JPH03122494A - Preheating and cooling unit for raw material - Google Patents

Abstract

PURPOSE:To improve heat conductivity and facilitate the temp. control for raw material by forming heat exchanging members with aluminum alloy in a titled unit used when material is supplied to a firing unit or cooling unit. CONSTITUTION:Between the upper holding plate part 2 and the lower holding plate part 3 a number of aluminum alloy pipes 4 as heat exchanging members are installed. The part 2 and the part 3 are fixed by a fixing rod 5 in screw-in type. Further, the overall unit such as the upper guide case 8, the lower guide case 11, etc., is formed in screw-in type using bolts. Accordingly, as the whole unit can be easily dismantled, cleaning and sterization in high an low temp. can be easily carried out. Further, as the heat exchanging members 4 are made of aluminum, heat conductivity is excellently high and the hot water temp. for heat exchanging is not necessary to be raised and thereby, the temp. control for raw material can be easily carried out.

Description

Detailed Description of the Invention: a. Industrial Application Field This invention relates to a device for preheating and cooling raw materials, and in particular, when feeding materials to a baking device or a cooling device, it is possible to sufficiently heat or cool materials in advance with low energy and high efficiency. This invention relates to a new device for the purpose of this invention.

b. Conventional technology This type of device that has been used in the past was introduced in 1978.
No. 1, Japanese Utility Model Publication No. 33-17286, as shown in FIGS. 1 and 2, spiral and horizontal configurations made of stainless steel pipes have been developed.

C1 Problems to be Solved by the Invention When using a heat exchange member made of stainless steel, the focus was only on the contact resistance and no attention was paid to heat conduction, resulting in poor heat conduction.For example, when heating raw materials to 60°C, 100℃
In that case, the raw material must be heated to 60% water temperature.
It is difficult to maintain the temperature at 65°C, and when the raw material is liquid egg, gelation occurs (2, 2
It was impossible to operate continuously for more than an hour, and the inside had to be cleaned every hour and a half, making the work extremely inefficient.

Also, no one noticed that the heat exchanger was changed to aluminum. In addition, since the material passing through the pipe does not flow naturally with a spiral or horizontal vibrator, it must be forced under pressure, which requires a pressure pump, and at the same time, it is extremely difficult to clean the inside of the pipe. For example, egg liquid, etc. must be preheated and fed to the baking equipment before it becomes a gel, or if it gels inside the pipe, cleaning the pipe is extremely difficult and efficiency is significantly reduced. It was declining. In addition, the horizontal type also had many problems such as getting stuck in the middle.

Furthermore, since these conventional devices have a complicated structure and are entirely integrated, it is extremely difficult to disassemble the vibrator section and clean the entire device, even when cleaning a pipe, for example.

Furthermore, stainless steel is susceptible to corrosion due to liquid eggs and the like, making it difficult for liquid eggs to pass through, requiring frequent cleaning.

Furthermore, since stainless steel has poor heat conductivity, the heat exchange efficiency is poor, and the boiler and the like have to be made larger, resulting in an increase in the size of the entire device.

The purpose of this invention is to provide an extremely effective means for quickly eliminating the following defects, and in particular, by making the pipe of a corrosion-resistant aluminum alloy, The purpose of the present invention is to provide a preheating and cooling device for raw materials that exchanges heat with a large amount of energy, can be operated continuously for a long time, has good corrosion resistance, and can be downsized.

61 Means for Solving the Problems The raw material preheating and cooling device according to the present invention performs heat exchange by supplying raw materials into a heat exchange member that is heated or cooled from the outside, and the heat exchange member is made of an aluminum alloy. It is a configuration formed by.

C1 Effect In the raw material preheating and cooling device according to this patent, the heat exchange member is made of aluminum alloy, so heat exchange can be performed at a low temperature with a small amount of energy, and because it has contact resistance, it does not gel. It can be operated continuously for long periods of time, and can perform highly efficient heat exchange with a small boiler.

f. Examples Hereinafter, preferred embodiments of the raw material preheating and cooling device according to the present invention will be described in detail with reference to the drawings. In the drawings, what is indicated by the symbol l is a hollow case that is entirely columnar; A ball holding plate part 2 and a ball holding plate part 3 are attached to the upper and lower parts of the case l. A large number of tapes 4 as heat exchange members made of aluminum alloy are provided between the ball holding plate part 2 and the ball holding plate part 3, and the ball holding plate part 2 and the ball holding plate part 3 are fixed rods. 5, and the -L portion of the fixing rod 5 is fixed with a bag nut 6. An upper guide case 8 having an upper lower opening and a lower opening 10 is attached to the upper part of the upper holding plate part 2 with screws 9, and a lower guide case 11 having a lower opening 10 with an opening is attached to the lower part of the lower holding plate 3. It is attached by 12.

Further, a supply section 13 and a discharge section 14 for supplying hot water, hot air, cold water, cold air, etc. are provided on the side of the case 1.
and the discharge section 14 are connected to the heating or cooling section I5.

In the above configuration, when the preheating and cooling device according to the present invention is operated, for example, when egg liquid is preheated and supplied to the baking device, the heating or cooling ff
When i+5 is activated and hot water (approximately 70°C) is circulated inside the case via the supply section 13, discharge section 14, and circulation pump 20, and the egg liquid is poured from the lower part between the upper parts, each pipe 4 will naturally close due to its own weight. is guided to the lower opening 10 and heated to approximately 20°C.
The egg liquid is supplied to an external baking device in a state on the verge of gelatinization at 50 to 60°C. In addition, in the case of cooling, cooling water is circulated to pre-cool sweets such as pudding and agar before feeding them into the molding machine. Further, as a result of experiments, it has been found that it is preferable to use cold air or hot air instead of cold water or hot water.

Although the heat exchange member in the present invention has a pipe shape, it can also be configured as a plate member.

g1 Effects of the invention Since the heat exchange member is made of aluminum, it has extremely good thermal conductivity, and there is no need to increase the IJJ temperature for heat exchange, thereby making it possible to control the temperature of the raw material. In the case of liquid eggs, it is possible to operate continuously for a long time at a temperature just before gelation occurs. This can be done using only 3% of the energy compared to conventional methods. Since the device according to the present invention has the above-described structure and operation, the material can be stably supplied without getting clogged on the way because the material passes through the vertical pipe due to its own weight.

In addition, since the entire device is screwed in with bolts, the entire device can be easily disassembled by removing the guide case and the fixing rod, making it extremely easy to clean and cleaning the pipes. This device uses egg liquid, pudding,
In addition, high-temperature pasteurization of milk is also possible.

In addition, raw materials and 1. In addition to those shown in the embodiments, each pillar side can be provided.

It is also possible to heat the case with oil or the like outside the water.

Furthermore, since the pipe is made of aluminum alloy or contact-resistant aluminum, there is no corrosion, the flow and quality of the raw material does not deteriorate, and the structure of the raw material is not destroyed.

In addition, since the heat efficiency is high and the heat conduction is good, the boiler for heating the raw materials can be made small, and the overall shape can be made small and portable.

[Brief explanation of drawings]

1 and 2 are side sectional views showing the conventional structure, FIG. 3 is a side sectional view showing the overall structure of the device according to the present invention, and FIG. 4 is a plane sectional view taken along line A-A in FIG. FIG. 5 is a side view showing the overall connection configuration. 1 is a case, 2.3 is an upper and lower holding plate 4 is a heat exchange stamp material (pipe), and 5 is a fixing rod. that's all

Claims (1)

[Claims] [1] Heat exchange member (4) heated or cooled from the outside
A preheating and cooling device for raw materials, characterized in that the heat exchange member (4) is made of an aluminum alloy. [2] The raw material preheating and cooling device according to claim 1, wherein the heat exchange member (4) is made of a pipe. [3] A case (1) having an almost hollow shape as a whole, a large number of heat exchange members (4) made of aluminum alloy provided vertically along the axial direction within the case (1), and each of the heat exchange members (4) made of aluminum alloy. An upper holding plate part (2) and a lower holding plate part (3) for holding the upper and lower parts of the replacement member (4), and the upper holding plate part (2).
an upper guide case (8) having an upper opening (7) which is detachably attached to the upper part of the lower holding plate part (3) via a screw (9); a lower guide case (11) provided with a lower opening (7);
and a heating or cooling unit (15) connected to the case (1) for heating or cooling the inside of the case (1), the upper guide case (8) and the lower guide case (1).
1) is detachable from each of the holding plate parts (2, 3), and the heat exchange member (4) can be directly cleaned from the outside. [4] The raw material preheating and cooling device according to claim 1, wherein the heat exchange member (4) is made of contact-resistant aluminum.