It is a kind of to cross filtration cock and the kitchen range top cabinet using the tap
Technical field
The invention belongs to purifier field more particularly to a kind of filtration cocks excessively.
Background technology
The utility model patent of Patent No. 201520965816.8 proposes a kind of built-in filter core ceramic tap, described
A kind of built-in filter core ceramic tap is after a certain period of use time, it is necessary to which cleaning in time is mounted on the ceramics inside the tap
The outer wall of filter core, to ensure the rate of filtration and filter quality, it is impossible to accomplish that cleaning is made pottery automatically in the case where not tearing tap open
Porcelain filter core outer wall in use, since the water of tap outflow is all by ceramic element filtering, but wash up or is washed one's face and rinsed one's mouth
With water requirement than relatively low, if being replaced entirely with filtered water, substantially reduce filter element life.
The content of the invention
The technical problems to be solved by the invention are:In view of the deficienciess of the prior art, provide a kind of filter core without dismantling and cleaning
And automatic cleaning filter core and exclude clean under dirt multi-function water tap.
Purpose to realize the present invention, is achieved using following technical scheme:It is a kind of to cross filtration cock, include mixed water
Tap, the cylinder mounted on the combination tap top, mounted on the in vivo ceramic element of the cylinder, mounted on the cylinder with
Brush assembly between the ceramic element is fixedly connected on the connector sleeve of the cylinder upper end and mounted on the connection
The outlet component of set upper side.
The combination tap upper end forms the connecting tube of back taper;The connecting tube upper end form under the cylinder
The connecting portion that portion is connected;The combination tap inner wall lower is equipped with thread bush;The thread bush lower thread is connected with
Nut piece.
The cylinder is in upper end closed, the cylindrical shape of lower ending opening;Cylinder upper end centre position forms drinking water
Water out adapter;The position that the cylinder inner top surface corresponds to the drinking water water out adapter forms filter core connector;On the cylinder
The position different from the drinking water water out adapter is held to form undrinkable water water out adapter.
The ceramic element is in upper end opening, the cylindrical shape of lower end closed;The ceramic element upper end is fixedly connected with
Cover board;The centre position of the upper cover plate forms the water out adapter being fixedly connected with the filter core connector.
The brush assembly includes the retainer plate for being fixedly connected on the cylinder lower part, is fixedly connected on the retainer plate
The outer ring memory alloy spring at end and inner ring memory alloy spring and the scrub plate of circular ring shape;The outer ring memorial alloy bullet
Spring upper end is fixedly connected on the scrub plate lower end;The inner ring memory alloy spring upper end is fixedly connected under the scrub plate
End and the separate outer ring memory alloy spring upper end one side;The scrub plate outer surface, which is fixedly connected, to be useful for brushing ceramic filtering
The brush-washing head of dirt on outer core.
The connector sleeve top is circumferentially uniformly fixedly connected there are three above screw;The screw front end is in hemisphere
Body;Installation limited valve and valve inside the connector sleeve;The pressure limiting valve lower end is fixedly connected on the drinking water of the cylinder
On water out adapter;The valve lower end is fixedly connected on the undrinkable water water out adapter.
The outlet component includes swivel head, is molded over undrinkable water outlet pipe and the rotation of the swivel head side wall
It is connected to drinking water outlet pipe of the swivel head side wall different from the position of undrinkable water outlet pipe;The swivel head side wall shaping
There is the bulb utensil receiving opening with drinking water outlet pipe upper end rotation connection;The swivel head outer wall lower part forms and the spiral shell
Follow closely the sliding groove of front end cooperation;The undrinkable water outlet pipe lower inside is equipped with Water outlet;The Water outlet upper end shaping
There is undrinkable water water supply connector;The undrinkable water outlet pipe lower end is fixedly connected with fixed cover;The drinking water outlet pipe into
Water end (W.E.) forms the bulb with bulb utensil receiving opening rotation connection;The water outlet of the drinking water outlet pipe, which is provided with, to be rotated out of
Head;The rotary water-out rostral wall forms water outlet connecting tube;The water outlet connecting tube and drinking water outlet pipe water outlet
End rotation connection;The water inlet end of the drinking water outlet pipe is connected with pressure limiting valve upper end by the first hose;The undrinkable water
Water supply connector is connected with valve upper end by the second hose.
Preferably:The drinking water water out adapter has been separately formed interior with the undrinkable water water out adapter inner wall
Screw thread;The pressure limiting valve lower part is threadedly coupled with the drinking water water out adapter;The valve lower part and the undrinkable water
Water out adapter is threadedly coupled.
Preferably:The cylinder lower part forms the stage portion with retainer plate cooperation.
Preferably:The connector sleeve lower part offers U-shaped mouth;The U-shaped mouth is engaged with valve outer end.
Preferably:The water outlet connecting tube upper end is threadedly coupled with the water outlet of the drinking water outlet pipe;Institute
It states water outlet connecting tube lower end outer wall and forms the locating ring coordinated with the length adjustment pipe upper end;The water outlet connects pipe outer wall
Position fixing sleeve above the locating ring is connected to sealing ring.
Preferably:The swivel head is made of two halfbodies.
Preferably:Pipe outer wall is fixedly sleeved at least one sealing ring for Water outlet connection.
Preferably:The lower end of the combination tap is connected with cold water pipe and hot-water line;The pipeline of the hot-water line
Upper connection having heaters, the heater include ceramic heater, the metal joint for being connected to ceramic heater both ends,
And to the locking nut on ceramic heater that metal joint is locked;
The ceramic heater includes cylindrical heating pipe portion, is integrally formed the water inlet in heating pipe portion one end and connects
The water outlet pipe of the pipe portion other end is being heated in pipe and integrated molding;It is described water inlet take over, the outer end outer wall of water outlet pipe into
Type has the locating ring of evagination;
The metal joint includes integrally formed heater connections and water pipe head, the heater connections outer end
Inner wall form clamping flange collar with locating ring cooperation positioning, the heater connections inner wall forms positioning step,
Positioning step and water inlet take over, are equipped with seal washer between the end of water outlet pipe;The heater connections outer end is circumferentially
The equidistant notch for forming 3 or more;
The heating pipe portion includes the outer tube part of round tube shape and the cylindrical interior heating inside outer tube part
Pipe;It is connected with multiple connecting columns between the lateral wall of the interior heating tube and the inner wall of outer tube part, the interior heating tube is close to going out
Multiple connecting poles are connected between one end that water is taken over and outer tube part, it is logical that connection water inlet is formed between the adjacent connecting pole of each two
Liquid passage is crossed in road with heating passage;Shaping vertically is there are one exhalant canal in the interior heating tube, exhalant canal one end with
Water outlet pipe is connected;Multiple heating passages are formed positioned at the periphery of exhalant canal in the interior heating tube, each heating is logical
Road is along the circumferentially equidistant arrangement of exhalant canal;The interior heating tube forms the connection heating passage close to one end that water inlet is taken over
With exhalant canal interconnecting part;
Conductivity ceramics is formed in the interior heating tube, there are one be through to outside outer tube part for the interior heating tube side wall shaping
Wire connecting portion;The conductivity ceramics includes multiple conductive rings along interior heating tube axial direction equidistant placement, between each conductive ring
It is connected by the two parallel conductance portions set along interior heating tube length direction, parallel conductance portion is extended in the wire connecting portion;
Each conductive ring includes the first arc-shaped conductive part positioned at each heating passage inner circumferential, positioned at each heating passage periphery
Two the 3rd arc-shaped conductive parts and be connected between the first conductive part both ends and two the 3rd conductive part one end
The second conductive part form, two parallel conductance portions are connected to the other end of two the 3rd conductive parts;
Each conductive ring is connected to form multiple calandrias being arranged in parallel by parallel conductance portion, passes through two in wire connecting portion
Conducting wire is connected with two parallel conductance portions.
The present invention also provides a kind of kitchen range top cabinet, the kitchen range top cabinet upper end is equipped with sink;It is located on the kitchen range top cabinet described
What installation was above-mentioned on the outside of one jiao of sink crosses filtration cock.
Compared with prior art, the beneficial effects of the invention are as follows:The combination tap of the present invention passes through thread bush and spiral shell
Parent part is fixedly connected on the kitchen range top cabinet on the outside of one jiao of sink;When needing to take drinking water, drinking water outlet pipe is first adjusted
With the position of swivel head, valve is closed, opens combination tap, tap water is flowed into from combination tap lower port, passes through ceramic element
Pass through water out adapter successively, drink water swivel, pressure limiting valve, flowed out from drinking water outlet pipe lower end;When needing access drinking water, make
User need to be only rotated the water outlet for rotating out of head to underface, rotated the adjustment of drinking water outlet pipe and rotated out of head to access
Container above, close valve, open combination tap, water just can smoothly flow into needed for access container in, avoid spilling appearance
Outside device;It needs to take drinking water when washing one's face and rinsing one's mouth, user need to only rotate the water outlet for rotating out of head to surface, and rotation is drunk
The adjustment of water outlet pipe rotates out of head to proper height, and closing valve opens combination tap, and water just outwards sprays from bottom to top,
Face need to only be located at by user to be rotated out of above head and close to head is rotated out of, and can just be facilitated and be washed one's face and rinsed one's mouth;It needs to take
During with undrinkable water, valve is first opened, opens combination tap, due to the presence of pressure limiting valve, tap water passes through undrinkable water successively
Water out adapter, valve, undrinkable water connector drive a small amount of dirt between cylinder and ceramic element to be flowed out together from Water outlet;
When combination tap is located at the position of hot water, make the tap water in ceramic heaters heat pipe, it is all heat to flow into the in vivo water of cylinder
Water, outer ring memory alloy spring, simultaneously by thermal stretching, drive scrub plate to move up, cleaning attachment with inner ring memory alloy spring
In the dirt of ceramic element outer wall;When closing combination tap or taking cold water, ceramic heater is no longer heat up, the in vivo temperature of cylinder
It is gradually reduced, outer ring memory alloy spring is shunk simultaneously with inner ring memory alloy spring, and scrub plate is driven to set back;Due to limit
The presence of pressure valve when opening valve, since the hydraulic pressure in drinking water water out adapter is too small, makes tap water all from undrinkable water
Connector flows out;Due to the use of when can combination tap be opened according to use demand, do not have to so as to reach specially outside cleaning ceramic filter core
Wall can just clear up the effect of ceramic element outer wall automatically.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the decomposition texture schematic diagram of the present invention.
Fig. 3 is the structure diagram of cylinder of the present invention, ceramic element and brush assembly.
Fig. 4 is the decomposition texture schematic diagram of cylinder of the present invention, brush assembly and ceramic element.
Fig. 5 is the structure diagram of outlet component of the present invention.
Fig. 6 is the sectional view of outlet component of the present invention.
Fig. 7 is the structure diagram of the combination tap of the present invention.
Fig. 8 is the structure diagram of the multifunctional kitchen range cabinet of the present invention.
Fig. 9 is the sectional view of the multifunctional kitchen range cabinet of the present invention.
Figure 10 is the structure diagram of heater of the present invention.
Figure 11 is the exploded view of heater of the present invention.
Figure 12 is the structure diagram of ceramic heater of the present invention.
Figure 13, Figure 14 are the sectional views of ceramic heater of the present invention.
Figure 15 is the sectional view of heater water pipe head of the present invention.
1st, outlet component;11st, swivel head;111st, sliding groove;112nd, bulb utensil receiving opening;12nd, undrinkable water outlet pipe;13、
Water outlet;14th, fixed cover;15th, drinking water outlet pipe;151st, bulb;16th, head is rotated out of;161st, Water outlet connecting tube;2nd, even
Female connector;31st, pressure limiting valve;32nd, valve;4th, cylinder;41st, drinking water water out adapter;411st, filter core connector;42nd, undrinkable water water outlet
Connector;5th, brush assembly;51st, plate is scrubbed;511st, brush-washing head;521st, outer ring memory alloy spring;522nd, inner ring memorial alloy bullet
Spring;53rd, retainer plate;6th, ceramic element;61st, upper cover plate;62nd, water out adapter;7th, combination tap;71st, connecting tube;711st, connect
Portion;73rd, thread bush;74th, nut piece;8th, kitchen range top cabinet;81st, sink;9th, heater;91st, ceramic heater;911st, water inlet is taken over;
9111st, locating ring;912nd, pipe portion is heated;9121st, outer tube part;9122nd, interior heating tube;9123rd, exhalant canal;9124th, connecting pole;
9125th, passage is heated;9126th, connecting column;9127th, intake tunnel;9128th, interconnecting part;913rd, wire connecting portion;914th, cylinder is connected;
915th, water outlet pipe;916th, conductivity ceramics;9161st, the first conductive part;9162nd, the second conductive part;9163rd, the 3rd conductive part;
9164th, parallel conductance portion;92nd, metal joint;921st, heater connections;9211st, notch;9212nd, clamping flange collar;9213rd, position
Step;922nd, water pipe head;93rd, locking nut;94th, installing plate;95th, connection ring;96th, controller;97th, ultrasonic transducer;
98th, seal washer.
Specific embodiment
The specific embodiment of the present invention is made a detailed explanation below according to attached drawing.
Embodiment 1
According to Fig. 1 to Fig. 7, a kind of filtration cock excessively described in the present embodiment includes combination tap 7, is mounted on
The cylinder 4 on the combination tap top, mounted on the in vivo ceramic element 6 of the cylinder, mounted on the cylinder and the ceramics
Brush assembly 5 between filter core is fixedly connected on the connector sleeve 2 of the cylinder upper end and mounted on the connection set upper side
Outlet component 1.
The combination tap upper end forms the connecting tube 71 of back taper;The connecting tube upper end forms and the cylinder
The connecting portion 711 that lower part is connected;The combination tap inner wall lower is equipped with thread bush 73;The thread bush lower thread
It is connected with nut piece 74.
The cylinder is in upper end closed, the cylindrical shape of lower ending opening;Cylinder upper end centre position forms drinking water
Water out adapter 41;The position that the cylinder inner top surface corresponds to the drinking water water out adapter forms filter core connector 411;The cylinder
Body upper end forms undrinkable water water out adapter 42 different from the position of the drinking water water out adapter.
The ceramic element is in upper end opening, the cylindrical shape of lower end closed;The ceramic element upper end is fixedly connected with
Cover board 61;The centre position of the upper cover plate forms the water out adapter 62 being fixedly connected with the filter core connector.
The brush assembly includes the retainer plate 53 for being fixedly connected on the cylinder lower part, is fixedly connected on the retainer plate
The outer ring memory alloy spring 521 of upper end and inner ring memory alloy spring 522 and the scrub plate 51 of circular ring shape;The outer ring
Memory alloy spring upper end is fixedly connected on the scrub plate lower end;The inner ring memory alloy spring upper end is fixedly connected on institute
State scrub plate lower end and away from the outer ring memory alloy spring upper end one side;The scrub plate outer surface, which is fixedly connected, to be useful for
Brush the brush-washing head 511 of dirt on ceramic element outer wall.
The connector sleeve top is circumferentially uniformly fixedly connected there are three above screw;The screw front end is in hemisphere
Body;Installation limited valve 31 and valve 32 inside the connector sleeve;The pressure limiting valve lower end is fixedly connected on the drink of the cylinder
With on water water out adapter;The valve lower end is fixedly connected on the undrinkable water water out adapter.
The outlet component includes swivel head 11, be molded over the swivel head side wall undrinkable water outlet pipe 12 and
It is rotatably connected on drinking water outlet pipe 15 of the swivel head side wall different from the position of undrinkable water outlet pipe;The rotation rostral
Wall forms the bulb utensil receiving opening 112 with drinking water outlet pipe upper end rotation connection;The swivel head outer wall lower part shaping
There is the sliding groove 111 with screw front end cooperation;The undrinkable water outlet pipe lower inside is equipped with Water outlet 13;It is described
Water outlet upper end forms undrinkable water water supply connector;The undrinkable water outlet pipe lower end is fixedly connected with fixed cover 14;Institute
It states drinking water outlet pipe water inlet end and forms the bulb 151 being rotatablely connected with the bulb utensil receiving opening;The drinking water outlet pipe
Water outlet be provided with and rotate out of head 16;The rotary water-out rostral wall forms water outlet connecting tube 161;The water outlet
Connecting tube is rotatablely connected with drinking water outlet pipe water outlet;The water inlet end of the drinking water outlet pipe and pressure limiting valve upper end pass through the
One hose connects;The undrinkable water water supply connector is connected with valve upper end by the second hose.
The drinking water water out adapter has been separately formed internal thread with the undrinkable water water out adapter inner wall;The pressure limiting
Valve lower part is threadedly coupled with the drinking water water out adapter;The valve lower part connects with the undrinkable water water out adapter screw thread
It connects.
The cylinder lower part forms the stage portion with retainer plate cooperation.
The connector sleeve lower part offers U-shaped mouth;The U-shaped mouth is engaged with valve outer end.
The water outlet connecting tube upper end is threadedly coupled with the water outlet of the drinking water outlet pipe;Under the water outlet connecting tube
End outer wall forms the locating ring with length adjustment pipe upper end cooperation;The water outlet connection pipe outer wall is located at the locating ring
The position fixing sleeve of top is connected to sealing ring.
The halfbody that the swivel head is connected by two by bolt forms, and the bulb utensil receiving opening is by symmetrical molding at two
Two parts on the halfbody are formed.
Pipe outer wall is fixedly sleeved at least one sealing ring for Water outlet connection.
Embodiment 2
According to Fig. 1 to Fig. 9, a kind of kitchen range top cabinet described in the present embodiment;8 upper end of kitchen range top cabinet is equipped with sink
81;It is located on the outside of one jiao of the sink to be equipped with described in embodiment 1 on the kitchen range top cabinet and crosses filtration cock;The combination tap
Lower end be connected with cold water pipe and hot-water line;Having heaters is connected on the pipeline of the hot-water line,
The combination tap of the present invention is fixedly connected on the hearth on the outside of one jiao of sink by thread bush and nut piece
On cabinet;When needing to take drinking water, the position of drinking water outlet pipe and swivel head is first adjusted, closes valve, opens combination tap,
Tap water from combination tap lower port flow into, by ceramic element successively by water out adapter, drink water swivel, pressure limiting valve, from
It flows out drinking water outlet pipe lower end;When needing access drinking water, user need to only rotate the water outlet for rotating out of head to just
Lower section rotates the adjustment of drinking water outlet pipe and rotates out of head to the container top of access, closes valve, open combination tap, water
In the container of access needed for just can smoothly flowing into, avoid spilling outside container;It needs to take drinking water when washing one's face and rinsing one's mouth, user only needs
The water outlet for rotating out of head is rotated to surface, the adjustment of drinking water outlet pipe is rotated and rotates out of head to proper height, close
Valve closing door opens combination tap, and water just outwards sprays from bottom to top, and face need to only be located at by user to be rotated out of above head simultaneously
And close to head is rotated out of, it can just facilitate and wash one's face and rinse one's mouth;When needing to take undrinkable water, valve is first opened, opens combination tap,
Due to the presence of pressure limiting valve, tap water successively by undrinkable water water out adapter, valve, undrinkable water connector, drive cylinder with
A small amount of dirt between ceramic element flows out together from Water outlet;When combination tap is located at the position of hot water, make ceramic heat
Tap water in device heating tube, it is all hot water to flow into the in vivo water of cylinder, outer ring memory alloy spring and inner ring memory alloy spring
Simultaneously by thermal stretching, scrub plate is driven to move up, cleaning is attached to the dirt of ceramic element outer wall;It closes combination tap or takes
During with cold water, ceramic heater is no longer heat up, and the in vivo temperature of cylinder is gradually reduced, and outer ring memory alloy spring is closed with inner ring memory
Golden spring is shunk simultaneously, and scrub plate is driven to set back;Due to the presence of pressure limiting valve, when opening valve, since drinking water goes out
Hydraulic pressure in water swivel is too small, and tap water is made all to be flowed out from undrinkable water connector;Due to the use of when can be beaten according to use demand
Combination tap is opened, ceramic element outer wall can be just cleared up automatically so as to achieve the effect that not having to specially cleaning ceramic filter core outer wall.
Embodiment 3
The present embodiment further includes following characteristics compared with embodiment 1 or 2:
With reference to shown in Figure 10 to Figure 15, the lower end of the combination tap is connected with cold water pipe and hot-water line;The hot-water line
Pipeline on connect having heaters 9, the heater 9 includes ceramic heater 91, is connected to ceramic heater both ends
Metal joint 92 and to the locking nut 93 on ceramic heater that metal joint is locked;
The ceramic heater includes cylindrical heating pipe portion 912, is integrally formed the water inlet in heating pipe portion one end
The water outlet pipe 915 of the pipe portion other end is being heated in take over 911 and integrated molding;The water inlet is taken over, the outer end of water outlet pipe
Portion's outer wall forms the locating ring 9111 of evagination;
The metal joint 92 includes integrally formed heater connections 921 and water pipe head 922, and the heater connects
The inner wall of head outer end forms the clamping flange collar 9212 with locating ring cooperation positioning, the heater connections inner wall shaping
There is positioning step 9213, positioning step and water inlet take over, seal washer 98 are equipped between the end of water outlet pipe;The heating
Device connector outer end circumferentially equidistantly forms the notch 9211 of 3 or more;
It is described heating pipe portion include the outer tube part 9121 of round tube shape and inside outer tube part cylinder in
Heating tube 9122;Intake tunnel 9127, the interior heating are formed between the lateral wall of the interior heating tube and the inner wall of outer tube part
Multiple connecting columns 9126 are connected between the lateral wall of pipe and the inner wall of outer tube part, the interior heating tube is close to the one of water outlet pipe
Multiple connecting poles 9124 are connected between end and outer tube part, connection intake tunnel is formed between the adjacent connecting pole of each two and are added
The passage of heat crosses liquid passage;Shaping is there are one exhalant canal 9123 vertically in the interior heating tube, and exhalant canal one end is with going out
Water, which is taken over, to be connected;In the interior heating tube multiple heating passages 9125, each heating are formed positioned at the periphery of exhalant canal
Passage is along the circumferentially equidistant arrangement of exhalant canal;The interior heating tube forms the connection heating close to one end that water inlet is taken over and leads to
Road and exhalant canal interconnecting part 9128;
Conductivity ceramics 916 is formed in the interior heating tube, there are one be through to outer tube for the interior heating tube side wall shaping
Wire connecting portion outside portion;The conductivity ceramics includes multiple multiple conductive rings along interior heating tube axial direction equidistant placement, each to lead
It is connected between electric circle by the two parallel conductance portions 9164 set along interior heating tube length direction, parallel conductance portion extends to institute
It states in wire connecting portion;Each conductive ring includes the first arc-shaped conductive part positioned at each heating passage inner circumferential, positioned at each
Two the 3rd arc-shaped conductive parts 9163 of heating passage periphery and it is connected to the first conductive part both ends and two the
The second conductive part 9162 between three conductive part one end is formed, and two parallel conductance portions are connected to two the 3rd conductions
The other end in portion;
Each conductive ring is connected to form multiple calandrias being arranged in parallel by parallel conductance portion, passes through two in wire connecting portion
Conducting wire is connected with two parallel conductance portions;
The outer wall shaping of the outer tube part to pass through two semicircular companies there are one cylinder 914, the connection cylinder is connected
The connection of ring 95 is connect there are one ultrasonic transducer 97, the ultrasonic transducer is mounted on an installing plate 94, the installation
Controller 96 is also equipped on plate, includes transducer driving circuit in the controller.
The inner wall shaping of the connection ring there are two interior flange collar, the outer wall of the ultrasonic transducer and connection cylinder it is outer
Wall forms the indent circle being connected with the interior flange collar, is bolted to connection between two connection rings.
Flowmeter is installed, and flowmeter is electrically connected with the controller on the pipeline between the heater and combination tap
It connects, when flowmeter detects that pipeline has current, controller control heater heating;When flowmeter detects what is flowed through in pipeline
When water reaches setting value, ultrasonic transducer 1~5min of work is driven by transducer driving circuit, so that in heater
Incrustation scale departs from the inner wall of heater, it is ensured that heat-conducting effect.
The ceramic heater uses the 3D printing equipment with three print heads based on heat of solution lamination method, passes through a printing
Head printing conductivity ceramics part, the other parts of another printhead prints ceramic heater, in the same of each layer of green body of printing
When use the 3rd print head ceramic heater green body it is hollow part printing paraffin;Low-temperature heat is taken off after the completion of printing
Wax forms the ceramic heater of integral structure after sintering.Certain ceramic heater can also use traditional mold piecemeal
Spliced again after shaping, last sinter molding.
The ceramic heater passes through said structure so that into water therein can sequentially flow through interior heating tube periphery and
Interior heating tube inner circumferential, such water can be sufficiently heated, meanwhile, using such structure, compare the water temperature in intake tunnel
It is low to heat passage, the water temperature of exhalant canal, such ceramic heater shows as middle portion temperature height when working, external temperature is low
Situation, safe to use, stability is good.