CN113720082B - Air cooler defrosting control method, device, equipment and system and air cooler - Google Patents
Air cooler defrosting control method, device, equipment and system and air cooler Download PDFInfo
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- CN113720082B CN113720082B CN202111081659.0A CN202111081659A CN113720082B CN 113720082 B CN113720082 B CN 113720082B CN 202111081659 A CN202111081659 A CN 202111081659A CN 113720082 B CN113720082 B CN 113720082B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/02—Detecting the presence of frost or condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/002—Defroster control
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Abstract
The invention relates to an air cooler defrosting control method, device, equipment and system and an air cooler, wherein the air cooler defrosting control system comprises the following components: at least one set of defrosting detection devices; the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator. The method comprises the following steps: acquiring a sensing signal sent by a light receiving component after receiving light emitted by a light emitter in real time; analyzing the induction signal and determining frosting information corresponding to the induction signal; and controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost. In this scheme, the light of light emitter transmission passes the evaporimeter and shines light receiving assembly, and through light receiving assembly's feedback, judge whether refraction takes place for light, confirms frosting information, realizes the monitoring to the frosting condition on the evaporimeter, has improved the degree of accuracy of defrosting, has practiced thrift the energy.
Description
Technical Field
The invention relates to the technical field of air cooler defrosting, in particular to an air cooler defrosting control method, device, equipment and system and an air cooler.
Background
The industrial air cooler utilizes the evaporative cooling principle of outdoor fresh air to cool and carries out convection ventilation with the indoor air so as to achieve the purpose of indoor ventilation and cooling. The industrial air cooler is generally used in a refrigeration house and a cold-chain logistics refrigeration environment, and the air cooler has wide application in the current refrigeration house equipment.
The air-cooler works for a long time in low temperature freezer environment, when refrigerating, receives the influence of low temperature, humidity in the storehouse, can constantly frosting on the evaporimeter, when frosting to the certain degree, can obstruct the air-out of air-cooler, makes the refrigeration effect of air-cooler receive the influence, consequently, the air-cooler need defrost often. In the prior art, methods such as electric defrosting, heat pump defrosting, natural defrosting and water defrosting are usually adopted to defrost the air cooler, but when defrosting is carried out, the frosting degree and the defrosting effect of the air cooler cannot be known, so that accurate defrosting cannot be carried out on the air cooler, the problem of incomplete defrosting or frost-free defrosting is easily caused, resource waste is caused, and the safety of the air cooler is influenced.
Therefore, how to improve the defrosting accuracy of the air cooler and reduce the resource waste is a technical problem which needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
In view of the above, the invention aims to provide an air cooler defrosting control method, device, equipment and system and an air cooler, so as to solve the problems that in the prior art, the air cooler cannot be defrosted accurately, so that the problem of incomplete defrosting or frost-free defrosting is easily caused, resource waste is caused, and the safety of the air cooler is affected.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an air-cooler defrosting control method, is applied to air-cooler defrosting control system, air-cooler defrosting control system includes: at least one set of defrosting detection devices; the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator;
the defrosting control method of the air cooler comprises the following steps:
acquiring a sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter in real time;
analyzing the induction signal and determining frosting information corresponding to the induction signal;
And controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler.
Further, in the air cooler defrosting control method, the light receiving assembly includes: the first photosensitive switch is arranged at a frost-free irradiation position, and the second photosensitive switch is arranged at a to-be-defrosted irradiation position;
the analyzing the sensing signal to determine frosting information corresponding to the sensing signal includes:
if the sensing signal is a first conducting signal sent by the first photosensitive switch after the first photosensitive switch receives the light closing, it is determined that frosting information corresponding to the sensing signal indicates that frosting is not generated;
and if the sensing signal is a second conducting signal sent by the second photosensitive switch after the second photosensitive switch receives the light closing, determining that the frosting information corresponding to the sensing signal indicates that the frosting condition with the preset thickness is achieved.
Further, in the air cooler defrosting control method, the switch control command includes: opening a control instruction and closing the control instruction;
according to the frosting information, control light receiving component work to the defrosting subassembly that sets up in advance sends the switch control instruction, include:
If the frosting information shows that the defrosting condition with the preset thickness is achieved, the first photosensitive switch is controlled to be switched off, and the starting control instruction is sent to the defrosting assembly;
and if the frosting information indicates that frosting does not occur, controlling the second photosensitive switch to be switched off, and sending the closing control instruction to the defrosting assembly.
Further, the air cooler defrosting control method further comprises the following steps:
when the air cooler is started for the first time, whether a first conduction signal sent by the first photosensitive switch after the first photosensitive switch receives the light closing is obtained or not is judged;
if the first conduction signal is not acquired, generating fault alarm information, and sending the fault alarm information to a preset alarm device so that a user can check the fault alarm information output by the alarm device.
Further, in the air-cooler defrosting control method, the air-cooler defrosting control system further includes: a light receiving plate disposed at a wind feeding side of the evaporator; the light receiving assembly is arranged on the light receiving plate;
the defrosting control method of the air cooler further comprises the following steps:
acquiring light sensing information sent by the light receiving plate after receiving the light emitted by the light emitter in real time;
If the induction signal and the light induction information are not obtained, calculating the current starting-up operation duration of the air cooler according to the pre-recorded starting-up time and the current time;
judging whether the current starting-up operation time length is less than a preset defrosting time length or not;
if the current starting-up operation time length is less than the preset defrosting time length, acquiring the current temperature of the refrigeration house where the air cooler is located, and judging whether the current starting-up operation time length and the current temperature meet the preset defrosting condition of the refrigeration house;
if the current starting operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, or the current starting operation time length is not less than the preset defrosting time length, sending an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened.
Further, in the air cooler defrosting control method, before obtaining in real time an induction signal sent by the light receiving assembly after receiving the light emitted by the light emitter, the method further includes:
judging whether the current light ray position of the light ray received by the light receiving plate is within the sensing range of the light ray receiving assembly or not according to the light ray sensing information;
If the current light position is not in the sensing range of the light receiving assembly, sending a starting control instruction to the defrosting assembly to control the defrosting assembly to be started;
correspondingly, the real-time induction signal who sends after obtaining the light that light receiving component received the light transmitter transmission includes:
and if the current light ray position is within the sensing range of the light ray receiving assembly, acquiring a sensing signal sent by the light ray receiving assembly after receiving the light ray emitted by the light ray emitter in real time.
The invention also provides an air cooler defrosting control device, which is applied to an air cooler defrosting control system, wherein the air cooler defrosting control system comprises: at least one set of defrosting detection devices; the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator;
air-cooler defrosting controlling means includes:
the acquisition module is used for acquiring an induction signal sent by the light receiving assembly after receiving the light emitted by the light emitter in real time;
the signal analysis module is used for analyzing the induction signals and determining frosting information corresponding to the induction signals;
And the control module is used for controlling the light receiving assembly to work according to the frosting information and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler.
Further, among the above-mentioned air-cooler defrosting control device, air-cooler defrosting control system still includes: a light receiving plate disposed on the air supply side of the evaporator; the light receiving assembly is arranged on the light receiving plate;
the air-cooler defrosting control device still includes: the device comprises a calculation module and a judgment module;
the acquisition module is further used for acquiring light sensing information sent by the light receiving board after receiving the light emitted by the light emitter in real time;
the calculation module is used for calculating the current starting operation time of the air cooler according to the pre-recorded starting time and the current time if the sensing signal and the light sensing information are not acquired;
the judging module is used for judging whether the current starting operation time length is less than a preset defrosting time length;
the judging module is further configured to obtain a current storage temperature of the refrigeration storage where the air cooler is located if the current startup operation time length is less than the preset defrosting time length, and judge whether the current startup operation time length and the current storage temperature meet a preset storage temperature defrosting condition;
The control module is further configured to send an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened if the current starting operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, or the current starting operation time length is not less than the preset defrosting time length.
The invention also provides an air cooler defrosting control device, which comprises: a processor and a memory coupled to the processor;
the storage is used for storing a computer program, and the computer program is at least used for executing the air cooler defrosting control method;
the processor is used for calling and executing the computer program.
The invention also provides an air cooler defrosting control system, which comprises: at least one group of defrosting detection devices and the air cooler defrosting control equipment;
the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator;
the light ray emitter and the light ray receiving assembly are respectively connected with the air cooler defrosting control equipment.
Further, among the above-mentioned air-cooler defrosting control system, the light receiving assembly includes: the first photosensitive switch is arranged at a frost-free irradiation position, and the second photosensitive switch is arranged at a to-be-defrosted irradiation position;
The first photosensitive switch and the second photosensitive switch are respectively connected with the air cooler defrosting control equipment;
the frost-free irradiation position is determined according to the light emission angle of the light emitter and the preset distance between the first photosensitive switch and the evaporator in the air cooler;
the irradiation position to be defrosted is a position determined according to a preset defrosting thickness, a preset refractive index and the frostless irradiation position.
Further, above-mentioned air-cooler defrosting control system still includes: a light receiving plate disposed at a wind feeding side of the evaporator;
the light receiving assembly is arranged on the light receiving plate;
the light receiving plate is connected with the air cooler defrosting control device.
The invention also provides an air cooler, which is characterized by comprising: the defrosting control system comprises a shell, an evaporator, a defrosting assembly and the air cooler defrosting control system;
the evaporator, the defrosting assembly and the air cooler defrosting control system are all arranged inside the shell;
the defrosting assembly is connected with the air cooler defrosting control system.
An air cooler defrosting control method, device, equipment and system and an air cooler are provided, wherein the air cooler defrosting control system comprises: at least one set of defrosting detection devices; the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator; the defrosting control method of the air cooler comprises the following steps: acquiring a sensing signal sent by a light receiving component after receiving light emitted by a light emitter in real time; analyzing the induction signal and determining frosting information corresponding to the induction signal; and controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler. By adopting the technical scheme of the invention, the light emitted by the light emitter passes through the evaporator in the air cooler to irradiate the light receiving assembly, whether the light is refracted or not is judged through the feedback of the light receiving assembly, and the frosting information is determined, so that the frosting condition on the evaporator is monitored, the defrosting accuracy is improved, the problem of incomplete defrosting or no defrosting is avoided, and the energy is saved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart provided by an embodiment of an air cooler defrosting control method of the invention;
FIG. 2 is a schematic structural diagram of an air cooler defrosting control system applying an air cooler defrosting control method;
FIG. 3 is a flow chart provided by another embodiment of an air cooler defrosting control method of the present invention;
FIG. 4 is a schematic structural diagram of an air cooler defrosting control device according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram provided by an embodiment of the defrosting control device of the air cooler of the present invention;
FIG. 6 is a block diagram of the electrical circuitry provided by one embodiment of the air cooler defrosting control system of the present invention;
Fig. 7 is a block diagram of an air cooler according to an embodiment of 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 described in detail below. 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 examples given herein without any inventive step, are within the scope of the present invention.
FIG. 1 is a flow chart provided by an embodiment of an air cooler defrosting control method of the invention; fig. 2 is a schematic structural diagram of an air cooler defrosting control system applying an air cooler defrosting control method. As shown in fig. 2, the air cooler defrosting control system applying the air cooler defrosting control method according to the embodiment includes: at least one set of defrosting detection devices; each set of frost detecting means includes a light emitter 311 and a light receiving assembly 312. The light emitter 311 is disposed inside the air cooler casing 41 on the air inlet side a of the evaporator, and the light receiving assembly 312 is disposed on the air outlet side B of the evaporator.
As shown in fig. 1 and fig. 2, the air cooler defrosting control method of the present embodiment specifically includes the following steps:
S101, acquiring a sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter in real time.
In this embodiment, the light emitting angle (the included angle between the light and the vertical surface of the evaporator 43) of the light emitter 311 and the setting position of the light emitter 311 need to be adjusted in advance, so as to ensure that the light emitted by the light emitter 311 can pass through the fin gap of the evaporator 43. When the light emitted from the light emitter 311 irradiates the light receiving element 312, the light receiving element 312 can receive the light and send a sensing signal of the received light. Therefore, the present embodiment needs to acquire the sensing signal sent by the light receiving element 312 in real time.
And S102, analyzing the induction signal and determining frosting information corresponding to the induction signal.
The embodiment can analyze the acquired sensing signal, so as to determine frosting information corresponding to the sensing signal. As shown in fig. 2, in the present embodiment, when the frost 430 is not formed on the evaporator 43, the light emitted from the light emitter 311 directly and linearly irradiates the light receiving element 312, and when the frost 430 with a predetermined frost thickness is formed on the evaporator 43, the light is refracted when passing through the frost 430 and then projects onto the light receiving element 312. Therefore, the present embodiment can determine whether there is no frost formed on the evaporator 43 or whether a frost block 430 with a predetermined frost thickness is formed according to the sensing signal sent by the light receiving assembly 312. The preset defrosting thickness is preset data, and when the defrosting block 430 reaches the preset defrosting thickness, the defrosting operation is required.
Further, in the present embodiment, the light receiving assembly 312 includes: a first photosensitive switch K1 and a second photosensitive switch K2. Wherein, the first light-sensitive switch K1 is arranged at the frost-free irradiation position, and the second light-sensitive switch K2 is arranged at the irradiation position to be defrosted. Specifically, the frost-free irradiation position is a position determined according to the light emission angle of the light emitter 311 and a preset distance between the first photo switch K1 and the evaporator 43 in the air conditioner; the irradiation position to be defrosted is a position determined according to the preset defrosting thickness, the preset refractive index and the frostless irradiation position.
The method specifically comprises the following steps:
firstly, if the sensing signal is a first conduction signal sent by the first photosensitive switch after the first photosensitive switch receives the closed light, it is determined that frosting information corresponding to the sensing signal indicates that frosting is not generated.
When the first photosensitive switch K1 receives light, the first photosensitive switch K1 is turned on, and thus sends a first on signal. Therefore, if it is analyzed that the obtained sensing signal is the first on signal sent after the first photosensitive switch K1 is closed due to receiving light, it indicates that the light is not refracted, that is, the evaporator 43 is not frosted, and it is determined that the frosting information corresponding to the received sensing signal indicates that frosting is not frosted.
Secondly, if the sensing signal is a second conduction signal sent by the second photosensitive switch after the second photosensitive switch receives the closed light, it is determined that frosting information corresponding to the sensing signal indicates that the preset thickness defrosting condition is achieved.
When the second light-sensitive switch K2 receives light, the second light-sensitive switch K2 is turned on, and then sends a second on signal. Therefore, if it is analyzed that the acquired sensing signal is the second conduction signal sent after the second light sensitive switch K2 is closed due to the fact that light is received, it is indicated that the light passes through the frost block 430 having the preset defrosting thickness at the time, and refraction occurs, so that the light is refracted to the second light sensitive switch K2, that is, the thickness of the frost block 430 on the evaporator 43 reaches the preset defrosting thickness, and it is determined that the frosting information corresponding to the received sensing signal at the time indicates that the defrosting condition having the preset thickness is reached.
S103, controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly to control the defrosting assembly to defrost an evaporator in the air cooler.
After determining the frosting information corresponding to the sensing signal acquired in real time, the embodiment needs to control the light receiving assembly 312 to operate according to the frosting information, generate a switch control instruction for controlling the on/off of the defrosting assembly 44 according to the frosting information, and send the switch control instruction to the defrosting assembly 44, so that the defrosting assembly 44 executes the switch control instruction, thereby completing the defrosting operation on the frost block 430 on the evaporator 43 in the air cooler. The switch control instruction comprises an opening control instruction and a closing control instruction.
Further, the specific steps of this step are as follows:
firstly, if the frosting information indicates that the preset thickness defrosting condition is achieved, the first photosensitive switch is controlled to be switched off, and a starting control instruction is sent to the defrosting assembly.
If it is determined that the frosting information indicates that the preset thickness frosting condition is reached, which means that the second photosensitive switch K2 is closed, the first photosensitive switch K1 needs to be controlled to be opened so that the next light irradiates the first photosensitive switch K1, and the first photosensitive switch K1 can send a first on signal through closing. The frosting information indicates that the preset thickness defrosting condition is achieved, and also indicates that defrosting needs to be performed on the evaporator 43, so that an opening control instruction needs to be generated and sent to the defrosting assembly 44, and the defrosting assembly 44 is controlled to perform defrosting operation on the frost block 430.
Secondly, if the frosting information shows that frosting is not generated, the second photosensitive switch is controlled to be switched off, and a closing control instruction is sent to the defrosting component.
If it is determined that the frosting information indicates that frosting is not performed, it means that the first photosensitive switch K1 is closed, and it is necessary to control the second photosensitive switch K2 to be opened, so that the second photosensitive switch K2 can send a second on signal through closing the second photosensitive switch K2 next time light irradiates. The frosting information indicates that frosting is not generated, and further indicates that the evaporator 43 is not frosted or the frost block 430 is finished, and defrosting of the evaporator 43 is no longer needed, so that a closing control instruction needs to be generated and sent to the defrosting assembly 44, and the defrosting assembly 44 is controlled to stop working.
In this embodiment, a plurality of groups of defrosting detection devices 31 can be arranged, and each group of defrosting detection devices 31 all work in a parallel mode, and when foreign matter shielding or other abnormal conditions cause failure of a certain group of defrosting detection devices 31, the rest defrosting detection devices 31 also play a role in controlling defrosting start and stop, so that more accurate monitoring and control can be performed.
According to the defrosting control method for the air cooler, the sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter is obtained in real time; analyzing the induction signal to determine frosting information corresponding to the induction signal; and controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler. By adopting the technical scheme of the invention, the light emitted by the light emitter passes through the evaporator in the air cooler to irradiate the light receiving assembly, whether the light is refracted or not is judged through the feedback of the light receiving assembly, and the frosting information is determined, so that the frosting condition on the evaporator is monitored, the defrosting accuracy is improved, the problem of incomplete defrosting or no defrosting is avoided, and the energy is saved.
In this embodiment, a specific execution flow of the air-cooler defrosting control method applied to the air-cooler unit is as follows:
when the unit is started and operated, no frost is formed on the fins of the evaporator 43, the light emitted by the light emitter 311 is normally emitted, the first photosensitive switch K1 at the frost-free irradiation position is closed, the second photosensitive switch K2 at the to-be-defrosted irradiation position is opened, at this time, no frost layer exists in the unit, and the defrosting assembly 44 is in a closed state, so that defrosting operation is not required.
When the unit operates for a period of time, the fins of the evaporator 43 begin to frost, the light emitted by the light emitter 311 is refracted by the frost block 430 formed on the evaporator 43, and as the thickness of the frost block 430 gradually increases, the position irradiated by the light deviates from the frost-free irradiation position of the first photosensitive switch K1 and moves towards the to-be-defrosted irradiation position of the second photosensitive switch K2. When the thickness of the frost block 430 is larger than zero and smaller than the preset frost thickness, the position irradiated by the light is between the first photosensitive switch K1 and the second photosensitive switch K2, and neither the first photosensitive switch K1 nor the second photosensitive switch K2 receives the light, so that the first photosensitive switch K1 maintains the current closed state, and the second photosensitive switch K2 maintains the current open state. At this time, the thickness of the frost block 430 does not reach the preset defrosting thickness, that is, the defrosting condition of the preset thickness is not reached, and the defrosting assembly 44 of the unit is still in the closed state.
Along with the increase of the running time of the unit, the frost block 430 gradually becomes thicker, when the thickness of the frost block 430 reaches the preset defrosting thickness, light rays are refracted by the frost block 430 and then reach the position, where the second photosensitive switch K2 is located, of the to-be-defrosted irradiation position, the second photosensitive switch K2 is closed after receiving the light rays, and then the first photosensitive switch K1 is controlled to be opened. At this time, the unit reaches the condition of defrosting with a preset thickness, and sends a starting control instruction to the defrosting assembly 44 to start defrosting.
With the defrosting operation of the defrosting assembly 44, the defrosting block 430 becomes thinner gradually, the refraction influence on the light is reduced, the light deviates from the irradiation position to be defrosted where the second photosensitive switch K2 is located and moves towards the frost-free irradiation position where the first photosensitive switch K1 is located, the light is located between the first photosensitive switch K1 and the second photosensitive switch K2, the first photosensitive switch K1 and the second photosensitive switch K2 both cannot receive the light, the second photosensitive switch K2 maintains the current on-off state, and the first photosensitive switch K1 maintains the current off-off state. At the moment, the unit is not defrosted completely, namely, the defrosting stop condition is not reached, and the unit is still in the defrosting mode state.
When the thickness of the frost block 430 is zero, it is described that the frost block 430 is completely melted, the light does not have the refraction effect of the frost block 430, and irradiates the frost-free irradiation position, the first photosensitive switch K1 is closed after receiving the light, and controls the second photosensitive switch K2 to be opened, so as to send a closing control instruction to the defrosting assembly 44, and the defrosting assembly 44 stops defrosting. At this time, the unit is completely defrosted without the frost block 430, the defrosting stop condition is reached, the defrosting mode operation is stopped, and excessive defrosting is prevented.
Further, the air cooler defrosting control method of the embodiment further includes the following steps:
firstly, when the air cooler is started for the first time, whether a first conduction signal sent after the first photosensitive switch receives light closing is obtained is judged.
When the air cooler is started for the first time, the evaporator 43 is certainly not frosted, and then it is required to determine whether a first conduction signal sent after the first light-sensitive switch K1 is closed due to the fact that light is received is obtained.
And secondly, if the first conduction signal is not acquired, generating fault alarm information, and sending the fault alarm information to a preset alarm device so that a user can check the fault alarm information output by the alarm device.
If the first on information is not obtained, it indicates that the first photo switch K1 does not receive the light from the light emitter 311, which may be because the fin of the evaporator 43 has foreign matter blocking the light, or because the light emitter 311 or the first photo switch K1 has failed. Therefore, it is necessary to generate fault alarm information and send the fault alarm information to a preset alarm device, so that a user can check the fault alarm information output by the alarm device and perform fault processing in time.
Further, as shown in fig. 2, the air cooler defrosting control system applying the air cooler defrosting control method in the embodiment further includes a light receiving plate 33. The light receiving plate 33 is disposed on the evaporator air blowing side B, and the light receiving elements 312 are each disposed on the light receiving plate 33. The first photosensitive switch K1 and the second photosensitive switch K2 are not shown on the light receiving plate 33 in fig. 2, but only for the sake of better clarity of viewing the components in the drawing, in practice, the first photosensitive switch K1 and the second photosensitive switch K2 are disposed on the light receiving plate 33. The first photo switch K1 is a frost-free irradiation position provided on the light receiving plate 33, and the second photo switch K2 is a to-be-defrosted irradiation position provided on the light receiving plate 33.
Fig. 3 is a flowchart provided by another embodiment of the defrosting control method for an air cooler of the present invention. Since the frost formation of the evaporator 43 is not necessarily uniform, the frost formation degree is not necessarily ice, when the frost block 430 is snow-like, the light is difficult to be refracted and is refracted to an ideal position, and when the frost formation occurs, comprehensive judgment is needed to determine the frost formation of the air cooler.
As shown in fig. 2 and fig. 3, the air cooler defrosting control method of the present embodiment further includes the following steps:
S201, light sensing information sent by the light receiving board after receiving the light emitted by the light emitter is obtained in real time.
In this embodiment, the light receiving plate 33 may receive the light emitted from the light emitter 311 and sense the irradiation position of the received light. Therefore, it is necessary to acquire light sensing information transmitted by the light receiving plate 33 after receiving the light emitted from the light emitter 311 in real time. The light sensing information may include the irradiation position of the light sensed by the light receiving plate 33.
S202, if the induction signal and the light induction information are not acquired, calculating the current starting operation time of the air cooler according to the pre-recorded starting time and the current time.
If the unit is started and operated for a period of time, the sensing signal sent by the light receiving component 312 and the light sensing information sent by the light receiving plate 33 are not obtained in this embodiment, it is indicated that the first photosensitive switch K1, the second photosensitive switch K2 and the light receiving plate 33 cannot receive light, and then the current start-up operation duration of the air cooler needs to be calculated according to the pre-recorded start-up time and the current time. And the current starting-up operation time length is the time length of the interval between the starting-up time and the current time.
S203, judging whether the current starting operation time length is less than a preset defrosting time length; if yes, go to step S204; if not, go to step S206.
In this embodiment, the calculated current startup operation time length and the preset defrosting time length need to be compared, whether the current startup operation time length is less than the preset defrosting time length or not is determined, if the current startup operation time length is determined to be less than the preset defrosting time length, step S204 is executed, and if the current startup operation time length is determined to be not less than the preset defrosting time length, step S206 is executed. The preset defrosting time is the specific time when the evaporator 43 is frosted but does not form ice blocks under the specific operation condition.
And S204, acquiring the current temperature of the refrigeration house where the air cooler is located.
And if the current starting operation time is shorter than the preset defrosting time, acquiring the current temperature of the refrigeration house where the air cooler is located.
S205, judging whether the current starting operation time length and the current warehouse temperature meet preset warehouse temperature defrosting conditions or not; if yes, go to step S206, otherwise go to step S202.
In this embodiment, a preset reservoir temperature defrosting condition for determining whether defrosting is required according to the reservoir temperature and the start-up operation time is preset. In this embodiment, it is required to determine whether the current startup operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, and if the current startup operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, the step S206 is executed; and if the current starting operation time length and the current warehouse temperature do not meet the preset warehouse temperature defrosting condition, executing the step S202.
And S206, sending an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened.
And if the current starting operation time length and the current reservoir temperature meet the preset reservoir temperature defrosting condition, generating a starting control instruction, and sending the starting control instruction to the defrosting assembly so as to control the defrosting assembly to be started.
Or the current starting-up operation time is not less than the preset defrosting time, which indicates that the light is not received by the light receiving assembly 312 and the light receiving plate 33 because the surface of the frost block 430 is not smooth and the light is shifted to an incorrect position, at this moment, an opening control instruction needs to be generated and sent to the defrosting assembly to control the opening of the defrosting assembly. Thus, when the surface of the frost block 430 is not smooth, defrosting can be realized, and defrosting accuracy is improved.
Further, before executing step S101, the air cooler defrosting control method of this embodiment further includes the following steps:
first, according to the light sensing information, it is determined whether the current light position of the light received by the light receiving plate is within the sensing range of the light receiving assembly.
In this embodiment, it is further required to determine whether the current light position of the light received by the light receiving plate 33 is within the sensing range of the light receiving assembly 312 according to the light sensing information sent by the light receiving plate 33. The sensing range of the light receiving assembly 312 is the area between the frostless irradiation position where the first photosensitive switch K1 is located and the irradiation position to be defrosted where the second photosensitive switch K2 is located.
Secondly, if the current light position is not in the sensing range of the light receiving assembly, an opening control instruction is sent to the defrosting assembly to control the defrosting assembly to be opened.
If the current light position is determined not to be within the sensing range of the light receiving assembly 312, it is determined that neither the first photoswitch K1 nor the second photoswitch K2 can receive light, but the light receiving plate 33 can receive light, and it is considered that the defrosting needs to be started because the light is shifted to the wrong position on the light receiving plate 33 due to the unsmooth surface of the frost block 430. Therefore, an opening control instruction needs to be generated and sent to the defrosting assembly so as to control the defrosting assembly to be opened. Thus, when the position of the light is shifted due to the unsmooth surface of the frost 430, defrosting can be realized, and the defrosting accuracy is improved.
If the current light position is within the sensing range of the light receiving element 312, the step S101 is continuously executed.
In order to be more comprehensive, the application also provides an air cooler defrosting control device corresponding to the air cooler defrosting control method provided by the embodiment of the invention.
Fig. 4 is a schematic structural diagram provided in an embodiment of the air-cooler defrosting control device of the present invention, and as shown in fig. 4, the air-cooler defrosting control device of this embodiment is applied to an air-cooler defrosting control system, and the air-cooler defrosting control system includes: at least one set of frost detection means 31; the defrosting detection device 31 includes: a light emitter 311 disposed on the evaporator air intake side a and a light receiving assembly 312 disposed on the evaporator air delivery side B.
The air-cooler controlling means that defrosts of this embodiment includes:
the acquisition module 11 is used for acquiring an induction signal sent by the light receiving assembly after receiving the light emitted by the light emitter in real time;
the signal analysis module 12 is configured to analyze the sensing signal and determine frosting information corresponding to the sensing signal;
and the control module 13 is used for controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to the preset defrosting assembly so as to control the defrosting assembly to defrost the evaporator in the air cooler.
The air-cooler of this embodiment control device that defrosts, the light that light emitter 311 launched shines light receiving component 312 through evaporimeter 43 in the air-cooler, and through light receiving component 312's feedback, whether refraction takes place for judgement light, confirms the information that frosts to the monitoring of the condition of frosting on the evaporimeter 43 is realized, has improved the degree of accuracy of defrosting, has avoided the problem that the frost is not thorough or frost-free defrosting, has practiced thrift the energy.
Further, in the present embodiment, the light receiving assembly 312 includes: a first photo switch K1 disposed at a frost-free irradiation position and a second photo switch K2 disposed at a to-be-defrosted irradiation position.
The signal analysis module 12 is specifically configured to: if the sensing signal is a first conduction signal sent by the first photosensitive switch K1 after the first photosensitive switch receives the light closing, it is determined that the frosting information corresponding to the sensing signal indicates that frosting does not occur; if the sensing signal is a second conduction signal sent by the second photosensitive switch K2 after the light is closed, it is determined that the frosting information corresponding to the sensing signal indicates that the preset thickness defrosting condition is achieved.
Further, in this embodiment, the switch control command includes: an open control command and a close control command. The control module 13 is specifically configured to: if the frosting information indicates that the defrosting condition with the preset thickness is achieved, the first photosensitive switch K1 is controlled to be switched off, and a starting control instruction is sent to the defrosting assembly 44; if the frosting information indicates that frosting is not generated, the second photosensitive switch K2 is controlled to be turned off, and a turn-off control command is sent to the defrosting assembly 44.
Further, the air-cooler defrosting control device of this embodiment still includes: the device comprises a judging module and a fault information generating module.
The judging module is used for judging whether a first conducting signal sent by the first photosensitive switch after the first photosensitive switch receives the light closing is obtained or not when the air cooler is started for the first time;
and the fault information generation module is used for generating fault alarm information if the first conduction signal is not acquired, and sending the fault alarm information to a preset alarm device so that a user can check the fault alarm information output by the alarm device.
Further, in this embodiment, the air-cooler defrosting control system further includes: a light receiving plate disposed on a blowing side of the evaporator; the light receiving assembly is disposed on the light receiving plate.
The air-cooler defrosting control device of this embodiment still includes: and a calculation module.
The acquisition module 11 is further configured to acquire light sensing information sent by the light receiving board after receiving the light emitted by the light emitter in real time;
the calculation module is used for calculating the current starting operation time of the air cooler according to the pre-recorded starting time and the current time if the sensing signal and the light sensing information are not acquired;
the judging module is used for judging whether the current starting operation time length is less than the preset defrosting time length or not;
the judging module is also used for acquiring the current warehouse temperature of the refrigeration warehouse where the air cooler is located if the current starting operation time length is less than the preset defrosting time length, and judging whether the current starting operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition or not;
the control module 13 is further configured to send an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened if the current starting operation time length and the current reservoir temperature meet the preset reservoir temperature defrosting condition, or the current starting operation time length is not less than the preset defrosting time length.
Further, in the air cooler defrosting control device of this embodiment, the determining module is further configured to determine, according to the light sensing information, whether the current light position of the light received by the light receiving plate is within a sensing range of the light receiving assembly;
the control module 13 is further configured to send a start control instruction to the defrosting assembly to control the defrosting assembly to start if the current light position is not within the sensing range of the light receiving assembly;
the obtaining module 11 is specifically configured to obtain, in real time, a sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter if the current light position is within a sensing range of the light receiving assembly.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 5 is a schematic structural diagram provided in an embodiment of the air-cooler defrosting control apparatus of the present invention, and as shown in fig. 5, the air-cooler defrosting control apparatus of the present embodiment includes: a processor 21 and a memory 22 connected to the processor 21. The memory 22 is used for storing a computer program, and the computer program is at least used for executing the air cooler defrosting control method in the above embodiment. The processor 21 is used to invoke and execute computer programs.
The air-cooler of this embodiment control equipment that defrosts, the light that light emitter 311 launched shines light receiving component 312 through evaporimeter 43 in the air-cooler, and through light receiving component 312's feedback, whether refraction takes place for judgement light, confirms the information of frosting to the monitoring of the condition of frosting on the evaporimeter 43 is realized, has improved the degree of accuracy of defrosting, has avoided the problem that the frost is not thorough or frost-free defrosting, has practiced thrift the energy.
FIG. 6 is a block diagram of the electrical circuitry provided by one embodiment of the air cooler defrosting control system of the present invention; as shown in fig. 2 and fig. 6, the air cooler defrosting control system of the present embodiment includes: at least one group of defrosting detection device 31 and the air cooler defrosting control device 32; the defrosting detection device 31 includes: a light ray emitter 311 arranged on the air inlet side A of the evaporator and a light ray receiving component 312 arranged on the air outlet side B of the evaporator; the light emitter 311 and the light receiving assembly 312 are respectively connected with the air cooler defrosting control device 32. The air cooler defrosting control device 32 can control the light emitter 311 to emit light, receive the sensing signal sent by the light receiving component 312, and control the light receiving component 312 to work and send a switch control instruction to the defrosting component 44.
In this embodiment, a plurality of groups of defrosting detection devices 31 can be arranged, and each group of defrosting detection devices 31 all work in a parallel mode, and when foreign matter shielding or other abnormal conditions cause failure of a certain group of defrosting detection devices 31, the rest defrosting detection devices 31 also play a role in controlling defrosting start and stop, so that more accurate monitoring and control can be performed.
The air-cooler defrosting control system of this embodiment, the light that light emitter 311 launches passes evaporimeter 43 and shines light receiving component 312 in the air-cooler, and through light receiving component 312's feedback, whether refraction takes place for light judgement, confirms frosting information to the monitoring of the frosting condition on the evaporimeter 43 is realized, has improved the degree of accuracy of defrosting, has avoided the problem that the frost is not thorough or frost-free defrosting, has practiced thrift the energy.
Further, in the air cooler defrosting control system of this embodiment, the light receiving assembly 312 includes: a first photosensitive switch K1 disposed at a frost-free irradiation position and a second photosensitive switch K2 disposed at a to-be-defrosted irradiation position; the first photosensitive switch K1 and the second photosensitive switch K2 are respectively connected with the air cooler defrosting control device 32; the frost-free irradiation position is a position determined according to the light emission angle of the light emitter 311 and the preset distance between the first photosensitive switch K1 and the evaporator 43 in the air cooler; the irradiation position to be defrosted is a position determined according to the preset defrosting thickness, the preset refractive index and the frostless irradiation position.
Further, the air-cooler defrosting control system of this embodiment still includes: a light receiving plate 33 provided on the air blowing side B of the evaporator; the light receiving member 312 is disposed on the light receiving plate 33; the light receiving board 33 is connected to the air-cooler defrosting control apparatus 32.
Fig. 7 is a block diagram of an air cooler according to an embodiment of the present invention. As shown in fig. 7 and 2, the air-cooler of the present embodiment includes: the housing 41, the evaporator 43, the defrosting assembly 44 and the air cooler defrosting control system 42 of the above embodiment; the evaporator 43, the defrosting assembly 44 and the air cooler defrosting control system 42 are all arranged inside the shell 41; the defrosting assembly 44 is connected to the air cooler defrosting control system 42.
The air-cooler of this embodiment, the light that light emitter 311 launches passes evaporimeter 43 and shines light receiving element 312 in the air-cooler, and through light receiving element 312's feedback, whether refraction takes place for light judgement, confirms frosting information to the monitoring of the frosting condition on the evaporimeter 43 is realized, has improved the degree of accuracy of defrosting, has avoided the problem that the defrosting is not thorough or frost-free, has practiced thrift the energy.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, the meaning of "a plurality" means at least two unless otherwise specified.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides an air-cooler defrosting control system which characterized in that includes: at least one group of defrosting detection devices and an air cooler defrosting control device;
the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator;
the light receiving assembly includes: the first photosensitive switch is arranged at a frost-free irradiation position, and the second photosensitive switch is arranged at a to-be-defrosted irradiation position; the first photosensitive switch and the second photosensitive switch are respectively connected with the air cooler defrosting control equipment; the frost-free irradiation position is determined according to the light emission angle of the light emitter and the preset distance between the first photosensitive switch and the evaporator in the air cooler; the irradiation position to be defrosted is a position determined according to a preset defrosting thickness, a preset refractive index and the frostless irradiation position;
the light ray emitter and the light ray receiving assembly are respectively connected with the air cooler defrosting control equipment; the air cooler defrosting control device is used for realizing the following method:
acquiring a sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter in real time;
Analyzing the induction signal to determine frosting information corresponding to the induction signal;
and controlling the light receiving assembly to work according to the frosting information, and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler.
2. The air cooler defrosting control system of claim 1,
the analyzing the sensing signal to determine frosting information corresponding to the sensing signal includes:
if the sensing signal is a first conducting signal sent by the first photosensitive switch after the first photosensitive switch receives the light closing, it is determined that frosting information corresponding to the sensing signal indicates that frosting is not generated;
and if the sensing signal is a second conducting signal sent by the second photosensitive switch after the second photosensitive switch receives the light closing, determining that the frosting information corresponding to the sensing signal indicates that the frosting condition with the preset thickness is achieved.
3. The air cooler defrosting control system of claim 2 wherein the switch control instructions comprise: opening a control instruction and closing the control instruction;
according to the frosting information, control light receiving component work to the defrosting subassembly that sets up in advance sends the switch control instruction, include:
If the frosting information shows that the defrosting condition with the preset thickness is achieved, the first photosensitive switch is controlled to be switched off, and the starting control instruction is sent to the defrosting assembly;
and if the frosting information shows that frosting is not generated, the second photosensitive switch is controlled to be switched off, and the turn-off control instruction is sent to the defrosting assembly.
4. The air cooler defrosting control system of claim 2 further comprising:
when the air cooler is started for the first time, whether a first conduction signal sent by the first photosensitive switch after the first photosensitive switch receives the light closing is obtained or not is judged;
if the first conduction signal is not acquired, generating fault alarm information, and sending the fault alarm information to a preset alarm device so that a user can check the fault alarm information output by the alarm device.
5. The air cooler defrosting control system of claim 1 further comprising: a light receiving plate disposed on the air supply side of the evaporator; the light receiving assembly is arranged on the light receiving plate;
the defrosting control method for the air cooler further comprises the following steps:
acquiring light sensing information sent by the light receiving plate after receiving the light emitted by the light emitter in real time;
If the sensing signal and the light sensing information are not acquired, calculating the current starting operation time of the air cooler according to the pre-recorded starting time and the current time;
judging whether the current starting-up operation time length is less than a preset defrosting time length or not;
if the current starting operation time length is less than the preset defrosting time length, acquiring the current storage temperature of the refrigeration storage where the air cooler is located, and judging whether the current starting operation time length and the current storage temperature meet the preset storage temperature defrosting condition;
if the current starting operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, or the current starting operation time length is not less than the preset defrosting time length, sending an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened.
6. The air cooler defrosting control system according to claim 5, wherein before the real-time acquisition of the sensing signal sent by the light receiving assembly after receiving the light emitted by the light emitter, the air cooler defrosting control system further comprises:
judging whether the current light ray position of the light ray received by the light receiving plate is within the sensing range of the light ray receiving assembly or not according to the light ray sensing information;
If the current light position is not in the sensing range of the light receiving assembly, sending an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened;
correspondingly, the real-time induction signal who sends after obtaining the light that light receiving component received the light transmitter transmission includes:
and if the current light ray position is within the sensing range of the light ray receiving assembly, acquiring a sensing signal sent by the light ray receiving assembly after receiving the light ray emitted by the light ray emitter in real time.
7. The utility model provides an air-cooler defrosting controlling means is applied to air-cooler defrosting control system, its characterized in that, air-cooler defrosting control system includes: at least one set of defrosting detection devices; the defrosting detection device includes: the light ray receiving assembly is arranged on the air supply side of the evaporator;
the light receiving assembly includes: the first photosensitive switch is arranged at a frost-free irradiation position, and the second photosensitive switch is arranged at a to-be-defrosted irradiation position; the frost-free irradiation position is determined according to the light emission angle of the light emitter and the preset distance between the first photosensitive switch and the evaporator in the air cooler; the irradiation position to be defrosted is a position determined according to a preset defrosting thickness, a preset refractive index and the frostless irradiation position;
Air-cooler defrosting controlling means includes:
the acquisition module is used for acquiring a sensing signal sent by the light ray receiving assembly after receiving the light ray emitted by the light ray emitter in real time;
the signal analysis module is used for analyzing the induction signals and determining frosting information corresponding to the induction signals;
and the control module is used for controlling the light receiving assembly to work according to the frosting information and sending a switch control instruction to a preset defrosting assembly so as to control the defrosting assembly to defrost an evaporator in the air cooler.
8. The air-cooler defrosting control apparatus of claim 7 further comprising: a light receiving plate disposed on the air supply side of the evaporator; the light receiving assembly is arranged on the light receiving plate;
the air-cooler defrosting control device still includes: a calculation module and a judgment module;
the acquisition module is further used for acquiring light sensing information sent by the light receiving board after receiving the light emitted by the light emitter in real time;
the calculation module is used for calculating the current starting operation time of the air cooler according to the pre-recorded starting time and the current time if the sensing signal and the light sensing information are not acquired;
The judging module is used for judging whether the current starting-up operation time length is less than a preset defrosting time length or not;
the judging module is further configured to obtain a current storage temperature of the refrigeration storage where the air cooler is located if the current startup operation time length is less than the preset defrosting time length, and judge whether the current startup operation time length and the current storage temperature meet a preset storage temperature defrosting condition;
the control module is further configured to send an opening control instruction to the defrosting assembly to control the defrosting assembly to be opened if the current starting operation time length and the current warehouse temperature meet the preset warehouse temperature defrosting condition, or the current starting operation time length is not less than the preset defrosting time length.
9. An air cooler, characterized by comprising: a housing, an evaporator, a defrosting assembly, and the air cooler defrosting control system of any one of claims 1-6;
the evaporator, the defrosting assembly and the air cooler defrosting control system are all arranged inside the shell;
the defrosting assembly is connected with the air cooler defrosting control system.
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| CN114812027B (en) * | 2022-05-19 | 2023-12-01 | 合肥美的电冰箱有限公司 | Defrosting control method, frost layer detection device, evaporator and refrigeration equipment |
| CN117404846B (en) * | 2023-12-12 | 2024-05-03 | 珠海格力电器股份有限公司 | Refrigerator, control method thereof, refrigerator system control device and storage medium |
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