JP2002181490A - Heat exchanger and method of heat exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger and a method of heat exchange capable of contriving to prevent various components and the like in a liquid denatured by heating or cooling from adhering to the inner wall of a metallic pipe in the case of performing the heating and cooling treatments of various liquids, for example, a liquid seasoning and the like. SOLUTION: A heat exchanger F is constituted by arranging a metallic pipe 2 in the atmosphere filled with a heating medium or refrigerant and allowing various fluids to flow into this metallic pipe 2 so as to perform heat exchange. There is provided an ultrasonic oscillator 3R imparting ultrasonic oscillations to the metallic pipe 2 through the heating medium or refrigerant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger and a heat exchanging method suitable for use in efficiently heating and cooling liquid seasoning foods in a short time.

[0002]

2. Description of the Related Art Conventionally, when a food such as a liquid seasoning is to be subjected to a heat treatment and a cooling treatment in a short time and efficiently, a metal pipe is heated with a heat medium such as hot water or saturated steam or cold water. Heat exchangers which are arranged in an atmosphere filled with such a refrigerant and exchange heat between a liquid flowing through the metal pipe and a heat medium or a refrigerant have been widely used.

[0003]

However, when, for example, a liquid seasoning is cooked or pasteurized using a conventional heat exchanger, heat denaturing components such as proteins contained in the liquid seasoning solidify. Therefore, the treatment amount is significantly reduced, and it takes much time to clean the deposits in the metal pipe. If the cleaning of the deposits in the metal pipe is incomplete, these deposits become burnt foreign substances and fall off gradually, and are mixed into the processing liquid. The dissolved air expelled from the liquid seasoning due to the rise of the liquid temperature temporarily adheres to the inside of the metal pipe and is pushed out in a wavy manner, causing a variation in the flow rate at the outlet of the metal pipe. And so on.

Accordingly, a technical problem of the present invention is that when various liquids such as a liquid seasoning are subjected to a heat treatment or a cooling treatment, various components and the like in the liquid modified by heating or cooling are mixed with a metal pipe. It is an object of the present invention to provide a heat exchanger and a heat exchange method devised so that the heat exchanger can be prevented from adhering to an inner wall of the heat exchanger.

[0005]

(1) In order to solve the above technical problem, according to the present invention, a metal pipe is provided in an atmosphere filled with a heat medium or a refrigerant as described in claim 1 above. And a heat exchanger for performing heat exchange between a liquid flowing through the metal pipe and a heat medium or a refrigerant, wherein the metal pipe has an ultrasonic vibration through the heat medium or the refrigerant. It is configured to provide an ultrasonic transducer that gives

(2) In the present invention, as described in claim 2, a metal pipe is helically disposed inside a tank containing a heat medium or a refrigerant, and the metal pipe is helically disposed. A sealed case body is inserted into the inside of the case, and an ultrasonic vibrator is mounted inside the case body so as to emit ultrasonic waves toward a surrounding metal pipe.

(3) In the present invention, a case body is attached to an outer surface of a tank for a heat medium or a refrigerant in which a large number of metal pipes are piped, and a case body is provided inside the case body. Is configured to mount an ultrasonic vibrator so as to emit ultrasonic waves toward a metal pipe in the tank.

(4) According to the present invention, the metal pipe through which the liquid flows is disposed in an atmosphere filled with a heat medium or a refrigerant, so that the liquid and the heat medium or A heat exchange method for exchanging heat with a refrigerant, wherein ultrasonic vibration is applied to the metal pipe via the heat medium or the refrigerant.

According to the means described in the above (1), the ultrasonic wave generated by the vibration by the ultrasonic vibrator reaches the metal pipe via the heat medium or the refrigerant and vibrates the metal pipe. When heat-treated through this metal pipe, it can prevent protein components and the like in the liquid seasoning denatured by heating from adhering to the inner wall surface of the metal pipe. In addition to eliminating the inconvenience of reducing the amount and the incorporation of burn-like foreign matter into the processing solution, it is also possible to easily clean the inside of the metal pipe.

According to the means described in the above (2), a case body made in a sealed state is inserted inside a spirally arranged metal pipe, and an ultrasonic vibrator is mounted inside the case body. In addition to completely isolating the ultrasonic transducer from the heat medium or the refrigerant, it is possible to prevent the occurrence of problems such as corrosion and malfunction, and to generate the ultrasonic waves generated by the vibration of the ultrasonic transducer to the heat medium or the refrigerant. And vibrates the metal pipe, thereby preventing the adhesion of the modified component to the inner wall surface of the metal pipe, and preventing the occurrence of various obstacles based on the adhesion of the modified component. enable.

According to the means described in the above (3), the case is mounted on the outer surface of the heat medium or refrigerant tank, and the ultrasonic vibrator is mounted inside the case. It is completely isolated from the medium or the refrigerant to prevent the occurrence of problems such as corrosion and malfunction, and in addition, various maintenance for the ultrasonic vibrator can be easily performed, and this ultrasonic vibrator The ultrasonic wave generated by the vibration of the metal pipe is applied to the metal pipe via the heat medium or the refrigerant to vibrate the metal pipe, so that the modified component can be prevented from adhering to the inner wall of the metal pipe, and the modified component can be prevented. It is possible to prevent the occurrence of various obstacles due to the adhesion of slime.

According to the heat exchange method described in the above (4),
Similarly to the heat exchanger described in the above (1), since the ultrasonic vibration reaches the metal pipe and vibrates the metal pipe, for example, even when the liquid seasoning is heat-treated through the metal pipe, the heating is performed. It prevents protein components and the like in the liquid seasoning denatured by the process from adhering to the inner wall surface of the metal pipe. In addition to solving the inconvenience of mixing into the metal pipe, it is possible to easily clean the inside of the metal pipe.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchanger and a heat exchange method according to the present invention will be described below with reference to the drawings.
1 is a block diagram of a continuous automatic packaging system embodying the present invention, in which A and B are, for example, steaming pots for simmering raw materials for liquid seasonings, and C is a pumping pot from each of these steaming pots A and B. Storage tank D for the steamed liquid seasoning that is sent
A supply pipe F for feeding the steamed liquid seasoning fed from the storage tank D through the transport pipe E by the pump P using a heating medium such as saturated steam water or hot water, or a refrigerant such as cold water. 1 shows a heat exchanger according to the present invention, which can be heated or cooled to a temperature of.

Further, in the figure, G is a supply pipe for feeding the liquid seasoning heat-exchanged by the heat exchanger F according to the present invention to the automatic packaging machine J, and I is a three-way automatic switching valve H in the middle of the supply pipe G. If the liquid seasoning is not heated or cooled to a predetermined temperature in the return pipe connected through the above, or if the liquid seasoning cannot be processed by the automatic packaging machine J, the liquid seasoning passes through the return pipe I again, and It is configured to be sent back to the storage tank D.

JT is a packaging bag of a liquid seasoning continuously packaged by the automatic packaging machine J, and K is a straight bag for cooling the continuous packaging bag JT to a predetermined temperature suitable for packaging. The cooling device L is a cutting device for cutting the wrapping bag JT which is continuous in a cooled band shape, and the heat exchanger F according to the present invention is used by being incorporated in the packaging line configured as described above. The configuration of the illustrated line is an example of the embodiment, and it is a matter of course that the present invention can be used by being incorporated into a packaging line other than the illustrated one or another line.

Next, the heat exchanger F according to the present invention described above will be described.
2 to 5 illustrate the structure of a spiral heat exchanger in which the entire metal pipe 2 through which a liquid to be treated flows is spirally arranged. FIG. 3 is a plan view, FIG. 4 is a front view illustrating the configuration of the ultrasonic vibration device, and FIG. 5 is an enlarged view of a main part of the ultrasonic vibration device indicated by reference numeral W in FIG. In these drawings, reference numeral 1 denotes a tank for accommodating the interior 1H filled with a heat medium or a refrigerant, 1Z denotes an upper lid of the tank 1, and 1A and 1C are provided in the upper lid 1Z. Water supply ports for various heat mediums or refrigerants, 1B is a mounting port for a temperature sensor similarly provided on the upper lid 1Z, 1D is a discharge port for the heat medium or refrigerant,
1X indicates a bottom surface of the tank 1 inclined toward the drain port 1D, and 1Y indicates a flange of the tank 1 to which the upper lid 1Z is attached.

Reference numerals 2A and 2B denote an inlet and an outlet of a metal pipe 2 spirally disposed in the tank 1. The inlet and outlet of the metal pipe 2 through the transport pipe E shown in FIG. When the liquid such as the liquid seasoning sent into the tank 1 flows through the spirally arranged metal pipe 2, heat is exchanged by a heat medium or a refrigerant filled in the tank 1 and heated. Is cooled and then sent out from the outlet 2B through the liquid supply pipe G to the automatic packaging machine J for automatic packaging.

Reference numeral 3 denotes a sealed metal case body vertically inserted into the central portion of the spirally arranged metal pipe 2, and the inside of each case body 3 is shown in FIGS. 5
As shown in FIG. 7, a plurality of ultrasonic transducers 3R are mounted with their ultrasonic emission ports directed toward the surrounding metal pipes 2, and the ultrasonic transducers 3R are generated by the vibrations of these ultrasonic transducers 3R. Since ultrasonic waves are transmitted from the metal case body 3 to the surrounding metal pipe 2 through a heat medium or a refrigerant and vibrate strongly, various denaturing substances and the like on the inner wall of the metal pipe 2 To prevent adhesion of scale, etc.
It is configured such that a denaturing substance or the like can be peeled off from the inner wall.

Further, in FIGS. 2 and 4, 3T... Denote supporting legs for supporting each of the case bodies 3, and 4 and 4A in FIGS. A support plate and a hook supported on the pipe 2 are shown. In FIG. 5, reference numerals 3X and 3X denote mounting pieces for connecting the case body 3 to the support plate 4 described above.

FIGS. 6 to 10 illustrate another embodiment of the above-described heat exchanger according to the present invention, and FIG. 6 illustrates the entire heat exchanger F 'having a tubular structure. Front view,
FIG. 7 is a side view, FIG. 8 is a partial cross-sectional side view of a jacket tank 6 which is a component of the heat exchanger F ', FIG. 9 is a front view with its lid removed, and FIG. 8 is a cross-sectional view taken along the line AA. In the heat exchanger F ′ shown in FIGS. 6 and 7, a plurality of jacket tanks 6 having the structure shown in FIGS. 8 to 10 are connected in series. Composed of

That is, as shown in FIGS. 8 to 10, the above-mentioned outer jacket tank 6, which is entirely formed into a large-diameter pipe, has outer jackets 6H and 6Y for heat medium or refrigerant passages provided on both side surfaces. A number of metal pipes 6P through which the processing liquid flows are arranged in parallel in the inside 6H of the tank 6, and a support for supporting both ends of each of the metal pipes 6P inside the both ends of the jacket tank 6. By providing the plates 6D, 6D, processing chambers 6E, 6F for the processing liquid are formed, respectively, and the openings of these chambers 6E, 6F are closed by lid plates 6 ', 6', respectively. A partition plate 6E 'is provided at the center of the storage chamber 6E to partition the storage chamber 6E into upper and lower chambers.
An outflow pipe 6K communicating with an upper chamber of each of the upper and lower chambers 6E and an inflow pipe 6J communicating with the lower chamber are projected from an outer surface of the lid plate 6 '.

Therefore, the outer tank 6 is moved from the inflow pipe 6J.
The liquid that has flowed into the lower half of the chamber 6E passes through the inside of the lower half of the metal pipe 6P with its front end facing the lower half of the chamber 6E and enters the opposite chamber 6F. ,
Then, it flows through the upper half metal pipes 6P... To the above-mentioned upper half storage chamber 6E, and flows out of the jacket tank 6 from the outflow pipe 6K.

In order to construct the heat exchanger F 'using the mantle tank 6 configured as described above, first, a plurality of mantle tanks 6.
And a caster 5A for movement as shown in FIGS.
And a media inlet 6A is attached to the flow port 6X of the uppermost outer tank 6 using a flange 6S ', and the lowermost outer tank 6 is provided.
Outlet 6 for the medium by using the flange 6T
Install B.

Further, upper and lower outer tanks 6 provided in multiple stages
Are connected to each other through communication pipes 6S, 6T using flanges 6S ', 6S' and 6T ', 6T', respectively. The tanks 6 form a flow passage for the medium that communicates in series, and the upper and lower outflow pipes 6K and the inflow pipes 6J of the upper and lower outer tanks 6 are connected to each other using flow pipes 6N. The inflow pipe 6J protruding from the lowermost jacket tank 6 serves as a liquid inlet for connecting the fluid transport pipe E shown in FIG. Outflow pipe 6K
Is a liquid outlet for connecting the liquid supply pipe G also shown in FIG. 1, so that the fluid passes through the metal pipes 6P in the lower jacket tank 6 and gradually becomes the metal in the upper jacket tank 6. Heat exchanger F 'flowing to pipe 6P ...
It is a mechanism to build.

According to the heat exchanger F 'constructed as described above, the heating medium or the refrigerant is supplied from the medium inlet 6A at the uppermost stage, so that all the outer tanks 6 are filled with the heating medium or the refrigerant. Each of these jacket tanks 6 ...
The liquid flowing from the lower part to the upper part in the metal pipe 6P piped therein can be subjected to heat exchange to heat or cool the liquid, and such heat exchange can be performed in each of the multi-stage outer jacket tanks 6. , The heat exchange can be performed more reliably, and the liquid heated or cooled in this way can be supplied from the outlet pipe 6K to the automatic packaging machine J side.

According to the present invention, in the multi-stage heat exchanger F 'constructed as described above, a metal case body 7 is attached to the outer surface of each outer tank 6 as shown in FIGS. Inside the case body 7, a plurality of ultrasonic vibrators 8 are attached with their ultrasonic emission ports directed to the metal pipes 6P installed inside, respectively. Ultrasonic waves generated by the vibration of the vibrators 8 are passed through the heating medium or the refrigerant from the jacket tank 6 to the metal pipe 6P.
, And vibrates vigorously, so that it is possible to prevent adhesion of various denaturing substances and scales to the inner wall of the metal pipe 6P, and to peel off the adhering denaturing substances. .

Each of the above ultrasonic transducers 3R ... and 8 ...
Can be driven in synchronization with the operation of each heat exchanger F, or can be driven arbitrarily or periodically by a switch operation or a timed device, but the selection is arbitrary.

[0028]

As described above, according to the heat exchanger and the heat exchange method of the present invention, the ultrasonic vibration is applied to the metal pipe via the heat medium or the refrigerant by the ultrasonic vibrator. Even if the liquid seasoning is heat-treated, it can prevent the protein components and the like in the liquid seasoning that have been denatured by heating from adhering to the inner wall of the metal pipe. In addition to being easy to clean, it also prevents burn-like foreign matter from being mixed into the processing liquid, and does not collect on the inner wall of the metal pipe even if the dissolved air in the liquid seasoning is driven out by heating.
It has the advantage of reducing the variation in the flow rate at the outlet of the metal pipe, and further enhances the cleaning effect by transmitting ultrasonic waves when cleaning the inside of the metal pipe using a cleaning agent. It is particularly suitable for use in an automatic packaging system or the like as illustrated in FIG.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of an automatic packaging system implementing a heat exchanger according to the present invention.

FIG. 2 is a front view illustrating a configuration of a spiral heat exchanger according to the present invention.

FIG. 3 is a plan view of the heat exchanger shown in FIG.

FIG. 4 is a front view illustrating a configuration of an ultrasonic vibration device used in the heat exchanger shown in FIG. 2;

FIG. 5 is an enlarged plan view of a part of the ultrasonic vibration device indicated by reference numeral W in FIG.

FIG. 6 is a front view showing a configuration of a jacketed heat exchanger according to the present invention.

FIG. 7 is a side view of the heat exchanger shown in FIG.

FIG. 8 is a partial sectional side view of a jacket tank constituting the jacket heat exchanger.

FIG. 9 is a front view of the jacket tank shown in FIG. 8;

FIG. 10 is a sectional view taken along line AA of FIG. 8;

[Explanation of symbols]

 F, F 'heat exchanger 1 tank 2 helically arranged metal pipe 3 metal case body 3R ultrasonic vibrator 6 outer tank 6P metal pipe 7 metal case body 8 ultrasonic vibrator

Continuation of the front page (72) Inventor Kazuhiko Tanaka 2-7-4 Shinoharahigashi, Kohoku-ku, Yokohama-shi, Kanagawa F-term (reference) 3L103 AA20 BB35 CC02 DD05 DD36 4B054 AA06 AB11 BA06 BC03 CH02

Claims (4)

[Claims] 1. A heat exchanger in which a metal pipe is disposed in an atmosphere filled with a heat medium or a refrigerant, and performs heat exchange between a liquid flowing in the metal pipe and the heat medium or the refrigerant, A heat exchanger, comprising: an ultrasonic vibrator for applying ultrasonic vibration to the metal pipe via the heat medium or the refrigerant. 2. A metal pipe is helically arranged inside a tank containing a heat medium or a refrigerant, and a sealed case body is inserted inside the helically arranged metal pipe.
The heat exchanger according to claim 1, wherein an ultrasonic vibrator is mounted inside the case body so as to emit ultrasonic waves toward a surrounding metal pipe. 3. A case body is mounted on an outer surface of a tank for a heat medium or a refrigerant in which a number of metal pipes are provided, and an ultrasonic wave is radiated inside the case body toward the metal pipe in the tank. The heat exchanger according to claim 1, wherein the ultrasonic vibrator is attached as described above. 4. A heat exchange method for exchanging heat between a liquid and a heat medium or a refrigerant by disposing a metal pipe through which a liquid flows in an atmosphere filled with a heat medium or a refrigerant. A heat exchange method, wherein ultrasonic vibration is applied to the metal pipe via the heat medium or the refrigerant.