CN113310250A - Tubular heat exchanger for food production - Google Patents
Tubular heat exchanger for food production Download PDFInfo
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- CN113310250A CN113310250A CN202110604382.9A CN202110604382A CN113310250A CN 113310250 A CN113310250 A CN 113310250A CN 202110604382 A CN202110604382 A CN 202110604382A CN 113310250 A CN113310250 A CN 113310250A
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- Prior art keywords
- end cover
- heat exchange
- right end
- left end
- orifice plate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B1/00—Compression machines, plants or systems with non-reversible cycle
- F25B1/005—Compression machines, plants or systems with non-reversible cycle of the single unit type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/09—Improving heat transfers
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A tubular heat exchanger for food production belongs to the technical field of food processing equipment. The heat exchange device comprises a tube shell, wherein a heat exchange medium leading-out interface is arranged on the wall of the right end shell with a circular cross section, and a heat exchange medium leading-in interface is arranged on the wall of the left end shell; the left side of the left end cover is provided with a first material guide port and a second material guide port, the right side of the left end cover is provided with a left end cover liquid guide cavity, and the left side of the right end cover is provided with a right end cover liquid guide cavity; the middle part of the tubular circulating reflux heat exchange mechanism is positioned in the tube shell cavity, the left end cover is fixed with the left end of the tubular circulating reflux heat exchange mechanism, the first material guide port, the second material guide port and the left end cover liquid guide cavity are communicated with the left end of the tubular circulating reflux heat exchange mechanism, the right end cover is fixed with the right end of the tubular circulating reflux heat exchange mechanism, and the right end cover liquid guide cavity is communicated with the right end of the tubular circulating reflux heat exchange mechanism; and the refrigerating mechanism is connected between the heat exchange medium leading-out interface and the heat exchange medium leading-in interface. Improve the adaptability to food and ensure good circulation effect; the flow resistance is reduced; the heat exchange effect is improved.
Description
Technical Field
The invention belongs to the technical field of food processing equipment, and particularly relates to a tubular heat exchanger for food production.
Background
As known in the art, the working principle of the tubular heat exchanger is to utilize the temperature difference between the media inside and outside the tube to perform partition wall 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 achieve the purpose of heating or cooling one medium.
Macroscopically, the aforementioned shell-and-tube heat exchanger is a common device used in the food production industry (but also used in the pharmaceutical industry or other industries) for heat transfer exchange between gas-liquid, liquid-liquid, and the like, for example, for raising the temperature of a liquid by steam or for lowering the temperature of a high-temperature liquid by a normal-temperature liquid, or for raising the temperature of a high-temperature liquid by a normal-temperature liquid, and the like.
As is also known in the art, the heat exchange efficiency of plate heat exchangers is relatively high and the heat loss is also relatively small, and thus is not used in the food production industry, and is also seen 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, plate heat exchangers for fruit pastes such as milk, juices, drinks, ice cream, tomatoes, etc. are very viscous and contain particles, 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 and the clogging is caused; secondly, because the plate heat exchange device is generally composed of a plurality of plates with different sizes, the mounting sequence of the number-checking seat must be strictly followed in the assembling 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 type heat exchange device are generally sealed by the rubber cushions, the rubber cushions isolate cold and hot media, food slurry and the like, 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 compressed 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.
As is known in the art, the tube type, i.e. shell and tube type heat exchanger can largely compensate for the above mentioned disadvantages of the plate type heat exchanger, and for this, reference is also made to the chinese patent documents which are not limited to the following examples: 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.
Disclosure of Invention
The object of the present invention is to provide a tubular heat exchanger for food production which contributes to a significant increase in the diameter of a passage through which food is circulated, which can prevent clogging with particles in food and ensure a good circulation effect, which is advantageous in that it eliminates the influence of sequential mounting factors of parts to exhibit a good easy-to-mount and easy-to-dismount effect as required, which is advantageous in that it facilitates easy cleaning and no dead angle of cleaning and easy inspection of cleaning conditions as required and which does not require the use of parts such as a sealing rubber gasket to ensure food sanitation and safety, which facilitates reduction in flow resistance and improvement in heat exchange efficiency to save energy and improve food production efficiency, which contributes to elimination of factors affecting heat exchange and significantly improves the refrigeration efficiency of a refrigeration system to improve heat exchange effect.
The task of the invention is accomplished in this way, a tubular heat exchanger for food production comprises a tube shell, the cross section of the tube shell is circular, a heat exchange medium leading-out interface communicated with a tube shell 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 shell 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 first material leading port I and a second material leading port II on the left side, the right side of the left end cover is provided with a left end cover liquid guide cavity, the right end cover corresponds to the right end of the pipe shell and is provided with a right end cover liquid guide cavity on the left side, the diameters of the left end cover and the right end cover are the same as the outer diameter of the pipe shell, and the thickness of the left end cover is equal to that of the right end cover; the left end of the tubular circulating reflux heat exchange mechanism is fixed with the left end face of the tube shell, the right end of the tubular circulating reflux heat exchange mechanism is fixed with the right end face of the tube shell, the middle part of the tubular circulating reflux heat exchange mechanism is positioned in the tube shell cavity, the left end cover is fixed with the left end of the tubular circulating reflux heat exchange mechanism, the first material leading port I, the second material leading port II and the left end cover liquid guide cavity are communicated with the left end of the tubular circulating reflux heat exchange mechanism, the right end cover is fixed with the right end of the tubular circulating reflux heat exchange mechanism, and the right end cover liquid guide cavity is communicated with the right end of the tubular circulating reflux heat exchange mechanism; 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 heat exchange medium outlet port and the heat exchange medium inlet port are diagonally disposed with respect to each other.
In another specific embodiment of the present invention, the tubular recirculating heat exchanging mechanism comprises a left orifice plate, a right orifice plate and a group of heat exchanging pipes, wherein the right side surface of the left orifice plate is fixed with the left end surface of the pipe shell, the left side surface of the right orifice plate is fixed with the right end surface of the pipe shell, the group of heat exchanging pipes are arranged in the pipe shell cavity at intervals, the left ends of the group of heat exchanging pipes are fixed with the left orifice plate at positions corresponding to the heat exchanging pipe matching holes of the left orifice plate arranged on the left orifice plate at intervals, and the right ends of the group of heat exchanging pipes are fixed with the right orifice plate at positions corresponding to the heat exchanging pipe matching holes of the right orifice plate arranged on the right orifice plate at intervals; the left end cover is matched with the left pore plate, the first material leading port I, the second material leading port II and the left end cover liquid guide cavity are communicated with the left pore plate heat exchange pipe matching hole, the right end cover is matched with the right pore plate, and the right end cover liquid guide cavity is communicated with the right pore plate heat exchange pipe matching hole.
In another specific embodiment of the present invention, the right side surface of the left orifice plate is welded and fixed to the left end surface of the tube shell, and the left side surface of the right orifice plate is welded and fixed to the right end surface of the tube shell; the left end cover and the left orifice plate are matched and fixed through a fastener or a hinge device; the right end cover and the right pore plate are matched and fixed through a fastener or a hinge device.
In a further specific embodiment of the present invention, when the left end cover is fixed to the left orifice plate by a fastening member, left end cover screw holes are provided at intervals on the edge portion of the left end cover, and left end cover fixing screws are provided on the left end cover screw holes, left orifice plate screw holes are provided on the edge portion of the left orifice plate and at positions corresponding to the left end cover screw holes, and the left end cover fixing screws are screwed into the left orifice plate screw holes; when the right end cover is matched and fixed with the right hole plate through a fastener, 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 hole plate screw holes are formed in the edge part of the right hole plate and correspond to the right end cover screw holes, and the right end cover fixing screws are screwed into the right hole plate screw holes.
In yet another specific embodiment of the present invention, the left ends of the group of heat exchange tubes extend into the left orifice plate heat exchange tube mating hole of the left orifice plate and are welded and fixed with the left orifice plate heat exchange tube mating hole, and the right ends of the group of heat exchange tubes extend into the right orifice plate heat exchange tube mating hole of the right orifice plate and are welded and fixed with the right orifice plate heat exchange tube mating hole.
In a more specific embodiment of the present invention, the left orifice plate screw hole and the right orifice plate screw hole are blind holes.
In a further specific embodiment of the present invention, when the number of the group of heat exchange tubes is twelve, the number of the left-side heat exchange tube connection holes and the number of the right-side heat exchange tube connection holes are twelve, and the left-side end cover liquid guide chamber includes a left-side end cover first liquid guide cavity i, a left-side end cover second liquid guide cavity ii, a left-side end cover third liquid guide cavity iii, a left-side end cover fourth liquid guide cavity iv and a left-side end cover fifth liquid guide cavity v, wherein each two left-side heat exchange tube connection holes correspond to one left-side end cover liquid guide cavity, and each left-side heat exchange tube connection hole corresponds to the material first introduction port i and the material second introduction port ii; the right end cover liquid guide cavity comprises a right end cover first liquid guide cavity I, a right end cover second liquid guide cavity II, a right end cover third liquid guide cavity III, a right end cover fourth liquid guide cavity IV, a right end cover fifth liquid guide cavity V and a right end cover sixth liquid guide cavity VI, wherein every two right pore plate heat exchange tube matching holes correspond to one right end cover liquid guide cavity.
In a still more specific embodiment of the present invention, the first cavity i to v and the sixth cavity vi are the same in shape and size and are all elliptical.
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, the other end of the evaporation gas leading-out pipe is connected with an air inlet of the refrigeration compressor, an air outlet pipe of the refrigeration compressor is connected between an air outlet of the refrigeration compressor and an air inlet of the condenser, the refrigerant liquid leading-out pipeline is connected between an air outlet of the condenser and an air inlet of the dry filter, one end of the refrigerant leading-out pipe is connected with an air outlet of the dry filter, the other end of the refrigerant leading-out pipe is connected with the heat exchange medium leading-in interface, and a throttle valve and an electromagnetic valve are disposed on a 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 scheme provided by the invention is that the tubular circulating reflux heat exchange mechanism is adopted, so that the diameter of a channel for food circulation is remarkably increased, the channel is not blocked by particles in food, the adaptability to the food is improved, and a good circulation effect is ensured; 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, because the total path of the food during heat exchange is long and the continuity is smooth, the flow resistance can be reduced, the production efficiency can be improved, and the energy consumption can be saved; 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 block diagram of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of fig. 1.
Detailed Description
In order to clearly understand the technical spirit and the advantages of the present invention, the applicant below describes in detail by way of example, but the description of the example is not intended to limit the technical scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in material, should be considered as the technical scope of the present invention.
In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and rear are exemplified by the position state of fig. 1, and thus, it should not be understood as a particular limitation to the technical solution provided by the present invention.
Referring to fig. 1, there is shown a tube shell 1, the cross-sectional shape of the tube shell 1 is circular, and a heat exchange medium outlet port 12 (also referred to as "cooling 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 "cooling 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 tube shell 1 and is provided with a first material leading port I21 and a second material leading port II 22 on the left side of the left end cover 2 preferably through welding, a left end cover liquid guide cavity 23 is formed on the right side of the left end cover 2, the right end cover 3 corresponds to the right end of the tube shell 1 and is formed with a right end cover liquid guide cavity 31 on the left side of the right end cover 3, the diameters of the left end cover 2 and the right end cover 3 are the same as the outer diameter of the tube shell 1, and the thickness of the left end cover 2 is equal to that of the right end cover 3; a tubular circulating reflux heat exchange mechanism 4 is shown, the left end of the tubular circulating reflux heat exchange mechanism 4 is fixed with the left end face of the tube shell 1, the right end is fixed with the right end face of the tube shell 1, the middle part of the tubular circulating reflux heat exchange mechanism 4 is positioned in the tube shell cavity 11, the left end cover 2 is fixed with the left end of the tubular circulating reflux heat exchange mechanism 4, the first material introducing port I21, the second material introducing port II 22 and the left end cover liquid guide cavity 23 are communicated with the left end of the tubular circulating reflux heat exchange mechanism 4, the right end cover 3 is fixed with the right end of the tubular circulating reflux heat exchange mechanism 4, and the right end cover liquid guide cavity 31 is communicated with the right end of the tubular circulating reflux heat exchange mechanism 4; 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.
In the present embodiment, the heat exchange medium outlet port 12 and the heat exchange medium inlet port 13 are diagonally disposed with respect to each other. In the use state, the heat exchange medium outlet port 12 is preferably directed upwards, and the heat exchange medium inlet port 13 is preferably directed downwards.
Referring to fig. 2 in greater detail and in conjunction with fig. 1, the tubular recirculating heat exchanging mechanism 4 includes a left orifice plate 41, a right orifice plate 42, and a group of heat exchanging tubes 43, wherein a right side surface of the left orifice plate 41 is fixed to a left end surface of the shell tube 1, a left side surface of the right orifice plate 42 is fixed to a right end surface of the shell tube 1, a group of heat exchanging tubes 43 is disposed at intervals in the shell tube chamber 11, and left ends of the group of heat exchanging tubes 43 are fixed to the left orifice plate 41 at positions corresponding to a left orifice plate heat exchanging tube fitting hole 411 disposed at intervals in the left orifice plate 41, and right ends of the group of heat exchanging tubes 43 are fixed to the right orifice plate 42 at positions corresponding to a right orifice plate heat exchanging tube fitting hole 421 disposed at intervals in the right orifice plate 42; the left end cover is fitted to the left orifice plate 41, the first material introduction port i 21, the second material introduction port ii 22 and the left end cover liquid guide chamber 23 communicate with the left orifice plate heat exchange tube fitting hole 411, the right end cover 3 is fitted to the right orifice plate 42, and the right end cover liquid guide chamber 31 communicates with the right orifice plate heat exchange tube fitting hole 421.
In this embodiment, the right side surface of the left orifice plate 41 and the left end surface of the tube case 1 are preferably fixed by welding, and the left side surface of the right orifice plate 42 and the right end surface of the tube case 1 are preferably fixed by welding.
The left end cover 2 and the left orifice plate 41 can be matched and fixed through a fastener and can also be matched and fixed through a hinge device; the right end cover 3 and the right orifice plate 42 can be fixed by a fastener and a hinge device.
In the present embodiment, since the left end cover 2 is fixed to the left orifice plate 41 by a fastening member, left end cover screw holes 24 are formed at intervals in the edge portion of the left end cover 2 which is positioned on the left end cover 2, left end cover fixing screws 241 are disposed in the left end cover screw holes 24, left orifice plate screw holes 412 are formed in the edge portion of the left orifice plate 41 which corresponds to the left end cover screw holes 24, and the left end cover fixing screws 241 are screwed into the left orifice plate screw holes 412; in the same manner, the right cap 3 is fitted and fixed to the right orifice plate 42 by a fastener, right cap screw holes 32 are provided at intervals in the edge portion of the right cap 3 and located on the right cap 3, right cap fixing screws 321 are provided in the right cap screw holes 32, right orifice plate screw holes 422 are provided in the edge portion of the right orifice 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 orifice plate screw holes 422. The structure of the present embodiment can be illustrated by fig. 1 and 2.
The applicant needs to state that: when the left end cap 2 is fixed to the left orifice plate 41 by the hinge device, a hinge may be provided between an edge of the left side surface of the left end cap 2 and an edge, i.e., an outer side surface of the left orifice plate 41, and locking members that lock or snap with each other may be provided at positions opposite to the hinge, and the left end cap 2 and the left orifice plate 41 may be locked by the locking members, so that the left end cap 2 may be conveniently opened. Since the right end cover 3 is hinged to the right orifice plate 42, the connection between the left end cover 2 and the left orifice plate 41 is the same as that described above, and therefore the applicant does not need to describe any further.
Continuing to refer to fig. 1 and 2, in the present embodiment, the left end of the aforementioned group of heat exchange tubes 43 protrudes into the left aperture plate heat exchange tube fitting hole 411 of the aforementioned left aperture plate 41 and is welded and fixed to the left aperture plate heat exchange tube fitting hole 411, and the right end of the group of heat exchange tubes 43 protrudes into the right aperture plate heat exchange tube fitting hole 421 of the aforementioned right aperture plate 42 and is welded and fixed to the right aperture plate heat exchange tube fitting hole 421.
In the present embodiment, the left orifice screw hole 412 and the right orifice screw hole 422 are both blind holes.
As a non-limiting embodiment, the present embodiment exemplifies twelve heat exchange tubes 43 in the aforementioned group, twelve heat exchange tube connection holes 411 in the aforementioned left hole plate and twelve heat exchange tube connection holes 421 in the aforementioned right hole plate, and the aforementioned left end cap liquid guiding chamber 23 comprises a first left end cap liquid guiding cavity i 231, a second left end cap liquid guiding cavity ii 232, a third left end cap liquid guiding cavity iii 233, a fourth left end cap liquid guiding cavity iv 234 and a fifth left end cap liquid guiding cavity v 235, wherein each two of the aforementioned left hole plate heat exchange tube connection holes 411 corresponds to one left end cap liquid guiding cavity, and each one of the left hole plate heat exchange tube connection holes 411 corresponds to the aforementioned first material connection port i 21 and the second material connection port ii 22; the right end cover liquid guide cavity 31 comprises a right end cover first liquid guide concave cavity I311, a right end cover second liquid guide concave cavity II 312, a right end cover third liquid guide concave cavity III 313, a right end cover fourth liquid guide concave cavity IV 314, a right end cover fifth liquid guide concave cavity V315 and a right end cover sixth liquid guide concave cavity VI 316, wherein each two right pore plate heat exchange tube matching holes 421 correspond to one right end cover liquid guide concave cavity.
In this embodiment, the shapes and sizes of the first cavity 231 to the fifth cavity 235 and the first cavity 311 to the sixth cavity 316 are the same and are elliptical. That is, the first liquid guiding recessed cavity I231 of the left end cover, the second liquid guiding recessed cavity II 232 of the left end cover, the third liquid guiding recessed cavity III 233 of the left end cover, the fourth liquid guiding recessed cavity IV 234 of the left end cover, the fifth liquid guiding recessed cavity V235 of the left end cover, the first liquid guiding recessed cavity I311 of the right end cover, the second liquid guiding recessed cavity II 312 of the right end cover, the third liquid guiding recessed cavity III 313 of the right end cover, the fourth liquid guiding recessed cavity IV 314 of the right end cover, the fifth liquid guiding recessed cavity V315 of the right end cover and the sixth liquid guiding recessed cavity VI 316 of the right end cover have the same shape, size and depth and are all elliptical (i.e. elliptical).
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 arranged in the line of the refrigerant outlet pipe 56, and the electromagnetic valve 562 is located between the throttle 531 and the dry filter 54 at the 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 invention adopts the shell-and-tube structure, the distance between the inlet and the outlet of the refrigerant is relatively short, the space section of the shell is enlarged, and the evaporation pressure and the evaporation temperature in the shell-and-tube cavity 11 of the whole shell-and-tube 1 respectively tend to be the same, thereby not influencing the 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, the food to be cooled, such as ice cream, is introduced from the first material leading port I21, and passes through a left hole plate heat exchange tube connection hole 411 on the left hole plate 41 corresponding to the first material leading port I21, a corresponding heat exchange tube in the group of heat exchange tubes 43, a right hole plate heat exchange tube connection hole 421 on the right hole plate 42, a right end cover first liquid guide cavity I311, a right hole plate heat exchange tube connection hole 421, the heat exchange tubes 43, the left hole plate heat exchange tube connection hole 411, the left end cover first liquid guide cavity I231, the left hole plate heat exchange tube connection hole 411, the heat exchange tubes 43, the right hole plate heat exchange tube connection hole 421, the right end cover second liquid guide cavity II 312, the right hole plate heat exchange tube connection hole 421, the heat exchange tubes 43, the left hole plate heat exchange tube connection hole 411 and the left end cover second liquid guide cavity II 232 in sequence in the same way until the heat-exchanged and cooled object is cooled in a single-way and in the same way in the whole process The material passes through a fifth liquid guide cavity V235 of the left end cover and is guided out from a second material guide interface II 22.
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 are respectively changed into a heating medium leading-in interface and a heating medium leading-out interface, the refrigeration mechanism 5 uses a heating medium circulating reflux mechanism instead, and the materials led out from the material second leading-out interface II 22 are hot drink materials.
From the above description, it is fully known that: the first material leading port I21 and the second material leading port II 22 can be respectively arranged on the left end cover 2 and the right end cover 3.
In conclusion, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the invention task and truly realizes the technical effects of the applicant in the technical effect column.
Claims (10)
1. A tube heat exchanger for food production is characterized by comprising a tube shell (1), wherein the cross section of the tube shell (1) is circular, a heat exchange medium leading-out interface (12) communicated with a tube shell cavity (11) of the tube shell (1) is arranged on the shell wall at the right end of the tube shell (1), and a heat exchange medium leading-in interface (13) communicated with the tube shell cavity (11) of the tube shell (1) is arranged on the shell wall at the left end of the tube shell (1); the device comprises a left end cover (2) and a right end cover (3), wherein the left end cover (2) corresponds to the left end of the pipe shell (1) and is provided with a first material leading port I (21) and a second material leading port II (22) on the left side of the left end cover (2), a left end cover liquid guide cavity (23) is formed on the right side of the left end cover (2), the right end cover (3) corresponds to the right end of the pipe shell (1) and is provided with a right end cover liquid guide cavity (31) on the left side of the right end cover (3), the diameters of the left end cover (2) and the right end cover (3) are the same as the outer diameter of the pipe shell (1), and the thickness of the left end cover (2) is equal to that of the right end cover (3); the left end of the tubular circulating reflux heat exchange mechanism (4) is fixed with the end face of the left end of the tube shell (1), the right end of the tubular circulating reflux heat exchange mechanism (4) is fixed with the end face of the right end of the tube shell (1), the middle of the tubular circulating reflux heat exchange mechanism (4) is positioned in the tube shell cavity (11), the left end cover (2) is fixed with the left end of the tubular circulating reflux heat exchange mechanism (4), the first material leading port I (21), the second material leading port II (22) and the left end cover liquid guide cavity (23) are communicated with the left end of the tubular circulating reflux heat exchange mechanism (4), the right end cover (3) is fixed with the right end of the tubular circulating reflux heat exchange mechanism (4), and the right end cover liquid guide cavity (31) is communicated with the right end of the tubular circulating reflux heat exchange mechanism (4); 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 tube heat exchanger for food production according to claim 1, characterized in that the heat exchange medium outlet connection (12) and the heat exchange medium inlet connection (13) are in a diagonally disposed positional relationship with each other.
3. The tubular heat exchanger for food production according to claim 1, wherein the tubular circulating-returning heat exchanging means (4) comprises a left orifice plate (41), a right orifice plate (42), and a group of heat exchanging tubes (43), a right side surface of the left orifice plate (41) is fixed to a left end surface of the shell tube (1), a left side surface of the right orifice plate (42) is fixed to a right end surface of the shell tube (1), a group of heat exchanging tubes (43) are disposed at intervals in the shell tube chamber (11) and left ends of the group of heat exchanging tubes (43) are fixed to the left orifice plate (41) at positions corresponding to the left orifice plate heat exchanging tube mating hole (411) disposed at intervals on the left orifice plate (41), the right end of the group of heat exchange tubes (43) is fixed with the right orifice plate (42) at the position corresponding to the right orifice plate heat exchange tube matching hole (421) which is arranged on the right orifice plate (42) at intervals; the left end cover (2) is matched with the left hole plate (41), the first material leading port I (21), the second material leading port II (22) and the left end cover liquid guiding cavity (23) are communicated with the left hole plate heat exchange pipe matching hole (411), the right end cover (3) is matched with the right hole plate (42), and the right end cover liquid guiding cavity (31) is communicated with the right hole plate heat exchange pipe matching hole (421).
4. The tube heat exchanger for food production according to claim 3, wherein the right side of the left orifice plate (41) is welded to the left end face of the tube shell (1), and the left side of the right orifice plate (42) is welded to the right end face of the tube shell (1); the left end cover (2) is matched and fixed with the left orifice plate (41) through a fastener or a hinge device; the right end cover (3) and the right orifice plate (42) are matched and fixed through a fastener or are matched and fixed through a hinge device.
5. The tubular heat exchanger for food production according to claim 4, wherein when the left end cover (2) is fixed to the left orifice plate (41) by a fastening member, left end cover screw holes (24) are formed in the left end cover (2) at intervals at an edge portion of the left end cover (2), and left end cover fixing screws (241) are provided in the left end cover screw holes (24), left orifice plate screw holes (412) are formed in an edge portion of the left orifice plate (41) at positions corresponding to the left end cover screw holes (24), and the left end cover fixing screws (241) are screwed into the left orifice plate screw holes (412); when the right end cover (3) is matched and fixed with the right hole plate (42) through a fastener, 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), right hole plate screw holes (422) are formed in the edge part of the right hole 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 hole plate screw holes (422).
6. The tubular heat exchanger according to claim 3, wherein the left end of the group of heat exchange tubes (43) protrudes into the left orifice plate heat exchange tube fitting hole (411) of the left orifice plate (41) and is welded and fixed to the left orifice plate heat exchange tube fitting hole (411), and the right end of the group of heat exchange tubes (43) protrudes into the right orifice plate heat exchange tube fitting hole (421) of the right orifice plate (42) and is welded and fixed to the right orifice plate heat exchange tube fitting hole (421).
7. The tube heat exchanger for food production according to claim 5, wherein the left orifice plate screw hole (412) and the right orifice plate screw hole (422) are blind holes.
8. A tube heat exchanger for food production according to claim 3 wherein when the number of the heat exchanging tubes (43) of the one group is twelve, twelve of the left orifice heat exchange tube mating holes (411) and twelve of the right orifice heat exchange tube mating holes (421), the left end cover liquid guide cavity (23) comprises a left end cover first liquid guide concave cavity I (231), a left end cover second liquid guide concave cavity II (232), a left end cover third liquid guide concave cavity III (233), a left end cover fourth liquid guide concave cavity IV (234) and a left end cover fifth liquid guide concave cavity V (235), wherein every two left orifice plate heat exchange tube mating holes (411) correspond to a left end cover liquid guide concave cavity, and a left orifice plate heat exchange tube mating hole (411) respectively corresponds to the first material leading port I (21) and the second material leading port II (22); the right end cover liquid guide cavity (31) comprises a right end cover first liquid guide concave cavity I (311), a right end cover second liquid guide concave cavity II (312), a right end cover third liquid guide concave cavity III (313), a right end cover fourth liquid guide concave cavity IV (314), a right end cover fifth liquid guide concave cavity V (315) and a right end cover sixth liquid guide concave cavity VI (316), wherein every two right pore plate heat exchange tube matching holes (421) correspond to one right end cover liquid guide concave cavity.
9. The tube heat exchanger as claimed in claim 8, wherein the first drain recesses I (231) to V (235) of the left end cap and the first drain recesses I (311) to VI (316) of the right end cap are identical in shape and size and are oval.
10. The tubular heat exchanger for food production according to claim 1, wherein the refrigeration mechanism (5) comprises a refrigeration compressor (51), a condenser (52), a refrigerant liquid outlet pipe (53), a drying filter (54), an evaporation gas outlet pipe (55) and a refrigerant outlet pipe (56), one end of the evaporation gas outlet pipe (55) is connected to the heat exchange medium outlet port (12), the other end of the evaporation gas outlet pipe (55) is connected to 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 outlet pipe (53) is connected between a condenser liquid outlet (522) of the condenser (52) and a drying filter inlet (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 matched and connected with the heat exchange medium inlet interface (13), a throttle valve (561) and an electromagnetic valve (562) are arranged on the pipeline of the refrigerant outlet pipe (56), and the electromagnetic valve (562) is positioned between the throttle valve (531) and the dry filter (54) on the refrigerant outlet pipe (56).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604382.9A CN113310250A (en) | 2021-05-31 | 2021-05-31 | Tubular heat exchanger for food production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110604382.9A CN113310250A (en) | 2021-05-31 | 2021-05-31 | Tubular heat exchanger for food production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113310250A true CN113310250A (en) | 2021-08-27 |
Family
ID=77376647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110604382.9A Withdrawn CN113310250A (en) | 2021-05-31 | 2021-05-31 | Tubular heat exchanger for food production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113310250A (en) |
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| CN106705500A (en) * | 2015-11-12 | 2017-05-24 | 浙江万享科技股份有限公司 | Evaporator |
| CN210107818U (en) * | 2019-05-28 | 2020-02-21 | 苏州必信空调有限公司 | Shell and tube condenser and refrigerating system thereof |
| CN111928543A (en) * | 2020-09-09 | 2020-11-13 | 珠海格力电器股份有限公司 | Condenser and air conditioner |
| CN112284162A (en) * | 2020-10-29 | 2021-01-29 | 胡建军 | High-efficiency heat exchanger capable of enabling heat exchange medium to flow spirally |
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2021
- 2021-05-31 CN CN202110604382.9A patent/CN113310250A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245972A (en) * | 2008-03-14 | 2008-08-20 | 泰州市新恒盛机械制造有限公司 | Fin-penetrating type heat exchanger |
| CN101929811A (en) * | 2010-09-29 | 2010-12-29 | 中原工学院 | Case-type multi-shell-pass countercurrent speedup type shell and tube heat exchanger |
| CN102155855A (en) * | 2011-03-11 | 2011-08-17 | 蒋剑荣 | Constant temperature and humidity heat exchanger and ice crystal energy storage central air conditioner utilizing same |
| CN202692546U (en) * | 2012-07-16 | 2013-01-23 | 佛山市顺德区高美空调设备有限公司 | Falling film type evaporator for refrigeration loop |
| CN106705500A (en) * | 2015-11-12 | 2017-05-24 | 浙江万享科技股份有限公司 | Evaporator |
| CN205580262U (en) * | 2015-12-31 | 2016-09-14 | 高全生 | Wave dotted pair depends on viscous fluid tubular heat exchanger |
| CN210107818U (en) * | 2019-05-28 | 2020-02-21 | 苏州必信空调有限公司 | Shell and tube condenser and refrigerating system thereof |
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Application publication date: 20210827 |
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