A quick freezer using an arc-shaped hole-type air distribution device

Abstract

The present invention belongs to a quick freezer adopting an arc-shaped hole-type air distribution device. The problems to be solved are: the air outlet adopts a slit-type air distribution plate, and the impact force of the wind blown out is large, causing the surface of the product to be seriously dried, affecting the product quality; and when the product passes through the windless or mixed air area of ​​the slit-type air distribution plate, the freezing process and speed of the product inside become slow and unstable, affecting the freezing efficiency. The key points of the technical solution are: an insulation box and an insulation warehouse door are arranged on the bottom frame, and an inner cavity frame is arranged inside the insulation box. A fan, a heat exchanger, an upper arc-shaped hole-type air distribution device, a lower arc-shaped hole-type air distribution device, an upper air cavity, a lower air cavity and a rounded air duct are arranged on the inner cavity frame to form a cold and heat exchange and air distribution system. It is suitable for the manufacture and use of quick freezers. It has the effect of quickly freezing frozen products.

Description

[0001] Technical field: The present invention belongs to the technical field of quick freezing equipment, and in particular to a quick freezing machine using an arc-shaped hole-type air distribution device.

[0002] Background technology: Existing quick freezers use slit air distribution plates as air outlets, and the wind blown out has a large impact force, causing the product surface to be dried out and seriously wasted, affecting the product appearance quality; in addition, the distance between the slit air outlets of the quick freezer using a slit air distribution plate is a windless or mixed wind area, and this area occupies more than 2 / 3 of the total length of the quick freezer, so that when the product passes through this area, the process and speed of the internal freezing of the product becomes slow and unstable, affecting the freezing efficiency.

[0003] Content of the invention: The purpose of the present invention is to propose a quick freezer using an arc-shaped hole-type air distribution device to solve the problems existing in the background technology: the air outlet is a slit-type air distribution plate, the impact force of the wind blown out is large, causing the surface of the product to be seriously dried, affecting the product quality; and when the product passes through the windless or mixed air area of ​​the slit-type air distribution plate, the freezing process and speed of the product inside become slow and unstable, affecting the freezing efficiency. The technical solution adopted to solve this technical problem is: a quick freezer using an arc-shaped hole-type air distribution device, characterized in that an insulation box and an insulation warehouse door are arranged on the bottom frame, a feeding transmission mechanism and a discharging transmission mechanism are arranged at both ends of the insulation box, and the transmission shaft drives the conveyor belt to run to form a conveying rotating loop, and a buffer compartment is arranged at the discharging end and / or the feeding end of the insulation box to prevent the air from communicating with the inside and outside, and an inner cavity frame is arranged inside the insulation box, and a fan is arranged inside the inner cavity frame. An upper air cavity and a lower air cavity are provided, and an air duct is provided between the upper air cavity and the lower air cavity for conducting air through the lower arc-shaped hole-type air distribution device. An upper arc-shaped hole-type air distribution device and a lower arc-shaped hole-type air distribution device are provided respectively in the upper air cavity and the lower air cavity, and a conveyor belt is provided between the upper arc-shaped hole-type air distribution device and the lower arc-shaped hole-type air distribution device. A heat exchanger is provided on the upper part of the inner cavity frame, and the heat exchanger, the fan, the upper arc-shaped hole-type air distribution device, the lower arc-shaped hole-type air distribution device, the upper air cavity, the lower air cavity and the air duct are all placed in the heat preservation box. Among them, the structure of the upper arc-shaped hole-type air distribution device and the lower arc-shaped hole-type air distribution device is as follows: a support plate that can be supported on the frame is provided at the left and right ends, and a plurality of arc-shaped grooves and a plurality of bidirectional inclined air inlet and air collection grooves are arranged at intervals between the support plates at the left and right ends, and a vortex return air guide groove is formed in the concave part between the adjacent arc-shaped grooves and the bidirectional inclined air inlet and air collection grooves, and a plurality of through holes for ejecting air are provided on the end faces of the plurality of bidirectional inclined air inlet and air collection grooves. The air duct is a rounded corner air duct. The plurality of air ejection holes arranged on the bidirectionally inclined air inlet and air collecting slot are arranged in a multi-row array, and the top surface of the holes of the bidirectionally inclined air inlet and air collecting slot is arc-shaped.

[0004] Compared with the background technology, the beneficial effect of the present invention is as follows: due to the adoption of the above technical scheme, the cold air exchanged by the heat exchanger on the upper part of the frame is operated at high speed by the fan, so that a high-speed airflow is formed in the wind cavity, and the upper wind cavity is directly conducted to the upper arc-shaped hole-type air distribution device, and the lower arc-shaped hole-type air distribution device is transmitted by the high-speed airflow of the upper wind cavity through the air duct, and reaches the lower wind cavity and is conducted to the lower arc-shaped hole-type air distribution device, and then the high-speed cold airflow is conducted into the upper arc-shaped hole-type air distribution device and the lower arc-shaped hole-type air distribution device at the upper and lower positions of the conveyor belt, and the high-pressure air passing through the upper arc-shaped hole-type air distribution device and the lower arc-shaped hole-type air distribution device is drained through the arc surface groove of the arc-shaped hole-type air distribution device and enters the closing of the two-way inclined air inlet collecting groove for acceleration, and the through-hole throttling on the end face of the air inlet collecting groove forms a jet airflow, which is continuously and vertically sprayed toward the objects on the conveyor belt of the quick-freezing machine, utilizing the Coanda effect (Coanda effect) Effect), so that the air velocity of the airflow through the air distribution device increases, and after the spraying, a uniform 360° airflow ring is formed on the surface of the object. As the food is transported by the conveyor belt, the upper arc hole air distribution device and the lower arc hole air distribution device at the upper and lower positions of the conveyor belt continuously spray out cold airflow, continuously and vertically exchange cold and heat for the frozen products, so as to form a blowing freezing effect. The sprayed airflow flows back to the heat exchanger from the vortex return air guide groove of the upper arc hole air distribution device and the lower arc hole air distribution device and the gap between them, and is re-cooled by the heat exchanger. Since the effective spraying area of ​​the through hole on the end face of the air distribution device has increased by more than 2 times compared with the effective spraying area of ​​the slit air distribution plate, the effective quick freezing heat exchange distance is increased, and the quick freezing time is shortened by 10%-30%; and the wind sprayed through the hole throttling is softer than the wind of the slit air distribution plate, so the surface drying of the items is reduced, the dry loss is reduced, and the product quality is improved.

[0005] Description of the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention. Figure 2 yes Figure 1 A-A section view. Figure 3 It is a schematic structural diagram of the arc-shaped hole type air distribution device in the present invention. Figure 4 yes Figure 3 B-B section view. DETAILED DESCRIPTION

[0006] Example: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4A quick freezer using an arc-shaped hole-type air distribution device, characterized in that a heat preservation box 8 and a heat preservation warehouse door 7 are arranged on a bottom frame 9, a feeding transmission mechanism 1 and a discharging transmission mechanism 10 are arranged at both ends of the heat preservation box 8, and its transmission shaft drives a conveyor belt 6 to run to form a conveying rotation loop, and a buffer compartment 2 is arranged at the discharging end and / or the feeding end in the heat preservation box 8 to block the inside and outside air from communicating, an inner cavity frame 14 is arranged inside the heat preservation box 8, a fan 11 is arranged inside the inner cavity frame 14, an upper air cavity 12 and a lower air cavity 13 are arranged inside the inner cavity frame 14, an air duct 5 for conducting air through the lower arc-shaped hole-type air distribution device 4 is arranged between the upper air cavity 12 and the lower air cavity 13, an upper arc-shaped hole-type air distribution device 3 and a lower arc-shaped hole-type air distribution device 4 are arranged respectively in the upper air cavity 12 and the lower air cavity 13, a conveyor belt 6 is arranged between the upper arc-shaped hole-type air distribution device 3 and the lower arc-shaped hole-type air distribution device 4, and a conveyor belt 6 is arranged at the upper part of the inner cavity frame 14. The heat exchanger 15, the heat exchanger 15, the fan 11, the upper arc-shaped hole-type air distribution device 3, the lower arc-shaped hole-type air distribution device 4, the upper air cavity 12, the lower air cavity 13 and the air duct 5 are all placed in the heat preservation box 8; the structure of the upper arc-shaped hole-type air distribution device 3 and the lower arc-shaped hole-type air distribution device 4 is: a support plate 16 that can be supported on the frame is arranged at the left and right ends, and a plurality of arc surface grooves 17 and a plurality of bidirectional inclined air inlet and air collecting grooves 18 are arranged at intervals between the support plates 16 at the left and right ends, and the recessed parts between adjacent arc surface grooves 17 and the bidirectional inclined air inlet and air collecting grooves 18 form eddy return air guide grooves 20, and a plurality of through holes 19 for ejecting air are arranged on the end surfaces of the plurality of bidirectional inclined air inlet and air collecting grooves 18; the air duct 5 is a rounded corner turning air duct; the plurality of air ejection through holes 19 arranged on the bidirectional inclined air inlet and air collecting grooves 18 are arranged in a multi-row array, and the top surface of the hole arrangement of the bidirectional inclined air inlet and air collecting grooves 18 is arc-shaped.

[0007] When the quick-freezing machine is running, the heat exchange part in the quick-freezing chamber converts the circulating air in the quick-freezing chamber into low-temperature cold air through the heat exchanger 15, and then the fan 11 of the inner cavity frame 14 runs at high speed to form a high-speed air flow. Subsequently, the high-speed cold air flows through the upper air chamber 12, the lower air chamber 13 and the rounded air duct 5 and enters the upper arc-shaped hole-type air distribution device 3 and the lower arc-shaped hole-type air distribution device 4 at the low top position of the conveyor belt 6, and is accelerated by the arc surface groove 17 and the two-way inclined air inlet and air collection groove 18 of the air distribution device, and passes through the air distribution device. The hole-type throttling injection effect of hole 19 is intensified into a uniform cold air flow, and is continuously and vertically sprayed onto the frozen products on the conveyor belt 6, quickly exchanging heat and cold on the surface of the frozen products being transported, and between the surface of the frozen products and the center of the frozen products. The airflow after the heat exchange is returned from the vortex return air guide groove 5 of the upper arc-shaped hole-type air distribution device 3, the lower arc-shaped hole-type air distribution device 4, and the gap therebetween to the heat exchanger 15 for re-cooling; finally, the frozen frozen products are transmitted out of the insulation box 8, and the delivery packaging and other subsequent processing are completed at the discharging transmission mechanism 10.

[0008] Furthermore, the quick freezer is provided with a plurality of heat exchangers 15 and a plurality of centrifugal fans 11 working simultaneously, thereby greatly improving the cooling efficiency of the quick freezer to meet the needs of different production volumes and frozen products.

[0009] Preferably, the inner cavity frame 14, heat exchanger 15, fan 11, upper arc-shaped hole air distribution device 3, lower arc-shaped hole air distribution device 4, upper air cavity 12, lower air cavity 13 and rounded air duct 5 of the quick freezer constitute a cold and hot exchange and air distribution system, which can be applied to various conveyor belt styles and forms such as the conveyor belt 6, such as stainless steel mesh conveyor belt and stainless steel belt conveyor belt, and meet food safety and hygiene requirements.

[0010] Preferably, the upper arc-shaped hole-type air distribution device 3 and the lower arc-shaped hole-type air distribution device 4 can be manually and quickly freely adjusted in height to meet the freezing requirements of foods of different thicknesses.

Claims

1. A quick freezer using an arc-shaped hole air distribution device, characterized in that An insulation box (8) and an insulation storehouse door (7) are arranged on the bottom frame (9), and a feeding transmission mechanism (1) and a discharging transmission mechanism (10) are arranged at both ends of the insulation box (8), and the transmission shaft drives the conveyor belt (6) to form a conveying rotary loop. A buffer compartment (2) is arranged at the discharging end and / or the feeding end in the insulation box (8) to prevent the air inside and outside from communicating with each other. An inner cavity frame (14) is arranged inside the insulation box (8), and a fan (11) is arranged inside the inner cavity frame (14). An upper air cavity (12) and a lower air cavity (13) are arranged inside the inner cavity frame (14). An air duct (5) for transmitting air from a lower arc-shaped hole-type air distribution device (4) is arranged between the upper air cavity (12) and the lower air cavity (13), and an upper arc-shaped hole-type air distribution device (3) and a lower arc-shaped hole-type air distribution device (4) are arranged respectively in the upper air cavity (12) and the lower air cavity (13). The upper arc-shaped hole-type air distribution device (3) and the lower arc-shaped hole-type air distribution device (4) are arranged in correspondence with each other. A conveyor belt (6) is arranged between the hole-type air distribution devices (4), a heat exchanger (15) is arranged on the upper part of the inner cavity frame (14), and the heat exchanger (15), the fan (11), the upper arc-shaped hole-type air distribution device (3), the lower arc-shaped hole-type air distribution device (4), the upper air cavity (12), the lower air cavity (13) and the air duct (5) are all placed in the heat preservation box (8); the upper arc-shaped hole-type air distribution device (3) and the lower arc-shaped hole-type air distribution device (4) have the following structures: a support plate (16) that can be supported on a frame is arranged at the left and right ends, a plurality of arc surface grooves (17) and a plurality of bidirectional inclined air inlet and air collecting grooves (18) are arranged at intervals between the support plates (16) at the left and right ends, a vortex return air guide groove (20) is formed in the concave part between adjacent arc surface grooves (17) and the bidirectional inclined air inlet and air collecting grooves (18), and a plurality of through holes (19) for ejecting air are arranged on the end surfaces of the plurality of bidirectional inclined air inlet and air collecting grooves (18).

2. A quick freezer using an arc-shaped hole air distribution device according to claim 1, characterized in that The air duct (5) is a rounded corner air duct.

3. A quick freezer using an arc-shaped hole air distribution device according to claim 1 or 2, characterized in that The plurality of air ejection holes (19) provided on the bidirectionally inclined air inlet and air collecting groove (18) are arranged in a multi-row array, and the hole arrangement top surface of the bidirectionally inclined air inlet and air collecting groove (18) is arc-shaped.

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