Utility model content
The purpose of this utility model is to provide a kind of CO suitable for extremely cold area2Overlapping heat pump, it is existing to solve
Some CO2The energy consumed in overlapping heat pump can only be used for freezing and lacking and ask two grades of technologies utilized of the energy
Topic.
The utility model provides a kind of CO suitable for extremely cold area2Overlapping heat pump, including:Carbon dioxide heat-pump system
SAPMAC method, common heat pump refrigeration cycle and the 3rd cooling and warming water circulation;The 3rd cooling and warming water circulation includes setting successively
The second capillary and heat exchanger put, the heat exchanger are communicated with the first compressor, and first compressor by reversal valve
Water heater, outdoor heat exchanger and second capillary have been sequentially communicated by the reversal valve.
Wherein, be provided with the 3rd control valve between second capillary and the heat exchanger, the reversal valve with it is described
The 4th control valve is provided between water heater.
Specifically, the first fluid reservoir, the outdoor heat exchanger are provided between the reversal valve and first compressor
The 3rd fluid reservoir is provided between second capillary.
During practical application, the carbon dioxide heat-pump kind of refrigeration cycle includes expansion valve, the outdoor heat exchange set gradually
Device, internal exchanger, the second compressor and evaporative condenser, and the evaporative condenser by the internal exchanger with it is described
Expansion valve is connected.
The common heat pump refrigeration cycle includes the first capillary and the evaporative condenser set gradually, the evaporation
Condenser is communicated with first fluid reservoir and first compressor by the reversal valve, and first compressor passes through
The reversal valve has been sequentially communicated the heat exchanger and first capillary.
Wherein, be provided with the first control valve between the evaporative condenser and the reversal valve, the heat exchanger with it is described
The second control valve is provided between first capillary.
Specifically, it is provided with the second fluid reservoir between second control valve and first capillary.
Further, the reversal valve is four-way reversing valve.
Further, first control valve, second control valve, the 3rd control valve and the 4th control
Valve is magnetic valve.
Relative to prior art, the CO described in the utility model suitable for extremely cold area2Overlapping heat pump have with
Lower advantage:
The CO suitable for extremely cold area that the utility model is provided2In overlapping heat pump, including:Carbon dioxide heat-pump system
SAPMAC method, common heat pump refrigeration cycle and the 3rd cooling and warming water circulation;3rd cooling and warming water circulation includes setting gradually
The second capillary and heat exchanger, heat exchanger is communicated with the first compressor by reversal valve, and the first compressor passes through reversal valve
It has been sequentially communicated water heater, outdoor heat exchanger and the second capillary.Thus analysis is understood, what the utility model was provided is applied to pole
Tremble with fear regional CO2In overlapping heat pump, due to the first compressor and outdoor heat exchange in the 3rd cooling and warming water cycle process
Water heater is provided between device, therefore, it is possible to make the CO suitable for extremely cold area2Overlapping heat pump realizes refrigeration while system
The function of hot water, so as to effectively realize two grades of utilizations of the energy.
The utility model also provides a kind of CO suitable for extremely cold area2Overlapping heat pump and its control method, it is described
Suitable for the CO of extremely cold area2Overlapping heat pump includes:3rd cooling and warming water circulation, carbon dioxide heat-pump kind of refrigeration cycle and
Common heat pump refrigeration cycle;The second capillary that the 3rd cooling and warming water circulation includes setting gradually, the 3rd control valve, change
Hot device, the heat exchanger is communicated with the first compressor by reversal valve, and first compressor by the reversal valve successively
It is communicated with the 4th control valve, water heater, outdoor heat exchanger and second capillary;The carbon dioxide heat-pump kind of refrigeration cycle bag
Include the expansion valve set gradually, the outdoor heat exchanger, internal exchanger, the second compressor and evaporative condenser, and the steaming
The condenser that feels cold is connected by the internal exchanger with the expansion valve;The common heat pump refrigeration cycle includes what is set gradually
First capillary and the evaporative condenser, the evaporative condenser are connected through the first control valve and by the reversal valve
State the first compressor, and first compressor by the reversal valve be sequentially communicated the heat exchanger, the second control valve and
First capillary;The CO suitable for extremely cold area2The control method of overlapping heat pump includes:Cooling in summer is simultaneously
Heat water condition and winter heating's operating mode;The cooling in summer heats water condition simultaneously and comprised the following steps:Close described first
Control valve and second control valve, open the 3rd control valve and the 4th control valve, and the reversal valve is adjusted to
Refrigeration mode;Refrigeration working medium enters the heat exchanger after second capillary by the 3rd control valve;After heat absorption according to
It is secondary after the reversal valve and first compressor compresses, once exchanged heat into the water heater;Pass through after heat release
The outdoor heat exchanger carries out secondary heat exchange heat release;Second capillary is back to after heat release and completes refrigeration while water heating is followed
Ring;Winter heating's operating mode comprises the following steps:Close the 3rd control valve and the 4th control valve, open described the
One control valve and second control valve, and the reversal valve is adjusted to heating mode;Low-temperature zone refrigerant carbon dioxide passes through
The expansion valve enters the outdoor heat exchanger, and absorbs outdoor heat;Enter described second after the internal exchanger
Compressor;Enter the evaporative condenser after second compressor compresses, the expansion valve is back to after heat release and completes low
Temperature section is circulated;The refrigerant working medium of high temperature section enters the evaporative condenser through first capillary and absorbs low-temperature zone heat simultaneously
Exchanged heat;Sequentially pass through after the reversal valve and first compressor compresses, into the heat exchanger;Institute is back to after heat release
State the first capillary and complete high temperature section circulation.
The CO suitable for extremely cold area2Overlapping heat pump and its control method are with above-mentioned suitable for extremely cold area
CO2Overlapping heat pump has the advantage that identical relative to prior art, will not be repeated here.
Embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, sheet
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outer " are, based on orientation shown in the drawings or position relationship, to be only
Described for the ease of description the utility model and simplifying, rather than to indicate or imply that signified device or element must have specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection;Can be mechanical connection or electrical connection;Can be joined directly together, the indirect phase of intermediary can also be passed through
Even, can be the connection of two element internals.For the ordinary skill in the art, it can understand above-mentioned with concrete condition
Concrete meaning of the term in the utility model.
The CO suitable for extremely cold area that Fig. 1 provides for the utility model embodiment2The structural representation of overlapping heat pump
Figure.
As shown in figure 1, the utility model embodiment provides a kind of CO suitable for extremely cold area2Overlapping heat pump, bag
Include:Carbon dioxide heat-pump kind of refrigeration cycle, common heat pump refrigeration cycle and the 3rd cooling and warming water circulation;3rd refrigerated medium hot water is followed
Ring includes the second capillary 6 and heat exchanger 17 set gradually, and heat exchanger 17 is communicated with the first compressor 15 by reversal valve 16,
And first compressor 15 water heater 18, the capillary 6 of outdoor heat exchanger 2 and second have been sequentially communicated by reversal valve 16.
Relative to prior art, the CO suitable for extremely cold area described in the utility model embodiment2Overlapping heat pump
Have the advantage that:
The CO suitable for extremely cold area that the utility model embodiment is provided2In overlapping heat pump, as shown in figure 1, bag
Include:Carbon dioxide heat-pump kind of refrigeration cycle, common heat pump refrigeration cycle and the 3rd cooling and warming water circulation;3rd refrigerated medium hot water
Circulation includes the second capillary 6 and heat exchanger 17 set gradually, and heat exchanger 17 is communicated with the first compressor by reversal valve 16
15, and the first compressor 15 has been sequentially communicated water heater 18, the capillary 6 of outdoor heat exchanger 2 and second by reversal valve 16.Thus
Knowable to analysis, the CO suitable for extremely cold area that the utility model embodiment is provided2In overlapping heat pump, due to the 3rd refrigeration
Heat and be provided with water heater 18 between the first compressor 15 and outdoor heat exchanger 2 in water cycle process, therefore, it is possible to make to be applicable
In the CO of extremely cold area2The function of water heating while overlapping heat pump realizes refrigeration, so as to effectively realize the two of the energy
Level is utilized.
Wherein, for the ease of making the CO suitable for extremely cold area2Overlapping heat pump cooling in summer simultaneously water heating with
Switched between the two operating modes of winter heating, as shown in figure 1, can be set between above-mentioned second capillary 6 and heat exchanger 17
The 3rd control valve 8 is equipped with, the 4th control valve 5 can be provided between reversal valve 16 and water heater 18.Therefore, when the 3rd control valve
8 and the 4th control valve 5 when opening (other control valve closings) and reversal valve 16 and being in refrigeration mode, it is adaptable to extremely cold area
CO2Overlapping heat pump is at cooling in summer while heating water condition;When the 3rd control valve 8 and the 4th control valve 5 are closed
When (corresponding control valve unlatching) and reversal valve 16 are in heating mode, it is adaptable to the CO of extremely cold area2Overlapping heat pump can
In winter heating's operating mode.
Specifically, as shown in figure 1, the first fluid reservoir can be provided between the compressor 15 of above-mentioned reversal valve 16 and first
14, the 3rd fluid reservoir 7 can be provided between the capillary 6 of outdoor heat exchanger 2 and second.Firstth, the 3rd fluid reservoir (14,7) energy
Enough play a part of storing refrigerant, additionally it is possible to play a part of slow pressure and point liquid.
During practical application, the CO suitable for extremely cold area that the utility model embodiment is provided2In overlapping heat pump, such as
Shown in Fig. 1, carbon dioxide heat-pump kind of refrigeration cycle can include expansion valve 1, outdoor heat exchanger 2, the internal exchanger set gradually
3rd, the second compressor 4 and evaporative condenser 12, and the evaporative condenser 12 connected by internal exchanger 3 with expansion valve 1;Commonly
Heat pump refrigeration cycle can include the first capillary 11 and evaporative condenser 12 set gradually, and the evaporative condenser 12 is by changing
The first fluid reservoir 14 and the first compressor 15 are communicated with to valve 16, and first compressor 15 has been sequentially communicated by reversal valve 16
The capillary 11 of heat exchanger 17 and first, so that carbon dioxide heat-pump kind of refrigeration cycle and common heat pump refrigeration cycle can make to be applied to
The CO of extremely cold area2Overlapping heat pump effectively realizes the effect of winter heating.
Herein it should be added that, the above-mentioned capillary 6 of first capillary 11 and second can function similarly to expansion
The effect of valve.
Wherein, as shown in figure 1, the first control valve 13 can be provided between above-mentioned evaporative condenser 12 and reversal valve 16,
The second control valve 9 can be provided between the capillary 11 of heat exchanger 17 and first;Specifically, above-mentioned second control valve 9 and first
The second fluid reservoir 10 is also provided between capillary 11.
The CO suitable for extremely cold area that Fig. 2 provides for the utility model embodiment2Cooling in summer in overlapping heat pump
Water heating flows to schematic diagram simultaneously;The CO suitable for extremely cold area that Fig. 3 provides for the utility model embodiment2Overlapping heat pump
Winter heating flows to schematic diagram in system.
Further, in order to easily realize the conversions of two operating modes, what the utility model embodiment was provided is applied to pole
Tremble with fear regional CO2In overlapping heat pump, above-mentioned reversal valve 16 can be preferably four-way reversing valve.When actual use, work as four-way
When reversal valve is in refrigeration mode, as shown in Fig. 2 flow direction in the 3rd cooling and warming water circulation for successively by heat exchanger 17, change
To valve 16, the first fluid reservoir 14, the first compressor 15 and through the control valve 5 of reversal valve 16 to the 4th and the outdoor heat exchange of water heater 18
Device 2;When four-way reversing valve is in heating mode, as shown in figure 3, the flow direction in common heat pump refrigeration cycle is successively by evaporating
Condenser 12, the first control valve 13, reversal valve 16, the first fluid reservoir 14, the first compressor 15 and through reversal valve 16 to heat exchanger
17。
Further, automatically controlled to realize, the CO suitable for extremely cold area that the utility model embodiment is provided2
In overlapping heat pump, above-mentioned first control valve 13, the second control valve 9, the 3rd control valve 8 and the 4th control valve 5 can be
Magnetic valve.
The CO suitable for extremely cold area that Fig. 4 provides for the utility model embodiment2The control method of overlapping heat pump
Schematic flow sheet.
The utility model embodiment also provides a kind of CO suitable for extremely cold area2Overlapping heat pump and its controlling party
Method, as shown in Figure 1-Figure 3, including:3rd cooling and warming water circulation, carbon dioxide heat-pump kind of refrigeration cycle and common heat pump refrigerating
Circulation;3rd cooling and warming water circulation includes the second capillary 6, the 3rd control valve 8, the heat exchanger 17 set gradually, heat exchange
Device 17 is communicated with the first compressor 15 by reversal valve 16, and the first compressor 15 has been sequentially communicated the 4th control by reversal valve 16
Valve 5 processed, water heater 18, the capillary 6 of outdoor heat exchanger 2 and second;The carbon dioxide heat-pump kind of refrigeration cycle includes what is set gradually
Expansion valve 1, outdoor heat exchanger 2, internal exchanger 3, the second compressor 4 and evaporative condenser 12, and evaporative condenser 12 passes through
Internal exchanger 3 is connected with expansion valve 1;The common heat pump refrigeration cycle includes the first capillary 11 set gradually and evaporated cold
Condenser 12, evaporative condenser 12 through the first control valve 13 and is communicated with the first compressor 15, and the first compression by reversal valve 16
Machine 15 has been sequentially communicated heat exchanger 17, the second control valve 9 and the first capillary 11 by reversal valve 16.As shown in figure 4, control
Method includes:Cooling in summer heats water condition and winter heating's operating mode simultaneously;With reference to shown in Fig. 2, above-mentioned cooling in summer is made simultaneously
Hot water operating mode may include steps of:Step S11, the first control valve 13 of closing and the second control valve 9, open the 3rd control valve
8 and the 4th control valve 5, and reversal valve 16 is adjusted to refrigeration mode;Step S12, refrigeration working medium pass through after the second capillary 6
Three control valves 8 enter heat exchanger 17;Sequentially pass through after the compression of the compressor 15 of reversal valve 16 and first, enter after step S13, heat absorption
Water heater 18 is once exchanged heat;Secondary heat exchange heat release is carried out by outdoor heat exchanger 2 after step S14, heat release;Step S15, put
The second capillary 6 is back to after heat and completes refrigeration while heating water circulation;With reference to shown in Fig. 3, above-mentioned winter heating's operating mode can be wrapped
Include following steps:Step S21, the 3rd control valve 8 of closing and the 4th control valve 5, open the first control valve 13 and the second control valve
9, and reversal valve 16 is adjusted to heating mode;Step S22, low-temperature zone refrigerant carbon dioxide are changed by expansion valve 1 into outdoor
Hot device 2, and absorb outdoor heat;Step S23, after internal exchanger 3 enter the second compressor 4;Step S24, through second
Compressor 4 enters evaporative condenser 12 after compressing, and expansion valve 1 is back to after heat release and low-temperature zone circulation is completed;Step S31, high temperature
The refrigerant working medium of section enters the absorption low-temperature zone heat of evaporative condenser 12 through the first capillary 11 and exchanged heat;Step S32,
Sequentially pass through after the compression of the compressor 15 of reversal valve 16 and first, into heat exchanger 17;The first capillary is back to after step S33, heat release
Pipe 11 simultaneously completes high temperature section circulation.
Herein it should be added that, during winter heating's operating mode, high temperature section refrigerant after low-temperature zone refrigerant is first circulated
Recycling, and low-temperature zone refrigerant can be continued cycling through as needed during high temperature section refrigerant circulation.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.