JPH01288744A - Heat value detector - Google Patents

Abstract

PURPOSE:To achieve a higher quality of foods or the like, by making a liquid flow from one end to the other end of a heat receiving section of a spiral hollow pipe to detect a temperature difference between both ends of the heat receiving section. CONSTITUTION:When a fluid such as water flow at one end 1a of a pipe 1 through a piping 51, the fluid returns to a piping 52 through a spiral part of the pipe 1 and the other end 1b thereof 1. At this point, as the temperature is high by a thermal processing of foods or the like inside a processing device 4, the temperature of the fluid flowing out from a piping 52 differs from the temperature thereof when flowing in from the piping 51. With such an arrangement, a heat absorption can be detected at a spiral heat receiving part by a measuring means 6 from a detection temperature difference of two temperature detectors 2 mounted respectively at one end 1a of the pipe 1 and at the other end 1b thereof. This enables a higher quality of foods by measuring a heat capacity of a food indirectly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a heat amount detection device for detecting the amount of heat consumed within a certain period of time.

[Prior Art] For example, when producing foods by steaming or roasting, production conditions such as temperature and time are important factors.

Conventionally, in the field of food manufacturing, the manufacturing conditions have been determined based on experience, and the manufacturing craftsmen have manufactured large quantities of food based on their knowledge and intuition.

In the case of factories, etc., equipment may be installed to set and automatically control manufacturing conditions, but in the case of general stores, etc., there is no space to install such equipment.

Furthermore, even when manufacturing conditions are automatically controlled in factories, etc., they are managed based on the factors of ambient temperature and time, such as steaming at a predetermined temperature for a predetermined time and then baking at a predetermined temperature for a predetermined time.

[Problem to be solved by the invention] As explained above, in conventional food manufacturing, manufacturing control is performed using the elements of temperature and time, and the manufacturing conditions are determined based on experience, so it is difficult to determine the manufacturing conditions. In addition to taking a long time to process, the relationship between ambient temperature, time, and food quality was unclear and difficult to predict.

Furthermore, even if the above-mentioned control is performed based on the factors such as ambient temperature and time, there is a problem in that food products are produced unevenly.

Furthermore, there was a problem in that it was difficult to introduce automation for food production in small stores.

This invention was made to solve the above problems, and focuses on the properties of heat capacity and heat absorption rate of foods to be manufactured, and performs manufacturing management based on this heat capacity.
The purpose is to improve the quality of foods, etc., clarify the relationship between manufacturing conditions, and eliminate uneven manufacturing of foods.

Furthermore, it is an object of the present invention to obtain a detection device that is convenient for downsizing manufacturing control equipment.

[Means for Solving the Problems] Therefore, in the heat detection device according to the present invention, a hollow tube is formed into a spiral, spiral, or rectangular wave structure, and one end of the tube is connected to the other end. It is characterized by comprising: a heat receiving section that allows fluid to flow to the end; a temperature sensor disposed in a hollow tube at each end of the heat receiving section; and a measuring means that calculates the amount of heat from the temperature difference detected by the front temperature sensor. It is said that

[Operation] A liquid fluid such as water is poured into one end of the hollow tube of the heat receiving part, and the fluid is poured out from the other end.

At this time, a predetermined detection value is obtained from each temperature sensor installed in the hollow tube at each end of the heat receiving part, and the heat absorption capacity acid per predetermined time is derived by the measuring means based on the detected humidity difference between the two. .

In this case, the spiral or spiral portion of the tube serves to increase the thermal contact area with the detection target.

[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a configuration diagram of a heat receiving part of a calorific value detection device showing an embodiment of the present invention. As shown in the figure, this heat receiving part is made of a hollow metal with high thermal conductivity such as copper. Wind the tube (1) in a spiral shape from the end of the first winding (A) to the direction of the beginning of the winding (
(in the direction of the arrow) and the straight section (11) from one end of the tube (1a) to the beginning of winding (B), the other end of the tube (ib) and the end of winding (A). The straight line part (1
2) are configured to be approximately parallel.

two straight sections (11) at the ends of this hollow tube (1);
A temperature sensor (2) such as a resistance temperature detector, a thermistor, or a thermocouple is inserted so that the heat detection portion (21) is located inside (12).

Attachments (3a) and (3b) are formed at one end (la) and the other end (1b) of this tube (1).

Further, FIG. 2 shows an example of the use of such a calorific value detection device when it is attached to a food processing machine or the like.

In the figure, (4) is the processing tool, and (51).

(52) is a pipe serving as a flow path for flowing liquid fluid such as water into the hollow pipe (1).

As shown in the figure, one end (ia) and the other end (1b) of the tube (1) of the heat receiving part of the calorific value detection device are connected to a hole (4b) formed in the upper part of the processing tool (4).

(4b) to the outside of the processing tool (4), and the end (la
), the mounting portion (la) formed by (lb).

(lb) into the processing tool (4), the detection device itself is attached at a predetermined position inside the processing tool (4).

Also, a mounting part (3a) for the pipe (1) that extends the pipes (51) and (52) to the outside of the processing machine (4).

It is inserted into the part (3b). The output of the front temperature sensor (2) is measured and calculated by the measuring means (6).

Next, the operation of the calorific value detector configured as described above will be explained.

When a liquid fluid such as water flows from one end (1a) of the pipe (1) through the pipe (51), the fluid flows through the spiral portion of the pipe (1) and the other end (1a) of the pipe (1). ib) via piping (5
Come back to 2).

At this time, since the temperature inside the processing device (4) is high due to thermal processing of foods, etc., the temperature of the fluid when it is poured from the pipe (51) and the temperature of the fluid when it flows out from the pipe (52) are different. Of course it is.

Therefore, the measuring means (6) accurately detects the spiral heat reception from the detected temperatures of the two temperature sensors (2) whose detection parts (21) are located at one end (1a) and the other end (1b) of the tube (1). Detects the amount of heat absorption in a part.

After this detection, the processing machine (4
) can be controlled by controlling the internal temperature.

In this case, a certain relationship is found between the heat capacity of the spiral portion and the heat capacity of the object to be processed by the processing device (4), so it is necessary to check the heat capacity of the food processed by the processing device (4). 1. Food processing becomes easier to predict.

Note that the detected temperature at one end (A) of the tube (1) is C1,
The detected temperature at the other end (B) is C2, the flow rate is P, the tube (1
), where S is the cross-sectional area, and heat capacity Q is the heat transfer coefficient, K.

It is expressed as Q=KPS (C2-C1). Such calculations may be performed by the measuring means 6.

In addition, the length of the spiral part or the straight part of the tube (1) may be determined as appropriate depending on the size of the processing device (4) to be attached or the selection of the food to be processed. The same effect can be obtained even if the shape of 1) is a spiral shape as shown in FIGS. 3 and 4. In addition, as shown in Figure 5, if you want to obtain an average amount of heat absorption,
) has a rectangular wave-like structure and is arranged throughout the processing tool (4) for detection.

In addition to heating food, this detection device can also be used in other cases such as cooling of food, heating and solidifying of pharmaceutical tablets, etc.

[Effects of the Invention] As explained above, according to the present invention, a hollow pipe made of a single piece of wood has a spiral, spiral, or rectangular wave structure, and a heat receiving section that allows fluid to flow from one end of the pipe to the other end is provided. and a temperature sensor disposed in a hollow tube at each end of the heat receiving part, and the amount of heat is calculated from the difference in temperature detected by the front temperature sensor, so the heat capacity of one food can be indirectly measured. Manufacturing control using heat capacity as a parameter makes it easier to clarify the relationship between food and manufacturing conditions than before, and improves food quality.

Furthermore, since the heat absorption capacity is calculated by pouring fluid into a spiral or spiral tube, the detection itself is compact and can be easily installed in small equipment.

[Brief explanation of the drawing]

FIGS. 1, 3, 4, and 5 are block diagrams showing one embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the mounting application of the present invention. 1...tube? ...Thermocouple (thermal detection sensor), 21.
...Detection part, 4... Processing device, 51.52... Piping, 1a, lb... End, 11.12... Straight line part.

Claims (2)

[Claims] (1) A single hollow tube has a spiral, spiral, or rectangular wave structure, and includes a heat receiving section that allows fluid to flow from one end of the tube to the other, and a hollow space at each end of the heat receiving section. What is claimed is: 1. A heat quantity detection device comprising: a temperature sensor disposed in a pipe; and a measuring means for calculating a heat quantity from a temperature difference detected by both temperature sensors. (2) The heat amount detection device according to claim 1, wherein the hollow tube of the heat receiving portion is constructed of a metal tube having high thermal conductivity.