Pasteurisation device with integrated heat pump and method of its production

FIELD: process engineering.

SUBSTANCE: invention relates to pasteurisation of containers filled with liquid. Proposed device comprises heating zone, pasteurisation zone and cooling zone. Note here that each zone may consist of one or several segments incorporating sprinkling devices. To reproduce heat, sprinkling liquid of one or several segments is collected into entrapping containers and fed to another segment, or to the same segment, for heating or cooling. Said device comprises also heat pump communicated with one or several segments of pasteurisation zone or one or several segments of cooling zone via pipelines and feed devices so that portion of heat power of cooling zone segment liquid volume may be forced by said pump to pasteurisation zone segment. Note also that sprinkling device suction side incorporates mixing device or section to mix liquid flow fed by said pump with liquids of the same segment, other segments and/or fresh water.

EFFECT: simple and efficient temperature adjustment.

5 cl, 1 dwg

 

The invention relates to a device and method of pasteurization of fluid-filled containers, such as bottles with drinks or cans of drinks. In this part of the heat transfer is realized due to the fact that between the one or more segments of the pasteurization zone and one or more segments of the cooling zone is provided a heat pump.

Attitudes and ways of pasteurization to make the food stability during storage is known and in wide use in the beverage industry. In these settings in the finished thread or consistently go containers, such as bottles, cans, packages or the like, essentially continuously through the device pasteurization.

These devices and methods of pasteurization is carried out in such a way that for gentle heating and cooling capacity, fluid-filled, transported through increasing respectively decreasing temperarure segments. Between the segmented zone heating and cooling is pasteurization zone, which can also be segmented, and in which the temperature is maintained essentially at a single appropriate high level. DE 4314662 A1, DE 20317441 U1, DE 10042528 A1, DE 199 08035 A1 or EP 0430907 B1 describe such devices and methods of pasteurization. Inside capacity oprys yaytsa or filled above the brim with liquid, to implement heating, cooling or isothermal condition.

The process of pasteurization, respectively sanitary treatment depends at the same time, essentially on temperature and time. As the temperature in closed containers can be raised only limited, the residence time should be increased, so that the device pasteurization has very large dimensions. They have a capacity, when operating according to the destination, a large amount of liquid with the same high intensity. In addition, it is known that the liquid segments of the zone heating and cooling can be directed appropriately to and fro in order to realize the possible re-heat.

The problem of the ideal implementation of the method is now that when the desired regenerative cooling pasteurized and filled containers device pasteurization must be structurally very large, and, however, in the ideal case should be achieved only cooling temperature, which is slightly higher than the temperature of the first segment of heat.

For energy savings and better regulation in DE 69414611 T2 offers full capacity in the area of pasteurization, in normal operation, do not fill above the edges of the through suitable switching and irrigation of the entrained liquid to achieve a flexible and optimal control. Since the introduction of energy into the area of pasteurization falls in the normal operation, it should be assumed that to achieve the same make food stability during storage comparable amount of energy must be added to the zone heating so that the entire device is structurally rather will increase.

In DE 10351689 A1 it is proposed to switch the setting pasteurization with the installation of cooling so that the contents of the containers is pre-heated and sealed containers with a slightly increased temperature enter into the process of pasteurization. Such switching is beneficial to reduce the final temperature at the exit, however, is limited with the opportunity to transfer the amount of heat, since the level of the supplied fluid can not fall in the opposite direction to the content, including, to reduce the strong foaming.

The objective of the invention is to create a structurally improved device of pasteurization, which is economically and energetically has no disadvantages compared to the prior art.

This problem is solved according to the present invention using the device of pasteurization heat treatment of liquids available in sealed containers, which includes the area of heating, the area of pasteurization and cooling zone, and each zone can consist of one or several segments. Containers filled with liquid, corresponding to the assignment mode of operation, is transported through all the segments from the inlet device pasteurization before it's release, and for heating, pasteurization and/or cooling segments, a device irrigation. To re-generate heat irrigating fluid of one or more segments going in catching capacity and this liquid is properly exchanged between the individual segments with the purpose of heating or cooling. Corresponding to the invention the device pasteurization includes the heat pump, connected to a segment of the pasteurization zone or segment of the cooling zone through a pipeline and feed units so that a portion of thermal energy to the fluid volume of the segment of the cooling zone with this heat pump can be translated in the segment area pasteurization.

The form of the device of pasteurization is that with:

A. catching capacity of the segment pasteurization is connected one input unit and one pipeline, and the pipeline leading to the hot side of the heat pump, with which it is in thermal contact, and this pipe is out, by injection the side, in the device of the irrigation segment pasteurization, and

b. catching capacity of the cooling segment are connected to one another, the feed unit and one pipe, and this pipe leads to the cold side of the heat pump, with which it is in thermal contact, and this pipeline goes from there, on the discharge side, the irrigation device of the cooling segment.

Under hot side of the heat pump means the party that provided for the heat and the cold side is the side which is provided for reception of heat.

This direct heating of the part of the irrigation water is a very effective heat input to the segment pasteurization, because on the discharge side is not applied to a heat exchanger. In addition, the regulation specified temperature can be simply implemented by mixing with the appropriate amount of hot water.

One improvement is that on the inlet side of the irrigation device is provided by one mixing device or a part of the mix, along with passing from the heat pump piping is piping fresh water. Thus if, for example, interruption caused by damage, overheating in the area of pasteurization can be prevent the but effective and very simple. In case of small damages shall not be adjusted by throttling the performance of the heat pump or occasionally disable the circulation loop.

Essentially two versions of the switch are appropriate. First, a variant of which is connected through a heat pump and appropriate piping segment of the cooling zone is one segment, which is connected precooperative with one segment of the pasteurization zone. Secondly, variant, which is connected via a heat pump segment of the cooling zone is one segment, which is connected with regenerative one segment of the pasteurization zone. Of course, allowed combinations or possible implementation methods that take into account temporal climatic boundary conditions. One such form of exercise is that more than one segment of the cooling zone through one heat pump and appropriate piping connected to one or more segments of the pasteurization zone, and these segments of the cooling zone can be a regenerative United segments or refrigeration segments without regenerative connection.

The invention also includes a method of pasteurizing liquids, which applies a single device pasteurization according to any of the above forms of Khujand is exercise. One optimized variant is that the fluid that comes from the heat exchanger and flows to a single segment of pasteurization, the maximum has given temperature irrigating fluid corresponding segment, and the ideal way is the temperature at 5-15 below the set temperature. This kind of variant of the method has the advantage that the heat pump can continuously work performance, remaining always the same, and should be added only a relatively small volume flow of hot water. This volume flow is selected as the liquid circulation circuit segment pasteurization and heated in a known manner by means of an external heat exchanger.

The device pasteurization known design, the inlet temperature 12C and outlet temperature of 31.8C, with an initial length of 15 m, due to the use of one heat pump can be shortened by almost 3 m Device pasteurization, corresponding to the invention constructive form, is identical when the inlet temperature even lower temperature at the exit - 30,9C. This could be implemented without increasing the power consumption during the operation.

The drawing shows as an example one device pasteurization and one method of pasteurization.

CX the image may be put at risk in the drawing shows the device 1 pasteurization, with one input of the 2, one output, 3 and many segments 4-11. From left to right, therefore, filed a schematic representation of the vessels are the segment of heat 4, segment heating 5 segments pasteurization 6, 7 and 8, the cooling segment 9 segment 10 and cooling the refrigeration segment 11. Segments 4 and 10, and segments 5 and 9 are connected to each other regenerative so that irrigation water is captured and pump 12 is supplied via the line 13 to respectively different segment and there, through adequate and well-known devices 14 irrigation sprayed. Irrigation water is captured in segments 7 and 8 pasteurization and as the internal circulation circuit in the same segment again sprayed through the device 15 irrigation.

In addition, continuously selected a separate thread 16 and the heat is directed through one heat exchanger 17, and then is sprayed in segments 7 and 8 pasteurization.

The drawing shows a heat pump 18 with one cold side 19 and one hot side 20. Through the heat pump 18 indirectly thermally connected to the segment 11 and cooling segment 6 pasteurization. Collected in the refrigeration segment 11 water is collected and fed to the cold side 19 of the heat pump 18, where it is collected energy, so more cold water flows back into the refrigeration segment 11 and there is orestano sprayed. Thus obtained and having the ability to move a fraction of the energy on the hot side 20 of the heat pump 18 is given to the irrigation water, which through line 21 and pump 22 qualified of catching tank 23 segment 6 pasteurization. On the section 24 of the mixing coming from the heat pump 18 hot return water is mixed properly with a separate stream of hot water from the pipe 25 and/or a separate stream of cold water from the pipe 26.

The list of items

1 Device pasteurization

2 enter

3 Out

4 refrigeration segment

5 refrigeration segment

6 Segment pasteurization

7 Segment pasteurization

8 Segment pasteurization

9 Segment cooling

10 Segment cooling

11 refrigeration segment

12 Pump

13 Pipeline

14 Device irrigation

15 irrigation Device

16 a Separate thread

17, the heat Exchanger

18 Heat pump

19 the Cold side of the heat pump

20 Hot side of the heat pump

21 Pipeline

22 Pump

23 Catching capacity

24 Plot of mixing

25 Pipeline

26 Pipeline

1. The device pasteurization heat treatment of liquids available in sealed containers, including zone heating zone pasteurization and cooling zone, and each zone can consist of one renesola segments, and filled the tank with fluid can be directed through all the segments from the inlet device pasteurization before it's release, and for heating, pasteurization and/or cooling segments provided by the irrigation device, and to re-generate heat irrigating fluid of one or more segments going in catching capacity and then fed to another segment or to the same segment for heating or cooling, and the device pasteurization includes a heat pump connected to the segment area pasteurization and to the segment of the cooling zone or more than one segment area pasteurization and more than one segment of the cooling zone through pipelines and the input units so that a portion of thermal energy to the fluid volume of the segment of the cooling zone with this heat pump has the ability to transfer to a segment of the pasteurization zone, characterized in that on the suction side of the irrigation device is provided for mixing or plot mix that can be mixed stream of fluid coming from the heat pump, with the liquids of the same segment, the other segments and/or fresh water.

2. The device pasteurization according to claim 1, characterized in that
(a) the catching capacity of the segment pasteurization connected to the feed unit and pipes the wire, the pipeline leads to the hot side of the heat pump, with which it is in thermal contact, and this pipe leads from there, on the discharge side, in the device of the irrigation segment pasteurization, and with
b) detecting the capacity of the cooling segment is connected to another input unit and the pipe, and this pipe leads to the cold side of the heat pump, with which it is in thermal contact, and the piping from there, on the discharge side, leads into the irrigation device of the cooling segment, and under hot side of the heat pump means the party that provided for the heat and the cold side is the side which is provided for reception of heat.

3. The device pasteurization according to any paragraph 1 or 2, characterized in that connected through the heat pump and appropriate piping segment of the cooling zone is a segment that precooperative connected to the segment area pasteurization.

4. The device pasteurization according to claim 1 or 2, characterized in that connected through the heat pump segment of the cooling zone is a segment that regenerative connected to the segment area pasteurization.

5. The device pasteurization according to claim 1 or 2, characterized in that the segments of the cooling zone can represent recupe ative United segments or refrigeration segments without regenerative connection.



 

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