CN112060855B - Cold chain transportation control device, refrigerating unit and transport tool - Google Patents
Cold chain transportation control device, refrigerating unit and transport tool Download PDFInfo
- Publication number
- CN112060855B CN112060855B CN202010901330.3A CN202010901330A CN112060855B CN 112060855 B CN112060855 B CN 112060855B CN 202010901330 A CN202010901330 A CN 202010901330A CN 112060855 B CN112060855 B CN 112060855B
- Authority
- CN
- China
- Prior art keywords
- control device
- cold chain
- temperature
- humidity
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
- B60H1/00785—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models by the detection of humidity or frost
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
- B60H1/00878—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being temperature regulating devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
- B60H3/02—Moistening ; Devices influencing humidity levels, i.e. humidity control
- B60H3/022—Moistening ; Devices influencing humidity levels, i.e. humidity control for only humidifying the air
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The application relates to a cold chain transportation control device, a refrigerating unit and a transportation tool. The device comprises a humidity detection device, a humidifying device, a control device, a temperature detection device and a heating device, wherein the humidity detection device is used for detecting the ambient humidity in the cold chain transport box and sending the ambient humidity to the control device, the temperature detection device is used for detecting the temperature in the cold chain transport box and sending the temperature to the control device, the control device is used for controlling the humidifying device to humidify the cold chain transport box when the ambient humidity is less than a preset humidity threshold value, so that the condition that the quality of articles is influenced due to too low humidity in the cold chain transport box is avoided, the control device is also used for controlling the heating device to heat the humidifying device when the temperature in the cold chain transport box is less than the preset temperature threshold value, the humidifying device can be prevented from being frozen due to too low temperature and being incapable of working, the ambient humidity in the cold chain transport box is maintained in a proper range, and the quality of the articles stored in the box is improved, the use reliability of cold chain transportation is improved.
Description
Technical Field
The application relates to the technical field of cold chain transportation, in particular to a cold chain transportation control device, a refrigerating unit and a transportation tool.
Background
With the development of national economy and the increase of the dominable income of the people, people pay more attention to food safety and pay more attention to the freshness of food materials, so that cold chain logistics cater to the high-speed development stage. Cold chain logistics is a transportation mode that food or other articles are stored in a low-temperature box for transportation to guarantee the quality and performance of the articles, and is generally realized by vehicles such as cold chain vehicles.
In traditional cold chain transportation, generally, the emphasis is on controlling the temperature in the carriage to ensure the freshness of food, and a humidifying device is also arranged in part of the carriage to improve the humidity in the carriage, which is beneficial to the storage of articles. However, when the frozen goods are transported, the freezing condition can be generated in the carriage, the temperature can be reduced to below 0 ℃, water in the water tank of the humidifying device can be frozen at the moment, the humidifying device cannot normally work, and the reliability of the traditional cold chain vehicle is low.
Disclosure of Invention
The invention provides a cold chain transportation control device, a refrigerating unit and a transportation tool aiming at the problem of low use reliability of a traditional cold chain vehicle.
A cold chain transportation control device comprises a humidity detection device, a humidification device, a control device, a temperature detection device and a heating device, wherein the humidity detection device, the humidification device, the temperature detection device and the heating device are all connected with the control device;
humidity detection device is used for detecting the ambient humidity in the cold chain transport case and sends to controlling means, temperature-detecting device is used for detecting temperature in the cold chain transport case and sends to controlling means, controlling means is used for when ambient humidity is less than predetermineeing the humidity threshold value, control humidification device is right cold chain transport case humidification still is used for when the temperature in the cold chain transport case is less than predetermineeing the temperature threshold value, control heating device is right humidification device heats.
The cold chain transportation control device comprises a humidity detection device, a humidification device, a control device, a temperature detection device and a heating device, wherein the humidity detection device, the humidification device, the temperature detection device and the heating device are all connected with the control device, the humidity detection device is used for detecting the environmental humidity in the cold chain transportation box and sending the environmental humidity to the control device, the temperature detection device is used for detecting the temperature in the cold chain transportation box and sending the temperature to the control device, the control device is used for controlling the humidification device to humidify the cold chain transportation box when the environmental humidity is less than a preset humidity threshold value, so that the phenomenon that the quality of articles is influenced due to too low humidity in the cold chain transportation box is avoided, the control device is also used for controlling the heating device to heat the humidification device when the temperature in the cold chain transportation box is less than the preset temperature threshold value, and the humidification device can be prevented from being frozen due to too low temperature and being incapable of working, the environmental humidity in the cold chain transportation box is maintained in a proper range, the quality of articles stored in the box is improved, and the use reliability of cold chain transportation is improved.
In one embodiment, the heating device is a self-temperature-limiting heat tracing band which is arranged in a water tank of the humidifying device.
In one embodiment, the control device controls the heating device to heat the humidifying device at preset time intervals when the temperature in the cold chain transportation box is smaller than a preset temperature threshold.
In one embodiment, the cold chain transportation control device further comprises a humidity value acquisition device, and the humidity value acquisition device is connected with the control device.
In one embodiment, the humidity value obtaining device is an object type obtaining device, the object type obtaining device is configured to identify an object type in the cold chain transportation box, obtain type information, and send the type information to the control device, and the control device is configured to match a corresponding humidity value according to the type information to serve as a preset humidity threshold value.
In one embodiment, the humidifying device comprises a water tank and a steam generating device, the water tank and the control device are both connected with the steam generating device, and the water tank is also used for being connected with an evaporator of a refrigerating unit.
In one embodiment, the cold chain transportation control device further comprises a liquid level sensor, the liquid level sensor is arranged in the water tank, and the liquid level sensor is connected with the control device.
In one embodiment, the control device is further configured to maintain the temperature inside the cold chain transportation box when the humidifying device is turned off.
A cold chain transportation refrigerating unit comprises an evaporator and the cold chain transportation control device.
The cold chain transportation refrigerating unit comprises a humidity detection device, a humidifying device, a control device, a temperature detection device and a heating device, wherein the humidity detection device, the humidifying device, the temperature detection device and the heating device are all connected with the control device, the humidity detection device is used for detecting the ambient humidity in the cold chain transportation box and sending the ambient humidity to the control device, the temperature detection device is used for detecting the temperature in the cold chain transportation box and sending the temperature to the control device, the control device is used for controlling the humidifying device to humidify the cold chain transportation box when the ambient humidity is less than a preset humidity threshold value, so that the phenomenon that the quality of articles is influenced due to too low humidity in the cold chain transportation box is avoided, the control device is also used for controlling the heating device to heat the humidifying device when the temperature in the cold chain transportation box is less than the preset temperature threshold value, and the humidifying device can be prevented from being frozen due to too low temperature and being incapable of working, the environmental humidity in the cold chain transportation box is maintained in a proper range, the quality of articles stored in the box is improved, and the use reliability of cold chain transportation is improved.
A transport means comprises a cold chain transport box and a cold chain transport refrigeration unit as described above.
The transportation tool comprises a humidity detection device, a humidifying device, a control device, a temperature detection device and a heating device, wherein the humidity detection device, the humidifying device, the temperature detection device and the heating device are all connected with the control device, the humidity detection device is used for detecting the ambient humidity in the cold chain transportation box and sending the ambient humidity to the control device, the temperature detection device is used for detecting the temperature in the cold chain transportation box and sending the temperature to the control device, the control device is used for controlling the humidifying device to humidify the cold chain transportation box when the ambient humidity is less than a preset humidity threshold value, so that the phenomenon that the quality of articles is influenced due to too low humidity in the cold chain transportation box is avoided, the control device is also used for controlling the heating device to heat the humidifying device when the temperature in the cold chain transportation box is less than the preset temperature threshold value, the humidifying device can be prevented from being frozen due to too low temperature, and the ambient humidity in the cold chain transportation box is kept in a proper range, the quality of the articles stored in the box body is improved, and the use reliability of cold chain transportation is improved.
Drawings
FIG. 1 is a block diagram of a cold chain transport control apparatus according to one embodiment;
FIG. 2 is a block diagram showing the construction of a cold chain transportation control apparatus according to another embodiment;
FIG. 3 is a schematic view showing the structure of a condensate water collecting apparatus according to an embodiment;
FIG. 4 is a schematic view showing a connection structure between self-temperature-limiting heat tracing bands in one embodiment;
FIG. 5 is a schematic diagram of the construction of a cold chain transport control apparatus in one embodiment;
FIG. 6 is a schematic view of a vehicle in one implementation.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described more fully below by way of examples in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Cold chain transportation, i.e. cold chain logistics, generally refers to a system project that refrigerated and frozen goods are always in a specified low-temperature environment in all links before production, storage, transportation and sale and consumption so as to ensure the quality and performance of the goods, and the goods can be food or medicines and the like. In the present application, the cold chain transportation control device is installed in a vehicle for cold chain transportation, specifically, in a cold chain transportation box of the vehicle, which includes, but is not limited to, a car, a ship, an airplane, etc., and is not limited herein.
In an embodiment, please refer to fig. 1, which provides a cold chain transportation control device, the device includes a humidity detection device 110, a humidification device 310, a control device 200, a temperature detection device 120, and a heating device 320, the humidity detection device 110, the humidification device 310, the temperature detection device 120, and the heating device 320 are all connected to the control device 200, the humidity detection device 110 is configured to detect an ambient humidity inside a cold chain transportation box and send the ambient humidity to the control device 200, the temperature detection device 120 is configured to detect a temperature inside the cold chain transportation box and send the temperature to the control device 200, the control device 200 is configured to control the humidification device 310 to humidify the cold chain transportation box when the ambient humidity is less than a preset humidity threshold, and is further configured to control the heating device 320 to heat the humidification device 310 when the temperature inside the cold chain transportation box is less than the preset temperature threshold. Controlling means 200 is when ambient humidity is less than predetermineeing the humidity threshold value, control humidification device 310 is to cold chain transport box humidification, avoid the humidity in the cold chain transport box to cross low influence article quality, controlling means 200 still is used for when the temperature in the cold chain transport box is less than predetermineeing the temperature threshold value, control heating device 320 heats humidification device 310, can prevent humidification device 310 because the temperature crosses low and leads to freezing and can not work, make the ambient humidity in the cold chain transport box maintain in suitable scope, be favorable to improving the quality of the article of storage in the box, the use reliability of cold chain transportation has been improved.
Specifically, for example, a cold chain transport box is taken as a compartment of a cold chain vehicle, a refrigerating unit is arranged in the cold chain vehicle, and the refrigerating unit is used for cooling air in the compartment so as to prolong the freshness keeping time of articles stored in the compartment. Humidity detection device 110 sets up in the carriage for detect the ambient humidity in the carriage and send to controlling means 200, humidification device 310 also sets up in the carriage, perhaps humidification device 310's steam outlet and the inside environment intercommunication in carriage, can transmit the steam that produces to the carriage in, thereby increase the ambient humidity in the carriage, create better storage condition for the article in the carriage. The temperature detection device 120 and the heating device 320 are also disposed in the vehicle cabin, the temperature detection device 120 is used for detecting the temperature in the vehicle cabin and sending the temperature to the control device 200, and the heating device 320 is used for heating the heating device 320 according to the control of the control device 200. The value of the preset humidity threshold is not unique, and can be selected according to an empirical value or determined according to the condition that the types of the articles stored in the carriage are suitable for storage. The value of the preset temperature threshold is not unique, generally speaking, the preset temperature threshold may be a value within a range of 0-1 ℃, when the temperature in the cold chain transportation box is lower than the preset temperature threshold, it is considered that water in the humidifying device 310 is also easy to freeze at the current temperature, and at this time, the control device 200 controls the heating device 320 to heat the humidifying device 310, so as to prevent the humidifying device 310 from freezing.
Further, the temperature detecting device 120 may be disposed near the humidifying device 310 or on the surface of the humidifying device 310 to detect the temperature of the environment around the humidifying device 310 and send the detected temperature to the control device 200, and the heating device 320 may also be disposed near the humidifying device 310 or on the surface of the humidifying device 310 to reduce heat loss and improve the heating effect of the heating device 320 by the heating device 320. The control device 200 may be an independent controller, which may be connected to a manual operator in the cab, to facilitate signal interaction, to facilitate the driver to control the environment in the cabin, etc. Alternatively, the control device 200 may adopt an existing controller in the cab, and the corresponding functions of the control device 200 may be added to the existing controller to save the hardware cost.
The types of the humidity detection device 110 and the temperature detection device 120 are not exclusive, for example, the humidity detection device 110 may be a humidity sensor, the humidity sensor converts the detected humidity into an electrical signal and then sends the electrical signal to the control device 200, the temperature detection device 120 may be a temperature sensor, the temperature sensor converts the detected temperature into a corresponding electrical signal and sends the corresponding electrical signal to the control device 200, and the control device 200 analyzes and processes the received electrical signal to obtain the current ambient humidity value and the current ambient temperature value in the vehicle compartment, which are used as the basis for subsequent control. The humidity sensor and the temperature sensor have lower cost and are convenient and quick to use. The type of the humidifying device 310 is not exclusive, and may be, for example, an ultrasonic atomizing device, which converts electric energy into sound waves with ultrahigh audio frequency, and causes the aqueous solution to vibrate to generate aerosol particles, and the delivery of the aerosol particles into the vehicle cabin may increase the ambient humidity in the vehicle cabin. The ultrasonic atomization device is adopted as the humidifying device 310 to generate water vapor with high speed and high humidifying efficiency.
The control device 200 can be a single chip microcomputer, the single chip microcomputer serves as the control device 200, all functional components can be integrated on one chip, a bus structure is adopted in the control device, connecting lines among the chips are reduced, and the control device is high in anti-interference capability, high in integration level and good in reliability. The heating device 320 can be a resistance wire type heating device 320, the resistance wire type heating device 320 can convert electric energy into electric energy, after the power is turned on, the resistance wire generates heat, the generated heat is applied to the humidifying device 310, the temperature of the humidifying device 310 is increased, the condition that the humidifying device 310 cannot work due to the fact that water in a water tank of the humidifying device 310 or water in an inlet pipe and a outlet pipe is frozen is avoided, and the working performance of the humidifying device 310 is improved. It is understood that in other embodiments, the humidity detection device 110, the humidification device 310, the control device 200, the temperature detection device 120 and the heating device 320 may be other types of devices as long as the skilled person can realize the above.
In one embodiment, the heating device 320 is a self-temperature-limiting heat tracing band, and the self-temperature-limiting heat tracing band is disposed in a water tank of the humidifying device 310. The self-temperature-limiting heat tracing band is arranged in the water tank of the humidifying device 310, water in the water tank can be heated, the water in the water tank is frozen in advance, and when the water in the water tank is frozen, the speed of the water in the water tank can be increased and the water in the water tank can be melted. The self-temperature-limiting heat tracing band can automatically limit the temperature during heating and automatically adjust the output power along with the temperature of a heated body without any additional equipment, and is convenient and fast to use.
Specifically, the self-temperature-limiting heat tracing band comprises nanometer conductive carbon particles and two parallel buses, an insulating layer is additionally arranged on the two parallel buses, when the ambient temperature rises, the conductive plastic in the heat tracing band expands micro molecules, the carbon particles gradually separate, the circuit terminal is caused, the resistance rises, and the heat tracing band can automatically reduce the power output. When the ambient temperature is cooled, the plastic returns to a micro-molecular shrinkage state, the carbon particles are correspondingly connected to form a circuit, and the heating power of the heat tracing band automatically rises, so that the temperature during heating is automatically limited, and the overhigh temperature is avoided. The self-temperature-limiting heat tracing band is arranged on the outer wall of the water tank of the humidifying device 310 in a winding mode, so that the contact area between the self-temperature-limiting heat tracing band and the water tank is increased, and the heating efficiency is improved. Referring to fig. 4, a plurality of self-temperature-limiting heat tracing bands can be connected in series through hooks to increase the length of the heat tracing bands, and springs can be arranged between the heat tracing bands to achieve good extensibility and facilitate winding.
In one embodiment, the control device 200 is configured to control the heating device 320 to heat the humidifying device 310 at preset time intervals when the temperature inside the cold chain transportation box is less than a preset temperature threshold. Under the current conditions, controlling the heating device 320 to heat the humidifying device 310 at the preset time interval can prevent the heating device 320 from generating excessive heat to the humidifying device 310, which causes the temperature of the humidifying device 310 to be too high and thus affects the working performance of the humidifying device 310.
Specifically, when the temperature inside the cold chain transportation box is less than the preset temperature threshold, the control device 200 controls the heating device 320 to heat the humidifying device 310 at preset time intervals, considering that the water inside the humidifying device 310 is easy to freeze at the current temperature. Therefore, the humidifying device 310 can be prevented from freezing, and as the heating device 320 heats the humidifying device 310 according to the preset time interval, and partial heat can be dissipated in the middle interval, the situation that the heating device 320 continuously generates heat to cause overhigh temperature of the humidifying device 310 can be avoided, the normal work of the humidifying device 310 can be maintained, and the effect of saving electric energy can be achieved. The specific value of the preset time interval is not unique and can be adjusted according to actual requirements.
In one embodiment, referring to fig. 2, the cold chain transportation control device further includes a humidity value obtaining device 130, and the humidity value obtaining device 130 is connected to the control device 200. The humidity value acquiring device 130 may be configured to acquire a humidity value and send the humidity value to the control device 200, and the control device 200 is configured to control the operation of the humidifying device 310 according to the received humidity value.
Specifically, the type of the humidity value obtaining device 130 is not exclusive, and in this embodiment, the humidity value obtaining device 130 may be an input device, the input device may receive a user instruction input by a user, and then transmit the received user instruction to the control device 200, the control device 200 obtains a humidity value according to the received user instruction, and controls the operation of the humidifying device 310 according to the humidity value, and when the ambient humidity in the cold chain transportation box is less than the humidity value obtained according to the humidity value obtaining device 130, the humidifying device 310 is controlled to humidify the box, and further, the operation time and power of the humidifying device 310 may be controlled.
The input device can be arranged in a cab, and is a cab manual operator, so that a driver can conveniently set the humidity value in the cold chain transport box body. Further, taking the input device as the cab manipulator as an example, after knowing the articles in the cold chain transportation box, the driver can set an ideal cargo storage humidity value through the cab manipulator according to experience values or related knowledge, or if the driver does not know the proper humidity of the pulled cargo, the driver can select product details on the manipulator and automatically set humidity requirement data of different products stored in a storage library in the manipulator chip.
In an extensible manner, humidity requirement data of different products stored in the hand operator chip memory bank is preset, and each product corresponds to a proper humidity value or humidity range. The data in the storage base can be updated when needed or according to a certain time interval so as to improve the accuracy and richness of the stored data. The following data are available for reference: when the types of the articles in the box body are fresh fruits, vegetables and the like, the corresponding suitable humidity value range is 95% -100%, when the types of the articles in the box body are mushrooms, the corresponding suitable humidity value range is 95%, when the types of the articles in the box body are aquatic products, the corresponding suitable humidity value range is 95% -100%, when the types of the articles in the box body are rhizomes, the corresponding suitable humidity value range is 70% -80%, when the types of the articles in the box body are medicines, the corresponding suitable humidity value range is 45% -60%, when the types of the articles in the box body are dry fruits, the corresponding suitable humidity value range is 50% -60%, and when the types of the articles in the box body are meat dairy products, the corresponding suitable humidity value range is 75% -85%. It will be appreciated that when multiple types of items are contained within the cold chain conveyor box, the corresponding predetermined humidity threshold may correspond to a greater number of types of items. Or, the humidity of different areas can be controlled in a partitioning way according to different types of articles stored in each area in the box body. Other articles can be stored in the cold chain transport box body, and the corresponding humidity threshold value can be other numerical values as long as the humidity threshold value can be realized by timely personnel in the field.
In one embodiment, the humidity value obtaining device 130 is an object type obtaining device, the object type obtaining device is configured to identify an object type in the cold chain transportation box, obtain type information, and send the type information to the control device 200, and the control device 200 is configured to match a corresponding humidity value according to the type information. The object type identified by the object type device is matched with the corresponding humidity value to serve as a preset humidity threshold value, and the matched humidity value is used as a basis to control the humidifying device 310 to work, so that automatic acquisition, automatic setting and automatic adjustment of the humidity value in the cold chain transport box can be realized, and the intelligent degree of the cold chain transport control device is improved.
Specifically, the type of the object type device is not unique, and may be, for example, a camera, where the camera collects an image of a stored article of the cold chain transportation box, compares the collected image with the stored image, and if a similarity between the collected image and the stored image is greater than or equal to a preset similarity threshold, takes a corresponding type of the stored image as the type information of the identified article. Based on the acquired type information, humidity data corresponding to the current type information is acquired from humidity data of different products stored in the control device 200 or a storage library in the manual operator chip as a preset humidity threshold, so that the intelligent setting of the humidity threshold is realized, the automatic control of the humidifying device 310 can be realized based on the intelligent setting, and the use convenience is improved. In an extensible manner, temperature data corresponding to the current type information can be acquired based on the acquired type information to serve as a preset temperature threshold, and automatic setting of the article storage temperature is achieved.
In one embodiment, the humidifying device 310 includes a water tank and a steam generating device, the water tank and the control device 200 are both connected to the steam generating device, and the water tank is also used for connecting with an evaporator of a refrigerating unit. The water tank is connected with the evaporator of the refrigerating unit, and can collect condensed water generated by the evaporator of the refrigerating unit so as to enable the steam generating device to generate atomized water molecules to be transmitted into the cold chain conveying box body to play a role in humidification. The water in the humidifying device 310 is taken from the condensed water discharged by the refrigerating unit, so that the condensed water can be recycled, and a water source is automatically supplemented along with the starting of the refrigerating unit without manual addition.
Specifically, the refrigeration unit includes an inclined evaporator, the inclined evaporator forms an oblique angle with the chassis, please refer to fig. 3, a concave aluminum alloy water receiving tank is fixed at the lower side of the evaporator and is responsible for collecting condensed water. The humidifying device 310 includes a water tank and a steam generating device, the water tank is connected to the refrigerating unit, and specifically, the water tank is connected to the evaporator of the refrigerating unit. The water tank is connected with the water receiving tank through a hose and serves as a water inlet of the water tank, and a water outlet and a water filling port are additionally arranged on the water tank. The condensed water generated by the heat exchange of the evaporator of the refrigerating unit can drip or slide into the water receiving tank under the action of gravity, and the water in the water tank is conveyed to the water inlet of the water tank with a lower position through a hose. Because the humidifying device 310 can continuously consume water in the water tank when working, and the evaporator condensed water can continuously exist along with the starting, the condensed water is utilized to continuously supply water to the water tank of the humidifying device 310, and the water adding times of the water tank of the humidifying device 310 can be effectively reduced. If the amount of the condensed water is larger than the evaporation rate or the humidifying device 310 stops working to cause the capacity of the water tank to be over-full, the water exceeding the capacity of the water tank can be discharged out of the unit through the water discharge port and the water discharge pipe, so that the humidifying device 310 can work normally. The water in the humidifying device 310 is taken from the condensed water discharged by the refrigerating unit, so that the condensed water can be recycled, a water source is automatically supplemented along with the starting of the unit, manual addition is not needed, and the use convenience is improved.
In one embodiment, the cold chain transportation control device further comprises a liquid level sensor, the liquid level sensor is arranged in the water tank, and the liquid level sensor is connected with the control device 200. The liquid level sensor can detect the liquid level of the water tank and send the detection result to the control device 200, so that the liquid level of the water tank is monitored.
Specifically, level sensor detects the liquid level of water tank and sends the testing result to controlling means 200, and controlling means 200 obtains current water tank liquid level according to the testing result analysis, compares current water tank liquid level with predetermineeing the liquid level, and when current water tank liquid level was less than or equal to and predetermines liquid level lower limit value, controlling means 200 sent alarm command to alarm device, and alarm device reports to the police after receiving alarm command, reminds user's water tank lack of water, needs in time to supply. In addition, when the current water tank liquid level is too low, the control device 200 can also control the humidifying device 310 to stop working, so that the energy waste and the device loss caused by the no-load operation of the humidifying device 310 are avoided. Use humidification device 310 to include water tank and steam generator, water tank and controlling means 200 all connect steam generator, the refrigeration unit is connected to the water tank for the example, be provided with level sensor in the water tank, when the speed of humidification device 310 evaporation water is greater than the speed that the refrigeration unit produced the comdenstion water, water in the water tank can continuously reduce, when being close to the warning line (predetermineeing liquid level lower limit value promptly), level sensor return signal to controlling means 200, controlling means 200 sends out the warning of lack of water through communication line transmission to the driver's cabin hand manipulator after handling, remind the driver to need manually increase the water tank water yield by the water tank water filling port, satisfy humidification device 310 work. When the water level reaches below the warning line, the humidifying device 310 will automatically stop and feed back a stop signal to the cab manipulator, and the cab manipulator can be controlled to start up again after the condensed water is supplemented or water is added to the water level above the warning line. If the amount of condensed water is greater than the evaporation rate or the humidifying device 310 stops working to cause the capacity of the water tank to be over-full, the water exceeding the capacity of the water tank can be discharged out of the unit through the water outlet and the water discharge pipe. The humidifying device 310 is provided with a liquid level sensor in the water storage tank, the liquid level condition of the water storage tank is monitored in real time, a driver is reminded of adding water when the liquid level reaches a warning line, the humidifying device 310 is protected to stop when the liquid level is lower than a lowest line, and the humidifying device is automatically restarted when the liquid level reaches a certain height, so that the liquid level of the water tank is kept in a proper range.
In one embodiment, the control device 200 is also used to preserve the temperature inside the cold chain transportation box when the humidifying device 310 is turned off. After the temperature is saved, before the next startup, if the temperature is a subzero value, the control device 200 may first control the heating device 320 to preheat the humidifying device 310, so as to enable the humidifying device 310 to operate normally. Specifically, the control device 200 is a main control board, the main control board sets temperature memory, records the temperature before shutdown, and sets the self-temperature-limiting heat tracing band to be powered on to preheat for three minutes and then to start the humidifying device 310 to facilitate normal operation of the humidifying device 310 in order to prevent the water in the water tank from being frozen and the condensate water from being discharged if the temperature before shutdown is a zero value.
For a better understanding of the above embodiments, the following detailed description is given in conjunction with a specific embodiment. In one embodiment, referring to fig. 5, the cold chain transportation control device is designed to utilize the waste condensed water to change the waste condensed water into steam to maintain and increase the humidity in the compartment, so as to create a good transportation condition for fresh products.
The refrigerating unit adopts an inclined evaporator which forms an oblique angle with the chassis, and a concave aluminum alloy water receiving tank is fixed at the lower side of the evaporator and is responsible for collecting condensed water. The humidity detection device 110 is a humidity sensor, the humidification device 310 is a humidifier, the temperature detection device 120 is a temperature sensor, the heating device 320 is a self-temperature-limiting heat tracing band, and the humidity value acquisition device 130 is a cab hand operator. The humidifying device 310 is divided into two parts, including a water tank and a steam generating device, the water tank is connected with the water receiving tank through a hose and serves as a water inlet of the water tank, and the water tank is further provided with a water outlet and a water filling port. A liquid level sensor is arranged in the water tank, and a unit is provided with a humidity sensor. The control device 200 is a main board of the unit, and the main board of the unit is connected with the cab manual operator, the steam generating device, the liquid level sensor and the humidity sensor to realize the implementation and control of the humidifying function.
After the goods are loaded on the refrigerator car, the refrigerating unit is operated. The driver can set an ideal cargo storage humidity value according to the cab hand operator, product details can be selected on the hand operator if the suitable humidity of the pulled cargo is not clear, and the humidity requirement data of different products are automatically set through the humidity requirement data stored in the hand operator chip memory. At the moment, the humidity sensor can return the humidity data in the carriage to the mainboard, and the mainboard program processes and outputs an instruction to control the steam generating device to be electrified and work, so that steam is generated to humidify the carriage. Meanwhile, condensed water generated by heat exchange of the evaporator of the refrigerating unit can drip or slide into the water receiving tank under the action of gravity, and water in the water tank is conveyed to the water inlet of the water tank at a lower position through the hose. Because the humidifier can continuously consume water in the water tank during working, and the evaporator condensate water can continuously exist along with starting, the humidifier water tank can be continuously supplied with water by utilizing the condensate water, so that the water adding times of the humidifier water tank can be effectively reduced. If the amount of the condensed water is larger than the evaporation speed or the humidifier stops working to cause the capacity of the water tank to be over-full, the water exceeding the capacity of the water tank can be discharged out of the unit through the water outlet and the water discharge pipe. Be provided with level sensor in the water tank, the speed of evaporating water when the humidifier is greater than the speed of unit comdenstion water, and water in the water tank can continuously reduce, and when being close to the warning line, level sensor return signal to mainboard, mainboard are handled the back and are transmitted the driver's cabin hand operator through the communication line and send out the warning of lack of water, remind the driver to need manually increase the water tank water yield by the water tank water filling port and satisfy humidifier work. When the water level reaches below the warning line, the humidifying device 310 will automatically stop and feed back a stop signal to the cab manipulator, and the cab manipulator can be controlled to start up again after the condensed water is supplemented or water is added to the water level above the warning line. When the refrigerating unit operates, if the refrigeration working condition below zero in the carriage is detected, the self-temperature-limiting heat tracing band wound outside the water tank is controlled to be opened according to the detected environment temperature value, and the power-on time of the self-temperature-limiting heat tracing band is controlled, so that the lower the temperature is, the longer the opening time is, and the electric energy is saved. The main control board sets temperature memory, records the temperature before shutdown, and sets the tracing band to be electrified firstly for preheating for three minutes and then start the refrigerating unit if the temperature before shutdown is a subzero value so as to prevent the condensate water from being discharged due to the fact that the water in the water tank is frozen when restarting.
A humidity sensor and a humidifying device 310 are added in the refrigerating unit of the refrigerator car, the sensor detects the outside humidity and feeds back the outside humidity to the control device 200, and when the outside humidity is lower than a preset humidity threshold value, a signal is output to control the humidifying device 310 to humidify the carriage. The cab manipulator can manually set the humidity value and can select the product category in the system storage database so as to select the recommended humidity value. The humidifying device 310 is wound with a self-temperature-limiting heat tracing band on the outer wall of the water tank, wherein the self-temperature-limiting heat tracing band can automatically limit the temperature during heating and automatically adjust the output power along with the heated temperature without any additional equipment. When the ambient temperature rises, the conductive plastic in the heat tracing band expands micro molecules, the carbon particles gradually separate, the circuit terminal is caused, the resistance rises, and the heat tracing band automatically reduces the power output. When the ambient temperature is cooled, the plastic returns to a micro-molecular contraction state, the carbon particles are correspondingly connected to form a circuit, and the heating power of the heat tracing band automatically rises. When the temperature of the inner ring of the carriage is too low, the control device 200 intermittently starts the self-temperature-limiting heat tracing band to prevent the water in the water tank from freezing. The water in the humidifying device 310 is taken from the condensed water discharged from the refrigerating unit, so that the condensed water can be recycled. The water source is automatically supplemented along with the startup of the unit, and manual addition is not needed. The humidifying device 310 is provided with a liquid level sensor in the water storage tank, the liquid level condition of the water storage tank is monitored in real time, a driver is reminded to add water when the liquid level reaches a warning line, the humidifying device 310 is protected to stop when the liquid level is lower than a lowest line, and the humidifying device is automatically restarted when the liquid level reaches a certain height. The control device 200 has a temperature memory function, can record the temperature in the carriage within a period of time before shutdown, and prevents the blockage of a condensed water inlet of the next startup due to the low-temperature freezing of a humidifier water tank when the unit is shutdown.
The cold chain transportation control device comprises a humidity detection device 110, a humidification device 310, a control device 200, a temperature detection device 120 and a heating device 320, wherein the humidity detection device 110, the humidification device 310, the temperature detection device 120 and the heating device 320 are all connected with the control device 200, the humidity detection device 110 is used for detecting the ambient humidity in the cold chain transportation box and sending the ambient humidity to the control device 200, the temperature detection device 120 is used for detecting the temperature in the cold chain transportation box and sending the ambient humidity to the control device 200, the control device 200 is used for controlling the humidification device 310 to humidify the cold chain transportation box when the ambient humidity is smaller than a preset humidity threshold value, so as to avoid the influence of the excessively low humidity in the cold chain transportation box on the quality of articles, the control device 200 is also used for controlling the heating device 320 to heat the humidification device 310 when the temperature in the cold chain transportation box is smaller than the preset temperature threshold value, so as to prevent the humidification device 310 from being incapable of working due to freezing caused by excessively low temperature, the environmental humidity in the cold chain transportation box is maintained in a proper range, the quality of articles stored in the box is improved, and the use reliability of cold chain transportation is improved.
In one embodiment, a cold chain transport refrigeration unit is provided that includes an evaporator and a cold chain transport control device as described above.
The cold chain transportation refrigerating unit comprises a humidity detection device 110, a humidification device 310, a control device 200, a temperature detection device 120 and a heating device 320, wherein the humidity detection device 110, the humidification device 310, the temperature detection device 120 and the heating device 320 are all connected with the control device 200, the humidity detection device 110 is used for detecting the ambient humidity in the cold chain transportation box and sending the ambient humidity to the control device 200, the temperature detection device 120 is used for detecting the temperature in the cold chain transportation box and sending the ambient humidity to the control device 200, the control device 200 is used for controlling the humidification device 310 to humidify the cold chain transportation box when the ambient humidity is smaller than a preset humidity threshold value, so as to avoid the influence of the excessively low humidity in the cold chain transportation box on the quality of articles, the control device 200 is also used for controlling the heating device 320 to heat the humidification device 310 when the temperature in the cold chain transportation box is smaller than the preset temperature threshold value, so as to prevent the humidification device 310 from being incapable of working due to freezing caused by excessively low temperature, the environmental humidity in the cold chain transportation box is maintained in a proper range, the quality of articles stored in the box is improved, and the use reliability of cold chain transportation is improved.
In one embodiment, a vehicle is provided, see fig. 6, comprising a cold chain transport box and a refrigeration unit as described above. Vehicles include, but are not limited to, cars, boats, or airplanes and the like.
The transportation tool comprises a humidity detection device 110, a humidification device 310, a control device 200, a temperature detection device 120 and a heating device 320, wherein the humidity detection device 110, the humidification device 310, the temperature detection device 120 and the heating device 320 are all connected with the control device 200, the humidity detection device 110 is used for detecting the ambient humidity in the cold chain transportation box and sending the ambient humidity to the control device 200, the temperature detection device 120 is used for detecting the temperature in the cold chain transportation box and sending the temperature to the control device 200, the control device 200 is used for controlling the humidification device 310 to humidify the cold chain transportation box when the ambient humidity is smaller than a preset humidity threshold value, so as to avoid the influence on the quality of articles due to the excessively low humidity in the cold chain transportation box, the control device 200 is also used for controlling the heating device 320 to heat the humidification device 310 when the temperature in the cold chain transportation box is smaller than the preset temperature threshold value, so as to prevent the humidification device 310 from being incapable of working due to freezing caused by excessively low temperature, the environmental humidity in the cold chain transportation box is maintained in a proper range, the quality of articles stored in the box is improved, and the use reliability of cold chain transportation is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A cold chain transportation control device is characterized by comprising a humidity detection device, a humidification device, a control device, a temperature detection device and a heating device, wherein the humidity detection device, the humidification device, the temperature detection device and the heating device are all connected with the control device;
the temperature detection device is used for detecting the temperature in the cold chain transport box and sending the temperature to the control device, the control device is used for controlling the humidifying device to humidify the cold chain transport box when the ambient temperature is smaller than a preset temperature threshold value, and the heating device is also used for controlling the heating device to heat the humidifying device when the temperature in the cold chain transport box is smaller than the preset temperature threshold value; when the temperature in the cold chain transport box body is smaller than a preset temperature threshold value, the control device controls the heating device to heat the humidifying device according to a preset time interval;
the humidifying device comprises a water tank and a steam generating device, the water tank and the control device are both connected with the steam generating device, and the water tank is also used for being connected with an evaporator of a refrigerating unit;
the evaporator is an inclined evaporator, the inclined evaporator and the chassis form an oblique angle, a concave aluminum alloy water receiving tank is fixed on the lower side of the inclined evaporator and is responsible for collecting condensed water, and the water tank is connected with the water receiving tank through a hose and serves as a water inlet of the water tank;
and if the condensed water amount of the evaporator is larger than the evaporation speed of the humidifying device or the humidifying device stops working, the capacity of the water tank is over-full, and the water exceeding the capacity of the water tank is discharged through a water outlet.
2. The cold chain transportation control device of claim 1, wherein the heating device is a self-limiting temperature heat tracing band disposed in a water tank of the humidifying device.
3. The cold chain transportation control device of claim 2, wherein a plurality of the self-temperature-limiting heat tracing bands are connected in series by a hook, and a spring is provided between the plurality of the self-temperature-limiting heat tracing bands.
4. The cold chain transportation control device of claim 1, further comprising a humidity value acquisition device connected to the control device.
5. The cold-chain transportation control device according to claim 4, wherein the humidity value obtaining device is an object type obtaining device, the object type obtaining device is configured to identify an object type in the cold-chain transportation box to obtain type information and send the type information to the control device, and the control device is configured to match a corresponding humidity value according to the type information to serve as the preset humidity threshold value.
6. The cold-chain transportation control device of claim 4, wherein the humidity value obtaining device is an input device for transmitting a received user command to the control device, and the control device is configured to obtain a humidity value as the preset humidity threshold according to the user command.
7. The cold chain transport control device of claim 1, further comprising a level sensor disposed within the water tank, the level sensor being connected to the control device.
8. The cold chain transportation control device of claim 1, wherein the control device is further configured to preserve the temperature within the cold chain transportation box when the humidification device is turned off.
9. A cold chain transport refrigeration unit comprising an evaporator and a cold chain transport control apparatus as claimed in any one of claims 1 to 8.
10. A vehicle comprising a cold chain transport box and a cold chain transport refrigeration unit as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901330.3A CN112060855B (en) | 2020-09-01 | 2020-09-01 | Cold chain transportation control device, refrigerating unit and transport tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010901330.3A CN112060855B (en) | 2020-09-01 | 2020-09-01 | Cold chain transportation control device, refrigerating unit and transport tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112060855A CN112060855A (en) | 2020-12-11 |
| CN112060855B true CN112060855B (en) | 2022-04-08 |
Family
ID=73665061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010901330.3A Active CN112060855B (en) | 2020-09-01 | 2020-09-01 | Cold chain transportation control device, refrigerating unit and transport tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112060855B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203615574U (en) * | 2013-12-20 | 2014-05-28 | 北京昌日新能源科技有限公司 | Electronic water heater |
| CN107270649A (en) * | 2017-06-16 | 2017-10-20 | 合肥美的智能科技有限公司 | Control method, control system and refrigerator, the computer installation of refrigerator |
| CN107763936A (en) * | 2017-11-20 | 2018-03-06 | Tcl家用电器（合肥）有限公司 | Wind cooling refrigerator and its evaporator defrosting method |
| CN207942968U (en) * | 2018-02-12 | 2018-10-09 | 合肥瑞鹏汽车零部件有限公司 | A kind of refrigerator car unit water-tight device |
| CN109398979A (en) * | 2018-10-19 | 2019-03-01 | 珠海格力电器股份有限公司 | Humidity control system and method |
| CN109959119A (en) * | 2019-03-31 | 2019-07-02 | 广东美的制冷设备有限公司 | Antifreeze control method, freezing protection control device, air conditioner and storage medium |
| CN110779269A (en) * | 2019-10-28 | 2020-02-11 | 珠海格力电器股份有限公司 | Temperature and humidity control method and device and air cooler |
| CN211261446U (en) * | 2019-12-17 | 2020-08-14 | 深圳市英维克科技股份有限公司 | Insulation can, refrigerating unit and refrigerator car |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT395933B (en) * | 1986-02-17 | 1993-04-26 | Welz Franz Transporte | METHOD FOR ADJUSTMENT OR MAINTENANCE OF A REFRIGERATED ATMOSPHERES IN A REFRIGERATED TANK AND REFRIGERATED TANK FOR CARRYING OUT THE PROCEDURE |
| KR20010019970A (en) * | 1999-08-31 | 2001-03-15 | 황한규 | Heating and cooling apparatus for vehicle with humidifier |
| EP1516761A1 (en) * | 2003-09-22 | 2005-03-23 | catem GmbH & Co.KG | Electric heating device with integrated temperature sensor |
| CN104812621B (en) * | 2012-10-01 | 2017-05-03 | 冷王公司 | Methods and systems for starting electrically controlled engine of transport refrigeration system |
| US20160107561A1 (en) * | 2014-10-20 | 2016-04-21 | Mustafa Serdar Senaydin | Storage racking system for cold chain logistics |
| CN104972868A (en) * | 2015-07-13 | 2015-10-14 | 沈颖 | Control system of cold chain carrier vehicle |
| CN207207690U (en) * | 2017-09-01 | 2018-04-10 | 山东华盛强移动制冷技术有限公司 | A kind of cold chain transportation unit of integrated battery heat management system |
| US12011022B2 (en) * | 2018-06-21 | 2024-06-18 | Cfa Properties, Inc. | Food transportation and humidity control elements |
| CN110774870A (en) * | 2019-10-22 | 2020-02-11 | 东风汽车有限公司 | Automobile air conditioner humidifying system, control method and electronic equipment |
| CN110978959B (en) * | 2019-12-23 | 2024-03-19 | 珠海格力电器股份有限公司 | Air-conditioning refrigerator car with energy consumption reducing effect and control method |
-
2020
- 2020-09-01 CN CN202010901330.3A patent/CN112060855B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203615574U (en) * | 2013-12-20 | 2014-05-28 | 北京昌日新能源科技有限公司 | Electronic water heater |
| CN107270649A (en) * | 2017-06-16 | 2017-10-20 | 合肥美的智能科技有限公司 | Control method, control system and refrigerator, the computer installation of refrigerator |
| CN107763936A (en) * | 2017-11-20 | 2018-03-06 | Tcl家用电器（合肥）有限公司 | Wind cooling refrigerator and its evaporator defrosting method |
| CN207942968U (en) * | 2018-02-12 | 2018-10-09 | 合肥瑞鹏汽车零部件有限公司 | A kind of refrigerator car unit water-tight device |
| CN109398979A (en) * | 2018-10-19 | 2019-03-01 | 珠海格力电器股份有限公司 | Humidity control system and method |
| CN109959119A (en) * | 2019-03-31 | 2019-07-02 | 广东美的制冷设备有限公司 | Antifreeze control method, freezing protection control device, air conditioner and storage medium |
| CN110779269A (en) * | 2019-10-28 | 2020-02-11 | 珠海格力电器股份有限公司 | Temperature and humidity control method and device and air cooler |
| CN211261446U (en) * | 2019-12-17 | 2020-08-14 | 深圳市英维克科技股份有限公司 | Insulation can, refrigerating unit and refrigerator car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112060855A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104684757B (en) | Periodic system diagnostic of a transport refrigeration system | |
| US11118833B2 (en) | Battery system for refrigerated transport container | |
| US9499027B2 (en) | Operation of transport refrigeration systems to prevent engine stall and overload | |
| CN109416218A (en) | Temporarily cooling battery for transport refrigeration system | |
| WO2017105988A1 (en) | Methods and systems for monitoring power supply for a container | |
| EP3481657B1 (en) | Dual compressor transportation refrigeration unit | |
| US20180274843A1 (en) | Transport container environmental control lid | |
| EP3010754A1 (en) | Hybrid temperature control system and method | |
| CN112060855B (en) | Cold chain transportation control device, refrigerating unit and transport tool | |
| EP3010755A1 (en) | Eutectic device for a transport refrigeration system and methods for cooling and installing the eutectic device | |
| CN216286277U (en) | Self-powered wireless monitoring system for refrigerator | |
| EP4063151B1 (en) | Electrical architecture for powering multiple transport refrigeration units | |
| CN211567776U (en) | End type compressed liquid gas refrigerant refrigerating system device | |
| CN211575583U (en) | Cage type compressed liquid gas refrigerant refrigerating system device | |
| US11912104B2 (en) | Method of defrosting a refrigeration system | |
| CN217532484U (en) | Refrigerator car temperature control device and system | |
| CN108778803B (en) | Return air inlet grille deicing method | |
| JP2655696B2 (en) | Container refrigeration equipment | |
| EP3905161B1 (en) | Data integrity of verification data for a transport climate control system | |
| CN221315727U (en) | Novel refrigerator controller of pure electric refrigerator car | |
| US20240010048A1 (en) | Voltage discharge in refrigeration system | |
| CN215474745U (en) | Cold chain transport vehicle | |
| CN212057910U (en) | Cold-storage medicine freezer carriage and freezer with uniform cooling | |
| US20230278393A1 (en) | Modular architecture for fuel cell powered transport refrigeration | |
| US20230278394A1 (en) | Modules for transport refrigeration system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |