CN114403710A - Method for operating a liquid heating device - Google Patents
Method for operating a liquid heating device Download PDFInfo
- Publication number
- CN114403710A CN114403710A CN202111493569.2A CN202111493569A CN114403710A CN 114403710 A CN114403710 A CN 114403710A CN 202111493569 A CN202111493569 A CN 202111493569A CN 114403710 A CN114403710 A CN 114403710A
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- Prior art keywords
- liquid
- module
- heating
- temperature
- volume
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- 239000007788 liquid Substances 0.000 title claims abstract description 147
- 238000010438 heat treatment Methods 0.000 title claims abstract description 131
- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 16
- 239000002918 waste heat Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 17
- 235000013350 formula milk Nutrition 0.000 description 14
- 239000000843 powder Substances 0.000 description 8
- 239000008213 purified water Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 4
- 235000008452 baby food Nutrition 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 230000036760 body temperature Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241001135265 Cronobacter sakazakii Species 0.000 description 1
- 241000607142 Salmonella Species 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 235000008476 powdered milk Nutrition 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J36/00—Parts, details or accessories of cooking-vessels
- A47J36/24—Warming devices
- A47J36/2411—Baby bottle warmers; Devices for warming baby food in jars
- A47J36/2433—Baby bottle warmers; Devices for warming baby food in jars with electrical heating means
Abstract
The present invention relates to a method of operating a liquid heating apparatus. The liquid heating equipment comprises a heating module, a power module and a reversing valve, wherein the power module distributes liquid to the heating module, the water outlet side of the heating module is communicated with the water inlet of the reversing valve, and the reversing valve is provided with a first water outlet and a second water outlet. The operation method comprises the following steps: obtaining a predetermined volume of a desired liquid; acquiring the temperature of liquid at the upstream of the heating module; selecting a first volume and a first temperature of the first liquid, a second volume and a second temperature of the second liquid, based on the predetermined volume and the temperature of the liquid upstream of the heating module, the first volume and the second volume together providing the predetermined volume; the heating module heats the first liquid to a first temperature, and the first water outlet outputs the heated first liquid; closing the heating module, and enabling the third liquid to absorb the waste heat of the heating module and output the waste heat from the second water outlet; the second liquid passes through the cooled heating module to output the second liquid from the first water outlet.
Description
Technical Field
The present invention relates to a method and apparatus for heating a predetermined volume of water to a desired temperature, for example warm water for use in preparing infant formula or other infant food.
Background
Current manufacturing technologies make it infeasible to produce and store sterile infant formula powder that is subsequently used to make infant milk. The World Health Organization (WHO) guides the preparation of infant formula ("safe preparation, storage and handling of infant formula powder: instructions", WHO, 2007), therefore suggests to reconstitute infant formula powder by mixing it with water at a temperature greater than 70 ℃ in order to sterilize infant formula powder that may be contaminated with harmful bacteria such as enterobacter sakazakii and salmonella.
Current infant formula powders or infant food are typically reconstituted by using water that is recently boiled in a kettle to sterilize the infant formula powder, and then allowing the liquid to cool to a temperature suitable for administering to the infant-e.g., typically about body temperature or a few degrees higher. However, this is a time consuming operation and it may be difficult to accurately judge the correct temperature.
Even if the infant formula is not sterilized prior to being reconstituted with very hot water (e.g., >70 ℃), it is still desirable to prepare a formula such that the milk has a final temperature of about body temperature (e.g., 37 ℃) when administered to an infant. In practice, this usually means that the preparation must be cooled to the desired final temperature after mixing warm or hot water with the formulation. There is no reliable way to reconstitute the formula powder immediately at the correct temperature. Although cold water may be added to the preparation to speed up the cooling process, there is a risk that the cold water is not sterile and that this can affect the correct dosage and final temperature.
There remains a need for an improved method to dispense controlled volumes of warm water at controlled temperatures for reconstitution of infant formula, infant food, and other purposes.
Disclosure of Invention
Based on this, the invention aims to provide an operation method of a liquid heating device, which comprises the steps of outputting high-temperature water to sterilize milk powder, outputting low-temperature water to reduce the temperature of the high-temperature water, and mixing to obtain the infant formula milk with the temperature of 36-42 ℃ suitable for infants.
The operation method of the liquid heating equipment comprises a heating module, a power module and a reversing valve, wherein the power module distributes liquid to flow to the heating module, the water outlet side of the heating module is communicated with the water inlet of the reversing valve, and the reversing valve is provided with a first water outlet and a second water outlet; the operation method comprises the following steps: obtaining a predetermined volume of a desired liquid; obtaining the temperature of the liquid upstream of the heating module; selecting a first volume and a first temperature of a first liquid, a second volume and a second temperature of a second liquid, based on the predetermined volume, a temperature of the liquid upstream of the heating module, the first volume and the second volume together providing the predetermined volume; the power module distributes the first liquid to flow to the heating module, the heating module is started and heats the first liquid to the first temperature, and the first water outlet outputs the heated first liquid; the power module distributes third liquid to flow to the heating module, the heating module is closed, and the second water outlet outputs the third liquid absorbing the waste heat of the heating module; the power module distributes the second liquid to flow to the heating module, the second liquid passes through the cooled heating module, and the first water outlet outputs the second liquid.
Further, the liquid heating equipment further comprises an input module and a control module, wherein the input module is used for inputting the preset volume of the required liquid, and the control module is electrically connected with the heating module, the power module, the reversing valve and the input module respectively.
Further, the liquid heating device further comprises a temperature detection module and a control module, wherein the temperature detection module is used for detecting the temperature of the liquid heated by the heating module, and the control module is respectively electrically connected with the heating module, the power module, the reversing valve and the temperature detection module; the power module distributes fourth liquid to flow to the heating module, the heating module heats the fourth liquid according to the preheating temperature, the temperature detection module measures the temperature of the fourth liquid after heating, and the difference between the measured temperature of the temperature detection module and the preheating temperature is the temperature of the liquid at the upstream of the heating module.
Further, the heating time of the fourth liquid is less than the heating time of the first liquid, and the heating temperature of the fourth liquid is less than or equal to the heating temperature of the first liquid.
Further, according to the preset volume and the temperature of the liquid on the upstream of the heating module, the water outlet flow rate and the water outlet time of the power module and the heating temperature and the heating time of the heating module are set so as to determine the first volume, the first temperature, the second volume and the second temperature.
Further, the average temperature of the first liquid and the second liquid is greater than or equal to 30 ℃, and the average temperature of the first liquid and the second liquid is less than or equal to 50 ℃.
Further, the first volume is less than the second volume, and the first temperature is greater than the second temperature.
Furthermore, the liquid heating equipment also comprises a first water tank, the water inlet end of the power module is connected with the first water tank, the water outlet end of the power module is connected with the heating module, and the second water outlet of the reversing valve is connected with the first water tank.
Further, the liquid heating equipment further comprises a second water tank and a filter element, wherein the filter element is arranged between the water outlet side of the second water tank and the water inlet side of the first water tank.
Further, a flow limiting valve is arranged between the power module and the heating module.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic diagram of a water circuit connection of a liquid heating apparatus according to an embodiment;
FIG. 2 is a schematic diagram of an electrically controlled connection of a liquid heating apparatus according to an embodiment;
reference numerals:
1. a first water tank; 2. a second water tank; 3. a filter element; 4. a power module; 5. a heating module; 6. a diverter valve; 7. a flow-limiting valve; 8. a temperature detection module; 9. an input module; 10. and a control module.
Detailed Description
A liquid heating device, referring to fig. 1 and 2, comprises a first water tank 1, a second water tank 2, a filter element 3, a power module 4, a heating module 5, a reversing valve 6, a flow limiting valve 7, a temperature detection module 8, an input module 9 and a control module 10. The first water tank 1 is used for containing purified water, the second water tank 2 is used for containing raw water, the filter element 3 is arranged between the water outlet side of the second water tank 2 and the water inlet side of the first water tank 1, the raw water in the second water tank 2 is filtered by the filter element 3 to form purified water, and the purified water is stored in the first water tank 1. The water inlet end of the power module 4 is connected with the first water tank 1, the power module 4 provides power for the flow of purified water, and in the embodiment, the power module 4 is a pump. The water inlet end of the heating module 5 is connected with the water outlet end of the power module 4, and the heating module 5 is used for heating purified water. The water inlet of the reversing valve 6 is connected with the water outlet end of the heating module 5, the reversing valve 6 is provided with a first water outlet and a second water outlet, the first water outlet of the reversing valve 6 is connected with the outlet of the liquid heating equipment, and the second water outlet of the reversing valve 6 is connected with the first water tank 1. The flow limiting valve 7 is arranged between the power module 4 and the heating module 5. The temperature detection module 8 is arranged on the water outlet side of the heating module 5, and the temperature detection module 8 is used for detecting the temperature of purified water coming out of the heating module 5. The input module 9 is used for inputting the required predetermined volume of liquid, and the input module 9 can be a display screen, a physical button and the like. The control module 10 is respectively electrically connected with the power module 4, the heating module 5, the reversing valve 6, the temperature detection module 8 and the input module 9.
The operation method of the liquid heating device comprises the following steps:
s1, acquiring the preset volume of the required liquid;
s2, acquiring the temperature of the liquid upstream of the heating module 5;
s3, selecting a first volume and a first temperature of the first liquid, a second volume and a second temperature of the second liquid, based on the predetermined volume and the temperature of the liquid upstream of the heating module 5, the first volume and the second volume together providing the predetermined volume;
s4, the power module 4 distributes the first liquid to flow to the heating module 5, the heating module 5 is started and heats the first liquid to a first temperature, and the first water outlet outputs the heated first liquid;
s5, the power module 4 distributes the third liquid to flow to the heating module 5, the heating module 5 is closed, the third liquid absorbs the waste heat of the heating module 5, and the second water outlet outputs the third liquid absorbing the waste heat;
and S6, the power module 4 distributes the second liquid to flow to the heating module 5, the second liquid passes through the cooled heating module 5, and the second liquid is output from the first water outlet.
In step S1, the user selects a desired volume of liquid according to the amount of powdered milk, and then inputs the desired volume of liquid to the control module 10 through the input module 9. For example, the input module 9 is a touch display screen, the touch display screen has a plurality of virtual keys for inputting 90ml, 120ml, 150ml, 180ml, 210ml, 240ml, 270ml and 300ml, the user may touch the virtual keys of the corresponding volume, and the control module 10 receives the predetermined volume of the required liquid.
In step S2, the control module 10 controls the power module 4 to operate, the power module 4 distributes the fourth liquid to flow to the heating module 5, the control module 10 controls the heating module 5 to heat the fourth liquid according to the preheating temperature, the temperature detection module 8 measures the heated temperature of the fourth liquid and feeds the measured temperature back to the control module 10, the control module 10 makes a difference between the measured temperature of the temperature detection module 8 and the preheating temperature of the heating module 5, and the obtained difference is the temperature of the liquid upstream of the heating module 5.
In addition, the heating time of the fourth liquid is less than that of the first liquid, and the heating temperature of the fourth liquid is less than or equal to that of the first liquid. With this design, temperature variations affecting the first liquid can be avoided.
In steps S3 to S6, the water outflow flow rate and the water outflow time of the power module 4, the heating temperature and the heating time of the heating module 5 are set according to the predetermined volume, the temperature of the liquid upstream of the heating module 5, and thereby the first volume, the first temperature, the second volume, and the second temperature are determined. And the first volume is less than the second volume, the first temperature is greater than the second temperature, after the first liquid and the second liquid are mixed, the average temperature of the first liquid and the second liquid is greater than or equal to 30 ℃, the average temperature of the first liquid and the second liquid is less than or equal to 50 ℃, and preferably, the average temperature of the first liquid and the second liquid is between 35 ℃ and 42 ℃.
In the following example, it is assumed that the temperature of the liquid at the upstream of the heating module 5 is 5 ℃ calculated by the control module 10, the flow rate of the outlet water is constantly 3ml/s when the power module 4 outputs the first liquid and the second liquid, and the heating temperature is constantly 95 ℃ when the heating module 5 heats the first liquid by the control module 10. The control module 10 sets the water outlet time and heating time when the first liquid is output and the water outlet time and heating time when the second liquid is output according to the following table, according to the received preset volume and the upstream liquid temperature, the outlet of the liquid heating device can output the first liquid at 70-80 ℃, and the average temperature of the mixed first liquid and second liquid reaches 35-42 ℃.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. A method of operating a liquid heating apparatus,
the liquid heating equipment comprises a heating module (5), a power module (4) and a reversing valve (6), wherein the power module (4) distributes liquid to flow to the heating module (5), the water outlet side of the heating module (5) is communicated with the water inlet of the reversing valve (6), and the reversing valve (6) is provided with a first water outlet and a second water outlet;
the operation method comprises the following steps:
obtaining a predetermined volume of a desired liquid;
-acquiring the temperature of the liquid upstream of the heating module (5);
-selecting a first volume and a first temperature of a first liquid, a second volume and a second temperature of a second liquid, depending on the predetermined volume, the temperature of the liquid upstream of the heating module (5), the first volume and the second volume together providing the predetermined volume;
the power module (4) distributes the first liquid to flow to the heating module (5), the heating module (5) is started and heats the first liquid to the first temperature, and the first water outlet outputs the heated first liquid;
the power module (4) distributes a third liquid to flow to the heating module (5), the heating module (5) is closed, and the second water outlet outputs the third liquid absorbing the waste heat of the heating module (5);
the power module (4) distributes the second liquid to the heating module (5), the second liquid passes through the cooled heating module (5), and the first water outlet outputs the second liquid.
2. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: the liquid heating equipment further comprises an input module (9) and a control module (10), wherein the input module (9) is used for inputting the preset volume of the required liquid, and the control module (10) is electrically connected with the heating module (5), the power module (4), the reversing valve (6) and the input module (9) respectively.
3. A method of operating a liquid heating apparatus as claimed in claim 1, wherein:
the liquid heating equipment further comprises a temperature detection module (8) and a control module (10), wherein the temperature detection module (8) is used for detecting the temperature of the liquid heated by the heating module (5), and the control module (10) is respectively electrically connected with the heating module (5), the power module (4), the reversing valve (6) and the temperature detection module (8);
the power module (4) distributes a fourth liquid to flow to the heating module (5), the heating module (5) heats the fourth liquid according to the preheating temperature, the temperature detection module (8) measures the temperature of the fourth liquid after heating, and the difference between the measured temperature of the temperature detection module (8) and the preheating temperature is the temperature of the liquid at the upstream of the heating module (5).
4. A method of operating a liquid heating apparatus as claimed in claim 3, wherein: the heating time of the fourth liquid is less than that of the first liquid, and the heating temperature of the fourth liquid is less than or equal to that of the first liquid.
5. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: setting the water outlet flow rate and water outlet time of the power module (4), the heating temperature and heating time of the heating module (5) according to the preset volume and the temperature of the liquid upstream of the heating module (5) to determine the first volume, the first temperature, the second volume and the second temperature.
6. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: the average temperature of the first liquid and the second liquid is greater than or equal to 30 ℃, and the average temperature of the first liquid and the second liquid is less than or equal to 50 ℃.
7. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: the first volume is less than the second volume and the first temperature is greater than the second temperature.
8. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: the liquid heating equipment further comprises a first water tank (1), the water inlet end of the power module (4) is connected with the first water tank (1), the water outlet end of the power module (4) is connected with the heating module (5), and the second water outlet of the reversing valve (6) is connected with the first water tank (1).
9. A method of operating a liquid heating apparatus as claimed in claim 8, wherein: the liquid heating equipment further comprises a second water tank (2) and a filter element (3), wherein the filter element (3) is arranged between the water outlet side of the second water tank (2) and the water inlet side of the first water tank (1).
10. A method of operating a liquid heating apparatus as claimed in claim 1, wherein: a flow limiting valve (7) is arranged between the power module (4) and the heating module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111493569.2A CN114403710A (en) | 2021-12-08 | 2021-12-08 | Method for operating a liquid heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111493569.2A CN114403710A (en) | 2021-12-08 | 2021-12-08 | Method for operating a liquid heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114403710A true CN114403710A (en) | 2022-04-29 |
Family
ID=81265592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111493569.2A Pending CN114403710A (en) | 2021-12-08 | 2021-12-08 | Method for operating a liquid heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114403710A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743438A (en) * | 2007-05-16 | 2010-06-16 | 奥特控制有限公司 | electrical appliances |
| CN104955366A (en) * | 2013-01-24 | 2015-09-30 | 施特里克斯有限公司 | Liquid heating apparatus and operating methods |
| GB202016714D0 (en) * | 2020-10-21 | 2020-12-02 | Otter Controls Ltd | Liquid heating and dispensing apparatus and method |
-
2021
- 2021-12-08 CN CN202111493569.2A patent/CN114403710A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743438A (en) * | 2007-05-16 | 2010-06-16 | 奥特控制有限公司 | electrical appliances |
| CN104955366A (en) * | 2013-01-24 | 2015-09-30 | 施特里克斯有限公司 | Liquid heating apparatus and operating methods |
| GB202016714D0 (en) * | 2020-10-21 | 2020-12-02 | Otter Controls Ltd | Liquid heating and dispensing apparatus and method |
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Application publication date: 20220429 |
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