CN111350835A

CN111350835A - Flow regulating assembly

Info

Publication number: CN111350835A
Application number: CN201811580605.7A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zhejiang Runcheng Intelligent Control Technology Co ltd
Current assignee: Zhejiang Runcheng Intelligent Control Technology Co ltd
Priority date: 2018-12-24
Filing date: 2018-12-24
Publication date: 2020-06-30

Abstract

The invention discloses a flow regulating assembly applied to household appliances, which comprises an outer shell, a valve core and a flow measuring element, wherein the outer shell comprises a first shell part and a second shell part which are integrally connected, the flow regulating assembly also comprises a driving motor, the driving motor is in transmission connection with the valve core, an end cover of the flow regulating assembly and the outer shell are relatively sealed and fixed, the first shell part is provided with a valve port part, the valve core can rotate relative to the valve port part and can regulate the flow area of the valve port part, the flow measuring element is rotatably arranged relative to the outer shell, the flow measuring element is positioned in an accommodating cavity formed in the second shell part, the accommodating cavity is communicated with an inlet and an outlet of the outer shell, and the valve core and the flow measuring element are integrated into a whole through an integral structure of the outer shell, so.

Description

Flow regulating assembly

Technical Field

The invention relates to a flow regulating component of household electrical appliance.

Background

The liquid heating mode that present applicant knows has static liquid heating mode, and static liquid heating mode generally adopts the heating pipe to heat the liquid that holds in the container, and under general condition, electric heating pipe need heat whole container interior liquid, and the flow change of liquid is related to heating temperature, and how to adjust the control flow change is one of the problem that waits to solve at present.

Disclosure of Invention

The invention aims to provide a flow regulating assembly which is relatively simple in structure and can measure flow change.

In order to realize the purpose, the following technical scheme is adopted: the utility model provides a flow regulation assembly, flow regulation assembly includes shell body, case, flow measurement element, and the shell body includes first casing portion, the second casing portion of integrative connection, flow regulation assembly still includes driving motor, this driving motor with the case transmission is connected, this flow regulation assembly's end cover with it is fixed relatively sealed between the shell body, first casing portion has a valve port portion, and this case can rotate this valve port portion relatively, can adjust the through-flow area of this valve port portion, flow measurement element for the shell body rotates the setting, and this flow measurement element is located the intracavity is held that forms in the second casing portion, should hold the chamber with the import and the export of shell body are linked together.

According to the technical scheme, the valve core and the flow measuring element are integrated into a whole through the integrated structure of the outer shell, the structure is relatively simple, and the flow measuring element is positioned in the outer shell and rotates, so that the flow change can be measured.

Drawings

Fig. 1 to 3 are schematic structural views of a heating apparatus according to an embodiment of the present invention;

fig. 4 to 5 are schematic structural views of a heating tube set of a heating apparatus according to still another embodiment of the present invention.

Detailed Description

In order that the technical solutions of the present invention will be more clearly understood, the present invention will be described in detail below with reference to the accompanying drawings in conjunction with specific embodiments. While the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to fig. 1 to 5, a heating device 100 according to the present invention can be applied to a situation that water needs to be heated, the heating device includes a heating tube assembly 1, the heating tube assembly includes a housing 11 and a heating tube 12, the housing is located at an outer peripheral side of the heating tube, a heating element is embedded in the heating tube, the heating element is electrically connected to a conductive portion outside the heating tube, the heating tube assembly forms a heating cavity, a first heating region 101 of the heating cavity is formed between an outer wall of the heating tube and an inner wall of the housing, a second heating region 102 of the heating cavity is formed in an inner space of the heating tube, a first opening 120 at one end of the heating tube is communicated with the first heating region, a second opening 121 at the other end of the heating tube is communicated with an inlet of the heating tube assembly, the first heating region is communicated with an outlet of the heating tube assembly, that is, a medium is heated by entering the heating tube first, and flows into an, the secondary heating of the medium is facilitated, the medium is uniformly mixed and flows out of the outlet, and the possibility of uneven cooling and heating is reduced; the heating tube set is provided with a heat conducting element 13 which is arranged close to the inlet, the heat conducting element is arranged in contact with a power element of a control board of the heating device, and when the power element generates heat, the heat conducting element can conduct heat to the inside of the heating tube set, so that the heating loss of the power element is reduced.

As an alternative, the second opening 121 at the other end of the heating tube is communicated with the outlet of the heating device, that is, the heating tube firstly passes through the first heating area outside the heating tube and then enters the second heating area inside the heating tube, and the heating tube directly flows out of the outlet after being heated, so that relatively rapid heating can be realized; the outer wall of the heating pipe comprises at least one flow guide convex part 122 and at least one flow guide groove 123, and/or the inner wall of the shell comprises at least one flow guide convex part and at least one flow guide groove, so that the turbulent flow effect is relatively increased, the heating path is lengthened, the temperature stability is facilitated, the insulating property is better when the heating element is embedded, and the heat conduction effect is not influenced. In the embodiment, at least part of the flow guide convex part on the inner wall of the shell continuously extends and forms, and the flow guide groove and the flow guide convex part are arranged in a staggered manner along the axial direction of the heating pipe group, so that a spiral flow channel is formed on the inner wall of the shell, and a heating path is relatively increased; the outer side of the heating pipe is provided with a groove part extending along the axis direction, and the groove part can be used for facilitating demoulding after the heating pipe is embedded and formed.

The first end cap portion 111 of the heating device comprises an inlet channel, which is in communication with the second opening, and is fixedly arranged with the heat conducting element 13, and is sealed therebetween, so that the heat conducting element can thermally contact the medium in the heating device, facilitating heat absorption. The heating device is provided with the sealing ring positioned on one side of the first end cover part and the heat conducting element, the part of the heating device is sealed outwards, the other side of the heat conducting element is in direct contact with the power element or is in indirect contact with the power element through the heat conducting layer to conduct heat, the heat conducting structure is simple and direct, and heat on the power element 2 can be conducted to a medium to some extent, so that waste heat or waste heat utilization is facilitated. The temperature sensing part of the temperature detection element of the heating device extends into the inlet channel, the end part of the heating pipe on the same side as the second opening and the first end cover part are arranged in a sealing mode, leakage can be reduced, temperature detection is carried out, and the temperature detection is provided for the controller. The control end of the temperature detection element 21 and the heat conduction element are both connected to the same control board, and the end part of the heating pipe on the same side as the second opening and the first end cover part are arranged in a sealing mode, so that insulation and isolation are achieved, and damage to the electric device due to medium leakage is prevented.

On the other hand, the inner wall of the shell 11 can be provided with no turbulent flow structure, and the shell is of an integral structure, so that the fluid can smoothly flow out after being heated; or as another scheme, the outer shell 11 includes a first shell 112 formed by injection molding and a second shell 113 formed by injection molding, and the first shell forms a part of the flow guiding protrusion and a part of the flow guiding groove integrally, the second shell forms another part of the flow guiding protrusion and another part of the flow guiding groove integrally, the first shell and the second shell are integrally connected into a whole, so that the inner wall of the outer shell forms a continuous flow channel, the first heating area is formed between the flow guiding protrusion and the outer wall of the heating tube, the distance between the flow guiding protrusion and the outer wall of the heating tube is less than 2mm or 1mm or less than 0.6mm or less than 0.5mm, the gap is small, the fluid passing through the heating assembly can be sufficiently heated, the flowing type heating of the fluid is realized, the gap of the heating area ensures the sufficient thermal contact of the flowing liquid, and the heat provided by the heating film structure can be better absorbed and better transferred to the heating cavity, thereby contributing to the improvement of the heating efficiency. More specifically, the water conservancy diversion convex part includes root base portion and protruding end, protruding end certainly root base portion outwards extends, and protruding end sets up with the inner wall of shell relatively, and the distance between the inner wall of this protruding end and shell is less than 0.4mm to allow the fluid of relative flow to pass through when reducing the clearance relatively, be favorable to promoting heating efficiency, when the water conservancy diversion convex part with helical configuration from the one end of shell extend to the other end of heating pipe in succession, the continuous vortex runner that forms reduces fluid resistance and can fully heat the fluid that overflows.

Of course, it is also possible that the heating pipe 12 and the housing 11 are both provided with flow guiding protrusions to form a flow guiding structure, the heating cavity is formed between the outer wall of the heating pipe and the inner wall of the housing, the minimum distance between the heating pipe and the outer wall of the housing is less than 2mm, 1mm, 0.6mm, 0.5mm, 0.4mm, and the like, specifically, the gap is defined as the vertical distance between the flow guiding protrusion and the inner wall or the outer wall of the opposite side, for example, the positions of the flow guiding protrusions arranged on the heating pipe and the housing are staggered with each other, so that the fluid can flow through the depth of the flow guiding groove as much as possible rather than only through the gap, that is.

The first shell 112 and the second shell 123 are welded and connected, the end of the heating pipe 12 on the second opening side is connected with the first end cover part of the heating device in a sealing manner, one end of the outer shell is arranged between the first end cover part in a sealing manner, the other end of the outer shell is arranged between the second end cover part of the heating device in a sealing manner, and therefore leakage of a medium is prevented when the medium circulates between the first heating area and the second heating area.

The heating pipe 12 comprises an insulating shell which is embedded and formed with a heating element, wherein the heating element is a conductive metal sheet or a conductive metal wire; insulating casing cladding is in the outside of conductive metal piece or conductive wire, and the conductive part exposes insulating casing, and this conductive part and heating device's wiring or lug welded fastening can make heating element fix a position firmly like this, and it is better to be inlayed the insulating nature including establishing, and the heat conduction effect is not influenced.

The heating pipe comprises a ceramic shell which is embedded and formed into an integral structure with a heating element, wherein the heating element is a conductive metal sheet or a conductive metal wire; the ceramic shell is coated on the outer side of the conductive metal sheet or the conductive metal wire, the conductive part is exposed out of the ceramic shell, the conductive part is welded and fixed with the wiring or the lug of the heating device, the heat conduction effect of the ceramic shell is better, the corrosion resistance is better, and harmful substances are not easy to diffuse into heating fluid after being heated.

It should be noted that, in addition to the ceramic tube, the heating tube 12 may be a heat-resistant plastic tube or metal tube, which is made of food grade material if used in a drinking device and meets the drinking standard, or a metal material or alloy material with good heat conductivity, such as aluminum, copper, silver, etc. Of course, the raised portion of the heating tube is not limited to a spiral structure, and may also be in various other arrangements, so that the fluid flows in a zigzag manner on the outer surface of the heating tube, the flow path is relatively extended, and the heating efficiency is improved. Wherein, the screw pitch of helical structure can be equidistance or variable interval for the heating effect is better. As another embodiment, the guiding grooves 123 may also be labyrinth-shaped channels, and two or more guiding protrusions 122 are disposed on the outer side of the heating tube 12 along the transverse direction of the heating tube 12, or two or more guiding grooves 123 are disposed on the outer side of the heating tube 12, the guiding grooves 123 and the guiding protrusions 122 are discretely disposed on the outer side of the heating tube 12, and the guiding protrusions and the guiding grooves are staggered in the transverse direction of the heating tube, so that the fluid is relatively uniformly distributed on the outer wall of the heating tube as much as possible, and each part is utilized as much as possible, so as to accelerate the heating speed of the fluid.

The heating device is also provided with a flow regulating component 3, the flow regulating component comprises an outer shell 31, a valve core 32 and a flow measuring element 33, the outer shell comprises a first shell part 311 and a second shell part 312 which are connected integrally, the flow regulating component also comprises a driving motor 34, the driving motor is in transmission connection with the valve core, the first shell part is provided with a valve port part, the valve core can rotate relative to the valve port part and can regulate the flow area of the valve port part, the flow measuring element is arranged in a rotating way relative to the outer shell, the flow measuring element is positioned in an accommodating cavity formed in the second shell part, the accommodating cavity is communicated with an inlet and an outlet of the outer shell, a flow measuring structure and a structure for controlling the flow of the valve core are simultaneously configured through the integrated structure, the integration degree is better, an end cover part arranged on the flow regulating component is fixed with the outer shell in a relatively sealed way, and, the medium circulated in the containing cavity of the second shell part can radiate outwards through the end cover part, so that the protection of the driving motor is facilitated, and the sealing ring is arranged between the end cover part and the shell body for sealing to prevent liquid from leaking.

The flow rate measuring element 33 can detect the flow rate value of the working medium conducted by the flow rate adjusting assembly by rotating relative to the outer shell, the driving motor 34 is positioned outside the outer shell 31, the power output part of the driving motor is mechanically connected with the valve core to realize transmission, the valve core can be controlled, and the flow rate measuring element is arranged, so that convenient flow rate measurement can be realized through transmission. The flow measuring element 33 comprises an impeller, a magnetic ring fixedly connected with the impeller, and a hall element arranged in the induction range of the magnetic ring, wherein the magnetic ring at least comprises a pair of magnetic poles, each pair of magnetic poles comprises an S pole and an N pole which are symmetrically arranged, in other embodiments, the magnetic ring can also be a magnetic device, the magnetic poles which are staggered are symmetrically arranged, the flow velocity or the flow can be measured through the change of the hall induction magnetic ring, the outer shell 31 and the hall element are relatively fixedly arranged, and the inner wall of the outer shell is provided with a groove for accommodating the hall element; or, the end cover and the Hall element are fixedly arranged relatively, the Hall element is located in the magnetic field range of the magnetic ring so as to be accurately sensed, and the Hall element waterproof structure is arranged, so that an electric signal can be generated according to the change rule of the magnetic poles and transmitted to the control module. Specifically, the water outlet side of the valve core 32 is communicated with the water inlet side of the impeller, or the water outlet side of the impeller is communicated with the water inlet or the water outlet of the heating device, and the water outlet side of the impeller and the water inlet or the water outlet of the heating device are connected in series in terms of a flow path; in the embodiment, the impeller is sleeved outside the rotating shaft of the valve core or the impeller is integrally connected with the valve core, and the water outlet side of the impeller is communicated with the water inlet or the water outlet of the heating device, so that the overall size of the flow regulating assembly can be reduced.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

Claims

1. The flow regulating assembly is characterized by comprising an outer shell, a valve core and a flow measuring element, wherein the outer shell comprises a first shell part and a second shell part which are integrally connected, the flow regulating assembly further comprises a driving motor, the driving motor is in transmission connection with the valve core, an end cover part of the flow regulating assembly and the outer shell are relatively fixed in a sealing mode, the first shell part is provided with a valve port part, the valve core can rotate relative to the valve port part and can regulate the flow area of the valve port part, the flow measuring element is arranged in a rotating mode relative to the outer shell, the flow measuring element is located in a containing cavity formed in the second shell part, and the containing cavity is communicated with an inlet and an outlet of the outer shell.

2. The flow regulating assembly according to claim 1, wherein the flow measuring element is capable of detecting the flow value of the working medium conducted by the flow regulating assembly by rotating relative to the outer casing, the driving motor is located outside the outer casing, and the power output part of the driving motor is mechanically connected with the valve core to realize transmission.

3. A flow regulating assembly according to claim 1 or 2, wherein the flow measuring element comprises an impeller, a magnetic element fixedly connected to the impeller, a hall element arranged within the sensing range of the magnetic element, the magnetic element comprising at least one pair of magnetic poles comprising symmetrically arranged S and N poles.

4. The flow regulating assembly according to claim 3, wherein the outer housing is fixedly disposed relative to the Hall element, and the inner wall of the outer housing has a recess for receiving the Hall element.

5. The flow adjustment assembly of claim 4, wherein either the end cap is fixedly disposed relative to the Hall element.

6. The flow regulating assembly according to claim 3, wherein the water outlet side of the valve cartridge is in communication with the water inlet side of the impeller, and the water outlet side of the impeller is in communication with the water inlet or outlet of the heating device.

7. The flow regulating assembly according to claim 3, wherein the impeller is sleeved outside the rotating shaft of the valve core or the impeller is integrally connected with the valve core, and the water outlet side of the impeller is communicated with the water inlet or the water outlet of the heating device.