CN102228360B - Water dispenser with purification device - Google Patents
Water dispenser with purification device Download PDFInfo
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- CN102228360B CN102228360B CN 201110100958 CN201110100958A CN102228360B CN 102228360 B CN102228360 B CN 102228360B CN 201110100958 CN201110100958 CN 201110100958 CN 201110100958 A CN201110100958 A CN 201110100958A CN 102228360 B CN102228360 B CN 102228360B
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- water
- enclosing cover
- inner cap
- filter cylinder
- purifier
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Abstract
The invention discloses a water dispenser with a purification device, which comprises a shell, a raw water tank, a purifier, a purified water tank, a cooling/heating device, a water outlet device and a waste water receiving box, wherein raw water firstly moves into the raw water tank; the raw water in the raw water tank is pumped into the purified water tank by a pump; the water in the purified water tank is subjected to cooling/heating treatment before being sent out by the water outlet device; the purifier is connected in series in a pipeline between the raw water tank and the purified water tank, and is formed by connecting an ultrafiltration purifier, a cation exchanger, an active carbon filter and a post-positioned ultrafiltration purifier in series; a filter cartridge cover and a filter cartridge of the ultrafiltration purifier form detachable flexible connection by means of a clamping lug of the filter cartridge cover and a corresponding bayonet of the filter cartridge; and the heating device comprises an electric heating membrane heater. By using the purification device, the raw water can be directly purified in the water dispenser, thereby facilitating the use process; as the ultrafiltration purifier has a detachable structure, the ultrafiltration membrane can be repeatedly cleaned and used, thereby saving the resources; and the electric heating membrane heater has a high heating efficiency, thereby achieving the effects of real-time water getting and real-time heating.
Description
Technical field
The present invention relates to a kind of water dispenser, particularly a kind of water dispenser with purifier.
Background technology
The water dispenser that uses in prior art at present usually uses through the bottled water that purifies as the water source or purchases separately water purifier, and this gives using and put and bringing very large inconvenience of water dispenser.
Summary of the invention
The present invention is in order to overcome defective in above-mentioned prior art, by in water dispenser inside, the source water purification installation being set, realizes source water in the direct purification of water dispenser inside, and the use of convenient drinking is avoided independent use source water purification installation or used barreled to purify waste water.
The invention provides a kind of water dispenser with purifier, comprise and be positioned at housing and the raw water box that is linked in sequence, clarifier, clear water tanks, cooling and heating device and discharging device, former water in raw water box is by being pumped to clear water tanks, water in clear water tanks is sent by discharging device after the hot and cold processing of cooling and heating device, and clarifier is serially connected with in pipeline between raw water box and clear water tanks.
Preferably, clarifier is formed by super-filtration purifying device, cation exchanger, active carbon filter and rearmounted super-filtration purifying device serial connection.
Preferably, the super-filtration purifying device comprises filter cylinder, filter core and filtering cartridge lid; Filter cylinder is the long tubular thin walled shell structure that an end opens wide, the shape of filter core and cartridge interior shape are suitable and be socketed in filter cylinder, be provided with in filtering cartridge lid control current enter filter cylinder and filter after the passage that flows out of water, be dismountable flexible connection between filtering cartridge lid and filter cylinder.
Preferably, filtering cartridge lid is comprised of inner cap and enclosing cover, and inner cap is flexibly connected by bayonet arrangement and filter cylinder, is fastenedly connected by screw thread rotation between enclosing cover and inner cap; Be respectively equipped with relatively independent intake tunnel and exhalant canal between inner cap, enclosing cover, be provided for controlling the elastic valve that intake tunnel opens and closes in intake tunnel.
Preferably, inner cap is the cylindrical ampuliform structure that cuts the bottom, diameter and the filter cylinder internal diameter of inner cap bottle bottom are suitable, interior exterior surface, be provided with the junction of filter cylinder the clamping lug that radially extends, the end face of filter cylinder is provided with ┻ shape or the L shaped bayonet socket corresponding with the clamping lug, the clamping lug enters after bayonet socket to the bayonet socket bottom along ┻ or L shaped bayonet socket vertical section, horizontally rotates inner cap and makes the clamping lug be subject to the constraint of bayonet socket bottom.
Preferably, heat treatment is completed by heater, heater is the heater that contains Electric radiant Heating Film, comprise water intake mechanism, electrothermal film heating pipe, discharge mechanism and protecting sheathing, protecting sheathing is comprised of two of symmetry, be fastenedly connected between protecting sheathing and two described electrothermal film heating pipes that be arranged in parallel are clamped in the centre, the inner water flowing stream of electrothermal film heating pipe, the outside is coated with electric heating film; Water intake mechanism is shell structure, the opening part of housing is rotatably connected with the cap of sealing ring, housing comprises a water inlet and two parallel delivery ports that are connected with water stream channel electrothermal film heating pipe, and enclosure interior also movable sleeve is connected to sedimentation basin, and the incrustation scale in current deposits in sedimentation basin; Discharge mechanism is also shell structure, have vapour, liquid separating apparatus, the housing of discharge mechanism is provided with the water inlet that is connected with electrothermal film heating pipe, and the side of water inlet is provided with the bucket with the conical surface, the bucket cone tip part sets out the mouth of a river, and the side surface on the conical surface has steam (vapor) outlet.
Preferably, steam (vapor) outlet is connected with liquefying plant by pipeline, and steam flows to the waste water water spilage tray after condensation in liquefying plant.
Preferably, raw water box, clear water tanks are provided with for the water level protection switch of controlling the water pump start and stop.
Compared with prior art, the present invention has following beneficial effect:
1, by in water dispenser inside, the source water purification installation being set, realize source water in the direct purification of water dispenser inside, the use of convenient drinking is avoided independent use source water purification installation or is used barreled to purify waste water;
2, in purifier, the super-filtration purifying device uses dismountable filter cylinder, filtering cartridge lid structure, realizes that the cleaning repeatedly of milipore filter is used, and has saved resource;
3, heater adopts the electrothermal film heater efficiency of heating surface high, has realized the real-time water intaking effect of heating in real time.
Description of drawings
Fig. 1 is the internal structure schematic diagram (forward sight) of a kind of water dispenser with purifier of the present invention;
Fig. 2 is the internal structure schematic diagram (right side is looked) of a kind of water dispenser with purifier of the present invention;
Fig. 3 is the purifier structural representation (analysing and observe) of a kind of water dispenser with purifier of the present invention;
Fig. 4 is the cutaway view of the super-filtration purifying device in the purifier of a kind of water dispenser with purifier of the present invention;
Fig. 5 is the exploded perspective view (not containing enclosing cover) of super-filtration purifying device of the purifier of a kind of water dispenser with purifier of the present invention;
Fig. 6 is the exploded perspective view of the electrothermal film heater of a kind of water dispenser with purifier of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subjected to the restriction of the specific embodiment.
Water dispenser with purifier of the present invention as shown in Figure 1, 2, comprise housing 1, raw water box 2, clarifier 3, clear water tanks 5, heater 7, refrigerating plant and discharging device 8, waste water water spilage tray 10, at first former water enter raw water box 2, former water in raw water box 2 by pump 4 finally be depressed into clear water tanks 5(during this former water filter through clarifier 3), clarifier 3 is serially connected with in pipeline between raw water box 2 and clear water tanks 5, and the water in clear water tanks 5 is sent for drinking by discharging device 8 after hot and cold processing.
Further as shown in Figure 3, clarifier is formed by super-filtration purifying device 3A, cation exchanger 3B, active carbon filter 3C and rearmounted super-filtration purifying device 3D serial connection.
Further as shown in Figure 4, super-filtration purifying device 3A comprises filter cylinder 301, filter core 302 and filtering cartridge lid; Filter cylinder 301 is the long tubular thin walled shell structure that an end opens wide, the shape of filter core 302 and filter cylinder 301 interior shapes are suitable and be socketed in filter cylinder 301, be provided with in filtering cartridge lid and control the passage that the water of current after water inlet 341 enters filter cylinder 301 and filters flows out through delivery port 346, realize removably connecting by dismountable articulating device between filtering cartridge lid and filter cylinder 301, filter cylinder 301 is made by transparent material, can observe the virtual condition of water filtration situation and filter core from appearance.
Further as shown in Fig. 4,5, filtering cartridge lid is comprised of inner cap 303 and enclosing cover 304, and inner cap 303 is flexibly connected by bayonet arrangement and filter cylinder 301, is fastenedly connected by screw thread rotation between enclosing cover 304 and inner cap 303.Be respectively equipped with independently intake tunnel and exhalant canal between inner cap, enclosing cover, control the switching of intake tunnel in intake tunnel by elastic valve is set.
Further as shown in Figure 4, enclosing cover 304 is the stairstepping cylindrical thin shell body that cuts the approximate ampuliform of bottom, the upper surface is sealed by spherical arc surface, is provided with a dividing plate 342 in thin walled shell the upper isolation of thin walled shell is become relatively independent cavity, makes water-in and water-out stream form independently respectively water stream channel.The axis of the lower end edge enclosing cover 304 of dividing plate 342 extends columniform leg 345 downwards and is used for socket inner cap faucet 335, the end face circle centre position of leg 345 is provided with the apopore of perforation, and this apopore is connected with the delivery port 346 of the thin walled shell outer wall of enclosing cover 304 and consists of the exhalant canal that passes through the enclosing cover cavity.
Further as shown in Figure 4, be arranged at the interior valve of water stream channel that the outer cover cavity body divides, comprise valve body 343, valve body 343 is stepped cylinder, reduced diameter section is socketed with back-moving spring 344, the vertical plane of one end of back-moving spring 344 and valve body 343 ladders connects, and the contacted inner surfaces of the other end and enclosing cover 304 connects, and forms the axial reseting elasticity to valve body 343.Valve body 343 enlarged diameter sections are positioned at valve body lower portion, and its outer surface ring is circumferentially with the sealing ring caulking groove, and its end face corner establishes conical target seeker 347, axially extend cylindrical push rod 348 at the cone tip part of target seeker 347 downwards along valve body.Correspondingly, in the intake tunnel of enclosing cover 304, the corresponding position is provided with the conical guiding face suitable with valve body circular cone target seeker 347, the cone tip part of guiding face is provided with the via hole that holds the perforation that push rod 348 passes, during valve closing, taper target seeker 347 fits tightly sealing with guiding face, and cylindrical push rod 348 passes the dividing plate 342 of enclosing cover from taper guiding face via hole simultaneously.Valve body 343, back-moving spring 344, push rod 348 have consisted of controls the valve that the filtering cartridge lid water stream channel opens and closes.
Further as shown in Figure 4, enclosing cover ampuliform thin walled shell shoulder extends cylindrical leg 349 downwards along the enclosing cover axis, and the inner surface of leg 349 is provided with the screw thread that is connected with inner cap 303.
Further as shown in Fig. 4,5, inner cap 303 is for cutting the cylindrical ampuliform structure of bottom, bottleneck one end face is to enclosing cover 304, the bottleneck end is provided with the cylindrical water nozzle 335 that dwindles again one-level, the suitable socket of leg 345 that water nozzle 335 and enclosing cover dividing plate 342 are set, the outer surface of water nozzle 335 be provided with twice parallel along the sealing ring caulking groove 336 that arranges in water nozzle ring week, put the sealing after realizing inner cap 303 and the exhalant canal of enclosing cover 304 is connected after sealing ring.As shown in Figure 5, the bottleneck end face outside water nozzle 335 is provided with a plurality of take water nozzle as symmetrical inlet opening 338.Bottleneck end face outside water nozzle 335 also is provided with two with the boss 337 of water nozzle center reverse symmetry, and the direction towards enclosing cover and inner cap screw-tightened of boss 337 is provided with guide ramp.When screw-tightened is connected between enclosing cover 304 and inner cap 303, the push rod 348 of valve body 343 connects with inner cap bottleneck end face, when rotation approaches and to put in place, push rod 348 moves on gradually along boss guiding face 337 valve body 343 is backed down, screwing when putting in place push rod 348 just and the upper surface of boss 337 connects, valve is opened intake tunnel fully and is opened, and current pass inner cap inlet opening 338 through water inlet 341, the valve of enclosing cover 304 and enter filter core 302, cylindrical shell 301.
Further as shown in Fig. 4,5, the diameter of inner cap 303 and enclosing cover junction and the leg 349 of enclosing cover 304 shoulders are suitable, its side surface is provided with the screw thread 333 that is connected with enclosing cover 304 spirals, and the top of screw thread 333 also is provided with the parallel circumferential hoop of twice around the sealing ring caulking groove 334 of inner cap bottleneck portion.The bottom of inner cap 303 and filter cylinder 301 socket-connect adaptive, the interior exterior surface of socket place is provided with the columniform clamping lug 331 that radially extends, the end face of filter cylinder 301 is provided with the ┻ shape bayonet socket 311 corresponding with the clamping lug, clamping lug 331 enters after bayonet socket 311 to bayonet socket 311 bottoms along vertical section of ┻ shape bayonet socket, horizontally rotate inner cap 303 and make clamping lug 331 be subject to the constraint of bayonet socket bottom, realize the activity clamping between inner cap and filter cylinder.Also be provided with below inner cap clamping lug twice parallel around the circumferential sealing ring caulking groove 332 of inner cap, form the sealing that is connected between inner cap 303 and filter cylinder 301 after sealing ring embeds.The bottleneck inner face of inner cap 303 extends the cylindrical leg 339 of cover connection filter element along axis to the lower end centered by water nozzle 335 axis.
Further as shown in Figure 4, the main body of filter core 302 is the cylindrical bottle body structure, and bottle partly is socketed in filter cylinder 301, and bottleneck portion and inner cap bottleneck inner face leg 339 are suitable, and filter core bottleneck socket part also is provided with the sealing ring caulking groove 321 that ring week arranges.In addition, the bottle part end face of enclosing cover 304 and the end face of filter cylinder 301 connect, the outer surface smoother transition of enclosing cover 304 bottle part outer surfaces and filter cylinder 301.
Further as shown in Fig. 1,2,6, raw water box, clear water tanks are provided with the water level protection switch, are used for controlling the start and stop of water pump; Clear water tanks 5 is connected with refrigerating plant with heater respectively, and wherein, refrigerating plant is comprised of cold courage 710 and compressor 7, and compressor 7 provides refrigeration to drive, and cold courage 710 provides the heat exchange between water and cold-producing medium.
Further as shown in Figure 6, heater is the heater that contains Electric radiant Heating Film, comprises water feed apparatus 630, electrothermal film heating pipe 620, discharging device 640 and outer containment vessel 610.Wherein, protecting sheathing 610 is comprised of two of symmetry, in the middle of being fastenedly connected between protecting sheathing and two electrothermal film heating pipes that be arranged in parallel 620 being clamped in, and the inner water flowing stream of electrothermal film heating pipe 620; the outside is coated with electric heating film, and electric heating film is heated by electrical heating wire.Water feed apparatus 630 is shell structure, the opening part of housing is rotatably connected with the cap 635 of sealing ring 634, housing 630 comprises a water inlet 631 and two parallel delivery ports 632 that are connected with water stream channel electrothermal film heating pipe, enclosure interior also movable sleeve is connected to sedimentation basin 633, incrustation scale in current deposits in sedimentation basin 633, opens cap 635 and sedimentation basin 633 can be taken out cleaning.Discharging device 640 is housing, have the structure of vapour, liquid separation, housing is provided with the water inlet 641 that is connected with electrothermal film heating pipe, and the side of water inlet is provided with the bucket 642 with the conical surface, the bucket cone tip part sets out the mouth of a river 643, and the side surface on the conical surface has steam (vapor) outlet 644.
Further as shown in Figure 1, 2, the steam (vapor) outlet 644 of heater discharge mechanism is connected with liquefying plant 9 by pipeline, and steam flows to waste water water spilage tray 10 after condensation in liquefying plant 9.Water purification after heating is put into water receiving container 11 through discharging device 8.
Compared with prior art, the present invention realizes source water in the direct purification of water dispenser inside by in water dispenser inside, the source water purification installation being set, and the use of convenient drinking is avoided independent use source water purification installation or used barreled to purify waste water; Simultaneously, in purifier, the super-filtration purifying device uses dismountable filter cylinder, filtering cartridge lid structure, realizes that the cleaning repeatedly of milipore filter is used, and has saved resource; In addition, heater adopts the electrothermal film heater efficiency of heating surface high, has realized the real-time water intaking effect of heating in real time.
Above disclosed be only a specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (7)
1. water dispenser with purifier, comprise and be positioned at housing and the raw water box that is linked in sequence, clarifier, clear water tanks, cooling and heating device and discharging device, former water in raw water box is by being pumped to clear water tanks, water in clear water tanks is sent by discharging device after the hot and cold processing of cooling and heating device, it is characterized in that, described clarifier is serially connected with in pipeline between raw water box and clear water tanks;
Described clarifier is formed by super-filtration purifying device, cation exchanger, active carbon filter and rearmounted super-filtration purifying device serial connection; Described super-filtration purifying device comprises filter cylinder, filter core and filtering cartridge lid; Described filtering cartridge lid is comprised of inner cap and enclosing cover, be fastenedly connected by screw thread rotation between described enclosing cover and inner cap, be respectively equipped with relatively independent intake tunnel and exhalant canal between inner cap, enclosing cover, be provided for controlling the elastic valve that intake tunnel opens and closes in intake tunnel;
Be provided with the dividing plate that upper isolation is become relatively independent cavity in described enclosing cover, the valve body of described elastic valve is stepped cylinder, its reduced diameter section is socketed with back-moving spring, one end of described back-moving spring and the vertical plane of described valve body ladder connect, the contacted inner surfaces of the other end and described enclosing cover connects, and forms the axial reseting elasticity to described valve body; The enlarged diameter section of described valve body is positioned at the bottom of described valve body, the end face corner of described valve body enlarged diameter section is provided with conical target seeker, axially extend cylindrical push rod downwards at the cone tip part of described target seeker along described valve body, in the intake tunnel of described enclosing cover, the corresponding position is provided with the conical guiding face suitable with described target seeker, and the cone tip part of described guiding face is provided with the via hole that holds the perforation that described push rod passes;
Described inner cap is the cylindrical ampuliform structure that cuts the bottom, the bottleneck end is provided with the cylindrical water nozzle that dwindles again one-level, bottleneck end face outside described water nozzle is provided with two with the boss of described water nozzle center reverse symmetry, and the direction towards described enclosing cover and described inner cap screw-tightened of described boss is provided with guide ramp;
During described valve closing, the described conical guiding face of described target seeker and described enclosing cover fits tightly sealing, and described push rod passes the dividing plate of described enclosing cover from the described via hole of described conical guiding face simultaneously; When the rotation of described enclosing cover and described inner cap approached and to put in place, described push rod moved on gradually along described boss guide ramp described valve body is backed down; Screw when putting in place, the lucky upper surface with described boss of described push rod connects, and described valve is opened fully, and described intake tunnel is opened.
2. the water dispenser with purifier according to claim 1, it is characterized in that, filter cylinder is the long tubular thin walled shell structure that an end opens wide, the shape of filter core and cartridge interior shape are suitable and be socketed in filter cylinder, be provided with in filtering cartridge lid control current enter filter cylinder and filter after the passage that flows out of water, be dismountable flexible connection between described filtering cartridge lid and filter cylinder.
3. the water dispenser with purifier according to claim 2, is characterized in that, inner cap is flexibly connected by bayonet arrangement and filter cylinder.
4. the water dispenser with purifier according to claim 3, it is characterized in that, diameter and the filter cylinder internal diameter of inner cap bottle bottom are suitable, interior exterior surface, be provided with the junction of filter cylinder the clamping lug that radially extends, the end face of filter cylinder is provided with ┻ shape or the L shaped bayonet socket corresponding with the clamping lug, the clamping lug enters after bayonet socket to the bayonet socket bottom along ┻ shape or L shaped bayonet socket vertical section, horizontally rotates inner cap and makes the clamping lug be subject to the constraint of bayonet socket bottom.
5. the water dispenser with purifier according to claim 1, it is characterized in that, described heat treatment is completed by heater, heater is the heater that contains Electric radiant Heating Film, comprise water intake mechanism, electrothermal film heating pipe, discharge mechanism and protecting sheathing, protecting sheathing is comprised of two of symmetry, in the middle of being fastenedly connected between protecting sheathing and two described electrothermal film heating pipes that be arranged in parallel being clamped in, the inner water flowing stream of electrothermal film heating pipe, the outside is coated with electric heating film; Water intake mechanism is shell structure, the opening part of housing is rotatably connected with the cap of sealing ring, housing comprises a water inlet and two parallel delivery ports that are connected with water stream channel electrothermal film heating pipe, and enclosure interior also movable sleeve is connected to sedimentation basin, and the incrustation scale in current deposits in sedimentation basin; Discharge mechanism is also shell structure, have vapour, liquid separating apparatus, the housing of discharge mechanism is provided with the water inlet that is connected with electrothermal film heating pipe, and the side of water inlet is provided with the bucket with the conical surface, the bucket cone tip part sets out the mouth of a river, and the side surface on the conical surface has steam (vapor) outlet.
6. the water dispenser with purifier according to claim 5, is characterized in that, described steam (vapor) outlet is connected with liquefying plant by pipeline, and steam flows to the waste water water spilage tray after condensation in liquefying plant.
7. the water dispenser with purifier according to claim 1, is characterized in that, described raw water box, clear water tanks are provided with for the water level protection switch of controlling the water pump start and stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110100958 CN102228360B (en) | 2011-03-30 | 2011-04-20 | Water dispenser with purification device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120090131 | 2011-03-30 | ||
| CN201120090131.5 | 2011-03-30 | ||
| CN 201110100958 CN102228360B (en) | 2011-03-30 | 2011-04-20 | Water dispenser with purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102228360A CN102228360A (en) | 2011-11-02 |
| CN102228360B true CN102228360B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110100958 Expired - Fee Related CN102228360B (en) | 2011-03-30 | 2011-04-20 | Water dispenser with purification device |
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| Country | Link |
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| CN (1) | CN102228360B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202734208U (en) * | 2012-06-07 | 2013-02-13 | 沁园集团股份有限公司 | Instant water heater |
| CN105559600B (en) * | 2016-02-24 | 2018-09-18 | 浙江金华瑞康照明科技有限公司 | A kind of solar refrigeration water dispenser |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343635A (en) * | 2000-09-20 | 2002-04-10 | 徐元杰 | Combined computerized water purifying drinking appliance |
| CN2516074Y (en) * | 2001-12-26 | 2002-10-16 | 叶建荣 | Pressure water purification dispenser |
| CN201081412Y (en) * | 2007-08-20 | 2008-07-02 | 王佰忠 | Self-feeding water dispenser heater assembly |
| CN101244350A (en) * | 2008-03-17 | 2008-08-20 | 周育强 | Method and device for connecting filter with middleware |
| CN201320089Y (en) * | 2008-12-01 | 2009-10-07 | 余建丰 | Heating assembly for water dispenser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060006124A1 (en) * | 2004-07-12 | 2006-01-12 | Yates Brian G | Filter cartridge and method and apparatus for replacing same |
-
2011
- 2011-04-20 CN CN 201110100958 patent/CN102228360B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1343635A (en) * | 2000-09-20 | 2002-04-10 | 徐元杰 | Combined computerized water purifying drinking appliance |
| CN2516074Y (en) * | 2001-12-26 | 2002-10-16 | 叶建荣 | Pressure water purification dispenser |
| CN201081412Y (en) * | 2007-08-20 | 2008-07-02 | 王佰忠 | Self-feeding water dispenser heater assembly |
| CN101244350A (en) * | 2008-03-17 | 2008-08-20 | 周育强 | Method and device for connecting filter with middleware |
| CN201320089Y (en) * | 2008-12-01 | 2009-10-07 | 余建丰 | Heating assembly for water dispenser |
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| CN102228360A (en) | 2011-11-02 |
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