CN212274237U

CN212274237U - Liquid quick heating device

Info

Publication number: CN212274237U
Application number: CN202020526622.9U
Authority: CN
Inventors: 吕宗权; 李宁; 周祥勋
Original assignee: NINGBO AIJIA ELECTRICAL APPLIANCE CO Ltd
Current assignee: NINGBO AIJIA ELECTRICAL APPLIANCE CO Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2021-01-01
Anticipated expiration: 2030-04-10

Abstract

The utility model relates to a liquid rapid heating device, include: a sleeve; the heating body is arranged in the sleeve, the extension direction of the heating body is consistent with that of the sleeve, a diversion trench is arranged on the outer wall of the heating body along the extension direction of the heating body, and a water flow channel is formed by a gap between the diversion trench of the heating body and the inner wall of the sleeve; the heating body is characterized in that a heat transfer element is attached to the outer wall of the heating body, the inner wall of the sleeve is provided with a part which is tightly attached to the heat transfer element, and a temperature sensing device is arranged on the attached part. The heat transfer platform can be closely attached to the temperature sensing platform on the sleeve wall, so that heat generated by the heating body can be quickly transmitted to the temperature sensing platform of the sleeve, the temperature distribution on the temperature sensing platform is more uniform, and the temperature detection of the temperature sensing device is more accurate.

Description

Liquid quick heating device

Technical Field

The utility model relates to a heating device technical field especially relates to a liquid rapid heating device.

Background

The existing brewing machine such as a milk machine or a coffee machine usually adopts a constant temperature type for hot water supply, namely, a heater is arranged in a water tank to keep the water in the water tank at a set temperature for a long time, so that the heater needs to work repeatedly for a long time during non-brewing, electric energy is wasted, the heater is easy to damage, and in addition, the water in the water tank is repeatedly heated for a long time to cause the water quality to be deteriorated, thereby affecting the quality of brewed drinks.

In order to solve the technical problem, an instant heating type automatic brewing machine is provided in the market, and the instant heating type automatic brewing machine is provided with an instant heating type heating device, wherein the instant heating type heating device is mainly used for prolonging a water flow path and increasing the heating time of water flow by arranging a spiral water flow channel or a labyrinth water flow channel, so that the water flow can be rapidly heated to a set temperature. Such a heating device is disclosed in the Chinese utility model patent with the application number of CN201720952479.8 (No. CN208339383U) and the Chinese invention patent with the application number of CN201911161814.2 (No. CN110762834A) as a heating element assembly and an electric heating water drinking device using the heating element assembly.

In the chinese patent application No. CN201911161814.2 (publication No. CN110762834A) of "a heating element assembly and an electric heating drinking water apparatus using the heating element assembly", the heating element assembly includes a sleeve, a guiding cylinder installed in the sleeve, a heating rod installed in the center of the guiding cylinder, and pipe joints respectively provided at the upper and lower ends of the sleeve and the guiding cylinder, a water flow channel communicated with the pipe joints is provided between the sleeve and the guiding cylinder, and a spiral or labyrinth guiding groove is provided on the outer wall of the guiding cylinder. However, in practical use, the temperature of the temperature control element on the outer wall of the sleeve of the electric heating device is not accurately detected, and the reason is that, in addition, the spiral or labyrinth diversion trench is formed on the outer wall of the diversion trench of the heating rod, the temperature of the outer edge of the trench rib is different from the temperature of the concave portion of the diversion trench, and the temperature transmitted to the sleeve wall is also different, so that the temperature on the sleeve wall is not uniform, and the position of the temperature sensing device of the existing product on the outer wall of the sleeve is not fixed, so that when the temperature sensing device is arranged at different positions of the sleeve, the outer wall of the heating body diversion trench corresponding to the temperature sensing device may be the outer edge of the trench rib of the diversion trench or may be the concave portion corresponding to the diversion trench, and thus the real-time temperature of the heating body cannot be accurately.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a liquid rapid heating device that enables the heating member that has the guiding gutter and the cover is established and is passed heat fast between the sleeve in its outside and consequently the temperature sensing.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a liquid rapid heating device comprising:

a sleeve having a water inlet and a water outlet;

the heating body is arranged in the sleeve, the extension direction of the heating body is consistent with that of the sleeve, a diversion trench is arranged on the outer wall of the heating body along the extension direction of the heating body, and a water flow channel communicated with the water inlet and the water outlet is formed by a gap between the diversion trench of the heating body and the inner wall of the sleeve;

the heating body is characterized in that a heat transfer element is attached to the outer wall of the heating body, the inner wall of the sleeve is provided with a part which is tightly attached to the heat transfer element, and a temperature sensing device is arranged on the attached part.

In order to lengthen the heating water path, the diversion trench is preferably arranged in a spiral manner or a labyrinth manner, and the outer edge of the diversion trench is tightly attached to the inner wall of the sleeve.

In order to make the heat transfer element more quickly conform to the water temperature, the inner side of the heat transfer element may also have a protrusion extending into the flow guide groove.

In order to allow a faster heat transfer between the sleeve and the heat transfer element, and also for ease of manufacture, the inner wall of the sleeve and the heat transfer element are preferably in close planar contact.

As an improvement, the joint part of the sleeve is a strip-shaped temperature sensing platform formed by radially inwards recessing the wall of the sleeve and arranging the joint part along the extension direction of the sleeve, and the joint part of the heating body is also a strip-shaped heat transfer platform matched with the joint part of the sleeve. The temperature sensing platform and the heat transfer platform are arranged in a strip shape, so that a larger space is provided for placing a temperature sensing end of the temperature sensing device, and the temperature sensing device is conveniently and reasonably arranged; and the temperature sensing platform of the sleeve is formed by radially inwards sinking the wall of the sleeve, so that the heat transfer path from the heating body to the wall of the sleeve is correspondingly reduced, the heat transfer speed is improved, and the temperature detection of the temperature sensing device is more sensitive and accurate.

In order to avoid the blockage of the diversion trenches or the influence on the circulation effect of the diversion trenches caused by the arrangement of the heat transfer platform, the heat transfer platform spans at least two adjacent diversion trenches in the extension direction of the heating body, wherein an avoiding notch penetrating through the corresponding two adjacent diversion trenches is formed in the position of the heat transfer platform, which is combined with the outer edge of the corresponding diversion trench.

In order to facilitate processing of the diversion trench and the heat transfer platform of the heating body, the heating body comprises an electric heating tube and a die-casting aluminum layer wrapped outside the electric heating tube, and the diversion trench and the heat transfer platform are formed on the die-casting aluminum layer of the heating body. The die-cast aluminum layer and the electric heating tube can be formed into an integral piece through die casting; or, the die-cast aluminum layer and the electric heating tube are detachable assembled separate pieces. Specifically, a suitable processing and forming mode can be selected according to the shape of the heating body.

In order to further improve the accuracy of temperature sensing of the temperature sensing device and facilitate the temperature sensing device to be firmly fixed on the barrel, the outer surface of the temperature sensing platform of the sleeve is of a plane structure, the temperature sensing device is tightly bound on the sleeve through the fixing clamp, and the temperature sensing end of the temperature sensing device is attached to the outer surface of the temperature sensing platform.

In order to facilitate the arrangement of a plurality of temperature sensing devices, the number of the heat transfer platforms of the heating body is two, and the number of the temperature fuses on the sleeve is also two correspondingly. One of the two temperature sensing platforms can be provided with a temperature controller, and the other temperature sensing platform can be provided with a temperature fuse, so that the safety of the heating device is improved.

In order to reduce the heat loss of the heating device, the heating device further comprises a heat insulation shell sleeved outside the sleeve, wherein the heat insulation shell comprises a first half shell and a second half shell buckled on the first half shell. The heat-insulating shell is formed by buckling the two half shells, so that the assembly of the heating device is facilitated.

Compared with the prior art, the utility model has the advantages that: the heat transfer element attached to the heating body can be tightly attached to the corresponding part on the inner wall of the sleeve, so that heat generated by the heating body can be quickly transmitted to the wall of the sleeve, the temperature distribution on the wall of the sleeve is more uniform, and the temperature detection of the temperature sensing element correspondingly arranged on the sleeve is more accurate.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic perspective view of an embodiment of the present invention (omitting the heat-insulating housing);

FIG. 3 is a side view of the embodiment of the present invention after it is erected;

fig. 4 is an exploded view of an embodiment of the present invention;

fig. 5 is a schematic perspective view of a heating body according to an embodiment of the present invention (the guiding groove is a spiral guiding groove);

fig. 6 is a side view of an embodiment of the invention;

fig. 7 is a schematic perspective view of a heating body according to an embodiment of the present invention (the guiding groove is a labyrinth guiding groove);

fig. 8 is a side view of a sleeve according to an embodiment of the present invention;

fig. 9 is a transverse cross-sectional view of an embodiment of the present invention (the heat insulating housing and the temperature sensing device are not shown);

fig. 10 is a longitudinal cross-sectional view of an embodiment of the invention (where two temperature sensing devices are located on the same side of the sleeve).

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Referring to fig. 1 to 10, a liquid rapid heating apparatus includes a sleeve 10, a heating body 20, a temperature sensing device, and a heat insulation housing 40, wherein the heating body 20 is disposed in the sleeve 10, an extending direction of the heating body 20 is the same as an extending direction of the sleeve 10, and a water flow channel 30 for passing water is formed between an outer wall of the heating body 20 and an inner wall of the sleeve 10.

Referring to fig. 4, in this embodiment, a first connector 12 and a second connector 13 are respectively connected to two ports of the sleeve 10, and two ends of the heating body 20 penetrate through the corresponding connectors to form terminals. The two connecting heads are respectively provided with a water inlet 101 and a water outlet 102, a sealing silica gel sleeve 14 is further arranged between the two ports of the sleeve 10 and the corresponding connecting heads, and the sealing silica gel sleeve 14 is in sealing fit with the ports of the sleeve 10, the corresponding connecting heads and the heating body 20 so as to avoid water leakage.

The heating body 20 is provided on its outer wall with guide grooves 200 arranged spirally or in a labyrinth along its extending direction, such as spiral guide grooves 200 shown in fig. 5 and labyrinth guide grooves 200 shown in fig. 7. Specifically, the outer edge of the guiding groove 200 is tightly attached to the inner wall of the sleeve 10, and a spiral water flow channel 30 or a labyrinth water flow channel 30 is formed in a gap between the guiding groove 200 of the heating body 20 and the inner wall of the sleeve 10, wherein the water flow channel 30 is communicated with the water inlet 101 and the water outlet 102 on the sleeve 10 (connector).

In order to facilitate the detection of the temperature of the heating body 20 and avoid the dry burning problem, a heat transfer element 21 is attached to the outer wall of the heating body 20, wherein the heat transfer element 21 has a protrusion on the inner side thereof and extends into the guiding groove 200, so that the heat transfer element 21 can more quickly keep consistent with the water temperature, correspondingly, in the present embodiment, the heat transfer element 21 is a heat transfer platform 21 formed on the outer wall of the heating body 20 (i.e. the heat transfer element 21 and the heating body 20 are an integral piece), as shown in fig. 6 and 7 in detail; the wall of the sleeve 10 is provided with a temperature sensing platform 11 (see fig. 8 in detail), the position of the heat transfer platform 21 of the heating body 20 corresponds to the position of the temperature sensing platform 11 of the sleeve 10, and the two are tightly attached to each other (see fig. 9), so that the heat of the heating body 20 can be rapidly transferred to the temperature sensing platform 11 of the sleeve 10, and correspondingly, the outer surface of the temperature sensing platform 11 of the sleeve 10 is provided with a temperature sensing device, which can be a temperature controller 51, a temperature fuse 52 and other devices.

Referring to fig. 9 and 10, in the present embodiment, the inner surface of the temperature sensing platform 11 of the sleeve 10 is a planar structure, and the outer surface of the heat transfer platform 21 of the heating body 20 is a planar structure, and the size and shape of the two are substantially the same, that is, the temperature sensing platform of the sleeve 10 and the heat transfer platform 21 of the heating body 20 are tightly attached in a planar manner. On the other hand, the outer surface of the temperature sensing platform 11 of the sleeve 10 is also a flat surface structure, in which the temperature sensing device is tightened on the outer peripheral wall of the sleeve 10 by an annular fixing clip 15, and the temperature sensing end of the temperature sensing device is bonded to the outer surface of the temperature sensing flat surface, as shown in fig. 3 and 4 in detail.

Referring to fig. 5 and 7, in the present embodiment, the sleeve 10 is cylindrical, the temperature sensing platform 11 on the wall of the sleeve 10 is a strip-shaped platform arranged along the extending direction of the sleeve 10, and correspondingly, the heat transfer platform 21 of the heating body 20 is also a strip-shaped platform matched with the heat transfer platform 21. The wall surface position of the sleeve 10 for placing the temperature sensing device is set to be a platform structure (plane structure), and compared with the prior art that the wall of the sleeve 10 is of an arc surface structure, the temperature sensing device can be fully contacted with the temperature sensing platform, the temperature detection is more accurate, and the temperature sensing device is more firmly fixed. More specifically, the temperature sensing platform 11 in this embodiment is formed by radially inwardly recessing the wall of the sleeve 10, and this structural arrangement also correspondingly reduces the heat transfer path from the heating body 20 to the wall of the sleeve 10, and increases the heat transfer speed, so that the temperature detection of the temperature sensing device is more sensitive and accurate.

In this embodiment, for the spiral guiding grooves 200 of the heating body 20, the heat transfer platform 21 spans at least two adjacent guiding grooves 200 in the extending direction of the heating body 20, and in order to avoid the blocking of the guiding grooves 200 or the influence on the circulation effect of the guiding grooves 200 caused by the arrangement of the heat transfer platform 21, the heat transfer platform 21 is provided with an avoiding notch 22 penetrating through the corresponding two adjacent guiding grooves 200 at the position where the heat transfer platform is combined with the outer edge of the corresponding guiding groove 200, as shown in fig. 5 and 6 in detail. The guiding groove 200 of the heating body 20 may also be a labyrinth guiding groove 200, wherein the heat transfer platform 21 is disposed on the outer wall of the heating body 20 having the labyrinth guiding groove 200, and it can be understood that the heat transfer platform 21 is disposed on the outer wall of the heating body 20 at a position corresponding to a region avoiding the labyrinth guiding groove 200, that is, when the labyrinth guiding groove 200 of the heating body 20 is designed, a certain region which does not interfere with the labyrinth guiding groove 200 may be left on the outer wall surface of the heating body 20 for forming the heat transfer platform 21, as shown in fig. 7 in detail.

Referring to fig. 4, the heating body 20 includes an electric heating tube 23 and a die-cast aluminum layer 24 wrapped around the electric heating tube 23. The above-mentioned channels 200 and heat transfer lands 21 are molded on the die-cast aluminum layer 24 of the heating body 20. Specifically, in the present embodiment, the die-cast aluminum layer 24 and the electrical heating tube 23 may be die-cast into an integral piece, or the die-cast aluminum layer 24 and the electrical heating tube 23 may be detachable assembled into a separate piece, that is, the die-cast aluminum layer 24 is processed into the corresponding diversion trench 200 and the heat transfer platform 21 by an aluminum bar machine, and then assembled and fixed with the electrical heating tube 23.

In the present embodiment, there are two heat transfer platforms 21 of the heating body 20, and there are two temperature sensing platforms 11 on the sleeve 10. In this way, the temperature controller 51 may be disposed on one of the two temperature sensing platforms 11, and the thermal fuse 52 may be disposed on the other one, thereby improving the safety of the heating device.

The sleeve 10 in this embodiment may be a straight pipe type or a bent pipe type. Specifically, it can be selected according to the actual requirement or the use environment, and when a longer water flow path is required, in order to reduce the overall occupied space of the heating device, the sleeve 10 can be configured as a bent pipe type, such as a V-shaped, U-shaped, W-shaped or other bent shapes.

Referring to fig. 4, the thermal insulation casing 40 of the present embodiment is sleeved outside the sleeve 10, specifically, may be made of a plastic material, and the thermal insulation casing 40 is disposed to reduce the heat loss of the heating device. Specifically, the thermal insulation housing 40 includes a first half 41 and a second half 42 that is fastened to the first half 41. The heat-insulating shell 40 is formed by buckling two half shells, so that the assembly of the heating device is facilitated.

The heat transfer platform that sets up on this embodiment liquid rapid heating device's the heating member can closely laminate with the temperature sensing platform of setting on the cover barrel wall, and the heat that the heating member produced can convey to telescopic temperature sensing platform fast like this on, and temperature distribution is also more even on the temperature sensing platform for the temperature that corresponds the temperature sensing device that sets up on the temperature sensing platform detects more accurately. And the heat transfer platform arranged on the outer wall of the heating body can avoid the diversion trench without influencing the circulation of water flow, so that the water flow path can be effectively prolonged, and the heating efficiency of the water flow is improved.

Claims

1. A liquid rapid heating device comprising:

a sleeve (10) having a water inlet (101) and a water outlet (102);

the heating body (20) is arranged in the sleeve (10), the extending direction of the heating body is consistent with the extending direction of the sleeve (10), a diversion trench (200) is formed in the outer wall of the heating body (20) along the extending direction of the heating body, and a water flow channel (30) communicated with the water inlet (101) and the water outlet (102) is formed by a gap between the diversion trench (200) of the heating body (20) and the inner wall of the sleeve (10);

the method is characterized in that: the heating body (20) is characterized in that a heat transfer element (21) is attached to the outer wall of the heating body, the inner wall of the sleeve (10) is provided with a part which is tightly attached to the heat transfer element (21), and a temperature sensing device is arranged on the attached part.

2. A device for rapid heating of liquids as claimed in claim 1, characterized in that: the flow guide groove (200) is spirally arranged or arranged in a labyrinth way, and the outer edge of the flow guide groove (200) is tightly attached to the inner wall of the sleeve (10).

3. A device for rapid heating of liquids as claimed in claim 1, characterized in that: the inner side of the heat transfer element (21) is provided with a convex part which extends into the diversion trench (200).

4. A device for rapid heating of a liquid according to claim 1, 2 or 3, characterized in that: the inner wall of the sleeve (10) is tightly attached to the heat transfer element (21) in a plane manner.

5. A device for rapid heating of liquids as claimed in claim 4, characterized in that: the joint part of the sleeve (10) is a strip-shaped temperature sensing platform (11) formed by radially inwards recessing the wall of the sleeve (10) and arranging the sleeve along the extension direction of the sleeve (10), and the joint part of the heating body (20) is also a strip-shaped heat transfer platform which is matched with the joint part.

6. A device for rapid heating of liquids as claimed in claim 5, characterized in that: the heat transfer platform spans at least two adjacent guide grooves (200) in the extension direction of the heating body (20), wherein the heat transfer platform is provided with an avoidance notch (22) penetrating through the corresponding two adjacent guide grooves (200) at the position of combining with the outer edge of the corresponding guide groove (200).

7. A device for rapid heating of liquids as claimed in claim 5, characterized in that: the heating body (20) comprises an electric heating tube (23) and a die-casting aluminum layer (24) wrapped outside the electric heating tube (23), and the diversion trench (200) and the heat transfer platform are formed on the die-casting aluminum layer (24) of the heating body (20).

8. A device for rapid heating of liquids as claimed in claim 5, characterized in that: the outer surface of the temperature sensing platform (11) of the sleeve (10) is of a plane structure, the temperature sensing device is tightly bound on the sleeve (10) through a fixing clamp (15), and the temperature sensing end of the temperature sensing device is attached to the outer surface of the temperature sensing platform (11).

9. A rapid liquid heating apparatus according to claim 5, wherein: the number of the heat transfer platforms of the heating body (20) is two, and the number of the temperature sensing platforms (11) on the sleeve (10) is also two correspondingly.

10. A rapid liquid heating apparatus according to claim 4, wherein: still establish including the cover heat preservation shell (40) outside sleeve (10), this heat preservation shell (40) include first half shell (41) and lock second half shell (42) on first half shell (41).