CN107303447B - Water heater - Google Patents

Water heater Download PDF

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Publication number
CN107303447B
CN107303447B CN201610252208.1A CN201610252208A CN107303447B CN 107303447 B CN107303447 B CN 107303447B CN 201610252208 A CN201610252208 A CN 201610252208A CN 107303447 B CN107303447 B CN 107303447B
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CN
China
Prior art keywords
water
outlet
sewage
flow path
inlet
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CN201610252208.1A
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Chinese (zh)
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CN107303447A (en
Inventor
王建良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Haier Smart Home Co Ltd
Qingdao Haier New Energy Electric Appliance Co Ltd
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Qingdao Haier New Energy Electric Appliance Co Ltd
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Priority to CN201610252208.1A priority Critical patent/CN107303447B/en
Publication of CN107303447A publication Critical patent/CN107303447A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/015—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements
    • B01D33/0158—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/80—Accessories
    • B01D33/803—Accessories in which the filtering elements are moved between filtering operations ; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0042—Cleaning arrangements

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Treatment By Sorption (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The present invention provides a water heater, comprising: the filter device is provided with a filter element, a water inlet hole, a clear water outlet hole and a sewage outlet hole; a sewage collection pipe configured to receive water from the sewage discharge pipe and the sewage outlet; and a flow path control device configured to controllably simultaneously turn on or off a water flow path between the inlet of the sewage drain pipe and the outlet of the sewage collecting pipe, and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe. When dirt in the filter screen and/or the water tank needs to be cleaned, the water flow path between the inlet of the drain pipe and the outlet of the sewage collecting pipe is conducted simultaneously, and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe can be conducted without disassembling the filter element in the filtering device, so that the water heater is simple and convenient to clean, the problem of difficulty in manually disassembling and cleaning the filter element and discharging sewage is solved, the cleaning period of the water heater is shortened, the maintenance cost is saved, and the water quality and the use performance of the water heater are improved.

Description

Water heater
Technical Field
The invention relates to the technical field of water heating, in particular to a water heater.
Background
At present, in order to guarantee the water quality in a water heater, particularly the water quality in a heat pump water heater, a filtering device is required to be installed at a cold water inlet of the water heater, and dirt in a water tank is required to be removed in time. When a water heater discharges sewage or cleans a filter screen, a common user needs to disassemble or open a filter or a sewage discharge port for cleaning by a professional, and some installation positions of the water heater are unchanged in cleaning and maintenance, so that the maintenance is difficult, and therefore, the cleaning and maintenance period of the water heater is very long for most users, and the water quality used by the users is reduced.
Disclosure of Invention
The object of the present invention is to overcome at least one of the drawbacks of the existing water heaters and to provide a novel water heater which can clean the filter net and remove dirt in the water tank in time without removing the filter net, and which is simple in structure and easy to control.
Specifically, the invention provides a water heater, which comprises a water tank, a water inlet pipe and a drain pipe, wherein the water inlet pipe is configured to convey water into the water tank, and the drain pipe is communicated with the bottom of the water tank. In particular, the water heater further comprises:
a filter device having a filter element, a water inlet, a clean water outlet and a sewage outlet, configured to controllably cause water from the water inlet to flow out of the clean water outlet after being filtered by the filter element, or to cause water from the water inlet to flow out of the sewage outlet after the filter element is cleaned; the clear water outlet is communicated with the inlet of the water inlet pipe;
a sewage collection pipe configured to receive water from the sewage discharge pipe and the sewage outlet; and
and the flow path control device is configured to controllably and simultaneously open or close a water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe.
Optionally, the flow path control device is a first valve disposed on the sewage collecting pipe; or
The flow path control device comprises a second valve and a third valve, the second valve is arranged on the sewage discharge pipe, and the third valve is arranged on a pipeline between the sewage outlet and the inlet of the sewage collecting pipe.
Optionally, the filtration device further comprises:
the filter comprises a shell, a water inlet hole and two outlet holes, wherein the shell is internally provided with a filter cavity extending along the length direction of the shell, the shell is provided with the water inlet hole communicated with the middle part of the filter cavity, the two outlet holes are respectively positioned at two ends of the filter cavity, the two outlet holes are respectively a clean water outlet hole and a sewage outlet hole, and each outlet hole and the filter cavity are coaxially arranged; the filter element is movably arranged in the filter cavity along the length direction of the shell; and
two sliding plugs, each configured to open one of the outlet ports by moving outward along a length of the housing, the inward movement blocking the outlet port; and is
Each sliding plug is fixed on one side of the filter element, so that when the sliding plug moves outwards to open the outlet hole due to the fact that the pressure on the inner side is larger than the pressure on the outer side, the pressure difference exists between the outer ends of the two sliding plugs and/or the impact of water from the water inlet hole, the filter element is driven to move towards the outlet hole opened or blocked by the sliding plug and move between the water inlet hole and the outlet hole, and therefore the water from the water inlet hole flows out of the outlet hole through the filter element, and the other sliding plug is driven to block the other outlet hole.
Optionally, each said sliding plug is movably disposed within one said outlet; and is
A plurality of first flow guide grooves extending along the length direction of the shell are formed in the peripheral wall of the inner end of each sliding plug;
and a plurality of second diversion trenches extending along the length direction of the shell are formed in the inner wall of the outer end of each outlet hole.
Optionally, each of the sliding plugs is movably disposed at an outer end of one of the outlet holes, has a diameter larger than an inner diameter of the outlet hole, and is fixedly connected to the filter element by a connecting rod.
Optionally, when the flow path control device simultaneously conducts the water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe, the filter device enables water from the water inlet to flow out of the sewage outlet after the filter element is cleaned.
Optionally, when the flow path control device simultaneously closes off the water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe, the filtering device enables water from the water inlet to flow out of the clean water outlet after being filtered by the filter element.
Optionally, the water heater further comprises a timer, and the water heater is configured to enable the flow path control device to simultaneously conduct the water flow path between the inlet of the sewage draining pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe according to the timing signal sent by the timer.
Optionally, the water heater further comprises a triggering device configured to receive an external operation to generate a filter element cleaning and water tank blowdown signal; and is
The water heater is configured to enable the flow path control device to simultaneously conduct a water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe when the filter element cleaning and water tank sewage discharge signals are obtained.
Optionally, the water heater further comprises a one-way valve disposed on the drain pipe.
Because the water heater of the invention uses the special filtering device and the flow path control device, when the filter screen and/or the dirt in the water tank need to be cleaned, the water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe are simultaneously conducted, a filter element in the filtering device does not need to be disassembled, the cleaning is simple and convenient, the problems of difficult disassembly and cleaning of the filter element and sewage discharge of manual work are solved, the cleaning period of the water heater is shortened, the maintenance cost is saved, and the water quality and the service performance of the water heater are improved.
Furthermore, the water heater of the invention has a filter element, two sliding plugs and two outlet holes because the filter device is provided with the filter element. The two outlets can be a clear water outlet and a sewage outlet respectively for discharging clear water and sewage respectively. When clear water is needed, the clear water outlet is communicated with the water storage tank and the like, the sliding plugs blocking the clear water outlet can move outwards due to the fact that the pressure on the inner side is larger than the pressure on the outer side, the pressure difference exists between the outer ends of the two sliding plugs and/or the impact of water from the water inlet is received, the filter element is driven to move towards the clear water outlet, and finally the water from the water inlet flows out of the clear water outlet through the filter element to achieve water filtering. When the filter element needs to be cleaned, the sewage outlet hole is communicated with the sewage discharge groove and the like, the sliding plugs blocking the sewage outlet hole can move outwards due to the fact that the pressure on the inner side is larger than the pressure on the outer side, the pressure difference exists between the outer ends of the two sliding plugs and/or the impact of water from the water inlet hole is received, the filter element is driven to move towards the sewage outlet hole, and finally the water from the water inlet hole flows out of the sewage outlet hole through the filter element, so that the filter element is automatically back-washed, and the service life of the filter device is prolonged. The filter device has a simple structure, is convenient to control, and can ensure that the filter element can automatically move to a corresponding position only by controlling the flow path control device so as to realize water filtration or backwashing of the filter element.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of a water heater according to one embodiment of the present invention;
FIG. 2 is a schematic block diagram of a water heater according to one embodiment of the present invention;
FIG. 3 is a schematic block diagram of a filter assembly in a water heater according to one embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of the filter apparatus shown in FIG. 3;
fig. 5 is a schematic exploded view of the filter apparatus shown in fig. 3.
Detailed Description
FIG. 1 is a schematic block diagram of a water heater according to one embodiment of the present invention. As shown in fig. 1, an embodiment of the present invention provides a water heater including a water tank 100, a water inlet pipe 200, a heating device 300, a water outlet pipe, a sewage drain pipe 400, and a controller 900. The inlet pipe 200 is configured to supply water into the water tank 100, the heating device 300 is used to heat the water in the water tank 100, the outlet pipe is used to discharge high temperature water in the water tank 100, and the drain pipe 400 is communicated with the bottom of the water tank 100. Further, the water heater is preferably a heat pump water heater, and the heating device 300 may be a heat pump heating module, which may include a compressor, a condenser for heating water, a throttling device, and an evaporator.
In particular, the water heater of the embodiment of the present invention further includes a filtering device 500, a sewage collecting pipe 600, and a flow path control device 700.
The filter device 500 has a filter element 30, a water inlet 23, a clean water outlet, and a sewage outlet, and is configured to controllably allow water from the water inlet 23 to flow out of the clean water outlet after being filtered by the filter element 30, or to allow water from the water inlet 23 to flow out of the sewage outlet after the filter element 30 is cleaned. The fresh water outlet may be in communication with the inlet of the water inlet pipe 200.
The sewage collection pipe 600 is configured to receive water from the sewage drain pipe 400 and the sewage outlet hole.
The flow path control means 700 is configured to controllably simultaneously turn on or off the flow path of the water between the inlet of the sewage drain pipe 400 and the outlet of the sewage collecting pipe 600, and the flow path of the water between the sewage outlet and the outlet of the sewage collecting pipe 600.
For example, when the flow path control device 700 simultaneously opens the water flow path between the inlet of the sewage pipe 400 and the outlet of the sewage collecting pipe 600 and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe 600, the filter device 500 allows water from the water inlet 23 to flow out from the sewage outlet after cleaning the filter element 30. Meanwhile, water in the water tank 100 may also flow out of the drain pipe 400 to take away dirt in the water tank 100.
When the flow path control device 700 simultaneously closes the flow path between the inlet of the sewage pipe 400 and the outlet of the sewage collecting pipe 600 and the flow path between the sewage outlet and the outlet of the sewage collecting pipe 600, the filter device 500 filters the water from the water inlet 23 through the filter element 30 and then flows out from the clean water outlet. Specifically, when water may be required to be introduced into the water tank 100 due to a small amount of water after the dirt treatment and the cleaning of the filter element 30 in the water tank 100 are performed, the flow path control device 700 simultaneously shuts off the flow path between the inlet of the sewage drain pipe 400 and the outlet of the sewage collecting pipe 600 and the flow path between the sewage outlet and the outlet of the sewage collecting pipe 600, and the filter device 500 allows the water from the water inlet 23 to flow out of the clean water outlet after being filtered by the filter element 30 to replenish the water in the water tank 100. When the flow path control device 700 simultaneously closes the flow path between the inlet of the sewage pipe 400 and the outlet of the sewage collecting pipe 600 and the flow path between the sewage outlet and the outlet of the sewage collecting pipe 600, and when water needs to be supplied to the water tank 100 because water is supplied to the water outlet pipe, the filter device 500 filters the water from the water inlet 23 through the filter element 30 and then supplies the water to the water tank 100 through the clear water outlet.
In some embodiments of the present invention, the flow path control device 700 is a first valve disposed on the waste pipe 600, as shown in fig. 1. In this embodiment, the water heater may further include a check valve 800 disposed on the soil pipe 400. In some embodiments of the present invention, the flow path control device 700 may include a second valve 720 and a third valve 730, the second valve 720 is disposed on the sewage drain pipe 400, and the third valve 730 is disposed on a pipeline between the sewage outlet hole and the inlet of the sewage sink pipe 600, as shown in fig. 2. The first valve, the second valve 720 and the third valve 730 can be solenoid valves, and can realize remote control, one-key operation and the like.
In some embodiments of the present invention, the filter device 500 may be an automatic back-flushing filter device. Fig. 3 to 5 are a schematic structural view, a schematic sectional view, and a schematic exploded view of a filter device 500 according to an embodiment of the present invention, respectively. As shown in fig. 3 to 5, the filter device 500 may further include a housing 20 and two sliding plugs 40.
Specifically, the housing 20 defines therein a filter chamber extending along a length direction thereof, and the housing 20 has an inlet opening 23 communicating with a middle portion of the filter chamber, and two outlet openings 24 respectively located at both ends of the filter chamber, each outlet opening 24 being coaxially disposed with the filter chamber. For example, the housing 20 may include a first housing portion 21 and a second housing portion 22, the first housing portion 21 having an inlet opening 23 and an outlet opening 24. The second housing part 22 has a further outlet aperture 24 and is removably mounted to the first housing part 21 to define a filter chamber. Further, the first housing portion 21 and the second housing portion 22 can be coupled by screw thread pair or other means. The two outlets 24 may be a clean water outlet and a waste water outlet, respectively.
The filter element 30 is movably disposed within the filter cavity along the length of the housing 20. Preferably, the filter element 30 has a plate shape perpendicular to the length direction of the housing 20. For example, cartridge 30 may include one or more removable filter screens.
Each slide plug 40 is configured to open one of the outlet apertures 24 by moving outwardly along the length of the housing 20, and to block that outlet aperture 24 by moving inwardly. Furthermore, each sliding plug 40 is fixed to one side of the filter element 30, so that when the sliding plug 40 moves outward to open the outlet hole 24 due to the inner side pressure greater than the outer side pressure, the pressure difference between the outer ends of the two sliding plugs 40, and/or the impact of water from the inlet hole 23, the sliding plug 40 not only moves the filter element 30 to the outlet hole 24 opened or blocked by the sliding plug 40 and moves the filter element 30 between the inlet hole 23 and the outlet hole 24, so that the water from the inlet hole 23 flows out of the outlet hole 24 through the filter element 30, but also drives the other sliding plug 40 to block the other outlet hole 24. For example, the two slide plugs 40 may be a first slide plug and a second slide plug, respectively. The first sliding plug is used for opening or blocking the clear water outlet hole, and the second sliding plug is used for opening or blocking the sewage outlet hole. The two sliding plugs 40 may be connected to the filter cartridge 30 by a threaded or snap-fit connection.
Pipe threads are provided on the outer peripheral walls of the inlet hole 23 and each outlet hole 24 to facilitate pipe installation.
In this embodiment, when water is needed in the water tank 100, that is, the water pressure in the water tank 100 is suddenly lowered, if the filter element 30 is located between the water inlet 23 and the clean water outlet and farthest from the water inlet 23, the first sliding plug is in a state of opening the clean water outlet, and the second sliding plug is in a state of blocking the sewage outlet. The tap water from the inlet pipe can be filtered by the filter element 30 and then flows out from the clear water outlet hole, so that the filtering of the water is realized to obtain the clear water. If filter core 30 is in between inlet opening 23 and the sewage and holds the hole and apart from the position of inlet opening 23 farthest, then first slide plug can be in the state that blocks up the clear water and hold the hole, the second slide plug can be in the state that opens the sewage and hold the hole, then the pressure of first slide plug outer end diminishes because the pressure in the water tank 100 suddenly, can make to have pressure differential between the outer end of two slide plugs, the running water that comes from inlet opening 23 simultaneously also can strike the inboard of first slide plug, make first slide plug outwards remove in order to open the clear water and hold the hole, then filter core 30 and second slide plug are moved simultaneously. Since the first sliding plug can automatically move to completely open the clean water outlet due to the fact that the inner side pressure of the first sliding plug is greater than the outer side pressure, the outer ends of the two sliding plugs 40 have pressure difference and/or the first sliding plug is impacted by water from the water inlet 23, the filter element 30 can automatically move to a position between the water inlet 23 and the clean water outlet, so that the filter element 30 can filter tap water, and the second sliding plug blocks the sewage outlet. When the filter element 30 is located at any position between the farthest position from the water inlet 23 and the farthest position from the water inlet 23 between the water inlet 23 and the clean water outlet and the farthest position from the water inlet 23 between the water inlet 23 and the sewage outlet, because the first sliding plug is greater than the outer side pressure due to the inner side pressure, the outer ends of the two sliding plugs 40 have pressure difference and/or can automatically move to completely open the clean water outlet by the impact of the water from the water inlet 23, and the filter element 30 is driven to move to the farthest position from the water inlet 23 and the sewage outlet between the water inlet 23 and the clean water outlet, and the second sliding plug is driven to block the sewage outlet. That is, when a user needs water or needs clean water by removing dirt in the water tank 100, the user only needs to open the valve on the water outlet pipe or make the flow path control device 700 conduct the outlet of the sewage discharge pipe 400 and the inlet of the sewage collection pipe 600, so that the clean water outlet is in an open state, the filter element 30 is close to the clean water outlet to filter tap water, and the sewage outlet (also referred to as a sewage outlet) is in a closed state by virtue of the characteristics that the inner side pressure of the first sliding plug is greater than the outer side pressure, the outer ends of the two sliding plugs 40 have pressure difference and/or the impact of water from the water inlet 23 can automatically move.
Based on the same principle, when the filter element 30 needs to be cleaned, the flow path control device 700 simultaneously conducts the water flow path between the inlet of the sewage discharge pipe 400 and the outlet of the sewage collection pipe 600 and the water flow path between the sewage outlet and the outlet of the sewage collection pipe 600, so that the filter element 30 can be positioned at the position between the water inlet 23 and the sewage outlet and farthest from the water inlet 23, and the tap water from the inlet pipe can back flush the filter element 30, thereby cleaning the filter element 30. That is, when the filter element 30 needs to be cleaned, the flow path control device 700 may simultaneously open the flow path between the inlet of the sewage drain pipe 400 and the outlet of the sewage collecting pipe 600 and the flow path between the sewage outlet and the outlet of the sewage collecting pipe 600, so that the sewage outlet is in an open state, the filter element 30 can be backwashed by tap water close to the sewage outlet, and the clean water outlet is in a closed state, depending on the characteristic that the second sliding plug is automatically moved by the fact that the inner pressure applied to the second sliding plug is greater than the outer pressure, the pressure difference exists between the outer ends of the two sliding plugs 40, and/or the impact of the water from the water inlet 23. Therefore, the filter element 30 does not need to be detached, the self-cleaning of the filter element 30 is realized, the structure is simple and reliable, the installation is simple, the use is convenient, and the cleaning of the filter element 30 can be completed by controlling the flow path control device 700 without detaching the filter element 30.
In some embodiments of the invention, the two sliding plugs 40 and the filter cartridge 30 are further arranged such that: when the filter cartridge 30 moves from one side to the other side of the inlet hole 23 in the length direction of the housing 20, the sliding plug 40 located at one side of the inlet hole 23 blocks the outlet hole 24 located at one side of the inlet hole 23. That is, the filter chamber, the two sliding plugs 40 and the filter cartridge 30 are designed to have respective sizes such that, when the filter cartridge 30 is positioned at one side of the inlet hole 23, the sliding plug 40 positioned at the other side of the inlet hole 23 is always positioned at the outlet hole 24 blocking the other side of the inlet hole 23; when the filter cartridge 30 is positioned at the other side of the inlet hole 23, the sliding plug 40 positioned at one side of the inlet hole 23 is always positioned at the outlet hole 24 blocking one side of the inlet hole 23. Preferably, when the filter cartridge 30 is positioned at one side of the inlet hole 23 and is farthest away from the inlet hole 23, the sliding plug 40 at the side of the inlet hole 23 opens the outlet hole 24 at the side. In some alternative embodiments of the present invention, when the filter cartridge 30 is positioned at one side of the inlet hole 23 and is farthest from the inlet hole 23, the sliding plug 40 at the other side of the inlet hole 23 blocks the outlet hole 24 at the other side. With the filter element 30 in any position in the middle, both outlet openings 24 can be drained.
In some embodiments of the invention, in order to reasonably control the travel of the filter cartridge 30 and the two sliding plugs 40, the filter chamber comprises a first section in the middle and two second sections on either side of the first section, each second section having a diameter smaller than the diameter of the first section. And to facilitate movement of the filter element 30, a diameter of a projection of the filter element 30 on a plane perpendicular to a length direction of the housing 20 is smaller than a diameter of the first section and larger than a diameter of the second section.
In some embodiments of the present invention, each sliding plug 40 may be cylindrical in shape and movably disposed within one of the outlet bores 24; a plurality of first flow guide grooves 41 extending along the length direction of the housing 20 are formed in the peripheral wall of the inner end of each sliding plug 40; a plurality of second guiding grooves 25 extending along the length direction of the housing 20 are formed on the inner wall of the outer end of each outlet hole 24. The first and second guide grooves 41 and 25 may facilitate the flow of water when the sliding plug 40 opens the corresponding outlet hole 24. It should be noted that in this embodiment, in order to facilitate the movement of the sliding plug 40, the diameter of the thickest position of the sliding plug 40 may be slightly smaller than the inner diameter of the outlet hole 24, and when the sliding plug 40 blocks the outlet hole 24, a slight gap may exist between the sliding plug 40 and the outlet hole 24, and water in the gap may form a sealing effect, which is also understood as the case where the sliding plug 40 blocks the outlet hole 24. In alternative embodiments of the present invention, each slide plug 40 is movably disposed at an outer end of one of the outlet bores 24, has a diameter greater than an inner diameter of the outlet bore, and is fixedly coupled to the filter cartridge 30 by a linkage. For example, each sliding plug 40 may be a cover or plug disposed at the outer end of one of the outlet bores 24.
In some embodiments of the present invention, the water heater may further include a timer, and the water heater is configured to time the flow path control device 700 to simultaneously open the water flow path between the inlet of the sewage drain pipe 400 and the outlet of the sewage sink pipe 600, and the water flow path between the sewage outlet and the outlet of the sewage sink pipe 600 according to a timing signal from the timer. That is, the timer and the flow channel control device 700 may be electrically connected to the controller 900, and the controller 900 controls the operation of the flow channel control device 700. In other embodiments of the present invention, the water heater further comprises a flow detection device configured to detect a flow rate of water out of a water outlet pipe of the water heater; and the water heater is configured to make the flow path control device 700 simultaneously conduct the water flow path between the inlet of the sewage drain pipe 400 and the outlet of the sewage collecting pipe 600 and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe 600 when the water outlet flow rate is lower than the preset value. In still other embodiments of the present invention, the water heater further includes a triggering device configured to receive an external operation to generate a filtered cleaning and tank blowdown signal. The water heater is configured to allow the flow path control device 700 to simultaneously open the flow path between the inlet of the drain pipe 400 and the outlet of the drain pipe 600 and the flow path between the drain outlet and the outlet of the drain pipe 600 when the filtered cleaning and tank drain signals are acquired. The trigger means may be a mechanical button or a touch button to receive a user's operation to perform the cleaning of the filter cartridge 30 and the draining of the water tank 100.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (9)

1. A water heater comprises a water tank, a water inlet pipe and a drain pipe, wherein the water inlet pipe is configured to convey water into the water tank, and the drain pipe is communicated with the bottom of the water tank; characterized in that, the water heater still includes:
a filter device having a filter element, a water inlet, a clean water outlet and a sewage outlet, configured to controllably cause water from the water inlet to flow out of the clean water outlet after being filtered by the filter element, or to cause water from the water inlet to flow out of the sewage outlet after the filter element is cleaned; the clear water outlet is communicated with the inlet of the water inlet pipe;
a sewage collection pipe configured to receive water from the sewage discharge pipe and the sewage outlet; and
the flow path control device is configured to controllably and simultaneously turn on or off a water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe; and the filtering device further comprises:
the filter comprises a shell, a water inlet hole and two outlet holes, wherein the shell is internally provided with a filter cavity extending along the length direction of the shell, the shell is provided with the water inlet hole communicated with the middle part of the filter cavity, the two outlet holes are respectively positioned at two ends of the filter cavity, the two outlet holes are respectively a clean water outlet hole and a sewage outlet hole, and each outlet hole and the filter cavity are coaxially arranged; the filter element is movably arranged in the filter cavity along the length direction of the shell; and
two sliding plugs, each configured to open one of the outlet ports by moving outward along a length of the housing, the inward movement blocking the outlet port; and is
Each sliding plug is fixed on one side of the filter element, so that when the sliding plug moves outwards to open the outlet hole due to the fact that the pressure on the inner side is larger than the pressure on the outer side, the pressure difference exists between the outer ends of the two sliding plugs and/or the impact of water from the water inlet hole, the filter element is driven to move towards the outlet hole opened or blocked by the sliding plug and move between the water inlet hole and the outlet hole, and therefore the water from the water inlet hole flows out of the outlet hole through the filter element, and the other sliding plug is driven to block the other outlet hole.
2. The water heater of claim 1,
the flow path control device is a first valve and is arranged on the sewage collecting pipe; or
The flow path control device comprises a second valve and a third valve, the second valve is arranged on the sewage discharge pipe, and the third valve is arranged on a pipeline between the sewage outlet and the inlet of the sewage collecting pipe.
3. The water heater of claim 1,
each sliding plug is movably arranged in one outlet hole; and is
A plurality of first flow guide grooves extending along the length direction of the shell are formed in the peripheral wall of the inner end of each sliding plug;
and a plurality of second diversion trenches extending along the length direction of the shell are formed in the inner wall of the outer end of each outlet hole.
4. The water heater of claim 1,
each sliding plug is movably arranged at the outer end of one outlet hole, the diameter of each sliding plug is larger than the inner diameter of the outlet hole, and the sliding plugs are fixedly connected with the filter element through connecting rods.
5. The water heater of claim 1,
when the flow path control device simultaneously conducts the water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe, the filtering device enables water from the water inlet hole to flow out of the sewage outlet hole after the filter element is cleaned.
6. The water heater of claim 1,
when the flow path control device simultaneously turns off the water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and the water flow path between the sewage outlet and the outlet of the sewage collecting pipe, the filtering device enables water from the water inlet to flow out of the clear water outlet after being filtered by the filter element.
7. The water heater of claim 1, further comprising:
the water heater is configured to enable the flow path control device to simultaneously conduct a water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe according to timing signals sent by the timer.
8. The water heater of claim 1, further comprising:
a trigger device configured to receive an external operation to generate a filter element cleaning and water tank blowdown signal; and is
The water heater is configured to enable the flow path control device to simultaneously conduct a water flow path between the inlet of the sewage discharge pipe and the outlet of the sewage collecting pipe and a water flow path between the sewage outlet and the outlet of the sewage collecting pipe when the filter element cleaning and water tank sewage discharge signals are obtained.
9. The water heater of claim 1, further comprising:
the check valve is arranged on the sewage discharge pipe.
CN201610252208.1A 2016-04-21 2016-04-21 Water heater Active CN107303447B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020144952A1 (en) * 2001-04-09 2002-10-10 Saxton Terrence Lee Self-cleaning filter
CN103486723B (en) * 2013-09-24 2016-06-29 芜湖美的厨卫电器制造有限公司 There is electric heater and the method for purifying water of water purification function
CN203501434U (en) * 2013-09-24 2014-03-26 芜湖美的厨卫电器制造有限公司 Electric water heater with water purification function
CN203944192U (en) * 2014-05-08 2014-11-19 芜湖美的厨卫电器制造有限公司 Filter and water heater for water heater
CN204051199U (en) * 2014-08-05 2014-12-31 芜湖美的厨卫电器制造有限公司 For water heater filter and there is its water heater
CN104324549B (en) * 2014-11-18 2017-04-12 珠海格力电器股份有限公司 Flushing system of pipeline-type water purifier and control method of flushing system

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