Detailed description of the invention
Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings.Below by
The embodiment being described with reference to the drawings is exemplary, it is intended to be used for explaining this utility model, and it is not intended that new to this practicality
The restriction of type.
Describe the gas heater according to this utility model embodiment below in conjunction with the accompanying drawings in detail and for gas heater
Heat exchanger 100.
Referring to figs. 1 through shown in Figure 12, wrap according to the heat exchanger 100 for gas heater of this utility model embodiment
Include shell 10, main heat exchanger 20, condensing heat exchanger 30 and installed part.
Defining heat exchanging chamber 101 in shell 10, the top of shell 10 is provided with smoke inlet 104, and the bottom of shell 10 is provided with out
Mouth 105, smoke inlet 104 connects with heat exchanging chamber 101, and outlet flue 105 connects with heat exchanging chamber 101.Main heat exchanger 20 is located at heat exchange
In chamber 101 and between smoke inlet 104 and outlet flue 105, in condensing heat exchanger 30 is located at heat exchanging chamber 101 and be positioned at master
Between heat exchanger 20 and outlet flue.In other words, in main heat exchanger 20 and condensing heat exchanger 30 are respectively positioned on heat exchanging chamber 101 and be positioned at into
Between mouth 104 and outlet flue 105, main heat exchanger 20 is positioned at above condensing heat exchanger 30.Installed part may be mounted at shell 10
In, main heat exchanger 20 and condensing heat exchanger 30 can set on mountings.It is to say, main heat exchanger 20 and condensing heat exchanger 30
The formula that can form as one structure, and be arranged on shell 10 by installed part.
Thus, after main heat exchanger 20 can become an entirety with installed part prepackage with condensing heat exchanger 30, then toward heat exchange
Chamber 101 is installed, assembles more convenient, installation process can reduce the risk that main heat exchanger 20 damages with condensing heat exchanger 30,
Facilitate the component layouts of gas heater simultaneously.There is the gas and hot water of heat exchanger 100 according to this utility model embodiment
Device operationally, fuel gas buring formed flue gas can enter into heat exchanging chamber 101 from smoke inlet 104, in heat exchanging chamber 101 to
Lower flowing, discharges from outlet flue 105 with after main heat exchanger 20 and condensing heat exchanger 30 heat-shift successively, and water can be to upstream
Dynamic, sequentially pass through condensing heat exchanger 30 and main heat exchanger 20, with flue gas generation heat exchange, heat exchange effect is good, and flow of flue gas is relatively
Smooth and easy.
Meanwhile, be positioned at the top load arrangement on main heat exchanger with condensing heat exchanger in correlation technique compared with, according to this reality
Condensing heat exchanger 30 is formed as at lower and main heat exchanger 20 in upper underneath type or inversion with the heat exchanger 100 of new embodiment
Formula structure, makes overall structure the simplest, it is not necessary to be provided for accepting condensation between condensing heat exchanger 30 and main heat exchanger 20
The water-accepting board of the condensed water of heat exchanger 30, condensed water will not drip on main heat exchanger 20, and structure is simpler and more direct, and flow of flue gas mistake
Will not be stopped by water-accepting board in journey, flow more smooth and easy, smoke evacuation property is more preferable.
According to the heat exchanger 100 for gas heater of this utility model embodiment, by arranging installed part and inciting somebody to action
Main heat exchanger 20 and condensing heat exchanger 30 set on mountings, it is possible to achieve main heat exchanger 20 and the integral type of condensing heat exchanger 30
Install, easy to assembly, and inversion type mounting structure is more conducive to flow of flue gas, and structure is simpler and more direct, it is easier to manufactures, simplifies work
Skill, reduces gas leakage risk.
Alternatively, main heat exchanger 20 and condensing heat exchanger 30 can be weldingly connected with installed part and be formed as an entirety.By
This, not only convenient manufacture and assembling, and also structural stability is good.
Structure for condensation chamber does not do particular restriction, can be conventional square in correlation technique, it is also possible to for other
Shape.In more preferably embodiment more of the present utility model, heat exchanging chamber 101 be formed as diameter-changing cavity at least partially, become
The cross-sectional area in chamber, footpath successively decreases from top to bottom, at least provided with condensing heat exchanger 30 in diameter-changing cavity.In other words, the horizontal stroke of heat exchanging chamber 101
Sectional area can change, and condensing heat exchanger 30 can be arranged on the position that cross-sectional area changes, to
Under, heat exchanging chamber 101 can only some cross-sectional area change, i.e. heat exchanging chamber 101 part is diameter-changing cavity, it is also possible to complete
The cross-sectional area in portion all changes, i.e. heat exchanging chamber 101 is integrally formed into diameter-changing cavity, and wherein, the cross-sectional area of diameter-changing cavity is from upper
Successively decreasing under to, thus be formed as contracting O-shaped structure from top to bottom, condensing heat exchanger 30 is located in this contracting O-shaped structure, main heat exchange
Device 20 can be arranged as required to or be not arranged in this contracting O-shaped structure.
During flue gas flows in heat exchanging chamber 101, first pass around relatively large sized part, the most again through chi
Very little relatively small part.Thus, it is possible to relatively large sized at heat exchange efficiency, and outlet flue, it is easy to make flue gas enter
In heat exchanging chamber 101, and flue gas flowing velocity at outlet flue 105 can be improved, be more conducive to smoke evacuation.Meanwhile, this kind changes
Hot chamber 101 is good with main heat exchanger 20 and condensing heat exchanger 30 matching, and the main heat exchanger 20 that can be relatively large sized carries
For relatively large installing space, the condensing heat exchanger 30 for being relatively small in size provides space adaptive therewith, saves heat
The inner space of exchanger 100, can be that gas heater reserves more space simultaneously, in order to install other parts,
Facilitating the interior layout of gas heater, the miniaturization for gas heater provides possibility.
In embodiments more of the present utility model, condensing heat exchanger 30 is usually located at the bottom of heat exchanging chamber 101, therefore,
The bottom of heat exchanging chamber 101 is formed as diameter-changing cavity, and the top of heat exchanging chamber 101 can be diameter-changing cavity, it is also possible to constant for cross-sectional area
Chamber, permanent footpath, the entrance of installation and flue gas to facilitate main heat exchanger 20.Such as, as shown in Figures 1 to 7, condensing heat exchanger
30 bottoms being usually located at heat exchanging chamber 101, main heat exchanger 20 is located substantially at the middle part of heat exchanging chamber 101, the top shape of diameter-changing cavity 101
Becoming the chamber, permanent footpath that cross-sectional area is constant, the bottom of heat exchanging chamber 101 is formed as diameter-changing cavity, and this diameter-changing cavity extends upwardly to main heat exchange
The middle part of device 20.
As it is shown in figure 1, pipe 50 of lowering the temperature, cooling pipe can also be included according to the heat exchanger 100 of this utility model embodiment
50 tops being positioned at heat exchanging chamber 101 and be positioned at above main heat exchange pipe 21, cooling pipe 50 can be located at and the medial wall of shell 10
On face.Thus, shell 10 can be lowered the temperature and shell 10 plays the effect of isolation flue gas by cooling pipe 50, prevents from entering
The high-temperature flue gas that mouth 104 enters is directly impinging in the interior sidewall surface of shell 10, and shell 10 is caused high temperature failure, heat exchange
Device 100 temperature tolerance improves, and is not susceptible to damage.
Installed part not being done to particular restriction, such as, installed part can be plate body or shelf etc..Alternatively, according to this
Some embodiments of utility model, installed part can include that two installing plates 41, two installing plates 41 are respectively provided at main heat exchanger
20 and the two ends of condensing heat exchanger 30.It is to say, the two ends of main heat exchanger 20 are connected with two installing plates 41 respectively, condensation is changed
The two ends of hot device 30 are connected with two installing plates 41 the most respectively.As shown in Figure 1 and Figure 7, two installing plates 41 are in the lateral direction
Spaced apart setting, the left end of main heat exchanger 20 and right-hand member are connected with two installing plates 41 respectively, the left end of condensing heat exchanger 30 and
Right-hand member is connected with two installing plates 41 respectively.Main heat exchanger 20 and condensing heat exchanger 30 can be played support by two installing plates 41
With protective effect, heat exchanger 100 structural stability and heat exchange property are good.
As shown in Figures 1 to 7, formation smoke inlet 104 can be opened wide in the upper end of shell 10, and the upper end of installing plate 41 can set
Having the flange 410 that bent outward is rolled over, flange 410 can stretch out from smoke inlet 104 and be supported on the edge of smoke inlet 104.By
This, it is ensured that the firm of installing plate 41 is installed, and power can be transferred to shell 10 by installing plate 41, makes shell 10 and installs
Plate 41 can bear main heat exchanger 20 and the active force of condensing heat exchanger 30 jointly, and minimizing installing plate 41 stress is excessive and damages
Bad risk, heat exchanger 100 structural stability and reliability improve, and facilitate the installation of heat exchanger 100 simultaneously.
It addition, for convenience of the installation of heat exchanger 100, installing plate 41 can also arrange installation leg 420, concrete and
Speech, as shown in figs. 1 and 12, two installing plates 41 is respectively equipped with one and installs leg 420, install leg 420 from shell 10
Trailing flank on stretch out, in order to other parts realize is connected, installation leg 420 can be formed as the bending shown in Fig. 1
Shape structure, it is of course also possible to be formed as other structure that can conveniently connect.As it is shown in fig. 7, flange 410 is possible not only to arrange
In the upper end of installing plate 41, the lower end of installing plate can also arrange flange 410, and this flange 410 can stretch out shell 10, with convenient
Heat exchanger 100 carries out assembly manipulation.Wherein, in fig. 12, (a) is the top view of installing plate 41, and (b) is a left side for installing plate 41
View, the view of installing plate 41 is individually observed in the left side i.e. standing in shell 10.
The structure of shell 10 is formed as multiple, as shown in Figure 1 and Figure 7, shell 10 can include header board 11, back plate 12,
Left plate 13 and right panel 14, header board 11, back plate 12, left plate 13 and right panel 14 enclose formation heat exchanging chamber 101, heat exchanging chamber 101 upper and lower
Opening wide and arrange, open upper end forms smoke inlet 104, and open at its lower end forms outlet flue 105.Alternatively, header board 11, back plate 12, a left side
At least one in plate 13 and right panel 14 is formed as hang plate, at least some of inwardly downward extension of hang plate.Here,
" inwardly " refers to from heat exchanging chamber 101 outside to the direction within heat exchanging chamber 101.
In other words, two, three or all inclinations in header board 11, back plate 12, left plate 13 and right panel 14
Plate, at least one the inwardly downward extension in the upper, middle and lower of hang plate, when header board 11, back plate 12, left plate 13
With one of them in right panel 14, two or three be hang plate time, in header board 11, back plate 12, left plate 13 and right panel 14 remaining
The other three, another two or another be then relative to vertical direction extend straight plate, wherein, when a part for hang plate is downward
Bend inwards extension time, hang plate can be formed as bending plate;When hang plate bends inwards downwards extension, hang plate is then
It is formed generally as tilting, relative to vertical direction, the straight plate extended.Thus, header board 11, back plate 12, left plate 13 and right panel 14 are permissible
Enclosing and form the heat exchanging chamber 101 that lower dimension is relatively small and upper dimension is relatively large, shell 10 manufactures and easy to assembly.
Such as, as shown in Fig. 1, Fig. 3 and Figure 10, left plate 13 and right panel 14 are the most vertically extending, header board 11 times
Portion tilts to extend rearward, and the bottom of back plate 12 turns forward downwards extension.Thus, heat exchanging chamber 101 can pass through header board 11
Bottom and the common effect of bottom of back plate 12, form the structure of bottom reducing shape, gas fluidity is good.Installed part and left plate
13 are connected with right panel 14, and the installing plate 41 being i.e. positioned at left side can be connected with left plate 13, be positioned on the right side of installing plate 41 can be with
Right panel 14 is connected, and left plate 13 and right panel 14 are respectively formed as straight plate so that two installing plates 41 can also be formed as substantially straight plate,
Can be effectively ensured main heat exchanger 20 and the support effect of condensing heat exchanger 30, be hardly damaged.
In Fig. 10, (a) is the front view of header board 11, and (b) is the left view of header board 11.In fig. 11, outside (a) is for standing in
View during left plate 13, the i.e. right view of left plate 13 are individually observed in the right side of shell 10, and (b) is that the front side standing in shell 10 is individually seen
Examine view during left plate 13, the i.e. front view of left plate 13.
As shown in Fig. 1, Fig. 7 and Figure 10, cooling pipe 50 can be arranged in header board 11 and back plate 12, the trailing flank of header board 11
Installing groove 107 with being provided with on the leading flank of back plate 12, cooling pipe 50 can be located in installation groove 107, thus realizes
Cooling pipe 50 accurately and is firmly installed.
Alternatively, according to embodiments more of the present utility model, the diagonal extension of hang plate and the folder of vertical direction
The span of angle α can be 30 degree of-60 degree.It is to say, the angle α of the diagonal extension of hang plate and vertical direction can
Think 30 degree, can also be 60 degree, it is also possible to be some value between 30 degree of-60 degree, such as, 40 degree, 45 degree or 50 degree etc..
Thus, the angle of inclination of hang plate is moderate, not only convenient manufacture, and the change in size of heat exchanging chamber 101 is relatively slow and formation
Outlet flue 105 size is suitable, it is ensured that the smooth outflow of flue gas, goes out smoke performance good, and good effect of heat exchange.
As shown in Figure 6 and Figure 7, main heat exchanger 20 can include multiple main heat exchange pipe 21, multiple main heat exchange pipes 21 parallel and
Spaced apart setting, was formed with cigarette gap between two adjacent main heat exchange pipes 21, and shell 10 is provided with water inlet 102 and water outlet
Mouth 103, can be respectively equipped with water supply connector 61 and water out adapter for convenience of on assembling and Inlet and outlet water, water inlet 102 and outlet 103
62.Installing plate 41 coordinates with shell 10 and limited aquaporin, crosses aquaporin and connects with water inlet 102 and outlet 103.Peace
Can be provided with multiple first installing hole 401 on dress plate 41, each main heat exchange pipe 21 stretched into through the first corresponding installing hole 401
In aquaporin.
It is to say, the two ends of each main heat exchange pipe 21 seal respectively in being located in the installing plate 41 of correspondence and stretch into correspondence
Cross in aquaporin, make main heat exchange pipe 21 can realize connect with crossing aquaporin, and two installing plates 41 can support main changing
The two ends of hot device 20, support effect is good.Entering the high-temperature flue gas heat exchanging chamber 101 from smoke inlet 104 can be from multiple main heat exchange
Cigarette gap of crossing between device 20 is flow through, and carries out heat exchange with multiple main heat exchange pipes 21, and flow of flue gas is uniformly and heat exchange
Good.For ensureing good connection sealing, main heat exchange pipe 21 can be with the week of the first installing hole 401 along being weldingly connected.
Alternatively, the one side towards installing plate 41 of the one side of the main heat exchanger dorsad 20 of installing plate 41 and shell 10 is extremely
Tank 106 can be provided with on few one, cross tank 106 and can form aquaporin when installing plate 41 is fitted with shell 10.
In other words, the lateral surface of installing plate 41 and/or the medial surface of shell 10 can be provided with tank 106, when outside installing plate 41
Side contacts with the medial surface of shell 10 when being connected, and crosses tank 106 and can form aquaporin.Thus, not only convenient manufacture, and
And water good fluidity.
Such as, as shown in Fig. 7, Figure 11 and Figure 12, installing plate 41 is formed as flat board, and the medial surface of shell 10 was provided with water
Groove 106, crosses tank 106 opening and inwardly and outwards caves in setting.Thus, when installing plate 41 is assembled together with shell 10, peace
Dress plate 41 can be closed crossing tank 106, thus formed aquaporin.Thus, installing plate 41 is not only convenient to be manufactured, and structure
Intensity is higher, it is ensured that the supporting role to main heat exchange pipe 21.
Preferably, crossing aquaporin and can include the subchannel of multiple spaced apart setting, multiple subchannels change with multiple masters
Heat pipe 21 connection forms a water-flowing path.In other words, from water inlet 102 flow into a subchannel water can by one or
Multiple main heat exchange pipes 21 are flowed in another subchannel, and then pass through one or more main heat exchange pipe 21 and be flowed into the 3rd
In subchannel, the like, flowing into the water in last subchannel can be flowed out by outlet 103.Enter from water inlet 102
The water entered can form a complete water-flowing path between multiple main heat exchange pipes 21 and mistake aquaporin, and water is at heat exchanging chamber 101
In can form flow-disturbing, the flow path of water is longer, and the time carrying out heat exchange with flue gas is longer and abundant, and heat exchange effect is good
And efficiency is higher.
As shown in Figure 6 and Figure 7, condensing heat exchanger 30 can include multiple condensing heat-exchanging pipe 31, multiple condensing heat-exchanging pipes 31
Can be spaced apart and be arranged in parallel, could be formed with the mistake for making flue gas pass through between two adjacent condensing heat-exchanging pipes 31
Cigarette gap, installing plate 41 can be provided with multiple second installing hole 402, and each condensing heat-exchanging pipe 31 can be through corresponding second
Installing hole 402 stretched in aquaporin, and condensing heat-exchanging pipe 31 may be located between water inlet 102 and main heat exchange pipe 21.
Thus, condensing heat-exchanging pipe 31 and main heat exchange pipe 21 can be connected to form a water-flowing path, and water enters from water inlet 102
Enter a subchannel of aquaporin, then in condensing heat-exchanging pipe 31, after flue gas generation heat exchange, enter into master
In heat exchanger tube 21, again there is heat exchange with flue gas, flow out from outlet 103 finally by the subchannel crossing aquaporin,
Heat exchange is more abundant, and the heat utilization ratio of flue gas is higher, and efficiency is higher.
For improving the flow of water, water-flowing path is arranged side by side multiple condensing heat-exchanging pipe 31.It is to say, be condensed
In multiple subchannels that heat exchanger tube 31 inserts, each subchannel connects with at least two condensing heat-exchanging pipe 31, intake tunnel, master
On the water-flowing path of heat exchanger tube 21 and condensing heat-exchanging pipe 31 composition, water can be simultaneously at the multiple condensing heat-exchanging pipes being arranged side by side
Flowing between 31, and simultaneously flow into in a main heat exchange pipe 21, making can at condensing heat exchanger 30 on a water-flowing path
To form multi-strand flow side by side.Thus, it is possible to make the relatively small condensing heat-exchanging pipe of radial dimension 31 with radial dimension relatively
Big main heat exchange pipe 21 can keep good coupling, it is ensured that the smooth outflow of current and the effect of heat exchange.
As it is shown in fig. 7, multiple condensing heat-exchanging pipes 31 are segmented into before and after two groups, a group above has eight condensing heat-exchanges
Pipe 31, a group below has seven condensing heat-exchanging pipes 31, before one end of eight condensing heat-exchanging pipes 31 of one group stretch into simultaneously
The subchannel directly connected with water inlet 102, the other end stretches into another subchannel simultaneously, and seven of a group below cold
Solidifying heat exchanger tube 31 also simultaneously with this channel connection.Water, after water inlet 102 enters, can be simultaneously into eight condensations above
In heat exchanger tube 31, it is further separated in seven condensing heat-exchanging pipes 31 below the most simultaneously, is flowed into main heat exchange pipe 31 the most again
In.
It addition, in reality manufactures, two groups of condensing heat-exchanging pipe 31 spaced apart bigger distances of meeting, in order to make flow of flue gas more
Uniformly, the gap between two groups of condensing heat-exchanging pipes 31 can arrange installation pipe, install pipe and two groups of condensing heat-exchanging pipes 31 all between
Separate, and the distance between spaced apart and adjacent two condensing tubes 31 is roughly the same.Thus, it is possible to ensure that flue gas is permissible
Uniformly through condensing heat exchanger 30.
As shown in Figure 6 and Figure 7, condensing heat-exchanging pipe 31 all can be formed as pipe, and condensing heat-exchanging pipe 31 with installing pipe
Radial dimension more than installing the radial dimension of pipe, the two ends installing pipe can be connected with two installing plates 41, and does not wears
In two installing plates 41, to avoid smoke spillage.Alternatively, pipe is installed to be weldingly connected with two installing plates 41, with side
Civilian dress is joined, and improves firmly installing property.Wherein, pipe is installed can directly weld with two installing plates 41, it is also possible to by other portion
Part realizes welding.As shown in Fig. 3, Fig. 6 and Fig. 7, pipe is installed and realizes being connected with condensing heat-exchanging pipe 31 by mounting bracket.
For having the structure of cooling pipe 50, cooling pipe 50 can also be fixed on mountings, specifically, such as Fig. 7
Shown in Figure 12, installing plate 41 can be provided with the 3rd installing hole 403 plugged for cooling pipe 50, the two ends of cooling pipe 50 respectively can
Interior and connected with corresponding subchannel to be plugged in the 3rd installing hole 403 of correspondence, now, cooling pipe 50 can also be positioned at master
On the water-flowing path that heat exchanger tube 21 and condensing heat-exchanging pipe 31 are constituted, water enters from water inlet 102, can sequentially pass through condensing heat-exchange
Pipe 31, main heat exchange pipe 21 and cooling pipe 50, finally flow out from outlet 103, and water increases with the heat exchange number of times of flue gas, heat-exchange time
Extending, heat transfer effect promotes further.
As shown in Figures 1 to 8, multiple main heat exchange can also be included according to the heat exchanger 100 of this utility model embodiment
Sheet 22, it is axially spaced that multiple main heat exchange sheet 22 vertical sleeves are located on main heat exchange pipe 21 and along main heat exchange pipe 21.In other words,
Main heat exchanger 20 not only includes multiple main heat exchange pipe 21, also includes multiple main heat exchange sheet 22, and multiple main heat exchange sheets 22 are the most sheathed
On main heat exchange pipe 21, each main heat exchange pipe 21 is vertical with main heat exchange sheet 22, and multiple main heat exchange sheets 22 are along the axle of main heat exchange pipe 21
To spaced apart.
Thus, can also be formed into cigarette gap between two adjacent main heat exchange sheets 22, flue gas can be with main heat exchange sheet 22
Heat-shift, the heat of exchange can be transferred to and main heat exchange pipe 21, make heat exchange area to strengthen, change by main heat exchange sheet 22 again
Thermal effect improves.As it is shown in fig. 7, first multiple main heat exchange sheets 22 can be connected into an entirety when assembling, then master is changed
Heat pipe 21 inserts in this overall structure, easy to assembly.
Similarly, (figure is not can also to include multiple condensing heat-exchange sheet according to the heat exchanger 100 of this utility model embodiment
Illustrate), it is axially spaced that multiple condensing heat-exchange sheets can be set on condensing heat-exchanging pipe 31 and along condensing heat-exchanging pipe 31.By
This, condensing heat-exchange sheet can increase the heat exchange area of condensing heat exchanger 30, makes heat transfer effect improve further.
According in embodiments more of the present utility model, condensing heat-exchanging pipe 31 and main heat exchange pipe 21, at least one can be formed
For light pipe or corrugated tube.It is to say, condensing heat-exchanging pipe 31 can be formed as light pipe or corrugated tube, main heat exchange pipe 21 can also shape
Become light pipe or corrugated tube, specifically can select flexibly according to assembling demand, heat transfer requirements and flow of flue gas situation etc..
Here, the most ganoid pipe of light pipe, the outer peripheral face of pipe is formed as even surface, corrugated tube i.e. surface tool corrugated pipe, pipe
Outer peripheral face is formed with ripple or screw thread etc..
As shown in Figures 6 to 9, main heat exchange pipe 21 can be formed as flat tube, and the size of flat tube in the vertical direction is more than
Size in horizontal direction.Thus, it is possible to make the main heat exchange pipe 21 can be more than being perpendicular in the size of the flow direction of flue gas
Size on flow of flue gas direction, is possible not only to ensure the smooth outflow of flue gas, and can increase the contact area with flue gas,
Improve heat exchange effect.In fig .9, (a) is the main heat exchange pipe 21 top view when keeping flat, and (b) is that main heat exchange pipe 21 is keeping flat
Time side view.
It is described as a example by the heat exchanger 100 shown in Fig. 1 to 12 below, there is the combustion gas of this heat exchanger 100
In use, the high-temperature flue gas that gas heater produces can enter into heat exchanging chamber 101 from smoke inlet 104 water heater, flue gas
Flow downward, after sequentially passing through cooling pipe 50, main heat exchanger 20 and condensing heat exchanger 30, flow out from outlet flue 105, same with this
Time, water flows into from water inlet 102, enters in condensing heat exchanger 30, and water is successively simultaneously through eight condensing heat-exchanging pipes 31 and seven
Individual condensing heat-exchanging pipe 31, water is successively become stereotyped writing and seven strands of current, and with flue gas generation heat exchange, water temperature raises, carries in flue gas
Water vapour can condense, condense on the tube wall of condensing heat-exchanging pipe 31, then, water continues into main heat exchanger 30
In, water streams in main heat exchange pipe 31, and water and flue gas occur heat exchange again, and after fully absorbing the heat of flue gas, water temperature is again
Raising, afterwards, water is continuously introduced to lower the temperature in pipe 50, and moisture becomes three strands, flows, with flue gas again in three cooling pipes 50 simultaneously
Secondary generation heat exchange, water temperature raises again, and water and flue gas heat exchange are more abundant, and flue gas heat can obtain the most sufficiently returning
Receiving and utilize, energy recovery is effective.
Wherein, owing to main heat exchanger 20 and condensing heat exchanger 30 are assembled into one, simplify technique, reduce gas leakage wind
Danger, heat exchanging chamber 101 is the collapsed shape reduced from top to bottom simultaneously, is more beneficial for condensing heat-exchange, makes changing of condensing heat exchanger 30
Thermal effect promotes, and can be not required to increase condensing heat-exchange sheet i.e. up to the heat exchange efficiency of demand.
Gas heater according to this utility model embodiment can include the heat exchange according to this utility model embodiment
Device 100.Owing to the heat exchanger 100 according to this utility model embodiment has above-mentioned useful technique effect, therefore, according to this
The gas heater manufacture of utility model embodiment and easy to assembly, smoke is good and good effect of heat exchange.
Other of gas heater according to this utility model embodiment constitute and operate the common skill for this area
It is knowable for art personnel, is not described in detail at this.
In description of the present utility model, it is to be understood that term " " center ", " on ", D score, "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " axially ", " radially ", " circumferential "
Or position relationship is based on orientation shown in the drawings or position relationship, it is for only for ease of description this utility model and simplification is retouched
State rather than indicate or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that to restriction of the present utility model.
In description of the present utility model, " multiple " are meant that at least two, such as two, three etc., unless otherwise
Specify concrete restriction.
In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", " Gu
Fixed " etc. term should be interpreted broadly, connect for example, it may be fixing, it is also possible to be to removably connect, or integral;Can be
Be mechanically connected, it is also possible to be electrical connection or each other can communication;Can be to be joined directly together, it is also possible to by the indirect phase of intermediary
Even, can be connection or the interaction relationship of two elements of two element internals, unless otherwise clear and definite restriction.For this
For the those of ordinary skill in field, above-mentioned term concrete meaning in this utility model can be understood as the case may be.
In this utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " can be fisrt feature directly over second feature or oblique upper, or be merely representative of
One characteristic level height is higher than second feature.Fisrt feature second feature " under ", " lower section " can be that fisrt feature is
Immediately below two features or obliquely downward, or it is merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " embodiment ", " specific embodiment ", " example " or " concrete example " etc.
Description means to combine this embodiment or example describes specific features, structure, material or feature be contained in this utility model
At least one embodiment or example in.In this manual, the schematic representation of above-mentioned term is necessarily directed to phase
Same embodiment or example.And, the specific features of description, structure, material or feature can be with one or more enforcements in office
Example or example combine in an appropriate manner.Additionally, in the case of the most conflicting, those skilled in the art can be by this
Different embodiments or the feature of example and different embodiment or example described in description are combined and combine.
Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as that those of ordinary skill in the art is in scope of the present utility model to restriction of the present utility model
In above-described embodiment can be changed, revise, replace and modification.