JPS60228289A - Method of regulating temperature of liquid in plurality of liquid tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a liquid temperature adjustment method for multiple liquid tanks, and in a device in which a plurality of liquid tanks are arranged in succession, such as a bottle washing machine, each tank The present invention relates to a method for adjusting the liquid temperature of a plurality of liquid tanks in which the temperature of the liquid in the liquid tank is set to rise or fall in stages.

[Prior art]

A conventional liquid temperature adjustment method will be explained using an immersion bottle washer as an example. Figure 4 shows a part of the bottle washing machine.
1st. Second and third immersion baths (1).

(2) and (8) are arranged adjacent to each other in order, and the sprockets (4) + (5) I (
6), (7) Endless chain (8) through k=
The bottles held in a number of holders (not shown) attached to this chain (81) are
1) , (2) , (81 is washed by being immersed in sequence. In such bottle washing machines, the temperature of the washing liquid in the tank is adjusted to prevent sandboxes and increase washing efficiency. For example, the first tank (1) is 60℃ and the second tank (2) is 70℃.
The temperature in the sixth tank (3) is set to rise stepwise to 0°C and 80°C. Each liquid tank (i) + (2) s
In order to set the liquid temperature in (a) as described above, heat exchangers (9) + (lo), (n) are installed in each tank.
and heat source flow rate adjustment valves for various loads (121, (1
31.

Temperature sensors (15), (161
, (1'7) to maintain the liquid temperature for each digit at a predetermined value.

In order to adjust the liquid temperature of multiple liquid tanks in this way, conventionally,
A heat exchanger, flow rate adjustment valve, temperature sensor, etc. must be installed in each tank, and since the heat exchanger is located inside the liquid tank, there is a risk of corrosion, and maintenance is also difficult. [Summary of the Invention] The present invention has been made in view of the above points, and the present invention has the following drawbacks: After taking out the liquid from these tanks and intensively exchanging heat, it is refluxed into each tank, and a large number of containers, etc. are configured to pass through each tank sequentially. This invention provides a method for adjusting the liquid temperature of a plurality of liquid tanks by setting the liquid temperature of the liquid tanks to rise or fall in stages.

[Embodiment of the Invention] Hereinafter, a case where the present invention is applied to a bottle washing machine will be described with reference to FIG. 1 as an embodiment of the present invention. the first one placed adjacent to the
．． 2nd and 6th liquid tanks 1211, 1221 + k”
An endless chain string) is strung through the sub-blocks (R, Containers such as bottles are in each liquid tank 1211, tel.
, and are sequentially immersed in a barrier cleaning solution for cleaning. 6
Tanks (21f J (221 + (turn) 9.6 tanks 1Zti I 12Zl l (tl) After the washing liquid was removed from the tank and subjected to intensive heat exchange by one heat exchanger (38) installed outside the tank, The liquid is refluxed into the liquid tank through the flash nozzles !341, +351, and M'!r arranged at the bottom of the 6 tanks.

The heat exchanger (33) has an adjustment valve that adjusts the flow rate of the heat source)
A temperature sensor (a flow rate adjustment valve) is installed in one of the liquid tanks (in this example, between the second liquid tank) and The washing liquid is activated accordingly, and the removed cleaning liquid is raised to a predetermined temperature by heat exchange, and then refluxed into each liquid tank 1211 + l"l + ". The third son is at the extraction port (29
1, +301, is a filter installed between the fall and the pump (321), and is used to remove label scum, etc. from the washing liquid.

With the above configuration, each liquid tank 1211, J221
, 12B+ will be explained below. When the bottle is immersed in the first liquid tank (211), it is heated at room temperature or through a preheating process, etc.; It is lower temperature than liquid,
It is heated during the process of passing through the cleaning liquid heated by the heat exchanger +331 K, and is discharged at a higher temperature than before being immersed in the first liquid tank (211).Subsequently, this container is transferred to the second Considering the case of being immersed in a liquid bath, the first
The cleaning liquid in the first liquid tank (211) and the second liquid tank (221), which is refluxed through its flash nozzles 1344, 1351a, is heated by a single heat exchanger (33). Therefore, they have the same temperature, but since the temperature entering the second liquid tank (22) is higher than the temperature at which the bottle enters the first liquid tank (211), the bottle is heated. The drop in liquid temperature due to this is smaller in the second liquid tank (221).

In other words, the temperature of the liquid in the second liquid tank (〃) is maintained at a higher value than the first liquid tank (211). During this period, a certain temperature difference occurs in the cleaning liquid due to the difference in temperature of the bottles being immersed, and as a result, the first, second, and 60th liquid tanks 1211 +
+221. tx+Fi The liquid temperature is set to be higher in stages according to the arrangement. As described above, in this embodiment, the cleaning liquid in multiple tanks is heated by one heat exchanger 133), so there is no need to provide a flow rate adjustment valve or a temperature sensor for each tank. Since the heat exchanger is installed outside the σ liquid tank, corrosion can be prevented and maintenance is easy.

In addition, since the temperature difference of the bath liquid is set according to the temperature difference of the bottles sequentially immersed in the six tanks izn, 1221, and 1231, a gentle temperature gradient can be obtained according to the load of the six tanks. In addition, since the heating liquid is circulated through all the tanks through a flash circuit installed at the bottom of the tank, the tank liquid does not stagnate and become uneven in temperature as in the past, and the temperature inside each tank is kept constant. Can be heated evenly.

FIG. 2 shows a modification of the embodiment described based on FIG. 1, and the same parts are given the same reference numerals and the explanation thereof will be omitted. In this example, a flow rate adjustment valve (371) is provided in the flush circuit 1341 of the 10th liquid tank, and the temperature measurement is controlled to an arbitrary value by adjusting the amount of liquid refluxed into this tank (221). This type of flow rate regulating valve can also be installed in other liquid tanks (〃), □), and all liquid tanks (zil)
If installed in (4)), temperature measurement can be controlled more accurately.

Next, a case where the present invention is applied to a preheating process or a cooling process of a bust riser will be described. Figure 6 shows a simplified version of the Nihastrizer, in order of 1. 22nd and 60th liquid tanks 1), beating 1. Decoys are placed adjacent to each other, and above each liquid tank, a container such as a bottle (the crow is transported. Nozzles 87+ and t48 arranged at the top of each liquid tank
j, li'll is supplied to a container (B) such as a bottle in the form of a shower or spray. fl supplied to container (B)
, the liquid drops directly into each liquid tank 1 (, decoy, and is collected and collected. In this way, the first watering process (P7) and the second watering process corresponding to each liquid tank are carried out. In the step (P2) and the third water sprinkling step (P3), the bottle CB) is heated or cooled. In the bust riser shown in FIG. 6, as in the case of the above-mentioned embodiment, there are various types of risers 1).

Tank liquid outlet +50 at the bottom of Z, H) respectively;
βl), a ring is provided, and the tank liquid is sucked from this outlet by a pump and sent to a heat exchanger. After the taken out liquid is heated here, it is pumped between each liquid tank. )
It is refluxed to. The liquid temperature of the tank liquid to be refluxed is the same as that of the sixth liquid tank -
a flow regulating valve actuated by a temperature sensor located within the temperature sensor.

When heating the bottle (B) with the bath riser according to the above configuration, the bottle fallH transported from the left side in the figure is heated by being supplied with heating liquid in the first watering process (P process), Next, in the second watering step (P2), the first step (
The bottle (B) has a higher temperature than P□)'! i=
It will heat up even more. As a result, even if the liquid temperatures in both liquid tanks 11 and 1412A before heating the bottle (B) are the same, the tank liquid collected in the decoy (valley detected after being sprayed on the bottle (B)) The temperature of <' is higher in the second liquid tank.
Similarly, the temperature of the liquid in the third liquid tank (43)
It will be higher than the liquid tank 1481. In this way, in this example as well, the -based heat exchanger H is provided outside the liquid tank, and this heats the tank liquid in all the liquid tanks, so that the heat exchanger H is similar to the above example. effect can be obtained.

2. In each of the above embodiments, the case where the bottle is gradually heated or cooled with respect to the bottle washing machine and bust riser was explained, but it is not limited to these cases, but it can also be applied to various other devices such as warmers. The same applies to progressive heating or cooling steps.

〔Effect of the invention〕

As described above, according to the present invention, the liquid temperature in a plurality of tanks can be set to a gradual temperature gradient corresponding to various loads.

[Brief explanation of the drawing]

Fig. 1 is a side view showing a part of a bottle washing machine to which a liquid temperature adjustment method according to an embodiment of the present invention is applied, and Fig. 2 is a side view showing a modification of Fig. 1. Riser η-4Wl Romi 1
Boo full of air H1'gh broom-? It is a side view showing a method of adjusting the liquid temperature of Jichi 1cho 6 enemy shield 1hwibafu II-sec ¥ rice. +211, (221', n+, world), partner, circle: liquid tank 1831 s N: heat exchanger (B): container (bottle) Patent applicant Shibuya Kogyo Co., Ltd. I, ",,", °, l\
“;Figure 1Figure 2

Claims (1)

[Claims] In order to gradually heat or cool objects such as containers by the liquid in each tank in the process of continuously conveying the container, the temperature of the liquid in each tank is set to rise or fall in stages. A method for adjusting liquid temperature in a plurality of liquid tanks, characterized in that the liquid in each tank is taken out of the tank, subjected to intensive heat exchange, and then returned to the inside of the tank.