CN214665172U - Little kitchen is precious - Google Patents

Abstract

The utility model discloses a little kitchen is precious, include: the lower end of the inner container is provided with an opening for installing a heating element, and the inner container is provided with a water inlet pipe and a water outlet pipe; the heating device is characterized in that the heating body of the heating element and the water outlet of the water inlet pipe are arranged close to the opening, and the water inlet of the water outlet pipe is arranged close to the top of the liner; the outer wrapping of the inner container is provided with a heat insulation layer, the bottom of the heat insulation layer is provided with a groove serving as an electric component installation cavity, and an opening of the inner container extends into the groove. The small kitchen appliance is of a vertical structure, the opening of the container faces downwards, and the bottom of the small kitchen appliance is a low-temperature water layer area, so that heat dissipation is less, the heat preservation effect can be greatly improved, the energy-saving effect is achieved, and the volume can be smaller under the same energy efficiency; the electric part cavity is positioned in a low-temperature area, so that the service life of the electric part is prolonged, and the reliability of a product is ensured; the heat preservation layer is adopted to preserve heat of the inner container and play a role in fixing the inner container.

Description

Little kitchen is precious

Technical Field

The utility model relates to an instant heating type electric water heater technical field especially relates to a little kitchen is precious.

Background

The small kitchen appliance is a small electric water heater which can be directly installed in a cabinet, and is more and more favored because of simple installation and small volume. The existing small kitchen appliance has the following defects: (1) the electric heating pipe is arranged on the upper part, and meanwhile, the water outlet pipe is positioned on the top, so that the high water level of hot water can be realized, the upper part is used for installing an electric part, a water inlet pipe and a water outlet pipe, the heat insulation layer cannot cover, and the upper part is a high-temperature water area, so that the heat dissipation is fast, and the energy efficiency of a product is not facilitated; (2) the electric part is in a high-temperature area for a long time, so that the service life of the electric part is not facilitated, and the reliability is reduced; (3) the liner opening is arranged upwards, water is easy to accumulate at the liner opening when water leaks or splashes are dropped from the liner, the whole machine is electrified, and potential safety hazards exist; (4) the heating pipe is arranged on the top, and the heating end is close to the top, so that the hot water output rate is not improved; (5) the structure is complicated, the production process is complicated, the rejection rate is high, the production management and the after-sales maintenance are not facilitated, and the production cost is increased. (6) The heating body of the heating pipe is positioned at the middle upper part, which causes that the hot water at the upper part is gathered fast, the cold water area at the lower part is larger, the temperature difference of the water temperature layer of the inner container is larger, and the output rate of the hot water is lower.

Patent CN 105352169B discloses a practical little kitchen is precious, including inner bag, shell, cap, main control chip, outlet pipe, inlet tube, temperature sensitive sensor, cover seat and bottom, the inner bag is a round head lower extreme open-ended cylinder barrel for the upper end, and the inner bag upper end is equipped with main control chip, outlet pipe, inlet tube and temperature sensitive sensor, main control chip and temperature sensitive sensor are located inner bag upper end button head and lean on the inboard, outlet pipe and inlet tube are located inner bag upper end button head excircle border, and the cover seat is installed to the inner bag lower extreme, the bottom is installed in the cooperation of cover seat lower extreme, the inner bag lower extreme is hugged closely to bottom upper end excircle end, the heater is installed to the bottom upper end, and the bottom lower extreme is equipped with the lid frame and heats the control chip, the lid frame sets up in the shell bottom, the cap is installed in the shell upper end. This patent has adopted spiral heater, can make little kitchen precious water heater in time heat and provide sufficient hot water. But this patent still has the heat preservation effect not good, influences the problem of electric part life.

Disclosure of Invention

To the problem that exists among the prior art, the utility model aims to provide a little kitchen is precious that heat preservation effect is good and electric part life is longer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a small kitchen appliance comprising: the lower end of the inner container is provided with an opening for installing a heating element, and the inner container is provided with a water inlet pipe and a water outlet pipe; the heating device is characterized in that the heating body of the heating element and the water outlet of the water inlet pipe are arranged close to the opening, and the water inlet of the water outlet pipe is arranged close to the top of the liner; the outer wrapping of the inner container is provided with a heat insulation layer, the bottom of the heat insulation layer is provided with a groove serving as an electric component installation cavity, and an opening of the inner container extends into the groove.

As a further explanation of the above scheme, a flange pressing cover is provided on the opening, and the heating member is fixed on the opening through the flange pressing cover.

As a further explanation of the above aspect, the heating member includes: the flange is arranged on the flange and extends into the heating body in the inner container, and a wiring terminal connected with the heating body is exposed on the outer side of the flange.

As a further explanation of the above scheme, the heating body is a spiral heating body or a convolution heating body.

As a further explanation of the above scheme, a blind pipe is arranged on the flange, and a thermal circuit breaker probe and a temperature controller probe are mounted on the blind pipe.

As a further explanation of the above scheme, a magnesium rod assembly is arranged in the inner container, and one end of the magnesium rod assembly is connected with the flange through a support seat.

As a further explanation of the above scheme, a liner opening sealing ring is arranged between the opening of the liner and the flange.

As a further explanation of the above scheme, the water inlet pipe and the water outlet pipe are both arranged at the top or the bottom of the inner container.

As a further explanation of the above solution, a maintenance cover is detachably disposed at the bottom of the electrical component mounting cavity, and a water outlet is disposed on the maintenance cover.

As a further explanation of the above scheme, the heat insulation layer is an integrated member formed by foaming polyurethane.

The utility model has the advantages that:

the small kitchen appliance is of a vertical structure, a liner opening faces downwards, and the bottom of the small kitchen appliance is a low-temperature water layer area, so that heat dissipation is less, the heat preservation effect can be greatly improved, the energy-saving effect is achieved, and the volume can be smaller under the same energy efficiency; the electric part cavity is positioned in a low-temperature area, so that the service life of the electric part is prolonged, and the reliability of a product is ensured; the heat preservation layer is adopted to preserve heat of the inner container and play a role in fixing the inner container.

And secondly, the heating body is positioned at the lower part of the inner container by adopting the spiral heating body or the rotary heating body under the condition of ensuring the heating efficiency, the heat source gravity center of the heating pipe is greatly reduced, the hot water output rate is improved, and the condition that the temperature difference between the top temperature and the bottom temperature is too large due to the fact that the heating body is positioned at the middle upper part of the inner container is avoided.

Thirdly, the heating element is fixed on the opening of the liner through the flange gland, and the electric element cavity is communicated with the lower end opening of the liner, so that the flange gland is convenient to disassemble, and parts in the liner are convenient to maintain; the courage mouth is installed down, sets up the delivery port on maintenance lid and bottom end cover, thereby the inner bag leaks water or drips and splashes water and can't form ponding at the courage mouth and cause electric part short circuit electric leakage, and factor of safety is higher relatively.

Drawings

Fig. 1 is a cross-sectional view of a small kitchen appliance according to an embodiment.

Fig. 2 is a schematic view illustrating a heating process of the small kitchen appliance according to an embodiment.

Fig. 3 is a schematic structural diagram of a heating element of a small kitchen appliance according to an embodiment.

Fig. 4 is a cross-sectional view of the small kitchen appliance according to the second embodiment.

Fig. 5 is a schematic structural diagram of a heating element of the small kitchen appliance according to the third embodiment.

Description of reference numerals:

1: lower end cap, 2: outer shell, 3: insulating layer, 4: inner container, 5: water outlet pipe, 6: upper end cap, 7: inlet tube, 8: magnesium rod assembly, 9: heating element, 10: liner port sealing ring, 11: flange cover, 12: service cover, 13: a cold water layer.

9-1: blind pipe, 9-2: heating body, 9-3: supporting seat, 9-4: flange, 9-5: and a terminal.

Detailed Description

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

In the present application, unless otherwise specified or limited, "above" or "below" a first feature may include the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other through another feature therebetween. Also, the first feature being "above," "below," and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply an elevation which indicates a level of the first feature being higher than an elevation of the second feature. The first feature being "above", "below" and "beneath" the second feature includes the first feature being directly below or obliquely below the second feature, or merely means that the first feature is at a lower level than the second feature.

The following description will be further made in conjunction with the accompanying drawings of the specification, so that the technical solution and the advantages of the present invention are clearer and clearer. The embodiments described below are exemplary and are intended to be illustrative of the present invention, but should not be construed as limiting the invention.

Example one

As shown in fig. 1, a small kitchen appliance includes: the heating device comprises a liner 4, wherein an opening for installing a heating element 9 is formed in the lower end of the liner 4, and a water inlet pipe 7 and a water outlet pipe 5 are arranged on the liner 4; the water heater is characterized in that a heating body of the heating element 9 and a water outlet of the water inlet pipe 7 are arranged close to the opening, and a water inlet of the water outlet pipe 5 is arranged close to the top of the inner container 4; the outer parcel of inner bag 4 has heat preservation 3, is equipped with the recess as electric installation cavity in the bottom of heat preservation 3, the opening of inner bag 4 stretches into in the recess. The heat preservation layer is adopted to preserve heat of the inner container and simultaneously play a role of fixing the inner container, and the electric part cavity is located in a low-temperature area, so that the service life of the electric part is prolonged, and the reliability of a product is ensured. The hot water layer region of upper portion in the heat preservation parcel, structural heat preservation is better, and the electric chamber of bottom is in relative cold water district, and the heat dissipation is less relatively, can greatly improve the heat preservation effect to reach energy-conserving effect, the volume can be done littleer under the equal efficiency, thereby also reduced manufacturing cost.

A flange gland 11 is arranged on the opening, and the heating element 9 is fixed on the opening through the flange gland 11.

As shown in fig. 3, the heating element 9 is mounted on the lower portion of the liner 4 through a flange cover 11. The heating element 9 comprises a flange 9-4, a blind pipe 9-1 and a heating body 9-2 which are arranged on the flange 9-4, a thermal circuit breaker probe and a temperature controller probe are arranged on the blind pipe 9-1, and a wiring terminal 9-5 connected with the heating body 9-2, the thermal circuit breaker probe and the temperature controller probe is exposed outside the flange 9-4. Preferably, the blind pipe 9-1, the heating body 9-2 and the connecting terminal 9-5 are fixed on the flange 9-4 by welding. Here, the advantages of connecting the blind pipe 9-1 and the flange 9-4 are more compact structure and convenient installation. Obviously, according to different actual needs, those skilled in the art can also install the blind pipe separately, and is not limited to this embodiment.

In this embodiment, the water inlet pipe 7 and the water outlet pipe 5 are arranged at the bottom of the inner end 4. The heat preservation layer of the small kitchen appliance with lower water outlet can wrap the whole hot water layer area at the middle upper part, and the heat preservation effect is good.

The heat-insulating layer is arranged in the shell 2, and the bottom of the shell 2 is detachably provided with a lower end cover 1; a service cover 12 is detachably provided at the bottom of the groove. A first water outlet is arranged on the maintenance cover 12, and a second water outlet staggered with the first water outlet is arranged on the lower end cover 1. A maintenance cover is arranged at the bottom of the electric component mounting cavity to form an electric component mounting inner cavity, so that the electric component is protected; if the small kitchen appliance leaks water or is splashed by water, the liner port downwards flows to the electric component cavity and flows out through the first water outlet and the second water outlet, so that accumulated water is prevented from being formed; the lower end cover is arranged to be convenient for maintaining the electric component cavity. The lower end cover 1 and the shell 2, and the maintenance cover 12 and the electrical component cavity are connected through screws or buckles.

Preferably, a magnesium rod assembly 8 is arranged in the inner container 4, and the magnesium rod assembly 8 is fixedly connected with the flange 9-4 through a support seat 9-3. In the embodiment, the magnesium rod assembly 8 is connected with the flange 9-4 through threads; of course in other embodiments the magnesium rod assembly 8 may be welded or fastened to the flange by screws, not limited to this implementation. The magnesium rod component 8 can prevent the corrosion of the inner container and ensure the service life of the small kitchen ware. Here, the magnesium rod assembly 8 and the flange 9-4 are connected together, which has the advantages of more compact structure and convenient installation. Obviously, according to different actual needs, the magnesium rod assembly can be separately installed by persons skilled in the art, and is not limited to the embodiment.

Preferably, the blind pipe 9-1 is a double blind pipe, wherein one blind pipe is provided with a thermal circuit breaker probe, and the other blind pipe is provided with a temperature controller probe.

Preferably, the heat insulation layer 3 is integrally foamed by environment-friendly polyurethane.

Further preferably, the flange cover 11 is fixed to the opening by fixing screws. A liner opening sealing ring 10 is arranged between the opening of the liner 4 and the flange 9-4. The flange cover 11 functions to fix the heating member and seal the inner container.

The water outlet pipe 5 is an electricity-proof wall water outlet pipe component; the water inlet pipe 7 is an electricity-proof wall water inlet pipe component. The electricity-proof wall water inlet and outlet pipe assembly can reduce the possible leakage current and ensure the water safety of users.

An upper end cover 6 is arranged on the top of the shell 2. The upper end cover 6, the lower end cover 1 and the maintenance cover 12 are made of ABS material, and can also be made of alternative materials such as PP, HIPS and the like. The housing 2 is made of SPCC material, and may also be made of metal material such as SPHC, or alternative material such as ABS.

Referring to fig. 2, cold water enters the inner container 4 from the electricity-proof wall water inlet pipe assembly, and hot water flows out of the inner container 4 through the electricity-proof wall water outlet pipe assembly. In actual work, after the small kitchen appliance is powered on, the heating body 9-2 begins to emit heat, the hot water layer slowly rises from the bottom, the cold water layer at the top slowly moves downwards, the heating body 9-2 releases heat at the bottom to continuously heat the cold water layer 13, and the process is repeated until heating is completed. The heating body 9-2 is positioned at the lower part of the liner, so that the water temperature of the whole liner 4 is distributed uniformly after the heating is finished because the water temperature layer is smaller relative to a cold water layer and larger relative to a hot water layer, and meanwhile, the hot water layer at the top is not directly heated by the heating body and has small temperature difference with a heating area at the bottom. The phenomenon that the temperature of the top is too high and the temperature of the bottom is too low after heating is finished is avoided, and the quantity of the hot water is increased, so that the hot water output rate is greatly improved.

The formula Q of the surface heat load of the heating pipe is P/(pi DL), wherein the surface heat load of Q is the rated power of the heating pipe, D is the diameter of the heating pipe, and L is the length of the heating pipe. According to the surface heat load formula, when the surface heat load Q, the rated power P of the heating pipe and the diameter D of the heating pipe are fixed, the length L of the heating pipe is a fixed value. In the present embodiment, the heating body 9-2 is a spiral heating body. The bigger the spiral radius of the spiral heating body is, the smaller the upward height of the spiral heating body is, the more the heating body 9-2 is positioned at the lower part of the inner container, and the higher the hot water output efficiency is. The top of the spiral heating body is closed to form a section of structure which inclines upwards, when the spiral heating body is installed, the top part of the heating body 9-2 is firstly extended into the liner opening of the liner, and the spiral heating body is rotated to be screwed into the liner 4 along the spiral structure of the spiral heating body like a nut, and at the moment, the spiral diameter is larger than the liner opening, and the spiral heating body can also be installed into the liner 4.

Example two

As shown in fig. 4, the structure of the small kitchen appliance provided by this embodiment is substantially the same as that of the first embodiment, except that the water inlet pipe 7 and the water outlet pipe 5 are disposed at the top of the inner container 4. The small kitchen appliance with the upper water outlet can wrap the hot water layer area on the middle upper part except the water inlet and outlet nozzle, and has better structural heat preservation.

EXAMPLE III

As shown in fig. 5, the structure of the small kitchen appliance provided by this embodiment is substantially the same as that of the first embodiment, except that the heating body 9-2 is a rotary heating body. The more heating bodies are arranged at the lower part of the inner container, the more the improvement of the hot water output rate is facilitated. The highest position of the heating body adopting the three-layer convolution structure does not exceed the middle part of the inner container basically, and most of the heating bodies are positioned at the middle lower part of the inner container, so that the heat source gravity center of the heating pipe is greatly reduced, the hot water output rate is improved, and the condition that the temperature difference between the top temperature and the bottom temperature is too large due to the fact that the heating bodies are positioned at the middle upper part is avoided.

It will be understood by those skilled in the art from the foregoing description of the structure and principles that the present invention is not limited to the specific embodiments described above, and that modifications and substitutions based on the known art are intended to fall within the scope of the invention, which is defined by the claims and their equivalents. The details not described in the detailed description are prior art or common general knowledge.

Claims (10)

1. A small kitchen appliance comprising: the lower end of the inner container is provided with an opening for installing a heating element, and the inner container is provided with a water inlet pipe and a water outlet pipe; the heating device is characterized in that the heating body of the heating element and the water outlet of the water inlet pipe are arranged close to the opening, and the water inlet of the water outlet pipe is arranged close to the top of the liner; the outer wrapping of the inner container is provided with a heat insulation layer, the bottom of the heat insulation layer is provided with a groove serving as an electric component installation cavity, and an opening of the inner container extends into the groove.

2. The device as claimed in claim 1, wherein a flange cover is provided on the opening, and the heating element is fixed to the opening via the flange cover.

3. The small chef, as set forth in claim 2, wherein the heating element comprises: the flange is arranged on the flange and extends into the heating body in the inner container, and a wiring terminal connected with the heating body is exposed on the outer side of the flange.

4. The device of claim 3, wherein the heater is a spiral heater or a convolute heater.

5. The small kitchen appliance according to claim 3, wherein a blind pipe is provided on said flange; and a thermal breaker probe and a temperature controller probe are arranged on the blind pipe.

6. The small kitchen appliance according to claim 3, wherein a magnesium rod assembly is provided in the inner container, and one end of the magnesium rod assembly is connected to the flange through a support base.

7. The small kitchen appliance according to claim 3, wherein a liner opening sealing ring is provided between the opening of the liner and the flange.

8. The small kitchen appliance according to claim 1, wherein the water inlet pipe and the water outlet pipe are both disposed at the top or the bottom of the inner container.

9. The small kitchen appliance according to claim 1, wherein a service cover is detachably provided on a bottom of the electric component mounting chamber, and a water outlet is provided on the service cover.

10. The device of claim 1, wherein the insulating layer is a polyurethane foam.

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