CN104848355A - Domestic hot water heat exchange unit - Google Patents

Domestic hot water heat exchange unit Download PDF

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Publication number
CN104848355A
CN104848355A CN201410583229.2A CN201410583229A CN104848355A CN 104848355 A CN104848355 A CN 104848355A CN 201410583229 A CN201410583229 A CN 201410583229A CN 104848355 A CN104848355 A CN 104848355A
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CN
China
Prior art keywords
plate type
heat exchanger
type heat
hot water
pipe
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Pending
Application number
CN201410583229.2A
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Chinese (zh)
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不公告发明人
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Qingdao Wanli Technology Co Ltd
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Qingdao Wanli Technology Co Ltd
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Priority to CN201410583229.2A priority Critical patent/CN104848355A/en
Publication of CN104848355A publication Critical patent/CN104848355A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18Domestic hot-water supply systems using recuperated or waste heat

Abstract

The invention discloses a domestic hot water heat exchange unit. The domestic hot water heat exchange unit is mainly composed of a first plate type heat exchanger, a second plate type heat exchanger, a circulating pump, an expansion tank and a control cabinet. The first plate type heat exchanger and the second plate type heat exchanger are arranged in a series-connection manner; a first-time side inlet of the first plate type heat exchanger is connected with a heat source water supply pipe, and a first-time side outlet of the first plate type heat exchanger is connected with a first-time side inlet of the second plate type heat exchanger through a connecting pipe; a first-time side outlet of the second plate type heat exchanger is connected with a heat source water returning pipe, and a second-time side inlet of the first plate type heat exchanger is connected with a hot water returning pipe; a second-time side inlet of the second plate type heat exchanger is connected with a cold water supply pipe, and a second-time side outlet of the second plate type heat exchanger is connected with the hot water returning pipe through a preheating pipe. The domestic hot water heat exchange unit has the beneficial effects that the series-connection heat exchange manner of the first plate type exchanger and the second plate type exchanger is adopted for preparing domestic hot water, it is ensured that the hot water output temperature is constant, the heat source utilization rate is improved, the heat energy waste is reduced, the land occupation and investment are saved, and the heat exchange unit has the good application and popularization prospect.

Description

Domestic hot-water's heat-exchange unit
Technical field
The present invention relates to heat-exchange unit technical field, specifically one way of life hot water heat-exchange unit.
Background technology
Along with the development of society and improving constantly of people's living standard, the requirement that people supply hot water is more and more higher, but conflicting be with it exactly energy problem.Plate type heat exchanger has that the thermal efficiency is high, compact conformation, occupation of land less, the advantage such as easy to use, it is high-effect energy-saving heat-exchanger first, but because plate type heat exchanger belongs to Instant heating type heat exchange product, without water storage pondage, hot water temperature may be caused to fluctuate in the application of domestic hot-water supply system and affect normal use.Therefore, all often adopt volumetric heat exchanger, half-volume type heat exchanger, floating coiler heat exhanger or semi instant heating heat exchanger etc. at present in the heat-exchange system of central hot water supply, but these heat exchangers all exist take up an area large, invest problem that is high and energy waste, be unfavorable for the social development demand of energy and land saving.
Summary of the invention
The object of the present invention is to provide a kind of energy-conservation, efficient, take up an area less, reduced investment and the good domestic hot-water's heat-exchange unit of result of use.
The technical solution adopted for the present invention to solve the technical problems is: domestic hot-water's heat-exchange unit is primarily of the first plate type heat exchanger, second plate type heat exchanger, circulating pump, expansion drum and switch board composition, first plate type heat exchanger and the second plate type heat exchanger are arranged in series, the primary side import of the first plate type heat exchanger is connected with thermal source feed pipe, the primary side outlet of the first plate type heat exchanger is connected with the primary side import of the second plate type heat exchanger by tube connector, the primary side outlet of the second plate type heat exchanger is connected with thermal source return pipe, the secondary side import of the first plate type heat exchanger is connected with hot water return pipe, the secondary side outlet of the first plate type heat exchanger is connected with hot water feeding pipe, the secondary side import of the second plate type heat exchanger is connected with cold water supplying pipe, the secondary side outlet of the second plate type heat exchanger is connected with hot water return pipe by economizer bank, hot water return pipe is equiped with filter three in turn along water (flow) direction, safety valve, temperature sensor five, pressure sensor one, circulating pump and check-valves two, walk around circulating pump to be also provided with bypass pipe with check-valves two and to be connected with hot water return pipe, and check-valves three is housed on bypass pipe, after the economizer bank circulating pump that is connected to hot water return pipe connected from the second plate exchanger secondary side outlet and bypass pipe.
Described cold water supplying pipe is equipped with check-valves one, and cold water supplying pipe was also equipped with demineralized water processor, flow detector and filter two before check-valves one, check-valves one is for preventing aqueous reflux, and demineralized water processor is for reducing Ca in water 2+, Mg 2+the sofening treatment of hardness, flow detector is for detecting rate of water make-up, and filter two stays foreign material in water for carrying.
Described hot water feeding pipe is provided with temperature sensor six and pressure sensor two, and is connected with expansion drum, and expansion drum is for cushioning hot swollen shrinkage and reaching the effect of voltage stabilizing and adjust flux.
Described thermal source feed pipe is equipped with temperature-sensing valve, and thermal source feed pipe was equipped with filter one before temperature-sensing valve, thermal source feed pipe is equipped with ultrasonic flowmeter and temperature sensor one after temperature-sensing valve.
Describedly on the tube connector of the first plate type heat exchanger and the second plate type heat exchanger, be provided with temperature sensor two, and tube connector was equipped with magnetic valve one before connection second plate type heat exchanger, walk around magnetic valve one and the second plate type heat exchanger, export the thermal source return pipe that is connected at tube connector and the second plate type heat exchanger primary side between be provided with shunt valve and connect, and magnetic valve two is housed on shunt valve, thermal source return pipe is also provided with temperature sensor three after connection shunt valve.
Described ultrasonic flowmeter, temperature sensor one and temperature sensor three are connected with the heat energy integrating instrument of setting with line respectively, the heat that heat energy integrating instrument exports for measuring thermal source feed pipe.
Described temperature-sensing valve, temperature sensor two, magnetic valve one, magnetic valve two, demineralized water processor, flow detector, temperature sensor four, circulating pump, pressure sensor one, temperature sensor five, temperature sensor six and pressure sensor two separately difference cabling line are connected with switch board.
Operation principle of the present invention is, setting-out source is provided by cold water supplying pipe, the first plate type heat exchanger primary side water outlet waste heat is utilized to carry out preheating to the pressure water source that cold water supplying pipe provides by the second plate type heat exchanger again, then the first plate type heat exchanger heating is entered by economizer bank, the leaving water temperature produced needed for hot water supply is exported by hot water feeding pipe, temperature sensor two detects the tube connector temperature of the first plate type heat exchanger primary side water outlet, temperature sensor four detects the economizer bank temperature of the second plate exchanger secondary side water outlet, temperature sensor six detects hot water feeding pipe's temperature of the second plate exchanger secondary side water outlet, and be provided with out water termostat value, pressure sensor two detects hot water feeding pipe's pressure, the water termostat value that goes out being installed in temperature-sensing valve foundation temperature sensor six setting on thermal source feed pipe regulates thermal source feed pipe flow adaptively, when temperature sensor six detect hot water feeding pipe's temperature lower than setting go out water termostat value time, large thermal source feed pipe flow left by temperature-sensing valve, until standard-sized sheet, when temperature sensor six detect hot water feeding pipe's temperature higher than setting go out water termostat value time, temperature-sensing valve turns down thermal source feed pipe flow, until close, thus make hot water feeding pipe's temperature maintain setting all the time go out in water termostat value, and second the plate type heat exchanger preheating water source that avoids cold water supplying pipe directly enter the first plate type heat exchanger heating and cause differential temperature excessive and the temperature fluctuation that causes, ensure that hot water feeding pipe's temperature constant,
On hot water return pipe, pressure sensor one detects circulating pump intake pressure, and be provided with anhydrous force value, temperature sensor five detects hot water return pipe temperature, and be provided with circulation warm angle value, when temperature sensor five detect hot water return pipe temperature lower than setting circulation warm angle value and following time, circulating pump starts, hot water backwater takes out stains through filter three, be back to after the first plate type heat exchanger heats by hot water return pipe again and export circulation from hot water feeding pipe, cold water supplying pipe provides the deficiency of setting-out source supplemental heat water circulation amount, and after the second plate type heat exchanger preheating, enter the first plate type heat exchanger by economizer bank compensate heating, when temperature sensor five detect hot water return pipe temperature higher than setting circulation warm angle value 5 DEG C and above time, circulating pump stops circulation, when pressure sensor one detect circulating pump intake pressure lower than setting anhydrous force value and following time, circulating pump stoppage protection, when pressure sensor one detect circulating pump intake pressure higher than setting anhydrous force value more than time, circulating pump will recover normal automatically, and the anhydrous force value of setting is preferably in 0.1 ~ 0.2MPa scope.
Described magnetic valve one is opened when the second plate type heat exchanger work, and control for interlocking between magnetic valve one and the magnetic valve two being installed in shunt valve, magnetic valve one opens then magnetic valve two cut out, magnetic valve one cuts out, and magnetic valve two is opened, but magnetic valve one is in opening in dead electricity or when having a power failure.
The invention has the beneficial effects as follows, the present invention adopts the first plate type heat exchanger and the first plate type heat exchanger series connection heat exchange mode to prepare domestic hot-water, ensure that hot water effluent's temperature constant, and improve thermal source utilization rate, reduce thermal waste, save and take up an area and investment, there is good popularizing application prospect.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention.
In figure, 1, thermal source feed pipe, 2, filter one, 3, temperature-sensing valve, 4, ultrasonic flowmeter, 5, heat energy integrating instrument, 6, temperature sensor one, 7, first plate type heat exchanger, 8, temperature sensor two, 9, tube connector, 10, magnetic valve one, 11, shunt valve, 12, magnetic valve two, 13, temperature sensor three, 14, thermal source return pipe, 15, second plate type heat exchanger, 16, check-valves one, 17, demineralized water processor, 18, flow detector, 19, filter two, 20, cold water supplying pipe, 21, economizer bank, 22, temperature sensor four, 23, check-valves two, 24, circulating pump, 25, bypass pipe, 26, pressure sensor one, 27, safety valve, 28, hot water return pipe, 29, filter three, 30, temperature sensor five, 31, hot water feeding pipe, 32, cable, 33, check-valves three, 34, expansion drum, 35, temperature sensor six, 36, pressure sensor two, 37, switch board.
Detailed description of the invention
With regard to accompanying drawing 1, domestic hot-water's heat-exchange unit of the present invention is described in detail below below.
As shown in Figure 1, domestic hot-water's heat-exchange unit of the present invention is primarily of the first plate type heat exchanger 7, second plate type heat exchanger 15, circulating pump 24, expansion drum 34 and switch board 37 form, first plate type heat exchanger 7 and the second plate type heat exchanger 15 are arranged in series, the primary side import of the first plate type heat exchanger 7 is connected with thermal source feed pipe 1, the primary side outlet of the first plate type heat exchanger 7 is connected by the primary side import of tube connector 9 with the second plate type heat exchanger 15, the primary side outlet of the second plate type heat exchanger 15 is connected with thermal source return pipe 14, the secondary side import of the first plate type heat exchanger 7 is connected with hot water return pipe 28, the secondary side outlet of the first plate type heat exchanger 7 is connected with hot water feeding pipe 31, the secondary side import of the second plate type heat exchanger 15 is connected with cold water supplying pipe 20, the secondary side outlet of the second plate type heat exchanger 15 is connected with hot water return pipe 28 by economizer bank 21, hot water return pipe 28 is equiped with filter 3 29 in turn along water (flow) direction, safety valve 27, temperature sensor 5 30, pressure sensor 1, circulating pump 24 and check-valves 2 23, walk around circulating pump 24 to be also provided with bypass pipe 25 with check-valves 2 23 and to be connected with hot water return pipe 28, and on bypass pipe 25, check-valves 3 33 is housed, after economizer bank 21 circulating pump 24 that is connected to hot water return pipe 28 connected from the second plate type heat exchanger 15 secondary side outlet and bypass pipe 25.
Described cold water supplying pipe 20 is equipped with check-valves 1, and cold water supplying pipe 20 was also equipped with demineralized water processor 17, flow detector 18 and filter 2 19 before check-valves 1, check-valves 1 is for preventing aqueous reflux, and demineralized water processor 17 is for reducing Ca in water 2+, Mg 2+the sofening treatment of hardness, flow detector 18 is for detecting rate of water make-up, and filter 2 19 stays foreign material in water for carrying.
Described hot water feeding pipe 31 is provided with temperature sensor 6 35 and pressure sensor 2 36, and is connected with expansion drum 34, and expansion drum 34 is for cushioning hot swollen shrinkage and reaching the effect of voltage stabilizing and adjust flux.
Described thermal source feed pipe 1 is equipped with temperature-sensing valve 3, and thermal source feed pipe 1 was equipped with filter 1 before temperature-sensing valve 3, thermal source feed pipe 1 is equipped with ultrasonic flowmeter 4 and temperature sensor 1 after temperature-sensing valve 3.
Describedly on the tube connector 9 of the first plate type heat exchanger 7 and the second plate type heat exchanger 15, be provided with temperature sensor 28, and tube connector 9 was equipped with magnetic valve 1 before connection second plate type heat exchanger 15, walk around magnetic valve 1 and the second plate type heat exchanger 15, export the thermal source return pipe 14 that is connected at tube connector 9 and the second plate type heat exchanger 15 primary side between be provided with shunt valve 11 and connect, and on shunt valve 11, magnetic valve 2 12 being housed, thermal source return pipe 14 is also provided with temperature sensor 3 13 after connection shunt valve 11.
Described ultrasonic flowmeter 4, temperature sensor 1 and temperature sensor 3 13 are connected with the heat energy integrating instrument 5 of setting with line respectively, the heat that heat energy integrating instrument 5 exports for measuring thermal source feed pipe 1.
Described temperature-sensing valve 3, temperature sensor 28, magnetic valve 1, magnetic valve 2 12, demineralized water processor 17, flow detector 18, temperature sensor 4 22, circulating pump 24, pressure sensor 1, temperature sensor 5 30, temperature sensor 6 35 and the respective cabling line 32 respectively of pressure sensor 2 36 are connected with switch board 37.
Operation principle of the present invention is, setting-out source is provided by cold water supplying pipe 20, the first plate type heat exchanger 7 primary side water outlet waste heat is utilized to carry out preheating to the pressure water source that cold water supplying pipe 20 provides by the second plate type heat exchanger 15 again, then enter the first plate type heat exchanger 7 by economizer bank 21 to heat, the leaving water temperature produced needed for hot water supply is exported by hot water feeding pipe 31, temperature sensor 28 detects tube connector 9 temperature of the first plate type heat exchanger 7 primary side water outlet, temperature sensor 4 22 detects economizer bank 21 temperature of the second plate type heat exchanger 15 secondary side water outlet, temperature sensor 6 35 detects hot water feeding pipe 31 temperature of the second plate type heat exchanger 15 secondary side water outlet, and be provided with out water termostat value, pressure sensor 2 36 detects hot water feeding pipe 31 pressure, be installed in the water termostat value that goes out that the temperature-sensing valve 3 on thermal source feed pipe 1 sets according to temperature sensor 6 35 and regulate thermal source feed pipe 1 flow adaptively, when temperature sensor 6 35 detect hot water feeding pipe 31 temperature lower than setting go out water termostat value time, large thermal source feed pipe 1 flow left by temperature-sensing valve 3, until standard-sized sheet, when temperature sensor 6 35 detect hot water feeding pipe 31 temperature higher than setting go out water termostat value time, temperature-sensing valve 3 turns down thermal source feed pipe 1 flow, until close, thus make hot water feeding pipe 1 temperature maintain setting all the time go out in water termostat value, and second the plate type heat exchanger 15 preheating water source that avoids cold water supplying pipe 20 directly enter the first plate type heat exchanger 7 heating and cause differential temperature excessive and the temperature fluctuation that causes, ensure that hot water feeding pipe 31 temperature constant,
On hot water return pipe 28, pressure sensor 1 detects circulating pump 24 intake pressure, and be provided with anhydrous force value, temperature sensor 5 30 detects hot water return pipe 28 temperature, and be provided with circulation warm angle value, when temperature sensor 5 30 detect hot water return pipe 28 temperature lower than setting circulation warm angle value and following time, circulating pump 24 starts, hot water backwater takes out stains through filter 3 29, be back to after the first plate type heat exchanger 7 heats by hot water return pipe 28 again and export circulation from hot water feeding pipe 31, cold water supplying pipe 20 provides the deficiency of setting-out source supplemental heat water circulation amount, and after the second plate type heat exchanger 15 preheating, enter the first plate type heat exchanger 7 by economizer bank 21 compensate heating, when temperature sensor 5 30 detect hot water return pipe 28 temperature higher than setting circulation warm angle value 5 DEG C and above time, circulating pump 24 stops circulation, when pressure sensor 1 detect circulating pump 24 intake pressure lower than setting anhydrous force value and following time, circulating pump 24 stoppage protection, when pressure sensor 1 detect circulating pump 24 intake pressure higher than setting anhydrous force value more than time, circulating pump 24 will recover normal automatically, and the anhydrous force value of setting is preferably in 0.1 ~ 0.2MPa scope.
Described magnetic valve 1 is opened when the second plate type heat exchanger 15 works, and control for interlocking between magnetic valve 1 and the magnetic valve 2 12 being installed in shunt valve 11, magnetic valve 1 opens then magnetic valve 2 12 and cuts out, magnetic valve 1 cuts out, and magnetic valve 2 12 is opened, but magnetic valve 1 is in opening in dead electricity or when having a power failure.

Claims (5)

1. one way of life hot water heat-exchange unit is primarily of the first plate type heat exchanger, second plate type heat exchanger, circulating pump, expansion drum and switch board composition, it is characterized in that, first plate type heat exchanger and the second plate type heat exchanger are arranged in series, the primary side import of the first plate type heat exchanger is connected with thermal source feed pipe, the primary side outlet of the first plate type heat exchanger is connected with the primary side import of the second plate type heat exchanger by tube connector, the primary side outlet of the second plate type heat exchanger is connected with thermal source return pipe, the secondary side import of the first plate type heat exchanger is connected with hot water return pipe, the secondary side outlet of the first plate type heat exchanger is connected with hot water feeding pipe, the secondary side import of the second plate type heat exchanger is connected with cold water supplying pipe, the secondary side outlet of the second plate type heat exchanger is connected with hot water return pipe by economizer bank, hot water return pipe is equiped with filter three in turn along water (flow) direction, safety valve, temperature sensor five, pressure sensor one, circulating pump and check-valves two, walk around circulating pump to be also provided with bypass pipe with check-valves two and to be connected with hot water return pipe, and check-valves three is housed on bypass pipe, after the economizer bank circulating pump that is connected to hot water return pipe connected from the second plate exchanger secondary side outlet and bypass pipe.
2. domestic hot-water's heat-exchange unit according to claim 1, is characterized in that, described cold water supplying pipe is equipped with check-valves one, and cold water supplying pipe was also equipped with demineralized water processor, flow detector and filter two before check-valves one.
3. domestic hot-water's heat-exchange unit according to claim 1, is characterized in that, described hot water feeding pipe is provided with temperature sensor six and pressure sensor two, and is connected with expansion drum.
4. domestic hot-water's heat-exchange unit according to claim 1, it is characterized in that, described thermal source feed pipe is equipped with temperature-sensing valve, and thermal source feed pipe was equipped with filter one before temperature-sensing valve, thermal source feed pipe is equipped with ultrasonic flowmeter and temperature sensor one after temperature-sensing valve.
5. domestic hot-water's heat-exchange unit according to claim 1, it is characterized in that, describedly on the tube connector of the first plate type heat exchanger and the second plate type heat exchanger, be provided with temperature sensor two, and tube connector was equipped with magnetic valve one before connection second plate type heat exchanger, walk around magnetic valve one and the second plate type heat exchanger, export the thermal source return pipe that is connected at tube connector and the second plate type heat exchanger primary side between be provided with shunt valve and connect, and magnetic valve two is housed on shunt valve, thermal source return pipe is also provided with temperature sensor three after connection shunt valve.
CN201410583229.2A 2014-10-28 2014-10-28 Domestic hot water heat exchange unit Pending CN104848355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410583229.2A CN104848355A (en) 2014-10-28 2014-10-28 Domestic hot water heat exchange unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410583229.2A CN104848355A (en) 2014-10-28 2014-10-28 Domestic hot water heat exchange unit

Publications (1)

Publication Number Publication Date
CN104848355A true CN104848355A (en) 2015-08-19

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Application Number Title Priority Date Filing Date
CN201410583229.2A Pending CN104848355A (en) 2014-10-28 2014-10-28 Domestic hot water heat exchange unit

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091640A (en) * 2015-09-10 2015-11-25 兰州兰石集团有限公司 Plate type heat exchange unit for domestic hot water
CN109764406A (en) * 2019-01-17 2019-05-17 南京索热电子科技有限公司 A kind of heat-exchange system and its implementation with PID constant temperature algorithm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105091640A (en) * 2015-09-10 2015-11-25 兰州兰石集团有限公司 Plate type heat exchange unit for domestic hot water
CN105091640B (en) * 2015-09-10 2017-03-01 兰州兰石集团有限公司 A kind of domestic hot-water's plate-type heat-exchange unit
CN109764406A (en) * 2019-01-17 2019-05-17 南京索热电子科技有限公司 A kind of heat-exchange system and its implementation with PID constant temperature algorithm

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Application publication date: 20150819

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