CN202521955U - Efficient and environment-friendly electrically-driven heat pump unit - Google Patents
Efficient and environment-friendly electrically-driven heat pump unit Download PDFInfo
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- CN202521955U CN202521955U CN2012201807419U CN201220180741U CN202521955U CN 202521955 U CN202521955 U CN 202521955U CN 2012201807419 U CN2012201807419 U CN 2012201807419U CN 201220180741 U CN201220180741 U CN 201220180741U CN 202521955 U CN202521955 U CN 202521955U
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Abstract
The utility model belongs to the field of water source heat pump equipment in air conditioning and process areas and particularly relates to an efficient and environment-friendly electrically-driven heat pump unit. The efficient and environment-friendly electrically-driven heat pump unit comprises a flash evaporation box, a first condenser, a water vapor compressor and a first expansion valve which are in pipeline connection; the flash evaporation box and a waste heat source are communicated with each other through a waste hot water inlet pipe and a waste hot water outlet pipe so as to form a circulation loop; the waste hot water inlet pipe extends into the flash evaporation box; a plurality of waste hot water nozzles are arranged on the extending section of the waste hot water inlet pipe in the axial direction; the flash evaporation box is sequentially communicated with a vacuum valve and a vacuum pump through a vapor pumping pipe; and the mounting heights of the waste hot water inlet pipe, the vapor pumping pipe and the waste hot water outlet pipe on the flash evaporation box sequentially decrease. The efficient and environment-friendly electrically-driven heat pump unit has the advantages of environmental friendliness and energy saving, no loss of temperature difference in heat transfer, high level of waste heat utilization, low requirements for water quality, high temperature rise, safety and reliability, and low cost.
Description
Technical field
The utility model belongs to the water resource heat pump apparatus field of air-conditioning and technology field, especially a kind of efficient and environment-friendly type driven type source pump.
Background technology
The water source heat pump units of main flow is to be the electric drive compression formula source pump of refrigerant with freon in the market, and its basic structure is as shown in Figure 2, comprises evaporimeter 10 that pipeline connects, compressor 11, second condenser 12, second expansion valve 13.The liquid freon refrigerant of lower pressure gasifies after in evaporimeter 10 cylindrical shells, absorbing in the copper pipe heat of the low temperature exhaust heat water that flows; The gaseous fluorine Leon is through compressor 11 compression back pressure and temperature rising and flow into second condenser 12; The gaseous fluorine Leon of elevated pressures emits at condenser that heat obtains air-conditioning or technology is used high-temperature-hot-water; Simultaneously, self become pressure, the higher liquid refrigerants of temperature, the second expansion valve 13 back pressure of flowing through of the liquid refrigerants under this state reduce, come back to evaporator evaporation; Go round and begin again, accomplish heating circulation.
This water source heat pump units technology maturation, be widely used,, need not to break through, can't break through to such an extent as to become a kind of certain technological process that heats.Still there is following significantly shortcoming in this kind of spring tide technology of facing world today's energy-saving and environmental protection:
1, not energy-conservation
Because the gasification latent heat of the freon refrigerant that adopts of water source heat pump units little (be equivalent to aqueous vapor latent heat 1/7th) in the market, the freon internal circulating load of producing identical caloric requirement is big; Condensing pressure and evaporating pressure are big, pressure reduction is big, and consumption of compressor is big, at present the COP value about 5 of water source heat pump units metric system thermal condition.
2, not environmental protection
Because water source heat pump units adopts freon such as R22, R134a, R407C to make refrigerant in the market; Greenhouse effects to the atmospheric ozone layer or the earth can cause negative effect; Do not meet environmental requirement, so can only be used for source pump as a kind of transition refrigerant yet.
3, intensification amplitude is not high
Owing to adopt the condensing pressure of freon refrigerant can not be too high, this just causes the condensation temperature can not be too high, thereby makes that the heat pump high temperature heat source can not be too high with respect to the intensification amplitude in low temperature exhaust heat source, generally is no more than 30 ℃, and absolute temperature is no more than 80 ℃.
4, high, the poor stability of cost
Owing to adopt evaporating pressure, the condensing pressure of freon refrigerant all to be higher than 1 atmospheric pressure, according to content regulation, some evaporimeters 10 and second condenser 12 are the designs of pressing force container standard, make, and cost is high, and safety requirements is high.
The utility model content
The technical problem that the utility model will solve is: for solve existing with freon be the electric drive compression formula source pump of refrigerant not energy-conservation, not environmental protection, the intensification amplitude is low, cost is high and technical problem of poor safety; It is a kind of safe that the utility model provides, the energy-saving high-efficiency environment-friendly type driven type source pump that cost is low.
The utility model solves the technical scheme that its technical problem adopted: a kind of efficient and environment-friendly type driven type source pump; Comprise shwoot case, first condenser, steam compression machine and first expansion valve that pipeline connects; The shwoot case is communicated with into closed circuit through the remaining hot water inlet tube with the remaining hot water outlet with the waste heat source; Stretch in the shwoot case in the remaining hot water inlet tube; The section of stretching axially is provided with a plurality of remaining hot water nozzles in the remaining hot water inlet tube, and the shwoot case is communicated with vacuum valve and vavuum pump successively through exhaust tube, and remaining hot water inlet tube, exhaust tube and the setting height(from bottom) of remaining hot water outlet on the shwoot case are successively decreased successively.
The shwoot case is a vacuum tank, and its effect is behind remaining hot water and steam condensation water decompression shwoot, to obtain heat.Under the steam compression machine normal operation in unit; Can keep sufficiently high vacuum in the shwoot case; After remaining hot water water inlet entering shwoot case passed through the remaining hot water nozzle, pressure sharply descended, produces shwoot, and part becomes steam; Sucked by steam compression machine, the remaining hot water that does not become steam is emitted heat, temperature drips in the shwoot case after descending; Coagulate after water gets into the shwoot case through first expansion valve from the high temperature of first condenser, pressure sharply descends, produces shwoot, and part becomes steam, is sucked by steam compression machine, and another part drips in the shwoot case after emitting heat, temperature decline.
Particularly, be communicated with into closed circuit through steam pipework with condensate line between the shwoot case and first condenser; Steam compression machine is installed in the steam pipework; First expansion valve is installed in the condensate line; Be communicated with water return line with fixed attention between steam pipework and the condensate line; Coagulate the entrance point of water return line and be located on the condensate line between first condenser and first expansion valve, coagulate the port of export of water return line and be located on the steam pipework between the steam compression machine and first condenser, from entrance point to its port of export that coagulates the water return line, be provided with condensate pump and control valve successively.
Coagulate water return line, condensate pump and the control valve of the utility model are referred to as steam condensation water gasification installation again; Part is coagulated water and is vaporized in steam compression machine exit again; Increase the throttle flow of first condenser when superheated steam is converted into saturated vapor, reached certain energy-saving effect.
First condenser of the utility model is shell-and-tube heat exchanger or plate type heat exchanger.Shell-and-tube heat exchanger has the high advantage of pressure-bearing property, and it is made up of cylindrical shell, heat-transfer pipe, gripper shoe, water pond, housing insulation etc.Plate type heat exchanger is energy-efficient, and good heat-transfer is unpicked and washed conveniently.In first condenser steam under elevated pressures the condensation heat release with heat exchanger tube in user's backwater heating, as hot user's high temperature heat source, steam self becomes steam condensation water and gets back to the shwoot case.
The steam compression machine of the utility model is roots blower compressor or Steam Compressor, and steam compression machine is the lifting means of a kind of steam temperature and pressure.When required high temperature heat source temperature is not too high, select the roots blower compressor usually for use; The roots blower compressor is called as quick oil-sealed rotary pump greatly because of its pumping speed, and is simple in structure, operates steadily, reliably, and mechanical efficiency is high, is convenient to care and maintenance; Insensitive to being transferred dust contained in the gas, drop and fiber; The working rotor surface need not be lubricated, and gas does not contact with oil, the gas of carrying pure.Higher even select Steam Compressor when surpassing 100 ℃ usually for use when required high temperature heat source temperature; The Steam Compressor flow is big, and rotating speed is high, compact conformation, and running is reliable and maintenance cost is low.
The utility model be a kind of be the efficient and environment-friendly type driven type source pump of cycle fluid with water, promptly be a kind of be cold-producing medium with water, utilize water shwoot in low pressure shwoot case to obtain waste heat source heat, the water-water heat pump unit that adopts steam compression machine to drive.
The greatest feature of the utility model is environmental protection and energy-conservation.It is working medium that source pump adopts water, utilizes the phase transformation of water to accomplish the heat absorption and the exothermic process of heat pump, and water is abundant as the working medium source, low price, environment is had no harm, thereby is environmental protection; The maximum energy consumption equipment of this unit is a steam compression machine, and the wasted work of steam compression machine is relevant with flow, specific volume and the compression ratio of compressed media.The medium of steam compression machine compression is a steam; The latent heat of vaporization of the water of unit mass is 7～8 times of conventional electronic water source heat pump units refrigerant; So the mass flow of same heating capacity medium is freon refrigerant source pump mass flow
steam as the disadvantage of medium is that its specific volume is bigger; But at (the waste heat source temperature is generally more than 30 ℃) under the working condition that heat pump heats thus the specific volume of the higher assurance of the evaporating pressure of steam steam is less, just can guarantee same heating capacity, compress the power much lower (hanging down about 50% usually) of the more conventional water source heat pump units of power of machine than raise steam under the situation of identical temperature of waste heat source.In addition; This unit is provided with steam condensation water gasification installation (being made up of condensing water conduit, condenser pump and control valve) again; Part water is with fixed attention vaporized in steam compression machine exit again, has increased the throttle flow of condenser when superheated steam is converted into saturated vapor, reaches certain energy-saving effect.
Another characteristic of the utility model efficient and environment-friendly type driven type source pump is to adopt the shwoot case to obtain low temperature exhaust heat.Obtain the mode of waste heat with respect to the employing of routine with heat exchanger, the waste heat taste that this mode do not have heat transfer temperature loss, utilized is higher, this kind mode help reducing refrigerant vapour specific volume, reduce the power consumption of steam compression machine; Simultaneously, owing to obtain waste heat without the heat exchanger mode, lower to the water quality requirement of remaining hot water, as long as doing general filtration, remaining hot water can advance the shwoot case, do not worry that the heat exchanger tube fouling causes the heating performance relaxation phenomenon.
The utility model efficient and environment-friendly type driven type source pump the 3rd characteristic is temperature rise.Because the refrigerant vapour of shwoot case is in vacuum state, absolute pressure is lower, thereby just can increase the high temperature heat source that condensing pressure obtains higher temperature as long as suitably increase the pressure head of steam compression machine.So under the kind mode, can obtain that lower temperature waste heat source is high more than 50 ℃, absolute temperature is higher than 100 ℃ high temperature heat source.
The utility model efficient and environment-friendly type driven type source pump the 4th characteristic is that cost is low, safe and reliable.Under common operating condition, this unit each several part is under the vacuum state, this product do not belong to pressure vessel, make require low, cost is low, safe and reliable; Simultaneously, this unit adopts water as working medium, abundant, cheap, the no refrigerant supplementary cost of originating; And since in traditional water source heat pump units freon refrigerant pressure higher, leakage arranged, need the regular replenishment refrigerant.
Comprehensively said, this product, is fit to various types of users and selects for use with the obvious advantage aspect energy-conserving and environment-protective, stable performance, intensification amplitude, cost and the security reliability with respect to the water source heat pump units of routine.
The utility model is to be the efficient and environment-friendly type driven type source pump of cycle fluid with water, and its course of work is following:
1) unit starting
Confirm shwoot case absolute pressure before the unit starting earlier; Can measure through MaLeod gauge equal vacuum instrument; If the absolute pressure of measured shwoot case is no more than at that time under the temperature steam-laden pressure 5Pa and the incoagulable gas amount then is described in the shwoot case seldom, unit can normally start; If the absolute pressure of measured shwoot case surpasses at that time the above 5Pa of steam-laden pressure under the temperature; Then explaining has more incoagulable gas (like air) to bleed in the shwoot case, open vacuum valve, open vacuum pump, and unit is vacuumized; Detect the absolute pressure of shwoot case simultaneously; When the absolute pressure of measured shwoot case is no more than at that time under the temperature the above 5Pa of steam-laden pressure, then to close vacuum valve, stop vavuum pump and vacuumize, unit can normally start.
During unit starting; The shwoot case has certain water gaging (height of water level account for whole shwoot case height about 1/3), opens the waste heat water pump; Open steam compression machine when the water of shwoot case is heated to design temperature, steam compression intensification, the back of boosting are got into first condenser; Refrigerant vapour condenses outside heat exchanger tube in first condenser; When water temperature is heated to design temperature in the heat exchanger tube, open high temperature heat source water pump, thermotropism user heat supply, abundant when steam condensation water, arriving has promptly with fixed attention behind the suitable height that water flows out from condensate line; The water that flows out flows to the shwoot case through first expansion valve; In case confirm can open condensate pump when the shwoot case has condensed water to flow to, regulate control valve simultaneously,, the saturation temperature under condenser inlet vapor (steam) temperature and the Water in Condenser steam pressure stops to regulate control valve when differing in 5 ℃, and unit runs to plateau gradually, reaches thermal balance and matter balance.
2) unit operation
Remaining hot water from certain temperature of waste heat source (this place gets 35 ℃) gets into the shwoot case through the remaining hot water inlet tube and through the remaining hot water nozzle; Shwoot becomes the steam of 31.8mmHg (temperature is 30 ℃) rapidly; Flash steam is sucked by steam compression machine; Do not splash into the shwoot case after the remaining hot water temperature of shwoot drops to 30 ℃, 30 ℃ remaining hot water is got back to the heating of waste heat source through the remaining hot water outlet; Flash steam is sucked the back compression by steam compression machine; Pressure and temperature raises, becomes pressure is that 172mmHg, temperature are 85 ℃ superheated steam, and this superheated steam mixes with the condensed water that comes self-regulating valve that to become pressure be that 172mmHg, temperature are 63 ℃ saturated steam; This saturated vapor is the condensation heat release in first condenser, and in the future 50 ℃ of hot water of self-heating user are heated to 60 ℃ and supply hot user again and use, and self temperature and pressure descends, becomes 61 ℃ steam condensation water and leaves first condenser simultaneously; Part steam condensation water is got back to shwoot case shwoot after through the first expansion valve step-down, and (it is that 30 ℃ steam is sucked by steam compression machine that the shwoot rear section becomes 31.8mmHg, temperature; The water that coagulates that partly becomes 30 ℃ splashes in the shwoot case); After another part steam condensation water boosts through condensate pump; Mix through the superheated steam of control valve, be vaporizated into saturated vapor, come back to first condenser with the outlet of steam compression machine.Go round and begin again, accomplish heating circulation.
The beneficial effect of the utility model is:
1, environmental protection and energy-conservation: it is working medium that source pump adopts water, utilizes the phase transformation of water to accomplish the heat absorption and the exothermic process of heat pump, and water is abundant as the working medium source, low price, environment is had no harm.
2, no heat transfer temperature loss, the waste heat taste height and the water quality requirement that are utilized are low: the mode of obtaining waste heat with respect to the employing of routine with heat exchanger; The waste heat taste that this mode do not have heat transfer temperature loss, utilized is higher, this kind mode help reducing refrigerant vapour specific volume, reduce the power consumption of steam compression machine; Simultaneously, owing to obtain waste heat without the heat exchanger mode, lower to the water quality requirement of remaining hot water, as long as doing general filtration, remaining hot water can advance the shwoot case, do not worry that the heat exchanger tube fouling causes the heating performance relaxation phenomenon.
3, temperature rise: under vacuum state, can obtain that lower temperature waste heat source is high more than 50 ℃, absolute temperature is higher than 100 ℃ high temperature heat source as long as suitably increase the pressure head of steam compression machine.
4, safe and reliable and cost is low: under common operating condition, this unit each several part is under the vacuum state, this product do not belong to pressure vessel, make require low, cost is low, safe and reliable; Simultaneously, this unit adopts water as working medium, abundant, cheap, the no refrigerant supplementary cost of originating; And since in traditional water source heat pump units freon refrigerant pressure higher, leakage arranged, need the regular replenishment refrigerant.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the structural representation of the optimum embodiment of efficient and environment-friendly type driven type source pump of the utility model;
Fig. 2 be existing be the structural representation of the electric drive compression formula water source heat pump units of refrigerant with freon.
Among the figure: 1, shwoot case, 1-1, remaining hot water inlet tube, 1-2, remaining hot water outlet, 1-3, exhaust tube, 1-4, remaining hot water nozzle; 2, first condenser, 3, steam compression machine, 4, first expansion valve, 5, vacuum valve, 6, vavuum pump; 7, steam pipework, 8, condensate line, 9, coagulate water return line, 9-1, condensate pump, 9-2, control valve; 10, evaporimeter, 11, compressor, 12, second condenser, 13, second expansion valve.
The specific embodiment
Combine accompanying drawing that the utility model is done further detailed explanation now.These accompanying drawings are the sketch map of simplification, the basic structure of the utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
The optimum embodiment of the efficient and environment-friendly type driven type source pump of the utility model as shown in Figure 1; It comprises shwoot case that pipeline connects 1, first condenser 2, steam compression machine 3 and first expansion valve 4; Shwoot case 1 is communicated with into closed circuit through remaining hot water inlet tube 1-1 with remaining hot water outlet 1-2 with the waste heat source; Stretch in shwoot case 1 in the remaining hot water inlet tube 1-1; The section of stretching axially is provided with a plurality of remaining hot water nozzle 1-4 in the remaining hot water inlet tube 1-1, and shwoot case 1 is communicated with vacuum valve 5 and vavuum pump 6 successively through exhaust tube 1-3, and remaining hot water inlet tube 1-1, exhaust tube 1-3 and the setting height(from bottom) of remaining hot water outlet 1-2 on shwoot case 1 are successively decreased successively.
Shwoot case 1 is a vacuum tank, and its effect is behind remaining hot water and steam condensation water decompression shwoot, to obtain heat.Under steam compression machine 3 normal operation in unit; Can keep sufficiently high vacuum in the shwoot case 1; After remaining hot water water inlet entering shwoot case 1 passed through remaining hot water nozzle 1-4, pressure sharply descended, produces shwoot, and part becomes steam; Sucked by steam compression machine 3, the remaining hot water that does not become steam is emitted heat, temperature drips in the shwoot case 1 after descending; Coagulate after water gets into shwoot casees 1 through first expansion valve 4 from the high temperature of first condenser 2, pressure sharply descends, produces shwoot, and part becomes steam, is sucked by steam compression machine 3, and another part drips in the shwoot case 1 after emitting heat, temperature decline.
Particularly, be communicated with into closed circuit through steam pipework 7 with condensate line 8 between the shwoot case 1 and first condenser 2; Steam compression machine 3 is installed in the steam pipework 7; First expansion valve 4 is installed in the condensate line 8; Be communicated with water return line 9 with fixed attention between steam pipework 7 and the condensate line 8; Coagulating the entrance point of water return line 9 is located on the condensate line 8 between first condenser 2 and first expansion valve 4; Coagulate the port of export of water return line 9 and be located on the steam pipework 7 between the steam compression machine 3 and first condenser 2, from entrance point to its port of export that coagulates water return line 9, be provided with condensate pump 9-1 and control valve 9-2 successively.
Water return line 9, condensate pump 9-1 and the control valve 9-2 with fixed attention of present embodiment are steam condensation water gasification installation again; Part is coagulated water and is vaporized in steam compression machine 3 exits again; Increase the throttle flow of first condenser 2 when superheated steam is converted into saturated vapor, reached certain energy-saving effect.
First condenser 2 of present embodiment is a shell-and-tube heat exchanger, has the high advantage of pressure-bearing property, and it is made up of cylindrical shell, heat-transfer pipe, gripper shoe, water pond, housing insulation etc.In first condenser 2 steam under elevated pressures the condensation heat release with heat exchanger tube in user's backwater heating, as hot user's high temperature heat source, steam self becomes steam condensation water and gets back to shwoot case 1.
The steam of present embodiment compression machine 3 be a Steam Compressor, and Steam Compressor is applicable to the higher even unit during above 100 ℃ of high temperature heat source temperature.
The utility model is to be the efficient and environment-friendly type driven type source pump of cycle fluid with water, and its course of work is following:
1) unit starting
Confirm shwoot case 1 absolute pressure before the unit starting earlier; Can measure through MaLeod gauge equal vacuum instrument; If the absolute pressure of measured shwoot case 1 is no more than at that time under the temperature steam-laden pressure 5Pa and the incoagulable gas amount then is described in the shwoot case 1 seldom, unit can normally start; If the absolute pressure of measured shwoot case 1 surpasses at that time the above 5Pa of steam-laden pressure under the temperature; Then explaining has more incoagulable gas (like air) to bleed in the shwoot case 1, open vacuum valve 5, open vacuum pump 6, and unit is vacuumized; Detect the absolute pressure of shwoot case 1 simultaneously; When the absolute pressure of measured shwoot case 1 is no more than at that time under the temperature the above 5Pa of steam-laden pressure, then to close vacuum valve 5, stop vavuum pump 6 and vacuumize, unit can normally start.
During unit starting; Shwoot case 1 has certain water gaging (height of water level account for whole shwoot case 1 height about 1/3), opens the waste heat water pump; Open steam compression machine 3 when the water of shwoot case 1 is heated to design temperature, steam compression intensification, the back of boosting are got into first condenser 2; Refrigerant vapour condenses outside heat exchanger tube in first condenser 2; When water temperature is heated to design temperature in the heat exchanger tube, open high temperature heat source water pump, thermotropism user heat supply, abundant when steam condensation water, arriving has promptly with fixed attention behind the suitable height that water flows out from condensate line 8; The water that flows out flows to shwoot case 1 through first expansion valve 4; In case confirm can open condensate pump 9-1 when shwoot case 1 has condensed water to flow to, regulate control valve 9-2 simultaneously,, the saturation temperature under condenser inlet vapor (steam) temperature and the Water in Condenser steam pressure stops to regulate control valve 9-2 when differing in 5 ℃, and unit runs to plateau gradually, reaches thermal balance and matter balance.
2) unit operation
Remaining hot water from certain temperature of waste heat source (getting 35 ℃ here) gets into shwoot case 1 through remaining hot water inlet tube 1-1 and through remaining hot water nozzle 1-4; Shwoot becomes the steam of 31.8mmHg (temperature is 30 ℃) rapidly; Flash steam is sucked by steam compression machine 3; The remaining hot water temperature of shwoot does not drop to the remaining hot water that splashes into 1,30 ℃ in shwoot case after 30 ℃ and gets back to the heating of waste heat source through remaining hot water outlet 1-2; Flash steam is sucked the back compression by steam compression machine 3; Pressure and temperature raises, becomes pressure is that 172mmHg, temperature are 85 ℃ superheated steam, and this superheated steam mixes with the condensed water that comes self-regulating valve 9-2 that to become pressure be that 172mmHg, temperature are 63 ℃ saturated steam; The condensation heat release in first condenser 2 of this saturated vapor, in the future 50 ℃ of hot water of self-heating user are heated to 60 ℃ and supply hot user again and use, and self temperature and pressure descends, becomes 61 ℃ steam condensation water and leaves first condenser 2 simultaneously; Part steam condensation water is got back to shwoot case 1 shwoot after through 4 step-downs of first expansion valve, and (it is that 30 ℃ steam is sucked by steam compression machine 3 that the shwoot rear section becomes 31.8mmHg, temperature; The water that coagulates that partly becomes 30 ℃ splashes in the shwoot case 1); After another part steam condensation water boosts through condensate pump 9-1; Mix with the superheated steam of steam compression machine 3 outlets through control valve 9-2, be vaporizated into saturated vapor, come back to first condenser 2.Go round and begin again, accomplish heating circulation.
Present embodiment be a kind of be the efficient and environment-friendly type driven type source pump of cycle fluid with water, promptly be a kind of be cold-producing medium with water, utilize water shwoot in low pressure shwoot case 1 to obtain waste heat source heat, the water-water heat pump unit that adopts steam compression machine to drive.
The greatest feature of present embodiment is environmental protection and energy-conservation.It is working medium that source pump adopts water, utilizes the phase transformation of water to accomplish the heat absorption and the exothermic process of heat pump, and water is abundant as the working medium source, low price, environment is had no harm, thereby is environmental protection; The maximum energy consumption equipment of this unit is a steam compression machine 3, and the wasted work of steam compression machine 3 is relevant with flow, specific volume and the compression ratio of compressed media.The medium of steam compression machine 3 compressions is a steam; The latent heat of vaporization of the water of unit mass is 7～8 times of conventional electronic water source heat pump units refrigerant; So the mass flow of same heating capacity medium is freon refrigerant source pump mass flow
steam as the disadvantage of medium is that its specific volume is bigger; But at (the waste heat source temperature is generally more than 30 ℃) under the working condition that heat pump heats thus the specific volume of the higher assurance of the evaporating pressure of steam steam is less, just can guarantee same heating capacity, compress the power much lower (hanging down about 50% usually) of the more conventional water source heat pump units of power of machine 3 than raise steam under the situation of identical temperature of waste heat source.In addition; This unit is provided with steam condensation water gasification installation (being made up of condensing water conduit 9, condenser pump 9-1 and control valve 9-2) again; Part is coagulated water and is vaporized in steam compression machine 3 exits again; Increase the throttle flow of first condenser 2 when superheated steam is converted into saturated vapor, reached certain energy-saving effect.
Another characteristic of the utility model efficient and environment-friendly type driven type source pump is to adopt shwoot case 1 to obtain low temperature exhaust heat.Obtain the mode of waste heat with respect to the employing of routine with heat exchanger, the waste heat taste that this mode do not have heat transfer temperature loss, utilized is higher, this kind mode help reducing refrigerant vapour specific volume, reduce the power consumption of steam compression machine; Simultaneously, owing to obtain waste heat without the heat exchanger mode, lower to the water quality requirement of remaining hot water, as long as doing general filtration, remaining hot water can advance shwoot case 1, do not worry that the heat exchanger tube fouling of heat exchanger causes the heating performance relaxation phenomenon.
The utility model efficient and environment-friendly type driven type source pump the 3rd characteristic is temperature rise.Because the refrigerant vapour of shwoot case 1 is in vacuum state, absolute pressure is lower, thereby just can increase the high temperature heat source that condensing pressure obtains higher temperature as long as suitably increase the pressure head of steam compression machine 3.So under the kind mode, can obtain that lower temperature waste heat source is high more than 50 ℃, absolute temperature is higher than 100 ℃ high temperature heat source.
The utility model efficient and environment-friendly type driven type source pump the 4th characteristic is that cost is low, safe and reliable.Under common operating condition, this unit each several part is under the vacuum state, this product do not belong to pressure vessel, make require low, cost is low, safe and reliable; Simultaneously, this unit adopts water as working medium, abundant, cheap, the no refrigerant supplementary cost of originating; And since in traditional water source heat pump units freon refrigerant pressure higher, leakage arranged, need the regular replenishment refrigerant.
Comprehensively said, this product, is fit to various types of users and selects for use with the obvious advantage aspect energy-conserving and environment-protective, stable performance, intensification amplitude, cost and the security reliability with respect to the water source heat pump units of routine.
With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (4)
1. efficient and environment-friendly type driven type source pump; It is characterized in that: comprise shwoot case (1), first condenser (2), steam compression machine (3) and first expansion valve (4) that pipeline connects; Shwoot case (1) is communicated with into closed circuit through remaining hot water inlet tube (1-1) with remaining hot water outlet (1-2) with the waste heat source; Stretch in shwoot case (1) in the said remaining hot water inlet tube (1-1); The section of stretching axially is provided with a plurality of remaining hot water nozzles (1-4) in the remaining hot water inlet tube (1-1); Shwoot case (1) is communicated with vacuum valve (5) and vavuum pump (6) successively through exhaust tube (1-3), and remaining hot water inlet tube (1-1), exhaust tube (1-3) and the setting height(from bottom) of remaining hot water outlet (1-2) on shwoot case (1) are successively decreased successively.
2. efficient and environment-friendly type driven type source pump as claimed in claim 1 is characterized in that: be communicated with into closed circuit through steam pipework (7) with condensate line (8) between said shwoot case (1) and first condenser (2); Said steam compression machine (3) is installed in the steam pipework (7); Said first expansion valve (4) is installed in the condensate line (8); Be communicated with water return line (9) with fixed attention between steam pipework (7) and the condensate line (8); Coagulating the entrance point of water return line (9) is located on the condensate line (8) between first condenser (2) and first expansion valve (4); Coagulate the port of export of water return line (9) and be located on the steam pipework (7) between steam compression machine (3) and first condenser (2), from entrance point to its port of export that coagulates water return line (9), be provided with condensate pump (9-1) and control valve (9-2) successively.
3. efficient and environment-friendly type driven type source pump as claimed in claim 1 is characterized in that: said first condenser (2) is shell-and-tube heat exchanger or plate type heat exchanger.
4. efficient and environment-friendly type driven type source pump as claimed in claim 1 is characterized in that: said steam compression machine (3) is roots blower compressor or Steam Compressor.
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| CN2012201807419U CN202521955U (en) | 2012-04-25 | 2012-04-25 | Efficient and environment-friendly electrically-driven heat pump unit |
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| CN2012201807419U CN202521955U (en) | 2012-04-25 | 2012-04-25 | Efficient and environment-friendly electrically-driven heat pump unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439766A (en) * | 2016-09-30 | 2017-02-22 | 中能服能源科技股份有限公司 | Steam production device and direct compression type heat pump system |
-
2012
- 2012-04-25 CN CN2012201807419U patent/CN202521955U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439766A (en) * | 2016-09-30 | 2017-02-22 | 中能服能源科技股份有限公司 | Steam production device and direct compression type heat pump system |
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Granted publication date: 20121107 Termination date: 20180425 |