CN111707004B - Module combination formula air source heat pump set control system - Google Patents

Module combination formula air source heat pump set control system Download PDF

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Publication number
CN111707004B
CN111707004B CN202010450986.8A CN202010450986A CN111707004B CN 111707004 B CN111707004 B CN 111707004B CN 202010450986 A CN202010450986 A CN 202010450986A CN 111707004 B CN111707004 B CN 111707004B
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turning
heat pump
water
air source
source heat
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CN111707004A (en
Inventor
赵密升
赵林
张勇
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Guangdong New Energy Technology Development Co Ltd
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Guangdong New Energy Technology Development Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • F24H4/04Storage heaters

Abstract

The invention discloses a module combined type air source heat pump unit control system, which comprises a plurality of heat storage water tanks, wherein an internal circulation water pump is installed on a cold water inlet pipe, the control system also comprises a control module, a driving module and an interaction module, the control module is used for controlling the driving module to operate, the control module is used for acquiring input and output information of the interaction module, and the driving module drives the air source heat pump unit to work; and a temperature sensor is arranged at the water outlet end of the cold water inlet pipe in the coil water tank. The invention comprises a quick heating mode and a normal mode, when a user selects the quick heating mode, hot water can be quickly obtained, when the user does not have a hot water demand at present, the user can set the air source heat pump unit to be in an automatic mode, at the moment, the internal circulation water pump can be started according to set conditions, the combined hot water storage tank is completely heated to the set temperature, and when the user has the hot water demand, sufficient hot water can be obtained.

Description

Module combination formula air source heat pump set control system
Technical Field
The invention relates to the technical field of heat pumps, in particular to a control system of a module combined type air source heat pump unit.
Background
The existing air source heat pump system has a single operation mode, can not well realize the operation and starting control of the circulating water pump, has poor user experience, and can not realize the function of quick heating when hot water is used.
To solve this problem, the present invention is hereby proposed.
Disclosure of Invention
The invention aims to provide a module combined type air source heat pump unit control system which comprises a quick heating mode and a normal mode.
The purpose of the invention can be realized by the following technical scheme:
a module combined type air source heat pump unit control system comprises an air source heat pump host system, a compressor, a condenser, an evaporator, a throttling device and a coil pipe water tank, the air source heat pump host system is connected with the coil pipe water tank through a pipeline, the air source heat pump unit also comprises a plurality of heat storage water tanks, the coil water tank and the heat storage water tank are connected through a circulating pipeline, the coil water tank is connected with a cold water inlet pipe and a hot water outlet pipe, an internal circulation water pump is installed on the cold water inlet pipe, the control system further comprises a control module, a driving module and an interaction module, the control module is used for controlling the operation of the driving module, the control module is used for acquiring input and output information of the interaction module, and the driving module drives the air source heat pump unit to work; the water outlet end of the cold water inlet pipe in the coil pipe water tank is provided with a temperature sensor for measuring the water inlet temperature T1, and the control module is connected with the temperature sensor and can acquire the water inlet temperature value measured by the temperature sensor.
Furthermore, a stop valve and an electric valve are respectively arranged on the cold water inlet pipe and two sides of the internal circulation water pump, and the stop valve is arranged on the other side of the electric valve.
Furthermore, a user sets the operation modes of the module combined type air source heat pump unit through the interaction module, wherein the operation modes comprise a quick heating mode and a normal mode.
Furthermore, in the quick heating mode, the water pump is not started by default, and the air source heat pump unit can quickly heat the hot water in the coil water tank.
Further, when the user does not have the hot water demand at present, the user can set up air source heat pump set unit to automatic mode, and internal recycle water pump can start according to the settlement condition this time, guarantees that the heat storage water tank of combination is whole to be heated to the settlement temperature, when the user has the hot water demand, can have sufficient hot water volume.
Further, the control method of the module combined type air source heat pump unit control system is as follows: s1, acquiring the inlet water temperature T1;
s2, judging whether T1 is less than or equal to a preset temperature TP1, if so, turning to S3, and if not, turning to S4;
s3, starting the heat pump unit, setting the heat pump unit state flag S as on, and turning to S4;
s4, judging whether the T1 is greater than or equal to the preset temperature TP2, if so, turning to S5, and if not, turning to S6;
s5, stopping the heat pump unit, setting the heat pump unit state flag S as off, and turning to S6;
s6, judging whether the user sets a quick heating mode, if so, turning to S7, if not, turning to S8;
s7, the internal circulation water pump is not started;
s8, judging whether the continuous closing time TD of the internal circulation water pump is more than or equal to the preset time TTD, if so, turning to S9, and if not, turning to S7;
s9, judging whether the heat pump set state flag S is on, if so, turning to S10, and if not, turning to S7;
s10, starting the internal circulating water pump, and turning to S11;
s11: judging whether the continuous running time TW of the inner circulating water pump is greater than the preset time TTD, if so, turning to S12, and if not, turning to S11;
s12: judging whether the state flag S of the heat pump unit is closed or the heat pump unit fails, if so, turning to S13, and if not, turning to S14;
s13: closing the internal circulating water pump;
s14: judging whether the inlet water temperature T1 is less than or equal to a preset temperature TP3, if so, turning to S13, and if not, turning to S15;
s15: and (4) judging whether the inlet water temperature T1 is greater than or equal to the preset temperature TP4, if so, turning to S12, and if not, turning to S11.
Preferably, the preset temperature TP1 is set to 50 ℃ and the preset temperature TP2 is set to 55 ℃.
Preferably, the preset time TTD is set to 5 min.
Preferably, the preset temperature TP3 is set to TS-2 × DT 1.
Preferably, the preset temperature TP4 is TS-DT 2.
The invention has the beneficial effects that:
the combined hot water storage tank comprises a quick heating mode and a normal mode, when a user selects the quick heating mode, hot water can be quickly obtained, when the user does not have a hot water demand at present, the air source heat pump unit can be set to be in an automatic mode, at the moment, the internal circulation water pump can be started according to set conditions, the combined hot water storage tank is enabled to be completely heated to a set temperature, and when the user has the hot water demand, sufficient hot water can be obtained. .
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a block diagram of a multi-mode air source heat pump control system of the present invention.
Fig. 2 is a flow chart of a multi-mode air source heat pump control method of the present invention.
Reference numerals:
1-an air source heat pump host system; 2-coil water tank; 3-heat storage water tank; 4-a circulation pipeline; 41-water outlet temperature sensor; 5-cold water inlet pipe; 51-inlet water temperature sensor; 6-hot water outlet pipe; 7-internal circulation water pump; 8, electrically operated valve; 9-a stop valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1-2, a module combination formula air source heat pump unit control system, air source heat pump unit includes air source heat pump host system 1, compressor, condenser, evaporimeter, throttling arrangement and coil pipe water tank 2, air source heat pump host system 1 is connected with coil pipe water tank 2 through the pipeline, still includes a plurality of heat storage water tank 3, be connected through circulation pipeline 4 between coil pipe water tank 2 and the heat storage water tank 3 and between heat storage water tank 3 and the heat storage water tank 3, coil pipe water tank 2 is connected with cold water inlet tube 5 and hot water outlet pipe 6, install internal circulation water pump 7 on the cold water inlet tube 5, cold water inlet tube 5 is last, 7 both sides of internal circulation water pump still are equipped with stop valve 9 and motorised valve 8 respectively, stop valve 9 is installed to the opposite side of motorised valve 8. The cold water inlet pipe 5 is a passage for cold water to enter the coil water tank 2, and the hot water outlet pipe 6 is a passage for hot water to flow out of the coil water tank 2. The module combined type air source heat pump unit control system further comprises a control module, a driving module and an interaction module, wherein the control module is used for controlling the driving module to run, the control module is used for acquiring input and output information of the interaction module, and the driving module drives the air source heat pump unit to work. The water outlet end of the cold water inlet pipe 5 in the coil pipe water tank 2 is provided with an inlet water temperature sensor 51 for measuring inlet water temperature T1, the control module is connected with the inlet water temperature sensor 51 and can acquire the inlet water temperature value measured by the temperature sensor. And a water outlet temperature sensor 41 is arranged on the circulating pipeline 4 in the coil water tank 2.
The user can set up module combination formula air source heat pump unit's operational mode through interactive module, the operational mode includes fast hot mode and normal mode, in the time of fast hot mode, the water pump is acquiescently not opened, air source heat pump unit can the hot water of quick heating coil pipe water tank, the user can be very quick obtains hot water, and when the user does not have the hot water demand at present, the user can set up air source heat pump unit to automatic mode, internal circulation water pump can start according to setting for the condition at this moment, guarantee that the heat storage water tank of combination is whole to heating to the settlement temperature, when the user has the hot water demand, can have sufficient hot water volume.
The control method of the module combined type air source heat pump unit control system comprises the following steps:
s1, acquiring the inlet water temperature T1, and turning to S2;
and the water outlet end of the cold water inlet pipe 5 in the coil water tank 2 is provided with an inlet water temperature sensor 51 for measuring the inlet water temperature T1, and the control module acquires the inlet water temperature T1.
S2, judging whether T1 is less than or equal to a preset temperature TP1, if so, turning to S3, and if not, turning to S4;
preferably, the preset temperature TP1 is set to 50 ℃.
S3, starting the heat pump unit, setting the heat pump unit state flag S as on, and turning to S4;
s4, judging whether the T1 is greater than or equal to the preset temperature TP2, if so, turning to S5, and if not, turning to S6;
preferably, the preset temperature TP2 is set to 55 ℃.
S5, stopping the heat pump unit, setting the heat pump unit state flag S as off, and turning to S6;
s6, judging whether the user sets a quick heating mode, if so, turning to S7, if not, turning to S8;
s7, the internal circulation water pump is not started;
s8, judging whether the continuous closing time TD of the internal circulation water pump is more than or equal to the preset time TTD, if so, turning to S9, and if not, turning to S7;
preferably, the preset time TTD is set to 5 min.
S9, judging whether the heat pump set state flag S is on, if so, turning to S10, and if not, turning to S7;
s10, starting the internal circulating water pump, and turning to S11;
s11: judging whether the continuous running time TW of the inner circulating water pump is greater than the preset time TTD, if so, turning to S12, and if not, turning to S11;
s12: judging whether the state flag S of the heat pump unit is closed or the heat pump unit fails, if so, turning to S13, and if not, turning to S14;
s13: closing the internal circulating water pump;
s14: judging whether the inlet water temperature T1 is less than or equal to a preset temperature TP3, if so, turning to S13, and if not, turning to S15;
s15: and (4) judging whether the inlet water temperature T1 is greater than or equal to the preset temperature TP4, if so, turning to S12, and if not, turning to S11.
Preferably, the preset temperature TP3 is set to TS-2 × DT1, TS is set to the upper heating limit temperature of the air source heat pump unit, and can be set by a person skilled in the art, and DT1 is represented as the temperature difference between inlet and outlet water, and can be set by a person skilled in the art, preferably, 5 ℃.
S14: and (4) judging whether the inlet water temperature T1 is greater than or equal to the preset temperature TP4, if so, turning to S12, and if not, turning to S10.
Preferably, the preset temperature TP4 is set to TS-DT2, DT2 is indicated as water pump shut-off return difference, which can be set by the person skilled in the art, preferably to 3 ℃.
Through the steps, the quick water heating is realized in the quick heating mode, and the starting and stopping of the circulating water pump are controlled in the automatic mode, so that the energy conservation and the ultra-large continuous water yield are realized.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (5)

1. The utility model provides a module combination formula air source heat pump set control system, air source heat pump set includes air source heat pump host system (1), compressor, condenser, evaporimeter, throttling arrangement and coil pipe water tank (2), air source heat pump host system (1) is connected with coil pipe water tank (2) through the pipeline, its characterized in that, air source heat pump set still includes a plurality of heat storage water tank (3), be connected through circulation line (4) between coil pipe water tank (2) and heat storage water tank (3) and between heat storage water tank (3), coil pipe water tank (2) are connected with cold water inlet tube (5) and hot water outlet pipe (6), install internal circulation water pump (7) on cold water inlet tube (5), control system still includes control module, drive module and interactive module, the control module is used for controlling the operation of the driving module, the control module is used for acquiring input and output information of the interaction module, and the driving module drives the air source heat pump unit to work; the water outlet end of the cold water inlet pipe (5) in the coil water tank (2) is provided with a temperature sensor for measuring the inlet water temperature T1, and the control module is connected with the temperature sensor and can acquire the inlet water temperature value measured by the temperature sensor;
the control method of the module combined type air source heat pump unit control system comprises the following steps:
s1, acquiring the inlet water temperature T1;
s2, judging whether T1 is less than or equal to a preset temperature TP1, if so, turning to S3, and if not, turning to S4;
s3, starting the heat pump unit, setting the heat pump unit state flag S as on, and turning to S4;
s4, judging whether the T1 is greater than or equal to the preset temperature TP2, if so, turning to S5, and if not, turning to S6;
s5, stopping the heat pump unit, setting the heat pump unit state flag S as off, and turning to S6;
s6, judging whether the user sets a quick heating mode, if so, turning to S7, if not, turning to S8;
s7, the internal circulation water pump is not started;
s8, judging whether the continuous closing time TD of the internal circulation water pump is more than or equal to the preset time TTD, if so, turning to S9, and if not, turning to S7;
s9, judging whether the heat pump set state flag S is on, if so, turning to S10, and if not, turning to S7;
s10, starting the internal circulating water pump, and turning to S11;
s11: judging whether the continuous running time TW of the inner circulating water pump is greater than the preset time TTD, if so, turning to S12, and if not, turning to S11;
s12: judging whether the state flag S of the heat pump unit is closed or the heat pump unit fails, if so, turning to S13, and if not, turning to S14;
s13: closing the internal circulating water pump;
s14: judging whether the inlet water temperature T1 is less than or equal to a preset temperature TP3, if so, turning to S13, and if not, turning to S15;
s15: and (4) judging whether the inlet water temperature T1 is greater than or equal to the preset temperature TP4, if so, turning to S12, and if not, turning to S11.
2. The control system of the modular combined air-source heat pump unit as claimed in claim 1, wherein the predetermined temperature TP1 is set to 50 ℃ and the predetermined temperature TP2 is set to 55 ℃.
3. The modular combined air source heat pump unit control system of claim 1, wherein the predetermined time TTD is set to 5 min.
4. The modular combined air source heat pump unit control system of claim 1, wherein the predetermined temperature TP3 is set to TS-2 x DT 1.
5. The modular combined air source heat pump unit control system of claim 1,
the preset temperature TP4 is TS-DT 2.
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