CN115682504A - Air-cooled refrigeration equipment and control method thereof - Google Patents
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Abstract
The invention provides an air-cooled refrigeration device and a control method thereof. The control method comprises the following steps: in response to the end of defrosting of the evaporator, pre-cooling the evaporator and stopping the fan from rotating; reversing the fan in response to the evaporator reaching a first pre-chill condition; responsive to the evaporator reaching a second pre-chill condition, the fan is rotated forward. The invention solves the problem that the temperature of the storage room is increased and the food fresh-keeping is influenced because the temperature of the air entering the storage room is too high.
Description
Technical Field
The invention belongs to the technical field of refrigeration, and particularly provides air-cooled refrigeration equipment and a control method thereof.
Background
Existing air-cooled refrigeration equipment mainly includes refrigerators, freezers, and freezers in variety. The air-cooled refrigerating equipment mainly comprises a storage chamber, an evaporator, an air duct and a fan, wherein the storage chamber is used for storing stored objects (comprising food materials, medicines, wine, biological reagents, bacterial colonies, chemical reagents and the like), the evaporator is used for cooling air, the air duct is used for introducing the air cooled by the evaporator into the storage chamber, and the fan is used for driving the air cooled by the evaporator into the storage chamber.
The evaporator can condense water vapor in the air into frost in the using process of the air-cooled refrigeration equipment and is attached to the surface of the evaporator, so that the heat exchange between the evaporator and the air in the surrounding environment is influenced, and the refrigeration and cold storage effects of the air-cooled refrigeration equipment are further reduced. Therefore, after the frost on the evaporator reaches a certain degree, it needs to be defrosted.
After defrosting the evaporimeter, can lead to the air temperature in the wind channel to rise, if directly open the fan and will discharge the hot-air in the wind channel to the storeroom, lead to the storeroom temperature to excessively rise, especially low temperature storeroom, it is great to the fresh-keeping influence of edible material.
In order to solve the technical problem, the evaporator is generally pre-cooled in the prior art, and the fan is started after the evaporator is cooled to a certain temperature. However, this method still cannot cool all the air in the air duct, so that a large amount of high-temperature air still exists in the air duct, and the temperature in the storage room is still excessively increased.
Disclosure of Invention
The invention aims to solve the problem that the temperature of a storage chamber is increased and the food fresh-keeping effect is influenced when the conventional air-cooled refrigeration equipment is used for normally refrigerating after defrosting an evaporator.
In order to solve the above problems in the prior art, it is an object of the present invention to provide a control method of an air-cooling type refrigeration apparatus including a storage compartment, an air duct, an evaporator, and a fan for sending air cooled by the evaporator into the storage compartment;
the control method comprises the following steps:
in response to the end of defrosting of the evaporator, pre-refrigerating the evaporator and stopping the fan;
reversing the fan in response to the evaporator reaching a first pre-chill condition;
responsive to the evaporator reaching a second pre-chill condition, the fan is rotated forward.
Optionally, said reversing said blower comprises:
reversing the fan at a first rotational speed;
reversing the fan at a second rotational speed in response to the air temperature within the duct being equal to the air temperature within the storage compartment;
wherein the first rotational speed is greater than the second rotational speed.
Optionally, the second pre-cooling condition comprises operating the fan at the second speed for a first preset time;
said responsive to said evaporator reaching a second pre-chill condition, positively rotating said fan, comprising:
and responding to the fan running at the second rotating speed for the first preset time, enabling the fan to rotate forwards, and enabling the evaporator to refrigerate normally.
Optionally, the air-cooled refrigeration equipment comprises a temperature sensor, and the temperature sensor is positioned at the upstream of the air path when the evaporator performs normal refrigeration;
the making the fan reverse, including:
and controlling the rotating speed of the fan during the reverse rotation according to the detection result of the temperature sensor.
Optionally, the controlling the rotation speed of the fan during reverse rotation according to the detection result of the temperature sensor includes:
comparing the temperature value detected by the temperature sensor with a preset temperature range;
when the temperature value is smaller than the minimum value in the preset temperature range, the rotating speed of the fan is increased;
and when the temperature value is larger than the minimum value in the preset temperature range, reducing the rotating speed of the fan.
Optionally, the second pre-cooling condition comprises the temperature of air within the duct being reduced to equal the temperature of air within the storage compartment.
Optionally, the second pre-cooling condition further comprises a duration of time for which the temperature of air within the duct is no greater than the temperature of air within the storage compartment reaching a second preset time.
Optionally, said reversing said blower comprises:
and gradually increasing the rotating speed of the fan according to a set frequency.
Optionally, the first pre-cooling condition includes that the temperature of the evaporator is less than or equal to a preset temperature value; and/or the distance between the evaporator and the air inlet of the air duct is smaller than the distance between the evaporator and the air outlet of the air duct.
In addition, the invention also provides air-cooled refrigeration equipment, which comprises a processor, a memory and an execution instruction stored on the memory, wherein the execution instruction is set to enable the air-cooled refrigeration equipment to execute the control method in any technical scheme when being executed by the processor.
Based on the foregoing description, it can be understood by those skilled in the art that, in the foregoing technical solution of the present invention, the fan is reversed when the evaporator reaches the first pre-cooling condition, so that the hot air in the fan-driven air duct flows in the opposite direction, and then flows through the evaporator completely or almost completely, and is cooled by the low-temperature evaporator, thereby overcoming the problem that the temperature of the storage compartment is increased due to the over-high temperature of the air entering the storage compartment, which affects the freshness of the food material.
Furthermore, the distance between the evaporator and the air inlet of the air duct is smaller than the distance between the evaporator and the air outlet of the air duct, so that the hot air in the air duct can be positioned at the downstream of the evaporator (when the fan rotates forwards) after the pre-refrigeration of the evaporator is finished, and the hot air can flow through the evaporator when the fan rotates backwards.
And furthermore, the rotating speed of the fan during reverse rotation is controlled according to the detection result of the temperature sensor, so that air entering the storage chamber in the reverse rotation process of the fan can enter the storage chamber at a lower and constant temperature, and the refrigeration and cold storage effects of the storage chamber are ensured.
As will be understood by those skilled in the art, during the reverse rotation of the fan, the temperature of the air in the air duct gradually decreases as the air with lower temperature in the storage chamber enters the air duct, so that the contact time between the air and the evaporator when the air passes through the evaporator can be appropriately shortened. Therefore, in the process of reversing the fan, the rotating speed of the fan is gradually increased according to the preset frequency, so that the air in the air duct can enter the storage chamber at a lower and constant temperature.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly explain the technical solution of the present invention, some embodiments of the present invention will be described hereinafter with reference to the accompanying drawings. Those skilled in the art will appreciate that elements or portions of the same reference number identified in different figures are the same or similar; the drawings of the invention are not necessarily to scale relative to each other.
In the drawings:
FIG. 1 is a schematic illustration of the compartment distribution effect of an air-cooled refrigeration unit in accordance with some embodiments of the present invention;
FIG. 2 is a schematic illustration of the distribution effect of the compartments of an air-cooled chiller plant in accordance with further embodiments of the present invention;
FIG. 3 is a flow chart of the main steps of a method of controlling an air-cooled chiller plant according to some embodiments of the present invention;
FIG. 4 is a graph of air temperature in a duct as a function of time in some embodiments of the invention.
Detailed Description
It should be understood by those skilled in the art that the embodiments described below are only a part of the embodiments of the present invention, not all of the embodiments of the present invention, and the part of the embodiments are intended to explain the technical principles of the present invention and not to limit the scope of the present invention. All other embodiments, which can be obtained by a person skilled in the art based on the embodiments provided by the present invention without inventive effort, shall still fall within the scope of protection of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either directly or indirectly through intervening media, or through the communication between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
FIG. 1 is a schematic illustration of the compartment distribution effect of an air-cooled chiller plant according to some embodiments of the present invention.
As shown in fig. 1, in some embodiments of the invention, an air-cooled refrigeration appliance includes a storage compartment 1, an air duct 2, an evaporator 3, and a fan 4. Wherein, the air duct 2 is communicated with the storage chamber 1, so that the air in the storage chamber 1 can realize the circulation flow by the air duct 2. The evaporator 3 is provided in the air duct 2 for cooling air in the air duct 2. Preferably, the distance between the evaporator 3 and the air inlet of the air duct 2 is smaller than the distance between the evaporator 3 and the air outlet of the air duct 2. Further preferably, the evaporator 3 is arranged close to the air inlet of the air duct 2; so that the hot air in the duct 2 is confined to the top of the evaporator 3 during the pre-cooling stage when the evaporator 3 is defrosted, thereby allowing the hot air to pass through the evaporator 3 in a reverse flow. The fan 4 is used for driving air to circulate between the storage chamber 1 and the air duct 2.
With continued reference to fig. 1, the air-cooled refrigeration apparatus comprises two storage compartments 1, and a damper 5 is provided in the air duct 2. The damper 5 is used to control whether the air cooled by the evaporator 4 flows to the upper storage chamber 1.
In some embodiments of the present invention, when the evaporator 3 performs defrosting and pre-cooling, the damper 5 is closed, and the air heated or cooled by the evaporator 4 is prohibited from flowing upward to the storage chamber 1.
When the fan 4 is rotated forward in the state where the damper 5 is closed, the driving air flows in the direction shown by the solid arrow in fig. 1.
When the fan 4 is reversed in a state where the damper 5 is closed, the driving airflow flows in a direction as indicated by a broken-line arrow in fig. 1.
It should be noted that although two storage chambers 1 are shown in the drawings, one skilled in the art can arrange the storage chambers 1 in any other number, such as one, three, five, etc., as needed.
Further, it should be noted that, although in some embodiments of the present invention, the fan 4 is only configured for the storage room 1 below, in other embodiments of the present invention, one fan 4 may be configured for each storage room 1 according to needs by those skilled in the art. When one of the fans 4 rotates reversely, the other fans 4 stop rotating or rotate reversely at the same time, so that the air in the air duct 2 can flow reversely.
Fig. 2 is a schematic illustration of the compartment distribution effect of an air-cooled refrigeration unit in accordance with further embodiments of the invention.
As shown in fig. 2, in the further embodiments of the present invention, the cold type refrigerating apparatus includes a storage chamber 1, an air duct 2, an evaporator 3, a fan 4, a damper 5, and a refrigerating chamber 6. Wherein, the storeroom 1, the refrigeration room 6 and the air duct 2 are communicated in sequence, so that air flows circularly in sequence according to the storeroom 1, the refrigeration room 6 and the air duct 2. The refrigeration chamber 6 is located below the storage chamber 1, the evaporator 3 is arranged in the refrigeration chamber 6, and the fan 4 is arranged at the air inlet of the air duct 2.
With continued reference to fig. 2, the air-cooling type refrigerating apparatus includes two storage compartments 1, and a damper 5 is provided in the air duct 2, the damper 5 being used to control whether the air cooled by the evaporator 4 flows toward the upper storage compartment 1.
In some embodiments of the present invention, when the evaporator 3 performs defrosting and pre-cooling, the damper 5 is closed, and the air heated or cooled by the evaporator 4 is prohibited from flowing upward to the storage chamber 1.
When the fan 4 is rotated in the normal direction in the state where the damper 5 is closed, the driving air flows in the direction shown by the solid arrow in fig. 2.
When the fan 4 is reversed in the state where the damper 5 is closed, the driving air flows in the direction shown by the broken line arrow in fig. 2.
It should be noted that although two storage chambers 1 are shown in the drawings, one skilled in the art can arrange the storage chambers 1 in any other number, such as one, three, five, etc., as needed.
Further, it should be noted that, although in some embodiments of the present invention, the fan 4 is only configured for the storage room 1 below, in other embodiments of the present invention, one fan 4 may be configured for each storage room 1 according to needs by those skilled in the art. When one of the fans 4 rotates reversely, the other fans 4 stop rotating or rotate reversely at the same time, so that the air in the air duct 2 can flow reversely.
A control method of the air-cooling type refrigerating apparatus according to the present invention will be described in detail with reference to fig. 1 to 3.
As shown in fig. 3, in some embodiments of the present invention, a method of controlling an air-cooled refrigeration apparatus includes:
and step S100, responding to the end of defrosting of the evaporator 3, pre-cooling the evaporator 3 and stopping the fan 4 from rotating.
As can be understood by those skilled in the art, the evaporator 3 is heated during defrosting, so that the temperature of the evaporator 3 is high, and if the fan 4 is operated immediately after defrosting of the evaporator 3 is finished, air flowing through the evaporator 3 is heated by the evaporator 3, and the air heated by the evaporator 3 enters the storage room 1 to heat the stored object in the storage room 1, which affects the refrigerating effect of the stored object.
Therefore, in some embodiments of the present invention, after defrosting of the evaporator 3 is completed, the evaporator 3 is pre-cooled to cool the evaporator 3, preventing the evaporator 3 from heating the air entering the storage chamber 1. Further, by keeping the fan 4 in the stopped state, it is avoided that the evaporator 3 is not completely cooled and air flows through the evaporator 3, thereby preventing hot air from entering the storage chamber 1.
In the process of executing step S100, the damper 5 is in the closed state.
In response to the evaporator 3 reaching the first pre-cooling condition, the fan 4 is reversed while the evaporator 3 continues to maintain the pre-cooling at step S200.
Wherein the first pre-cooling condition includes that the temperature of the evaporator 3 is less than/equal to a preset temperature value. The preset temperature value is not greater than the normal refrigerating temperature of the storage compartment 1 and may be any feasible value, such as-16 ℃, -18 ℃, -24 ℃, -29 ℃, -30.5 ℃ and the like.
The control strategy for reversing the fan 4 will be explained below by way of example.
As an example one, reversing the fan 4 includes:
step S211 of reversing the fan 4 at the first rotation speed;
in response to the air temperature in the duct 2 being equal to the air temperature in the storage chamber 1, the fan 4 is reversed at the second rotation speed S212.
Wherein the first rotational speed is greater than the second rotational speed, optionally the first rotational speed is a maximum rotational speed of the fan 4. Further optionally, the second rotation speed is lower than the first rotation speed by any rotation speed such as 150r/min, 300r/min, 500r/min, 1500r/min, and the like.
As a second example, the air-cooling type refrigeration apparatus further includes a temperature sensor 7 (shown in fig. 2), and the temperature sensor 7 is located upstream of the air passage of the evaporator 3 during normal cooling (shown in fig. 2) so that the temperature sensor 7 detects the temperature of the air after passing through the evaporator 3 during reverse flow.
In this example, reversing the fan 4 comprises: the rotation speed of the fan 4 at the time of reverse rotation is controlled based on the detection result of the temperature sensor 7. The method specifically comprises the following steps:
step S221, comparing the temperature value detected by the temperature sensor 7 with a preset temperature range.
Wherein the predetermined temperature range is not greater than the normal refrigerating temperature of the storage compartment 1 and can be any feasible value range such as [ -16 ℃, [ -15 ℃ ], [ -18 ℃, [ -16 ℃, [ -21 ℃, — -17 ℃ ], (-18 ℃, — -15 ℃ ], and the like.
Step S222, when the temperature value is smaller than the minimum value in the preset temperature range, increasing the rotation speed of the fan 4 to reduce the contact time and the heat exchange time between the air and the evaporator 3, thereby increasing the temperature of the air after flowing through the evaporator 3.
The speed increasing amplitude can be any feasible value, such as 200r/min, 500r/min, 800r/min, and the like.
Further, after the rotating speed of the fan 4 is increased for a period of time (for example, any value such as 5min, 10min, 12min, etc.), if the temperature value detected by the temperature sensor 7 is still smaller than the minimum value within the preset temperature range, the rotating speed of the fan 4 is continuously increased.
In step S223, which is parallel to step S222, when the temperature value is greater than the minimum value in the preset temperature range, the rotation speed of the fan 4 is reduced to increase the contact time and the heat exchange time between the air and the evaporator 3, so as to reduce the temperature of the air after flowing through the evaporator 3.
The amplitude of the reduction of the rotational speed may be any feasible value, such as 200r/min, 500r/min, 800r/min, etc.
Further, after the rotating speed of the fan 4 is reduced for a period of time (for example, any value such as 5min, 10min, 12min, etc.), the temperature value detected by the temperature sensor 7 is still greater than the maximum value within the preset temperature range, and then the rotating speed of the fan 4 is continuously reduced.
As example three, reversing the fan 4 includes: the rotation speed of the fan 4 is gradually increased according to the set frequency.
As will be understood by those skilled in the art, during the reverse rotation of the blower 4, as the air at a lower temperature in the storage chamber 1 enters the air duct 2, the temperature of the air in the air duct 2 is gradually decreased, so that the contact time between the air and the evaporator 3 when the air passes through the evaporator 3 can be appropriately shortened. Therefore, in the process of reversing the fan 4, the air in the air duct 2 can also enter the storage chamber 1 at a low and constant temperature by gradually increasing the rotation speed of the fan 4 according to a preset frequency.
The set frequency may be any feasible value, for example, the rotation speed of the fan 4 is increased by any feasible value such as 200r/min, 300r/min, 500r/min at intervals (e.g., 3min, 5min, 10min, etc.).
Step S300, in response to the evaporator 3 reaching the second pre-cooling condition, the fan 4 is rotated forward to cool the evaporator 3 normally, and the damper 5 is opened.
In step S300, the second pre-cooling condition includes operating the fan 4 at the second rotation speed for the first preset time, corresponding to the first example in step S200. The first predetermined time may be any feasible value, such as 4min, 5min, 7min, 12min, and so on.
In step S300, corresponding to the example two and/or the example three phase in step S200, temperature sensors are further respectively provided in the air duct 2 and the storage chamber 1 for respectively detecting the temperatures of the air in the air duct 2 and the storage chamber 1. Further, the second pre-cooling condition includes that the temperature of the air in the duct 2 is lowered to be equal to the temperature of the air in the storage chamber 1. Preferably, the second pre-cooling condition further includes that a duration for which the temperature of the air in the duct 2 is not greater than the temperature of the air in the storage compartment 1 reaches a second preset time; that is, the second pre-cooling condition is that the temperature of the air in the duct 2 is reduced to not more than the temperature of the air in the storage chamber 1 for a second preset time. The second preset time can be any feasible value, such as 1min, 1.5min, 2min, 4min, and the like.
Based on the foregoing description, it can be understood by those skilled in the art that the fan 4 is reversed when the evaporator 3 reaches the first pre-cooling condition, so that the fan 4 drives the hot air in the air duct 2 to flow in the reverse direction, and then all or almost all of the hot air flows through the evaporator 3 and is cooled by the low-temperature evaporator 3, thereby overcoming the problem that the temperature of the air entering the storage chamber 1 is too high, which causes the temperature of the storage chamber 1 to rise, and affects the freshness keeping of the food materials.
Further, the distance between the evaporator 3 and the air inlet of the air duct 2 is smaller than the distance between the evaporator 3 and the air outlet of the air duct 2, so that the hot air in the air duct 2 can be located at the downstream of the evaporator 3 (when the fan 4 rotates forwards) after the pre-cooling of the evaporator 3 is finished, and the hot air can flow through the evaporator 3 when the fan 4 rotates backwards.
Still further, through the rotational speed when controlling fan 4 reversal according to temperature sensor's testing result for the air that enters into storeroom 1 in the fan 4 reversal process can both get into storeroom 1 under lower, invariable temperature, has guaranteed the refrigeration of storeroom 1, cold-stored effect.
FIG. 4 is a graph of air temperature in the air chute 2 over time in some embodiments of the invention.
As shown in fig. 4, in the experiment according to some embodiments of the present invention, the a-b stage is a defrosting stage of the evaporator 3, the b-c stage is a pre-cooling stage of the evaporator 3 (the fan 4 stops rotating), the c-d stage is a reverse rotation stage of the fan 4, and the d-f stage is a normal cooling stage of the evaporator 3 (the fan 4 rotates forward).
As can be seen from FIG. 4, the temperature of the air in the air duct 2 can be effectively reduced by rotating the fan 4 in the reverse direction and then rotating the fan in the forward direction after the evaporator 3 is pre-cooled for a period of time, so that the temperature rise of the storage chamber 1 caused by the high-temperature air in the air duct 2 is avoided. So far, the technical solution of the present invention has been described in connection with the foregoing embodiments, but it is easily understood by those skilled in the art that the scope of the present invention is not limited to these specific embodiments. A person skilled in the art may split and combine the technical solutions in the above embodiments without departing from the technical principle of the present invention, and may also make equivalent changes or substitutions for the related technical features, and any changes, equivalents, improvements, etc. made within the technical idea and/or technical principle of the present invention will fall within the protection scope of the present invention.
Claims (10)
1. A control method of an air-cooled type refrigeration apparatus including a storage compartment, an air duct, an evaporator, and a fan for sending air cooled by the evaporator into the storage compartment;
the control method comprises the following steps:
in response to the end of defrosting of the evaporator, pre-refrigerating the evaporator and stopping the fan;
reversing the fan in response to the evaporator reaching a first pre-chill condition;
responsive to the evaporator reaching a second pre-chill condition, the fan is rotated forward.
2. The control method of the air-cooled type refrigerating apparatus according to claim 1,
said reversing said fan comprises:
reversing the fan at a first rotational speed;
reversing the fan at a second speed in response to the air temperature within the duct being equal to the air temperature within the storage chamber;
wherein the first rotational speed is greater than the second rotational speed.
3. The control method of an air-cooling type refrigerating apparatus according to claim 2, wherein,
the second pre-cooling condition comprises operating the fan at the second speed for a first preset time;
said responsive to the evaporator reaching a second pre-chill condition, positively rotating the fan, comprising:
and responding to the fan running at the second rotating speed for the first preset time, enabling the fan to rotate forwards, and enabling the evaporator to refrigerate normally.
4. The control method of an air-cooled type refrigerating apparatus according to claim 1, wherein,
the air-cooled refrigeration appliance includes a temperature sensor,
the temperature sensor is positioned at the upstream of the air path when the evaporator is in normal refrigeration;
the making the fan reverse, including:
and controlling the rotating speed of the fan during reverse rotation according to the detection result of the temperature sensor.
5. The control method of an air-cooling type refrigerating apparatus according to claim 4, wherein,
the rotating speed of the fan during the reverse rotation is controlled according to the detection result of the temperature sensor, and the method comprises the following steps:
comparing the temperature value detected by the temperature sensor with a preset temperature range;
when the temperature value is smaller than the minimum value in the preset temperature range, the rotating speed of the fan is increased;
and when the temperature value is larger than the minimum value in the preset temperature range, reducing the rotating speed of the fan.
6. The control method of an air-cooling type refrigerating apparatus according to claim 5, wherein,
the second pre-cooling condition includes the temperature of the air within the duct being reduced to equal the temperature of the air within the storage compartment.
7. The control method of an air-cooled type refrigerating apparatus according to claim 6, wherein,
the second pre-cooling condition further includes that a duration of time during which the temperature of the air within the duct is not greater than the temperature of the air within the storage chamber reaches a second preset time.
8. The control method of an air-cooled type refrigerating apparatus according to claim 1, wherein,
said reversing said fan comprises:
and gradually increasing the rotating speed of the fan according to a set frequency.
9. The control method of the air-cooled type refrigerating apparatus according to any one of claims 1 to 8, wherein,
the first pre-cooling condition comprises that the temperature of the evaporator is less than or equal to a preset temperature value; and/or the like, and/or,
the distance between the evaporator and the air inlet of the air duct is smaller than the distance between the evaporator and the air outlet of the air duct.
10. An air-cooled refrigeration appliance comprising a processor, a memory and executable instructions stored on the memory, the executable instructions being arranged such that, when executed by the processor, they cause the air-cooled refrigeration appliance to perform the control method of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110839140.8A CN115682504A (en) | 2021-07-23 | 2021-07-23 | Air-cooled refrigeration equipment and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110839140.8A CN115682504A (en) | 2021-07-23 | 2021-07-23 | Air-cooled refrigeration equipment and control method thereof |
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| CN115682504A true CN115682504A (en) | 2023-02-03 |
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| CN202110839140.8A Pending CN115682504A (en) | 2021-07-23 | 2021-07-23 | Air-cooled refrigeration equipment and control method thereof |
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