CN115289778A - Temperature and humidity control method and device for medicine refrigerating box - Google Patents
Temperature and humidity control method and device for medicine refrigerating box Download PDFInfo
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- CN115289778A CN115289778A CN202210986305.9A CN202210986305A CN115289778A CN 115289778 A CN115289778 A CN 115289778A CN 202210986305 A CN202210986305 A CN 202210986305A CN 115289778 A CN115289778 A CN 115289778A
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- 238000010257 thawing Methods 0.000 description 7
- 238000005057 refrigeration Methods 0.000 description 4
- 229960005486 vaccine Drugs 0.000 description 4
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
Abstract
The application provides a temperature and humidity control method for a medicine refrigerating box, which comprises the following steps: calculating the operating parameters of the actuating mechanism according to the ambient temperature outside the medicine refrigerating box; detecting whether the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value, if not, adjusting the operating parameters of an actuating mechanism, and if so, maintaining the operating parameters of the current actuating mechanism; detecting whether the internal humidity of the current medicine refrigerating box is larger than or equal to a first humidity threshold value and smaller than or equal to a second humidity threshold value, if not, adjusting the operating parameters of the executing mechanism, and if so, maintaining the operating parameters of the current executing mechanism. The application also provides a temperature and humidity control device of the medicine refrigerating box, which comprises a controller, a sensor and an actuating mechanism, wherein the sensor and the actuating mechanism are electrically connected with the controller. The temperature and the humidity in the box are controlled by controlling the running time of the compressor and the running time of the fan, and the temperature and the humidity are maintained in the optimal range meeting the GSP standard requirement, so that the method is economical, energy-saving and efficient.
Description
Technical Field
The application relates to the technical field of refrigeration, in particular to a temperature and humidity control method and device for a medicine refrigerating box.
Background
As vaccine production rates proliferate, the demand for vaccine storage facilities also grows. The storage period of the vaccine storage equipment is an important index for measuring the reliability of the product, and the vaccine can be stored for 3 years under the storage condition at the temperature of 2-8 ℃ by taking the domestic development Kexing Zhongwei as an example. The medicine refrigerating box is used as medicine storing equipment and has the functions of refrigerating and maintaining constant temperature. The medicine refrigerating box is widely applied to hospitals, drugstores, laboratory detection, biological agent rooms, clinical laboratories, disease control centers and the like due to the powerful functions and high-efficiency practicability. According to the instructions in the detailed rules for the implementation of the pharmaceutical business quality management standards, enterprises should reasonably store the drugs according to the characteristics of the drugs and meet the following requirements: storing the medicines according to the temperature requirement marked by the package, storing the medicines according to the storage requirement specified in the pharmacopoeia of the people's republic of China without marking the specific temperature on the package, and requiring the temperature for storing the medicines to be 2-8 ℃ and the relative humidity for storing the medicines to be 35-75 percent for a medicine refrigerating box for storing the medicines in a pharmacy.
The temperature and the humidity in the medicine refrigerating box are important indexes influencing the medicine preservation quality, compared with a more mature temperature control technology, the humidity control of air in the box is very important in medical products, and the excessive water vapor content can be condensed and frosted in the refrigerator to influence the reliability of stored articles of a client. For the medicine refrigerating box adopting the refrigeration mode of direct air cooling, the defrosting mode adopts the compressor to stop to defrost, the inner wall of the box body is frozen to cause customer complaints due to over short defrosting time, and the humidity in the box body exceeds 75 percent due to over long defrosting time, so that the medicine refrigerating box does not conform to the new GSP standard and cannot meet the product requirements.
Patent CN105318648A discloses a humidity control method for a refrigerator, which comprises a control system, an evaporation fan and a refrigeration cycle system, wherein a temperature and humidity signal collected by a temperature and humidity sensor is transmitted to a single chip microcomputer control circuit, the single chip microcomputer control circuit outputs an evaporation fan control signal according to a set temperature and humidity requirement, and the humidity in the refrigerator is adjusted by controlling the wind speed of the evaporation fan. However, the method provided by the patent cannot simultaneously regulate and control the temperature and the humidity in the refrigerating box, is not accurate enough, and cannot meet the strict requirements of the new GSP specification on the temperature and the humidity of the medicine storage equipment.
Therefore, in order to solve the above problems and further satisfy the storage and reliability requirements of users, a method and a device for controlling temperature and humidity of a medicine refrigerator are urgently needed to be researched to realize that the internal temperature of the refrigerator body is always constant within the optimal temperature range and the humidity in the refrigerator body is also always constant within the optimal humidity range so as to ensure that the stored medicine does not lose efficacy.
Disclosure of Invention
The application aims to provide a temperature and humidity control method for a medicine refrigerating box, so as to overcome the defect that the medicine refrigerating box in the prior art cannot control the temperature and the humidity in the box at the same time and cannot ensure that the environment in the refrigerating box meets the new GSP specification at any time.
The technical purpose is realized by the following scheme:
in one aspect, the present application provides a temperature and humidity control method for a drug refrigerator, where the temperature and humidity control method includes the following steps:
presetting a first temperature threshold, a second temperature threshold, a first humidity threshold and a second humidity threshold;
acquiring the ambient temperature outside the medicine refrigerating box;
calculating the operating parameters of the actuating mechanism according to the ambient temperature outside the medicine refrigerating box;
detecting whether the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operating parameters of the actuating mechanism, and re-executing the step of detecting whether the internal temperature of the current medicine refrigerating box is larger than or equal to the first temperature threshold value and smaller than or equal to the second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold, maintaining the operation parameters of the current actuating mechanism, and detecting whether the internal humidity of the current medicine refrigerating box is greater than or equal to a first humidity threshold and less than or equal to a second humidity threshold;
if the internal humidity of the current medicine refrigerating box is smaller than the first humidity threshold value or larger than the second humidity threshold value, adjusting the operation parameters of the executing mechanism, and re-executing the step of detecting whether the internal humidity of the current medicine refrigerating box is larger than or equal to the first humidity threshold value and smaller than or equal to the second humidity threshold value;
if the internal humidity of the current medicine refrigerating box is greater than or equal to a first humidity threshold value and less than or equal to a second humidity threshold value, maintaining the operation parameters of the current actuating mechanism;
and returning to the step of acquiring the ambient temperature outside the medicine refrigerating box.
This application compares in traditional air-cooled refrigerator, uses the mode of compressor and fan simultaneous working to avoid shutting down through the compressor and changing frost, and the controller is when carrying out temperature control, through receiving incasement humidity signal, controls opening or closing of fan and adjusts the humidity in the fridge: if the humidity needs to be reduced, the controller reduces the running time of the fan by outputting an instruction so as to enable the humidity inside the box body to reach a proper range; if the humidity in the box needs to be increased, the controller prolongs the running time of the fan by outputting an instruction, and the stored defrosting water is evaporated to increase the humidity in the box.
Further, the executing mechanism comprises a compressor and a fan, and the operating parameters of the executing mechanism comprise a compressor starting parameter, a compressor stopping parameter, a fan delayed starting parameter and a fan delayed stopping parameter.
Further, the calculation formula of the operation parameters of the actuating mechanism is as follows:
T on ＝T 0 +a；
T off ＝T 0 -b；
t on ＝c；
T off ＝d；
in the formula: t is on To compressStarting up parameters of the machine when the temperature in the cold box rises to T on When the pressure exceeds the preset pressure, the controller controls the compressor to be started; t is off As a compressor shutdown parameter, when the temperature in the cold box drops to T off When the air conditioner is started, the controller controls the compressor to stop; t is 0 The default setting is 4 ℃ for the initial temperature constant.
t on The fan delay starting parameter represents the time of the fan delay starting when the compressor is started; t is t off The parameter is a fan delayed shutdown parameter and represents the time of the fan delayed shutdown when the compressor is shut down; a. b, c and d are iteration variables.
The value ranges of a, b, c and d are determined by the ambient temperature outside the medicine refrigerating box.
Further, if the internal temperature of the current medicine refrigerating box is less than the first temperature threshold or greater than the second temperature threshold, adjusting the operating parameters of the actuator comprises:
presetting initial values of an iteration variable a and an iteration variable b;
if the internal temperature of the current medicine refrigerating box is smaller than a first temperature threshold value, performing decreasing iteration on an iteration variable a and an iteration variable b, wherein the decreasing iteration can be performed in a mode of N = N-0.5;
and if the internal temperature of the current medicine refrigerating box is larger than the second temperature threshold value, performing incremental iteration on the iteration variable a and the iteration variable b, wherein the incremental iteration can be performed in a mode of N = N + 0.5.
Further, if the internal humidity of the current medicine refrigerating box is smaller than the first humidity threshold value or larger than the second humidity threshold value, adjusting the operating parameters of the actuating mechanism includes:
presetting initial values of an iteration variable c and an iteration variable d;
if the internal humidity of the current medicine refrigerating box is smaller than a first humidity threshold value, decreasing iteration is carried out on the iteration variable c, increasing iteration is carried out on the iteration variable d, wherein the increasing iteration can be carried out in a mode of N = N +1, and the decreasing iteration can be carried out in a mode of N = N-1;
if the internal humidity of the current medicine refrigerating box is larger than the second humidity threshold value, incremental iteration is carried out on the iteration variable c, and decremental iteration is carried out on the iteration variable d, wherein the incremental iteration can be carried out in a mode of N = N +1, and the decremental iteration can be carried out in a mode of N = N-1.
Further, the value range of the iterative variable is as follows:
when the ambient temperature is more than or equal to 25 ℃, the value range of a is 2-4 ℃, the value range of b is 0-1 ℃, the value range of c is 0-120s, and the value range of d is 0-120s;
when the ambient temperature is less than 25 ℃, the value range of a is 3-6, the value range of b is-1-2 ℃, the value range of c is 0-180s, and the value range of d is 0-60s.
Different iterative variable value ranges are set according to different swap-in temperatures, so that the temperature and the humidity in the refrigerator can be controlled in a target value range more easily.
On the other hand, the application also provides a temperature and humidity control device of the medicine refrigerating box, which is suitable for the temperature and humidity control method of the medicine refrigerating box, and the temperature and humidity control device comprises the following structures:
a controller;
a sensor electrically connected to the controller; the sensor is configured to acquire ambient temperature information outside the medicine refrigerating box and temperature information and humidity information inside the medicine refrigerating box and send the temperature information and the humidity information to the controller;
an actuator electrically connected to the controller;
the controller is configured to: and generating a control instruction for controlling the starting or stopping of the executing mechanism according to the temperature information and the humidity information.
Further, the sensor includes: an ambient temperature sensor, an in-box temperature sensor, and an in-box humidity sensor; the actuating mechanism comprises: a fan and a compressor; the fan is used for accelerating the evaporation of the defrosting water in the medicine refrigerating box so as to improve the humidity in the box, and the compressor is used for refrigerating so as to reduce the temperature in the box.
Further, the environment temperature sensor is arranged outside the medicine refrigerating box, and the in-box temperature sensor and the in-box humidity sensor are arranged on the inner side wall of the medicine refrigerating box in parallel, so that the real-time temperature and humidity in the refrigerating box can be detected most accurately.
Further, the temperature and humidity control device further comprises a display panel electrically connected with the controller and configured to display the ambient temperature, the in-box temperature and the in-box humidity. Through the information displayed on the display board, a user can visually monitor the real-time environment in the medicine refrigerating box, and further ensure that the humidity and the temperature in the box of the refrigerating box are in an ideal range at any time.
Compared with the prior art, the temperature and humidity control method and device for the medicine refrigerating box have the following beneficial effects:
the technical scheme provided by the application combines the compressor running time, the fan running time, the box internal temperature, the box internal humidity and other factors to establish a temperature and humidity control method, the compressor running time matched with the compressor rotating speed is searched through the box internal temperature to enable the box internal temperature to reach the optimal range, meanwhile, the fan running time matched with the fan rotating speed is searched through the box internal humidity, when the compressor starts running and stops refrigerating, the box internal humidity is maintained in the optimal range through delaying the fan rotating time to be opened or closed, the control method does not need to add any other equipment, the box internal temperature and humidity can meet the GSP standard requirements, meanwhile, the problem that the box inner wall is frozen or the refrigerating effect is poor is avoided, and the temperature and humidity control method is economic, energy-saving and efficient.
In addition, the medicine fridge that this application provided can set for different compressor start-stop parameters and fan start-stop parameters under according to different ambient temperature for box inside temperature and humidity can both be invariable in optimum range, help the extension of medicine shelf life.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart illustrating a temperature and humidity control method for a medicine refrigerator according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of a system for controlling temperature and humidity of a medicine refrigerator according to an embodiment of the present disclosure;
FIG. 3 is a front view of a partial configuration of a temperature and humidity control device for a medicine cooler according to an exemplary embodiment of the present disclosure;
fig. 4 is a sectional view of an internal structure of a temperature and humidity control device for a medicine refrigerator according to an embodiment of the present disclosure.
In the figure:
1-controller, 2-fan, 3-compressor, 4-ambient temperature sensor, 5-in-box temperature sensor, 6-in-box humidity sensor and 7-display board.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "upper," "middle," "outer," "inner," "circumferential" or positional relationship are used merely for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
In embodiment 1 of the present application, as shown in fig. 3 to 4, a temperature and humidity control device for a medicine refrigerator is provided, and the operation is implemented according to the flow shown in fig. 1 to 2.
A temperature and humidity control device of a medicine refrigerator comprises the following structures:
a controller 1;
a sensor electrically connected to the controller 1; the sensor is configured to acquire ambient temperature information outside the medicine refrigerator and temperature information and humidity information inside the medicine refrigerator and send the temperature information and humidity information to the controller 1;
an actuator electrically connected to the controller 1;
the controller 1 is configured to: and generating a control instruction for controlling the starting or stopping of the executing mechanism according to the temperature information and the humidity information.
Further, the sensor includes: an ambient temperature sensor 4, an in-box temperature sensor 5 and an in-box humidity sensor 6; the actuating mechanism comprises: a fan 2 and a compressor 3; the fan 2 is used for accelerating the evaporation of the frost water in the medicine refrigerator so as to improve the humidity in the refrigerator, and the compressor 3 is used for refrigerating so as to reduce the temperature in the refrigerator.
Further, the environment temperature sensor 4 is arranged outside the medicine refrigerating box, and the inside temperature sensor 5 and the inside humidity sensor 6 are arranged on the inside wall of the medicine refrigerating box in parallel.
Specifically, the temperature and humidity control device in this embodiment operates according to the following method:
presetting a first temperature threshold, a second temperature threshold, a first humidity threshold and a second humidity threshold;
acquiring the ambient temperature outside the medicine refrigerating box;
calculating the operating parameters of the actuating mechanism according to the ambient temperature outside the medicine refrigerating box;
detecting whether the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operation parameters of the executing mechanism, and re-executing the step of detecting whether the internal temperature of the current medicine refrigerating box is larger than or equal to the first temperature threshold value and smaller than or equal to the second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold and less than or equal to a second temperature threshold, maintaining the operation parameters of the current actuating mechanism, and detecting whether the internal humidity of the current medicine refrigerating box is greater than or equal to a first humidity threshold and less than or equal to a second humidity threshold;
if the internal humidity of the current medicine refrigerating box is smaller than the first humidity threshold value or larger than the second humidity threshold value, adjusting the operation parameters of the executing mechanism, and re-executing the step of detecting whether the internal humidity of the current medicine refrigerating box is larger than or equal to the first humidity threshold value and smaller than or equal to the second humidity threshold value;
if the internal humidity of the current medicine refrigerating box is greater than or equal to a first humidity threshold value and less than or equal to a second humidity threshold value, maintaining the operation parameters of the current execution mechanism;
and returning to the step of acquiring the ambient temperature outside the medicine refrigerating box.
Specifically, in the present embodiment, according to the storage requirements stipulated in the "pharmacopoeia of the people's republic of china", for the medicine cold storage box for pharmacy storing medicines, it is required that the temperature of medicine storage is 2 ℃ to 8 ℃, and the relative humidity of medicine storage is 35% rh to 75% rh, whereby the first temperature threshold is set to 2 ℃, the second temperature threshold is set to 8 ℃, the first humidity threshold is set to 35% rh, and the second humidity threshold is set to 75% rh.
Further, the executing mechanism comprises a compressor and a fan, and the operating parameters of the executing mechanism comprise a compressor starting parameter, a compressor stopping parameter, a fan delayed starting parameter and a fan delayed stopping parameter.
Further, the calculation formula of the operation parameters of the actuating mechanism is as follows:
T on ＝T 0 +a；
T off ＝T 0 -b；
t on ＝c；
T off ＝d；
in the formula: t is on For compressor starting parameters, T off For compressor shutdown parameters, t on For the fan delay opening parameter, t off For fan delayed shutdown parameters, T 0 As initial temperature constants, a, b, c, d are iterative variables;
the value ranges of a, b, c and d are determined by the ambient temperature outside the medicine refrigerating box.
Further, the value range of the iterative variable is as follows:
when the ambient temperature is more than or equal to 25 ℃, the value range of a is 2-4 ℃, the value range of b is 0-1 ℃, the value range of c is 0-120s, and the value range of d is 0-120s;
when the ambient temperature is less than 25 ℃, the value range of a is 3-6, the value range of b is-1-2 ℃, the value range of c is 0-180s, and the value range of d is 0-60s.
Specifically, in the present embodiment, the ambient temperature outside the medicine refrigerator is detected to be more than 25 ℃ by acquiring the real-time ambient temperature by the ambient temperature sensor 4, thereby setting a =2 ℃, b =0 ℃, c =60s, d =30s, t 0 Setting the initial temperature constant as 4 ℃ by default, and calculating the starting parameter of the compressor, the stopping parameter of the compressor, the delay starting parameter of the fan and the delay of the fan according to the initial temperature constantAnd (4) stopping the machine.
Further, if the internal temperature of the current medicine refrigerating box is less than the first temperature threshold or greater than the second temperature threshold, adjusting the operating parameters of the actuator comprises:
presetting initial values of an iteration variable a and an iteration variable b;
if the internal temperature of the current medicine refrigerating box is smaller than a first temperature threshold value, carrying out decreasing iteration on the iteration variable a and the iteration variable b;
and if the internal temperature of the current medicine refrigerating box is larger than the second temperature threshold value, performing incremental iteration on the iteration variable a and the iteration variable b.
Further, if the internal humidity of the current medicine refrigerating box is smaller than the first humidity threshold value or larger than the second humidity threshold value, adjusting the operating parameters of the actuating mechanism includes:
presetting initial values of an iteration variable c and an iteration variable d;
if the internal humidity of the current medicine refrigerating box is smaller than a first humidity threshold value, decreasing iteration is carried out on an iteration variable c, and increasing iteration is carried out on an iteration variable d;
and if the internal humidity of the current medicine refrigerating box is greater than the second humidity threshold value, performing incremental iteration on the iteration variable c, and performing decremental iteration on the iteration variable d.
Specifically, in this embodiment, the in-box temperature sensor 5 acquires the in-box temperature information, and determines whether the in-box temperature satisfies the target range of 2 ℃ to 8 ℃. If the temperature in the box is less than 2 ℃, carrying out descending iteration on the iteration variables a and b in a mode of N = N-0.5 until the temperature in the box is more than or equal to 2 ℃; and if the internal temperature is higher than 8 ℃, incrementally iterating the iteration variables a and b in a mode of N = N +0.5 until the internal temperature is lower than or equal to 8 ℃.
When the in-box temperature satisfies the target range of 2 ℃ to 8 ℃, the in-box humidity information is acquired by the in-box humidity sensor 6, and it is determined whether the in-box humidity satisfies the target range of 35% RH to 75% RH. If the in-box humidity is less than 35% RH, performing decreasing iteration on the iteration variable c in a manner of N = N-1, and performing increasing iteration on the iteration variable d in a manner of N = N +1 until the in-box humidity is more than or equal to 35%; if the in-box humidity is greater than 75% RH, incrementally iterating the iteration variable c by N = N +1 while incrementally iterating the iteration variable d by N = N-1 until the in-box humidity is less than or equal to 75% RH.
The working principle of the embodiment is as follows: when the controller obtains a signal that the temperature in the refrigerator is higher, the starting and stopping temperature of the compressor is adjusted, and the starting time of the compressor is prolonged to enable the temperature in the refrigerator to reach a target value; judging whether the humidity in the box is in a target humidity range or not; if the humidity in the box is lower, the defrosting water is accelerated to evaporate under the action of the rotation of the fan to improve the humidity in the box by increasing the delay shutdown time of the fan. When the controller obtains a signal that the temperature in the refrigerator is low, the starting-up time of the compressor is shortened by adjusting the starting-up and stopping temperature of the compressor so as to enable the temperature in the refrigerator to reach a target value; at the moment, judging whether the humidity in the box is in a target humidity range or not; if the humidity in the refrigerator is higher, the fan is turned on as much as possible by prolonging the starting delay time of the fan when the refrigeration system is turned on after the defrosting water flows out, so that the temperature in the refrigerator can be in a target range, and the humidity in the refrigerator can be in the target range.
In some other embodiments based on embodiment 1, the temperature and humidity control device for a medicine refrigerator provided by the present application may further include a display panel 7, as shown in fig. 3-4, wherein the display panel 7 is electrically connected to the controller 1 and integrated with the ambient temperature sensor 4. The display panel 7 is configured to display the ambient temperature, the in-box temperature and the in-box humidity, and through the information displayed on the display panel, a user can visually monitor the real-time environment in the medicine refrigerator, further ensuring that the in-box humidity and the in-box temperature of the refrigerator are within an ideal range at any time.
On the basis, the display panel 7 can be further improved, the display panel 7 is set to be a human-computer interaction interface, a user can set a temperature and humidity target range in the medicine refrigerating box according to different requirements, and initial values of a compressor starting parameter, a compressor stopping parameter, a fan delayed starting parameter and a fan delayed stopping parameter are adjusted according to use experience.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the application are all or partially generated when the computer program instructions are loaded and executed on a computer.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The temperature and humidity control method for the medicine refrigerating box is characterized by comprising the following steps of:
presetting a first temperature threshold, a second temperature threshold, a first humidity threshold and a second humidity threshold;
acquiring the ambient temperature outside the medicine refrigerating box;
calculating the operating parameters of the actuating mechanism according to the ambient temperature outside the medicine refrigerating box;
detecting whether the internal temperature of the current medicine refrigerating box is greater than or equal to a first temperature threshold value and less than or equal to a second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is smaller than the first temperature threshold value or larger than the second temperature threshold value, adjusting the operation parameters of the executing mechanism, and re-executing the step of detecting whether the internal temperature of the current medicine refrigerating box is larger than or equal to the first temperature threshold value and smaller than or equal to the second temperature threshold value;
if the internal temperature of the current medicine refrigerating box is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, maintaining the operation parameters of the current execution mechanism, and detecting whether the internal humidity of the current medicine refrigerating box is greater than or equal to the first humidity threshold and less than or equal to the second humidity threshold;
if the internal humidity of the current medicine refrigerating box is smaller than a first humidity threshold value or larger than a second humidity threshold value, adjusting the operating parameters of the actuating mechanism, and re-executing the step of detecting whether the internal humidity of the current medicine refrigerating box is larger than or equal to the first humidity threshold value and smaller than or equal to the second humidity threshold value;
if the internal humidity of the current medicine refrigerating box is greater than or equal to a first humidity threshold value and less than or equal to a second humidity threshold value, maintaining the operation parameters of the current execution mechanism;
and returning to the step of acquiring the ambient temperature outside the medicine refrigerating box.
2. The method as claimed in claim 1, wherein the actuator comprises a compressor and a fan, and the operating parameters of the actuator comprise compressor start-up parameters, compressor stop-down parameters, fan delayed start-up parameters, and fan delayed stop-down parameters.
3. The method of claim 2, wherein the operating parameters of said actuator are calculated as:
T on ＝T 0 +a；
T off ＝T 0 -b；
t on ＝c；
T off ＝d；
in the formula: t is on For compressor starting parameters, T off For compressor shutdown parameters, t on For the fan delay opening parameter, t off For fan delayed shutdown parameters, T 0 As initial temperature constants, a, b, c, d are iterative variables;
the value ranges of a, b, c and d are determined by the ambient temperature outside the medicine refrigerating box.
4. The method of claim 3, wherein adjusting the operating parameter of the actuator if the current internal temperature of the drug cooler is less than the first temperature threshold or greater than the second temperature threshold comprises:
presetting initial values of an iteration variable a and an iteration variable b;
if the internal temperature of the current medicine refrigerating box is smaller than a first temperature threshold value, carrying out decreasing iteration on the iteration variable a and the iteration variable b;
and if the internal temperature of the current medicine refrigerating box is larger than the second temperature threshold value, performing incremental iteration on the iteration variable a and the iteration variable b.
5. The method of claim 3, wherein if the humidity of the interior of the current medicine refrigerator is less than the first humidity threshold or greater than the second humidity threshold, the adjusting the operating parameters of the actuator comprises:
presetting initial values of an iteration variable c and an iteration variable d;
if the internal humidity of the current medicine refrigerating box is smaller than the first humidity threshold value, decreasing iteration is carried out on the iteration variable c, and increasing iteration is carried out on the iteration variable d;
and if the internal humidity of the current medicine refrigerating box is greater than the second humidity threshold value, performing incremental iteration on the iteration variable c, and performing decremental iteration on the iteration variable d.
6. The method of claim 3, wherein the iterative variables have a range of values selected from the group consisting of:
when the ambient temperature is more than or equal to 25 ℃, the value range of a is 2-4 ℃, the value range of b is 0-1 ℃, the value range of c is 0-120s, and the value range of d is 0-120s;
when the ambient temperature is less than 25 ℃, the value range of a is 3-6, the value range of b is-1-2 ℃, the value range of c is 0-180s, and the value range of d is 0-60s.
7. A temperature and humidity control device for a medicine refrigerator, which is adapted to the temperature and humidity control method for a medicine refrigerator according to any one of claims 1 to 6, said temperature and humidity control device comprising the following structure:
a controller (1);
a sensor electrically connected to the controller (1); the sensor is configured to acquire environmental temperature information outside the medicine refrigerating box and temperature information and humidity information inside the medicine refrigerating box and send the temperature information and the humidity information to the controller (1);
an actuator electrically connected to the controller (1);
the controller (1) is configured to: and generating a control instruction for controlling the starting or stopping of the executing mechanism according to the temperature information and the humidity information.
8. The temperature and humidity control device for a medicine cooler of claim 7, wherein said sensor comprises: an environment temperature sensor (4), an in-box temperature sensor (5) and an in-box humidity sensor (6); the actuator includes: a fan (2) and a compressor (3); the fan (2) is used for accelerating the evaporation of frost water in the medicine refrigerator so as to improve the humidity in the refrigerator, and the compressor (3) is used for refrigerating so as to reduce the temperature in the refrigerator.
9. The device as claimed in claim 8, wherein the ambient temperature sensor (4) is disposed outside the drug refrigerator, and the inside temperature sensor (5) and the inside humidity sensor (6) are disposed in parallel on the inside wall of the drug refrigerator.
10. The device as claimed in claim 7, further comprising a display panel (7), wherein the display panel (7) is electrically connected to the controller (1) and configured to display the ambient temperature, the internal temperature and the internal humidity.
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