Refrigeration air curtain cabinet with partition temperature control function

Abstract

The utility model discloses a refrigeration air curtain cabinet with a partition temperature control function, and relates to the technical field of cabinet bodies of refrigeration cabinets, a storage chamber is arranged in the cabinet body, and the storage chamber is divided into two partitions through a heat preservation plate; a master control system unit, a temperature acquisition unit and an air supply unit are installed in the cabinet body. The temperatures of different partitions are collected through a temperature collection unit and then transmitted to a controller, and the controller compares the difference value between the set temperature and the existing temperature of each partition and outputs the difference value partition sequence; the controller performs partition sorting according to the difference values, outputs an adjusting signal of the wind direction deflection unit, drives the wind direction deflection unit to deflect towards partitions with large differences, and increases the air outlet amount; the controller obtains the actual temperatures of the partitions according to time periods, outputs the temperature difference of the partitions and continuously adjusts the air supply amount of each air supply pipe for driving air direction deflection, so that the temperatures of the partitions with different temperatures are controlled through the same cold air supply system, the equipment investment is reduced, the equipment size is reduced, and the occupied area is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, and particularly relates to a refrigerated air curtain cabinet with partition temperature control. Background Art

[0002] For the existing refrigerated air curtain cabinet with partition temperature control, its control method generally uses independent refrigeration chambers to provide cold air for different temperature partitions, so as to ensure that the temperatures of each partition are different. This control method increases the equipment investment and the volume of the equipment, thus increasing the floor area. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a refrigerated air curtain cabinet with partition temperature control. By connecting two temperature partitions in parallel to the same cold air supply system, and then adjusting the cold air volume supplied by the cold air supply system to different partitions through a wind direction deflection unit, the temperature control of two partitions with temperature differences is realized, reducing the equipment investment, and at the same time reducing the volume of the equipment, thus reducing the floor area.

[0004] To achieve the above purpose, the utility model provides a refrigerated air curtain cabinet with partition temperature control, which includes a cabinet body. A storage room is arranged in the cabinet body, and the storage room is separated into two partitions by a heat preservation board; a main control system unit, a temperature acquisition unit and a air supply unit are installed in the cabinet body; the main control system unit includes a controller installed in the cabinet body; the temperature acquisition unit includes temperature sensors respectively installed in each partition, and the temperature sensors are signal-connected to the controller; the air supply unit includes a cold air supply system and air supply pipes for supplying air to each partition; two air supply pipes are connected in parallel to the cold air supply system; a wind direction deflection unit is arranged between the cold air supply system and the air supply pipes; the wind direction deflection unit adjusts the cold air volume supplied by the cold air supply system to different air supply pipes; the wind direction deflection unit is signal-connected to the controller.

[0005] After adopting the above structure, the temperatures of different partitions are collected by the temperature acquisition unit and then transmitted to the controller. The controller compares the difference value between the set temperature and the existing temperature of each partition, and outputs the difference value partition sorting; according to the difference value partition sorting, the controller outputs an adjustment signal of the wind direction deflection unit, driving the wind direction deflection unit to deflect towards the partition with a large difference, increasing the air output; the controller obtains the actual temperature of the partition at regular intervals, outputs the partition temperature difference, and continuously adjusts and drives the wind direction deflection unit to adjust the air volume of each air supply pipe, so as to realize the temperature control of different temperature partitions through the same cold air supply system, reducing the equipment investment, reducing the volume of the equipment, and reducing the floor area.

[0006] In order to make full use of the recycled cold air and reduce the energy consumption of the cold air supply system, the cold air supply system includes a refrigeration chamber, an air inlet pipe and an air outlet pipe connected to the refrigeration chamber; a fan is connected between the refrigeration chamber and the air outlet pipe; a return air pipe is provided on each partition, and two return air pipes are connected in parallel to the air inlet pipe.

[0007] In order to achieve the rapid diffusion of cold air and ensure the rapid balance of the temperature within the partition, the air supply pipe is fixed to the top of the cabinet body, and air supply outlets for supplying air to the bottom of the cabinet body are uniformly arranged thereon; the return air pipe is fixed to the bottom of the cabinet body.

[0008] In order to collect the temperature within the partition more accurately, the temperature sensor is installed in the middle of the cabinet body.

[0009] In order to achieve the rapid diversion of cold air, the air direction deflection unit includes a wind guide cavity, an air inlet connected to the cold air supply system and an air outlet connected to two air supply pipes are provided on the wind guide cavity; a wind plate is rotatably installed at the intersection position of the air inlet and the two air outlets within the wind guide cavity, the axis direction of the wind plate is perpendicular to the air inlet direction of the air inlet, the two air outlets are located on both sides of the wind plate, and the wind plate cuts the air flow from the air inlet and guides the air flow into the air outlet on its corresponding side.

[0010] In order to realize the transportation of the diverted cold air and avoid turbulent flow, two wind plates are provided, and the two wind plates are symmetrically arranged on the rotating shaft, wherein one wind plate cuts the air flow from the air inlet; the other wind plate is always in contact with and sealed to the inner wall of the wind guide cavity.

[0011] In order to realize the rotation limit, two limit blocks are provided on the inner wall of the wind guide cavity, and the lower wind plate rotates between the two limit blocks.

[0012] In order to reduce the sealing pressure, four wind plates are provided, and the four wind plates are uniformly arranged on the rotating shaft, wherein one wind plate cuts the air flow from the air inlet, and the remaining three wind plates are all in contact with and sealed to the wind guide cavity.

[0013] In order to realize the diversion of cold air, an arc-shaped diversion surface is provided between two adjacent wind plates.

[0014] In order to facilitate the opening and closing of the door for each partition, an independent opening and closing door is provided at the front side of each partition.

[0015] After adopting the above technical solution, the beneficial effects of the present utility model are:

[0016] The utility model relates to a refrigerated air curtain cabinet with zoned temperature control, which solves the technical problems in the prior art that for the temperatures of different zones, independent refrigeration systems are required, thereby increasing the equipment investment, increasing the volume of the equipment, and increasing the floor area. The utility model collects the temperatures of different zones through a temperature acquisition unit, and then transmits them to a controller. The controller compares the difference values between the set temperature and the existing temperature of each zone, and outputs the zoned sorting of the difference values. The controller outputs an adjustment signal for the wind direction deflection unit according to the zoned sorting of the difference values, driving the wind direction deflection unit to deflect towards the zone with a large difference, increasing the air output. The controller obtains the actual temperature of the zone according to the time period, outputs the temperature difference of the zone, and continuously adjusts the air output of each air supply pipe by driving the wind direction deflection unit, so as to control the temperatures of different zones with different temperatures through the same cold air supply system, reducing the equipment investment, reducing the volume of the equipment, and reducing the floor area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is a schematic structural diagram of a refrigerated air curtain cabinet with zoned temperature control according to the utility model;

[0018] Figure 2 FIG. is a schematic diagram of the principle of a refrigerated air curtain cabinet with zoned temperature control according to the utility model;

[0019] Figure 3 is Figure 1 a schematic structural diagram of the wind direction deflection unit in FIG.;

[0020] Figure 4 FIG. is a schematic diagram of the internal structure of the wind direction deflection unit in Embodiment 1;

[0021] Figure 5 FIG. is a schematic diagram of the internal structure of the wind direction deflection unit in Embodiment 2.

[0022] In the figure, 1. Cabinet body, 11. Storage room, 12. Refrigeration room, 2. Controller, 31. Air supply pipe, 32. Evaporator, 33. Air inlet pipe, 34. Air outlet pipe, 35. Fan, 36. Wind direction deflection unit, 361. Air guide cavity, 362. Air inlet, 363. Air outlet, 364. Air plate, 365. Limit block, 366. Flow guiding surface, 367. Driving motor, 37. Return air pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described below with reference to the accompanying drawings.

[0024] All orientations mentioned in this specification are based on the orientation of a refrigerated air curtain cabinet with zoned temperature control of the present utility model during normal operation, without limiting its orientation during storage and transportation, only representing relative positional relationships, not absolute positional relationships.

[0025] Embodiment 1:

[0026] As Figure 1 and Figure 2 As commonly shown, a refrigerated air curtain cabinet with partition temperature control includes a cabinet body 1, and a storage room 11 is arranged inside the cabinet body 1; the storage room 11 is divided into two partitions by a heat preservation board, and independent switch doors can be arranged at the front side of each partition, so that the partitions can be opened separately. A main control system unit, a temperature acquisition unit and a air supply unit are installed inside the cabinet body 1.

[0027] The main control system unit includes a controller 2 installed inside the cabinet body 1.

[0028] The temperature acquisition unit includes temperature sensors respectively installed in each partition. In order to ensure the measurement accuracy of the temperature sensors, in this embodiment, the temperature sensors are installed in the middle of the cabinet body 1. The temperature sensors are signal-connected to the controller 2.

[0029] The air supply unit includes a cold air supply system and air supply pipes 31 for supplying air to each partition. The two air supply pipes 31 are connected in parallel to the cold air supply system.

[0030] The cold air supply system includes a refrigeration chamber 12, an air inlet pipe 33 and an air outlet pipe 34 connected to the refrigeration chamber 12. The refrigeration chamber 12 can refrigerate the incoming air. An evaporator or a condenser can be arranged inside the refrigeration chamber 12 to refrigerate the passing air, and in this embodiment, the evaporator 32 is preferably used. The structure of the refrigeration chamber 12 has been disclosed in the prior art, and will not be elaborated in this embodiment. A fan 35 is connected between the refrigeration chamber 12 and the air outlet pipe 34; the air flow is sucked from the air inlet pipe 33 into the refrigeration chamber 12 by the fan 35 for refrigeration, and then the cold air is discharged from the air outlet pipe 34.

[0031] The air inlet of the air inlet pipe 33 can communicate with the outside. In this embodiment, in order to realize the recovery of cold air, a return air pipe 37 is arranged on each partition. The two return air pipes 37 are connected in parallel to the air inlet pipe 33, so as to realize the recovery of cold air, reduce the temperature of the incoming air, and thus reduce the pressure in the refrigeration chamber 12. The air outlets of the two air supply pipes 31 are connected in parallel to the air outlet pipe 34.

[0032] In order to realize the uniform air supply to each partition, according to the principle that hot air rises and cold air sinks, the air supply pipes 31 are fixed on the top of the cabinet body 1, and air supply openings for supplying air to the bottom of the cabinet body 1 are uniformly arranged thereon. The return air pipes 37 are fixed at the bottom of the cabinet body 1; in this way, it is beneficial for the cold air to quickly cover the partition after entering the cabinet body 1, so as to accelerate the temperature adjustment.

[0033] A wind direction deflection unit 36 is provided between the air outlet duct 34 and the air supply duct 31, and the wind direction deflection unit 36 is signal-connected to the controller 2. The wind direction deflection unit 36 adjusts the amount of cold air supplied by the cold air supply system to different air supply ducts 31; the wind direction deflection unit 36 can adopt various structures, such as an air outlet with a wind guiding direction or installing a throttle valve in the direction of each air supply duct 31, etc.

[0034] In this embodiment, the wind direction deflection unit 36 includes a wind guiding cavity 361. An air inlet 362 connected to the air outlet duct 34 and an air outlet 363 connected to two air supply ducts 31 are provided on the wind guiding cavity 361; a wind plate 364 is rotatably installed at the intersection position of the air inlet 362 and the two air outlets 363. The axis direction of the wind plate 364 is perpendicular to the air inlet direction of the air inlet 362, and the two air outlets 363 are located on both sides of the wind plate 364; a driving motor 367 for controlling the rotation of the wind plate 364 is provided outside the wind guiding cavity 361. The driving motor 367 is a stepping motor, and the driving motor 367 is signal-connected to the controller 2. By driving the wind plate 364 to rotate through the driving motor 367, the angle of the wind plate 364 is adjusted, so as to cut the cold air entering the wind guiding cavity 361 from the air inlet 362 and guide the air flow into the corresponding air outlet 363 on its side.

[0035] As Figure 4 shown, in this embodiment, two wind plates 364 are provided, and the two wind plates 364 are symmetrically arranged on the rotating shaft. One wind plate 364 cuts the air flow from the air inlet 362; the other wind plate 364 is always in contact with and seals the inner wall of the wind guiding cavity 361.

[0036] By cutting the air flow from the air inlet 362 through one wind plate 364, the air volume entering different air outlets 363 is distributed according to the angle of the wind plate 364; while the other wind plate 364 is always in contact with and seals the inner wall of the wind guiding cavity 361, thus avoiding the disorder of the air flow at the bottom and causing a large impact force on the wind plate 364.

[0037] In order to achieve rotational limit, two limit blocks 365 are provided on the inner wall of the wind guiding cavity 361, and the lower wind plate 364 rotates between the two limit blocks 365, thereby realizing the angle adjustment of the wind plate 364 with the maximum opening and the minimum opening.

[0038] As Figure 1 、 Figure 2 、 Figure 3 and Figure 4 collectively shown, the working principle of a refrigerated air curtain cabinet with zone temperature control:

[0039] The temperature acquisition unit collects the temperatures of different partitions and then transmits them to the controller 2. The controller 2 compares the difference values between the set temperature and the existing temperature of each partition and outputs the sorted difference value partitions. According to the sorted difference value partitions, the controller 2 outputs an adjustment signal for the wind direction deflection unit 36, driving the wind direction deflection unit 36 to deflect towards the partition with a large difference, increasing the air output, so as to realize controlling the temperatures of different temperature partitions through the same cold air supply system and achieve rapid cooling.

[0040] The adjustment method for driving the wind direction deflection unit 36 is that when it is necessary to increase the cold quantity of one of the partitions, the driving motor 367 drives the wind plate 364 to rotate, then the air intake of this air supply pipe 31 increases, while the air intake of the other air supply pipe 31 decreases, so as to realize the rapid cooling of the partition with a large difference value. The controller 2 obtains the actual temperature of the partition according to the time period and outputs the partition temperature difference, so as to continuously adjust the air output of the driving wind direction deflection unit 36 for each air supply pipe 31 and realize the temperature control of different partitions.

[0041] Embodiment 2:

[0042] On the basis of Embodiment 1, this embodiment adds another embodiment:

[0043] As Figure 5 shown, there are four wind plates 364, and the four wind plates 364 are evenly arranged on the rotating shaft. One of the wind plates 364 (the wind plate at the bottom of the air inlet 362) cuts the air flow from the air inlet 362, and the remaining three wind plates 364 are all in contact and sealed with the air guide cavity 361. By setting multiple wind plates 364 in contact and sealed with the air guide cavity 361, the sealing pressure of the wind plates 364 is reduced to avoid sealing failure. The two air outlets 363 are always located on both sides of the wind plate 364 that cuts the air flow, so as to avoid the air flow being unable to enter the corresponding air outlet 363. An arc-shaped flow guide surface 366 is arranged between two adjacent wind plates 364, so as to realize the guidance of the air flow and avoid turbulent flow.

[0044] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essence of the present invention should also belong to the protection scope of the present invention.

Claims

1. A refrigerated air curtain cabinet with zoned temperature control, characterized in that: It comprises a cabinet, wherein a storage room is arranged in the cabinet, and the storage room is divided into two partitions by a heat preservation board; a main control system unit, a temperature collection unit and an air supply unit are installed in the cabinet; The main control system unit includes a controller installed in the cabinet; The temperature acquisition unit includes a temperature sensor installed in each partition, and the temperature sensor signal is connected to the controller; The air supply unit includes a cold air supply system and an air supply pipe for supplying air to each of the partitions; two of the air supply pipes are connected in parallel to the cold air supply system; a wind direction deflection unit is arranged between the cold air supply system and the air supply pipes; the wind direction deflection unit adjusts the amount of cold air supplied by the cold air supply system to different air supply pipes; the wind direction deflection unit signal is connected to the controller.

2. The refrigerated air curtain cabinet with zoned temperature control according to claim 1, characterized in that: The cold air supply system includes a refrigeration chamber, an air inlet duct and an air outlet duct connected to the refrigeration chamber; a fan is connected between the refrigeration chamber and the air outlet duct; a return air duct is provided on each of the partitions, and two return air ducts are connected in parallel to the air inlet duct.

3. The refrigerated air curtain cabinet with zoned temperature control according to claim 2, characterized in that: The air supply pipe is fixed on the top of the cabinet, and is evenly provided with air supply ports for supplying air to the bottom of the cabinet; the return air pipe is fixed on the bottom of the cabinet.

4. The refrigerated air curtain cabinet with zoned temperature control according to claim 3, characterized in that: The temperature sensor is installed in the middle of the cabinet.

5. The refrigerated air curtain cabinet with zoned temperature control according to claim 1, characterized in that: The wind direction deflection unit includes an air guide cavity, on which is provided an air inlet connected to the cold air supply system and an air outlet connected to two air supply pipes; an air plate is rotatably installed in the air guide cavity at the intersection of the air inlet and the two air outlets, and the rotation axis direction of the air plate is perpendicular to the air inlet direction of the air inlet, and the two air outlets are located on both sides of the air plate, and the air plate cuts the airflow from the air inlet and guides the airflow into the air outlet on its corresponding side.

6. The refrigerated air curtain cabinet with zoned temperature control according to claim 5, characterized in that: Two wind plates are provided, and the two wind plates are symmetrically arranged on the rotating shaft, wherein one of the wind plates cuts the airflow from the air inlet; and the other wind plate is always in contact and sealed with the inner wall of the air guide cavity.

7. The refrigerated air curtain cabinet with zoned temperature control according to claim 6, characterized in that: Two limit blocks are arranged on the inner wall of the air guide cavity, and the lower air plate rotates between the two limit blocks.

8. The refrigerated air curtain cabinet with zoned temperature control according to claim 5, characterized in that: There are four wind plates, which are evenly arranged on the rotating shaft, one of which cuts the airflow from the air inlet, and the remaining three wind plates are in contact and sealed with the air guide cavity.

9. The refrigerated air curtain cabinet with zoned temperature control according to claim 8, characterized in that: An arc guide surface is arranged between two adjacent wind plates.

10. The refrigerated air curtain cabinet with zoned temperature control according to claim 1, characterized in that: An independent opening and closing door is arranged on the front side of each partition.

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