CN202734338U - High-temperature heat pump - Google Patents
High-temperature heat pump Download PDFInfo
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- CN202734338U CN202734338U CN 201220329613 CN201220329613U CN202734338U CN 202734338 U CN202734338 U CN 202734338U CN 201220329613 CN201220329613 CN 201220329613 CN 201220329613 U CN201220329613 U CN 201220329613U CN 202734338 U CN202734338 U CN 202734338U
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Abstract
The utility model relates to the field of thermal energy and power engineering, in particular to a high-temperature heat pump which can condense a working medium to a lower temperature before entering an expansion valve and increases the energy efficiency ratio and the working stability. The high-temperature heat pump comprises a compressor, a condensing system, the expansion valve and an evaporator, wherein the condensing system comprises a first condenser, a second condenser and a third condenser. The working medium flows out from the compressor and sequentially flows through the first condenser, the second condenser, the third condenser, the expansion valve and the evaporator to return into the compressor, forming the flowing path of the working medium, wherein a flowing path of a first heat-carrying medium opposite to the flowing direction of the working medium is respectively arranged in the first condenser and the second condenser, and the first heat-carrying medium flows through the first condenser through the second condenser; and a flowing path of a second heat-carrying medium opposite to the flowing direction of the working medium is arranged in the third condenser.
Description
Technical field
The utility model relates to Thermal Power Engineering Field, is specifically related to a kind of high temperature heat pump.
Background technology
Heat pump absorbs heat from environment by working medium, and to the heating of heat-carrying agent (for example water) heat release realization to heat-carrying agent.Heat pump can be divided into normal temperature heat pump and high temperature heat pump according to the temperature of the heat-carrying agent that obtains after heating, the temperature of the heat-carrying agent that high temperature heat pump makes is higher than the normal temperature heat pump.
Existing graded condensation type heat pump is a kind of preferably high temperature heat pump, usually can improve the output temperature of heat-carrying agent, the high-temperature-hot-water of 90 ℃ of outputs for example, even can the output water vapour.In existing graded condensation type heat pump, condenser comprises a plurality of heat exchangers that are cascaded, flow through successively the working medium of a plurality of heat exchangers to oppositely flowing through successively the heat-carrying agent heat release of heat exchanger, the heat-carrying agent classification heats up in working medium classification cooling, and heat-carrying agent is being heated to maximum temperature near in the heat exchanger at exhaust outlet of compressor place.
The latent heat that existing graded condensation type heat pump utilizes high-pressure gaseous working medium to discharge when gaseous state condenses to liquid state tentatively heats heat-carrying agent, and the sensible heat that utilizes high-pressure gaseous working medium to discharge further improves the output temperature of heat-carrying agent.Elected decide the pressure at expulsion of compressor after, the sensible heat that high-pressure working medium discharges determines with the ratio of latent heat, if the input quantity of heat-carrying agent is larger at this moment, output temperature is also lower, just can effectively utilize this two parts heat; But in application, often need to obtain having the heat-carrying agent of higher output temperature, at this moment just need to reduce the input quantity of heat-carrying agent.And the input quantity that reduces heat-carrying agent can cause heat-carrying agent can not absorb the latent heat that working medium discharges fully, working medium can occur and before entering expansion valve, can't lose the residue latent heat that carries, make working medium before entering expansion valve, can't be condensed to lower temperature, to such an extent as to can't from evaporimeter, absorb more heat, cause Energy Efficiency Ratio to reduce (Energy Efficiency Ratio of heat pump refers to that heat pump discharges the ratio of the electric energy that consumes to the heat of heat-carrying agent and compressor), even so that heat pump can not steady operation.
The utility model content
The utility model provides a kind of high temperature heat pump, can make working medium be condensed to lower temperature before entering expansion valve, can adjust intake air temperature and the pressure of compressor, makes heat pump have higher Energy Efficiency Ratio.
The utility model provides a kind of high temperature heat pump, comprising:
Compressor, condenser system, expansion valve, evaporimeter;
Described condenser system comprises the first condenser, the second condenser, the 3rd condenser, working medium flows out from described compressor, after flowing through successively described the first condenser, described the second condenser, described the 3rd condenser, described expansion valve, described evaporimeter, get back in the described compressor, form the flow passage of described working medium;
Wherein, described the first condenser and described the second condenser inside are respectively equipped with the flow passage of first heat-carrying agent opposite with the flow direction of described working medium, and described the first heat-carrying agent flows through described the first condenser through behind described the second condenser;
Wherein, described the 3rd condenser inside is provided with the flow passage of second heat-carrying agent opposite with the flow direction of described working medium.
High temperature heat pump by each embodiment of the present utility model provides, can bring following beneficial effect:
Can make working medium before entering expansion valve, be condensed to lower temperature, improve Energy Efficiency Ratio, and improve the job stability of heat pump.In the first condenser and the second condenser, working medium still because the flow of the first heat-carrying agent is fixed, can't be reduced to predetermined temperature with the temperature of working medium with most of heat transferred the first heat-carrying agent; In the 3rd condenser, working medium is again with remaining a part of heat transferred the second heat-carrying agent, so that the working medium that flows out can be condensed to lower temperature before entering expansion valve, and can from evaporimeter, absorb more heat from the 3rd condenser, thereby improve Energy Efficiency Ratio.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will do simple the introduction to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in below describing only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawing illustrated embodiments other embodiment and accompanying drawing thereof.
Fig. 1 is the pressure-enthalpy chart of a kind of embodiment of high temperature heat pump of the present utility model;
Fig. 2 is the schematic diagram of the embodiment one of high temperature heat pump of the present utility model;
Fig. 3 is the schematic diagram of the embodiment two of high temperature heat pump of the present utility model;
Fig. 4 is the schematic diagram of the embodiment three of high temperature heat pump of the present utility model;
Wherein, 101 is compressor, and 102 is the first condenser, 103 is the second condenser, and 104 is the 3rd condenser, and 105 is expansion valve, 106 is evaporimeter, and 107 is regenerator, and 108 is the first pressure-regulating valve, 109 is flow control valve, 110 is check valve, and 111 is booster, and 112 is storage facility, 113 is the combination valve of choke valve, pressure limiting valve and differential valve, and 114 is the second pressure-regulating valve.
The specific embodiment
Below with reference to accompanying drawing the technical scheme of each embodiment of the utility model is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the utility model is protected.
The utility model provides a kind of high temperature heat pump, comprising:
Compressor, condenser system, expansion valve, evaporimeter; Described condenser system comprises the first condenser, the second condenser, the 3rd condenser, working medium flows out from described compressor, after flowing through successively described the first condenser, described the second condenser, described the 3rd condenser, described expansion valve, described evaporimeter, get back in the described compressor, form the flow passage of described working medium; Wherein, described the first condenser and described the second condenser inside are respectively equipped with the flow passage of first heat-carrying agent opposite with the flow direction of described working medium, and described the first heat-carrying agent flows through described the first condenser through behind described the second condenser; Wherein, described the 3rd condenser inside is provided with the flow passage of second heat-carrying agent opposite with the flow direction of described working medium.
In an embodiment of the present utility model, high temperature heat pump comprises compressor, the first condenser, the second condenser, the 3rd condenser, expansion valve and the evaporimeter that circulation connects.After working medium flows out from compressor, flow through successively the first condenser, the second condenser, the 3rd condenser, expansion valve and evaporimeter, and release heat in the first condenser, the second condenser, the 3rd condenser respectively, in evaporimeter, absorb heat, flow back to again compressor, consisted of the closed circuit of working medium.Preferably, working medium can be used working medium of the prior art, for example R22 or R134a.Be respectively equipped with the flow passage of heat-carrying agent in the first condenser, the second condenser, the 3rd condenser.The flow passage of the heat-carrying agent in the first condenser and the second condenser is connected, and this flow passage is the flow passage of the first heat-carrying agent.The first heat-carrying agent flows out follow-up afterflow from the second condenser crosses the first condenser.The flow passage of the heat-carrying agent in the 3rd condenser is the flow passage of the second heat-carrying agent.Preferably, the first heat-carrying agent and the second heat-carrying agent can be the same medium, for example are water.Like this, working medium will be absorbed by the second heat-carrying agent in the 3rd condenser flowing through the part heat that still carries behind the first condenser, the second condenser, make working medium just can reach low temperature before entering expansion valve.
In an embodiment of the present utility model, the flow direction of the first heat-carrying agent in the first condenser, the second condenser is opposite with the flow direction of working medium, so that the first heat-carrying agent absorbs the heat that working medium is carried, and when flowing out, the first heat-carrying agent can reach higher temperature from the first condenser.The flow direction of the second heat-carrying agent in the 3rd condenser is opposite with the flow direction of working medium, so that the second heat-carrying agent absorbs the heat that working medium is carried.
In an embodiment of the present utility model, also further be provided with regenerator in the high temperature heat pump, the flow passage that two working medium are arranged in the regenerator, by just thermal release being given the working medium of absorbing heat in the working medium of heat release, when the working medium before entering expansion valve is fully lowered the temperature, improve Energy Efficiency Ratio.Preferably, a flow passage of the working medium in the regenerator is: working medium flows into the 3rd condenser through regenerator after flowing out from the second condenser; Another of working medium flow passage is: working medium flows into compressor through regenerator after flowing out from evaporimeter; Wherein, in two flow passages, the flow direction of working medium is opposite.
In an embodiment of the present utility model, the first condenser can use heat exchanger, and preferably, a plurality of heat exchangers that can use a heat exchanger or mutually connect also can use a plurality of heat exchangers parallel with one another.
In an embodiment of the present utility model, the second condenser can use heat exchanger, and preferably, a plurality of heat exchangers that can use a heat exchanger or mutually connect also can use a plurality of heat exchangers parallel with one another.
In an embodiment of the present utility model, the 3rd condenser can use heat exchanger, and preferably, a plurality of heat exchangers that can use a heat exchanger or mutually connect also can use a plurality of heat exchangers parallel with one another.
In an embodiment of the present utility model, regenerator can use heat exchanger, and preferably, a plurality of heat exchangers that can use a heat exchanger or mutually connect also can use a plurality of heat exchangers parallel with one another.
In an embodiment of the present utility model, heat exchanger uses the heat exchanger of the thermotube shell with single interior space, and heat transfer effect is better.Can be arranged on the top of thermotube shell for the second pipe of thermal-arrest media flow with supplying the first mobile install pipeline of heat eliminating medium in the bottom of thermotube shell, the liquid phase heat transfer medium is positioned at the liquid level of the first pipeline submergence and heat transfer medium in the second pipe below.For example, in the first condenser and the second condenser, working medium is heat eliminating medium, and the first heat-carrying agent is the thermal-arrest medium.In the 3rd condenser, working medium is heat eliminating medium, and the second heat-carrying agent is the thermal-arrest medium.In regenerator, the working medium that flows out from the second condenser is heat eliminating medium, and the working medium that flows out from evaporimeter is the thermal-arrest medium.
In an embodiment of the present utility model, one or more flow control valves that arrange in the first condenser, the second condenser, the 3rd condenser, the regenerator, control to adjust exchange heat speed and the exchange heat effect of working medium and the first heat-carrying agent by the flow of controlled medium, the first heat-carrying agent, the second heat-carrying agent, exchange heat speed and the exchange heat effect of control and regulation working medium and the second heat-carrying agent.
In each embodiment of the present utility model, preferably, described high temperature heat pump further comprises with lower at least a: choke valve, it is connected between described the second condenser and described the 3rd condenser, is lower than the pressure of working medium in described the second condenser for the pressure that makes described the 3rd condenser working medium;
Pressure limiting valve, it is connected between described the second condenser and described the 3rd condenser, is used for controlling described working medium at the pressure of described the first condenser and the second condenser, makes it be lower than predetermined value;
Differential valve, it is connected between described the second condenser and described the 3rd condenser, is used for making the pressure differential between described the second condenser and described the 3rd condenser be lower than predetermined value;
The first pressure-regulating valve, it is connected between described evaporimeter and the described compressor, is used for regulating the pressure of the described working medium that enters described compressor;
Pressure charging system, it comprises in parallel booster and check valve, described pressure charging system is connected between described evaporimeter and the described compressor, flow through described booster from the working medium of described evaporimeter outflow after, enter described compressor; Wherein, described booster is connected with the sender property outlet of described the first condenser and the working medium entrance of described the 3rd condenser respectively, the part working medium that flows out from described the first condenser flows through the working medium entrance that flows into described the 3rd condenser behind the described booster, and the part working medium that described the first condenser flows out drives described booster the working medium that flows out from described evaporimeter is carried out supercharging; When described booster did not start, the working medium that flows out from described evaporimeter entered described compressor through described check valve;
The second pressure-regulating valve, it is connected between the working medium import of the sender property outlet of described the first condenser and described compressor, and the described working medium of part that flows out from the sender property outlet of described the first condenser flows into described compressor behind described the second pressure-regulating valve.
In an embodiment of the present utility model, storage facility is used for the redundant working medium of buffering Working fluid flow path, and is unimpeded with the flow passage that guarantees working medium.Preferably, storage facility is arranged between the 3rd condenser and the expansion valve.
In an embodiment of the present utility model, in the flow passage of working medium pressure sensor is set, whether the pressure size and the power pressure that can be used for detecting working medium be stable, thereby can regulate accordingly flow and the flow velocity of working medium, so that the pressure of working medium keeps stable.
In an embodiment of the present utility model, in the flow passage of the first heat-carrying agent pressure sensor is set, whether the pressure that can be used for detecting the pressure size of the first heat-carrying agent and the first heat-carrying agent is stable, thereby can regulate accordingly flow and the flow velocity of the first heat-carrying agent, so that the pressure of the first heat-carrying agent keeps stable.
In an embodiment of the present utility model, in the flow passage of the second heat-carrying agent pressure sensor is set, whether the pressure that can be used for detecting the pressure size of the second heat-carrying agent and the second heat-carrying agent is stable, thereby can regulate accordingly flow and the flow velocity of the second heat-carrying agent, so that the pressure of the second heat-carrying agent keeps stable.
In an embodiment of the present utility model, set temperature sensor in the flow passage of working medium, whether the temperature that can be used for detecting working medium has reached requirement, thereby can regulate accordingly flow and the flow velocity of working medium and/or the first heat-carrying agent, or flow and the flow velocity of adjusting working medium and/or the second heat-carrying agent, with the temperature of controlled medium.
In an embodiment of the present utility model, set temperature sensor in the flow passage of the first heat-carrying agent, whether the temperature that can be used for detecting the first heat-carrying agent has reached demand, thereby can regulate accordingly flow and the flow velocity of working medium and/or the first heat-carrying agent, to control the temperature of the first heat-carrying agent.
In an embodiment of the present utility model, set temperature sensor in the flow passage of the second heat-carrying agent, whether the temperature that can be used for detecting the second heat-carrying agent has reached demand, thereby can regulate accordingly flow and the flow velocity of working medium and/or the second heat-carrying agent, to monitor the temperature of the second heat-carrying agent, for the control heat pump provides the basis.
In an embodiment of the present utility model, in described the first condenser, use a plurality of heat exchangers, can make the higher high pressure superheater working medium of temperature in one or more heat exchangers the first higher heat-carrying agent of heat transferred temperature, the lower high pressure superheater working medium of temperature in one or more heat exchangers the first lower heat-carrying agent of heat transferred temperature, make the first heat-carrying agent have higher output temperature, in Fig. 2, Fig. 3, embodiment of the present utility model shown in Figure 4, the first condenser has all used a plurality of heat exchangers, for example is 3 heat exchangers.
In an embodiment of the present utility model, in described the second condenser, use a plurality of heat exchangers, the first heat-carrying agent is heated gradually, make the temperature of the first heat-carrying agent before entering described the first condenser close to the condensation temperature of high-pressure working medium, so that heat transfer effect is better, the cooling effect of high-pressure working medium is better.In Fig. 2, Fig. 3, embodiment of the present utility model shown in Figure 4, the second condenser has all used a plurality of heat exchangers, for example is 3 heat exchangers.
In an embodiment of the present utility model, in described the 3rd condenser, use a plurality of heat exchangers, high-pressure working medium is cooled gradually, thereby meets the requirements of degree of supercooling.In Fig. 2, Fig. 3, embodiment of the present utility model shown in Figure 4, the 3rd condenser has all used a plurality of, for example 3 heat exchangers.
In an embodiment of the present utility model, in described regenerator, use a plurality of heat exchangers, can make from evaporimeter and/or booster low pressure working fluid out to be heated gradually, make low pressure working fluid enter superheat state.In Fig. 2, Fig. 3, Fig. 4 regenerator all used a plurality of, 3 heat exchangers for example.Control valve 109 is connected with heat exchanger, and can regulate the flow of heat exchanger mesolow working medium and/or flow through distance, thus the degree of superheat of control low pressure working fluid.
In an embodiment of the present utility model, pressure sensor can be connected to the compressor outlet place, pressure for detection of high-pressure working medium, whether the outlet pressure that constantly detects compressor meets the requirements of pressure at expulsion, preferentially, when the pressure of high-pressure working medium surpasses the permissible value of compressor, described high temperature heat pump out of service;
In an embodiment of the present utility model, with reference to Fig. 3, temperature sensor can be connected to the exit of the first heat-carrying agent of the first condensation 102, temperature for detection of the first heat-carrying agent, when the temperature of the first heat-carrying agent is below or above when needing temperature, can reduce or increase the flow of the first heat-carrying agent, make the temperature stabilization of the first heat-carrying agent in the temperature of needs; Temperature sensor also can connect the exit of compressor 101, delivery temperature for detection of compressor, when delivery temperature is higher or lower than selected temperature, can regulate the control valve 109 in the regenerator 107, delivery temperature is stabilized in requires temperature, preferentially, when delivery temperature surpasses the permissible value of compressor 101, described high temperature heat pump out of service; Temperature sensor also can be connected to the high-pressure working medium exit of the 3rd condenser 104, temperature for detection of high-pressure working medium, to determine whether high-pressure working medium has reached the degree of supercooling that requires, described degree of supercooling is that condensation temperature and the high-pressure working medium of high-pressure working medium enters expansion valve 105 temperature difference before, when degree of supercooling is less than or greater than required value, can increase or reduce the flow of the second heat-carrying agent, degree of supercooling is met the demands.
In an embodiment of the present utility model, with reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, from 2 ' point to a point, the gaseous working medium temperature reduces, discharge sensible heat, from a o'clock to 3 ' point, working medium discharges latent heat from temperature-resistant to reduction in temperature-resistant process, in the process that temperature reduces (occurring cold), discharge again sensible heat.From 3 ' o'clock to 4 ' point, working medium is through expansion valve, volume has swollen, heat absorption does not have heat release yet, so enthalpy is constant, but some working medium has become gas by liquid, so temperature has reduced, pressure has also reduced.From 4 ' o'clock to 1 o'clock, the heat in the liquid refrigerant absorbing environmental became gas, and volume swells, and pressure is constant, but interior can having increased.
B point and b ' put gas-liquid two-phase Mixed Zones among Fig. 1, and temperature is identical, but the mass ratio of gas phase and liquid phase is different, and namely humidity is different.The humidity that b is ordered will be hanged down, and the content of liquid phase is few, and the content of gas phase is more.From the b point to b ' point, some steam can continue to be condensed into liquid phase working fluid.Owing to can discharge latent heat in the condensation process, so the enthalpy that b is ordered will do, the enthalpy of b ' point will hang down.
In Fig. 1, embodiment of the present utility model shown in Figure 2, from 1 o'clock to 1 ' point, the low pressure gaseous working medium absorbs energy through regenerator, temperature raises (it is overheated to occur), from 1 ' o'clock to 2 ' point, gaseous working medium is compressed, temperature rising, pressure increase.
In Fig. 1, embodiment of the present utility model shown in Figure 3, from 1 o'clock to 1 " ' point, gaseous working medium is compressed in booster; temperature raises; pressure increases, from 1 " ' point is to 1 " point, gaseous working medium is through regenerator; absorb energy; temperature rising (it is overheated to occur), from 1 " o'clock to 2 ' point, gaseous working medium is compressed, temperature raises, and pressure increases.
In Fig. 1, embodiment of the present utility model shown in Figure 4, from 1 o'clock to 1 ' point, the low pressure gaseous working medium is through regenerator, absorb energy, temperature raises (it is overheated to occur), from 1 ' o'clock to 1 " point, the low pressure gaseous working medium with mix from the working medium of the first condenser; pressure increase; temperature rising, from 1 " o'clock to 2 ' point, gaseous working medium is compressed, temperature raises, and pressure increases.
In each embodiment of the present utility model, preferably, such as the high temperature heat pump among Fig. 2, from the high-pressure working medium of described compressor 101 superheat state out, at first in the first condenser 102, the sensible heat that discharges is progressively passed to the first heat-carrying agent, make the first heat-carrying agent meet the requirements of temperature; Then, high-pressure working medium enters in described the second condenser 103 and condenses into gradually liquid high-pressure working medium, and the latent heat that discharges is passed to the first heat-carrying agent, makes the temperature of the first heat-carrying agent be elevated to gradually condensation temperature close to high-pressure working medium; Then, high-pressure working medium enters in the described regenerator 107, and the part latent heat that carries and/or sensible heat transfer are given from the low pressure working fluid of described evaporimeter 106 outputs, makes low pressure working fluid enter superheat state; At last, high-pressure working medium enters in described the 3rd condenser 104, give the second heat-carrying agent with remaining condensation latent heat and/or part sensible heat transfer after, total condensation is liquid high-pressure working medium, and meets the requirements of degree of supercooling; Liquid high-pressure working medium is expanded to low pressure working fluid, and is evaporated to the gaseous state low pressure working fluid behind the heat in the absorbing environmental in described evaporimeter 106 through behind the described expansion valve 105; The gaseous state low pressure working fluid becomes high-pressure gaseous and crosses hot working fluid after compressing through described compressor 101.
In an embodiment of the present utility model, with reference to Fig. 2, Fig. 3 and Fig. 4, in described the 3rd condenser 104, the residue latent heat of high-pressure working medium is transferred to the second heat-carrying agent, make high-pressure working medium meet the requirements of degree of supercooling, make the stable working state of described high temperature heat pump controlled.
In an embodiment of the present utility model, with reference to Fig. 2, Fig. 3 and Fig. 4, make the part latent heat of high-pressure working medium and/or sensible heat transfer to the low pressure working fluid from described evaporimeter 106 and/or 111 outputs of described booster by regenerator 107, make low pressure working fluid enter superheat state, improved the intake air temperature of described compressor, and then improved the temperature of described compressor outlet place high-pressure working medium, thereby when environment temperature is identical, increased the output quantity of the heat-carrying agent that specific energy consumption produces, made described high temperature heat pump keep higher Energy Efficiency Ratio.
In an embodiment of the present utility model, the characteristic of the working medium of using according to authorized pressure and allowable temperature, the compressor of compressor, the output temperature of the first heat-carrying agent are selected pressure at expulsion and the delivery temperature of compressor, regulate choke valve and make the pressure at expulsion of compressor reach selected pressure; Characteristic and the evaporating pressure of the selected low pressure working fluid of environment temperature and the degree of supercooling of high-pressure working medium of the working medium of using according to compressor, the control valve of regulating in the regenerator makes the degree of superheat of low pressure working fluid reach set point value; According to the input temp of the first heat-carrying agent, use the control valve that is connected in the first heat-carrying agent flow passage to regulate the flow of the first heat-carrying agent, make the output temperature that the first heat-carrying agent reaches to be needed; Flow with being connected to control valve in the second heat-carrying agent flow passage and regulating the second heat-carrying agent makes high-pressure working medium meet the requirements of degree of supercooling.
In an embodiment of the present utility model, in Fig. 3, Fig. 4, be connected with a plurality of heat exchangers in the described regenerator 107, for example 3, and a plurality of control valve 109, for example 4, regulate these control valves to regulate flow process and the flow of regenerator mesolow working medium, can regulate the degree of superheat of low pressure working fluid, reach set point value after, with the locking of these control valves.After this delivery temperature of described compressor automatically adjusts by expansion valve.
In an embodiment of the present utility model, in Fig. 3, the low pressure working fluid of exporting from evaporimeter 106 enters booster 111, enters regenerator through behind the booster 111, raises the temperature to required value, then enters compressor 101.The high-pressure working medium that booster 111 usefulness are drawn from the first condenser 102 drives, and finishes the high-pressure working medium that drives function and enters the 3rd condenser 104.When lower when environment temperature, all low from the Temperature of Working of evaporimeter 106 output and pressure, adopt this supercharging mode can reduce the electric energy that compressor consumes, further improve the Energy Efficiency Ratio of heat pump.When booster 111 does not start, behind the low pressure working fluid process check valve 110 of evaporimeter 106 outputs, flow through regenerator 107, then enter compressor 101.
In an embodiment of the present utility model, with reference to Fig. 2, Fig. 3 and Fig. 4, storage facility 112 is set in the flow passage of working medium, with buffering with store redundant working medium, guarantee flow passage unimpeded of working medium.
In an embodiment of the present utility model, with reference to Fig. 3 and Fig. 4, the combination valve 113 of choke valve, pressure limiting valve and differential valve is set in the flow passage of working medium, controlling pressure and the pressure differential in the first condenser, the second condenser, the 3rd condenser, keeps flow passage stable of working medium.
In an embodiment of the present utility model, with reference to Fig. 3 and Fig. 4, the first pressure-regulating valve 108 is set in the flow passage of working medium, enter the pressure of the working medium of described compressor with adjusting.
In an embodiment of the present utility model, with reference to Fig. 4, directly the part high-pressure working medium of the first condenser 102 outputs is introduced compressor 101 behind the second pressure-regulating valve 114, improved input pressure and the temperature of compressor.When adopting piston compressor, can reduce the electric energy that compressor consumes, further improve the Energy Efficiency Ratio of heat pump.
In an embodiment of the present utility model, as the first heat-carrying agent, evaporating temperature is 30 ℃ with water, and the input temp of water and output temperature are followed successively by 30 ℃ and 80 ℃, and the heat that water absorbs has reached more than 5 with the ratio of the electric energy of heat pump consumption.
In another embodiment of the present utility model, as the first heat-carrying agent, evaporating temperature is 30 ℃ with water, and the input temp of water and output temperature are followed successively by 30 ℃ and 90 ℃, and the heat that water absorbs has reached more than 4 with the ratio of the electric energy of heat pump consumption.
By the high temperature heat pump that each embodiment of the present utility model provides, can bring following at least a beneficial effect:
1. can make working medium before entering expansion valve, be condensed to lower temperature, improve Energy Efficiency Ratio, and improve the job stability of heat pump, make the job stability of heat pump not be subjected to the impact of heat-carrying agent output temperature.In the first condenser and the second condenser, working medium still because the flow of the first heat-carrying agent is fixed, can't be reduced to predetermined temperature with the temperature of working medium with most of heat transferred the first heat-carrying agent; In the 3rd condenser, with remaining a part of heat transferred the second heat-carrying agent, the working medium that flows out from the 3rd condenser can be reduced to predetermined temperature to working medium again.Thereby on the one hand so that the working medium that flows out can be condensed to lower temperature before entering expansion valve, and can from evaporimeter, absorb more heat from the 3rd condenser, improve Energy Efficiency Ratio, make on the other hand working medium reach the liquid state with stable degree of supercooling.Thereby make the heat pump steady operation.
2. further improve the Energy Efficiency Ratio of high temperature heat pump by the backheat technology.The high-pressure working medium of gas-liquid mixed state passes to the gaseous state low pressure working fluid by described regenerator with part sensible heat and/or part latent heat, make high-pressure working medium obtain condensation on the one hand, be convenient to from environment, absorb more heat by described evaporimeter, make on the other hand low pressure working fluid overheated, improved the intake air temperature of described compressor, make described compressor higher high-pressure working medium of output temperature when consuming less electric energy, thereby improved the Energy Efficiency Ratio of high temperature heat pump, the heat that absorbs from the heat-carrying agent of described the first condenser output and the ratio of the electric energy of heat pump consumption can be reached more than 4.
3. further improve the Energy Efficiency Ratio of high temperature heat pump.When environment temperature is low, utilize the part high-pressure working medium to drive the pressure that pressure charging system improves low pressure working fluid, be conducive to obtain higher Energy Efficiency Ratio; And/or utilize the second pressure-regulating valve that the part high-pressure working medium is introduced directly in the compressor inlet, and improve compressor inlet air temperatures and pressure, also be conducive to obtain higher Energy Efficiency Ratio.
4. the output temperature of heat-carrying agent is high, and temperature is adjustable.Can be as required, in 60 ℃ and above temperature range, select the output temperature of heat-carrying agent.
The various embodiment that the utility model provides can be as required in any way mutually combination, the technical scheme that obtains by this combination is also in scope of the present utility model.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification interior.
Claims (7)
1. a high temperature heat pump is characterized in that, comprising:
Compressor, condenser system, expansion valve, evaporimeter;
Described condenser system comprises the first condenser, the second condenser, the 3rd condenser, working medium flows out from described compressor, after flowing through successively described the first condenser, described the second condenser, described the 3rd condenser, described expansion valve, described evaporimeter, get back in the described compressor, form the flow passage of described working medium;
Wherein, the inside of described the first condenser and described the second condenser is respectively equipped with the flow passage of first heat-carrying agent opposite with the flow direction of described working medium, and described the first heat-carrying agent flows through described the first condenser through behind described the second condenser;
Wherein, the inside of described the 3rd condenser is provided with the flow passage of second heat-carrying agent opposite with the flow direction of described working medium.
2. high temperature heat pump as claimed in claim 1 is characterized in that, further comprises:
Regenerator, its inside are provided with two flow passages of working medium, and wherein, after working medium flowed out from described the second condenser, a flow passage through the inside of described regenerator flowed into described the 3rd condenser; Wherein, after working medium flowed out from described evaporimeter, another flow passage through the inside of described regenerator flowed into described compressor; Wherein, the flow direction of the working medium in described two flow passages is opposite.
3. high temperature heat pump as claimed in claim 2 is characterized in that,
Described the first condenser is a plurality of mutual series connection and/or heat exchanger in parallel;
And/or,
Described the second condenser is a plurality of mutual series connection and/or heat exchanger in parallel;
And/or,
Described the 3rd condenser is a plurality of mutual series connection and/or heat exchanger in parallel;
And/or,
Described regenerator is a plurality of mutual series connection and/or heat exchanger in parallel.
4. high temperature heat pump as claimed in claim 3, it is characterized in that, described heat exchanger comprises the thermotube shell with single interior space, described interior space under-filled has the liquid phase heat transfer medium, the bottom in described interior space is provided with the first pipeline that flows for heat eliminating medium, described the first pipeline is by the complete submergence of described heat transfer medium, and the top in described interior space is provided with the second pipe for the thermal-arrest media flow, and described second pipe is positioned at the top of described heat transfer medium liquid level.
5. high temperature heat pump as claimed in claim 2, it is characterized in that, in described the first condenser, described the second condenser, described the 3rd condenser, the described regenerator any one or a plurality of at least one flow control valve that is provided with are with the flow of working medium and/or described the first heat-carrying agent, described the second heat-carrying agent in the control flow passage.
6. high temperature heat pump as claimed in claim 1 is characterized in that, further comprises with lower at least a:
Choke valve, it is connected between described the second condenser and described the 3rd condenser, is lower than the pressure of working medium in described the second condenser for the pressure that makes described the 3rd condenser working medium;
Pressure limiting valve, it is connected between described the second condenser and described the 3rd condenser, is used for controlling described working medium at the pressure of described the first condenser and the second condenser, makes it be lower than predetermined value;
Differential valve, it is connected between described the second condenser and described the 3rd condenser, is used for making the pressure differential between described the second condenser and described the 3rd condenser be lower than predetermined value;
The first pressure-regulating valve, it is connected between described evaporimeter and the described compressor, is used for regulating the pressure of the described working medium that enters described compressor;
Pressure charging system, it comprises in parallel booster and check valve, described pressure charging system is connected between described evaporimeter and the described compressor, flow through described booster from the working medium of described evaporimeter outflow after, enter described compressor; Wherein, described booster is connected with the sender property outlet of described the first condenser and the working medium entrance of described the 3rd condenser respectively, the part working medium that flows out from described the first condenser flows through the working medium entrance that flows into described the 3rd condenser behind the described booster, and the part working medium that described the first condenser flows out is carried out supercharging to the working medium that flows out from described evaporimeter in described booster; When described booster did not start, the working medium that flows out from described evaporimeter entered described compressor through described check valve;
The second pressure-regulating valve, it is connected between the working medium import of the sender property outlet of described the first condenser and described compressor, and the described working medium of part that flows out from described the first condenser flows into described compressor behind described the second pressure-regulating valve.
7. high temperature heat pump as claimed in claim 1 is characterized in that, further comprises with lower at least a:
Be used for buffering and store the storage facility of described working medium, it is connected between described the 3rd condenser and the described expansion valve;
One or more pressure sensors, it is connected in the flow passage of described working medium to detect the pressure of described working medium, and/or, be connected in the flow passage of described the first heat-carrying agent to detect the pressure of described the first heat-carrying agent, and/or, be connected in the flow passage of described the second heat-carrying agent to detect the pressure of described the second heat-carrying agent;
One or more temperature sensors, it is connected in the flow passage of described working medium to detect the temperature of described working medium, and/or, be connected in the flow passage of described the first heat-carrying agent to detect the temperature of described the first heat-carrying agent, and/or, be connected in the flow passage of described the second heat-carrying agent to detect the temperature of described the second heat-carrying agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329613 CN202734338U (en) | 2012-07-09 | 2012-07-09 | High-temperature heat pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220329613 CN202734338U (en) | 2012-07-09 | 2012-07-09 | High-temperature heat pump |
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| CN202734338U true CN202734338U (en) | 2013-02-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721225A (en) * | 2012-07-09 | 2012-10-10 | 西华大学 | High-temperature heat pump and using method thereof |
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2012
- 2012-07-09 CN CN 201220329613 patent/CN202734338U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721225A (en) * | 2012-07-09 | 2012-10-10 | 西华大学 | High-temperature heat pump and using method thereof |
| CN102721225B (en) * | 2012-07-09 | 2014-10-22 | 西华大学 | High-temperature heat pump and using method thereof |
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