CN110056934A - Heat step by step complementary floor heating, two alliance of hot water heat pump system and control method - Google Patents

Heat step by step complementary floor heating, two alliance of hot water heat pump system and control method Download PDF

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Publication number
CN110056934A
CN110056934A CN201910291440.XA CN201910291440A CN110056934A CN 110056934 A CN110056934 A CN 110056934A CN 201910291440 A CN201910291440 A CN 201910291440A CN 110056934 A CN110056934 A CN 110056934A
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CN
China
Prior art keywords
floor heating
water
valve
heat
solenoid valve
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Pending
Application number
CN201910291440.XA
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Chinese (zh)
Inventor
邓晨冕
邱跃
周炀
王冰军
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Ningbo Haizhipu Intelligent Technology Co Ltd
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Ningbo Haizhipu Intelligent Technology Co Ltd
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Priority to CN201910291440.XA priority Critical patent/CN110056934A/en
Publication of CN110056934A publication Critical patent/CN110056934A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00Details
    • F24D19/10Arrangement or mounting of control or safety devices
    • F24D19/1006Arrangement or mounting of control or safety devices for water heating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/08Hot-water central heating systems in combination with systems for domestic hot-water supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/12Tube and panel arrangements for ceiling, wall, or underfloor heating
    • F24D3/14Tube and panel arrangements for ceiling, wall, or underfloor heating incorporated in a ceiling, wall or floor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24DDOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00Hot-water central heating systems
    • F24D3/18Hot-water central heating systems using heat pumps
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/12Hot water central heating systems using heat pumps

Abstract

The present invention disclose a kind of heat step by step complementary floor heating, two alliance of hot water heat pump system and control method, the system includes DC frequency-changeable compressor, oil eliminator, water tank, four-way reversing valve, outdoor heat exchanger, floor heating side heat exchanger and gas-liquid separator, which includes: a, floor heating mode;B, warm up domestic hot-water's mode;C, domestic hot-water's mode;The present invention is able to solve the problems such as conventional heat pump floor heating device has a single function with heat-pump water heater, energy utilization rate is low, to realize two alliances of floor heating and domestic hot-water, improves the energy utilization rate of equipment.

Description

Heat step by step complementary floor heating, two alliance of hot water heat pump system and control method
Technical field
The present invention relates to heat pump system technical fields, and in particular to a kind of heat floor heating of complementation, two alliance of hot water step by step Heat pump system and control method.
Background technique
Heat pump techniques are concerned in recent years, in the epoch for advocating environmental protection and energy saving, the height designed and developed using heat pump techniques Efficiency and environmentally friendly ground heating system, hot water supply system etc. have been to be concerned by more and more people.
The heat pump ground warming device and air energy thermal water installations in China at present, substantially two kinds of mutually independent differences are set Standby, conventional heat pump ground warming device only provides heating, and conventional heat-pump water heater only provides domestic hot-water;The two is substantially former Manage identical, but heat pump ground warming device is in idle state in summer and transition season, and heat-pump water heater is served only for generating life Hot water living, the function and energy utilization rate of equipment are not all fully utilized.One family installs water heater and floor heating, needs Two sets of equipment are installed, this two sets of equipment are likely to two different brands, purchase and install trouble, and installation space occupied is big.
Therefore, heat pump system is optimized, floor heating and the use demand of domestic hot-water can be met simultaneously, mentioned High equipment and energy utilization rate, are highly desirable.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provide a kind of heat step by step complementary floor heating, two alliance of hot water heat pump System and control method, be able to solve conventional heat pump floor heating device had a single function with heat-pump water heater, energy utilization rate it is low The problems such as, to realize two alliances of floor heating and domestic hot-water, improve the energy utilization rate of equipment.
Heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, including DC frequency-changeable compressor, oil Separator, water tank, four-way reversing valve, outdoor heat exchanger, floor heating side heat exchanger and gas-liquid separator, the one of DC frequency-changeable compressor End is connect with the first end of oil eliminator, after the first solenoid valve of one end of the heat exchanger in water tank series connection with oil eliminator second End connects, and connect after one end series connection second solenoid valve of the heat exchanger in water tank with the second end of oil eliminator, four-way reversing valve First end series connection third solenoid valve after connect with the second end of oil eliminator, one end of outdoor heat exchanger and four-way reversing valve The connection of 4th end, the other end of outdoor heat exchanger and one end of electric expansion valve connect, the other end of electric expansion valve and the 4th One end of solenoid valve connects, and connect after the other end series connection check valve of the heat exchanger in water tank with one end of the 4th solenoid valve, the It is connect after the other end series connection liquid pipe shut-off valve of four solenoid valves with one end of floor heating side heat exchanger, the other end of floor heating side heat exchanger It is connect after series connection tracheae shut-off valve with the second end of four-way reversing valve, after the third end series connection oil return capillary of oil eliminator and directly The other end connection of frequency-changeable compressor is flowed, one end of gas-liquid separator and the other end of DC frequency-changeable compressor connect, gas-liquid point The third end of the other end and four-way reversing valve from device connects.
Heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, wherein DC frequency-changeable compressor and High-voltage switch gear and high-pressure pressure sensor are installed on pipeline between oil eliminator.
Heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, wherein water tank is installed in water tank Temperature sensor.
Heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, wherein floor heating side heat exchanger into Inflow temperature sensor is installed on water pipe, leaving water temperature sensors are installed on the outlet pipe of floor heating side heat exchanger.
Heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, wherein gas-liquid separator and four-way Low tension switch is installed on pipeline between reversal valve.
A kind of heat step by step complementary floor heating, two alliance of hot water heat pump system control method, including following Working mould Formula:
A, floor heating mode;
B, warm up domestic hot-water's mode;
C, domestic hot-water's mode.
A kind of heat step by step complementary floor heating, two alliance of hot water heat pump system control method, wherein in floor heating mode Under, successively pass through oil eliminator, third solenoid valve, four-way through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor and changes Enter in the heat exchanger of floor heating side after to valve and tracheae shut-off valve and carry out heat convection with water with floor heating, high pressure gaseous refrigerant is cold Become the liquid refrigerants of medium temperature and medium pressure after solidifying heat release, the liquid refrigerants of medium temperature and medium pressure successively pass through liquid pipe shut-off valve, solenoid valve and Enter after electric expansion valve throttles and carry out heat convection in outdoor heat exchanger with outdoor air, the liquid refrigerants of medium temperature and medium pressure steams Become the gas-liquid two-phase refrigerant of low-temp low-pressure after hair heat absorption, the gas-liquid two-phase refrigerant of low-temp low-pressure enters gas-liquid through four-way reversing valve In separator, liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant, which returns in DC frequency-changeable compressor, to be compressed, complete At floor heating mode.
A kind of heat step by step complementary floor heating, two alliance of hot water heat pump system control method, wherein warm up life on ground Under hot-water mode living, pass through oil eliminator, a part of refrigerant through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor Enter in the heat exchanger in water tank by the first solenoid valve and second solenoid valve and condense heat release and generates domestic hot-water, high temperature and pressure The entrance of electric expansion valve is reached after gaseous coolant condensation through check valve;Another part high pressure gaseous refrigerant is by third electricity Enter in the heat exchanger of floor heating side after magnet valve, four-way reversing valve and tracheae shut-off valve and carry out heat convection with water with floor heating, high temperature is high Become the liquid refrigerants of medium temperature and medium pressure after pressure gaseous coolant condensation heat release, the liquid refrigerants of medium temperature and medium pressure by liquid pipe shut-off valve and Refrigerant after solenoid valve with water tank side converges, refrigerant after electric expansion valve throttles enter outdoor heat exchanger in outdoor air into Row heat convection becomes the gas-liquid two-phase refrigerant of low-temp low-pressure, the gas-liquid two-phase refrigerant warp of low-temp low-pressure after refrigerant evaporation heat absorption Four-way reversing valve enters in gas-liquid separator, and liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant returns to DC frequency-changing It is compressed in compressor, completes ground and warm up domestic hot-water's mode.
A kind of heat step by step complementary floor heating, two alliance of hot water heat pump system control method, wherein in domestic hot-water Under mode, pass through oil eliminator, the first solenoid valve and second through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor Solenoid valve, which enters in the heat exchanger in water tank and condenses heat release, generates domestic hot-water, through unidirectional after the condensation of high pressure gaseous refrigerant Valve reaches the entrance of electric expansion valve, and refrigerant enters in outdoor heat exchanger after electric expansion valve throttles to carry out with outdoor air Heat convection enters gas-liquid separator by four-way reversing valve after refrigerant evaporation heat absorption, and liquid refrigerants is deposited on gas-liquid separator Bottom, gaseous coolant, which returns in DC frequency-changeable compressor, to be compressed, and completes domestic hot-water's mode.
The present invention is able to solve that conventional heat pump floor heating device has a single function with heat-pump water heater, energy utilization rate is low etc. and asks Topic, to realize two alliances of floor heating and domestic hot-water, improves the energy utilization rate of equipment.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is systematic schematic diagram of the invention;
Fig. 2 is systematic schematic diagram of the present invention under floor heating mode;
Fig. 3 is the systematic schematic diagram that the present invention warms up under domestic hot-water's mode on ground;
Fig. 4 is systematic schematic diagram of the present invention under domestic hot-water's mode;
Fig. 5 is the switch state schematic diagram of the first solenoid valve and second solenoid valve under water tank water temperature situation of change;
Fig. 6 is the switch state signal of the first solenoid valve and second solenoid valve in floor heating Inlet and outlet water difference variation Figure.
Specific embodiment
Multiple embodiments of the invention will be disclosed with schema below, as clearly stated, the details in many practices It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Also It is to say, in some embodiments of the invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema, Some known usual structures and component will be painted it in the drawings in simply illustrative mode.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, not especially censure The meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique term Or operation, it is not understood to indicate or imply its relative importance or implicitly indicates the number of indicated technical characteristic Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.In addition, each Technical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the art Plinth will be understood that the combination of this technical solution is not present when conflicting or cannot achieve when occurs in the combination of technical solution, Also not the present invention claims protection scope within.
As shown in Figs 1-4, heat of the invention step by step complementary floor heating, two alliance of hot water heat pump system, including direct current Frequency-changeable compressor 1, oil eliminator 2, water tank 5, four-way reversing valve 7, outdoor heat exchanger 8, floor heating side heat exchanger 13 and gas-liquid separation One end of device 15, DC frequency-changeable compressor 1 is connect with the first end of oil eliminator 2, one end of the heat exchanger in water tank 5 series connection the Connect after one solenoid valve 3 with the second end of oil eliminator 2, after one end of the heat exchanger in water tank 5 series connection second solenoid valve 4 with oil The second end of separator 2 connects, and connects after the first end series connection third solenoid valve 6 of four-way reversing valve 7 with the second end of oil eliminator 2 It connects, one end of outdoor heat exchanger 8 is connect with the 4th end of four-way reversing valve 7, the other end and electric expansion valve of outdoor heat exchanger 8 9 one end connection, the other end of electric expansion valve 9 connect with one end of the 4th solenoid valve 11, the heat exchanger in water tank 5 it is another It is connect after end series connection check valve 10 with one end of the 4th solenoid valve 11, the other end series connection liquid pipe shut-off valve 12 of the 4th solenoid valve 11 It connect with one end of floor heating side heat exchanger 13, is changed after the other end series connection tracheae shut-off valve 14 of floor heating side heat exchanger 13 with four-way afterwards It is connected to the second end of valve 7, it is another with DC frequency-changeable compressor 1 after the third end series connection oil return capillary 16 of oil eliminator 2 End connection, one end of gas-liquid separator 15 connect with the other end of DC frequency-changeable compressor 1, the other end of gas-liquid separator 15 and The third end of four-way reversing valve 7 connects;High-voltage switch gear is installed on pipeline between DC frequency-changeable compressor 1 and oil eliminator 2 18 and high-pressure pressure sensor 19;Water tank temperature sensor 20 is installed in water tank 5;Pacify on the water inlet pipe of floor heating side heat exchanger 13 Equipped with inflow temperature sensor 21, leaving water temperature sensors 22 are installed on the outlet pipe of floor heating side heat exchanger 13;Gas-liquid separation Low tension switch 17 is installed on the pipeline between device 15 and four-way reversing valve 7.
A kind of heat step by step complementary floor heating, two alliance of hot water heat pump system control method, including following Working mould Formula:
A, floor heating mode;Under floor heating mode, successively through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor 1 After oil eliminator 2, third solenoid valve 6, four-way reversing valve 7 and tracheae shut-off valve 14 enter floor heating side heat exchanger 13 in ground It is warm to carry out heat convection with water, become the liquid refrigerants of medium temperature and medium pressure, medium temperature and medium pressure after the condensation heat release of high pressure gaseous refrigerant Liquid refrigerants successively by liquid pipe shut-off valve 12, solenoid valve 11 and through electric expansion valve 9 throttling after enter outdoor heat exchanger 8 in Heat convection is carried out with outdoor air, the gas-liquid two-phase for becoming low-temp low-pressure after the liquid refrigerants evaporation endothermic of medium temperature and medium pressure is cold The gas-liquid two-phase refrigerant of matchmaker, low-temp low-pressure enter in gas-liquid separator 15 through four-way reversing valve 7, and liquid refrigerants is deposited on gas-liquid point From 15 bottom of device, gaseous coolant, which returns in DC frequency-changeable compressor 1, to be compressed, and completes floor heating mode;
B, warm up domestic hot-water's mode;Warm up under domestic hot-water's mode on ground, it is compressed through DC frequency-changeable compressor 1 High pressure gaseous refrigerant passes through oil eliminator 2, and a part of refrigerant enters water tank 5 by the first solenoid valve 3 and second solenoid valve 4 In heat exchanger in and condense heat release generate domestic hot-water, high pressure gaseous refrigerant condensation after through check valve 10 reach electronics it is swollen The entrance of swollen valve 9;Another part high pressure gaseous refrigerant passes through third solenoid valve 6, four-way reversing valve 7 and tracheae shut-off valve 14 Enter in floor heating side heat exchanger 13 afterwards and carries out heat convection with water with floor heating, high pressure gaseous refrigerant, which condenses, to be become after heat release The liquid refrigerants of the liquid refrigerants of middle benefit gas pressure, medium temperature and medium pressure is cold with 5 side of water tank after liquid pipe shut-off valve 12 and solenoid valve 11 Matchmaker converges, and refrigerant enters after the throttling of electric expansion valve 9 carries out heat convection with outdoor air in outdoor heat exchanger 8, refrigerant steams Become the gas-liquid two-phase refrigerant of low-temp low-pressure after hair heat absorption, the gas-liquid two-phase refrigerant of low-temp low-pressure enters gas through four-way reversing valve 7 In liquid/gas separator 15, liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant is returned in DC frequency-changeable compressor 1 and pressed Contracting completes ground and warms up domestic hot-water's mode;
C, domestic hot-water's mode;Under domestic hot-water's mode, through the compressed high pressure gaseous of DC frequency-changeable compressor 1 In the heat exchanger that refrigerant enters in water tank 5 by oil eliminator 2, the first solenoid valve 3 and second solenoid valve 4 and condense heat release generation Domestic hot-water, reaches the entrance of electric expansion valve 9 through check valve 10 after the condensation of high pressure gaseous refrigerant, refrigerant is swollen by electronics Swollen valve 9 enters after throttling carries out heat convection with outdoor air in outdoor heat exchanger 8, commutate after refrigerant evaporation heat absorption by four-way Valve 7 enters gas-liquid separator 15, and liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant returns to DC frequency-changeable compressor 1 In compressed, complete domestic hot-water's mode.
In the above system course of work, there are the complementation of the distribution of energy and heat, energy distribution is by host to water Case and floor heating end are completed by reasonably controlling, and heat complementation is carried out between water tank and floor heating end, that is, work as water tank When middle hot water temperature reaches certain condition, extra heat is not needed, floor heating end can be transferred to, meeting floor heating load makes With;When the water temperature in water tank reaches set temperature, the heat supply of host is not needed, host only gives floor heating load to provide heat Amount.Similarly, when floor heating load is lower, required energy is less, and the extra heat in this part is transferred to hot water, full Demand of the sufficient domestic hot-water to heat.This heat transfer between hot water and floor heating end, i.e. heat is complementary, can be with It is realized by the control of reasonably optimizing.
General principle of design is: designing a clock on the controller, determines what hot water and floor heating used according to the time Priority.
For example, domestic hot-water is preferential in the 18:00-24:00 period, i.e., preferentially meet the heat of domestic hot-water's needs, only There is the heat (being indicated with than enthalpy) obtained when the water in water tank to reach certain value, such as reaching high specific enthalpy, (domestic hot-water sets It is corresponding than enthalpy to determine temperature) 80% when, carry out the transfer of heat, reduce the heat that host is supplied to Water in Water Tanks, transfer A part of heat is to floor heating end.When reaching the 90% of high specific enthalpy, the heat of supply is further decreased, shifts more heat Measure floor heating end.When reaching the 105% of high specific enthalpy, stop feed-tank heat supply.In short, domestic hot-water is preferential, full Under the premise of sufficient domestic hot-water, realize the heat distribution and complementation of domestic hot-water and floor heating end load, heat it is complementary by the The switch control of one solenoid valve 3 (small-bore) and second solenoid valve 4 (heavy caliber) is realized.
For example, in the 0:00-18:00 period, floor heating is preferential, when the water inlet of floor heating side and temperature difference of outlet water are less than the standard temperature difference 90% when, reduce host for the heat of feed-tank, preferentially meet floor heating workload demand;Water inlet and temperature difference of outlet water when floor heating side Less than the standard temperature difference 80% when, further decrease host for the heat of feed-tank, preferentially meet floor heating demand.
Concrete implementation process is as follows:
Define domestic hot-water's high specific enthalpy
Hot water enthalpy under domestic hot-water's set temperature, referred to as high specific enthalpy.
Water tank uses press-bearing water tank, guarantees that water tank can use under the premise of water is certain in the state for filling water Quantify the heat of domestic hot-water's needs than enthalpy, tank height is no more than 2m, therefore hydraulic pressure is less than 1MPa, looks into hot water and compares enthalpy Table is fitted using hot water is more corresponding than different temperatures in enthalpy table than enthalpy, obtains the ratio enthalpy of different water temperatures, and fitting is public Formula are as follows:
H=4.1802*tset+ 0.874 (kJ/kg), wherein H represents hot water than enthalpy, tsetRepresent water tank set temperature.
For example, water temperature sets 55 DEG C, the high specific enthalpy being calculated is 230.787kJ/kg;When the water in water tank obtains Heat when reaching the 80% of high specific enthalpy, calculating water temperature according to fitting formula is 44.0 DEG C, according to control program, works as water tank When the water temperature that temperature sensor detects reaches 44.0 DEG C, needs to reduce the heat of water tank supply, close the first solenoid valve at this time 3, open second solenoid valve 4;When the heat that the water in water tank obtains reaches the 90% of high specific enthalpy, according to fitting formula meter Calculating water temperature is 49.5 DEG C, is needed when the water temperature that water tank temperature sensor detects reaches 49.5 DEG C into one according to control program Step reduces the heat of supply, closes second solenoid valve 4, opens the first solenoid valve 3.
Define the rated load of floor heating end
Defining 1 floor heating end, (7 DEG C of dry-bulb temperatures of heat source side use the water outlet of 45 DEG C of side, water flow in declared working condition 0.172m3/ (hkW)) when heating capacity be 2800W, total rated load of all floor heating ends are as follows:
Qrate=∑ floor heating end number × 2800 (W), wherein QrateFor total rated load;
The floor heating side practical heat exchange amount of water are as follows: Qact=mcpΔ t=ρ VcpΔ t, wherein QactIt is changed for floor heating side with water is practical Heat, m are mass flow, CpFor the specific heat at constant pressure of water, △ t is that floor heating side passes in and out water temperature difference, and ρ is the density of water, and V is volume Flow;
Under the premise of certain water flow, work as Qact=QrateWhen, floor heating side workload demand is satisfied, and is defined at this time It is standard temperature difference △ t that floor heating side, which passes in and out water temperature difference,rate;Work as Qact< 90%Qrate, i.e., actual floor heating side passes in and out water temperature difference △ tact 90% △ t of <rate, at this point, reducing the heat supply of hot water side;Work as Qact< 80%Qrate, i.e., actual floor heating side disengaging Water temperature difference △ tact80% △ t of <rate, at this point, further decreasing the heat supply of hot water side.
Specific control process is as follows:
S1, domestic hot-water's mode;That is the controller power-on instruction that only receives the line control machine of water tank, the first solenoid valve 3 and Two solenoid valves 4 are opened, and third solenoid valve 6 and the 4th solenoid valve 11 are closed, and DC frequency-changeable compressor fan-out capability is according to setting Water temperature is controlled, and there is no the transfer of the heat of domestic hot-water and floor heating end and complementations.
S2, floor heating mode;That is the controller power-on instruction that only receives the line control machine of floor heating end, the first solenoid valve 3 and Two solenoid valves 4 are closed, and third solenoid valve 6 and the 4th solenoid valve 11 are opened, and DC frequency-changeable compressor is condensed according to certain target Temperature runs to control.
S3, domestic hot-water's mode of warming up;That is the controller power-on instruction and the floor heating end that receive the line control machine of water tank The power-on instruction of line control machine, control program determine that domestic hot-water is preferential or floor heating is preferential according to the time.
A, such as in domestic hot-water's preferential period when, i.e., system is existed simultaneously in the 18:00-24:00 period, system End operation is warmed up in hot water and at least 1 tableland, and water heating is preferential;
According to fitting formula calculate set water temperature under hot water high specific enthalpy, and attached drawing 5 show hot water heating and The switch state of the first solenoid valve 3 and second solenoid valve 4 in hot water temperature-fall period;
1. hot water temperature-rise period
When practical hot water is less than or equal to the 85% of high specific enthalpy than enthalpy, the first solenoid valve 3 and second solenoid valve 4 It opens, DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure.
When practical hot water is greater than the 85% of high specific enthalpy than enthalpy, and is less than or equal to 95%, the first solenoid valve 3 is closed It closes, second solenoid valve 4 is opened, and DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure.
When practical hot water is greater than the 95% of high specific enthalpy than enthalpy, and is less than or equal to 105%, the first solenoid valve 3 It opens, second solenoid valve 4 is closed, and DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure.
When practical hot water is greater than the 105% of high specific enthalpy than enthalpy, the first solenoid valve 3 and second solenoid valve 4 are closed, directly Stream frequency-changeable compressor fan-out capability is controlled according to certain goal pressure.
2. hot water temperature-fall period
When practical hot water is greater than the 100% of high specific enthalpy than enthalpy, the first solenoid valve 3 and second solenoid valve 4 are closed, directly Stream frequency-changeable compressor fan-out capability is controlled according to certain goal pressure, meets floor heating workload demand.
When practical hot water is greater than the 90% of high specific enthalpy than enthalpy, and is less than or equal to 100%, the first solenoid valve 3 It opens, second solenoid valve 4 is closed, and DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure, meets life Hot water and floor heating workload demand living.
When practical hot water is greater than the 80% of high specific enthalpy than enthalpy, and is less than or equal to 90%, the first solenoid valve 3 is closed It closes, second solenoid valve 4 is opened, and DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure, meets life Hot water and floor heating workload demand.
When practical hot water is less than or equal to the 80% of high specific enthalpy than enthalpy, the first solenoid valve 3 and second solenoid valve 4 It opens, DC frequency-changeable compressor fan-out capability is controlled according to certain goal pressure, meets domestic hot-water and floor heating load Demand.
B, such as in floor heating preferential period when, i.e., in the 0:00-18:00 period, but do not include 18:00, in system It exists simultaneously water heating and end operation is warmed up at least 1 tableland, floor heating is preferential;
Attached drawing 6 shows the first electricity during floor heating side disengaging water temperature difference rises and floor heating side disengaging water temperature difference declines The switch state of magnet valve 3 and second solenoid valve 4;
1. floor heating side passes in and out water temperature difference uphill process
When floor heating side, disengaging water temperature difference is less than or equal to the 85% of the standard temperature difference, and the first solenoid valve 3 and second solenoid valve 4 are closed It closes, DC frequency-changeable compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is greater than the 85% of the standard temperature difference, and is less than or equal to 95%, and the first solenoid valve 3 is opened It opens, second solenoid valve 4 is closed, and DC frequency-changeable compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is greater than the 95% of the standard temperature difference, and is less than or equal to 105%, and the first solenoid valve 3 closes It closes, second solenoid valve 4 is opened, and DC frequency-changeable compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is greater than the 105% of the standard temperature difference, and the first solenoid valve 3 and second solenoid valve 4 are opened, directly Stream frequency-changeable compressor is controlled according to certain goal pressure.
2. floor heating side, which passes in and out water temperature difference, declines process
When 100% of floor heating side disengaging water temperature difference more than or equal to the standard temperature difference, the first solenoid valve 3 and second solenoid valve 4 It opens, direct current compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is greater than or equal to the 90% of the standard temperature difference, and closes less than 105%, first solenoid valve 3 It closes, second solenoid valve 4 is opened, and DC frequency-changeable compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is greater than or equal to the 80% of the standard temperature difference, and opens less than 90%, first solenoid valve 3 It opens, second solenoid valve 4 is closed, and DC frequency-changeable compressor is controlled according to certain goal pressure;
When floor heating side, disengaging water temperature difference is less than the 80% of the standard temperature difference, and the first solenoid valve 3 and second solenoid valve 4 are closed, directly Stream frequency-changeable compressor is controlled according to certain goal pressure.
The upper only embodiments of the present invention, are not intended to restrict the invention.For those skilled in the art For, the invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention are equal Replacement, improvement etc., should all be included within scope of the presently claimed invention.

Claims (9)

1. a kind of heat step by step complementary floor heating, two alliance of hot water heat pump system, it is characterised in that: compressed including DC frequency-changing Machine (1), oil eliminator (2), water tank (5), four-way reversing valve (7), outdoor heat exchanger (8), floor heating side heat exchanger (13) and gas-liquid One end of separator (15), the DC frequency-changeable compressor (1) is connect with the first end of oil eliminator (2), in the water tank (5) Heat exchanger one end series connection the first solenoid valve (3) connect afterwards with the second end of oil eliminator (2), changing in the water tank (5) One end series connection second solenoid valve (4) of hot device is connect with the second end of oil eliminator (2) afterwards, and the of the four-way reversing valve (7) One end series connection third solenoid valve (6) is connect with the second end of oil eliminator (2) afterwards, one end and four of the outdoor heat exchanger (8) The 4th end connection of logical reversal valve (7), the other end of the outdoor heat exchanger (8) are connect with one end of electric expansion valve (9), institute The other end for stating electric expansion valve (9) is connect with one end of the 4th solenoid valve (11), the heat exchanger in the water tank (5) it is another End series connection check valve (10) is connect with one end of the 4th solenoid valve (11) afterwards, the other end series connection liquid of the 4th solenoid valve (11) Pipe shut-off valve (12) is connect with one end of floor heating side heat exchanger (13) afterwards, the other end series connection gas of floor heating side heat exchanger (13) Pipe shut-off valve (14) is connect with the second end of four-way reversing valve (7) afterwards, the third end series connection oil return capillary of the oil eliminator (2) Pipe (16) is connect with the other end of DC frequency-changeable compressor (1) afterwards, one end of the gas-liquid separator (15) and DC frequency-changing pressure The other end of contracting machine (1) connects, and the other end of the gas-liquid separator (15) is connect with the third end of four-way reversing valve (7).
2. heat according to claim 1 step by step complementary floor heating, two alliance of hot water heat pump system, it is characterised in that: High-voltage switch gear (18) is installed on the pipeline between the DC frequency-changeable compressor (1) and oil eliminator (2) and high-pressure passes Sensor (19).
3. heat according to claim 1 step by step complementary floor heating, two alliance of hot water heat pump system, it is characterised in that: Water tank temperature sensor (20) are installed in the water tank (5).
4. heat according to claim 1 step by step complementary floor heating, two alliance of hot water heat pump system, it is characterised in that: It is equipped on the water inlet pipe of floor heating side heat exchanger (13) inflow temperature sensor (21), floor heating side heat exchanger (13) Leaving water temperature sensors (22) are installed on outlet pipe.
5. heat according to claim 1 step by step complementary floor heating, two alliance of hot water heat pump system, it is characterised in that: Low tension switch (17) are installed on pipeline between the gas-liquid separator (15) and four-way reversing valve (7).
6. a kind of heat according to claim 1 step by step complementary floor heating, two alliance of hot water heat pump system control method, It is characterized in that, including following operating mode:
A, floor heating mode;
B, warm up domestic hot-water's mode;
C, domestic hot-water's mode.
7. heat according to claim 6 step by step complementary floor heating, two alliance of hot water heat pump system control method, It is characterized in that, under floor heating mode, successively passes through oil through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor (1) From device (2), third solenoid valve (6), four-way reversing valve (7) and tracheae shut-off valve (14) afterwards enter floor heating side heat exchanger (13) in Floor heating carries out heat convection with water, becomes the liquid refrigerants of medium temperature and medium pressure after the condensation heat release of high pressure gaseous refrigerant, in medium temperature The liquid refrigerants of pressure successively by liquid pipe shut-off valve (12), solenoid valve (11) and enters outdoor after electric expansion valve (9) throttling Heat convection is carried out with outdoor air in heat exchanger (8), becomes low-temp low-pressure after the liquid refrigerants evaporation endothermic of medium temperature and medium pressure The gas-liquid two-phase refrigerant of gas-liquid two-phase refrigerant, low-temp low-pressure enters in gas-liquid separator (15) through four-way reversing valve (7), and liquid is cold Matchmaker is deposited on gas-liquid separator (15) bottom, and gaseous coolant, which returns in DC frequency-changeable compressor (1), to be compressed, and completes floor heating mould Formula.
8. heat according to claim 6 step by step complementary floor heating, two alliance of hot water heat pump system control method, It is characterized in that, warms up under domestic hot-water's mode on ground, passed through through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor (1) It crosses oil eliminator (2), a part of refrigerant enters the heat exchanger in water tank (5) by the first solenoid valve (3) and second solenoid valve (4) In and condense heat release generate domestic hot-water, high pressure gaseous refrigerant condensation after through check valve (10) reach electric expansion valve (9) Entrance;Another part high pressure gaseous refrigerant is by third solenoid valve (6), four-way reversing valve (7) and tracheae shut-off valve (14) enter afterwards in floor heating side heat exchanger (13) and carry out heat convection with water with floor heating, after high pressure gaseous refrigerant condenses heat release Become the liquid refrigerants of medium temperature and medium pressure, the liquid refrigerants of medium temperature and medium pressure is after liquid pipe shut-off valve (12) and solenoid valve (11) and water The refrigerant of case (5) side converges, and refrigerant enters in outdoor heat exchanger (8) after electric expansion valve (9) throttle to carry out with outdoor air Heat convection becomes the gas-liquid two-phase refrigerant of low-temp low-pressure after refrigerant evaporation heat absorption, the gas-liquid two-phase refrigerant of low-temp low-pressure is through four Logical reversal valve (7) enter in gas-liquid separator (15), and liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant returns to direct current Frequency-changeable compressor is compressed in (1), is completed ground and is warmed up domestic hot-water's mode.
9. heat according to claim 6 step by step complementary floor heating, two alliance of hot water heat pump system control method, It is characterized in that, under domestic hot-water's mode, passes through oil through the compressed high pressure gaseous refrigerant of DC frequency-changeable compressor (1) In the heat exchanger entered in water tank (5) from device (2), the first solenoid valve (3) and second solenoid valve (4) and condense heat release generation life Hot water, reaches the entrance of electric expansion valve (9) through check valve (10) after the condensation of high pressure gaseous refrigerant, refrigerant is swollen by electronics Enter after swollen valve (9) throttling and carry out heat convection in outdoor heat exchanger (8) with outdoor air, by four-way after refrigerant evaporation heat absorption Reversal valve (7) enters gas-liquid separator (15), and liquid refrigerants is deposited on gas-liquid separator bottom, and gaseous coolant returns to DC frequency-changing Compressor is compressed in (1), completes domestic hot-water's mode.
CN201910291440.XA 2019-04-12 2019-04-12 Heat step by step complementary floor heating, two alliance of hot water heat pump system and control method Pending CN110056934A (en)

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