CN112444053B - Air circulation system, control method thereof and refrigeration equipment - Google Patents
Air circulation system, control method thereof and refrigeration equipment Download PDFInfo
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- CN112444053B CN112444053B CN201910833534.5A CN201910833534A CN112444053B CN 112444053 B CN112444053 B CN 112444053B CN 201910833534 A CN201910833534 A CN 201910833534A CN 112444053 B CN112444053 B CN 112444053B
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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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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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
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
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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
Abstract
The invention discloses a wind circulation system, a control method thereof and refrigeration equipment.A partition plate between a first temperature area and a second temperature area is designed into a mountable and dismountable form on the basis of a double-temperature-area wind circulation system, and is controlled according to the double-temperature-area wind circulation system when the partition plate is mounted and is controlled according to a single-temperature-area wind circulation system when the partition plate is dismounted; in the single-temperature-zone air circulation system control, the four air doors are controlled to be opened or closed according to the detection temperatures of the first temperature sensor and the second temperature sensor; when the difference value between the two values is smaller than a preset value, controlling according to the single-temperature-zone wind circulation; when the difference value between the first air door and the second air door is larger than a preset value, one of the first air door and the third air door is controlled to be opened and one of the second air door and the fourth air door is controlled to be closed according to the detection temperatures of the two temperature sensors, so that a single circulation air path is formed; the air circulation system with the single-temperature area and the double-temperature area capable of being freely switched is realized, and the technical effect of improving the temperature uniformity is realized.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to an air circulation system, a control method of the air circulation system and refrigeration equipment.
Background
In refrigeration equipment such as refrigerators, ice bars, wine cabinets and the like, in order to comply with the difference of sizes of Tibetan products, various air circulation refrigeration products such as single-temperature-zone refrigeration, double-temperature-zone refrigeration or multi-temperature-zone refrigeration are designed for users to select.
However, the storage requirement for specific collection is eliminated, and most users do not have fixed requirements for the size of the storage space according to the daily storage condition, and may need a larger space to store larger collection sometimes, but need a common storage space to store more and smaller collections sometimes, which causes a problem that a refrigeration equipment product is difficult to meet the diversified storage requirements of users.
Disclosure of Invention
The invention aims to provide an air circulation system, a control method thereof and refrigeration equipment, and provides the air circulation system with a single-temperature area and a double-temperature area capable of being freely switched, so that the single-temperature area and the double-temperature area can be freely switched, a user can switch the size of the temperature areas according to actual requirements, and the technical effect of improving the temperature uniformity is realized.
The invention is realized by adopting the following technical scheme:
the air circulation system comprises a first temperature zone, a second temperature zone and a third temperature zone, wherein the first temperature zone is provided with a first air door and a second air door and is provided with a first air inlet duct and a first air outlet duct; the first air inlet duct is communicated with a first air door, and the first air outlet duct is communicated with a second air door; the second temperature zone is provided with a third air door and a fourth air door and is provided with a second air inlet duct and a second air outlet duct; the second air inlet duct is communicated with a third air door, and the second air outlet duct is communicated with a fourth air door; the fan is used for supplying air to the first air inlet duct and the second air inlet duct; further comprising: the first temperature sensor is used for detecting the temperature of the first temperature zone; the second temperature sensor is used for detecting the temperature of the second temperature zone; the partition plate is positioned between the first temperature zone and the second temperature zone, and after the partition plate is removed, the first temperature zone is communicated with the second temperature zone to form a single temperature zone; the controller is used for controlling the second air door and the fourth air door to be opened when the partition plate is arranged between the first temperature zone and the second temperature zone, and controlling the first air door and the third air door to be opened or closed based on the detection temperatures of the first temperature sensor and the second temperature sensor; and after the partition is detached, controlling one of the first air door and the third air door to be opened and controlling one of the second air door and the fourth air door to be closed based on the detected temperatures of the first temperature sensor and the second temperature sensor so as to form a single circulation air path.
Further, after the partition is removed, the controller controls the fourth damper to be opened, the second damper and the third damper to be closed when detecting that the absolute value of the difference value between the temperatures detected by the first temperature sensor and the second temperature sensor is less than or equal to a preset value, and controls the first damper to be opened or closed based on the temperature detected by the first temperature sensor or the second temperature sensor; the controller controls the first and second dampers to be opened and the third and fourth dampers to be closed based on the detected temperatures of the first and second temperature sensors when detecting that the absolute value of the difference value of the detected temperatures of the first and second temperature sensors is greater than a preset value; or, controlling the first and second dampers to be closed and the third and fourth dampers to be opened; alternatively, the second and third dampers are controlled to open and the first and fourth dampers are controlled to close.
Further, the controller, when detecting that the absolute value | T1-T2| of the difference between the detected temperature T1 of the first temperature sensor and the detected temperature T2 of the second temperature sensor is greater than a preset value f: if f < | T1-T2| < f1, f1> f, the controller controls the second and third dampers to open and controls the first and fourth dampers to close; if T1-T2 is larger than or equal to f1, the controller controls the first air door and the second air door to be opened and controls the third air door and the fourth air door to be closed; if T2-T1 is larger than or equal to f1, the controller controls the first air door and the second air door to be closed and controls the third air door and the fourth air door to be opened.
Further, the system further comprises: the temperature zone switching trigger switch is connected with the controller and is used for being triggered to generate a dual temperature zone switching signal when the partition plate is installed and generating a single temperature zone switching signal when the partition plate is removed; and the controller identifies the disassembly and assembly state of the partition plate according to the received double-temperature-zone switching signal or single-temperature-zone switching signal.
Furthermore, the first temperature zone and the second temperature zone are formed by installing the partition plate on the inner container, and the temperature zone switching trigger switch is arranged in an area between the first temperature zone and the second temperature zone on the inner container.
A control method of a wind circulation system is provided, which comprises that a detachable clapboard is arranged between a first temperature area and a second temperature area; under the condition that the partition board is installed, opening a second air door arranged in the first temperature zone and a fourth air door arranged in the second temperature zone, and controlling the opening or closing of the first air door arranged in the first temperature zone based on the temperature of the first temperature zone and controlling the opening or closing of a third air door arranged in the second temperature zone based on the temperature of the second temperature zone; the first air door is communicated with a first air inlet duct, the second air door is communicated with a first air outlet duct, the third air door is communicated with a second air inlet duct, and the fourth air door is communicated with a second air outlet duct; and under the condition that the partition plate is detached, the first temperature zone is communicated with the second temperature zone, one of the first air door and the third air door is controlled to be opened according to the temperature of the first temperature zone and the second temperature zone, and one of the second air door and the fourth air door is controlled to be closed so as to form a single circulation air path.
Further, in case of removal of said partition: when the absolute value of the temperature difference value between the first temperature zone and the second temperature zone is smaller than or equal to a preset value, the fourth air door is opened, the second air door and the third air door are closed, the first air door is controlled to be opened or closed according to the temperature of the first temperature zone or the temperature of the second temperature zone, and a single-circulation air path for entering air from the first air door and exiting air from the fourth air door is realized; when the absolute value of the temperature difference value between the first temperature zone and the second temperature zone is larger than a preset value, controlling the opening and closing states of the four air doors according to the temperature of the first temperature zone or the temperature of the second temperature zone to form a single-circulation air path for air to enter from the first air door and air to exit from the second air door; alternatively, a single circulation air passage is formed in which air enters from the third damper and air exits from the second damper or air exits from the fourth damper.
Further, when the partition plate is removed and the absolute value of the difference between the temperature T1 of the first temperature zone and the temperature T2 of the second temperature zone is greater than the preset value f: if f < | T1-T2| < f1, f1> f, controlling the second air door and the third air door to be opened, and controlling the first air door and the fourth air door to be closed, so as to form a single-circulation air path for air inlet from the third air door and air outlet from the second air door; if T1-T2 is larger than or equal to f1, the first air door and the second air door are controlled to be opened, and the third air door and the fourth air door are controlled to be closed, so that a single circulation air path for air inlet from the first air door and air outlet from the second air door is formed; and if the T2-T1 is more than or equal to the f1, controlling the first air door and the second air door to be closed, and controlling the third air door and the fourth air door to be opened to form a single circulation air path for air inlet from the third air door and air outlet from the fourth air door.
A refrigeration device is provided, which comprises the air circulation system.
Further, still include compressor and evaporimeter, the compressor intercommunication evaporimeter controls the evaporimeter refrigeration operation, the fan blows the air current and passes through the evaporimeter is to first air inlet channel with the air supply of second air inlet channel.
Compared with the prior art, the invention has the advantages and positive effects that: in the air circulation system, the control method thereof and the refrigeration equipment, on the basis of the dual-temperature-zone air circulation system, a partition plate between a first temperature zone and a second temperature zone is designed into a mountable and dismountable form, after the partition plate is mounted, the control is carried out according to the dual-temperature-zone air circulation system, and after the partition plate is dismounted, the control is carried out according to the single-temperature-zone air circulation system; in the single-temperature-zone air circulation system control, the opening or closing of the four air doors is controlled according to the detection temperatures of the first temperature sensor and the second temperature sensor, when the absolute value of the difference value between the four air doors is smaller than a preset value, the fourth air door is opened, the second air door and the third air door are closed, and the opening or closing of the first air door is controlled according to the detection temperature of the first temperature sensor or the second temperature sensor, so that a single circulation air path for air inlet from the first air door and air outlet from the fourth air door is realized; when the absolute value of the difference value between the first air door and the second air door is larger than a preset value, one of the first air door and the third air door is controlled to be opened according to the detection temperature of the first temperature sensor and the second temperature sensor, and one of the second air door and the fourth air door is controlled to be closed, so that a single circulation air path which is used for introducing air from the first air door and discharging air from the second air door or a single circulation air path which is used for introducing air from the third air door and discharging air from the second air door or the fourth air door is realized; the wind circulation system with the single and double temperature areas freely switched is realized. Based on the expansion of the wind circulation system, the free switching of the single-temperature area and the multi-temperature area can be realized, so that a user can switch the size of the temperature area according to actual requirements, and meanwhile, the technical effect of improving the temperature uniformity is realized.
Other features and advantages of the present invention will become more apparent from the detailed description of the embodiments of the present invention when taken in conjunction with the accompanying drawings.
Drawings
FIG. 1 is an architectural diagram of one embodiment of a wind circulation system in accordance with the present invention;
fig. 2 is a schematic view of a single-temperature-zone wind circulation wind path of the wind circulation system according to the present invention;
fig. 3 is a flowchart of an embodiment of a wind circulation system control method according to the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention provides an air circulation system, which comprises a first temperature area A, a second temperature area B, a fan C, a first temperature sensor D, a second temperature sensor E and a partition plate F, wherein the first temperature area A is provided with a first air door 11 and a second air door 12, and is provided with a first air inlet duct 21 and a first air outlet duct 22, the first air inlet duct 21 is connected with the first air door 11, and the first air outlet duct 22 is connected with the second air door 12; the second temperature zone B is provided with a third air door 13 and a fourth air door 14, and is configured with a second air inlet duct 23 and a second air outlet duct 24, the second air inlet duct 23 is connected with the third air door 13, and the second air outlet duct 24 is connected with the fourth air door 14; the fan C is used for supplying air to the first air inlet duct 21 and the second air inlet duct 23; the first temperature sensor D is arranged in the first temperature zone A; the second temperature sensor E is disposed in the second temperature zone B.
In the embodiment of the invention, the clapboard F is a movable clapboard and can be arranged between the first temperature area A and the second temperature area B, so that the first temperature area A and the second temperature area B work according to a dual-temperature-area wind circulation system; or the first temperature zone A and the second temperature zone B are removed from the space between the first temperature zone A and the second temperature zone B, so that the first temperature zone A and the second temperature zone B are combined into one temperature zone and then work according to a single-temperature-zone wind circulating system.
As shown in fig. 1, a temperature zone switching trigger switch G is disposed on the partition plate F or in a set region between the first temperature zone a and the second temperature zone B, and is configured to trigger the partition plate F to generate a dual temperature zone switching signal when the partition plate F is mounted, and to be triggered to generate a single temperature zone switching signal when the partition plate F is removed; for example, a temperature zone switching trigger switch G is installed in the inner container in the area between the first temperature zone a and the second temperature zone B, and when the partition plate F is installed between the first temperature zone a and the second temperature zone B, the partition plate F presses the inner container wall of the refrigeration equipment, and the temperature zone switching trigger switch G is triggered to generate a high-level signal as a dual temperature zone switching signal; when the partition plate F is removed, the temperature zone switching trigger switch G releases the extrusion, the high level signal is switched into the low level signal, and the low level signal is used as the single temperature zone switching signal.
Specifically, the air circulation system provided by the invention comprises a controller, such as a main control chip and the like, which is used for identifying the disassembly and assembly state of the partition plate F according to different setting or disassembly states of the partition plate, namely, according to the received double-temperature-zone switching signal or single-temperature-zone switching signal, and further controlling the opening or closing of the four air doors according to the disassembly and assembly state to realize air circulation refrigeration.
Specifically, as shown in fig. 1, when the partition plate F is disposed between the first temperature zone a and the second temperature zone B, the temperature zone switching trigger switch G is triggered to generate a dual-temperature-zone switching signal, the controller controls the second air door 12 and the fourth air door 14 to be opened, and controls the first air door 11 and the third air door 13 to be opened or closed based on the temperatures detected by the first temperature sensor D and the second temperature sensor E; for example, when the first temperature zone a does not reach the preset refrigeration temperature, the first air door 11 is controlled to be opened, the first air door 11 is closed until the preset refrigeration temperature is reached in the first temperature zone a, and when the second temperature zone B does not reach the preset refrigeration temperature, the third air door 13 is controlled to be opened until the preset refrigeration temperature is reached in the second temperature zone B, and the third air door 13 is closed.
As shown in fig. 2, when the partition plate F is removed from between the first temperature zone a and the second temperature zone B, the temperature zone switch trigger switch G generates a single temperature zone switch signal, and the controller controls one of the first damper 11 and the third damper 13 to be opened and one of the second damper 12 and the fourth damper 14 to be closed based on the difference between the temperatures detected by the first temperature sensor D and the second temperature sensor E, so as to form a single-circulation air path to realize single-temperature-zone air circulation refrigeration.
Specifically, when the absolute value | T1-T2| of the difference between the detected temperature T1 of the first temperature sensor D and the detected temperature T2 of the second temperature sensor E is less than or equal to the preset value f, the fourth damper 14 is controlled to be opened, the second damper 12 and the third damper 13 are controlled to be closed, and then the first damper 11 is controlled to be opened or closed based on the detected temperature T1 or T2 of the first temperature sensor D or the second temperature sensor E. That is, the second damper 12 and the third damper 13 are closed to form the air path 1 for supplying air from the first damper 11 and discharging air from the fourth damper in the direction indicated by the arrow curve 1 in the drawing, the opening and closing of the first damper 11 is determined by the detected temperature of the first temperature sensor D or the second temperature sensor E, the first damper 11 is closed when the detected temperature reaches the preset cooling temperature, and the first damper 11 is opened when the preset cooling temperature is not satisfied.
When the absolute value | T1-T2| of the difference in the detected temperatures of the first and second temperature sensors D and E is greater than the preset value f, one of the first and third dampers 11 and 13 is controlled to be opened and one of the second and fourth dampers 12 and 14 is controlled to be closed based on the detected temperatures of the first and second temperature sensors D and E. That is, three air paths are formed in the direction of the arrow curves 2, 3 or 4 in the figure according to the detected temperatures of the two temperature sensors, wherein the air path 2 is suitable for the case of f < | T1-T2| < f1, f1> f, namely, the first damper 11 is opened, the second damper 12 is opened, the third damper 13 is closed and the fourth damper 14 is closed; the air path 3 is used for closing the first air door 11, closing the second air door 12, opening the third air door 13 and opening the fourth air door 14, and is suitable for the condition that T1-T2 is more than or equal to f 1; the air path 4 is used for closing the first air door 11, opening the second air door 12, opening the third air door 13 and closing the fourth air door 14, and is suitable for the condition that T2-T1 is more than or equal to f 1; f1 is a defined value larger than a preset value, and when the defined value is higher than F1, the temperature difference between the upper temperature area and the lower temperature area is obvious in the single temperature area formed by removing the partition plate F.
Based on the air circulation system shown in fig. 1 and 2, the present invention further provides a control method for controlling the cooling air path, specifically, as shown in fig. 3:
step S21: and a detachable partition plate is arranged between the first temperature zone and the second temperature zone.
When the partition plate F is disposed between the first temperature zone a and the second temperature zone B, a dual temperature switching signal is generated, and when the partition plate F is not disposed between the first temperature zone a and the second temperature zone B, or removed from between the first temperature zone a and the second temperature zone B, a single temperature zone switching signal is generated.
Step S22: in the case of the partition plate being installed, a second air door provided in the first temperature zone and a fourth air door provided in the second temperature zone are opened, and the opening or closing of the first air door provided in the first temperature zone is controlled based on the temperature of the first temperature zone, and the opening or closing of the third air door provided in the second temperature zone is controlled based on the temperature of the second temperature zone.
The controller judges whether a dual-temperature-zone switching signal or a single-temperature-zone switching signal is received, controls the second air door 12 and the fourth air door 14 to be opened when the dual-temperature-zone switching signal with the partition plate F arranged between the first temperature zone A and the second temperature zone B is received, and controls the first air door 11 and the third air door 13 to be opened or closed based on the detection temperatures of the first temperature sensor D and the second temperature sensor E.
Step S23: and under the condition that the partition board is detached, the first temperature zone is communicated with the second temperature zone, one of the first air door and the third air door is controlled to be opened according to the temperature of the first temperature zone and the second temperature zone, and one of the second air door and the fourth air door is controlled to be closed, so that a single circulation air path is formed.
When a single-temperature-zone switching signal that the partition plate F is not arranged between the first temperature zone A and the second temperature zone B is received, one of the first air door 11 and the third air door 13 is controlled to be opened based on the detection temperature T1 of the first temperature sensor D and the detection temperature T2 of the second temperature sensor D, and one of the second air door 12 and the fourth air door 14 is controlled to be closed, so that a single-circulation air path is formed.
Specifically, the method comprises the following steps: when the absolute value | T1-T2| of the difference value of the detection temperatures of the first temperature sensor D and the second temperature sensor E is less than or equal to a preset value f, controlling the fourth air door 14 to be opened, and controlling the second air door 12 and the third air door 13 to be closed; the opening or closing of the first damper 11 is controlled based on the detected temperature of the first temperature sensor D or the second temperature sensor E, and an air circulation passage of the air duct 1 is formed as shown in fig. 2.
When the absolute value | T1-T2| of the difference value of the temperatures detected by the first temperature sensor D and the second temperature sensor E is larger than the preset value f, the opening and closing states of the four air doors are controlled based on the temperatures detected by the first temperature sensor D and the second temperature sensor E, and a single-circulation air path 2 for allowing air to enter from the first air door 11 and allowing air to exit from the second air door 12 is formed; or, a single circulation air path 4 is formed, which enters from the third air door 13 and exits from the second air door 12; alternatively, a single circulation duct 3 is formed in which air is taken in from the third damper 13 and air is taken out from the fourth damper 14.
Specifically, in the embodiment of the present invention, the absolute value | T1-T2| of the difference between the detected temperatures of the first temperature sensor D and the second temperature sensor E is greater than the preset value f, and the two situations are divided into two types: setting a defined value F1 higher than the preset value F, namely F1> F, when the absolute value | T1-T2| of the difference value of the detected temperatures of the two sensors is larger than or equal to the defined value F1, the temperature difference in the single temperature zone formed after the partition plate F is removed is too large, and the single temperature zone needs to be independently refrigerated and adjusted aiming at the area with the too large difference.
In the first case: when the absolute value of T1-T2 is greater than or equal to the first preset value f1, the difference of the temperatures of the two temperature areas is obvious, then,
when the detection temperature T1 of the first temperature sensor D is obviously higher than the detection temperature T2 of the second temperature sensor E, namely T1-T2 is more than or equal to f1, the temperature of the first temperature zone A is higher, the first air door 11 is controlled to be opened, the second air door 12 is controlled to be opened, the third air door 13 is controlled to be closed and the fourth air door 14 is controlled to be closed, so that an air path 2 is formed, and the refrigeration of the first temperature zone A is enhanced;
when the detection temperature T1 of the first temperature sensor D is significantly lower than the detection temperature T2 of the second temperature sensor E, that is, T2-T1 is greater than or equal to f1, and the temperature of the second temperature zone B is relatively high, the first damper 11 is controlled to be closed, the second damper 12 is controlled to be closed, the third damper 13 is controlled to be opened, and the fourth damper 14 is controlled to be opened, so that the air path 3 is formed, and the refrigeration of the second temperature zone B is enhanced.
In the second case: when f < | T1-T2| < f1, the difference of the temperatures of the two temperature zones is relatively weak, the first air door 11 is controlled to be closed, the second air door 12 is controlled to be opened, the third air door 13 is controlled to be opened, and the fourth air door 14 is controlled to be closed, so that the air path 4 is formed, and balanced refrigeration is carried out in the middle area of the two temperature zones.
In the method for controlling an air circulation system according to the present invention, a refrigeration control strategy designed based on a comparison relationship between the absolute value | T1-T2| of the difference between the temperatures detected by the two temperature sensors and the preset value F under the single temperature zone control is described in detail below with two specific embodiments, that is, a control in which the partition plate F is not disposed between the first temperature zone a and the second temperature zone B or removed from between the first temperature zone a and the second temperature zone B.
Example one
The preset value f of the difference value of the two temperature zones is set to be 2 ℃; when the system starts to operate, the system can refrigerate according to a temperature control mode under normal conditions: opening a first damper 11, closing a second damper 12 and a third damper 13, and opening a fourth damper 14 to form an air path 1 for cooling; until the detection temperature of one of the first temperature sensor D and the second temperature sensor E reaches the preset refrigeration temperature T.
(1) If the detection temperature T1 of the first temperature sensor D reaches the preset refrigeration temperature T first, then:
when T2-T1 is less than or equal to 2 ℃, the system can refrigerate according to a temperature control mode under normal conditions.
When T2-T1 is more than 2 ℃, the first air door 11 and the second air door 12 are closed, the third air door 13 and the fourth air door 14 are opened, the air circulation is only in the area B of the second temperature zone, the air circulation is the air path 3 shown in the figure, the bottom part of the whole temperature zone can be rapidly refrigerated until T2-T1 is less than or equal to 2 ℃, and the system is refrigerated according to the temperature control mode under the normal condition.
(2) If the detection temperature T2 of the second temperature sensor E reaches the preset refrigeration temperature T first, then:
when T1-T2 is less than or equal to 2 ℃, the system can refrigerate according to the temperature control mode under the normal condition.
When T1-T2 is more than 2 ℃, the third air door 13 and the fourth air door 14 are closed, the first air door 11 and the second air door 12 are opened, the air circulation is only in the area of the first temperature area A, the air circulation is the air path 2 shown in the figure, the upper part of the whole temperature area can be rapidly refrigerated until T1-T2 is less than or equal to 2 ℃, and the system is refrigerated according to the temperature control mode under the normal condition.
Example two
Subdividing the difference value of the two temperature areas, and setting a defined value f1 which is larger than a preset value f1, namely f1> f, wherein f1=3 ℃ in the embodiment; when the system is set to start to operate, the system can refrigerate in a temperature control mode under the normal condition as shown in one embodiment until the arithmetic mean value of the detection temperature T1 of the first temperature sensor D and the detection temperature T2 of the second temperature sensor E reaches the preset refrigerating temperature T.
(1) When the temperature of | T1-T2| is less than or equal to 2 ℃, the system can refrigerate according to the temperature control mode under the normal condition.
(2) When the temperature of T2-T1 is more than or equal to 3 ℃: the first air door 11 and the second air door 12 are closed, the third air door 13 and the fourth air door 14 are opened, the air circulation is only in the part B of the second temperature zone at the moment, the air circulation is the air path 3 shown in the figure, the bottom part of the whole temperature zone can be rapidly refrigerated at the moment until the absolute value of T1-T2 is less than or equal to 2 ℃, and the system is refrigerated according to a temperature control mode under the normal condition.
(3) When the temperature of T1-T2 is more than or equal to 3 ℃: the third air door 13 and the fourth air door 14 are closed, the first air door 11 and the second air door 12 are opened, the air circulation is only in the part A of the first temperature zone at the moment, the air circulation is the air path 2 shown in the figure, the upper part of the whole temperature zone can be rapidly refrigerated at the moment until the absolute value of T1-T2 is less than or equal to 2 ℃, and the system is refrigerated according to a temperature control mode under normal conditions.
(4) When the temperature is 2 ℃ < T1-T2| <3 ℃, the first air door 11 is closed, the second air door 12 is opened, the third air door 13 is opened and the fourth air door 14 is closed, at the moment, the air circulation is only in the area where the first temperature area A and the second temperature area B are connected, the air circulation is the air path 4 shown in the figure, at the moment, the middle part of the whole temperature area can be sequentially refrigerated and diffused to two sides until | T1-T2| < 2 ℃, and the system is refrigerated according to a temperature control mode under the normal condition.
Based on the air circulation system and the control method thereof, the invention also provides a refrigeration device which is provided with a compressor, an evaporator and the air circulation system, wherein the compressor controls the evaporator to perform refrigeration operation, the temperature of the air flow generated by the fan C is reduced after the air flow passes through the evaporator to form cold air flow, and the cold air flow flows into the first temperature area A and/or the second temperature area B through the opened first air door 11 and/or the opened third air door 13 so as to realize refrigeration of the first temperature area A and/or the second temperature area B.
On the basis of the dual-temperature-zone wind circulation system, a partition plate F between the first temperature zone A and the second temperature zone B is designed to be in a detachable installation mode, after the partition plate F is installed, the control is carried out according to the dual-temperature-zone wind circulation system, and when the partition plate F is detached, the control is carried out according to the single-temperature-zone wind circulation system. In the single-temperature-zone air circulation system control, the opening or closing of the four air doors is controlled according to the detection temperatures of the first temperature sensor D and the second temperature sensor E, when the absolute value of the difference value between the four air doors is smaller than or equal to a preset value, the fourth air door 14 is opened, the second air door 12 and the third air door 13 are closed, the opening or closing of the first air door 11 is controlled according to the detection temperature of the first temperature sensor D or the second temperature sensor E, and a single circulation air path for air inlet from the first air door 11 and air outlet from the fourth air door 14 is realized; when the absolute value of the difference value between the first air door and the second air door is greater than a preset value, one of the first air door 11 and the third air door 13 is controlled to be opened and one of the second air door 12 and the fourth air door 14 is controlled to be closed according to the detection temperature of the first temperature sensor D and the second temperature sensor E, so that a single-circulation air path which enters air from the first air door 11 and exits air from the second air door 12 or a single-circulation air path which enters air from the third air door 13 and exits air from the second air door 12 or the fourth air door 14 is realized; the wind circulation system with the single and double temperature areas freely switched is realized. Based on the expansion of the wind circulation system, the free switching of the single-temperature area and the multi-temperature area can be realized, so that a user can switch the size of the temperature area according to actual requirements, and meanwhile, the technical effect of improving the temperature uniformity is realized.
It should be noted that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also make changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (10)
1. A wind circulation system comprising:
the first temperature zone is provided with a first air door, a second air door, a first air inlet channel and a first air outlet channel; the first air inlet duct is communicated with a first air door, and the first air outlet duct is communicated with a second air door;
the second temperature zone is provided with a third air door and a fourth air door and is provided with a second air inlet duct and a second air outlet duct; the second air inlet duct is communicated with a third air door, and the second air outlet duct is communicated with a fourth air door;
the fan is used for supplying air to the first air inlet duct and the second air inlet duct;
it is characterized by also comprising:
the first temperature sensor is used for detecting the temperature of the first temperature zone;
the second temperature sensor is used for detecting the temperature of the second temperature zone;
the partition plate is positioned between the first temperature zone and the second temperature zone, and after the partition plate is removed, the first temperature zone is communicated with the second temperature zone to form a single temperature zone;
the controller is used for controlling the second air door and the fourth air door to be opened when the partition plate is arranged between the first temperature zone and the second temperature zone, and controlling the first air door and the third air door to be opened or closed based on the detection temperatures of the first temperature sensor and the second temperature sensor; and after the partition is detached, controlling one of the first air door and the third air door to be opened and controlling one of the second air door and the fourth air door to be closed based on the detected temperatures of the first temperature sensor and the second temperature sensor so as to form a single circulation air path.
2. The wind circulation system of claim 1, wherein, after the partition is removed,
the controller controls the fourth air door to be opened, the second air door and the third air door to be closed under the condition that the absolute value of the difference value of the detection temperatures of the first temperature sensor and the second temperature sensor is smaller than or equal to a preset value, and controls the first air door to be opened or closed based on the detection temperature of the first temperature sensor or the second temperature sensor;
the controller controls the first and second dampers to be opened and the third and fourth dampers to be closed based on the detected temperatures of the first and second temperature sensors when detecting that the absolute value of the difference value of the detected temperatures of the first and second temperature sensors is greater than a preset value; or, controlling the first and second dampers to be closed and the third and fourth dampers to be opened; alternatively, the second and third dampers are controlled to open and the first and fourth dampers are controlled to close.
3. The wind circulation system according to claim 2, wherein the controller, in the case where it is detected that the absolute value | T1-T2| of the difference between the detected temperature T1 of the first temperature sensor and the detected temperature T2 of the second temperature sensor is greater than a preset value f:
if f < | T1-T2| < f1, f1> f, the controller controls the second and third dampers to open and controls the first and fourth dampers to close;
if T1-T2 is larger than or equal to f1, the controller controls the first air door and the second air door to be opened and controls the third air door and the fourth air door to be closed;
if T2-T1 is larger than or equal to f1, the controller controls the first air door and the second air door to be closed and controls the third air door and the fourth air door to be opened.
4. A wind circulating system according to any one of claims 1 to 3 further comprising:
the temperature zone switching trigger switch is connected with the controller and is used for being triggered to generate a dual-temperature zone switching signal when the partition plate is installed and generating a single-temperature zone switching signal when the partition plate is removed; and the controller identifies the disassembly and assembly state of the partition plate according to the received double-temperature-zone switching signal or single-temperature-zone switching signal.
5. The wind circulation system according to claim 4, wherein the first temperature zone and the second temperature zone are formed by installing the partition plate on an inner container, and the temperature zone switching trigger switch is disposed in an area between the first temperature zone and the second temperature zone on the inner container.
6. A method of controlling a wind circulation system, comprising:
a detachable partition plate is arranged between the first temperature zone and the second temperature zone;
under the condition that the partition board is installed, opening a second air door arranged in the first temperature zone and a fourth air door arranged in the second temperature zone, and controlling the opening or closing of the first air door arranged in the first temperature zone based on the temperature of the first temperature zone and controlling the opening or closing of a third air door arranged in the second temperature zone based on the temperature of the second temperature zone; the first air door is communicated with a first air inlet channel, the second air door is communicated with a first air outlet channel, the third air door is communicated with a second air inlet channel, and the fourth air door is communicated with a second air outlet channel;
and under the condition that the partition board is removed, the first temperature zone is communicated with the second temperature zone, one of the first air door and the third air door is controlled to be opened according to the temperature of the first temperature zone and the temperature of the second temperature zone, and one of the second air door and the fourth air door is controlled to be closed so as to form a single circulation air path.
7. A wind circulation system control method according to claim 6, wherein with the partition removed:
when the absolute value of the temperature difference value between the first temperature zone and the second temperature zone is smaller than or equal to a preset value, opening a fourth air door, closing a second air door and a third air door, and controlling the first air door to be opened or closed according to the temperature of the first temperature zone or the temperature of the second temperature zone, so that a single-circulation air path for introducing air from the first air door and discharging air from the fourth air door is realized;
when the absolute value of the temperature difference value between the first temperature zone and the second temperature zone is larger than a preset value, controlling the opening and closing states of the four air doors according to the temperature of the first temperature zone or the temperature of the second temperature zone to form a single-circulation air path for air to enter from the first air door and air to exit from the second air door; alternatively, a single circulation air path is formed in which air enters from the third damper and air exits from the second damper or the fourth damper.
8. The wind circulation system control method according to claim 7, wherein, in the case where the partition plate is removed and the absolute value of the difference between the temperature T1 of the first temperature zone and the temperature T2 of the second temperature zone is greater than a preset value f:
if f < | T1-T2| < f1, f1> f, controlling the second air door and the third air door to be opened, and controlling the first air door and the fourth air door to be closed, so as to form a single-circulation air path for air inlet from the third air door and air outlet from the second air door;
if T1-T2 is larger than or equal to f1, the first air door and the second air door are controlled to be opened, and the third air door and the fourth air door are controlled to be closed, so that a single circulation air path for air inlet from the first air door and air outlet from the second air door is formed;
and if the T2-T1 is more than or equal to the f1, controlling the first air door and the second air door to be closed, and controlling the third air door and the fourth air door to be opened to form a single circulation air path for air inlet from the third air door and air outlet from the fourth air door.
9. Refrigeration apparatus, comprising a wind circulation system according to any of claims 1-5.
10. The refrigeration apparatus as claimed in claim 9, further comprising a compressor and an evaporator, wherein the compressor is connected to the evaporator to control the evaporator to perform a cooling operation, and the fan blows an air flow through the evaporator to the first and second intake ducts.
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| CN115479446B (en) * | 2021-06-16 | 2024-02-20 | 青岛海尔特种电冰柜有限公司 | Temperature control method, electronic equipment and direct-cooling type refrigerating device |
| CN115479445B (en) * | 2021-06-16 | 2024-03-19 | 青岛海尔特种电冰柜有限公司 | Temperature control method, electronic equipment and direct-cooling type refrigerating device |
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