CN2729573Y - Waste heat recoverying apparatus of water heater - Google Patents

Abstract

The utility model provides a waste heat recovering apparatus of a water heater which comprises a combustion furnace seat and a heat exchange unit provided above the combustion furnace seat, The heat exchange unit is provided with a plurality of heat conducting fins which are arranged side by side and a hollow heat exchange disk pipe which penetrates through the heat conducting fins; working fluid is contained in the hollow heat exchange disk pipel. The waste heat recovering apparatus of the water heater is positioned on the top of the heat exchange unit; the waste heat recovering apparatus of water heater is provided with a hollow inner pipe, an outer pipe and liquid inorganic superconductive conductors which are sealed and are provided in the inner pipe and the outer pipe. The high-temperature flue gas generated by the combustion furnace seat floats upward; by utilizing the good heat transfer properties, when the working fluid firstly flows into the waste heat recovering unit when the working fluid flows into the water heater, and then the working fluid flows into the heat exchange unit after preheated; the waste heat recovering apparatus catches heat energy which fails to exchange the heat with the heat exchange unit, so the heat utilizing efficiency of the water heater comes to the maximum.

Description

The waste heat recovery plant of water heater

[technical field]

The utility model relates to a kind of waste heat recovery plant, particularly relates to a kind of waste heat recovery plant of water heater.

[background technology]

As shown in Figure 1, it is an existing hot water apparatus, be by hot conducted rod (figure does not show) and heat conduction fin 12, reach the structure that shell 13 combines, the absorber plate 15 of heat-absorbing water pipe combustion chamber 14 is being welded in hot conducted rod connection, the heat that is produced when utilizing burning conducts to hot conducted rod and heat conduction fin 12, makes whole heater fuse become high-temperature body and adds hot-air and use for burning.

When continuing to add hot-air, combustion chamber 14 becomes high temperature air, high temperature air is carrying heat energy because of density is lower and is upwards waving gradually, heat exchange takes place in the high temperature air of a part and the absorber plate 15 of 14 tops, combustion chamber, hot conducted rod, heat conduction fin 12 threes, high temperature air and another high temperature air that does not partly carry out heat exchange of finishing heat exchange continue upwards to wave, and overflow wandering from an exhaust outlet 16 of this shell 13 at last.

This existing hot water apparatus utilization reduces cold air and absorber plate 15, heat-absorbing water pipe produce violent convection current, and disperses wind-force with hot conducted rod and heat conduction fin 12, avoids the incomplete phenomenon of combustion chamber 14 internal combustion, and then improves the function of water heater.

Though this existing hot water apparatus can reduce cross-ventilation and high wind pours into the puzzlement that causes combustion chamber 14 temperature to reduce, but can't effectively avoid the incomplete problem of heat exchanger effectiveness, that is to say, air can be heated to be become high temperature air and upwards waves, and with hot conducted rod, heat exchange takes place in heat conduction fin 12, but still the high temperature air of some is failed and hot conducted rod, heat exchange takes place in heat conduction fin 12, then directly scatter and disappear from this exhaust outlet 16, this heat energy that partly scatters and disappears is about 50%, though and another high temperature air partly successfully with hot conducted rod, heat conduction fin 12 carries out heat exchange, but before leaving this hot water apparatus, still carry a part of without the heat energy that fully exchanges, the heat energy that disengage combustion chamber 14 is failed by hot conducted rod, heat conduction fin 12 absorbs, high temperature air is being with heat energy together from exhaust outlet 16 loss on the contrary, this heat energy that partly scatters and disappears is about 10%, cause heat exchanger effectiveness undesirable virtually, therefore how to utilize and reclaim the heat energy that is produced when burning as much as possible fully, promote the service efficiency of water heater whereby, just become the target of endeavouring to pursue.

[utility model content]

The purpose of this utility model is with the flue gas that carries out heat exchange heat exchange once more to take place in order to provide a kind of, improves the waste heat recovery plant of the water heater of thermal energy exchange and service efficiency whereby.

For achieving the above object, the utility model provides a kind of waste heat recovery plant of water heater, this water heater has the combustion furnace seat that a hollow furnace shell, is arranged on the furnace shell bottom, and one be arranged in the furnace shell and the heat exchange unit of position above this combustion furnace seat, this furnace shell has an exhaust opening that is arranged on the furnace shell top, this heat exchange unit has several pieces conducting strips that is arranged side by side, an and hollow heat exchanger coil that wore this conducting strip, ccontaining working fluid in this heat exchanger coil is characterized in that:

This waste heat recovery plant is provided in a side of this heat exchange unit top, and the hollow bowl, with this working fluid circulation of a confession encircles the outer tube that is located at the outer peripheral edges of pipe in this, and a gaseous nitrogen inorganic superconducting body, this inner and outer pipe defines an enclosure space that is filled with for this gaseous nitrogen inorganic superconducting body jointly.

The waste heat recovery plant of described water heater is characterized in that:

Should be helical form with outer tube by interior pipe.

The waste heat recovery plant of water heater of the present utility model is to be installed in the water heater, this water heater has a hollow furnace shell, one is located at the combustion furnace seat of this furnace shell bottom, one is located at the heat exchange unit in this furnace shell, this furnace shell has an exhaust opening that is positioned at the top, this heat exchange unit position is above the combustion furnace seat, and has a conducting strip of several pieces spacing parallel arrangings, one runs through the hollow heat exchanger coil that this counts conducting strip, this heat exchanger coil is to flow for a working fluid, this combustion furnace seat burning back produces the flue gas with heat energy, flue gas and heat exchanger coil carry out heat exchange and blow out toward exhaust opening, waste heat recovery plant of the present utility model is to be located at this heat exchange unit top, and comprise an interior pipe that can flow for this working fluid, one is surrounded on the outer tube of the outer peripheral edges of pipe in this, one by in this, the enclosure space that outer tube defined jointly, the gaseous state inorganic superconducting body of one filling in this enclosure space, this working fluid is when entering this water heater, be to flow to this waste heat recovery plant earlier to enter heat exchange unit then, is with this waste heat recovery plant heat exchange to take place once more at flue gas before exhaust opening is discharged, so that working fluid is prepared heating, but the utility model is at carrying out the secondary heat exchange by the incomplete flue gas of heat exchange unit heat exchange, see through the splendid superconductor of heat exchanger effectiveness and fully reclaim heat energy in the flue gas, and with the heat energy that absorbs gained the working fluid that does not enter heat exchange unit is as yet tentatively heated, improve the efficiency of heating surface of water heater.

[description of drawings]

Fig. 1 is the schematic perspective view of an existing water heater.

Fig. 2 is the user mode schematic diagram of first preferred embodiment of the waste heat recovery plant of the utility model water heater.

Fig. 3 is waste heat recovery plant first preferable of the utility model water heater

The partial sectional view of embodiment.

Fig. 4 is another partial sectional view of first preferred embodiment of the waste heat recovery plant of the utility model water heater.

Fig. 5 is the user mode schematic diagram of second preferred embodiment of the waste heat recovery plant of the utility model water heater.

[specific embodiment]

Be elaborated below by most preferred embodiment and accompanying drawing waste heat recovery plant to the utility model water heater, in the accompanying drawing:

As shown in Figure 2, first preferred embodiment of waste heat recovery plant 2 of the present utility model is to be installed in this water heater 3, this water heater 3 is to be fixed on the wall (figure does not show), and has a hollow furnace shell 31 that is linked on the wall, one is located at a wall and a combustion furnace seat 32 in these furnace shell 31 bottoms, one heat exchange unit 33, one guidings one working fluid that is positioned at these combustion furnace seat 32 tops enters water inlet pipe 34, a tube connector 35, one outlet pipes 36 of this water heater 3.Be to describe as working fluid in the present embodiment with water.

This furnace shell 31 comprises an exhaust opening 311 at the top, this heat exchange unit 33 comprises several pieces interval copper conducting strips 331 side by side, one is extended through the hollow heat exchanger coil 332 of conducting strip 331 agley, the flow direction of this working fluid in water heater 3 is water inlet pipe 34 in regular turn, tube connector 35, heat exchanger coil 332 flows out this water heater 3 by this outlet pipe 36 at last and conduct is used.

As Fig. 2 and shown in Figure 3, this waste heat recovery plant 2 is tops of being located at this heat exchange unit 33, and comprises a hollow bowl 21, one outer tubes 22, one gaseous state inorganic superconducting gases, and this waste heat recovery plant 2 is 35 of water inlet pipe 34 and tube connectors.

This hollow bowl 21 can be for this working fluid circulation, should interior pipe 21 1 ends be to be communicated with this water inlet pipe 34, the other end then is to be communicated with this tube connector 35, this outer tube 22 is the outer peripheral edges that are located on pipe 21 in this, pipe 21, outer tube 22 match and are bent into helical form in being somebody's turn to do, and define a helical form enclosure space 23 jointly, and this gaseous state inorganic superconducting body is to be filled in this enclosure space 23.

As shown in Figure 3 and Figure 4, this combustion furnace seat 32 is to be communicated with a gas pipeline 4 with burning gas to produce the flue gas with heat energy, because high-temperature flue gas density is less, flue gas just little by little up waves, discharge by this exhaust opening 311 at last, in the path that flue gas upwards waves, flue gas with heat energy will meet with this heat exchange unit 33 earlier, copper conducting strip 331 and flue gas generation heat exchange that heat conductivity is splendid, the conducting strip 331 that absorbs heat energy with thermal energy transfer to this heat exchanger coil 332, allow heat exchanger coil 332 and the working fluid that flows in the heat exchanger coil 332 that heat exchange also takes place, and this working fluid heated, make by the temperature working fluid behind this heat exchange unit 33 and improve.

Earlier concerning the flow of flue gas path, after flue gas is by this heat exchange unit 33, continue upwards to wave, before leaving water heater 3 via this exhaust opening 311 as yet, flue gas will not contact this waste heat recovery plant 2, owing to this heat exchange unit 33 heat exchange action takes place in advance in the process that flue gas upwards waves, the part heat energy that flue gas possessed scatters and disappears with conductive form, thereby entrained heat energy has presented relatively low state when flue gas meets with waste heat recovery plant 2.

Take place in the heat exchange action at flue gas and this waste heat recovery plant 2, this superconductor is for the quick conductibility of heat energy, make flue gas the secondary heat exchange to take place apace, and the thermal energy conduction of this superconductor absorption gained is heated to flowing in the working fluid of managing in 21 in this with this waste heat recovery plant 2.

Be subjected to hot path for working fluid again, this working fluid is flowed in this water heater 3 by water inlet pipe 34 earlier, before not flowing into tube connector 35 as yet, this working fluid enters in the interior pipe 21 of this waste heat recovery plant 2, this working fluid and superconductor carry out heat exchange and are heated, the working fluid that flows out pipe 21 in this continues to flow into through this tube connector 35 in the heat exchanger coil 332 of this heat exchange unit 33 and weaves, working fluid flow in the heat exchanger coil 332 and and this heat exchanger coil 332 heat exchanges take place, last working fluid flow to outlet pipe 36 and is sent this water heater 3 for use.

Flue gas blow out exhaust opening 311 before, flue gas earlier carries out heat exchange with conducting strip 331, the heat exchanger coil 332 of heat exchange unit 33, allows the working fluid in this heat exchanger coil 332 reach the function that improves temperature rapidly.

Along with flue gas constantly rises, do not carry out heat exchange in the flue gas and the flue gas of the partial heat energy that scattered and disappeared meets with this waste heat recovery plant 2 once more with this heat exchange unit 33, because of the utility model adopts the very excellent gaseous state inorganic superconducting body of heat conduction efficiency, see through superconductor the heat energy that flue gas carries is carried out strong heat exchange, and the heat energy that will absorb gained further conduct in the working fluid of pipe in 21, make full use of the not forfeiture heat energy that flue gas carries once more.

Waste heat recovery plant 2 of the present utility model is to be installed in 35 of water inlet pipe 34 and tube connectors, this superconductor is behind the heat energy that absorbs flue gas, be that heat energy is directly conducted the working fluid of giving in interior pipe 21, the temperature of working fluid can be improved, after working fluid enters this heat exchange unit 33 through tube connector 35, because working fluid has carried out the warm of waste heat recovery plant 2, this moment, working fluid was to promote temperature apace at heat exchange unit 33 places, and this step is to be equivalent to main heating.

The utility model is by the strong conducting power of superconductor for heat energy, can produce heat exchange with the flue gas that still leaves this water heater 3 without exhaust opening 311, the heat energy of flue gas is absorbed as far as possible fully and change in order to heat this working fluid, with the conversion that is used of the mode of full blast, allow the efficiency of combustion of this combustion furnace seat 32 and gas reach optimum state the heat energy of flue gas.

In addition, because working fluid does not enter as yet and just is subjected to waste heat recovery plant 2 of the present utility model before this heat exchange unit 33 and tentatively heats, after working fluid enters this heat exchanger coil 332, it is just less relatively to be used to heat this working fluid to one predetermined temperature necessary energy, just under this situation that combustion furnace seat 32 is lower in ignition temperature, the gas combustion amount is less, be working fluid can be heated to predetermined temperature, improve the heat exchanger effectiveness of this heat exchange unit 33 indirectly.

As Fig. 5, second preferred embodiment of waste heat recovery plant 2 of the present utility model almost waits a same embodiment, though it is that the position is at these heat exchange unit 33 tops (figure does not show) that special place is this waste heat recovery plant 2, but be to be located at the end face of this furnace shell 31, cover an enclosing cover 24 to increase overall appearance and can cover in these waste heat recovery plant 2 outsides with respect to exhaust opening 311 places.

With a last embodiment relatively after as can be known, a last embodiment is that directly to be installed in the furnace shell 31 of water heater 3 inner and can sell integratedly with water heater 3 and give the consumer, can be installed in as for 2 of the waste heat recovery plants of present embodiment and to have finished water heater 3 tops of setting up, need not change or disassemble fully under the situation of water heater 3, still can fully finish and reclaim heat energy, utilize the purpose of flue gas again by heat exchange unit 33 tops.

Conclude above-mentioned, the utility model waste heat recovery plant 2 sees through the splendid superconductor of thermal conduction effect the discharging flue gas is carried out heat exchange and recovery, make full use of the flue gas that produces through 32 burnings of combustion furnace seat, and before not flowing in this heat exchange unit 33 the main heating of row as yet, working fluid prepares heating, match down with waste heat recovery unit 2 with heat exchange unit 33, really can promote the efficiency of heating surface of water heater 3, thereby reach the purpose of this utility model.

Claims (2)

1. the waste heat recovery plant of a water heater, this water heater has the combustion furnace seat that a hollow furnace shell, is arranged on the furnace shell bottom, and one be arranged in the furnace shell and the heat exchange unit of position above this combustion furnace seat, this furnace shell has an exhaust opening that is arranged on the furnace shell top, this heat exchange unit has several pieces conducting strips that is arranged side by side, and a hollow heat exchanger coil that wore this conducting strip, ccontaining working fluid in this heat exchanger coil is characterized in that:

This waste heat recovery plant is provided in a side of this heat exchange unit top, and the hollow bowl, with this working fluid circulation of a confession encircles the outer tube that is located at the outer peripheral edges of pipe in this, and a gaseous nitrogen inorganic superconducting body, this inner and outer pipe defines an enclosure space that is filled with for this gaseous nitrogen inorganic superconducting body jointly.

2. the waste heat recovery plant of water heater according to claim 1 is characterized in that:

Should be helical form with outer tube by interior pipe.

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