CN209893706U - Tunnel type instant freezer with improved refrigeration effect - Google Patents

Abstract

The utility model belongs to the field of quick freezing equipment, and discloses a tunnel type quick freezer with improved refrigeration effect, which comprises a shell and a conveyer belt arranged in the shell; the shell is connected with a liquid nitrogen input pipe, a nozzle connected with the liquid nitrogen input pipe is arranged in the shell, forced convection equipment facing the conveying belt is arranged in the shell, and the upper space of the shell is divided into a plurality of cavities which are sequentially arranged along the moving direction of the conveying belt through a plurality of partition plates; the cavity is internally provided with the forced convection equipment, and the nozzles are arranged around the forced convection equipment in an annular array mode; and a first air exhaust mechanism for exhausting nitrogen in the shell is arranged at the feed end of the shell. The quick freezer can improve the heat exchange speed of low-temperature nitrogen and food and drug to be quick frozen, and improve the utilization rate of cold energy.

Description

Tunnel type instant freezer with improved refrigeration effect

Technical Field

The utility model relates to a quick-freeze equipment field specifically is a tunnel type frozen machine that refrigeration effect improves.

Background

The quick-freezing equipment can be divided into air quick-freezing equipment, ammonia (liquid ammonia) quick-freezing equipment and nitrogen (liquid nitrogen) quick-freezing equipment from the cold sources, and the liquid nitrogen quick-freezing machine is firstly pushed from the aspects of refrigerating speed and environmental protection.

CN 201510263170.3 discloses a liquid nitrogen instant freezer which can realize the lifting of the upper shell of the instant freezer and is convenient for the cleaning of the interior of the instant freezer. Comprises an upper heat-insulation shell, a lower heat-insulation shell, a base, a mesh belt driving device and a transmission mesh belt; the liquid nitrogen instant freezer also comprises a lifting upright post, a lifting driving system and a vertical limiting device; one end of the lifting upright post is a fixed end, the other end of the lifting upright post is a lifting end, the fixed end is connected with the base, and the lifting end is connected with the upper heat-insulating shell; the conveying mesh belt and the mesh belt driving device are both arranged on a mesh belt support, and the mesh belt support is arranged in the inner cavity of the lower heat-insulation shell in a sliding manner along the vertical direction; the mesh belt bracket is connected with the upper heat-insulation shell through a vertical limiting device; the distance between the mesh belt support and the upper heat insulation shell in the vertical direction is limited through a vertical limiting device, and the lifting upright posts are driven to lift through a lifting driving system. By adopting the instant freezer, thorough cleaning can be realized, the cleaning time is reduced, and the normal production rhythm is ensured.

The main structure of the instant freezer is the structure of the instant freezer which is generally adopted in the market at present.

It can be seen from the description of the patent that a channel with no blocking conduction is arranged in the tunnel, in practical application, if the quick-freezing temperature is to be reduced, the output quantity of liquid nitrogen needs to be increased properly, but the increase of the output quantity of liquid nitrogen inevitably causes the temperature of the pumped nitrogen to be lower overall, and further utilization of cold energy cannot be realized. Based on the above problems, it is desirable to increase the exchange effect between nitrogen and the food and medicine to be processed as much as possible and make full use of the cold energy with only a small increase in the input amount of liquid nitrogen.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tunnel type frozen machine that refrigeration effect improves, this frozen machine can improve the heat exchange rate of low temperature nitrogen gas and the edible and medicinal products of treating the quick-freeze, improves the utilization ratio of cold volume.

In order to achieve the above object, the utility model provides a following technical scheme: a tunnel type instant freezer with improved refrigeration effect comprises a shell and a conveying belt arranged in the shell; the shell is connected with a liquid nitrogen input pipe, a nozzle connected with the liquid nitrogen input pipe is arranged in the shell, forced convection equipment facing the conveying belt is arranged in the shell, and the upper space of the shell is divided into a plurality of cavities which are sequentially arranged along the moving direction of the conveying belt through a plurality of partition plates; the cavity is internally provided with the forced convection equipment, and the nozzles are arranged around the forced convection equipment in an annular array mode; and a first air exhaust mechanism for exhausting nitrogen in the shell is arranged at the feed end of the shell.

In the tunnel type instant freezer with the improved refrigeration effect, the discharge end of the shell is provided with a second air exhaust mechanism for exhausting nitrogen in the shell.

In the tunnel type instant freezer with improved refrigeration effect, the first air exhaust mechanism comprises a first air exhaust cover arranged at the upper part of the feed end of the shell and a first air exhaust pipe connected to the first air exhaust cover, and a first exhaust fan is arranged in the first air exhaust cover; the first air exhaust cover is communicated with the shell;

the second air exhaust mechanism comprises a second air exhaust cover arranged at the upper part of the discharge end of the shell and a second air exhaust pipe connected to the second air exhaust cover, and a second exhaust fan is arranged in the second air exhaust pipe; the second air extraction cover is communicated with the shell.

In the tunnel type instant freezer with improved refrigeration effect, the first air extraction cover is provided with a first flange, and the first air extraction pipe is connected with the first flange; and a second flange is arranged on the second air exhaust cover and is connected with a second air exhaust pipe.

In the tunnel type instant freezer with improved refrigeration effect, a feed inlet is formed in the position, corresponding to the conveying belt, of the feed end of the shell, and a discharge outlet is formed in the position, corresponding to the conveying belt, of the discharge end of the shell;

the feed inlet and the discharge outlet are provided with door curtains; the door curtain comprises the organic glass that the polylith arranged in proper order, organic glass articulate the upper portion at corresponding feed inlet or discharge gate.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses be equipped with the baffle in the casing, separate into a plurality of cavitys through the baffle with the cavity. Set up the shower nozzle around forcing convection current equipment, the class is after a break with the quick gasification of shower nozzle spun liquid nitrogen, and the cavity can inject nitrogen gas between conveyer belt and cavity, contacts nitrogen gas and food medicine as far as, improves the contact effect of nitrogen gas and food medicine, improves heat exchange efficiency, strengthens the utilization ratio of cold volume.

As a further improvement of the scheme, the second air exhaust mechanism is additionally arranged, so that nitrogen can be exhausted from two ends under the condition that nitrogen and food and medicine are contacted as far as possible, and the refrigeration effect can be improved.

Drawings

Fig. 1 is a front view of embodiment 1 of the present invention;

fig. 2 is a left side view of embodiment 1 of the present invention;

fig. 3 is a right side view of embodiment 1 of the present invention;

fig. 4 is a sectional view a-a of fig. 2 according to embodiment 1 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, a tunnel-type instant freezer with improved refrigeration effect comprises a shell 1 and a conveyor belt 2 arranged in the shell 1; the device comprises a shell 1, a liquid nitrogen input pipe 3, a nozzle 4 connected with the liquid nitrogen input pipe 3 and arranged in the shell 1, a forced convection device 5 facing a conveyer belt 2 and generally a fan, wherein the upper space of the shell 1 is divided into a plurality of cavities 7 sequentially arranged along the moving direction of the conveyer belt 2 through a plurality of partition plates 6; the cavity 7 is internally provided with the forced convection equipment 5, and the nozzles 4 are arranged around the forced convection equipment 5 in an annular array manner; and a first air exhaust mechanism 8 for exhausting nitrogen in the shell 1 is arranged at the feeding end of the shell 1.

In practical application, conveyer belt 2 operates, exports the material to the discharge end from the feed end of casing 1, and at this in-process, inputs liquid nitrogen to nozzle 4 through liquid nitrogen input tube 3, and nozzle 4 is around forcing convection current equipment 5 design, and spun liquid nitrogen can gasify rapidly under forcing convection current equipment 5's effect to absorb the heat on the material, refrigerate the material fast. In the conventional apparatus, in order to improve the gasification effect, the height of the space in the casing 1 is generally designed to be higher to improve the gasification effect, but once the height of the space in the casing 1 is higher, it means that more nitrogen gas does not contact with the material, and the cold energy utilization efficiency is low. In the embodiment, the partition plate 6 is adopted to partition the upper part of the space in the shell 1, so that nitrogen is forcibly compressed between the conveying belt 2 and the lower part of the cavity 7 under the condition of not reducing the gasification height, and the heat exchange effect is improved.

In this embodiment, the discharge end of the casing 1 is provided with a second pumping mechanism 9 for pumping away the nitrogen in the casing 1.

Specifically, the first air pumping mechanism 8 comprises a first air pumping hood 81 arranged at the upper part of the feed end of the shell 1 and a first air pumping pipe 82 connected to the first air pumping hood 81, and a first air exhauster 83 is arranged in the first air pumping hood 81; the first air exhaust cover 81 is communicated with the shell 1;

the second air pumping mechanism 9 comprises a second air pumping cover 91 arranged at the upper part of the discharge end of the shell 1 and a second air pumping pipe 92 connected to the second air pumping cover 91, and a second exhaust fan 93 is arranged in the second air pumping pipe 92; the second air exhaust cover 91 is communicated with the shell 1.

This preferred scheme is through setting up first pumping mechanism 8 and second pumping mechanism 9 at the both ends of casing 1 for with the nitrogen gas of the gasification in the casing 1 under the prerequisite of guaranteeing as far as and the material contact, improve nitrogen gas and material contact velocity, improve refrigeration effect.

Meanwhile, the first suction hood 81 is in direct communication with the upper surface of the casing 1, and the second suction hood 91 is in direct communication with the upper surface of the casing 1, in which case there is no concern that the suction position is set too high to cause the nitrogen gas in the upper layer to be sucked away too quickly without sufficient heat exchange because of the above-mentioned presence of the partition plate 6 to eliminate such a concern.

In this embodiment, a first flange 84 is provided on the first suction hood 81, and the first suction pipe 82 is connected to the first flange 84; the second suction hood 91 is provided with a second flange 94, and the second flange 94 is connected with a second suction pipe 92. Through flange and exhaust tube connection, can realize that exhaust tube and casing 1 can dismantle the separation, this is very convenient at the maintenance in-process, as background art said, when casing 1 upper portion rises in order to do benefit to the maintenance, need separate exhaust tube and casing 1. Preferably, at least part of the air inlet ends of the first air exhaust pipe 82 and the second air exhaust pipe 92 are flexible pipes.

In this embodiment, a feed inlet 10 is arranged at a position of the feed end of the shell 1 corresponding to the conveyer belt 2, and a discharge outlet 11 is arranged at a position of the discharge end of the shell 1 corresponding to the conveyer belt 2;

the feeding port 10 and the discharging port 11 are provided with door curtains; the door curtain comprises the organic glass 12 that the polylith arranged in proper order, organic glass 12 articulate the upper portion at corresponding feed inlet 10 or discharge gate 11.

In order to further improve the refrigeration effect and reduce the loss of refrigeration capacity, a door curtain made of a plurality of plate-shaped organic glasses 12 is provided, so that even if the conveying belt 2 is not filled with materials, the door curtain is not lifted wholly, only part of the organic glasses 12 are lifted, and another purpose of adopting the organic glasses 12 is that the door curtain can resist low temperature and high temperature, the traditional operation mode is that a flexible continuous curtain, generally made of polyethylene or polyvinyl chloride, is arranged at the same position, and under the condition of low temperature, particularly under the condition of contacting with water-containing materials such as fish, meat and the like, the tail end of the door curtain can be adhered with a layer of ice, so that the door curtain is not cleaned for a long time, and can be permanently deformed and broken. But adopt flaky organic glass 12, then can effectively avoid this problem to organic glass 12 has the dead weight, even do not have the material on the conveyer belt 2, nitrogen gas also can not blow organic glass 12 open, has similar sealed effect with traditional curtain.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A tunnel type instant freezer with improved refrigeration effect comprises a shell and a conveying belt arranged in the shell; the device is characterized in that the upper space of the shell is divided into a plurality of cavities which are sequentially arranged along the moving direction of the conveyer belt by a plurality of partition plates; the cavity is internally provided with the forced convection equipment, and the nozzles are arranged around the forced convection equipment in an annular array mode; and a first air exhaust mechanism for exhausting nitrogen in the shell is arranged at the feed end of the shell.

2. A tunnel freezer with improved refrigeration as claimed in claim 1, wherein the discharge end of the shell is provided with a second pumping means for pumping nitrogen gas from the shell.

3. The tunnel type instant freezer with improved refrigeration effect as claimed in claim 2, characterized in that the first air extraction mechanism comprises a first air extraction hood arranged at the upper part of the feed end of the shell and a first air extraction pipe connected to the first air extraction hood, and a first air extractor is arranged in the first air extraction hood; the first air exhaust cover is communicated with the shell;

the second air exhaust mechanism comprises a second air exhaust cover arranged at the upper part of the discharge end of the shell and a second air exhaust pipe connected to the second air exhaust cover, and a second exhaust fan is arranged in the second air exhaust pipe; the second air extraction cover is communicated with the shell.

4. The tunnel type instant freezer with improved refrigeration effect as claimed in claim 3, characterized in that the first air extraction hood is provided with a first flange, and the first air extraction pipe is connected with the first flange; and a second flange is arranged on the second air exhaust cover and is connected with a second air exhaust pipe.

5. The tunnel type instant freezer with improved refrigeration effect as claimed in any one of claims 1-4, wherein a feed inlet is arranged at the position of the feed end of the shell corresponding to the conveyer belt, and a discharge outlet is arranged at the position of the discharge end of the shell corresponding to the conveyer belt;

the feed inlet and the discharge outlet are provided with door curtains; the door curtain comprises the organic glass that the polylith arranged in proper order, organic glass articulate the upper portion at corresponding feed inlet or discharge gate.

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