Cold storage double-air-curtain system

Abstract

The utility model discloses a cold storage double-air-curtain system which comprises a circulating fan, an air supply pipeline, an air return pipeline, a temperature monitoring unit, a goods monitoring unit and a control unit, the temperature monitoring unit comprises a cold storage room temperature probe, a return room temperature probe and a pass room temperature probe, and the goods monitoring unit is arranged in a return room. Comprising a first infrared sensor arranged above an inner garage door and a second infrared sensor arranged above an outer garage door. The temperature probe is used for monitoring the temperature of a warehouse-in and warehouse-out area, when heat exchange energy caused by temperature difference exceeds a preset value, the circulating fan is started to supply air to the opening after the warehouse door is opened, and in the warehouse-in and warehouse-out process, the infrared sensor is used for monitoring height and width information of warehouse-in and warehouse-out goods and transmitting the height and width information to the controller; the working number of the air supply outlets and the air supply speed are adjusted according to the height and width of goods, heat exchange between a cage returning room and a refrigerating room and heat exchange between the cage returning room and a penetrating room are reduced to the maximum extent, and the energy utilization efficiency of the refrigeration house is improved.

Description

Technical Field

[0001] The utility model relates to the field of cold storage, in particular to a double air curtain system for a cold storage. Background Art

[0002] Large cold storage facilities often have frequent goods in and out, and the temperature difference between the cold storage room and the cold storage hall is generally more than 20 degrees. To reduce heat exchange between the cold storage room and the cold storage hall during loading and unloading, a heat exchange room is usually set up inside the cold storage. There is a door between the heat exchange room and the cold storage room, and another door between the heat exchange room and the hall. One or more air curtains are installed at each door. When the air curtains are working, they can form an air curtain to block heat exchange between the cold storage room and the outside world. However, the air supply height and air supply angle of existing air curtain systems are not adjustable, and they cannot effectively prevent heat exchange between the cold storage room and the heat exchange room, and between the heat exchange room and the hall. Summary of the Invention

[0003] In view of this, the utility model proposes a cold storage double air curtain system, which can realize flexible adjustment of air supply height and air supply volume, reduce heat exchange, and improve the energy utilization rate of the cold storage room.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The double air curtain system for cold storage described in the utility model comprises a circulating fan, an air supply duct connected to the air supply port of the circulating fan and a return air duct connected to the return air port of the circulating fan, the air supply duct and the return air duct are both arranged in the return cage room, the air supply duct comprises a first air supply duct and a second air supply duct, the first air supply duct has a first air supply port with multiple angle adjustments, the second air supply duct has a second air supply port with multiple angle adjustments; further comprising a temperature monitoring unit, a cargo monitoring unit and a control unit, the temperature monitoring unit comprises a refrigerated room temperature probe, a return cage room temperature probe and a hallway temperature probe, the refrigerated room temperature The temperature signal output ends of the probe, the cage temperature probe and the hall temperature probe are connected to the temperature signal input end of the controller; the cargo detection unit is arranged in the cage, including a first infrared sensor arranged above the inner warehouse door and a second infrared sensor arranged above the outer warehouse door, and the signal output ends of the first infrared sensor and the second infrared sensor are connected to the signal input end of the controller; each of the first air supply outlets corresponds to a first electric valve, and each of the second air supply outlets corresponds to a second electric valve, and the control output end of the controller is respectively connected to the control input ends of the first electric valve, the second electric valve and the circulating fan.

[0006] Compared with the prior art, the utility model discloses utilize temperature probe monitoring the temperature of the warehouse area of exit and entry, when the heat exchange energy caused by temperature difference exceeds the preset value, start circulating fan and send air to the hole after the warehouse door opening, utilize infrared sensor monitoring the height, width information of the goods of warehouse exit and entry in the process and transmission to the controller, the controller can realize the adjustment of the working quantity of the air supply outlet and the air supply wind speed according to the height and width of goods, maximumly reduce the heat exchange between the cage room, refrigeration room and the cage room, corridor, further reduce the loss of refrigeration room cold quantity in the process of warehouse exit and entry, improve the energy utilization efficiency of the cold storage. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the schematic diagram of the utility model.

[0008] Figure 2 It is the circuit principle block diagram of the utility model. DETAILED DESCRIPTION

[0009] The embodiment of the utility model will be described in detail below in combination with the drawings, and the embodiment is implemented under the premise of the technical scheme of the utility model, and detailed implementation mode and specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0010] It should be noted that, in the description of the utility model, the relationship terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between the entities or operations.

[0011] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected" that can appear should be understood broadly, for example, can be fixedly connected, or integrally connected, or mechanically connected, or electrically connected, or directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0012] As Figure 1-2The utility model provides a cold store double air curtain system, including circulating fan 1, with circulating fan 1's air supply outlet connection's air supply pipeline and with circulating fan 1's return air outlet connection's return air pipeline 2, air supply pipeline and return air pipeline 2 all are arranged in the back cage 3, air supply pipeline has first air supply pipe 4 and second air supply pipe 5, first air supply pipe 4 has a plurality of angle adjustment type's first air supply outlet 6, second air supply pipe 5 has a plurality of angle adjustment type's second air supply outlet 7, still include temperature monitoring unit, goods monitoring unit and control unit, temperature monitoring unit includes refrigeration room temperature probe 8, back cage temperature probe 9 and through the hall temperature probe 10, refrigeration room temperature probe 8, back cage temperature probe 9 and through the hall temperature probe 10's temperature signal output end are connected with the temperature signal input end of controller, goods detection unit is arranged in the back cage 3, including being arranged in the first infrared sensor 11 of inner warehouse door top and being arranged in the second infrared sensor 12 of outer warehouse door top, first infrared sensor 11, second infrared sensor 12's signal output end is connected with the signal input end of controller, is used for obtaining the height and width information of goods,

[0013] Every first air supply outlet 6 corresponds a first electric valve 13, and every second air supply 7 corresponds a second electric valve 14, and the control output end of the controller is connected with the control input end of the first electric valve 13, the second electric valve 14 and the circulating fan 1 respectively, and the controller controls the opening and closing of the air supply outlet by controlling the circulating fan and the electric valve.

[0014] In actual installation, the first air supply outlet 6 and the second air supply outlet 7 are all three or more than three from bottom to top, and the warehouse door lifting height and the air supply height can be determined according to the height of the goods, and the air curtain height formed by air supply can be divided into three or more than three grades. Taking three first air supply outlets as an example: when the height of the goods (including the out-of-store goods and the in-store goods) is less than or equal to 1.4 m, the lowermost first air supply outlet is opened; when the height of the goods is between 1.4 m and 1.8 m, the lower two first air supply outlets are opened; when the height of the goods is greater than 1.8 m, all the three first air supply outlets can be opened, so that the air supply height is flexibly controlled, and the energy consumption of the circulating fan is reduced.

[0015] It should be pointed out that the utility model records the warehouse door between the refrigeration room and the back cage 3 as the inner warehouse door, and the first air supply outlet is arranged at the inner warehouse door; the warehouse door between the back cage 3 and the through hall is recorded as the outer warehouse door, and the second air supply outlet is arranged at the outer warehouse door. The working process of the utility model will be described below by taking the out-of-store goods as an example:

[0016] When the goods are out of store, the inner warehouse door is first opened, and the refrigeration room temperature probe 8 and the back cage temperature probe 9 respectively transmit the monitored temperature signals to the controller, and the controller converts the temperature signals into temperature values, and when the temperature difference between the refrigeration room and the back cage 3 reaches the preset value, the circulating fan 1 is started;

[0017] At the same time, the first infrared sensor 11 transmits the acquired cargo information to the controller, which analyzes the cargo information to determine the cargo height and the width of the return cage. The controller then determines the air supply height and air supply speed of the first air supply outlet based on the cargo height and the width of the cargo entering the return cage. The controller also adjusts the direction of the first air supply outlet based on the temperature difference to minimize heat exchange between the return cage and the cold storage room.

[0018] When the first infrared sensor 11 monitors that the goods have completely entered the return cage room 3, the inner door is closed and the outer door is opened. If the temperature difference between the return cage room 3 and the hall reaches the preset value, the circulation fan 1 continues to work. The controller determines the air supply height and air supply speed of the second air supply outlet according to the height and width of the goods, and adjusts the direction of the second air supply outlet according to the temperature difference to minimize the heat exchange between the return cage room and the hall. When the second infrared sensor 12 monitors that the goods have completely entered the hall, the outer door is closed and finally the circulation fan 1 is turned off.

[0019] The utility model uses a temperature probe to monitor the temperature of the entry and exit areas. When the temperature difference exceeds a preset value, the circulating fan is started to supply air to the opening after the warehouse door is opened. During the entry and exit process, the infrared sensor is used to monitor the height and width information of the goods entering and exiting the warehouse and transmit the information to the controller. The controller can adjust the working number of air outlets and the air supply speed according to the height and width of the goods, thereby minimizing the heat exchange between the return cage room and the cold storage room and between the return cage room and the hallway, and reducing the loss of cooling capacity in the cold storage room during the entry and exit process.

[0020] It should be pointed out that the controller of the present invention can be a general-purpose processor, a special-purpose processor, a conventional processor, a digital signal processor (DSP), multiple microprocessors, one or more microprocessors associated with a DSP core, a controller, a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) circuit, any other type of integrated circuit (IC), and a state machine, etc. It can also be a programmable logic controller (i.e., PLC), or an industrial computer with important computer properties and characteristics.

[0021] Finally, it should be emphasized that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments without inventive effort, or replace some of the technical features therein with equivalents. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cold storage double air curtain system, comprising a circulating fan, an air supply duct connected to the air supply outlet of the circulating fan, and a return air duct connected to the return air outlet of the circulating fan, wherein the air supply duct and the return air duct are both arranged in a return air room, the air supply duct comprising a first air supply duct and a second air supply duct, the first air supply duct comprising a plurality of angle-adjustable first air supply outlets, and the second air supply duct comprising a plurality of angle-adjustable second air supply outlets; characterized in that: It also includes a temperature monitoring unit, a cargo monitoring unit and a controller, the temperature monitoring unit includes a cold storage room temperature probe, a cage room temperature probe and a hall temperature probe, the temperature signal output ends of the cold storage room temperature probe, the cage room temperature probe and the hall temperature probe are connected to the temperature signal input end of the controller; the cargo detection unit is arranged in the cage room, including a first infrared sensor arranged above the inner door and a second infrared sensor arranged above the outer door, the signal output ends of the first infrared sensor and the second infrared sensor are connected to the signal input end of the controller; each of the first air supply outlets corresponds to a first electric valve, each of the second air supply outlets corresponds to a second electric valve, and the control output end of the controller is respectively connected to the control input ends of the first electric valve, the second electric valve and the circulating fan.

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