CN112167975A - Beverage heating, cooling and heat preservation device and method - Google Patents

Abstract

The invention relates to the technical field of liquid temperature changing devices, in particular to a device and a method for heating, cooling and insulating drinks, wherein the device comprises a kettle body, a cover body and a heating device, the kettle body is arranged on the heating device, and the cover body is detachably connected with the kettle body; the kettle body comprises a shell and an inner container, the shell and the inner container are coaxially arranged, a closed vacuum inner cavity is arranged between the shell and the inner container, and liquid working media are filled in the vacuum inner cavity. The invention adopts a phase change heat transfer mode: when the heating device works, the liquid working medium is changed into steam from liquid state, the steam is condensed into liquid when meeting the condensation on the shell and the inner container wall, latent heat of vaporization is released, and the beverage is rapidly heated; when the heating device stops working, the heat in the beverage can be reversely transmitted to the external environment through a phase change heat transfer mode, and the beverage is rapidly cooled; the phase change heat transfer is stopped, and the vacuum inner cavity blocks the heat transmission path of the beverage, so that the heat preservation of the beverage is effectively realized; and the phase change heat transfer has good isothermal property, the beverage is heated uniformly, and the phenomenon of overheat and pan sticking can be effectively prevented.

Description

Beverage heating, cooling and heat preservation device and method

Technical Field

The invention relates to the technical field of liquid temperature changing devices, in particular to a beverage heating, cooling and heat preservation device and method.

Background

In daily life, most people are used to drink beverages such as water, milk and coffee after heating, especially in cold regions or in seasons with low temperature. At present, adopt devices such as heating kettle or microwave oven to heat the beverage mostly on the market, but this part heating device function is mostly more single, can only heat the beverage, can't cool off fast the beverage, and the beverage after the heating need wait for the long time can only be dropped to suitable temperature and drinks, gives people the life and brings a great deal of inconvenience. Especially for infants whose drinking time cannot be determined, if the beverage cannot be quickly heated or cooled to a proper drinking temperature, the normal feeding of the infants is influenced, and the beverage can become cool when not being drunk in time and kept warm after being heated, and the nutrient components in the beverage can be greatly lost by repeated heating.

Chinese patent CN202761020U discloses a vacuum heat-storage double-insulation dry-heating-preventing electric kettle, which comprises a kettle body, wherein an electric heating device is arranged at the bottom of the kettle body. The kettle body consists of a shell and an inner container arranged in the shell, a phase-change heat storage material is filled between the shell and the inner container to form a heat storage layer, the phase-change temperature of the phase-change heat storage material is 80 ℃, 85 ℃, 90 ℃ and 95 ℃, and the heat storage layer is tightly attached to the inner container; a vacuum layer is arranged between the heat storage layer and the shell, and the vacuum layer is a vacuumized closed cavity; the water outlet is positioned in the middle of the kettle body and is communicated with the inner container; the electric heating device comprises a heater and an anti-dry heating temperature controller, wherein the anti-dry heating temperature controller is a normally closed type and is connected in series in a loop of the heater, and the heater is in direct contact with the inner container. According to the scheme, the inner container is wrapped by the heat storage layer made of the phase-change heat storage material, and the heat storage layer is wrapped by the vacuum layer, so that the heat storage layer is free from heat loss, long in heat preservation time and good in effect. However, the above scheme can not cool the beverage, the arrangement of the vacuum layer can obstruct the dissipation of heat, and the device only relies on the metal heat conduction of the bottom area to heat the beverage in the electric heating process, and the heating is slow and uneven.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a device and a method for heating, cooling and insulating drinks, which can realize efficient heating, rapid cooling and effective insulation.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a beverage heating, cooling and heat preservation device, which comprises a kettle body, a cover body and a heating device, wherein the kettle body is arranged on the heating device, and the cover body is detachably connected with the kettle body; the kettle is characterized in that the kettle body comprises a shell and an inner container, the shell and the inner container are coaxially arranged, a closed vacuum inner cavity is arranged between the shell and the inner container, and liquid working media capable of generating gas-liquid conversion along with temperature change are filled in the vacuum inner cavity.

The invention relates to a beverage heating, cooling and heat preservation device, wherein a beverage is arranged in a kettle body: when the heating device works, the liquid working medium changes phase from liquid to steam, the steam is condensed into liquid when meeting the condensation on the shell and the inner container wall, and latent heat of vaporization is released; after the heating device stops working, the heat in the beverage can be reversely transmitted to the external environment through a phase change heat transfer mode, so that the rapid cooling and cooling of the beverage are realized; when the temperature of the drink is reduced to the starting temperature, the phase change heat transfer is stopped, the vacuum inner cavity blocks the heat transmission path of the drink, and the heat preservation of the drink is effectively realized. The invention adopts a phase change heat transfer mode: the heat conductivity of the beverage is thousands of times of that of common metal, so that the beverage can be rapidly heated; the heating device has good isothermal property, the beverage is heated uniformly, and the phenomenon that liquid contacting with a heating surface is overheated and sticks to a pot can be effectively prevented.

Furthermore, the vacuum inner cavity comprises a first inner cavity and a second inner cavity which are communicated, the first inner cavity is arranged between the side wall of the shell and the side wall of the liner, the second inner cavity is arranged between the bottom wall of the shell and the bottom wall of the liner, and the liquid working medium is filled in the second inner cavity or the first inner cavity and the second inner cavity.

Further, the liquid working medium is selected from one or a combination of two or more of distilled water, ethanol, liquid ammonia and a refrigerant.

Further, a handle is connected to the side wall of the kettle body, and the handle is of a heat insulation structure.

Furthermore, a pot opening is further formed in the side portion of the pot body, and the handle and the pot opening are symmetrical with respect to a central axis of the pot body.

Further, the cover body is of a heat preservation structure.

Furthermore, a temperature sensor is arranged at the bottom of the inner side of the kettle body, the temperature sensor and the heating device are both connected to a controller, and the input end of the controller is connected with an input module.

The invention also provides a beverage heating, cooling and heat preservation method, which comprises the following steps:

heating process: when the heating temperature reaches or exceeds the set starting temperature, the liquid working medium is heated to change the phase from liquid to steam, the steam moves upwards under the action of internal pressure, the shell and the inner container wall meet the condensation and are condensed into liquid to release latent heat of vaporization, and the condensed liquid working medium flows back to the bottom of the vacuum inner cavity along the wall surface of the vacuum inner cavity under the action of gravity; in the process of continuously evaporating and condensing the liquid working medium, the heat of the liquid working medium is transferred to the beverage to be heated;

and (3) cooling: when the beverage is heated to the set temperature, the heating device stops working, and at the moment, because the temperature of the beverage is higher than the ambient temperature, the heat of the beverage can be dissipated from the wall surface of the vacuum cavity in a phase-change heat transfer mode, so that the rapid cooling and cooling of the beverage are realized;

and (3) heat preservation: when the temperature of the beverage is cooled to the starting temperature, all steam in the vacuum inner cavity is condensed into liquid working medium to flow back to the bottom of the vacuum inner cavity, and the phase change heat transfer is stopped; the vacuum inner cavity is in a vacuum state, so that the transmission path of the heat of the drink is blocked, and the heat preservation of the drink is realized.

The beverage heating, cooling and heat preservation method adopts a phase change heat transfer mode, can realize rapid heating and rapid cooling of the beverage, can effectively preserve heat of the beverage when the beverage is cooled to the starting temperature, has good isothermal characteristic in the phase change heat transfer, is uniformly heated, and can effectively prevent the phenomenon of overheating and pan sticking.

Preferably, the starting temperature is controlled by the filling amount of the liquid working medium, and the starting temperature is set according to the appropriate cooling temperature required by different drinks.

Preferably, in the cooling process, the heat preservation cover can be opened, and the kettle body can be placed in cold water.

Compared with the prior art, the invention has the beneficial effects that:

according to the beverage heating, cooling and heat preservation device and method, the rapid heating and rapid cooling of the beverage can be realized by adopting a phase-change heat transfer mode, and when the beverage is cooled to the starting temperature, the beverage can be effectively preserved; and the phase change heat transfer has good isothermal property, the beverage is heated uniformly, and the phenomenon of overheat and pan sticking can be effectively prevented.

Drawings

FIG. 1 is a schematic view of a beverage heating, cooling and warming device;

FIG. 2 is a schematic diagram of a phase change cycle of a liquid working medium in a vacuum chamber;

in the drawings: 1-a pot body; 11-a housing; 12-inner container; 2-a cover body; 3-a heating device; 4-vacuum cavity; 41-a first lumen; 42-a second lumen; 5-a handle; 6-pot mouth; 7-liquid working medium.

Detailed Description

The present invention will be further described with reference to the following embodiments. Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Example one

Fig. 1 to 2 show an embodiment of a beverage heating, cooling and heat preserving device of the present invention, which provides a beverage heating, cooling and heat preserving device, comprising a pot body 1, a cover body 2 and a heating device 3, wherein the pot body 1 is arranged on the heating device 3, and the cover body 2 is detachably connected with the pot body 1; the kettle body 1 comprises a shell 11 and an inner container 12, the shell 11 and the inner container 12 are coaxially arranged, a closed vacuum inner cavity 4 is arranged between the shell 11 and the inner container 12, and liquid working media capable of generating gas-liquid conversion along with temperature change are filled in the vacuum inner cavity 4.

In the embodiment, the beverage is placed in the kettle body 1: when the heating device 3 works, the liquid working medium changes phase from liquid to steam, the steam is condensed into liquid when meeting the condensation on the wall surfaces of the shell 11 and the inner container 12, and latent heat of vaporization is released; after the heating device 3 stops working, the heat in the beverage can be reversely transmitted to the external environment through a phase-change heat transfer mode, so that the rapid cooling and cooling of the beverage are realized; when the temperature of the drink is reduced to the starting temperature, the phase change heat transfer is stopped, the vacuum inner cavity 4 blocks the heat transmission path of the drink, and the heat preservation of the drink is effectively realized. The invention adopts a phase-change heat transfer mode, the heat required by heating the beverage and the heat dissipated by cooling are transferred in the phase-change heat transfer mode, the heat conductivity of the beverage is thousands times that of common metal, and the rapid heating and the rapid cooling of the beverage can be realized; the phase-change heat transfer mode has good isothermal property, the beverage is heated uniformly, and the phenomenon that liquid contacting with a heating surface is overheated and sticks to a pot can be effectively prevented.

In one embodiment, the kettle body 1 and the heating device 3 can be provided as a single structure or as separate structures. The heating device 3 may adopt an electric heating mode or an electromagnetic heating mode. The heat generated by the heating device 3 provides heat for the phase change of the liquid working medium on one hand, and on the other hand, the heat can also be directly used for heating the drink in the inner container 12.

In one embodiment, the vacuum cavity 4 includes a first cavity 41 and a second cavity 42 that are disposed in communication, the first cavity 41 is disposed between the sidewall of the housing 11 and the sidewall of the inner container 12, the second cavity 42 is disposed between the bottom wall of the housing 11 and the bottom wall of the inner container 12, and the liquid working medium is poured into the second cavity 42 or the first cavity 41 and the second cavity 42. Therefore, the side wall of the inner container 12 and the bottom wall of the inner container 12 can be used as heat transfer surfaces, the heating area of the drink in the kettle is increased, and the effects of uniform, rapid heating and rapid cooling of the drink are achieved.

In this embodiment, the liquid working medium may be filled only in the second inner cavity 42, or in the second inner cavity 42 and the first inner cavity 41, and the filling amount of the liquid working medium determines the starting temperature of the phase change heat transfer, and also determines the appropriate temperature and the heat preservation temperature to which the beverage needs to be cooled in the cooling process. When the liquid working medium is only filled into the second inner cavity 42, the liquid level of the liquid working medium is in contact with the bottom wall of the inner container 12, so that the first inner cavity 41 is completely in a vacuum state after the phase change heat transfer is stopped, the heat preservation area of the beverage can be effectively increased, the long-time heat preservation of the beverage is realized, and a vacuum layer formed in the second inner cavity 42 in the cooling process can be prevented from blocking heat transfer; at this time, on the premise of ensuring the contact between the liquid level of the liquid working medium and the bottom wall of the inner container 12, the thickness of the second inner cavity 42 can be adjusted according to the filling amount of the liquid working medium. When the liquid working medium is poured into the first inner cavity 41 and the second inner cavity 42, the thicknesses of the first inner cavity 41 and the second inner cavity 42 can be set to be approximately equal, and the structural symmetry is ensured. Therefore, the pouring volume of the liquid working medium can be adaptively adjusted according to different types of beverages and different optimal drinking temperatures, different starting temperatures can be set by controlling the pouring volume of the liquid working medium, and therefore the liquid working medium is suitable for suitable cooling temperatures required by different beverages and has strong adaptability and universality. In addition, in this embodiment, the vacuum cavity 4 surrounds the whole casing 11 and the whole inner container 12, and in the heating and cooling processes, the phase change heat transfer occurs in the whole vacuum cavity 4 and surrounds the periphery of the inner container 12, so as to realize the three-dimensional surrounding heating and the three-dimensional surrounding cooling, and realize the uniform heating and the rapid cooling.

In one embodiment, the liquid working medium is selected from one or a combination of two or more of distilled water, ethanol, liquid ammonia and a refrigerant. The liquid working medium is filled in the vacuum cavity 4, the boiling point of the liquid working medium is lower than that of the liquid working medium in the normal pressure environment under the vacuum environment, and the starting temperature of phase change heat transfer is lower. It should be noted that the liquid working medium of the present invention is not limited to the above listed types, and other liquid working media capable of performing gas-liquid conversion with temperature change are all suitable for the present invention.

In one embodiment, the side wall of the kettle body 1 is connected with a handle 5, and the handle 5 is of a heat insulation structure. Providing the handle 5 as a heat insulating structure prevents the user from being burned. In addition, in order to achieve the anti-scalding effect, the outer wall of the housing 11 may be provided with a heat insulating sheet at a position opposite to the handle 5 to prevent the user's hand from directly contacting the outer wall surface of the housing 11.

In one embodiment, the side part of the kettle body 1 is also provided with a kettle opening 6, and the handle 5 and the kettle opening 6 are symmetrical about the central axis of the kettle body 1. Like the structure of the existing kettle, the kettle mouth 6 is used for guiding the beverage in the kettle to flow out, so as to prevent the leakage in the process of pouring the beverage. The position of the handle 5 and spout 6 is preferably set for ease of operation and is not intended as a limitation of the present invention.

In one embodiment, the cover 2 is a thermal insulation structure. During heating and heat preservation, the cover body 2 can be covered to prevent heat loss; when cooling, the cover 2 can be opened to increase the heat dissipation speed. Specifically, the cover body 2 and the kettle body 1 can be connected in a detachable connection mode which can complete the operation of opening and closing the cover by clamping, sleeving, hinging, rotating connection and the like. In addition, the cover body 2 is preferably provided with a heat insulating structure to prevent heat loss, and is not a limiting provision of the present invention.

In one embodiment, a temperature sensor is arranged at the bottom of the inner side of the kettle body 1, the temperature sensor and the heating device 3 are both connected to a controller, and the input end of the controller is connected with an input module. The temperature sensor monitors the temperature of the drink in the kettle body 1 in real time, and when the temperature of the drink reaches a set temperature value, the controller controls the heating device 3 to stop working. The input module can be used for inputting set temperature values, and the operation is simple and convenient. The embodiment can also be connected with a display module at the output end of the controller for displaying the real-time temperature and the set temperature value. Of course, it is also possible to implement the solution of the present invention by integrating the input module and the display module into a touch display screen, which has both display and input functions.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features. In addition, the above embodiments are intended to heat beverages, and the present invention is not limited thereto, and the present invention is also applicable to heating, cooling and heat preservation of other liquids than beverages.

Example two

The embodiment is an embodiment of an application method of the beverage heating, cooling and heat preservation device in the first embodiment, and the application method comprises the following steps:

heating process: when the heating temperature reaches or exceeds the set starting temperature, the liquid working medium is heated to change the phase from the liquid state into steam, the steam moves upwards under the action of internal pressure, the liquid is condensed on the wall surfaces of the shell 11 and the inner container 12 when meeting the condensation, latent heat of vaporization is released, and the condensed liquid working medium flows back to the bottom of the vacuum inner cavity 4 along the wall surface of the vacuum inner cavity 4 under the action of gravity; the liquid working medium which flows back is heated and then is changed into steam, moves upwards along the inner cavity under the action of internal pressure, and is condensed into liquid to flow back to the bottom of the vacuum inner cavity 4 after being cooled; the process of evaporation and condensation of the liquid working medium inside the vacuum cavity 4 is repeated continuously to form a cycle, as shown in fig. 2. In the process of continuously evaporating and condensing the liquid working medium, the heat is continuously transferred to the beverage to be heated, so that the rapid heating of the beverage is realized.

And (3) cooling: when the beverage is heated to the set temperature, the heating device 3 stops working, and at the moment, because the temperature of the beverage is higher than the ambient temperature, the heat of the beverage can be dissipated from the wall surface of the vacuum inner cavity 4 in a phase change heat transfer mode, so that the rapid cooling and cooling of the beverage are realized.

And (3) heat preservation: when the temperature of the beverage is cooled to the starting temperature, all steam in the vacuum inner cavity 4 is condensed into liquid working medium and flows back to the bottom of the vacuum inner cavity 4, and the phase change heat transfer is stopped; the vacuum inner cavity 4 is in a vacuum state, so that the transmission path of the heat of the drink is blocked, and the heat preservation of the drink is realized. In the heat preservation process, a heat preservation cover needs to be covered to prevent heat loss.

Wherein, the starting temperature is controlled by the filling amount of the liquid working medium, and the starting temperature is set according to the suitable cooling temperature required by different drinks. If the milk is heated, the optimum drinking temperature of the milk is between 35 and 39 ℃, the starting temperature of phase change heat transfer can be determined according to the drinking temperature, and the pouring amount of the liquid working medium can be obtained through calculation. In the cooling process, the heat preservation cover can be opened, and the kettle body 1 can also be placed in cold water, so that the heat loss is accelerated, and the cooling speed is increased.

Through the steps, the rapid and uniform heating and the rapid cooling of the drink are realized by adopting a phase change heat transfer mode; when the liquid working medium flows back to the bottom of the vacuum inner cavity 4, the vacuum inner cavity 4 blocks the transmission path of the heat of the drink, and the heat preservation of the drink can be realized.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A beverage heating, cooling and heat preservation device comprises a kettle body (1), a cover body (2) and a heating device (3), wherein the kettle body (1) is arranged on the heating device (3), and the cover body (2) is detachably connected with the kettle body (1); the kettle is characterized in that the kettle body (1) comprises a shell (11) and an inner container (12), the shell (11) and the inner container (12) are coaxially arranged, a closed vacuum inner cavity (4) is arranged between the shell (11) and the inner container (12), and liquid working media capable of generating gas-liquid conversion along with temperature change are filled in the vacuum inner cavity (4).

2. The beverage heating, cooling and heat preserving device according to claim 1, wherein the vacuum cavity (4) comprises a first cavity (41) and a second cavity (42) which are communicated with each other, the first cavity (41) is arranged between the side wall of the outer shell (11) and the side wall of the inner container (12), the second cavity (42) is arranged between the bottom wall of the outer shell (11) and the bottom wall of the inner container (12), and the liquid working medium is poured into the second cavity (42) or the first cavity (41) and the second cavity (42).

3. The beverage heating, cooling and warming device according to claim 1, wherein the liquid working medium is selected from one or a combination of two or more of distilled water, ethanol, liquid ammonia and refrigerant.

4. The beverage heating, cooling and warming device according to claim 1, wherein a handle (5) is connected to a side wall of the kettle body (1), and the handle (5) is of a heat insulation structure.

5. The beverage heating, cooling and warming device as claimed in claim 4, wherein a spout (6) is further provided on the side of the kettle body (1), and the handle (5) and the spout (6) are symmetrical with respect to the central axis of the kettle body (1).

6. The beverage heating, cooling and warming device according to claim 1, wherein the cover body (2) is a warming structure.

7. The beverage heating, cooling and warming device according to any one of claims 1 to 6, wherein a temperature sensor is provided at the bottom of the inner side of the kettle body (1), the temperature sensor and the heating device (3) are both connected to a controller, and the input end of the controller is connected to an input module.

8. A method for heating, cooling and preserving heat of drinks is characterized by comprising the following steps:

heating process: the heating device (3) works, when the heating temperature reaches or exceeds the set starting temperature, the liquid working medium is heated to change phase from liquid to steam, the steam moves upwards under the action of internal pressure, the liquid is condensed into liquid on the walls of the shell (11) and the liner (12) when meeting the condensation, latent heat of vaporization is released, and the condensed liquid working medium flows back to the bottom of the vacuum inner cavity (4) along the wall surface of the vacuum inner cavity (4) under the action of gravity; in the process of continuously evaporating and condensing the liquid working medium, the heat of the liquid working medium is transferred to the beverage to be heated;

and (3) cooling: when the beverage is heated to a set temperature, the heating device (3) stops working, and at the moment, because the temperature of the beverage is higher than the ambient temperature, the heat of the beverage can be dissipated from the wall surface of the vacuum inner cavity (4) in a phase change heat transfer mode, so that the rapid cooling and cooling of the beverage are realized;

and (3) heat preservation: when the temperature of the beverage is cooled to the starting temperature, all steam in the vacuum inner cavity (4) is condensed into liquid working medium and flows back to the bottom of the vacuum inner cavity (4), and the phase change heat transfer is stopped; the vacuum inner cavity (4) is in a vacuum state, so that the transmission path of the heat of the drink is blocked, and the heat preservation of the drink is realized.

9. The beverage heating, cooling and warming method according to claim 8, wherein the starting temperature is controlled by the filling amount of the liquid working medium, and the starting temperature is set according to the appropriate cooling temperature required by different beverages.

10. The beverage heating, cooling and warming method according to claim 8, wherein in the cooling process, the warming cover can be opened, and the kettle body (1) can be placed in cold water.

Images