CN108489101A - Heat exchanger and water heater - Google Patents
Heat exchanger and water heater Download PDFInfo
- Publication number
- CN108489101A CN108489101A CN201810135631.2A CN201810135631A CN108489101A CN 108489101 A CN108489101 A CN 108489101A CN 201810135631 A CN201810135631 A CN 201810135631A CN 108489101 A CN108489101 A CN 108489101A
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- Prior art keywords
- fluid
- fluid flowing
- flowing path
- heat
- heat exchanger
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
- F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
- F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0246—Arrangements for connecting header boxes with flow lines
Abstract
The present invention relates to the heat exchangers (3) that one kind being equipped with multiple fluid flowing paths (401) (402) (403) with multistage in the height direction, in multiple fluid flowing paths (401) (402) (403), the fluid inlet (13a) and fluid outlet (13b) of the fluid flowing path (403) of lowermost have the flow path cross sectional area of the fluid inlet (11a) and fluid outlet (11b) bigger of the fluid flowing path (401) than uppermost.
Description
Technical field
Burning waste gas be the present invention relates to the use of to flowing through the multiple fluid flowing paths arranged in the height direction with multistage
The heat exchanger that heat exchange heating is carried out by heating fluid, and have the water heater (hot water apparatus) of the heat exchanger.
Background technology
Conventionally, there is known in tank body from top using as latent heat exchanger secondary heat exchanger, as sensible heat heat hand over
Water heater (the Japanese Patent Publication bulletin special open that the main heat exchanger of parallel operation and the sequence of gas burner are arranged
No. 2002-327960).In this water heater, the tank between the main heat-transfer pipe and gas burner of main heat exchanger
The side wall of body is equipped with a part of the coiling water pipe as the fluid flowing path flowed through by heating fluid.
The water sent from feed pipe etc. by heating fluid, from the secondary heat-transfer pipe of secondary heat exchanger, via coiling water pipe, stream
To the main heat-transfer pipe of main heat exchanger.By heating fluid during flowing through the fluid flowing path, the combustion from gas burner is utilized
Exhaust gas is burnt to carrying out heat exchange heating by heating fluid, is added to using end supply by the hot-water outlet pipe connected with main heat-transfer pipe
The fluid of heat.
In above-mentioned water heater, by making a coiling water pipe be wound along the side wall of tank body, the abnormal overheat of side wall is prevented.
Also, have that can utilize to be smoothly discharged out from fluid flowing path by heating fluid in preventing the drain operation freezed
In the water heater of the tank body of enough height, make to wind (for example, opposite in the side wall of tank body with the inclined coiling water pipe of predetermined angular
In 5 degree of degree of level).
But with the arrangement of heat exchanger as described above and gas burner on the contrary, also proposed with directed downwardly
(Japan's patent is public for the water heater of the lower section setting heat exchanger of the gas burner of combustion front, so-called reverse burning formula
Open bulletin special open 2016-169934).
The water heater of this reverse burning formula has to make the flow path resistance caused by coiling water pipe reduce with company
A dispensing head for being connected to multiple fluid flowing paths and one that the is connected with multiple fluid flowing paths main heat for collecting head (collection head) are handed over
Parallel operation.
This multiple fluid flowing paths have the opposite two side walls along shell in the height direction with the straight of multistage arrangement
The heat-transfer pipe of cast.Also, the fluid inlet and fluid outlet of multiple fluid flowing paths converge with a dispensing head and one respectively
Market-head connects.In order to reduce the height of the main heat exchanger with this structure, it is necessary to which each fluid flowing path is set as big
It causes horizontal.
However, if each fluid flowing path is set as approximate horizontal, due to the fluid inlet and stream of each fluid flowing path
Body outlet is located at roughly the same height, therefore the drainage performance of the water from fluid flowing path can deteriorate.In particular, with multistage
In the multiple fluid flowing paths being arranged, to be discharged, water is easy to remain in fluid flowing path the shipwreck in the fluid flowing path of lowermost.Its
As a result, in the state that water remains in fluid flowing path, if winter external air temperature is reduced to 0 DEG C hereinafter, residual water
It can freeze and the volume of residual water can expand, have the danger of fluid flowing path breakage.
Invention content
The present invention is completed in view of the above thing, and the purpose of the present invention is to provide a kind of heat exchanger and use the heat
The water heater of exchanger, though the heat exchanger along shell side wall short transverse with multistage be arranged with multiple fluid flowing paths,
And the fluid inlet and fluid outlet of multiple fluid flowing paths collect respectively with a dispensing head and one in the case that head connect,
It smoothly and can be effectively discharged from multiple fluid flowing paths by heating fluid.
According to an aspect of the present invention, a kind of heat exchanger is provided, including：
Shell, the enclosure interior have the access of burning waste gas；
Multiple fluid flowing paths, the multiple fluid flowing path along the shell at least one side wall, in the up-down direction with
Multistage is arranged；
Dispensing head, the dispensing head are connected to the fluid inlet of the multiple fluid flowing path, to the multiple fluid flowing path
It distributes described by heating fluid；And
Collect head, the head that collects is connected to the fluid outlet of the multiple fluid flowing path, to coming from the multiple fluid
The described of flow path is collected by heating fluid,
Positioned at the fluid inlet of the fluid flowing path of lowermost and the fluid outlet point in the multiple fluid flowing path
Not Ju You than in the multiple fluid flowing path be located at uppermost fluid flowing path the fluid inlet and the fluid outlet more
Big flow path cross sectional area.
Also, according to other aspects of the invention, provide the water heater for having above-mentioned heat exchanger.
According to the present invention, even if being arranged with multiple fluid flowing paths and multiple in short transverse with multistage in the side wall along shell
The fluid inlet and fluid outlet of fluid flowing path collect with a dispensing head and one in the heat exchanger that head is connect respectively, also can
It is discharged smoothly and effectively by heating fluid.Therefore, with make heat-transfer pipe tilt and be wound in shell side wall heat exchanger phase
Than the height of shell can be made to reduce.Thereby, it is possible to provide the heat exchanger for being suitable for reverse burning formula water heater.
Also, there is superior drainage performance due to having the water heater of above-mentioned heat exchanger, even if outside winter
Air themperature reduces, it is also difficult to occur remaining in fluid flowing path to be freezed/expanded by heating fluid.Accordingly, it is difficult to structure occur
At the rupture of the heat-transfer pipe of fluid flowing path and the damaged problem of heat exchanger.Heat with excellent durability can be provided as a result,
Hydrophone.
Description of the drawings
Fig. 1 is the generalized schematic of an example for the water heater that display has the heat exchanger that embodiment of the present invention is related to.
Fig. 2 is the outline exploded perspective of the major part of an example for the heat exchanger for showing that embodiment of the present invention is related to
Figure.
Fig. 3 is the outline amplification section of the major part of an example for the heat exchanger for showing that embodiment of the present invention is related to
Figure.
Fig. 4 is that the outline of the major part of an example for the heat exchanger that display other embodiment of the present invention is related to expands master
View, it is multiple that Fig. 4 A show that the flow path cross sectional area by fluid inlet and fluid outlet is arranged in a manner of becoming larger successively from top
The heat exchanger of fluid flowing path, Fig. 4 B show the fluid inlet and fluid outlet difference of the fluid flowing path with stage casing and lowermost
The fluid inlet and fluid outlet of the fluid flowing path of flow path cross sectional area having the same and stage casing and lowermost are respectively provided with than most
The mode of the fluid inlet of epimere and the flow path cross sectional area of fluid outlet bigger is arranged with the heat exchanger of multiple fluid flowing paths, figure
4C show fluid inlet and fluid outlet with multiple fluid flowing paths with the flow path cross sectional area of fluid inlet and fluid outlet by
The heat exchanger of multiple fluid flowing paths is arranged with according to the mode that uppermost, lowermost and stage casing become larger successively.
Specific implementation mode
The heat exchanger 3 that embodiment of the present invention is related to is assembled in water heater 4.
As shown in Figure 1, in the water heater 4, in gas burner 50 of the upper area setting with combustion front directed downwardly.And
And in the lower section of gas burner 50, it is connected with the shell 30 of the substantially rectangular box-like of heat exchanger 3.Moreover, in shell
30 lower section is connected with the exhaust channel for the outside that the burning waste gas being sent into from gas burner 50 is oriented to water heater 4
31。
In the top of gas burner 50, it is connected with fan unit 5, is sent into the air of the outside of water heater 4 as gas
The combustion air of volumetric combustion device 50.The burning waste gas being discharged from gas burner 50 is admitted to heat exchange using fan unit 5
In device 3, from the interior outside for being discharged to water heater 4 by exhaust channel 31 of shell 30.
As the water being supplied to by the slave feed pipe 41 of heating fluid, the lower half of the shell 30 positioned at heat exchanger 3 is flowed into
Second heat-transfer pipe 2 in partial region, then, the as coiling water pipe of the flow direction positioned at the region of the top half of shell 30
One heat-transfer pipe 1.When water flows successively through these second heat-transfer pipes 2 and the first heat-transfer pipe 1, the combustion from gas burner 50 is utilized
It burns exhaust gas and heat exchange heating is carried out to water, the warm water as the fluid heated is fed into warm water by hot-water outlet pipe 42 and utilizes
End.
Also, the acid effluent of the Surface Creation in thermofin 33 is recycled to draining receiver 40, from drainpipe
43, it is discharged to outside via draining averager (not shown).
As shown in Fig. 2, between opposite front side wall 301 and rear wall 302 in shell 30, by stainless steel system metal shape
At the thermofins 33 of multiple plates be subject to so that defined gap and front side wall 301 and rear wall 302 are longitudinal substantially in parallel
It is arranged side by side.Also, in order to avoid complicating, the thermofin 33 of a part is only shown in Fig. 2.
Also, multiple second biographies that multiple first heat-transfer pipes 1 and stainless steel system metal that stainless steel system metal is formed are formed
Heat pipe 2 is extended in a manner of between the opposite front side wall 301 and rear wall 302 being set up in shell 30 respectively to be set
It sets.Also, the second heat-transfer pipe 2 is arranged in a manner of penetrating through thermofin 33.
Also, in this specification, using the lateral surface of front side wall 301 as the front of heat exchanger 3, shell 30 is seen from front
Depth direction when examining is known as front-rear direction, and width direction is known as left and right directions, and short transverse is known as upper and lower directions.
In the region of substantially lower half portion in shell 30, it is equipped with multiple second heat-transfer pipes 2 (being herein 8).Respectively
A second heat-transfer pipe 2 is made of the elliptical straight tube of section lengthwise.Also, the number of the second heat-transfer pipe 2 can be handed over according to heat
The form of parallel operation 3 is suitably selected.
In Fig. 2, the adjacent two upstream sides open end 2a in left and right is open in the left end of front side wall 301, and the two of left and right adjoining
A downstream side open end 2b in the right-end openings of front side wall 301, in the middle part of front side wall 301 open by four open ends (not shown)
Mouthful.Two upstream sides open end 2a, two downstream sides open end 2b and four open ends are with respectively via being connected to feed pipe 41
Inflow head 21, be connected to the first heat-transfer pipe 1 dispensing head 22 and the interconnected mode of medial head 23 constitute.
Also, although not shown, in rear wall 302, so that eight open ends of 302 side of rear wall of the second heat-transfer pipe 2
It is every four connection modes be provided with left and right two link heads.In this way, forming fluid beneath flow path 410 in shell 30.
The roughly upper half of left and right sidewall 303,304 in shell 30 is substantially horizontally equipped with multiple first and passes
Heat pipe 1 (being herein 6).Each first heat-transfer pipe 1 is made of the roughly circular straight tube in section.Also, the first heat-transfer pipe 1
Number can suitably be selected according to the form of heat exchanger 3.
In Fig. 2, uppermost, stage casing and lowermost 3 heat-transfer pipes 11,12,13, be arranged along right side wall 304, these
Upstream side open end 11a, 12a, 13a, in the right-end openings of front side wall 301, and via dispensing head 22 and the second heat-transfer pipe 2
Downstream side open end 2b is connected to.
Also, 3 other heat-transfer pipes 11,12,13 of uppermost, stage casing and lowermost, are matched along left side wall 303
If these downstream side open end 11b, 12b, 13b, it is open in the left end of front side wall 301, and and be connected to hot-water outlet pipe's 42
Collect first 24 connection.
Although not shown, it is provided on rear side of the open end of the left and right heat-transfer pipe 11 of connection uppermost and connects on rear wall 302
Tieing.Also, on rear wall 302, it is provided with its of the open end connection for the left and right heat-transfer pipe 12,13 for making stage casing and lowermost
His rear side link head.
In this way, the rear and left and right sidewall 302,303,304 with the water of the supply of fluid flowing path 410 from below in shell 30
Roughly upper half in such a way that substantially U-shaped flows side by side, in the up-down direction with three sections formation upper flow flow paths
401、402、403。
Therefore, be connected to dispensing head 22, the first heat-transfer pipe 1 being arranged along right side wall 304 3 upstream sides open end 11a,
12a, 13a constitute the fluid inlet of each upper flow flow path 401,402,403.Also, it is connected to and collects first 24, along left side wall
3 downstream sides open end 11b, 12b, 13b of 303 the first heat-transfer pipes 1 being arranged constitute each upper flow flow path 401,402,
403 fluid outlet.
In embodiments of the present invention, the first heat-transfer pipe 11,12,13 of left and right is with the upstream side of the heat-transfer pipe 13 of lowermost
The opening area (for example, internal diameter 14mm) of open end 13a and downstream side open end 13b are respectively than uppermost and stage casing (from most lower
Section observation when epimere) heat-transfer pipe (heat-transfer pipe of epimere side) 11,12 upstream side open end 11a, 12a and downstream side opening
The mode of opening area (for example, internal diameter 11mm) bigger of 11b, 12b is held to be arranged.Also, the heat-transfer pipe 13 of lowermost with
Compared to the epimere side heat-transfer pipe 11,12 positioned at epimere, more it is subject in the lateral direction to the inside mode outstanding of shell 30
It is arranged.
Each head 21~24 has a main body 21a~24a and skull 21b~24b.It is right that each head main body 21a~24a passes through
The specified position of the front side wall 301 of shell 30 carries out gathering processing, and front side wall 301 is made to be recessed and be formed, each skull inwardly
21b~24b is connected to the periphery of each head main body 21a~24a with fluid-tight state.Each head main body 21a~24a as a result,
Recess portion bottom surface and the back side of each skull 21b~24b between formed with prescribed volume inner space.
The upstream side open end 2a of second heat-transfer pipe 2, the downstream side open end 2b of the second heat-transfer pipe 2 and the first heat-transfer pipe 1
Upstream side open end 11a~13a and the first heat-transfer pipe 1 downstream side open end 11b~13b respectively first 21,22,24
Inner space opening.That is, each head 21~24, upstream side open end 2a, downstream side open end 2b and upstream side open end 11a
~13a and downstream side open end 11b~13b connections.
In the heat exchanger 3 of present embodiment, multiple first heat-transfer pipes 1 are equipped in shell 30.These first heat-transfer pipes 1
Due to along left and right sidewall 303,304, being arranged in above-below direction (herein for 3 sections) with multistage in (short transverse), therefore from
The heat for the high temperature combustion exhaust that the gas burner 50 of top is directed in shell 30 is had by multiple first heat-transfer pipes 1
Effect absorbs.Thus, it is suppressed that the abnormal overheat of left and right sidewall 303,304.
Also, although the first heat-transfer pipe 1 is arranged with three sections in the up-down direction, the heat-transfer pipe 13 of lowermost with
It is more arranged to the inside mode outstanding of shell 30 compared to epimere side heat-transfer pipe 11,12.
Therefore, lowermost heat-transfer pipe 13 can not only effectively be heated by the burning waste gas flowed in shell 30,
Burning waste gas can be made to be flowed towards the inside of shell 30.Therefore, even if the lower half of the left and right sidewall 303,304 along heat exchanger 3
The first heat-transfer pipe 1 is not arranged for part, can prevent the abnormal overheat of left and right sidewall 303,304 conscientiously yet.Also, flow through each top
The water conservancy burning waste gas of fluid flowing path 401,402,403 is heated by effectively heat exchange.
The water heater 4 of present embodiment is in the case where carrying out supply hot water operation, out of feed pipe 41 heat exchanger 3
The water of supply flows into the second heat-transfer pipe 2 from the feed water inlet 20 of the inflow head 21 of lower end in front of the left side for being arranged in shell 30.
Then, the water for flowing through the second heat-transfer pipe 2, the downstream side open end 2b from the lower end in front of the right side of shell 30,
It is fed into the inner space of dispensing head 22.Then, water flows into and adds along right side wall 304 from upstream side open end 11a, 12a, 13a
With the first heat-transfer pipe 1 of arranging.
Also, the water for flowing through each upper flow flow path 401,402,403, from the left end of the front side wall 301 in shell 30
Each downstream side open end 11b, 12b, 13b of upper area opening, flow out to the left upper part from the front side wall 301 of shell 30
The inner space for collecting first 24 that region is arranged to middle section.Flow out to collect first 24 water, via setting collecting first 24
On hot-water outlet 25, be sent to hot-water outlet pipe 42.
On the other hand, the water heater 4 of present embodiment is in the case where carrying out draining, the feed water inlet 20 of water from below
It is discharged.Then, with the draining from feed water inlet 20, remain in the water in the first and second heat-transfer pipes 1,2, with the second heat-transfer pipe
2 upstream side open end 2a is target adverse current in the first and second heat-transfer pipes 1,2.
Also, with above-mentioned draining, fills dispensing head 22 and the water for the inner space for collecting first 24 is reduced, in inner space
The water surface continuously decrease.When the water surface, which is fallen below, collects first 24 hot-water outlet 25, air enters from hot-water outlet 25 to converge
In market-head 24, the volume fractiion of discharged water is gradually replaced into air.
As shown in figure 3, in multiple first heat-transfer pipes 1, the downstream side open end 11b of the heat-transfer pipe 11 of uppermost is first to remittance
Air layer opening in market-head 24.Then, as shown in arrow 1, with dampening gradually from upstream side open end 11a (referring to Fig. 2) quilt
Discharge, air gradually flow into the heat-transfer pipe 11 of uppermost.So, since the water in the heat-transfer pipe of uppermost 11 is preferential
It is discharged, so shipwreck is to remain in the heat-transfer pipe 1 of uppermost.
Then, as the water surface in dispensing head 22 further decreases, the water in the heat-transfer pipe 12 in stage casing is also gradually from upstream
Side opening end 12a is discharged (referring to Fig. 2).Then, as shown in arrow 2, air is flowed into stage casing from downstream side open end 12b
In heat-transfer pipe 12.
Finally, water is discharged from the upstream side open end 13a of the heat-transfer pipe 13 of lowermost (referring to Fig. 2).Although heat-transfer pipe
13 are connected to the inner space for collecting first 24, but upstream side open end 13a is collecting the lower area opening in first 24.Cause
This, to be replaced into air, water is easy to remain in heat-transfer pipe 13 whole shipwrecks in the heat-transfer pipe 13 of lowermost.Moreover,
It compares with uppermost with the heat-transfer pipe 11,12 in stage casing, in the heat-transfer pipe 13 of lowermost, due to passing through water drain so far
Head buckling is low, so water is difficult to be discharged because being applied to the surface tension of upstream side open end 13a.
But the flow path cross sectional area of the upstream side open end 13a due to the heat-transfer pipe of lowermost 13, it is set as comparing uppermost
With the flow path cross sectional area bigger of upstream side open end 11a, 12a of the heat-transfer pipe 11,12 in stage casing, therefore the heat-transfer pipe 13 of lowermost
The amount of interior water is more compared with uppermost and the amount of the water of the heat-transfer pipe 11,12 in stage casing.
Therefore, when drain operation, the head pressure energy in heat-transfer pipe 13, which is increased to overcome, is applied to upstream side open end 13a's
The degree of surface tension.As a result, as shown in arrow 3, air is flowed into heat-transfer pipe 13, the residual in the heat-transfer pipe 13 of lowermost
Water can be successfully discharged.
Also, since the second heat-transfer pipe 2 is made of the excellent elliptical straight tube of section lengthwise of drainage performance, the
Water in two heat-transfer pipes 2 also can be successfully discharged.
According to the above embodiment, even if three heat-transfer pipes 11~13 of uppermost, stage casing and lowermost are respectively along shell
In the case that 30 left and right sidewall 303,304 is substantially horizontally subject to arranging, water also can be quick from any one heat-transfer pipe 11~13
Ground is discharged.Therefore, even if can be prevented if external air temperature is reduced to 0 DEG C of winter below by remaining in heat exchanger 3
The first and second heat-transfer pipes 1,2 in the freezing/expand of water caused by the first and second heat-transfer pipes 1,2 breakage.
Also, according to the above embodiment, in heat exchanger 3, even if each heat-transfer pipe 11~13 substantially horizontally adds
To be arranged, due to can successfully drain, and inclined coiling water pipe is wound onto the heat exchanger phase of the side wall of shell 30
Than the height of shell 30 can also reduced.Therefore, which can be suitably assembled to water heater 4 as shown in Figure 1.
In the above embodiment, as shown in Figures 2 and 3, the upstream side open end of the flow path cross sectional area with identical path
The straight tube of 11a, 12a and downstream side open end 11b, 12b are used as the heat-transfer pipe 11,12 in uppermost and stage casing, and with upper
The straight tube of trip side opening end 13a and downstream side open end 13b is used as the heat-transfer pipe 13 of lowermost, wherein upstream side open end
13a and downstream side open end 13b have than heat-transfer pipe 11,12 upstream side open end 11a, 12a and downstream side open end 11b,
The flow path cross sectional area of 12b biggers.
But the present invention is not particularly limited in the arrangement mode of heat-transfer pipe 11,12,13 as described above.As long as most lower
The upstream side open end 13a and downstream side open end 13b of the heat-transfer pipe 13 of section are respectively provided with upper than the heat-transfer pipe 11 of uppermost
The flow path cross sectional area for swimming side opening end 11a and downstream side open end 11b biggers can be applicable in other heat-transfer pipes as follows
11,12,13 arrangement mode.
For example, as shown in Figure 4 A, also can with upstream side opening end 11a, 12a, 13a and downstream side open end 11b, 12b,
The mode that the flow path cross sectional area of 13b becomes larger from top successively respectively arranges multiple first heat-transfer pipes 11,12,13.
Also, for example, as shown in Figure 4 B, can also be with the heat transfer in stage casing and lowermost (hypomere when from uppermost)
Upstream side open end 12a, 13a and downstream side open end 12b, 13b flow path cross sectional area having the same of pipe 12,13, and hypomere
Upstream side open end 12a, 13a and downstream side opening of side heat-transfer pipe 12,13 compare uppermost with the flow path cross sectional area of 12b, 13b
The mode of flow path cross sectional area bigger of upstream side open end 11a and downstream side open end 11b of heat-transfer pipe 11 arrange multiple
One heat-transfer pipe 11,12,13.
Also, for example, as shown in Figure 4 C, if can also with the upstream side open end 13a of the heat-transfer pipe 13 of lowermost and
The flow path cross sectional area of downstream side open end 13b is respectively than 11 flow path cross sectional area bigger of the heat-transfer pipe of uppermost, the then heat transfer in stage casing
There is the upstream side open end 12a and downstream side open end 12b of pipe 12 mode of maximum flow path cross sectional area to arrange multiple first
Heat-transfer pipe 11,12,13.
Also, in the above-described embodiment, as the heat-transfer pipe of lowermost 13, using with the upper of identical flow path cross sectional area
Swim the straight tube 13 of side opening end 13a and downstream side open end 13b.
But it is also possible to the opening diameter of only upstream side open end 13a and downstream side open end 13b are increased by expander,
The caliber of the middle section of fluid flowing path 403 except two open ends 13a, 13b and the heat-transfer pipe 11 of uppermost or stage casing
The caliber of heat-transfer pipe 12 is identical.Even if the heat-transfer pipe 13 of lowermost has such shape, cut by using with big flow path
The heat-transfer pipe 13 of the upstream side open end 13a and downstream side open end 13b of area, are applied to upstream side open end 13a and downstream
The surface tension of side opening end 13b can also reduce.The water in the heat-transfer pipe 13 of lowermost can be smoothly discharged out as a result,.
Also, the first heat-transfer pipe 1 for constituting upper flow flow path 401,402,403 is not limited to straight tube.For example, could be used that
The substantially U-shaped that upstream side open end 11a, 12a, 13a and downstream side open end 11b, 12b, 13b are only open in front side wall 301
Connecting tube.
Also, upper flow flow path 401,402,403, any one that also can be only along left and right sidewall 303,304 are matched
If.Also, hop count is not limited to three sections.Multiple fluid flowing paths can also be arranged with two sections or 4 sections or more.
Also, water heater 4 can also have the secondary heat exchanger of latent heat recovery type in the lower section of heat exchanger 3.
Although the present invention is described in detail above, summary of the present invention is as follows.
According to an aspect of the invention, there is provided a kind of heat exchanger, including：
Shell, the shell is in the internal access with burning waste gas；
Multiple fluid flowing paths, the multiple fluid flowing path along the shell at least one side wall, in the up-down direction
It is arranged with multistage；
Dispensing head, the dispensing head are connected to the fluid inlet of the multiple fluid flowing path, and to the multiple fluid stream
Road is distributed by heating fluid；And
Collect head, the head that collects is connected to the fluid outlet of the multiple fluid flowing path, and to coming from the multiple stream
The described of body flow path is collected by heating fluid,
Positioned at the fluid inlet of the fluid flowing path of lowermost and the fluid outlet point in the multiple fluid flowing path
Not Ju You than in the multiple fluid flowing path be located at uppermost fluid flowing path the fluid inlet and the fluid outlet more
Big flow path cross sectional area.
According to above-mentioned heat exchanger, by heating fluid via dispensing head, from the side wall along shell in the height direction with more
The fluid inlet of multiple fluid flowing paths of Duan Peishe flows into multiple fluid flowing paths, flows through in multiple fluid flowing paths, from multiple fluids
The fluid outlet of flow path, which flows out to, collects head.Due to multiple fluid flowing paths along burning waste gas the shell of internal flow side wall with
Multistage is arranged, therefore fluid flowing path can efficiently absorb the heat of burning waste gas, can prevent the abnormal overheat of side wall.
Also, it for example, in the draining for the heat exchanger that feed water inlet is arranged more on the lower than hot-water outlet, countercurrently arrives
The upstream side of fluid flowing path is gradually discharged from the feed water inlet of lower position by heating fluid.
Meanwhile air is out of, high position hot-water outlet's incoming fluid flow path.With by the discharge of heating fluid, filling remittance
The inner space of market-head and dispensing head is reduced by heating fluid, and air is flowed into since the fluid outlet for collecting an inner opening
In fluid flowing path, the discharged volume fractiion by heating fluid is gradually replaced with air.
At this moment, due to collecting in being equipped with multiple fluid outlets in short transverse with multistage in head, so air is preferential
It is flowed into from the fluid outlet of the fluid flowing path in the uppermost for collecting an inner opening.Therefore, the quilt in the fluid flowing path of uppermost
Fluid is heated to be easy to be discharged from fluid flowing path.
In contrast, in the heat-transfer pipe of lowermost (13), pass through the discharge head pressure so far by heating fluid
Become minimum.Therefore, it is subject to using the surface tension of the fluid inlet for the fluid flowing path for being applied to lowermost by heating fluid
It keeps, is become to be most difficult to be discharged by heating fluid.
But according to above-mentioned heat exchanger, since the fluid inlet and fluid outlet of the fluid flowing path of lowermost have respectively
There is the flow path cross sectional area of the fluid inlet and fluid outlet bigger of the fluid flowing path than uppermost, so the fluid flowing path of lowermost
The interior amount by heating fluid becomes the amount bigger by heating fluid than uppermost.
The head pressure energy in the fluid flowing path of lowermost increases to the quilt for overcoming the fluid inlet for being applied to lowermost as a result,
The degree for heating the surface tension of fluid can make remaining in the fluid flowing path of lowermost to be smoothly discharged out by heating fluid.
Preferably, in above-mentioned heat exchanger,
In the multiple fluid flowing path, the fluid inlet and the fluid outlet point of whole hypomere side liquid flow paths
It Ju You not be cut than the fluid inlet of the fluid flowing path positioned at the uppermost and the flow path of the fluid outlet bigger
Area, whole hypomere side liquid flow path refer to being located at more hypomere compared with the fluid flowing path positioned at the uppermost
Fluid flowing path.
According to above-mentioned heat exchanger, due to being located at whole hypomeres of more hypomere compared with the fluid flowing path positioned at uppermost
The fluid inlet and fluid outlet of side liquid flow path are respectively provided with the fluid inlet and fluid outlet of the fluid flowing path than uppermost
The flow path cross sectional area of bigger, so the amount by heating fluid in hypomere side liquid flow path becomes than uppermost by heating fluid
Amount bigger.It can make as a result, remaining suitable by heating fluid in the hypomere side liquid flow path of the fluid flowing path comprising lowermost
It is discharged sharply.
Preferably, in above-mentioned heat exchanger,
In the multiple fluid flowing path, it is located at the fluid inlet of the fluid flowing path of the lowermost and described
Fluid outlet is respectively provided with the flow path of the fluid inlet and the fluid outlet bigger than whole epimere side liquid flow paths
Sectional area, whole epimere side liquid flow path refer to compared with the fluid flowing path positioned at the lowermost positioned at upper
The fluid flowing path of section.
As previously discussed, it is most difficult to be discharged by heating fluid in the fluid flowing path of lowermost.
But according to above-mentioned heat exchanger, since the fluid inlet and fluid outlet of the fluid flowing path of lowermost have respectively
There are the fluid inlet and stream of whole epimere side liquid flow paths than being located at more epimere compared with the fluid flowing path positioned at lowermost
Body exports the flow path cross sectional area of bigger, so the amount by heating fluid in the fluid flowing path of lowermost becomes than epimere side liquid
The amount bigger by heating fluid of flow path.It can make as a result, remaining more smooth by heating fluid in the heat-transfer pipe of lowermost
Ground is discharged.
Preferably, in above-mentioned heat exchanger,
In the multiple fluid flowing path, when viewed from above, the fluid flowing path positioned at the lowermost is to compare
More it is arranged to the inside mode outstanding of the shell in whole epimere side liquid flow paths, whole epimere effluent
Body flow path refers to the fluid flowing path for being located at more epimere compared with the fluid flowing path positioned at the lowermost.
According to above-mentioned heat exchanger, the burning waste gas flowed in shell can not only be utilized to have the fluid flowing path of lowermost
Effect is heated, and burning waste gas can also flowed towards the inside of shell.Therefore, the exception of the side wall of shell can be prevented securely from
Overheat.Also, can using burning waste gas to flow through fluid flowing path by heating fluid carry out effectively heat exchange heat.
Also, according to other aspects of the invention, provide the water heater for having above-mentioned heat exchanger.
By using above-mentioned heat exchanger, drainage performance can be made to improve.Therefore, it can be prevented securely from by residual in fluid flowing path
The breakage of heat exchanger caused by the freezing/expand of heating fluid stayed.The water heater of excellent durability can be obtained as a result,.
Claims (5)
1. a kind of heat exchanger, which is characterized in that including：
Shell, the shell is in the internal access with burning waste gas；
Multiple fluid flowing paths, the multiple fluid flowing path along the shell at least one side wall in the up-down direction with multistage
It is arranged；
Dispensing head, the dispensing head are connected to the fluid inlet of the multiple fluid flowing path, and are divided to the multiple fluid flowing path
With by heating fluid；And
Collect head, the head that collects is connected to the fluid outlet of the multiple fluid flowing path, and to coming from the multiple fluid stream
The described of road is collected by heating fluid,
Have respectively positioned at the fluid inlet of the fluid flowing path of lowermost and the fluid outlet in the multiple fluid flowing path
There are the fluid inlet of the fluid flowing path than being located at uppermost in the multiple fluid flowing path and the fluid outlet bigger
Flow path cross sectional area.
2. heat exchanger according to claim 1, which is characterized in that in the multiple fluid flowing path, whole hypomere effluents
The fluid inlet and the fluid outlet of body flow path are respectively provided with the institute than the fluid flowing path positioned at the uppermost
The flow path cross sectional area of fluid inlet and the fluid outlet bigger is stated, the whole hypomere side liquid flow path refers to and positioned at described
The fluid flowing path of uppermost compares the fluid flowing path positioned at more hypomere.
3. heat exchanger according to claim 1, which is characterized in that in the multiple fluid flowing path, be located at described most lower
The fluid inlet and the fluid outlet of the fluid flowing path of section are respectively provided with the institute than whole epimere side liquid flow paths
The flow path cross sectional area of fluid inlet and the fluid outlet bigger is stated, the whole epimere side liquid flow path refers to and positioned at described
The fluid flowing path of lowermost compares the fluid flowing path positioned at more epimere.
4. the heat exchanger according to any one of Claim 1-3, which is characterized in that in the multiple fluid flowing path, from
Top observe when, be located at the lowermost the fluid flowing path with compared to whole epimere side liquid flow paths more to the shell
Inside mode outstanding be arranged, it is described whole epimere side liquid flow paths refer to positioned at the lowermost the fluid flowing path
Compared to the fluid flowing path positioned at more epimere.
5. a kind of water heater, which is characterized in that the water heater is for the heat exchanger described in any one of claim 1 to 4.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-026634 | 2017-02-16 | ||
| JP2017026634A JP2018132256A (en) | 2017-02-16 | 2017-02-16 | Heat exchanger and water heater using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108489101A true CN108489101A (en) | 2018-09-04 |
Family
ID=63105024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810135631.2A Pending CN108489101A (en) | 2017-02-16 | 2018-02-09 | Heat exchanger and water heater |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20180231333A1 (en) |
| JP (1) | JP2018132256A (en) |
| KR (1) | KR20180094804A (en) |
| CN (1) | CN108489101A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7357208B2 (en) * | 2019-11-26 | 2023-10-06 | 株式会社ノーリツ | Heat exchanger and water heating equipment equipped with the same |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112005000642T5 (en) * | 2004-03-25 | 2007-02-22 | Noritz Corporation, Kobe | heater |
| WO2005108875A1 (en) * | 2004-05-11 | 2005-11-17 | Noritz Corporation | Heat exchanger and water heating device |
| JP5565611B2 (en) * | 2009-12-25 | 2014-08-06 | 株式会社ノーリツ | Heat exchanger and hot water device provided with the same |
| CA2797413C (en) * | 2010-04-26 | 2017-02-28 | Rinnai Corporation | Heat exchanger |
| CN102367990B (en) * | 2011-11-10 | 2014-02-26 | 艾欧史密斯(中国)热水器有限公司 | Constant-temperature condensation gas water heater and control method thereof |
| JP6085967B2 (en) * | 2012-12-26 | 2017-03-01 | 株式会社ノーリツ | Heat exchanger and water heater provided with the same |
| US10107506B2 (en) * | 2013-04-03 | 2018-10-23 | Trane International Inc. | Heat exchanger with differentiated resistance flowpaths |
| JP6657932B2 (en) * | 2015-12-25 | 2020-03-04 | 株式会社ノーリツ | Heat exchangers and hot water equipment |
-
2017
- 2017-02-16 JP JP2017026634A patent/JP2018132256A/en active Pending
-
2018
- 2018-02-09 CN CN201810135631.2A patent/CN108489101A/en active Pending
- 2018-02-13 KR KR1020180017762A patent/KR20180094804A/en unknown
- 2018-02-15 US US15/897,244 patent/US20180231333A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| US20180231333A1 (en) | 2018-08-16 |
| KR20180094804A (en) | 2018-08-24 |
| JP2018132256A (en) | 2018-08-23 |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180904 |
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| WD01 | Invention patent application deemed withdrawn after publication |