CN203432064U - Instant-heating type fluid heating structure with differential pressure switch and electricity-proof walls - Google Patents
Instant-heating type fluid heating structure with differential pressure switch and electricity-proof walls Download PDFInfo
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- CN203432064U CN203432064U CN201320560005.0U CN201320560005U CN203432064U CN 203432064 U CN203432064 U CN 203432064U CN 201320560005 U CN201320560005 U CN 201320560005U CN 203432064 U CN203432064 U CN 203432064U
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Abstract
The utility model provides an instant-heating type fluid heating structure with a differential pressure switch and electricity-proof walls. The instant-heating type fluid heating structure comprises a fluid flowing mechanism, a cylindrical thick film circuit heating mechanism and the differential pressure switch, wherein the electricity-proof walls are respectively arranged at two ends of the heating mechanism, an annular or spiral flowing channel is arranged inside the heating mechanism, a pressure sensing cavity of the differential pressure switch is divided into two non-communicated portions by an adhesive film, one side of the pressure sensing cavity is communicated with the fluid inlet end, and the other side of the pressure sensing cavity is communicated with an outlet at the throat position of a Venturi tube arranged at the fluid outlet end. By adopting the scheme, the sensitivity of the differential pressure switch is improved, and synchronous 'flowing' and 'heating' of fluid of an instant-heating type electrical heating product can be ensured. By adopting a cylindrical thick film circuit heating mode, a product structure is compact, and the heating effect is ideal. Due to the fact that the structure is provided with the electricity-proof walls, leakage current can be reduced to be a limiting value below 0.02mA/Kw, and the personal safety of a user can be fully guaranteed.
Description
Technical field
The utility model relates to quick heat type fluid calandria, and especially a kind of quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, belongs to fluid electric-heating technology field.
Background technology
Along with scientific and technological development, quick-heating electric water heater and water dispenser are widely used in people's daily life, bring great convenience to people's life.From structure and principle angle, fast heating type electric heating products is respectively equipped with fluid flow mechanisms and electric heating body mechanism, under duty, water is heated while flowing, when user completes demand, water is no longer exported, electric heating body also quits work immediately, no longer heating, to guarantee that electric heating products is unlikely to overheated and impaired.In view of this association mode, conventionally can pressure differential switch be set in fast heating type electric heating products inside, in order to respond to the pressure of flow inlet end and the port of export, during water flow, there is pressure differential, when water does not flow, pressure differential is zero.This " switching effect " is associated with the control circuit of product, can realize to heater circuit " conducting " or " opening circuit ", meets the user demand of this class fast heating type electric heating products.
Existing fast heating type electric heating products, there are in actual use some defects in pressure differential switch, be mainly for some small-sized family expenses or office for water heater or water dispenser, because fluid output quantity is little, flow velocity is unhappy, cause the sensitivity of pressure differential switch not high, directly have influence on the normal use of product.In addition, existing fast heating type electric heating products adopts the directly mode of heating of conduction conventionally, heater strip is arranged in water conservancy diversion water pipe, because heater strip is naked silk heating element heater, directly contact in situation with water, heater strip surface is easy to bubbles attached and causes heater strip to be blown, and security performance is bad, and the service life of heater strip is not long yet.
The fast heating type electric heating products that existing employing thick film circuit heats on the market at present, this series products has avoided heater strip to contact with the direct of water, solved the defect that heater strip easily blows, but, existing procucts adopt flat thick film circuit mode of heating mostly, be only applicable to some slim fast heating type electric heating products, product structure is compact not, and it is promoted the use of and is restricted.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of compact conformation, uses safe, the highly sensitive quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, to improve the serviceability of product.
Technical solution of the present utility model is, a kind of quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, comprise fluid flow mechanisms, heating arrangements and pressure differential switch, the two ends of heating arrangements are respectively equipped with anti-electric wall and corresponding anti-electric wall lid, heating arrangements inside is provided with runner, the runner of the anti-electric portion within the walls in this runner and both sides and fluid inlet and fluid issuing form fluid flow mechanisms, described pressure differential switch comprises cavity, push rod and cavity lid, the inside of cavity is provided with one cavity is separated into the glued membrane of two parts of not ganging up mutually, the inside of glued membrane is embedded with a push pedal, push rod is fixedly connected with the centre of this push pedal, wherein: described heating arrangements is column type thick film circuit heating arrangements, from inside to outside comprise successively that periphery is with the metallic rod of guiding gutter, thick film electric heating tube and heat shield, the groove edge of guiding gutter and the inwall of thick film electric heating tube are adjacent to, form the inner flow passage of heating arrangements, the entrance point of this runner and the port of export lead to the runner of corresponding anti-electric portion within the walls respectively, and, in the middle of the runner of the anti-electric wall of the port of export and fluid issuing, separately establish a Venturi tube, the venturi place of this Venturi tube is provided with an outlet, this outlet is communicated with the push rod place side of described pressure differential switch cavity via pipeline, and that side that there is no push rod of described pressure differential switch cavity, the runner and between fluid inlet and the anti-electric wall of entrance point interlinks.
Preferably, the above-mentioned quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, wherein: described Venturi tube is arranged on the end of fluid outlet, one end of Venturi tube is fluid issuing; Venturi tube can be to use finished product to be welded on the inside of fluid course, can be also to form by one-body molded processing and fabricating with outlet section runner.
Again preferably, the above-mentioned quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, wherein: the outer wall cutter at quarter that the guiding gutter of described heating arrangements inside ties up to metallic rod forms, and is integrated with metallic rod is real; The form of guiding gutter is annular or spirality, and the runner that itself and thick film electric heating tube inwall form is annular channel or spiral flow channel.
More preferably, the above-mentioned quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, wherein: described quick heat type fluid heating arrangement is quick heating type water heater or the calandria that uses above fast-heating type drinking machine.
Technique effect of the present utility model is mainly reflected in the following aspects:
(1) the utility model is made as venturi tube structure by the outlet section of runner, when fluid flows out, fluid enters from Venturi tube entrance, through contraction section, flow into venturi, now, rate of flow of fluid is increased, cause the pressure of that side cavity of the pressure differential switch communicating with Venturi tube venturi to reduce, it is large that the pressure differential of glued membrane both sides becomes, thereby increased the sensitivity of pressure differential switch, and the fluid of guaranteeing fast heating type electrical heating product " flows " and obtains synchronizeing carrying out with " being heated ".This scheme is fast-heating type drinking machine or water heater for small-sized family expenses or for handling official business, seem more meaningful, because under these occasions, the flow of water is not very large, the pressure differential of its import and export by Venturi tube " amplification " afterwards, the sensitivity of pressure differential switch greatly improves, and the serviceability of product can access better guarantee.
(2) the utility model calandria adopts the heating of column type thick film circuit, by thick film electric heating tube, carries out transferring heat, has avoided heating wire to contact with the direct of water, thereby has solved the phenomenon that heater strip surface causes heater strip to blow because of bubbles attached.And, adopt column type thick film circuit mode of heating, broken the limitation that flat thick film circuit is only applicable to some slim electric heating products, its structure is more compact, and range of application is more extensive, has advanced the development of thick film circuit in electric heating products field.
(3) in addition, the utility model is provided with the anti-electric wall of twice in the middle of fluid course, the resistance that utilizes water or other fluid itself to have, and the conductive path of material and caliber limit fluid by anti-electric wall, makes Leakage Current decay, plays " every electricity " effect.When product energising work, even if fluid is charged, also can isolate by the runner of anti-electric wall, make electric heating products import and export two ends and reach almost nil voltage and the atomic weak current below 0.02mA/Kw, fully guaranteed user's personal safety.
Accompanying drawing explanation
Fig. 1 is blast structural representation of the present utility model;
Fig. 2 is structural principle schematic diagram of the present utility model;
Fig. 3 is anti-electric wall cross section and flow passage route schematic diagram;
Fig. 4 is the overall structure schematic diagram after Fig. 1 assembles.
In figure, the implication of each Reference numeral is: 1-fluid inlet, 2-O RunddichtringO, the anti-electric wall lid of 3-, 4-sealing ring, the anti-electric wall of 5-, 51-Venturi tube, the outlet of 52-venturi, 53-runner, 6-glued membrane, 7-push pedal, 8-push rod, 9-cavity lid, 10-brake arm, 11-microswitch, 12-fluid issuing, 13-is with the metallic rod of guiding gutter, 14-thick film electric heating tube, 15-calandria sealing ring, 16-lead screw, 17-heat shield, 18-holder; In figure, arrow represents fluid flow direction.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, so that technical solutions of the utility model are easier to understand and grasp.
As shown in Figure 1 to 4, a kind of quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall, comprise fluid flow mechanisms, heating arrangements and pressure differential switch, the two ends of heating arrangements are respectively equipped with anti-electric wall 5 and corresponding anti-electric wall lid 3, heating arrangements inside is provided with runner, and the runner 53 of this runner and both sides anti-electric wall 5 inside and fluid inlet 1 and fluid issuing 12 form fluid flow mechanisms.
Pressure differential switch comprises cavity, push rod 8 and cavity lid 9, and cavity lid 9 is fixedly connected with by screw with the outer wall of anti-electric wall 5.The inside of cavity is provided with a glued membrane 6, and the periphery of glued membrane 6 is fixedly connected with the inwall of cavity by the hinged various ways that waits, thereby cavity is separated into two parts that fluid is not ganged up mutually.The inside of glued membrane 6 is embedded with a push pedal 7, and push rod 8 is fixedly connected with the centre of this push pedal 7, and push rod 8 and cavity cover between the circular hole of 9 center positions and be slipper seal.Meanwhile, above covering 9 outsides, cavity is provided with the brake arm corresponding with push rod 8 10.
Heating arrangements from inside to outside comprises successively: periphery is with metallic rod 13, the thick film electric heating tube 14 of guiding gutter and the heat shield 17 that is sleeved on thick film electric heating tube 14 outsides.The form of guiding gutter is annular or spirality, preferably in the periphery of metallic rod 13, be directly processed into, during assembling, metallic rod with guiding gutter 13 is inserted in the body of thick film electric heating tube 14, the groove edge of guiding gutter and the inwall of thick film electric heating tube 14 are adjacent to, looping runner or spiral flow channel.According to technical solutions of the utility model, thick film electric heating tube 14 is usingd the good metal of stainless steel, heat conduction as matrix material, then the outer wall at matrix material covers Electric radiant Heating Film, and this Electric radiant Heating Film comprises from inside to outside successively: inner insulating layer, thick film circuit and external insulation layer.
Anti-electric wall 5 is fixedly connected with by screw rod between covering 3 with anti-electric wall, is provided with sealing ring 4, to guarantee the unimpeded and good sealing property of fluid course between them.A side at anti-electric wall 3 is provided with a holder 18, and the heating arrangements after assembling is stuck in this holder 18, and the import and export of its inner flow passage are connected mutually with the runner 53 of the anti-electric wall of entrance end 5 inside respectively; The through hole separately passing on holder 18 limits by a lead screw 16, is connected with the screw being arranged on anti-electric wall lid 3 then, plays auxiliary fixation.Structure after all having assembled, can be referring to Fig. 4.
The main body runner of fluid comprises successively: runner 53, the fluid issuing 12 of fluid inlet 1, the runner 53 of the anti-electric wall of entrance point 5 inside, the annular channel of heating arrangements inside or spiral flow channel, the anti-electric wall of the port of export 5 inside, fluid inlet 1 and fluid issuing 12 are equipped with O RunddichtringO 2 with the junction of anti-electric wall lid 3 separately.The internal structure of anti-electric wall 3 and fluid trend are as shown in Figure 3, its runner can comparatively clearly show by Fig. 2: whole runner is divided into AA1, BB1, CC1, DD1, EE1, FF1, several sections of GG1 etc., the outlet A1 of runner AA1 is connected with the import B1 of runner BB1, the outlet B of runner BB1 is connected with the import C of runner CC1, the outlet C1 of runner CC1 is connected with the import D1 of runner DD1, the outlet D of runner DD1 is connected with the import E of runner EE1 via annular channel or the spiral flow channel of heating arrangements inside, the outlet E of runner EE1 is connected with the import F of runner FF1, the outlet F1 of runner FF1 is connected with the import G1 of runner GG1.According to technical solutions of the utility model, the part runner HH1 near fluid issuing 12 is designed to Venturi tube 51, described Venturi tube 51 can be finished product to be welded on to the inside of fluid course, can be to be also processed into by one-body molded with outlet section runner.At these Venturi tube 51 venturi places, offer an outlet 52, this outlet 52 is communicated with the push rod 8 place sides of the cavity of pressure differential switch via pipeline, and cavity does not have a side of push rod 8 separately to have an opening, and the runner of this opening and fluid inlet 1 that one end leads to.
During work, user opens switch or pins button, and fluid enters runner AA1 from import 1, by A to A1, A1 to B1, B1 to B, B to C, C to C1, C1 to D1, D1 to D, the annular channel or the spiral flow channel that from D flows out, flow to heating arrangements inside heat, after heating, flow out to E1, E1 to E, E to F, F to F1, F1 to G1, G1 to G, G to H, H to H1, finally draws from fluid issuing 12.When fluid is flowed through Venturi tube 51 (being H to H1 section), fluid meter reveals the process of " speed-raising-reduction of speed ", the fastest position of its flow velocity is in this section of venturi, and herein the pressure of internal fluid comparatively speaking in minimum, should " low pressure " be delivered to fast pressure differential switch inside cavity by that side at the separated push rod of glued membrane 68 places, and the opposite side of cavity is owing to leading to fluid intake end, like this, the both sides of glued membrane 6 will show larger pressure reduction, the middle part of glued membrane 6 drives push pedal 7 that its inside is embedded to push rod 8 place side shiftings, and then order about push rod 8 and move outside cavity.When the head of push rod 8 and brake arm 10 1 end in contact, brake arm 10 other ends contact with microswitch 11, start electrical-heating control circuit, and fluid is heated in flow process.During fluid after user no longer needs heating, the fluid in runner is no longer mobile, and the suffered pressure in glued membrane 6 both sides equates, glued membrane 6 will drive push pedal 7 and push rod 8 to reset, and push rod 8 separates with brake arm 10, electrical-heating control circuit disconnection and no longer heating.
Above technical solutions of the utility model be have been described in detail; cited is only typical exemplary applications; it is to be understood that; by to the combination of same or similar technical characterictic and replacement; can form multiple specific embodiments, within these schemes all drop on protection domain of the present utility model.
Claims (6)
1. with the quick heat type fluid heating arrangement of pressure differential switch and anti-electric wall, comprise fluid flow mechanisms, heating arrangements and pressure differential switch, the two ends of heating arrangements are respectively equipped with anti-electric wall (5) and corresponding anti-electric wall lid (3), heating arrangements inside is provided with runner, the runner (53) that the anti-electric walls in this runner and both sides (5) are inner and fluid inlet (1) and fluid issuing (12) form fluid flow mechanisms, described pressure differential switch comprises cavity, push rod (8) and cavity lid (9), the inside of cavity is provided with one cavity is separated into the glued membrane (6) of two parts of not ganging up mutually, the inside of glued membrane (6) is embedded with a push pedal (7), push rod (8) is fixedly connected with the centre of this push pedal (7), it is characterized in that: described heating arrangements is column type thick film circuit heating arrangements, from inside to outside comprise successively that periphery is with the metallic rod (13) of guiding gutter, thick film electric heating tube (14) and heat shield (17), the inwall of the groove edge of guiding gutter and thick film electric heating tube (14) is adjacent to, form the inner flow passage of heating arrangements, the entrance point of this runner and the port of export lead to the runner (53) of corresponding anti-electric wall (5) inside respectively, and, in the middle of the runner of the anti-electric wall of the port of export (5) and fluid issuing (12), separately establish a Venturi tube (51), the venturi place of this Venturi tube (51) is provided with an outlet (52), this outlet (52) is communicated with push rod (8) the place side of described pressure differential switch cavity via pipeline, and that side that there is no push rod (8) of described pressure differential switch cavity, the runner and between fluid inlet (12) and the anti-electric wall of entrance point (5) interlinks.
2. the quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall according to claim 1, it is characterized in that: described Venturi tube (51) is arranged on the end of fluid outlet, one end of Venturi tube (51) is fluid issuing (12).
3. the quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall according to claim 1 and 2, it is characterized in that: described Venturi tube (51) is the inside that is welded on fluid course, or be processed into by one-body molded with outlet section runner.
4. the quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall according to claim 1, is characterized in that: the outer wall cutter at quarter that the guiding gutter of described heating arrangements inside ties up to metallic rod (13) forms, and is integrated with metallic rod is real.
5. the quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall according to claim 4, it is characterized in that: described guiding gutter is annular or spirality guiding gutter, the runner that itself and thick film electric heating tube (14) inwall form is annular channel or spiral flow channel.
6. the quick heat type fluid heating arrangement with pressure differential switch and anti-electric wall according to claim 1, is characterized in that: described quick heat type fluid heating arrangement is quick heating type water heater or the calandria that uses above fast-heating type drinking machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560005.0U CN203432064U (en) | 2013-09-11 | 2013-09-11 | Instant-heating type fluid heating structure with differential pressure switch and electricity-proof walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320560005.0U CN203432064U (en) | 2013-09-11 | 2013-09-11 | Instant-heating type fluid heating structure with differential pressure switch and electricity-proof walls |
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| Publication Number | Publication Date |
|---|---|
| CN203432064U true CN203432064U (en) | 2014-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320560005.0U Withdrawn - After Issue CN203432064U (en) | 2013-09-11 | 2013-09-11 | Instant-heating type fluid heating structure with differential pressure switch and electricity-proof walls |
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| Country | Link |
|---|---|
| CN (1) | CN203432064U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471233A (en) * | 2013-09-11 | 2013-12-25 | 方文平 | Quick-heating type fluid heating structure with pressure difference switch and electricity guard wall |
| CN112595921A (en) * | 2021-03-02 | 2021-04-02 | 天津金海通半导体设备股份有限公司 | High-low temperature testing device and method for electronic element |
-
2013
- 2013-09-11 CN CN201320560005.0U patent/CN203432064U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471233A (en) * | 2013-09-11 | 2013-12-25 | 方文平 | Quick-heating type fluid heating structure with pressure difference switch and electricity guard wall |
| CN112595921A (en) * | 2021-03-02 | 2021-04-02 | 天津金海通半导体设备股份有限公司 | High-low temperature testing device and method for electronic element |
| CN112595921B (en) * | 2021-03-02 | 2021-05-18 | 天津金海通半导体设备股份有限公司 | High-low temperature testing device and method for electronic element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO SUFUDE ELECTRIC CO., LTD. Free format text: FORMER OWNER: FANG WENPING Effective date: 20141120 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20141120 Address after: 315514, Zhejiang province Fenghua Jiangkou Street Square Bridge Development Zone Patentee after: Ningbo Speed Electric Appliance Co., Ltd. Address before: 315514, Hengfeng Road, 136 Square Bridge Industrial Park, Zhejiang, Ningbo, Fenghua Patentee before: Fang Wenping |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140212 Effective date of abandoning: 20150902 |
|
| RGAV | Abandon patent right to avoid regrant |