CN208919455U - Memorial alloy flow sensor and wall-hung boiler inlet valve - Google Patents

Abstract

The utility model discloses a kind of memorial alloy flow sensor and wall-hung boiler inlet valves, including flow sensor shell, cover Hall sensor in flow sensor housing tip, the magnet ring with circlip, impeller are equipped in the flow sensor shell from top to bottom, divides water wheels, flat strainer, the memorial alloy flow with O-ring I adjusts component；The memorial alloy flow adjusts component O-ring I and flow sensor shell interference fit joint；It includes that the flow for being located at the lowermost flow adjusting water inlet and being topmost adjacent to flat strainer adjusts water outlet that the memorial alloy flow, which adjusts component, and core assembly is joined together by spring base and valve seat interference riveting；The core assembly includes spool, is inserted in memory alloy spring in valve core case, spring base is fixed at spool upper end flange with tetrafluoro split washer.The utility model realizes that wall-hung boiler when inflow temperature changes, automatically adjusts flow of inlet water, realizes the purpose of output constant-temperature hot water.

Description

Memorial alloy flow sensor and wall-hung boiler inlet valve

Technical field

The utility model belongs to flow and adjusts field of sensing technologies, and in particular to a kind of application memory alloy spring is flowed Measure the flow sensor and its valve body adjusted.

Background technique

Wall-hung boiler flow sensor is used to occur the logical signal of burnt gas wall hanging furnace life water flow, according to the size of water flow Command adapted thereto is issued with on-off to control the working condition of gas valve.

Such as the utility model patent that patent announcement number is CN204228226U, a kind of flow sensor, including stream are disclosed Quantity sensor shell covers Hall sensor in flow sensor housing tip；In the flow sensor shell from top to bottom Equipped with the magnet ring with circlip, impeller, divide water wheels, flat strainer, divide water wheels fixing seat with O-ring I, divides the water wheels fixing seat other end It is also equipped with restrictor ring and is cased with filter；Described point of water wheels fixing seat and flow sensor shell are sealed parallel connection by O-ring I therewith It connects；The flow sensor hull outside is equipped with screw thread and O-ring slot simultaneously, can assemble O-ring II.It can effectively solve proportion expression Flow sensor causes actual flow to incude insensitive problem when inconsistent and small flow with rated flow because of leakage.

But above-mentioned flow sensor is equipped with restrictor ring, and after reaching rated flow, stability of flow is flowed when inflow temperature variation Amount is basically unchanged, control gas valve working condition signal it is also constant, cause bathroom water leaving water temperature with inflow temperature variation and Variation needs to manually adjust flow according to being cold to warm up to reach suitable bathroom coolant-temperature gage.

Summary of the invention

The purpose of the utility model is to provide a kind of novel in design, simple memorial alloy flow sensors of structure, can have Effect solves flow sensor because inflow temperature variation cannot automatically adjust water flow, leads to the problem that leaving water temperature is unstable.

Another purpose of the utility model is to provide a kind of wall-hung boiler water inlet using the memorial alloy flow sensor Valve.

Memorial alloy flow sensor, including flow sensor shell, cover flow sensor housing tip Hall biography Sensor is equipped with the magnet ring with circlip, impeller in the flow sensor shell from top to bottom, divides water wheels, flat strainer, band O shape The memorial alloy flow of circle I adjusts component；The memorial alloy flow adjusts component O-ring I and flow sensor shell Interference fit joint.

The memorial alloy flow adjusting component includes to be located at the lowermost flow to adjust water inlet and the top and put down The flow that strainer is adjacent to adjusts water outlet, and core assembly is joined together by spring base and valve seat interference riveting.

The core assembly includes spool, is inserted in memory alloy spring, spring base tetrafluoro split washer in valve core case It is fixed at spool upper end flange.

The valve seat with fan-shaped or round circumferentially equally distributed channel is provided on strainer binding face, channel is away from circle Heart minimum range is slightly larger than the outer diameter of spool flange, to guarantee to pass through when exporting aperture minimum almost without medium, makes opening for valve port It closes and flow is adjusted effectively.

Wall-hung boiler inlet valve, including water inlet valve body and the memorial alloy flow sensor as described in the first purpose；It is described Memorial alloy flow sensor be installed on the water inlet end into water valve body, the water inlet end spool plane of flow sensor is with water inlet The flow-limiting valve mouth of temperature change and inlet valve is in close contact or is detached from.

The utility model has the advantages that following prominent and good effect compared with prior art:

1, the spring that the utility model can be made with one of memory alloy material, dexterously utilizes material property, reaches Flow is adjusted, realizes the purpose of output constant-temperature hot water, compared with original is dependent on costly and complicated electron controls technology significantly Reduce cost.

As long as it is that can reach flow adjusting that 2, the utility model replaces individual part compared with former constant current flow sensor Function, application market are big.

The utility model is suitable for brass or engineering plastics water route module etc. to the work for requiring flow monitoring various fluids It is matched in condition.

Detailed description of the invention

Fig. 1 is the overall structure cross-sectional view of the utility model；

Fig. 2 is the utility model thread connection schematic view of the mounting position in wall-hung boiler inlet valve.

11. Hall sensors, 12. flow sensor shells, 13. circlips, 14. magnet rings, 15. impellers, 16. points of water in figure Wheel, 17. flat strainers, 18.O shape circle I, 19. memorial alloy flows adjust component, 191. valve seats, 192. core assemblies, 1921. valves Core, 1922. memory alloy springs, 1923. spring bases, 1924. tetrafluoro retaining rings, 1. memorial alloy flow sensors, 2. water inlets Valve body, 3. flows adjust water inlet, 4. current limliting valve ports, 5. flows and adjust water outlet, 6. valve body water outlets.

Specific embodiment

Referring to FIG. 1, the utility model patent includes flow sensor shell 12, covers and push up in flow sensor shell 12 The Hall sensor 11 at end, be equipped in the flow sensor shell from top to bottom the magnet ring 14 with circlip 13, impeller 15, point Water wheels 16, flat strainer 17, the memorial alloy flow with O-ring I 18 adjust component 19；The memorial alloy flow adjusts component 19 use O-ring I 18 and 12 interference fit joint of flow sensor shell.

The memorial alloy flow adjust component 19 include be located at the lowermost flow adjust water inlet 3 and the top with The flow that flat strainer 17 is adjacent to adjusts water outlet 5, and core assembly 192 is unified by spring base 1923 and 191 interference riveting of valve seat One.

The core assembly 192 includes spool 1921, is inserted in memory alloy spring 1922, spring base in spool 1921 1923 are fixed at 1921 upper end flange of spool with tetrafluoro split washer 1924.

The valve seat 191 with fan-shaped or round circumferentially equally distributed channel is provided on 17 binding face of strainer, lead to Track pitch center of circle minimum range is slightly larger than the outer diameter of spool flange, to guarantee to pass through when exporting aperture minimum almost without medium, makes valve The opening and closing of mouth adjusts flow effective.

Technical solutions of the utility model are completely described below in conjunction with the embodiment in such as Fig. 2, it is clear that described Embodiment is only the utility model a part of the embodiment, rather than whole embodiments, is never used as the utility model and its answers With or any restrictions that use.The other embodiments obtained under the premise of not creative labour belong to the utility model protection model It encloses.

As shown in Fig. 2, the memorial alloy flow sensor 1 is installed on the water inlet end into water valve body 2, flow sensor 1 water inlet 3 is in close contact in set temperature with the current limliting valve port 4 on water inlet valve body 2.Valve inleting water mouth and flow adjust into Inlet water stream degree in a vertical angle can prevent intake pressure from sliding to core assembly 192 and generate interference.

When work, fluid adjusts water inlet 3 by the flow on water inlet valve body 2 and enters memorial alloy flow adjusting component 19.When inflow temperature changes, flow adjusts the coefficient of elasticity of the memory alloy spring 1922 in component 19 according to its material Linear change occurs for characteristic, and elongated with temperature raising 1922 axial length of memory alloy spring, elastic force becomes larger, so that core assembly 192 is mobile far from valve seat 191, and flow adjusts outlet aperture and increases at this time, and flow also increases；When inflow temperature reduces, memory 1922 axial length of alloy spring shortens, and elastic force becomes smaller, and valve sealing force reduces, and 1921 plane of water jet propulsion spool is detached from current limliting valve port 4, so that core assembly 192 is mobile close to valve seat 191, flow adjusts outlet aperture and reduces at this time, and flow also becomes smaller.

The inside that the water flow that water outlet 5 comes out enters flow sensor shell 12 is adjusted from flow, by valve seat 191 and is divided Flat strainer 17 between water wheels 16 filters, certain due to dividing the impeller of water wheels 16 to have into the disturbance chamber divided between water wheels 16 Tilt angle pushes the rotation of impeller 15, drives so the generating unit that flows to of fluid divides axial-rotation after excessive water wheels 16 Magnet ring 14 rotates, and magnet ring 14 has 3 pairs of magnetic poles.Magnet ring 14 incudes with by the outer end Hall sensor 11 that is attached thereto, by with The frequency translation that the connected wall-hung boiler control panel of Hall sensor 11 detects that impeller 15 rotates reversal of magnetism is corresponding flow, Last fluid is flowed out from valve body water outlet 6, and this completes fluid flow sizes accurately to measure.Control panel is according to reception Signal can control gas valve firepower size, reach the stabilization of leaving water temperature.

Claims (5)

1. memorial alloy flow sensor, including flow sensor shell (12), Hall in flow sensor housing tip is covered Sensor (11)；Magnet ring (14), impeller with circlip (13) are equipped in the flow sensor shell (12) from top to bottom (15), water wheels (16), flat strainer (17), memorial alloy flow is divided to adjust component；It is characterized by: the memorial alloy flow Component (19) are adjusted with O-ring I (18) and flow sensor shell (12) interference fit joint.

2. memorial alloy flow sensor according to claim 1, it is characterised in that: the memorial alloy flow is adjusted Component (19) includes to be located at the flow that the lowermost flow adjusts water inlet (3) and is topmost adjacent to flat strainer (17) to adjust out The mouth of a river (5), core assembly (192) are joined together by spring base (1923) and valve seat (191) interference riveting.

3. memorial alloy flow sensor according to claim 2, it is characterised in that: core assembly (192) packet Containing spool (1921), memory alloy spring (1922), spring base (1923) tetrafluoro split washer are inserted in spool (1921) (1924) it is fixed at the flange of spool (1921) upper end.

4. memorial alloy flow sensor according to claim 2, it is characterised in that: the valve seat (191) with filter Fan-shaped or round circumferentially equally distributed channel is provided on net (17) binding face, channel is slightly larger than spool far from center of circle minimum range The outer diameter of flange.

5. wall-hung boiler inlet valve, it is characterised in that: including water inlet valve body (2) and as described in any one of claim 1-4 Memorial alloy flow sensor (1)；The memorial alloy flow sensor (1) is installed on the water inlet end into water valve body (2).