CN219396949U - Liquid heating assembly and liquid heating container - Google Patents

Abstract

The utility model relates to the field of heat preservation and heat insulation, and provides a liquid heating assembly and a liquid heating container, wherein the liquid heating assembly comprises: a container liner; the sealed shell is internally provided with a vacuum heat insulation cavity and surrounds the periphery of the container liner; the heating element is positioned at the bottom of the container liner and is used for heating liquid in the container liner. According to the liquid heating assembly and the liquid heating container provided by the utility model, direct convection heat transfer between the container liner and the external environment can be reduced, so that the vacuum degree requirement on the vacuum heat-insulating layer is reduced, and the processing difficulty and the vacuumizing difficulty of the vacuum heat-insulating layer are reduced.

Description

Liquid heating assembly and liquid heating container

Technical Field

The utility model relates to the technical field of heat preservation and heat insulation, in particular to a liquid heating assembly and a liquid heating container.

Background

In daily life and work, in order to ensure the health of drinking water, the drinking water is usually required to be drunk after being heated and boiled. Therefore, the boiling water can be utilized to sterilize and disinfect the water, and the health and safety of drinking water are ensured. However, after the water is heated and boiled, it is impossible to drink completely at one time, and the water which is not drunk may be cooled and cooled, and a large amount of energy is consumed for reheating.

In the related art, a heat preservation kettle appears, the inner bag of kettle is made bilayer structure, forms the inner bag through two-layer stainless steel punching press welding for example, and the space between two-layer stainless steel is vacuumed, reduces the air convection heat transfer of inner bag and external environment to promote the thermal insulation effect to hot water.

However, in the related art, a high vacuum degree is required to be pumped out of a gap between two layers of stainless steel, and certain difficulty exists in the process of vacuumizing.

Disclosure of Invention

The present utility model is directed to solving at least one of the technical problems existing in the related art. Therefore, the utility model provides the liquid heating component which can reduce direct convection heat transfer between the container liner and the external environment, thereby reducing the vacuum degree requirement on the vacuum heat preservation layer and reducing the processing difficulty and the vacuumizing difficulty of the vacuum heat preservation layer.

The utility model also provides a liquid heating container.

A liquid heating assembly according to an embodiment of the first aspect of the present utility model comprises:

a container liner;

the sealed shell is internally provided with a vacuum heat insulation cavity, and surrounds the periphery of the container liner;

the heating element is positioned at the bottom of the container liner and is used for heating liquid in the container liner.

According to the liquid heating assembly provided by the embodiment of the utility model, the airtight shell is arranged around the periphery of the container liner, and the vacuum heat insulation cavity is arranged in the airtight shell. Therefore, after the liquid in the container liner is heated by the heating element, at least one layer of airtight shell is arranged between the metal wall of the container liner and the vacuum heat insulation cavity; compared with the prior art, the heat transfer path between the container liner and the vacuum heat insulation cavity is prolonged, so that direct convection heat transfer between the container liner and the external environment is reduced, the vacuum degree requirement in the vacuum heat insulation cavity is reduced, namely, the processing difficulty of the airtight shell during processing and the difficulty of vacuumizing the vacuum heat insulation cavity in the airtight shell are reduced, and the production cost of the liquid heating assembly can be effectively reduced.

According to one embodiment of the present utility model, a preset gap is provided between the airtight housing and the peripheral wall of the container liner.

Like this, reserve certain clearance through between the perisporium of airtight casing and container inner bag, can effectively prolong the heat transfer path between perisporium and the vacuum heat insulation chamber of container inner bag, reduced the direct convection heat transfer of container inner bag and external environment promptly, reduced the vacuum degree demand to the vacuum heat insulation intracavity, reduced the degree of difficulty of processing when processing airtight casing and the degree of difficulty of evacuating the vacuum heat insulation chamber in the airtight casing promptly, can effectively reduce liquid heating component's manufacturing cost.

In addition, the air in the preset gap can be used as a natural heat insulation layer, so that heat in the container liner can be effectively isolated from radiating outwards, and the vacuum degree requirement on the vacuum heat insulation cavity can be effectively reduced, and therefore the processing difficulty of the airtight shell during processing and the difficulty of vacuumizing the vacuum heat insulation cavity in the airtight shell are reduced.

According to one embodiment of the utility model, the liquid heating assembly further comprises an insulation layer located at least one of the first position, the second position and the third position;

the first position is one side of the closed shell facing the container liner, the second position is the vacuum heat insulation cavity, and the third position is one side of the closed shell facing away from the container liner.

In the embodiment of the utility model, the heat insulation layer is arranged at least one of the first position, the second position and the third position; like this, the heat preservation has increased the heat transfer resistance of the outward radiant heat of article in the container inner bag to the heat transfer path of the outward heat transfer of article in the container inner bag has been prolonged, has reduced the direct convection heat transfer of container inner bag and external environment promptly, has reduced the vacuum degree demand to the vacuum heat-proof chamber, has reduced the degree of difficulty of processing when processing the airtight casing and the degree of difficulty of evacuating the vacuum heat-proof chamber in the airtight casing promptly, can effectively reduce the manufacturing cost of liquid heating component.

According to one embodiment of the utility model, the heat-insulating layer covers the peripheral wall of the container liner in the axial direction of the container liner.

Like this, cover the whole perisporium of container inner bag along axial with the heat preservation, can all increase the heat transfer resistance and the extension heat transfer path of outwards radiating heat with the whole perisporium direction of container inner bag, be favorable to carrying out the heat preservation to the article in the container inner bag.

According to one embodiment of the utility model, the heat preservation layer is positioned on the inner wall of the vacuum heat insulation cavity; and/or the number of the groups of groups,

convex ribs are arranged on the inner wall of the vacuum heat insulation cavity, and the heat insulation layer is connected with the convex ribs; the convex ribs are used for fixing the heat insulation layer.

Like this, after setting up the heat preservation to the thermal-insulated chamber of vacuum, can leave the passageway that the air current flows in the thermal-insulated chamber of vacuum, be convenient for carry out the evacuation to the thermal-insulated chamber of vacuum, can reduce the degree of difficulty to the thermal-insulated chamber evacuation of vacuum.

According to one embodiment of the utility model, the liquid heating assembly further comprises an air pump in communication with the vacuum insulated chamber.

In the embodiment of the utility model, the air pump is communicated with the vacuum heat insulation cavity, so that the air pump can vacuumize the vacuum heat insulation cavity. Therefore, the vacuum heat insulation cavity can be vacuumized when the articles in the container liner are required to be subjected to heat insulation, in other words, the vacuum heat insulation cavity can be kept in a state of high vacuum degree for a long time, so that the requirement on the material strength of the airtight shell can be reduced, and the processing cost of the airtight shell can be reduced.

In addition, in the embodiment of the utility model, the vacuum heat insulation cavity can be vacuumized when the heat insulation of the objects in the container liner is needed by arranging the air pump communicated with the vacuum heat insulation cavity. Therefore, the vacuum heat insulation cavity can be kept in a state of high vacuum degree for a long time, so that the condition that air leakage occurs in the state of high vacuum degree for a long time in the vacuum heat insulation cavity can be avoided, that is, the service life of the airtight shell can be effectively prolonged, and the effectiveness of heat insulation and heat preservation of articles in the container liner is guaranteed.

According to one embodiment of the utility model, the liquid heating assembly further comprises a first control valve provided on the delivery passage of the air pump.

In the embodiment of the utility model, the first control valve is arranged on the conveying channel of the air pump, so that after the air pump finishes vacuumizing the vacuum heat insulation cavity, the first control valve can be closed, thereby effectively ensuring the vacuum degree in the vacuum heat insulation cavity; when the heat preservation is not needed for the articles in the container liner, the first control valve can be opened, and the air is pressed into the vacuum heat insulation cavity by the external atmospheric pressure, so that the vacuum degree in the vacuum heat insulation cavity is reduced, and the airtight shell can be protected.

According to one embodiment of the utility model, the first control valve is a one-way valve located between the air pump and the hermetic housing.

According to one embodiment of the utility model, an air inlet pipeline is arranged on the airtight shell and is communicated with the vacuum heat insulation cavity; the liquid heating assembly further comprises a second control valve, the second control valve is arranged on the air inlet pipeline, and the second control valve is used for controlling the opening and closing of the air inlet pipeline.

In the embodiment of the utility model, the first control valve is opened, and external cold air enters the vacuum heat insulation cavity, so that the convection of air in the vacuum heat insulation cavity is enhanced, the convection heat transfer efficiency of the container liner and the external environment is improved, and the heat dissipation of the articles in the container liner is facilitated.

A liquid heating vessel according to an embodiment of the second aspect of the utility model comprises a housing and a liquid heating assembly according to an embodiment of the first aspect of the utility model, the liquid heating assembly being provided within the housing.

According to one embodiment of the utility model, a water outlet is arranged on the shell and is communicated with the bottom of the container liner of the liquid heating assembly through a water outlet pipe; the water outlet pipe is provided with a water pump which is used for pumping out the liquid in the container liner.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of the overall structure of a liquid heating assembly provided by an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a graph of the relationship between the convective heat transfer coefficient of air and pressure;

FIG. 4 is a schematic view of another cross-sectional structure taken along line A-A in FIG. 1;

FIG. 5 is a schematic view of yet another cross-sectional structure taken along line A-A in FIG. 1;

FIG. 6 is a schematic view of yet another cross-sectional configuration taken along line A-A of FIG. 1;

FIG. 7 is a schematic view of yet another cross-sectional structure taken along line A-A in FIG. 1;

FIG. 8 is a schematic view of yet another cross-sectional configuration taken along line A-A of FIG. 1;

fig. 9 is a schematic view of the overall structure of a liquid heating vessel according to an embodiment of the present utility model.

Reference numerals:

10: a liquid heating assembly; 20: a housing;

110: a container liner; 120: a closed housing; 130: a heating member; 140: a heat preservation layer; 150: an air pump; 160: a first control valve; 170: a second control valve;

111: a receiving cavity; 112: presetting a gap; 121: a vacuum heat insulation chamber; 122: an air intake duct; 151: and a conveying passage.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "coupled," "coupled," and "connected" should be construed broadly, and may be either a fixed connection, a removable connection, or an integral connection, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in embodiments of the present utility model will be understood in detail by those of ordinary skill in the art.

In embodiments of the utility model, unless expressly specified and limited otherwise, a first feature "up" or "down" on a second feature may be that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

In daily life, people are indispensable to drink water or beverage, drink and the like. Generally, in order to ensure the safety and health of drinking water and avoid damage to intestines and stomach of a human body, water needs to be heated to a boiling state in a heating mode or is drunk after being boiled for a certain time. Namely, the high temperature during boiling is utilized to disinfect and sterilize some germs or viruses contained in the water, so that the health and safety of drinking water are ensured.

It will be appreciated that it is generally not possible to heat only one cup of water or a single bite of water at a time, in order to increase efficiency; that is, the amount of water boiled per heating is typically greater than the actual amount of water one needs to reference. Thus, after people drink, the rest part of water can be gradually cooled down, and especially in winter, the cooling speed of the water is higher. When the water is drunk again, the water needs to be heated again, and the redundant energy consumption is caused.

In the related art, a heat-insulating kettle is adopted to insulate, and an inner container of the heat-insulating kettle is generally made into a double-layer structure, for example, the inner container is formed by punching and welding two layers of stainless steel; then, the space between the two stainless steel layers is evacuated again, and it is generally necessary to maintain the absolute pressure in the space between the two stainless steel layers to 0.001Pa. Thereby reducing the convection heat exchange between the inner container and the air in the external environment and ensuring the heat preservation effect on the hot water in the inner container.

However, in the related art, the absolute pressure in the gap between the two layers of stainless steel needs to be pumped to 0.001Pa, which has high requirements on a vacuum pump and high difficulty in vacuumizing.

Fig. 1 is a schematic view of the overall structure of a liquid heating assembly according to an embodiment of the present utility model.

Referring to fig. 1, in view of the technical problems existing in the related art, an embodiment of the present utility model provides a liquid heating assembly 10, including: a container liner 110 and a hermetic case 120.

Specifically, in embodiments of the present utility model, the container liner 110 may be formed using stainless steel stamping, for example, in some examples, the container liner 110 may be food grade stainless steel, such as 304 stainless steel. It will be appreciated that the container liner 110 has a receiving cavity 111 formed therein, and the receiving cavity 111 may be used for receiving articles requiring thermal insulation, for example, hot water or food may be stored in the receiving cavity 111. As noted herein, in some examples, the container liner 110 may also contain cold water (e.g., chilled cold water), or a cool beverage, etc. The type of articles stored in the container liner 110 is not limited in this embodiment of the present utility model.

It is understood that in some examples, the items within the container liner 110 that require insulation may be placed within the container liner 110 after external heating. For example, water may be boiled by a gas range, or the like, and then added to the container liner 110 to be kept warm.

In other possible examples, water may be added to the container liner 110 and then the water in the container liner 110 is heated. For example, referring to fig. 1, a heating element 130 may be provided at the bottom of the container liner 110, and water in the container liner 110 may be heated by the heating element 130.

In some specific examples, the heating element 130 may be a heat-generating resistive wire; alternatively, in other specific examples, the heating member 130 may be an electromagnetic heat generating plate or the like. In the embodiment of the present utility model, the specific type of the heating member 130 is not limited.

It will be appreciated that in the embodiment of the present utility model, the heating element 130 is shown as a specific example disposed at the bottom of the container liner 110. In some possible examples, the heating element 130 may also be disposed on top of the container liner 110 or within the container liner 110.

Fig. 2 is a schematic cross-sectional view taken along line A-A of fig. 1.

Referring to fig. 2, in the embodiment of the present utility model, a vacuum insulation chamber 121 is provided in a hermetic shell 120, and the hermetic shell 120 surrounds the outer circumference of the container liner 110.

Specifically, in the embodiment of the present utility model, the vacuum insulation chamber 121 in the hermetic case 120 may be evacuated by the air pump 150, so that the air in the vacuum insulation chamber 121 becomes rarefaction, and the flow and velocity of the air in the vacuum insulation chamber 121 are reduced. That is, in the embodiment of the present application, the vacuum insulation chamber 121 in the hermetic case 120 is not an absolute vacuum, and has a certain vacuum degree therein, so that the air in the vacuum insulation chamber 121 is thinner, that is, the air density is lower than the air density at the external atmosphere.

Fig. 3 is a graph of the relationship between the convective heat transfer coefficient of air and pressure.

Specifically, referring to fig. 3, at normal temperature (for example, 20 ℃), the coefficient of thermal conductivity of air is 0.0267W/mK, which is itself relatively low, and the heat dissipation of air to the heat in the container liner 110 is mainly due to convection heat transfer. It will be appreciated that the power of convective heat transfer is primarily due to the change in density of the fluid (e.g., air) at a change in temperature (heating of the contents stored within the container liner 110), and that after a change in density of the air, the buoyancy/buoyancy lift of the air will produce a change in air flow rate, resulting in a change in the convective coefficient. Referring to fig. 3, in the embodiment of the present utility model, the air in the vacuum insulation chamber 121 is vacuumized, so that the air amount in the vacuum insulation chamber 121 is reduced, that is, the air in the vacuum insulation chamber 121 becomes thin, and the density is reduced; thus, when the temperature of the articles in the container liner 110 changes, the density of the air in the vacuum heat insulation cavity 121 changes little, so that the convection of the air in the vacuum heat insulation cavity 121 can be reduced, that is, the convection heat exchange coefficient of the air in the vacuum heat insulation cavity 121 is reduced, heat dissipation can be reduced, and the heat preservation of the articles in the container wall body is facilitated.

As a specific example, in the embodiment of the present utility model, the seal housing may be specifically made of plastic, for example, the seal housing 120 is made of heat-insulating plastic, or the seal housing 120 is made of acrylonitrile-butadiene-styrene (Acrylonitrile Butadiene Styrene, ABS for short) engineering plastic.

It will be appreciated herein that in embodiments of the present utility model, the containment vessel 120 surrounds the outer periphery of the vessel liner 110. Specifically, the airtight housing 120 may be an annular structure, and the airtight housing 120 with the annular structure is sleeved on the outer periphery of the container liner 110.

In some specific examples, the container liner 110 may be a cylindrical structure and the hermetic case 120 may be provided in a circular ring shape. In other examples, the container liner 110 may also be square or other polygonal structures; the hermetic case 120 may be provided in a square-shaped alternate or polygonal ring. Of course, the airtight housing 120 may be provided in a circular ring structure.

It can be appreciated that, in the embodiment of the present utility model, the airtight housing 120 is disposed around the outer periphery of the container liner 110, so that at least one layer of wall of the airtight housing 120 exists in the heat transfer medium between the container liner 110 and the vacuum insulation cavity 121; i.e., increases the heat transfer resistance and heat transfer path between the container liner 110 and the vacuum insulated cavity 121. In this way, the vacuum requirements within the vacuum insulated chamber 121 may be reduced compared to the prior art; experiments show that the absolute pressure in the vacuum heat insulation cavity 121 can be maintained between 40kPa and 50kPa, so that good heat insulation effect can be ensured. That is, the difficulty of processing the hermetic case 120 and the difficulty of evacuating the vacuum heat insulation chamber 121 in the hermetic case 120 are reduced, and the production cost of the liquid heating assembly 10 can be effectively reduced.

According to the liquid heating assembly 10 of the embodiment of the present utility model, the hermetic shell 120 is provided around the outer circumference of the container liner 110, and the vacuum insulation chamber 121 is provided in the hermetic shell 120. Thus, at least one layer of airtight shell 120 is arranged between the metal wall of the container liner 110 and the vacuum heat insulation cavity 121; compared with the related art, the heat transfer path between the container liner 110 and the vacuum heat insulation cavity 121 is prolonged, so that direct convection heat transfer between the container liner 110 and the external environment is reduced, the vacuum degree requirement in the vacuum heat insulation cavity 121 is reduced, namely, the processing difficulty in processing the closed shell 120 and the difficulty in vacuumizing the vacuum heat insulation cavity 121 in the closed shell 120 are reduced, and the production cost of the liquid heating assembly 10 can be effectively reduced.

Fig. 4 is a schematic view of another cross-sectional structure taken along line A-A in fig. 1.

Referring to fig. 2 and 4, in an alternative example of the embodiment of the present utility model, the airtight housing 120 has a preset gap 112 with the peripheral wall of the container liner 110.

Specifically, in the embodiment of the present utility model, the preset gap 112 may specifically refer to a gap between a side of the airtight housing 120 facing/facing the peripheral wall of the container liner 110 and a peripheral wall of an inner point of the container. Taking the annular closed casing 120 in the foregoing embodiment of the present utility model as an example for illustration, it may be specifically that the inner diameter of the annular closed casing 120 is larger than the outer diameter of the container liner 110, so as to maintain the preset gap 112 between the closed casing 120 and the container liner 110.

It is understood that in the embodiment of the present utility model, the axis of the airtight housing 120 and the axis of the container liner 110 may be coaxial. That is, the axis of the hermetic case 120 and the axis of the container liner 110 may coincide or nearly coincide; in other words, the preset gap 112 may be the same in the circumferential direction of the container liner 110. In this way, the same heat-insulating effect on the articles in the container liner 110 in the circumferential direction of the container liner 110 can be ensured. Of course, in some embodiments, the axis of the seal may be different from the axis of the container liner 110, i.e., there may be some displacement or offset along the radial direction of the container liner 110.

In some specific examples, the preset gap 112 may be 1mm-5mm. Specifically, the preset gap 112 may be 1mm, 3mm, 5mm, or the like. It should be understood that, in the embodiment of the present utility model, the specific values of the preset gap 112 are only shown as some specific examples, and the preset gap 112 is not specifically limited in the embodiment of the present utility model.

It should be noted that, the numerical values and the numerical ranges related to the embodiments of the present utility model are approximate values, and may have a certain range of errors under the influence of the manufacturing process, and those errors may be considered to be negligible by those skilled in the art.

In the embodiment of the utility model, a certain gap is reserved between the airtight shell 120 and the peripheral wall of the container liner 110, so that the heat transfer path between the peripheral wall of the container liner 110 and the vacuum heat insulation cavity 121 can be effectively prolonged, namely, the direct convection heat transfer between the container liner 110 and the external environment is reduced, the vacuum degree requirement in the vacuum heat insulation cavity 121 is reduced, namely, the processing difficulty in processing the airtight shell 120 and the difficulty in vacuumizing the vacuum heat insulation cavity 121 in the airtight shell 120 are reduced, and the production cost of the liquid heating assembly 10 can be effectively reduced.

In addition, the air in the preset gap 112 can be used as a natural heat insulation layer, so that the heat in the container liner 110 can be effectively isolated from radiating outwards, and the vacuum requirement on the vacuum heat insulation cavity 121 can be effectively reduced, and therefore the processing difficulty of the airtight shell 120 in processing and the difficulty of vacuumizing the vacuum heat insulation cavity 121 in the airtight shell 120 are reduced.

Fig. 5 is a schematic view of a further sectional structure along the line A-A in fig. 1, and fig. 6 is a schematic view of a further sectional structure along the line A-A in fig. 1.

Referring to fig. 4-6, in an alternative example of an embodiment of the present utility model, the liquid heating assembly 10 further includes an insulating layer 140, where the insulating layer 140 is located at least one of a first position (labeled in the figures), a second position (labeled in the figures), and a third position (labeled in the figures).

Specifically, in the embodiment of the present utility model, the first position may be a side of the airtight housing 120 facing the container liner 110. That is, in the embodiment of the present utility model, the insulation layer 140 may be disposed in the gap between the hermetic case 120 and the container liner 110. In some possible examples, the insulating layer 140 may be wrapped around the perimeter wall of the container liner 110. In other examples, the insulating layer 140 may be attached to a side wall of the hermetic case 120.

In a specific arrangement, the insulating layer 140 may be attached to both the side wall of the hermetic case 120 and the peripheral wall of the container liner 110.

It should be noted that, in the embodiment of the present utility model, when the thermal insulation layer 140 is disposed in the preset gap 112, the thermal insulation layer 140 may completely fill the whole preset gap 112. In some examples, the insulating layer 140 may also fill only a portion of the preset gap 112 in the radial direction of the container liner 110. That is, after the preset gap 112 is filled with the insulating layer 140, a part of the gap may be reserved with air as a natural insulating medium.

In some possible examples, the second position may refer to within the vacuum insulated cavity 121. When specifically provided, the insulating layer 140 may be filled in the vacuum insulation chamber 121 therebetween.

In other examples, the third position may refer to a side of hermetic shell 120 facing away from the contemporaneous liner. Taking the airtight housing 120 as an example for describing the annular structure, the third position may refer to the outer peripheral wall of the annular airtight housing 120.

It is to be understood that in the embodiment of the present utility model, the insulating layer 140 may be disposed only in the first position (for example, as shown in fig. 4), or may be disposed only in the second position (for example, as shown in fig. 5) or the third position (for example, as shown in fig. 6).

In some alternative examples, insulation 140 may also be disposed in two of the first, second, and third positions. For example, insulation 140 may be disposed in a first position and a second position, or insulation 140 may be disposed in a first position and a third position; or in some examples, insulation 140 may be disposed at the second location and at the third location.

In other alternative examples of embodiments of the present utility model, insulation 140 may be provided at the first location, the second location, and the third location.

As a specific example, in the embodiment of the present utility model, the insulation layer 140 may be insulation cotton.

In the embodiment of the utility model, the insulation layer 140 is arranged at least one of the first position, the second position and the third position; in this way, the heat insulation layer 140 increases the heat transfer resistance of the heat radiated by the articles in the container liner 110, and prolongs the heat transfer path of the heat transferred by the articles in the container liner 110, i.e. reduces the direct convection heat transfer between the container liner 110 and the external environment, reduces the vacuum requirement in the vacuum heat insulation cavity 121, i.e. reduces the processing difficulty in processing the closed shell 120 and the difficulty in vacuumizing the vacuum heat insulation cavity 121 in the closed shell 120, and can effectively reduce the production cost of the liquid heating assembly 10.

In some alternative examples of embodiments of the present utility model, with continued reference to fig. 5-7, the insulation layer 140 covers the peripheral wall of the container liner 110 in the axial direction of the container liner 110.

In this way, the heat insulation layer 140 covers the entire circumferential wall of the container liner 110 along the axial direction, so that the heat transfer resistance of the outward radiation heat can be increased and the heat transfer path can be prolonged in the entire circumferential wall direction of the container liner 110, which is beneficial to heat insulation of the articles in the container liner 110.

It can be appreciated that, in the embodiment of the present utility model, because the vacuum insulation cavity 121 needs to be evacuated, after the heat insulation layer 140 is disposed in the vacuum insulation cavity 121, the heat insulation layer 140 can form resistance to the air flow in the vacuum insulation cavity 121 to a certain extent, so as to reduce the air flow rate in the vacuum insulation cavity 121, that is, reduce the convective heat transfer coefficient of the air in the vacuum insulation cavity 121, and facilitate heat insulation of the articles in the container liner 110.

In addition, since the heat convection coefficient of the air in the vacuum heat insulation chamber 121 is reduced, the vacuum degree requirement in the vacuum heat insulation chamber 121 is reduced, and the processing cost can be reduced.

In some alternative examples of embodiments of the utility model, insulation layer 140 is located on the inner wall of vacuum insulated chamber 121.

That is, in the embodiment of the present utility model, when the insulating layer 140 is disposed in the vacuum insulation chamber 121, the insulating layer 140 may be attached to the inner wall of the vacuum insulation chamber 121, and then a certain gap may be left on the side of the insulating layer 140 facing away from the side wall of the vacuum insulation chamber 121 for air circulation or flow. In this way, the resistance when evacuating the vacuum insulation chamber 121 can be reduced, and the difficulty of evacuating can be reduced.

In other alternative examples of the embodiment of the present utility model, ribs (not shown) may be provided on the inner wall of the vacuum insulation chamber 121, and the insulation layer 140 is connected to the ribs; the ribs are used to secure the insulation layer 140.

When the heat insulation device is specifically arranged, the heat insulation device can be arranged in the middle of the vacuum heat insulation layer, and the side wall of the heat insulation layer 140 is abutted against the convex ribs, so that the heat insulation layer 140 is fixed. In this way, a channel for air circulation is formed between the side wall of the insulating layer 140 and the inner wall of the vacuum insulation cavity 121 or is propped by the ribs, so that vacuum pumping is facilitated.

Alternatively, in some examples, the insulating layer 140 may be embedded in a gap between two adjacent ribs, so as to be fixed on the inner wall of the vacuum insulation chamber 121.

In the embodiment of the utility model, after the heat preservation layer 140 is arranged in the vacuum heat insulation cavity 121, an airflow flowing channel can be reserved in the vacuum heat insulation cavity 121, so that the vacuum heat insulation cavity 121 can be conveniently vacuumized, and the difficulty in vacuumizing the vacuum heat insulation cavity 121 can be reduced.

Fig. 7 is a schematic view of a further sectional structure along the line A-A in fig. 1, and fig. 8 is a schematic view of a further sectional structure along the line A-A in fig. 1.

Referring to fig. 7 and 8, in an alternative example of an embodiment of the present utility model, the liquid heating assembly 10 further includes an air pump 150, the air pump 150 being in communication with the vacuum insulated chamber 121.

In an embodiment of the present utility model, the air pump 150 is used to evacuate the vacuum insulation chamber 121 to expel at least a portion of the air within the insulation chamber.

Specifically, in an embodiment of the present utility model, the air pump 150 may be a micro vacuum pump. The air pump 150 may communicate with the vacuum insulation chamber 121 through a delivery passage 151 (e.g., a vacuum pipe), thereby evacuating the vacuum insulation chamber 121.

It will be appreciated that in embodiments of the present utility model, the air pump 150 may be configured to vacuum the vacuum insulated chamber 121 once every predetermined time period, for example, once every 3 days, one week or one month, to ensure the vacuum level in the vacuum insulated chamber 121.

In some possible examples, the air pump 150 may also be configured to evacuate the vacuum insulation chamber 121 each time the contents of the container liner 110 are heated or thermally insulated.

In the embodiment of the utility model, the air pump 150 is arranged to be communicated with the vacuum heat insulation cavity 121, and the air pump 150 is used for vacuumizing the vacuum heat insulation cavity 121. In this way, the vacuum heat insulation cavity 121 can be vacuumized when the articles in the container liner 110 need to be heat-insulated, in other words, the vacuum heat insulation cavity 121 can not need to maintain a high vacuum degree state for a long time, so that the requirement on the material strength of the closed shell 120 can be reduced, and the processing cost of the closed shell 120 can be reduced.

In addition, in the embodiment of the present utility model, by providing the air pump 150 in communication with the vacuum insulation chamber 121, the vacuum insulation chamber 121 can be evacuated again when the thermal insulation of the articles in the container liner 110 is required. Thus, the vacuum heat insulation cavity 121 can avoid the condition of air leakage under the condition that the vacuum heat insulation cavity 121 keeps high vacuum degree for a long time, that is, the service life of the airtight shell 120 can be effectively prolonged, and the effectiveness of heat insulation for the articles in the container liner 110 can be ensured.

As a specific example of an embodiment of the present utility model, referring to fig. 7, the liquid heating assembly 10 further includes a first control valve 160, the first control valve 160 being provided on the delivery passage 151 of the air pump 150.

Specifically, in the embodiment of the present utility model, the first control valve 160 may be an electric valve. It will be appreciated that the liquid heating assembly 10 may be provided with a controller that controls the heating and the start and stop of the air pump 150. Specifically, the controller may be any one of a central processing unit (central processing unit, abbreviated as CPU), a micro control unit (Microcontroller Unit; abbreviated as MCU), a Single-chip microcomputer (Single-Chip Microcomputer) or a programmable logic controller (Programmable Logic Controller, abbreviated as PLC).

In specific use, the controller may control the opening and closing of the first control valve 160 according to actual needs, for example, after the air pump 150 completes vacuumizing the vacuum insulation cavity 121, the controller controls the first control valve 160 to be closed; alternatively, the controller controls the first control valve 160 to be opened when it is necessary to evacuate the vacuum insulation chamber 121.

In the embodiment of the utility model, the first control valve 160 is arranged on the conveying channel 151 of the air pump 150, so that after the air pump 150 completes vacuumizing the vacuum heat insulation cavity 121, the first control valve 160 can be closed, thereby effectively ensuring the vacuum degree in the vacuum heat insulation cavity 121; when the heat preservation of the articles in the container liner 110 is not required, the first control valve 160 can be opened, and the air is pressed into the vacuum heat insulation cavity 121 by the external atmospheric pressure, so that the vacuum degree in the vacuum heat insulation cavity 121 is reduced, and the airtight housing 120 can be protected.

It will be appreciated that in some examples of embodiments of the utility model, air pump 150 may also pump air into vacuum insulated chamber 121 when first control valve 160 is open; thereby increasing the convection of air within the vacuum insulated chamber 121 to facilitate the dissipation of heat from the liquid within the container liner. For example, when a user needs to drink the liquid in the container liner, the liquid needs to be cooled; at this time, air can be pumped into the vacuum heat insulation chamber 121 by the air pump 150, thereby improving the efficiency of convection heat dissipation.

In some alternative examples of embodiments of the utility model, the first control valve 160 is a one-way valve that is positioned between the air pump 150 and the hermetic housing 120.

Specifically, in the embodiment of the present utility model, the check valve may be a valve that allows only the gas to be discharged from the vacuum insulation chamber 121, and does not allow the air of the external environment to enter the vacuum insulation chamber 121. When the vacuum heat insulation device is specifically used, in the process of vacuumizing the vacuum heat insulation cavity 121 by the air pump 150, negative pressure is formed between the air pump 150 and the one-way valve, the one-way valve is opened, and air in the vacuum heat insulation cavity 121 is discharged; after the air pump 150 is completely evacuated, the air pump 150 is deactivated, and the external atmospheric pressure pushes the check valve closed, thereby maintaining the vacuum degree in the vacuum insulation chamber 121. In this way, the air pump 150 is facilitated to evacuate the vacuum insulation chamber 121.

In an alternative example of the embodiment of the present utility model, referring to fig. 8, an air inlet pipe 122 is provided on the airtight housing 120, and the air inlet pipe 122 is in communication with the vacuum insulation chamber 121; the liquid heating assembly 10 further includes a second control valve 170, the second control valve 170 is disposed on the air inlet pipe 122, and the second control valve 170 is used for controlling opening and closing of the air inlet pipe 122.

Specifically, in the embodiment of the present utility model, the second control valves 170 may be electrically operated valves.

In the embodiment of the utility model, the first control valve 160 is opened, and external cold air enters the vacuum heat insulation cavity 121, so that the convection of air in the vacuum heat insulation cavity 121 is enhanced, the convection heat transfer efficiency of the container liner 110 and the external environment is improved, and the heat dissipation of the articles in the container liner 110 is facilitated.

Fig. 9 is a schematic view of the overall structure of a liquid heating vessel according to an embodiment of the present utility model.

Referring to fig. 9, there is also provided a liquid heating vessel comprising a housing 20 and a liquid heating assembly 10 according to any of the preceding examples of embodiment of the utility model, the liquid heating assembly 10 being provided within the housing 20.

In some alternative examples of the embodiment of the utility model, a water outlet (not shown) is provided on the housing 20, and the water outlet is communicated with the bottom of the container liner 110 of the liquid heating assembly 10 through a water outlet pipe; the water outlet pipe is provided with a water pump for pumping out the liquid in the container liner 110.

Finally, it should be noted that the above-mentioned embodiments are merely illustrative of the utility model, and not limiting. Although the present utility model has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various combinations, modifications, or equivalents may be made to the technical solutions of the present utility model without departing from the spirit and scope of the technical solutions of the present utility model, and the present utility model is intended to be covered in the protection scope of the present utility model.

Claims (11)

1. A liquid heating assembly, comprising:

a container liner (110);

a closed shell (120), wherein a vacuum heat insulation cavity (121) is arranged in the closed shell (120), and the closed shell (120) surrounds the periphery of the container liner (110);

the heating element (130), the heating element (130) is located the bottom of container inner bag (110), heating element (130) are used for heating the liquid in container inner bag (110).

2. The liquid heating assembly according to claim 1, wherein a predetermined gap (112) is provided between the airtight housing (120) and the peripheral wall of the container liner (110).

3. The liquid heating assembly of claim 2, further comprising an insulation layer (140), the insulation layer (140) being located at least one of the first position, the second position, and the third position;

the first position is a side of the closed shell (120) facing the container liner (110), the second position is the vacuum heat insulation cavity (121), and the third position is a side of the closed shell (120) facing away from the container liner (110).

4. A liquid heating assembly according to claim 3, wherein the insulating layer (140) covers the peripheral wall of the container liner (110) in the axial direction of the container liner (110).

5. A liquid heating assembly according to claim 3, wherein the insulating layer (140) is located on an inner wall of the vacuum insulation chamber (121); and/or the number of the groups of groups,

the inner wall of the vacuum heat insulation cavity (121) is provided with convex ribs, and the heat insulation layer (140) is connected with the convex ribs; the ribs are used for fixing the heat preservation layer (140).

6. The liquid heating assembly of any of claims 1-5, wherein the liquid gradual heating assembly further comprises an air pump (150), the air pump (150) being in communication with the vacuum insulated chamber (121).

7. The liquid heating assembly of claim 6, further comprising a first control valve (160), the first control valve (160) being disposed on a delivery passage (151) of the air pump (150).

8. The liquid heating assembly of claim 7, wherein the first control valve (160) is a one-way valve located between the air pump (150) and the hermetic housing (120).

9. The liquid heating assembly according to claim 8, wherein an air inlet pipe (122) is arranged on the closed shell (120), and the air inlet pipe (122) is communicated with the vacuum heat insulation cavity (121); the liquid heating assembly further comprises a second control valve (170), the second control valve (170) is arranged on the air inlet pipeline (122), and the second control valve (170) is used for controlling the opening and closing of the air inlet pipeline (122).

10. A liquid heating vessel comprising a housing (20) and a liquid heating assembly (10) according to any one of claims 1-9, said liquid heating assembly (10) being provided within said housing (20).

11. The liquid heating vessel according to claim 10, wherein the housing (20) is provided with a water outlet, which is communicated with the bottom of the vessel inner container (110) of the liquid heating assembly (10) through a water outlet pipe; the water outlet pipe is provided with a water pump which is used for pumping out the liquid in the container liner (110).