CN214842650U - Efficient shell-and-tube heat exchanger for food processing - Google Patents

Abstract

A high-efficiency shell-and-tube heat exchanger for food processing comprises a shell tube, wherein a heat exchange medium leading-out interface is arranged on the shell wall at the right end, and a heat exchange medium leading-in interface is arranged on the shell wall at the left end; the left side of the left end cover is provided with a left end cover material guide port, and the right side of the right end cover is provided with a right end cover material guide port; the tubular circulating reflux heat exchange mechanism comprises a left material guide plate, a right material guide plate and a group of heat exchange tubes, wherein a left material guide plate guide unit is arranged on the left material guide plate, a left end cover material guide port is communicated with the left material guide unit, a right material guide plate guide unit is arranged on the right material guide plate, a right end cover material guide port is communicated with the right material guide unit, the left end of each group of heat exchange tubes is matched with the left material guide unit, the right end of each group of heat exchange tubes is matched with the right material guide unit, and the middle parts of the heat exchange tubes are positioned in a tube shell cavity; and the refrigerating mechanism is connected between the heat exchange medium leading-out interface and the heat exchange medium leading-in interface. The advantages are that: improve the adaptability to food and ensure good circulation effect; the heat exchange effect is improved.

Description

Efficient shell-and-tube heat exchanger for food processing

Technical Field

The utility model belongs to the technical field of food processing equipment, concretely relates to high-efficient shell and tube heat exchanger of food processing usefulness.

Background

As known in the art, the operating principle of the shell-and-tube heat exchanger is to utilize the temperature difference between the media inside and outside the tube to perform the partition heat exchange between the outer wall of the inner tube and the inner wall of the outer tube, so as to achieve the purpose of heat exchange between the two media inside and outside the tube, i.e., to heat or cool one of the media.

Macroscopically, the shell-and-tube heat exchanger is a common device used in the food production industry (but also can be used in the medicine industry or other industries) for heat transfer exchange between gas-liquid, liquid-liquid and the like, such as for raising the temperature of liquid by steam or for lowering the temperature of liquid at high temperature and normal temperature, and also for raising the temperature of liquid at high temperature and normal temperature, and the like.

As is also known in the art, the heat exchange efficiency of plate heat exchangers is relatively high and the heat losses are also relatively small, and thus are not used in the food production industry, and are also found in published chinese patent documents, such as CN2090959U (plate heat exchanger), CN101075314A (plate heat exchanger), CN102165279A (plate heat exchanger), and CN202793137U (plate heat exchanger plates with double corrugations of different depths), and so on. However, the plate heat exchanger has a high viscosity and contains particles for fruit jam such as milk, juice, beverage, ice cream, tomato, etc., so that in practical use at least the following technical problems are exposed: first, since the flow channel gap between the plates of the plate heat exchanger is narrow, when the plate heat exchanger is used for the production of the aforementioned food, which is not limited to the above, the passage (also referred to as "flow") is affected or even blocked; secondly, because the plate heat exchanger usually consists of a plurality of plates with different sizes, the installation sequence of the number seat must be strictly followed in the assembly process, so that once the sequence and/or the position are wrong, the normal use is influenced on one hand, and the disassembly is inconvenient on the other hand; thirdly, as mentioned above, since the gap (space) between the plates is narrow, when the effect after cleaning is required to meet the expected requirement, it cannot be clearly observed by naked eyes, and there is blindness in determining whether the cleaning degree is good or bad, and the flat flow channel is troublesome to clean on one hand, and easy to breed bacteria due to the fact that the residual dead angle of the material cannot be eliminated on the other hand; fourthly, as the plates of the plate heat exchanger are generally sealed by the rubber cushions, the cold and hot media and food slurry are isolated by the rubber cushions, and the cold and hot media and the liquid food slurry can be communicated with each other when the rubber cushions are aged or the plates are not tightly pressed or the pressure of a cold and hot medium flow passage is too high, so that the liquid food slurry is polluted and the food safety is influenced; fifthly, the flow resistance is large, so that the heat exchanger has a critical property on the concentration of the material, namely the heat exchanger is difficult to adapt to the heat exchange of the material with large concentration, particularly the material containing particles.

The shell-and-tube heat exchanger can largely compensate the deficiencies of the plate heat exchanger, and for this, reference is also made to, but not limited to, the following chinese patent documents: CN206371405U (a fresh milk cooling device), CN107744790A (a cooling device for processing dairy products), CN108477299A (a cooling device for the production process of dairy products), CN109373700A (a cooling device for dairy products), and CN212087896U (a cooling device for dairy products).

As still known in the art, the sleeve type heat exchange is a common way for food heat exchange in the food production industry, but the following disadvantages are also exposed in the practical use process: firstly, because the refrigerant liquid enters the sleeve clamp and can not be contacted with all heat exchange tubes (also called as heat exchange tubes, the following is the same), and the gas which absorbs heat and is gasified can not be absorbed by a compressor which is used as a structural system of the refrigeration system immediately, the area of the gas contacted with the heat exchange tubes is limited, a part of liquid is contacted with the surfaces of the heat exchange tubes to absorb heat and be gasified, the gasified refrigerant gas continuously flows forwards (in the outgoing direction), and is repeatedly contacted with the heat exchange tubes to exchange heat in the flowing process, so that the refrigerant is gasified to form superheated steam, and the superheated steam can reduce the refrigeration efficiency of the refrigeration system in the refrigeration process; the more the refrigerant gas which absorbs heat and is gasified continuously flows, the larger the space occupied by the interlayer of the sleeve is, the larger the contact area between the gas and the heat exchange tube is, so that the contact area between the refrigerant liquid and the heat exchange tube is smaller and smaller, and the refrigerant liquid cannot be fully contacted with the heat exchange tube, thereby influencing the heat exchange (namely heat exchange) efficiency; because the distance between the refrigerant inlet and the refrigerant outlet of the double-pipe heat exchanger (i.e., "double-pipe heat exchanger") is long, and because the cross-sectional area of the interlayer space of the double-pipe is small, the evaporation pressure at the refrigerant inlet end is high, the corresponding evaporation temperature is also high, and the high evaporation temperature can reduce the heat exchange efficiency, specifically, because the same evaporation space does not represent the same evaporation temperature, the heat exchange efficiency, i.e., the heat exchange efficiency, can be significantly reduced, and the refrigeration effect is influenced. Typical literature disclosures of the aforementioned double-pipe heat exchanger device can be found in "tubular heat exchanger for food industry" recommended by chinese patent CN203848725U and "double-pipe heat exchanger" provided by CN203100496U, etc.

In view of the above-mentioned prior art, there is a need for reasonable improvements, and the technical solutions described below are made in this context.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a help showing increase and supply the passageway diameter of food circulation and can avoid suffering the particulate matter jam in the food and ensure good circulation effect, be favorable to abandoning to receive the order nature installation factor influence of part and can embody good easy to assemble and dismantle the effect as required, be favorable to conveniently implementing cleanness and conveniently look over the clean situation as required and need not use the part such as sealing rubber packing ring and can ensure the health safety of food, have the material flow in the increase unit interval of being convenient for and can energy saving and improve food production efficiency and help eliminating the factor that influences the heat exchange and showing the refrigeration efficiency that improves refrigerating system and can promote the high-efficient shell and tube heat exchanger of food processing usefulness of heat exchange effect.

The task of the utility model is accomplished in this way, a high-efficiency shell and tube heat exchanger for food processing, which comprises a tube shell, wherein a heat exchange medium leading-out interface communicated with the tube cavity of the tube shell is arranged on the shell wall at the right end of the tube shell, and a heat exchange medium leading-in interface communicated with the tube cavity of the tube shell is arranged on the shell wall at the left end of the tube shell; the left end cover corresponds to the left end of the pipe shell and is provided with a left end cover material leading interface on the left side, and the right end cover corresponds to the right end of the pipe shell and is provided with a right end cover material leading interface on the right side; a tubular circulation reflux heat exchange mechanism, which comprises a left material guide plate, a right material guide plate and a group of heat exchange tubes, wherein the right side surface of the left material guide plate is fixed with the left end surface of the tube shell, a left guide plate guide unit is formed on the left material guide plate, a left end cover material guide port is communicated with the left guide plate guide unit, the left side surface of the right material guide plate is fixed with the right end surface of the tube shell, a right guide plate guide unit is formed on the right material guide plate, a right end cover material guide port is communicated with the right guide plate guide unit, the left ends of the group of heat exchange tubes are matched and communicated with the left guide plate guide unit, the right ends of the group of heat exchange tubes are matched and communicated with the right guide plate guide unit, the middle parts of the group of heat exchange tubes are positioned in the tube shell cavity of the tube shell, the right side surface of the left end cover is matched and fixed with the left side surface of the left material guide plate, the left side surface of the right end cover is matched with and fixed with the right side surface of the right material guide plate; and the refrigerating mechanism is connected between the heat exchange medium leading-out interface and the heat exchange medium leading-in interface.

In a specific embodiment of the present invention, the cooling medium outlet port and the cooling medium inlet port are in a diagonally disposed positional relationship with each other.

In another specific embodiment of the present invention, the left guide guiding unit includes a left guide first guiding cavity i, a left guide second guiding cavity ii, a left guide third guiding cavity iii and a left guide fourth guiding cavity iv, the right guide guiding unit includes a right guide first guiding cavity i, a right guide second guiding cavity ii, a right guide third guiding cavity iii and a right guide fourth guiding cavity iv, the left end cap material guiding port corresponds to and communicates with the left guide first guiding cavity i, and the right end cap material guiding port corresponds to and communicates with the right guide fourth guiding cavity iv; the left ends of the group of heat exchange tubes are respectively matched and communicated with the first guide cavity I of the left guide plate, the second guide cavity II of the left guide plate, the third guide cavity III of the left guide plate and the fourth guide cavity IV of the left guide plate, and the right ends of the group of heat exchange tubes are respectively matched and communicated with the first guide cavity I of the right guide plate, the second guide cavity II of the right guide plate, the third guide cavity III of the right guide plate and the fourth guide cavity IV of the right guide plate.

In another specific embodiment of the present invention, the right side surface of the left material guide plate is welded to the left end surface of the tube shell, and the left side surface of the right material guide plate is welded to the right end surface of the tube shell; the left end cover and the left material guide plate are matched and fixed through a fastener or a hinge device; the right end cover and the right material guide plate are matched and fixed through a fastener or are matched and fixed through a hinge device.

In another specific embodiment of the present invention, when the left end cover is fixed to the left material guide plate by a fastening member, left end cover screw holes are formed at intervals on the left end cover and at the edge portion of the left end cover, and left end cover fixing screws are disposed on the left end cover screw holes, left guide plate screw holes are formed at the edge portion of the left material guide plate and at positions corresponding to the left end cover screw holes, and the left end cover fixing screws are screwed into the left guide plate screw holes; when the right end cover is matched and fixed with the right material guide plate through a fastening piece, right end cover screw holes are formed in the right end cover at intervals and are positioned at the edge part of the right end cover, right end cover fixing screws are matched and arranged on the right end cover screw holes, right guide plate screw holes are formed in the edge part of the right material guide plate and in positions corresponding to the right end cover screw holes, and the right end cover fixing screws are screwed into the right guide plate screw holes.

In still another specific embodiment of the present invention, the left ends of the set of heat exchange tubes respectively extend into and are fixed to the first guide cavity i of the left guide plate, the second guide cavity ii of the left guide plate, the third guide cavity iii of the left guide plate and the fourth guide cavity iv of the left guide plate, and the right ends of the set of heat exchange tubes respectively extend into and are fixed to the first guide cavity i of the right guide plate, the second guide cavity ii of the right guide plate, the third guide cavity iii of the right guide plate and the fourth guide cavity iv of the right guide plate.

In a more specific embodiment of the present invention, the left guide screw hole and the right guide screw hole are blind holes.

In yet another specific embodiment of the present invention, the number of the group of heat exchange tubes is nine, in the nine heat exchange tubes, the left ends of two heat exchange tubes respectively extend into the left guide plate second guide cavity ii, the left guide plate third guide cavity iii and the left guide plate fourth guide cavity iv and are welded and fixed, and the left ends of three heat exchange tubes extend into the left guide plate first guide cavity i and are welded and fixed; and the right ends of the three heat exchange tubes extend into the fourth guide cavity IV of the right guide plate and are welded and fixed.

In a more specific embodiment of the present invention, the first material guiding cavity i of the left guide plate and the fourth material guiding cavity iv of the right guide plate have the same shape and size and are both in a transverse oval shape; the shape and size of the second guide cavity II of the left guide plate, the third guide cavity III of the left guide plate, the fourth guide cavity IV of the left guide plate, the first guide cavity I of the right guide plate, the second guide cavity II of the right guide plate and the third guide cavity III of the right guide plate are the same and are both longitudinal ellipses.

In yet another specific embodiment of the present invention, the refrigeration mechanism includes a refrigeration compressor, a condenser, a refrigerant liquid leading-out pipeline, a dry filter, an evaporation gas leading-out pipe and a refrigerant leading-out pipe, one end of the evaporation gas leading-out pipe is connected with the heat exchange medium leading-out interface in a matching manner, the other end of the evaporation gas leading-out pipe is connected with the air inlet of the refrigeration compressor, a refrigeration compressor air outlet pipe is connected between the air outlet of the refrigeration compressor and the air inlet of the condenser, the refrigerant liquid leading-out pipeline is connected between the liquid outlet of the condenser and the dry filter leading-in port of the dry filter, one end of the refrigerant leading-out pipe is connected with the dry filter leading-out port of the dry filter, the other end of the refrigerant leading-out pipe is connected with the heat exchange medium leading-in interface in a matching manner, and a throttle valve and an electromagnetic valve are disposed on the pipeline of the refrigerant leading-out pipe, the solenoid valve is located between the throttle valve and the filter-drier at a location on the refrigerant outlet pipe.

One of the technical effects of the technical proposal provided by the utility model is that the tubular circulation reflux heat exchange mechanism is adopted, thereby obviously increasing the diameter of the channel for food circulation, and the adaptability to food can be enhanced and good circulation effect can be ensured without being blocked by particles in the food; secondly, because the structure, the shape and the size of a group of heat exchange tubes of the structural system of the tubular circulating reflux heat exchange mechanism are the same, the heat exchange mechanism is not restricted by the severe factors of installation, and can be conveniently assembled and quickly detached from the left end cover and the right end cover as required; thirdly, the cleaning condition of a group of heat exchange tubes of the tubular circulating reflux heat exchange mechanism can be clearly observed after the left end cover and the right end cover are removed or opened, which is favorable for avoiding cleaning dead angles and ensuring the safety and sanitation of food; fourthly, the left end and the right end of the group of heat exchange tubes are reasonably matched with the material guide units of the left guide plate and the right guide plate respectively, so that the material flow in unit time can be increased, the energy consumption is saved, and the food production efficiency is improved; and fifthly, because the refrigeration mechanism is connected in series between the heat exchange medium inlet and outlet ports, the tube shell cavity can be in a full liquid state by the refrigerant, all factors influencing heat exchange can be eliminated, the refrigeration efficiency of the refrigeration mechanism can be improved, and the heat exchange effect is improved.

Drawings

Fig. 1 is a structural diagram of a first embodiment of the present invention.

Fig. 2 is a perspective assembly structure view of the tube case, the left and right end caps, and the tubular circulation-return heat exchange mechanism shown in fig. 1.

Fig. 3 is a block diagram of another embodiment of fig. 2.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, any concept of directionality or orientation related to up, down, left, right, front, rear, longitudinal, transverse, etc. is exemplified by the position state of the drawings, and thus it should not be understood as a specific limitation to the technical solution provided by the present invention.

Example 1:

referring to fig. 1 and 2, there is shown a tube shell 1, a heat exchange medium outlet port 12 (also referred to as "heat exchange medium outlet port", hereinafter the same) communicating with a tube shell cavity 11 of the tube shell 1 is provided on a shell wall at a right end of the tube shell 1, and a heat exchange medium inlet port 13 (also referred to as "heat exchange medium inlet port", hereinafter the same) communicating with the tube shell cavity 11 of the tube shell 1 is provided on a shell wall at a left end of the tube shell 1; a left end cover 2 and a right end cover 3 are shown, the left end cover 2 corresponds to the left end of the pipe shell 1 and is provided with a left end cover material leading interface 21 on the left side of the left end cover 2, and the right end cover 3 corresponds to the right end of the pipe shell 1 and is provided with a right end cover material leading interface 31 on the right side of the right end cover 3; a tubular circulating reflux heat exchange mechanism 4 is shown, the tubular circulating reflux heat exchange mechanism 4 comprises a left material guide plate 41, a right material guide plate 42 and a group of heat exchange tubes 43, the right side surface of the left material guide plate 41 is fixed with the left end surface of the tube shell 1, a left guide plate guide unit 411 is formed on the left material guide plate 41, the left end cover material guide port 21 is communicated with the left guide plate guide unit 411, the left side surface of the right material guide plate 42 is fixed with the right end surface of the tube shell 1, a right guide plate guide unit 421 is formed on the right material guide plate 42, the right end cover material guide port 31 is communicated with the right guide plate guide unit 421, the left end of the group of heat exchange tubes 43 is matched and communicated with the left guide plate guide unit 411, the right end is matched and communicated with the right guide plate guide unit 421, the middle part of the group of the heat exchange tubes 43 is positioned in the tube shell cavity 11 of the tube shell 1, the right side surface of the left end cover 2 is matched and fixed with the left side surface of the left material guide plate 41, and the left side surface of the right end cover 3 is matched and fixed with the right side surface of the right material guide plate 42; a refrigeration mechanism 5 is shown, which refrigeration mechanism 5 is connected immediately in series between the aforementioned heat exchange medium outlet port 12 and heat exchange medium inlet port 13.

As shown in fig. 1 and 2, in the shell tube 1, the heat exchange medium lead-out port 12 and the heat exchange medium lead-in port 13 are diagonally disposed.

The left guide plate guiding unit 411 comprises a left guide plate first guiding cavity I4111, a left guide plate second guiding cavity II 4112, a left guide plate third guiding cavity III 4113 and a left guide plate fourth guiding cavity IV 4114, the right guide plate guiding unit 421 comprises a right guide plate first guiding cavity I4211, a right guide plate second guiding cavity II 4212, a right guide plate third guiding cavity III 4213 and a right guide plate fourth guiding cavity IV 4214, the left end cover material guiding port 21 corresponds to and is communicated with the left guide plate first guiding cavity I4111, and the right end cover material guiding port 31 corresponds to and is communicated with the right guide plate fourth guiding cavity IV 4214; the left ends of the group of heat exchange tubes 43 are respectively matched and communicated with a left guide plate first guide cavity I4111, a left guide plate second guide cavity II 4112, a left guide plate third guide cavity III 4113 and a left guide plate fourth guide cavity IV 4114, and the right ends of the group of heat exchange tubes 43 are respectively matched and communicated with a right guide plate first guide cavity I4211, a right guide plate second guide cavity II 4212, a right guide plate third guide cavity III 4213 and a right guide plate fourth guide cavity IV 4214.

In this embodiment, the right side surface of the left material guide 41 is welded to the left end surface of the case 1, and the left side surface of the right material guide 42 is welded to the right end surface of the case 1.

The left end cover 2 and the left material guide plate 41 can be matched and fixed through a fastener or a hinge device; the right end cover 3 and the right material guide plate 42 can be fixed by a fastener or a hinge device.

In the present embodiment, since the left end cover 2 is fixed to the left material guide plate 41 by a fastening member, left end cover screw holes 22 are provided at intervals in the edge portion of the left end cover 2 on the left end cover 2, left end cover fixing screws 221 are provided in the left end cover screw holes 22, left guide plate screw holes 412 are provided in the edge portion of the left material guide plate 41 at positions corresponding to the left end cover screw holes 22, and the left end cover fixing screws 221 are screwed into the left guide plate screw holes 412; similarly, since the right cap 3 is fixed to the right guide plate 42 by a fastening member, right cap screw holes 32 are provided at intervals in the right cap 3 and in the edge portion of the right cap 3, right cap fixing screws 321 are provided in the right cap screw holes 32, right guide plate screw holes 422 are provided in the edge portion of the right guide plate 42 and in positions corresponding to the right cap screw holes 32, and the right cap fixing screws 321 are screwed into the right guide plate screw holes 422.

The applicant needs to state that: when the left end cover 2 and the left material guide plate 41 are fixed in a matched manner by using the hinge device, a hinge can be arranged between the edge part of the left side surface of the left end cover 2 and the edge part, namely the outer side surface, of the left material guide plate 41, locking parts which are mutually locked or buckled are arranged at opposite positions corresponding to the hinge, and the left end cover 2 and the left material guide plate 41 are locked by the buckling parts, so that the left end cover 2 can be conveniently opened. Since the form of the hinge connection between the right end cover 3 and the right material guide plate 42 is the same as that in the previous example, the applicant does not need to describe any further.

The left ends of the group of heat exchange tubes 43 respectively extend into and are fixed to a left guide plate first guide cavity I4111, a left guide plate second guide cavity II 4112, a left guide plate third guide cavity III 4113 and a left guide plate fourth guide cavity IV 4114, and the right ends of the group of heat exchange tubes 43 respectively extend into and are fixed to a right guide plate first guide cavity I4211, a right guide plate second guide cavity II 4212, a right guide plate third guide cavity III 4213 and a right guide plate fourth guide cavity IV 4214.

In this embodiment, the left guide screw hole 412 and the right guide screw hole 422 are blind holes.

In this embodiment, the number of the heat exchanging pipes 43 in the group is nine, in the nine heat exchanging pipes 43, the left ends of two heat exchanging pipes 43 respectively extend into the left guide plate second guiding cavity ii 4112, the left guide plate third guiding cavity iii 4113 and the left guide plate fourth guiding cavity iv 4114 and are welded, and the left ends of three heat exchanging pipes 43 extend into the left guide plate first guiding cavity i 4111 and are welded; among the nine heat exchanging tubes 43, two heat exchanging tubes 43 have right ends inserted into the first guide chamber i 4211, the second guide chamber ii 4212 and the third guide chamber iii 4213 and are fixed by welding, and three heat exchanging tubes 43 have right ends inserted into the fourth guide chamber iv 4214 and are fixed by welding.

Preferably, the first guide plate first guide cavity I4111 and the fourth guide plate fourth guide cavity IV 4214 are identical in shape and size and are in a transverse oval shape; the shapes and the sizes of the left guide plate second guide cavity II 4112, the left guide plate third guide cavity III 4113, the left guide plate fourth guide cavity IV 4114, the right guide plate first guide cavity I4211, the right guide plate second guide cavity II 4212 and the right guide plate third guide cavity III 4213 are the same and are longitudinally elliptic.

Referring to fig. 1 in combination with fig. 2, the refrigeration mechanism 5 includes a refrigeration compressor 51, a condenser 52, a refrigerant liquid outlet pipe 53, a dry filter 54, an evaporation gas outlet pipe 55 and a refrigerant outlet pipe 56, wherein one end of the evaporation gas outlet pipe 55 is coupled to the heat exchange medium outlet port 12, the other end of the evaporation gas outlet pipe 55 is coupled to a refrigeration compressor air inlet 511 of the refrigeration compressor 51, a refrigeration compressor air outlet 5121 is connected between a refrigeration compressor air outlet 512 of the refrigeration compressor 51 and a condenser air inlet 521 of the condenser 52, the refrigerant liquid outlet pipe 53 is connected between a condenser liquid outlet 522 of the condenser 52 and a dry filter inlet 541 of the dry filter 54, one end of the refrigerant outlet pipe 56 is connected to a dry filter outlet 542 of the dry filter 54, and the other end of the refrigerant outlet pipe 56 is coupled to the heat exchange medium inlet port 13, a throttle 561 and an electromagnetic valve 562 are provided in the pipe of the refrigerant outlet pipe 56, and the electromagnetic valve 562 is located between the throttle 561 and the dry filter 54 at a position on the refrigerant outlet pipe 56. Preferably, the condenser 52 may be provided with a circulating cooling water pipe 523. Since the working principle of the entire refrigerating mechanism 5 belongs to the known technology, the applicant does not separately describe the working principle.

As can be seen from the above description, the structure shown in fig. 2 essentially functions as an evaporator. The liquid refrigerant is introduced into the tube-shell cavity 11 of the tube shell 1 from the heat exchange medium introducing interface 13, contacts with the outer wall of the group of heat exchange tubes 43, and submerges the group of heat exchange tubes 43 by the refrigerant, the refrigerant liquid can fully contact with the group of heat exchange tubes 43 to absorb heat and evaporate and gasify, the gasified gas rises to the top space of the tube-shell cavity 11 to be converged, and is introduced from the heat exchange medium introducing interface 12, namely is sucked away by the refrigeration compressor 51, and as the gasified gas does not repeatedly contact with the group of heat exchange tubes 43 to absorb heat, no superheated steam is formed, the refrigeration efficiency is not reduced, namely the ideal refrigeration efficiency is achieved; since the refrigerant collects in the headspace of the shell and the set of heat exchange tubes 3 is submerged below the gas-liquid mixed liquid, the refrigerant liquid is in full contact with the set of heat exchange tubes 43 and the heat exchange efficiency can be significantly improved; because the utility model discloses a be shell and tube structure, therefore the distance between the refrigerant business turn over is shorter relatively, and casing space cross-section increases, and evaporating pressure and evaporating temperature in the tube chamber 11 of whole tube 1 respectively tend to the same, therefore can not influence refrigeration effect.

When the refrigeration mechanism 5 is in operation, the cooling medium exchanges heat (exchanges heat) with the group of heat exchange tubes 43 of the tubular recirculating heat exchanging mechanism 4 as the cooling medium passes through the tube housing chamber 11. Meanwhile, food such as ice cream to be subjected to heat exchange and cooled is introduced from the left end cover material introduction port 21, and is led out from the right end cover material introduction port 31 through the following process, or may be introduced from the right end cover material introduction port 31 and led out from the left end cover material introduction port 21. The process described below is exemplified by the former, but is not limited thereto. The material is introduced from a left end cover material introduction port 21, sequentially enters the left ends of the three heat exchange tubes 43 through a left guide plate first guide cavity I4111, is simultaneously introduced from the right ends of the three heat exchange tubes 43 to the lower parts of a right guide plate first guide cavity I4211, a right guide plate second guide cavity II 4212 and a right guide plate third guide cavity III 4213, is simultaneously introduced into the right ends of the other three heat exchange tubes 43 through the upper parts of the right guide plate first guide cavity I4211, the right guide plate second guide cavity II 4212 and the right guide plate third guide cavity III 4213, is simultaneously introduced into the lower parts of a left guide plate second guide cavity II 4112, a left guide plate third guide cavity III 4113 and a left guide plate fourth guide cavity IV 4114, is then simultaneously introduced into the left ends of the other three heat exchange tubes 43 through the upper parts of the left guide plate second guide cavity II 4112, the left guide plate third guide cavity III 4113 and the left guide plate fourth guide cavity IV 4114, the right guide plate fourth material guiding cavity IV 4214 is simultaneously led into the right guide plate fourth material guiding cavity IV 4214 from the right ends of the other three heat exchange tubes 43, namely the last three heat exchange tubes, and is led out from the right end cover material leading port 31, so that the heat exchange process is completed.

The applicant needs to explain again that: if material is introduced from the right end cap material introduction port 31 and is introduced from the left end cap material introduction port 21, the material flow path is reversed from the foregoing, but does not affect the heat exchange.

If materials such as milk and the like need to be heated, the heat exchange medium leading-out interface 12 and the heat exchange medium leading-in interface 13 respectively change into a heating medium leading-in interface and a heating medium leading-out interface, the refrigeration mechanism 5 correspondingly changes into a heating medium circulating reflux mechanism, and the materials led out from the right end cover material leading-out interface 31 are hot drink materials.

Furthermore, if in order to avoid the utility model discloses, only make the form change and draw interface 21 and right-hand member lid material to draw interface 31 syntropy setting with the left end lid material, on locating left end lid 2 or right-hand member lid 3 promptly, should regard as so not to break away from the utility model discloses a technical connotation scope.

Example 2:

referring to fig. 3, the left guide plate common guide cavity 4115 shown in fig. 3 is substantially formed by combining the left guide plate second guide cavity ii 4112, the left guide plate third guide cavity iii 4113 and the left guide plate fourth guide cavity iv 4114 of embodiment 1, that is, in embodiment 2, the left guide plate common guide cavity 4115 replaces the left guide plate second guide cavity ii 4112, the left guide plate third guide cavity iii 4113 and the left guide plate fourth guide cavity iv 4114 of embodiment 1. In the same way, the right guide plate common guide chamber 4215 shown in fig. 3 is substantially formed by combining the right guide plate first guide chamber i 4211, the right guide plate second guide chamber ii 4212 and the right guide plate third guide chamber iii 4213 of example 1, that is, in example 2, the right guide plate first guide chamber i 4211, the right guide plate second guide chamber ii 4212 and the right guide plate third guide chamber iii 4213 of example 1 are replaced by the right guide plate common guide chamber 4215. The rest is the same as described in example 1.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims (10)

1. A high-efficiency shell-and-tube heat exchanger for food processing is characterized by comprising a shell tube (1), wherein a heat exchange medium leading-out interface (12) communicated with a shell tube cavity (11) of the shell tube (1) is arranged on the shell wall at the right end of the shell tube (1), and a heat exchange medium leading-in interface (13) communicated with the shell tube cavity (11) of the shell tube (1) is arranged on the shell wall at the left end of the shell tube (1); the left end cover (2) corresponds to the left end of the pipe shell (1) and a left end cover material leading port (21) is arranged on the left side of the left end cover (2), and the right end cover (3) corresponds to the right end of the pipe shell (1) and a right end cover material leading port (31) is arranged on the right side of the right end cover (3); a tubular circulation reflux heat exchange mechanism (4), the tubular circulation reflux heat exchange mechanism (4) comprises a left material guide plate (41), a right material guide plate (42) and a group of heat exchange tubes (43), the right side surface of the left material guide plate (41) is fixed with the left end surface of the tube shell (1), a left guide plate guide unit (411) is formed on the left material guide plate (41), the left end cover material guide port (21) is communicated with the left guide plate guide unit (411), the left side surface of the right material guide plate (42) is fixed with the right end surface of the tube shell (1), a right guide plate guide unit (421) is formed on the right material guide plate (42), the right end cover material guide port (31) is communicated with the right guide plate guide unit (421), the left end of the group of heat exchange tubes (43) is matched and communicated with the left guide plate guide unit (411), and the right end is matched and communicated with the right guide plate guide unit (421), the middle parts of the heat exchange tubes (43) are positioned in a tube shell cavity (11) of the tube shell (1), the right side surface of the left end cover (2) is matched and fixed with the left side surface of the left material guide plate (41), and the left side surface of the right end cover (3) is matched and fixed with the right side surface of the right material guide plate (42); and the refrigerating mechanism (5) is connected between the heat exchange medium leading-out interface (12) and the heat exchange medium leading-in interface (13).

2. The high-efficiency shell-and-tube heat exchanger for food processing according to claim 1, characterized in that the heat exchange medium outlet port (12) and the heat exchange medium inlet port (13) are in a diagonally disposed positional relationship with each other.

3. The high-efficiency shell-and-tube heat exchanger for food processing according to claim 1, wherein the left guide guiding unit (411) comprises a left first guide guiding cavity i (4111), a left second guide guiding cavity ii (4112), a left third guide guiding cavity iii (4113) and a left fourth guide guiding cavity iv (4114), the right guide guiding unit (421) comprises a right first guide guiding cavity i (4211), a right second guide guiding cavity ii (4212), a right third guide guiding cavity iii (4213) and a right fourth guide guiding cavity iv (4214), the left end cover material guiding port (21) corresponds to and communicates with the left first guide guiding cavity i (4111), and the right end cover material guiding port (31) corresponds to and communicates with the right fourth guide guiding cavity iv (4214); the left end of a group of heat exchange tubes (43) is respectively matched and communicated with a left guide plate first guide cavity I (4111), a left guide plate second guide cavity II (4112), a left guide plate third guide cavity III (4113) and a left guide plate fourth guide cavity IV (4114), and the right end of a group of heat exchange tubes (43) is respectively matched and communicated with a right guide plate first guide cavity I (4211), a right guide plate second guide cavity II (4212), a right guide plate third guide cavity III (4213) and a right guide plate fourth guide cavity IV (4214).

4. The high-efficiency shell-and-tube heat exchanger for food processing according to claim 3, wherein the right side surface of the left material guide plate (41) is welded and fixed with the left end surface of the tube shell (1), and the left side surface of the right material guide plate (42) is welded and fixed with the right end surface of the tube shell (1); the left end cover (2) is matched and fixed with the left material guide plate (41) through a fastener or a hinge device; the right end cover (3) and the right material guide plate (42) are matched and fixed through a fastener or a hinge device.

5. The high-efficiency shell-and-tube heat exchanger for food processing according to claim 4, wherein when the left end cover (2) is fixed to the left material guide plate (41) by a fastening member, left end cover screw holes (22) are formed in the left end cover (2) at intervals at the edge portion of the left end cover (2), left end cover fixing screws (221) are disposed on the left end cover screw holes (22), left guide plate screw holes (412) are formed in the edge portion of the left material guide plate (41) at positions corresponding to the left end cover screw holes (22), and the left end cover fixing screws (221) are screwed into the left guide plate screw holes (412); when the right end cover (3) is matched and fixed with the right material guide plate (42) through a fastening piece, right end cover screw holes (32) are formed in the right end cover (3) and located at the edge part of the right end cover (3) at intervals, right end cover fixing screws (321) are arranged on the right end cover screw holes (32) in a matched mode, right guide plate screw holes (422) are formed in the edge part of the right material guide plate (42) and corresponding to the right end cover screw holes (32), and the right end cover fixing screws (321) are screwed into the right guide plate screw holes (422).

6. A high efficiency shell and tube heat exchanger for food processing as claimed in claim 3 wherein said group of heat exchange tubes (43) have their left ends extended into and fixed to said first guide cavity i (4111), said second guide cavity ii (4112), said third guide cavity iii (4113) and said fourth guide cavity iv (4114), and have their right ends extended into and fixed to said first guide cavity i (4211), said second guide cavity ii (4212), said third guide cavity iii (4213) and said fourth guide cavity iv (4214).

7. The high efficiency shell and tube heat exchanger for food processing according to claim 5 wherein said left guide plate screw hole (412) and said right guide plate screw hole (422) are blind holes.

8. The high efficiency shell and tube heat exchanger for food processing according to claim 3 or 6 wherein the number of the heat exchanging tubes (43) in a group is nine, and among the nine heat exchanging tubes (43), the left ends of two heat exchanging tubes (43) each extend into and are welded to the second guiding chamber II (4112) of the left guide plate, the third guiding chamber III (4113) of the left guide plate and the fourth guiding chamber IV (4114) of the left guide plate, and the left ends of three heat exchanging tubes (43) extend into and are welded to the first guiding chamber I (4111) of the left guide plate; the right ends of the nine heat exchange tubes (43) respectively extend into the first guide cavity I (4211) of the right guide plate, the second guide cavity II (4212) of the right guide plate and the third guide cavity III (4213) of the right guide plate and are fixedly welded, and the right ends of the three heat exchange tubes (43) extend into the fourth guide cavity IV (4214) of the right guide plate and are fixedly welded.

9. The high-efficiency shell and tube heat exchanger for food processing according to claim 8, wherein the first guide-plate I (4111) and the fourth guide-plate IV (4214) have the same shape and size as each other and are each in the shape and size of a transverse ellipse; the shape and size of the left guide plate second guide cavity II (4112), the left guide plate third guide cavity III (4113), the left guide plate fourth guide cavity IV (4114), the right guide plate first guide cavity I (4211), the right guide plate second guide cavity II (4212) and the right guide plate third guide cavity III (4213) are the same and are longitudinal ellipses.

10. The high-efficiency shell-and-tube heat exchanger for food processing according to claim 1, wherein the refrigeration mechanism (5) comprises a refrigeration compressor (51), a condenser (52), a refrigerant liquid lead-out pipe (53), a drying filter (54), an evaporation gas lead-out pipe (55) and a refrigerant lead-out pipe (56), one end of the evaporation gas lead-out pipe (55) is connected with the heat exchange medium lead-out interface (12), the other end of the evaporation gas lead-out pipe (55) is connected with a refrigeration compressor air inlet (511) of the refrigeration compressor (51), a refrigeration compressor air outlet pipe (5121) is connected between a refrigeration compressor air outlet (512) of the refrigeration compressor (51) and a condenser air inlet (521) of the condenser (52), the refrigerant liquid lead-out pipe (53) is connected between a condenser liquid outlet (522) of the condenser (52) and a drying filter lead-in port (541) of the drying filter (54), one end of the refrigerant outlet pipe (56) is connected with a dry filter outlet (542) of the dry filter (54), the other end of the refrigerant outlet pipe (56) is connected with the heat exchange medium inlet interface (13), a throttle valve (561) and an electromagnetic valve (562) are arranged on a pipeline of the refrigerant outlet pipe (56), and the electromagnetic valve (562) is positioned between the throttle valve (561) and the dry filter (54) on the refrigerant outlet pipe (56).

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