JPH0564084B2 - - Google Patents

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a reaction system in which a plurality of reactive stock solutions such as two or three liquids are mixed and reacted, and a raw material tank for storing each reactive stock solution is used. The present invention relates to a temperature control device. More specifically, the present invention relates to a temperature control device for storing reactive stock solutions at different temperatures.

[Conventional technology]

For example, when manufacturing a product by mixing and reacting two or three reactive stock solutions such as synthetic resin foam, each reactive stock solution is stored in a raw material tank, and the raw material tank is used to collect the necessary materials. An amount was taken out and used for the reaction. However, each reactive stock solution must be stored at a different temperature in order to set reaction conditions or to prevent denaturation due to temperature. In this case, conventionally, the temperature of the raw material tank was kept constant by circulating hot water or cold water depending on the respective temperature through a water jacket provided around the raw material tank.
However, constant-temperature water must be created and circulated for each stock solution, which has the disadvantage of requiring a large-scale temperature control device.

[Purpose of the invention]

In order to eliminate the above-mentioned drawbacks, the present invention connects piping for circulating hot water and cold water to the raw material tank, and also installs a valve in the branch piping connected to each raw material tank. The present invention proposes a temperature control device in which each valve is equipped with a temperature sensor to adjust the opening and closing of the valve.

〔Example〕

The temperature control device according to the present invention will be explained in detail below using the drawings. Figure 1 is an explanatory diagram showing an example of the piping of the above temperature control device. _T1 to _T3 are raw material tanks that store the reactive stock solutions at their respective appropriate temperatures, and supply only the amount of reactive stock solution required for the reaction. It is for supplying. In addition, raw material tank T ₁
~T ₃ each has an internal temperature sensor (not shown)
This temperature sensor controls valves B ₁ to B ₁₄ , which will be described later. Moreover, the temperature sensor directly measures the temperature of the reactive stock solution inside the raw material tanks T ₁ to _{T 3} and controls the opening of the valves B ₁ to _{B 14} . 1 is a water tank for storing a certain amount of cold water circulating in the temperature control device and stably supplying it. 2 is a pump for circulating water in the water tank 1. 3 is a chiller unit, and water tank 1 is circulated by pump 2.
It is a device that cools water, depending on the capacity of the temperature control device such as an air-cooled type, a water-cooled type, or an air-cooled heat pump. Reference numeral 4 denotes a cold water pipe, which is a circulation path for cold water that is cooled by passing through the chiller unit 3 by the pump 2, and has branch pipes 4b and 4c branching to each raw material tank _T1 to _T3 . be. The branch pipe 4b is an output side connected to the inlet of each of the raw material tanks _T1 to _T3 , and the branch pipe 4c is a discharge side connected to the outlet, and valves B1 to B are connected to each of the raw material tanks _T1 to T3. ₆ . To explain further, the reason why valves B ₁ to _{B 6} are arranged at both the inlet and outlet of cold water is to prevent cold water from entering hot water piping 7, which will be described later, and to prevent loss of thermal energy. It is. Furthermore, the cold water pipe 4 has a bypass pipe 4a. This bypass piping 4a is provided because the pump 2 is always in an operating state, and is a path through which cold water circulates when cooling with cold water is not required in the raw material tanks _T1 to _T3 . This bypass pipe 4a is also provided with a valve _B7 , and when any of the raw material tanks _T1 to _T3 must be cooled, this valve _B7 is closed and the cold water is poured into the raw material that requires cooling. Tank T ₁ ~
It supplies T ₃ immediately. 5 is a hot water tank, which has a heating machine inside, which produces the hot water necessary to heat the raw material tanks T ₁ to _{T 3} , stores a certain amount of hot water, and can stably supply hot water. It is intended to do so. A pump 6 circulates hot water similarly to the pump 2. Numeral 7 denotes hot water piping, which is a circulation route for hot water that is circulated by pump 6 to each raw material tank T ₁ to _{T 3} in the same way as cold water piping 4, and branch piping that branches to each raw material tank T ₁ to T _3. 7b, 7c and bypass piping 7
a, and valves B ₈ to _{B 14} are arranged in each of them. To explain further, the opening and closing of the valves B ₁ to _{B 14} are controlled by temperature sensors disposed within the raw material tanks T ₁ to _{T 3} .

Next, the operation of the temperature control device according to the present invention will be explained. Now, as shown in Figure 1, the raw material tank T ₁
Assume that three points are controlled: ~T ₃ . First, if there is no need to heat or cool the raw material tanks T ₁ to _{T 3} , open the valves B ₇ and B ₁₄ and the cold water will flow to the cold water tank 1, pump 2, chiller unit 3,
The hot water only circulates through the bypass piping 4a, and hot water is circulated through the hot water tank 5, pump 6, and bypass piping 7.
It simply cycles through a. In addition, raw material tank T ₁
To cool the raw material tank T1, the cold water pipe 4 opens valves _B1 and _B4 , and closes the remaining valves, thereby circulating cold water only to the raw material tank T1, thereby cooling the raw material tank _T1 . Further, when heating the raw material tank T ₁ , hot water is supplied to the raw material tank T 1 by opening the valves B ₈ and B ₁₁ of the hot water piping 7 and closing the remaining valves, thereby allowing the raw material tank T ₁ to be heated. This 2
In two cases, only raw material tank _T1 is heated and cooled,
Other raw material tanks T ₂ and T ₃ are not affected. Also,
When cooling the raw material tank T ₁ and heating the raw material tank T ₂ , it is sufficient to open the valves B ₁ and B ₄ in the cold water pipe 4 and the valves B ₉ and B ₁₂ in the hot water pipe 7, and close the remaining valves. In this way, raw material tanks T ₁ to _{T 3} are connected to valve B ₁
~By opening and closing _B14 , each temperature can be controlled to its own temperature. In addition, since the pumps 2 and 6 are always in operation, hot and cold water can be immediately sent to the raw material tanks T ₁ to _{T 3} that require heating and cooling.
Temperature control of each raw material tank T ₁ to _{T 3} becomes easy.

〔Effect of the invention〕

According to the temperature control device according to the present invention, it is possible to control the temperatures of a plurality of raw material tanks at different temperatures using one type of equipment for hot water and cold water, and the equipment can be made compact and costs can be reduced. can. In addition, by using both hot and cold water, both heating and cooling can be performed.
It can be used even in places where there are large changes in ambient temperature. In addition, since valves are provided at the entrances and exits of the branch pipes connected to the raw material tank, cold water does not mix into the hot water pipes or hot water mixes with the cold water pipes, and loss of thermal energy can be prevented. Moreover, since hot water and cold water are constantly circulated through the bypass piping, it is possible to immediately send hot water or cold water to raw material tanks that require heating or cooling. It has the following effects and characteristics.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram illustrating piping and each part of a temperature control device according to the present invention. 1... Water tank, 3... Chiller unit, 4... Cold water piping, 5... Hot water tank, 7
...Hot water piping, T ₁ ~ T ₃ ... Raw material tank, B ₁ ~
B ₁₄ ...Valve.

Claims (1)

[Claims] 1 Mix multiple reactive stock solutions such as 2-liquid or 3-liquid systems, and use multiple raw material tanks to store the reactive stock solutions of the reaction system to be reacted, and adjust the temperature of the raw material tank at a temperature corresponding to the reactive stock solution. In the temperature control device to be controlled, a temperature sensor is installed in each raw material tank, and hot water and cold water paths are connected to each raw material tank, and hot water and cold water entrances and exits connected to the raw material tank are each equipped with a temperature sensor. A temperature control device that is equipped with a valve that is controlled by a temperature sensor in the raw material tank, and controls the temperature by circulating hot water and cold water according to the temperature of the raw material tank.