, setting a target speed V of the temperature rise, wherein the speed Vs of the temperature rise in the warehouse must meet the condition that Vs is less than or equal to V, and the calculation method is that: and controlling the rotating speed of the inner fan to reduce a set rotating speed value (the set rotating speed value is a preset percentage of the original rotating speed) when the temperature value is greater than V, and recalculating whether the rotating speed needs to be reduced continuously after preset time. And when the temperature in the detection warehouse is higher than the preset warehouse temperature value Tg, the electric heating is closed, and then the inner fan is gradually started to the maximum rotating speed. And defrosting is carried out by utilizing the temperature of the storehouse, so that the residual frost of the air cooler is melted, and meanwhile, the residual cold energy is utilized to maintain the constant temperature of the storehouse or reduce the rising amplitude of the temperature of the storehouse until the defrosting temperature reaches a set defrosting exit value Tt, so that once defrosting is completed, and refrigeration is carried out again.

Fig. 4 is a block diagram of an embodiment of an air cooler defrosting control device provided by the present invention. As shown in fig. 4, the defrosting control apparatus 100 includes a determination unit 110 and a control unit 120.

The determining unit 110 is configured to determine whether the air cooler assembly meets defrosting entry conditions according to the ambient temperature and the relative humidity of the environment.

In a specific embodiment, the determining unit 110 may specifically determine whether the air cooler assembly satisfies the defrosting entry condition according to the ambient temperature and the relative humidity of the environment, where the air cooler assembly satisfies the defrosting entry condition, including: determining a set defrosting time and a set heat exchange capacity according to the ambient temperature and the relative humidity of the environment where the air cooler unit is located; judging whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not; and if the running time is judged to be greater than the set defrosting time and the heat exchange capacity is judged to be less than the set heat exchange capacity, determining that the air cooler unit meets defrosting entering conditions.

The heat exchange capacity may specifically include: and the absolute value of the difference between the evaporation temperature of the air cooler unit and the ambient temperature of the environment. The set heat transfer capacity is expressed in Tc in units of ℃; presetting different temperature intervals corresponding to different set heat exchange capacities; and determining the set heat exchange capacity according to the ambient temperature T of the refrigeration house where the unit is located. The preset temperature interval is obtained by controlling variables, and different set defrosting times Tk corresponding to different temperature intervals are obtained according to experimental data.

The defrosting time Tk is set for judging the current storage temperature range and the current relative humidity range, and whether the unit operates for enough time or not, namely reasonable defrosting time is ensured, and the unit starts to frost. In a specific embodiment, different temperature intervals and humidity intervals are preset and correspond to different set defrosting times; and determining the set defrosting time according to the ambient temperature T of the refrigeration house where the unit is located and the relative humidity TH of the refrigeration house. The preset temperature interval and the humidity interval are obtained through controlling variables in the experiment, and different set defrosting times Tk corresponding to different temperature intervals and humidity intervals are obtained according to experiment data.

For example, when the warehouse temperature T1 < T_{Storage temperature}T2 (here, T1, T2 and T3 … are preset values for distinguishing the temperature range of the storehouse), and a% < TH < b% (a%, b% and c% … are preset values for distinguishing the humidity range of the relative humidity of the storehouse), when a reasonable defrosting time Tk exists, the defrosting is judged to enter the defrosting base condition according to the reasonable defrosting time Tk.

Specifically, whether the running time of the unit is greater than reasonable defrosting time (namely, set defrosting time) Tk can be judged first, so that the unit is guaranteed to frost. When the running time of the unit is judged to be greater than reasonable defrosting time (set defrosting time) Tk, judging whether the heat exchange capacity Ts of the unit is less than temperature Tc (the absolute value of the difference value between the set evaporation temperature of the unit and the environmental temperature of the environment, namely the set heat exchange capacity) which should enter defrosting, wherein the set heat exchange capacities Tc of different condensing units are different, and different Tc values are corresponding to different temperature intervals according to the environmental temperature of the environment where the unit is located, for example, the set heat exchange capacities corresponding to different temperature intervals such as Tc1, Tc2 and Tc3 exist; and when the running time of the unit is greater than the reasonable defrosting time Tk and the heat exchange capacity Ts of the unit is less than the temperature Tc at which defrosting should be carried out, the unit enters defrosting. If the running time is less than Tk, the unit continues to run, the latest Tk value is judged again, if the heat exchange capacity of the unit is more than Tc, the unit continues to run, and the latest Tk value and Tc value are judged again at any time.

Further, the determining unit 110 is further configured to: if the running time is judged to be less than or equal to the set defrosting time or the heat exchange capacity is judged to be greater than or equal to the set heat exchange capacity, whether the running time of the air cooler unit is greater than the set defrosting time or not and whether the heat exchange capacity of the air cooler unit is less than the set heat exchange capacity or not are judged again. For example, if the operation time is judged to be less than Tk, the operation is continued, the latest Tk value is judged again, and if the heat exchange capacity of the unit is judged to be more than Tc, the operation is continued, and the latest Tk value and Tc value are judged again at any time.

The control unit 120 is configured to control the air cooler unit to enter defrosting if the determination unit 110 determines that the air cooler unit meets the defrosting entry condition, and control the air cooler unit to enter defrosting and then control the defrosting heating device and the inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment where the air cooler unit is located.

When the determination unit 110 determines that the air cooler unit meets the defrosting entry condition, the control unit 120 controls the air cooler unit to enter defrosting. After defrosting, the control unit 120 controls the defrosting heating device and the inner fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment where the air cooler unit is located.

In a specific embodiment, the control unit 120 controls the defrosting heating device and the internal fan of the air cooler unit according to the ambient temperature and the temperature rise speed of the environment, including: controlling the compressor to stop, starting the defrosting heating device, and starting the inner fan to operate at a preset rotating speed; controlling the rotating speed of the inner fan according to the rising speed of the environmental temperature of the environment; and when the environmental temperature of the environment is higher than the preset temperature, the defrosting heating device is controlled to be closed, and the rotating speed of the inner fan is increased to the maximum rotating speed. After the environment temperature is raised to the preset temperature (for example, 0 ℃) by using the defrosting heating device, no additional heat source can be provided, defrosting with higher efficiency can be achieved by continuously circulating air above the preset temperature (for example, 0 ℃) through a fan of the air cooler, and the cold energy of residual frost can be utilized to the maximum extent.

The preset rotation speed is, for example, a set percentage of the maximum rotation speed of the inner fan, for example, 50% of the maximum rotation speed of the inner fan. The inner fan is started to uniformly dissipate the electric heating heat, so that the aim of uniformly defrosting is fulfilled. In one embodiment, the controlling unit 120 controls the rotation speed of the inner fan according to the rising speed of the environmental temperature of the environment, including: and judging whether the rising speed Vs of the environment temperature is greater than a target temperature rising speed V or not, and if the rising speed is greater than the target temperature rising speed, controlling the rotating speed of the inner fan to be reduced by a preset percentage.

For example, after defrosting, the compressor of the unit is stopped, the electric heating is started, the inner fan is started at 50% of the maximum rotating speed, and the defrosting temperature T is judged in real time_{Defrosting cream}(the refrigerating and freezing units using electric heating defrosting are all provided with a defrosting temperature sensor which is arranged at the cold end of the unit, for example, the place with the worst electric heating effect, can be understood as a local area with the lowest defrosting efficiency, whether defrosting is clean is judged by detecting the temperature at the local area during defrosting) and the temperature rise speed Vs in the warehouse is used for adjusting the rotating speed of the inner fan, in order to prevent the over blowing of the electrically heated hot air from causing the over-high temperature rise in the warehouse, a target temperature rise speed V is set, the temperature rise speed of the warehouse must meet the condition that Vs is less than or equal to V, wherein, the environmental temperature rising speed Vs is calculated once every time delta t, Vs is equal to (reservoir temperature value after delta t- < reservoir temperature value before delta t)/< delta t, and when the Vs is larger than the V, controlling the rotating speed of the inner fan to be reduced by a set percentage (namely, reducing the set percentage of the original rotating speed), and after a preset time, judging again (namely, judging again).Whether the rising speed Vs of the environment temperature is larger than the target temperature rising speed V) or not needs to continuously reduce the rotating speed of the inner fan.

The mode that here adopted electrical heating and fan to open simultaneously is for making electrical heating's heating effect more even, but from this for avoiding appearing hot-blast excessively blowing off influence freezer goods quality, consequently will constantly adjust interior machine rotational speed. Because frost is gradually reduced, the rotating speed of the inner fan is continuously reduced.

And then defrosting by utilizing the ambient temperature (such as the temperature of the warehouse), melting the residual frost of the air cooler, maintaining the constant temperature of the warehouse or reducing the rising amplitude of the temperature of the warehouse by utilizing the residual cold energy until the defrosting temperature reaches a set defrosting exit value Tt, completing primary defrosting, and entering refrigeration again.

The invention also provides a storage medium corresponding to the air cooler defrosting control method, wherein a computer program is stored on the storage medium, and the program is executed by a processor to realize the steps of any one of the methods.

The invention also provides an air cooler corresponding to the defrosting control method of the air cooler, which comprises a processor, a memory and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the steps of any one of the methods when executing the program.

The invention also provides an air cooler corresponding to the air cooler defrosting control device, which comprises any one of the air cooler defrosting control devices.

According to the scheme provided by the invention, whether the defrosting condition is achieved or not is judged by detecting the heat exchange capacity of the unit, after the defrosting condition is judged to be achieved and defrosting is started, the inner fan is started to uniformly dissipate electric heating heat, so that the aim of uniformly defrosting is achieved, and meanwhile, the environmental temperature rising condition and the defrosting temperature are judged to comprehensively judge the defrosting rotation speed collocation and the defrosting condition quit.

The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the invention and the following claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hardwired, or a combination of any of these. In addition, each functional unit may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.

In the embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units may be a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, units or modules, and may be in an electrical or other form.

The units described as separate parts may or may not be physically separate, and the parts serving as the control device may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.