Background technology
Along with the growing tension of international energy, global greenhouse effect constantly worsens, and country proposes energy-saving and cost-reducing darker requirement, and compatriots' awareness of saving energy is also in further reinforcement.The product development work of comprehensive utilization of energy is very urgent.Progress along with society, air-conditioning has entered into each family substantially, if the used heat that is produced during with air conditioner refrigerating is used for heating the human settlements domestic water, both can exempt with the consumption of hot water the combustion gas equal energy source, also have certain contribution to improving global greenhouse effect.
Air-conditioning UTILIZATION OF VESIDUAL HEAT IN technology analysis: in air-conditioning refrigeration system, to become the gaseous refrigerant of the cold-producing medium boil down to HTHP of gaseous state through the evaporator evaporation that is positioned at indoor set when compressor, and after delivering to the condenser heat radiation that is positioned at off-premises station, gaseous refrigerant becomes the liquid refrigerant of normal temperature high voltage, this part heat is blown out by blower fan and is lost in the air, to environment is a kind of pollution, also is a kind of energy waste.
In recent years, occurred a kind of air source hot pump water heater and air-conditioning UTILIZATION OF VESIDUAL HEAT IN hot water apparatus on the market, traditional air source hot pump water heater can only be that water heater is made in single special use, needs net for air-source heat pump units of investment; And traditional air-conditioning UTILIZATION OF VESIDUAL HEAT IN water heater is that single immersion heat exchanger is set in the water storage incubator, the refrigerant temperature of coming out from compressor is approximately 60-70 ℃, when the water temperature in the water storage incubator reaches more than 50 ℃, exchanger efficiency is very poor, when water storage incubator discharging hot water, when injecting 15-25 ℃ running water again, water temperature in the water storage incubator reduces, when water temperature is lower than 45 ℃, be not suitable for as bathing water, so the recovery heat utilization ratio of this air-conditioning UTILIZATION OF VESIDUAL HEAT IN water heater is quite low, through detection computations, can reclaim the shortage of heat 20% that is used to add hot water, all the other heats of 80% still are discharged into and cause energy waste to pollute in the atmosphere.Though the outdoor used heat that discharges of common air-conditioning is many, temperature is quite low, is kind of a low level energy, special household air-conditioner compressor delivery temperature is 60-70 ℃, and domestic hot water temperature needs about 55 ℃, have only 5-15 ℃ the temperature difference to utilize, so utilization rate is not high.Also have a kind of employing water circulating pump to promote adverse current sleeve pipe recycle heat exchanger on the market, initial heat exchange efficiency height is when the water temperature of water storage incubator during near 55 ℃, the heat exchange effect still is undesirable, hot water also needs a water circulating pump in addition, has increased power consumption, has also increased the chance of fault; In addition, also having another kind of method on the market is compressor exhaust temperature pressure to be raise improve the recuperation of heat amount, but owing to improved condensation temperature, makes the cold effect ratio of refrigeration machine be lowered.
The utility model content
First purpose of the present utility model provides the full recuperation of heat water heater of a kind of domestic air conditioning, can utilize that existing family expenses split-type air conditioner machine carries out add-assembly in the present average family, this water heater can be when air conditioner refrigeration, the whole absorption of the Lowlevel thermal energy of off-premises station discharging is used to heat domestic water, and when the water storage incubator puts hot water and refills running water, can obviously do not reduce the leaving water temperature of hot water outlet.
Second purpose of the present utility model provides the full recuperation of heat water heater of a kind of domestic air conditioning, and its water storage incubator flow greatly puts hot water and need not dispose water pump in addition.
The 3rd purpose of the present utility model provides the full recuperation of heat water heater of a kind of domestic air conditioning, when not using cold air winter, can use this water heater heating domestic water equally.
For realizing above-mentioned first purpose, the utility model has adopted following technical scheme: provide a kind of domestic air conditioning full recuperation of heat water heater, be retrofitted on the normal domestic use split-type air conditioner off-premises station, form indoor apparatus of air conditioner, off-premises station, water heater Trinity refrigeration, heat water system.This water heater comprises the water storage incubator with running water inlet and hot water outlet, be provided with the heat exchanger that is connected in domestic air-conditioning system in this water storage incubator, described heat exchanger is formed by connecting by first order heat exchanger and second level heat exchanger, wherein first order heat exchanger is the immersion heat exchanger that is communicated to the domestic air-conditioning system compressor output end, second level heat exchanger is the bushing type contra-flow heat exchanger, pipe and outer tube in this bushing type contra-flow heat exchanger comprises, interior tube inlet is connected with described immersion heat exchanger, interior pipe outlet is connected with the input of domestic air-conditioning system condenser, one end of outer tube annular space is connected in described running water inlet, and the other end is provided with temperature control Flow-rate adjustment water valve.
The water filling path is: running water water inlet, second level bushing type contra-flow heat exchanger, temperature control Flow-rate adjustment water valve, water storage incubator (immersion heat exchanger), hot water outlet; Refrigerant path is: connect air conditioning chamber external compression machine outlet copper pipe, first order immersion heat exchanger, second level bushing type contra-flow heat exchanger interior pipe, connect air conditioning chamber's external condenser inlet copper pipe.Refrigeration heat release and water heat absorption form reverse circulation.
Above-mentioned two-stage heat exchanger, the first order adopts the immersion heat exchanger all to be immersed in the water of water storage incubator, the 60-70 ℃ of high temperature and high pressure gaseous refrigerant that compressor is discharged at first flows through this immersion heat exchanger, water in the water storage incubator is heated to 55-60 ℃ and constant temperature, and the heat of this process exchange is about 15-20%; The bushing type contra-flow heat exchanger is adopted in the second level, and interior pipe is connected with the immersion heat exchanger, and cold-producing medium flows through from interior pipe, and running water then flows into from the running water inlet, and flows through from the outer tube annular space with opposite direction.After the heat exchange of first order immersion heat exchanger, surplus temperature in the interior pipe is about 55-60 ℃ cold-producing medium and the temperature in the outer tube annular space and is about 15-25 ℃ running water countercurrent flow, heat up 30 ℃ in running water heat absorption back, water temperature is about 40-50 ℃ when arriving the outlet of outer tube annular space, cooling is 25 ℃ after the cold-producing medium heat release in the interior pipe, the temperature of coming out from interior pipe is about 20-30 ℃, exchanging in the running water by the bushing type contra-flow heat exchanger more than 80% of heat that air conditioner refrigerating produces, thereby realized the utilization very of air-conditioning waste heat, solved the low technical barrier of other air-conditioning residue heat water heater heat energy utilization rate.
The utility model is between first order heat exchanger and second level heat exchanger, the exit that is to say the outer tube annular space has disposed a temperature control Flow-rate adjustment water valve, to control the flow that injects water according to the water temperature after the heating, the heating capacity of injected water volume and air conditioner is complementary, the water temperature of injecting the water storage incubator is controlled on the temperature of setting, when the water storage incubator puts hot water and refills running water, can obviously reduce the leaving water temperature of hot water outlet.When air-conditioning is closed, owing to adopted temperature control Flow-rate adjustment water valve, when the water temperature in the heat exchanger of the second level does not reach design temperature (for example 40 ℃), temperature control Flow-rate adjustment water valve is a closed condition, so can be towards the hot water in the cold water storage incubator, leaving water temperature can not reduce, and has solved other air-conditioning residue heat water heater obsolete technical barrier of hot water when air-conditioning is not started shooting.
In order to realize above-mentioned second purpose, described water storage incubator adopts bearing structure, air breathing district and storage area have been comprised in it, utilize the hydraulic pressure of running water that the air in the water storage incubator is compressed during entry, running water flows into the storage area of reinjecting after the bushing type contra-flow heat exchanger heats by certain flow, and continues heating and constant temperature by first order immersion heat exchanger.When using hot water, because the bulbs of pressure of water storage incubator compressed air, flow puts hot water greatly does not need to dispose in addition water pump, has satisfied living needses such as shower, has improved energy-conservationly, and system is simple, practical and stablize.
In order to realize above-mentioned the 3rd purpose, have additional the additional capillary and first bypass solenoid valve between described bushing type contra-flow heat exchanger and the domestic air-conditioning system condenser, be provided with second bypass solenoid valve between the input original capillaceous of domestic air-conditioning system and the input of described compressor.Such scheme changes the single-cooling type air conditioner into air source heat pump and heats water system by control valve, throttling and by-pass governing are installed, and is air conditioner refrigerating, hot water two purpose system, and exempt from power consumption with refrigeration and heat water summer, and drive heat pump and heat water winter.Winter is during the indoor apparatus of air conditioner running refrigerating, air-conditioner outdoor unit can adopt contrary Carnot cycle principle to heat, be installed at outdoor first bypass solenoid valve action and close the main road straight tube, second bypass solenoid valve is opened, make the condenser of off-premises station change the evaporimeter of heat pump hot-water system into thus, the low-temp low-pressure liquid refrigerant that flows through outdoor condenser (as evaporimeter) this moment will become the normal temperature gaseous refrigerant by carburation by evaporation by the heat that absorbs in the surrounding air, directly be bypassed to compressor by second bypass solenoid valve (without original capillary and indoor set), the liquid refrigerant of boil down to HTHP, temperature can reach 75-85 ℃, deliver to the heat exchanger in the water storage incubator then, the liquid refrigerant of HTHP is the condensation heat release in heat exchanger, heat efficient all reclaims this moment, and this technological break-through has solved this difficult problem that the single-cooling type family expenses can not use air conditioner and water heater.
The input of described compressor is provided with anti-low pressure and anti-frosting protection switch, and output is provided with anti-high pressure and lack of water switch.
Described immersion heat exchanger is preferably round copper pipe coiled structure.
The interior pipe of described bushing type contra-flow heat exchanger is preferably the brass pipe coil pipe formula, and outer tube is preferably the heat insulation PAP of pressure-bearing.
In sum, advantage of the present utility model and beneficial effect are:
1, realizes the full recuperation of heat of air-conditioning system and use the water that heats in the water storage incubator by the two-stage heat exchanger, the refrigeration efficiency ratio is up to C0P4.5, relative other air-conditioning UTILIZATION OF VESIDUAL HEAT IN water heater, can reach better refrigeration, Energy Efficiency Ratio improves more than 30%, for the energy-conservation contribution of also making a nearly step.
Can obviously not reduce leaving water temperature when 2, the water storage incubator discharges hot water and refills running water.
3, the water storage incubator adopts bearing structure, is furnished with air breathing district and storage area, when using hot water greatly flow discharge water and do not need to dispose in addition water pump, improved energy-conservationly, system is simple, practical and stablize.
4, utilize off-premises station air source heat pump conversion and control technology, make the single-cooling type domestic air conditioner when not opening refrigeration, also can use the cheap heat pump form of this water heater power consumption to heat water, and do not need to move indoor machine fan.
The utility model practicality height, each family of southern area of China and unit use air conditioner to tend to universalness at present.If each family all installs domestic air conditioning UTILIZATION OF VESIDUAL HEAT IN water heater of the present utility model, use air-conditioning to exempt from power consumption and use hot water, will be the technological revolution of a human settlements life.It is 18 to select to 22 and select intermittently water at night that general house person is had a bath, each water 30-60L, and use air conditioner refrigeration is to carry out continuously, one one split-type air conditioner machine (refrigerating capacity 2.5KW), per hour full heat utilization is heated to 55 degree heat production water 70-80 kilograms, freezed every day 4 hours, and disposed a volume 180L water storage incubator, the use of enough one 5 mouthfuls average family every days.The economic benefit aspect, by calculating with hot water 30KG for each person every day, the electricity charge are 0.8 yuan as using electric heater electricity consumption 1.04 to spend approximately; As use 0.237 cubic metre of combustion gas of gas heater, and about 0.3 yuan of expense, quite the quota of expenditure coal is 0.34 kilogram; All use the air-conditioning water heater using waste heat as 5,000 ten thousand people, will save energy and reduce the cost every year is equivalent to 6,200,000 tons of standard coals, surpasses 50,000,000,000 economic benefit, and social benefit and economic benefit are extremely remarkable.
The specific embodiment
Referring to Fig. 1; the full recuperation of heat water heater of domestic air conditioning of the present utility model is retrofitted on the normal domestic use split-type air conditioner off-premises station; domestic air-conditioning system generally is made up of indoor set 18 and off-premises station 19; indoor set 18 has evaporimeter 15; off-premises station 19 has compressor 1 and condenser 14; be provided with first capillary 17 between evaporimeter 15 and the condenser 14, the input of compressor 1 is provided with anti-low pressure and anti-frosting protection switch 2, and output is provided with anti-high pressure and lack of water switch 3.This water heater comprises the water storage incubator 8 with running water inlet 6 and hot water outlet 7, running water 6 places that enter the mouth are provided with pressure-reducing valve, be provided with the two-stage type heat exchanger that is connected in off-premises station 19 in this water storage incubator 8, first order heat exchanger is for being connected in the immersion coil heat exchanger 10 of compressor 1 output by HTHP blast pipe 4, second level heat exchanger is a bushing type contra-flow heat exchanger 9, this bushing type contra-flow heat exchanger 9 is made up of interior pipe 91 and outer tube 92, interior pipe 91 is the brass pipe coil pipe formula, and outer tube 92 is the heat insulation PAP of pressure-bearing.In pipe 91 inlet be connected with immersion coil heat exchanger 10, the outlet of interior pipe 91 by condensation after high normal pressure and temperature pipe 5 be connected with the input of condenser 14.The annular space of outer tube 92 has water inlet 921 that is connected in running water inlet 6 and the water filling port 922 that can open in water storage incubator 8.The 60-70 ℃ of high temperature and high pressure gaseous refrigerant that compressor 1 is discharged at first flows through immersion coil heat exchanger 10, and the water 20 in the water storage incubator 8 is heated to 55-60 ℃ and insulation, and the heat of this process exchange is about 15-20%; The interior pipe 91 of bushing type contra-flow heat exchanger 9 is connected with immersion coil heat exchanger 10, cold-producing medium flows through from interior pipe 91, running water then flows into from the running water inlet 6 of water storage incubator 8, flow into the annular space of outer tubes 92 from water inlet 921, and from the annular space of outer tube 92, flow through with opposite direction.After 10 heat exchange of immersion coil heat exchanger, in the surplus temperature of pipe in 91 be about 55-60 ℃ cold-producing medium and the temperature in the outer tube annular space and be about 15-25 ℃ running water countercurrent flow, heat up 30 ℃ in running water heat absorption back, water temperature is about 40-50 ℃ when arriving the water filling port 922 of outer tube annular space, cooling is 25 ℃ after the cold-producing medium heat release in the interior pipe 91, come out and flow into that the refrigerant temperature of high normal pressure and temperature pipe 5 is about 20-30 ℃ after the condensation from interior pipe 91, exchanging in the running water by bushing type contra-flow heat exchanger 9 more than 80% of heat that air conditioner refrigerating produces, thereby realized the utilization very of air-conditioning waste heat, solved the low technical barrier of other air-conditioning residue heat water heater heat energy utilization rate.
For fear of the leaving water temperature that when water storage incubator 8 puts hot water and refills running water, obviously reduces hot water outlet 7, between immersion coil heat exchanger 10 and bushing type contra-flow heat exchanger 9, water filling port 922 places that is to say the outer tube annular space have disposed a temperature control Flow-rate adjustment water valve 11, to control the flow that injects water according to the water temperature after the heating, the heating capacity of injected water volume and air conditioner is complementary, the water temperature of injecting water storage incubator 8 is controlled on the temperature of setting, when water storage incubator 8 puts hot water and refills running water, can obviously reduce the leaving water temperature of hot water outlet 7.The structure of temperature control choke valve and operation principle belong to this area comparatively mature technique and means, are not described in detail herein.When air-conditioning is closed, owing to adopted temperature control Flow-rate adjustment water valve 11, when the water temperature in the bushing type contra-flow heat exchanger 9 does not reach design temperature (for example 40 ℃), temperature control Flow-rate adjustment water valve 11 is a closed condition, so can be towards the hot water 20 in the cold water storage incubator 8, the leaving water temperature of hot water outlet 7 can not reduce, and has solved other air-conditioning residue heat water heater obsolete technical barrier of hot water when air-conditioning is not started shooting.
Water storage incubator 8 adopts bearing structure, air breathing district and storage area have been comprised in it, the hydraulic pressure that utilizes running water during entry is with 21 compressions of the air in the water storage incubator 8, running water flows into the storage area of reinjecting after bushing type contra-flow heat exchanger 9 heats by certain flow, and continues heating and insulation by immersion coil heat exchanger 10.When using hot water, because the pressure of water storage incubator 8 compressed airs 21, flow puts hot water and does not need to dispose in addition water pump greatly, has satisfied living needses such as shower, has improved energy-conservationly, and system is simple, practical and stablize.
Main line between the condenser 14 of bushing type contra-flow heat exchanger 9 and off-premises station 19 is provided with first bypass solenoid valve 12, is connected with first bypass 22 between the turnover two ends of first bypass solenoid valve 12, and this first bypass 22 is provided with second capillary 13; Be connected with second bypass 23 between the input of the input of first capillary 17 and compressor 1, this second bypass 23 is provided with second bypass solenoid valve 16.Such scheme changes the single-cooling type air conditioner into air source heat pump and heats water by magnetic valve, throttling and by-pass governing are installed, and forms air conditioner refrigerating, hot water dual-purpose unit, and exempt from power consumption with refrigeration and heat water summer, and drive heat pump and heat water winter.When winter, indoor set 18 did not use air conditioner refrigerating, air-conditioner outdoor unit 19 can adopt contrary Carnot cycle principle to heat, main line is closed in first bypass solenoid valve, 12 actions that are installed at off-premises station 19, bypass second capillary 13, change the condenser 14 of off-premises station 19 into evaporimeter, the low-temp low-pressure liquid refrigerant that flows through outdoor condenser 14 (as evaporimeter) this moment will become the normal temperature gaseous refrigerant by carburation by evaporation by the heat that absorbs in the surrounding air, open second bypass solenoid valve 16, directly be bypassed to compressor 1 without first capillary 17 and indoor set 18, the liquid refrigerant of boil down to HTHP, temperature can reach 75-85 ℃, deliver to the heat exchanger 10 in the water storage incubator 8 then, 9, the liquid refrigerant of HTHP is at heat exchanger 10, condensation heat release in 9, the efficient all recovery of heat this moment, this technological break-through has solved other air conditioner and water heater must open this difficult problem that dim gas just can heat water.