CN108105953B - A kind of air-conditioner control system and its control method - Google Patents
A kind of air-conditioner control system and its control method Download PDFInfo
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- CN108105953B CN108105953B CN201711051074.8A CN201711051074A CN108105953B CN 108105953 B CN108105953 B CN 108105953B CN 201711051074 A CN201711051074 A CN 201711051074A CN 108105953 B CN108105953 B CN 108105953B
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 239000003507 refrigerant Substances 0.000 claims abstract description 31
- 238000004378 air conditioning Methods 0.000 claims abstract description 26
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
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- Engineering & Computer Science (AREA)
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The present invention provides a kind of air-conditioner control system and its control method, which includes heat exchanger and auxiliary thermal source circulator；Heat exchanger includes fin and the heat exchanger tube that is arranged in fin；Heat exchanger tube includes outer heat exchanger tube and the interior heat exchanger tube that is arranged in outer heat exchanger tube, forms the outer heat exchanger tube of circulation refrigerant medium and the interior heat exchanger tube of auxiliary thermal source working medium；Auxiliary thermal source circulator is connected to interior heat exchanger tube, so that auxiliary thermal source working medium circulation between heat exchanger and auxiliary thermal source circulator.Utilize air-conditioner control system provided by the invention and corresponding control method, indoor condensed water can be introduced into the interior heat exchanger tube of the auxiliary thermal source working medium in outdoor unit heat exchanger in air conditioner refrigerating, reduce air conditioner energy loss, improve the refrigerating capacity and efficiency of air-conditioning, power and energy saving；Can be in air-conditioning heating, the heat exchanger tube in outdoor unit heat exchanger accesses auxiliary thermal source working medium, improves heating capacity, and then promote the ability and efficiency of air conditioner.
Description
Technical Field
The present invention relates to air conditioning systems, and more particularly, to an air conditioning control system and a control method thereof.
Background
The air conditioner is a common electric appliance used for adjusting the temperature of a local space in daily life, and the air conditioner is more and more widely applied by people due to the development of science and technology at any time. The temperature regulating principle of the air conditioner mainly utilizes reverse Carnot circulation, a working medium absorbs heat from a low-temperature heat source and emits heat from a high-temperature heat source, and the aim of refrigeration or heating is fulfilled through continuous heat absorption and heat release circulation.
In the prior art, only two working media, namely a refrigerant working medium and air, exchange heat in the process of air conditioner refrigeration or heating, other auxiliary heat source working media cannot be utilized, and the heat exchange quantity and the heat exchange efficiency are limited.
Disclosure of Invention
An object of the present invention is to provide an air conditioning control system and a control method thereof, which at least solve some of the drawbacks of the prior art.
A further object of the present invention is to improve the heat exchange capacity and heat exchange efficiency.
Another further object of the invention is to improve the capacity and energy efficiency of the complete air conditioner.
In one aspect, the present invention provides an air conditioning control system, comprising: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; wherein,
the heat exchanger comprises fins and heat exchange tubes penetrating through the fins;
the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating refrigerant working media and the inner heat exchange tubes for assisting heat source working media are formed;
the auxiliary heat source circulator is communicated with the inner heat exchange tube so that the auxiliary heat source working medium circulates between the heat exchanger and the auxiliary heat source circulator.
Preferably, the end part of the outer heat exchange tube is conical and is connected with the outer wall of the inner heat exchange tube in a sealing way; the conical wall surface of the outer heat exchange tube is provided with an inlet and an outlet for circulating refrigerant working medium.
Preferably, a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube to measure the temperature of the coil of the inner heat exchange tube;
preferably, the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor to measure the temperature of the auxiliary heat source working medium at the outlet.
Preferably, the auxiliary heat source circulator comprises a heating chamber for heating the auxiliary heat source working medium; and a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature.
In another aspect, the present invention provides a control method of an air conditioning control system, wherein the air conditioning control system includes: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; the heat exchanger comprises fins and heat exchange tubes penetrating through the fins; the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating a refrigerant working medium and the inner heat exchange tubes for circulating an auxiliary heat source working medium are formed; the end part of the outer heat exchange tube is a cone and is connected with the outer wall of the inner heat exchange tube in a sealing way; an inlet and an outlet for circulating refrigerant are arranged at the end part of the cone of the outer heat exchange tube; a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube to measure the temperature of the coil of the inner heat exchange tube; the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor for measuring the temperature of the auxiliary heat source working medium at the outlet;
the auxiliary heat source circulator is communicated with the inner heat exchange tube; the auxiliary heat source circulator comprises a heating chamber for heating an auxiliary heat source working medium; a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature;
and the control method comprises:
starting the refrigerator, and detecting the outdoor temperature through a third temperature sensor;
under the condition that the outdoor temperature is greater than or equal to a preset environment high-temperature threshold value, starting an auxiliary heat source circulating machine, and detecting the temperature of an auxiliary heat source working medium at the outlet of the inner heat exchange tube through a second temperature sensor;
under the condition that the temperature of the auxiliary heat source working medium is smaller than a preset water temperature threshold value, a water outlet valve of the heat exchanger is closed, the auxiliary heat source working medium is circulated in the heat exchanger, and the temperature of a coil pipe of a heat exchange pipe in the heat exchanger is detected through a first temperature sensor;
and under the condition that the temperature of the coil of the heat exchange tube in the heat exchanger is less than a preset coil temperature threshold value, the auxiliary heat source circulating machine stops working after delaying for a plurality of seconds.
Preferably, when the temperature of the auxiliary heat source working medium is greater than or equal to a preset water temperature threshold, the auxiliary heat source working medium with the temperature less than the preset water temperature threshold is introduced, and the temperature of the auxiliary heat source working medium at the outlet of the heat exchanger is detected.
Preferably, the exhaust temperature of the air conditioner compressor is detected, and the auxiliary heat source circulating machine is stopped after delaying for several seconds under the condition that the exhaust temperature is smaller than a preset exhaust temperature threshold value.
In another aspect, the present invention further provides a control method of an air conditioning control system, wherein the air conditioning control system includes: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; wherein,
the heat exchanger comprises fins and heat exchange tubes penetrating through the fins; the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating a refrigerant working medium and the inner heat exchange tubes for circulating an auxiliary heat source working medium are formed; the end part of the outer heat exchange tube is a cone and is connected with the outer wall of the inner heat exchange tube in a sealing way; an inlet and an outlet for circulating refrigerant are arranged at the end part of the cone of the outer heat exchange tube; a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube to measure the temperature of the coil of the inner heat exchange tube; the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor for measuring the temperature of the auxiliary heat source working medium at the outlet;
the auxiliary heat source circulator is communicated with the inner heat exchange tube; the auxiliary heat source circulator comprises a heating chamber for heating an auxiliary heat source working medium; a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature;
and the control method comprises:
heating and starting up, and detecting the outdoor temperature through a third temperature sensor;
under the condition that the outdoor temperature is less than or equal to a preset environment low-temperature threshold value, starting an auxiliary heat source circulator, and detecting the temperature of an auxiliary heat source working medium at the outlet of an inner heat exchange tube through a second temperature sensor;
when the temperature of the auxiliary heat source working medium is greater than a preset first temperature threshold value, closing a water outlet valve of the heat exchanger to enable the auxiliary heat source working medium to circulate in the heat exchanger;
and closing the auxiliary heat source circulating machine after the heating of the air conditioner is stopped.
Preferably, after the temperature of the auxiliary heat source working medium is less than or equal to a preset first temperature threshold, the heating chamber heats the auxiliary heat source working medium to a preset second temperature threshold, then the auxiliary heat source working medium is sent into the heat exchange tube in the heat exchanger for circulation, and the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube is detected through the second temperature sensor.
Preferably, after the temperature of the auxiliary heat source working medium is greater than a preset first temperature threshold, the heating chamber stops heating, and the auxiliary heat source working medium circulates in the heat exchanger.
The air conditioner control system is provided with the auxiliary heat source circulator which is used for conveying the auxiliary heat source working medium to the heat exchanger, so that the heat exchange efficiency and the heat exchange quantity of the heat exchanger of the air conditioner outdoor unit can be improved.
Furthermore, the invention provides a control method of an air conditioner control system, which can introduce indoor condensed water into an inner heat exchange tube of an auxiliary heat source working medium in an outdoor unit heat exchanger during air conditioner refrigeration, reduce the energy loss of the air conditioner, improve the refrigeration capacity and energy efficiency of the air conditioner, and save electricity and energy.
Further, the invention provides a control method of an air conditioner control system, which can access an auxiliary heat source working medium into a heat exchange tube in an outdoor unit heat exchanger during heating of an air conditioner, so that the heating capacity is improved, and further, the capacity and the energy efficiency of the whole air conditioner are improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a heat exchanger in an air conditioning control system according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a heat exchange tube of the heat exchanger shown in FIG. 1;
FIG. 3 is a schematic diagram of an air conditioning refrigeration control system;
FIG. 4 is a flow chart of a control method of the air conditioning refrigeration control system;
FIG. 5 is a schematic diagram of an air conditioning heating control system;
fig. 6 is a flowchart of a control method of the air conditioning and heating control system.
Detailed Description
Fig. 1 is a schematic configuration diagram of a heat exchanger in an air conditioning control system for which the heat exchanger is one of its main components according to an embodiment of the present invention. As shown in fig. 1, the tube-in-tube finned heat exchanger 100 provided by the present invention comprises fins, and heat exchange tubes 110 are arranged in the fins. The cold and hot working mediums flow through the heat exchange tubes 110 of the heat exchanger 100 to exchange heat.
Fig. 2 is a schematic structural diagram of a heat exchange tube 110 of the heat exchanger 100 in fig. 1, and as can be seen from fig. 2, the heat exchange tube 110 includes an outer heat exchange tube 112, a concentric inner heat exchange tube 111 is disposed in the outer heat exchange tube 112, the outer heat exchange tube 112 for circulating a refrigerant and the inner heat exchange tube 111 for circulating an auxiliary heat source working medium are formed, and a cold working medium and a hot working medium perform convective heat exchange in the inner heat exchange tube 112 and the outer heat exchange tube 112.
In one embodiment, the end of the outer heat exchange tube 112 of the heat exchanger 100 is designed as a cone, and is closely connected with the outer wall of the inner heat exchange tube 111; furthermore, the conical wall surface of the outer heat exchange tube 112 is provided with inlet and outlet ports (113 and 114) for circulating the refrigerant, and the inlet and outlet ports (113 and 114) may or may not protrude from the conical surface.
Further, a first temperature sensor is arranged outside the outer heat exchange tube 112 and on the outer wall of the outlet 114 of the inner heat exchange tube 111, and is used for measuring the coil temperature of the inner heat exchange tube 111; and a second temperature sensor is arranged on the inner wall of the outlet 114 of the inner heat exchange tube 111 and used for measuring the temperature of the auxiliary heat source working medium at the outlet 114.
In the present invention, the important equipment associated with the tube-in-tube finned heat exchanger 100 is an auxiliary heat source circulator 200, which includes a filter, a softening chamber, a circulation pump, a drain pump, a heating chamber, and an electronic control module inside. The heating chamber can be divided into an electric heating chamber and a gas combustion chamber due to a heating source. The former uses an electric heating tube to heat an internal water source and is mainly used for small-scale air conditioners; the latter utilizes the combustion heat of gas in the combustion chamber to heat the water source passing through it, is equivalent to gas water heater, is mainly used for large-scale air conditioner.
The outside of the auxiliary heat source circulator 200 is provided with a third temperature sensor for measuring an outdoor temperature.
The air conditioner control system of the invention can improve the heat exchange efficiency and the heat exchange quantity of the heat exchanger of the air conditioner outdoor unit because the auxiliary heat source circulator 200 is arranged to convey the auxiliary heat source working medium to the heat exchanger 100.
Fig. 3 is a schematic diagram of an air-conditioning refrigeration system, when an air conditioner is refrigerating, the temperature of condensed water generated by an evaporator 300 of an indoor unit is generally low, and is about 10 to 18 ℃, the condensed water is introduced into an inner heat exchange tube 111 of a heat exchanger 100 through a valve 1 of an auxiliary heat source circulator 200, and when the condensed water is insufficient or the temperature is not reached, low-temperature make-up water can be introduced to exchange heat with a refrigerant working medium of an outer heat exchange tube 112, so that the energy loss of the air conditioner can be reduced, the refrigeration capacity and energy efficiency of the air conditioner can be improved, and the energy saving and the power saving are realized. If the condensed water is not completely volatilized, the condensed water is discharged into the chassis of the outer machine through the water outlet of the outer machine through the valve 2.
The auxiliary heat source circulator 200 is provided with a drain port, and when the auxiliary heat source circulator 200 is closed, an auxiliary heat source working medium (generally, water) can be drained from the drain port.
In the refrigeration process, the flow path of the refrigerant medium is the same as that in the prior art, see the dotted line portion of fig. 3, and in the refrigeration process, the compressor 400 sucks the low-temperature and low-pressure refrigerant medium steam of the evaporator 300, compresses the refrigerant medium steam into high-temperature and high-pressure refrigerant medium gas, and discharges the refrigerant medium gas into the heat exchanger 100 of the outdoor unit through the four-way valve 500.
Under the condition of unchanged pressure, the high-temperature and high-pressure refrigerant working medium gas is cooled by a cooling medium (air) in the heat exchanger 100, releases heat, reduces the temperature, is further condensed into liquid, and is discharged from the heat exchanger 100. In the present invention, the cooling medium further includes an auxiliary heat source working medium provided by the auxiliary heat source circulator 200, and the auxiliary heat source working medium in the refrigeration process includes condensed water discharged from the evaporator 300 and low-temperature supplementary water.
The high-pressure refrigerant working medium liquid is subjected to the pressure reduction effect of the throttling device 600, so that part of the refrigerant working medium liquid is vaporized, latent heat of vaporization is absorbed, the temperature is reduced, and the refrigerant working medium liquid becomes low-pressure and low-temperature wet steam (mostly liquid) and enters the evaporator 300.
In the evaporator 300, the refrigerant working medium absorbs heat of the cooled medium (air) to evaporate and vaporize under the condition of constant pressure, and the vapor which is changed into low-temperature and low-pressure vapor is sucked away by the compressor 400.
The invention also provides a control method of the air-conditioning refrigeration control system, and fig. 4 is a flow chart of the control method of the refrigeration control system according to an embodiment of the invention, and the control method comprises the following steps:
step S402, refrigerating and starting up;
step S404, detecting whether the outdoor temperature is more than or equal to Tc;
step S406, starting the auxiliary heat source circulation machine 200 when the outdoor temperature is equal to or higher than Tc;
step S408, after the auxiliary heat source circulator 200 is started, detecting whether the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is more than or equal to Twf-c;
step S410, when the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is more than or equal to Twf-c, introducing make-up water with the temperature less than Twf-c;
step S412, detecting whether the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is less than Twf-c again;
step S414, when the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is less than Twf-c, the auxiliary heat source working medium in the heat exchanger 100 is in closed circulation;
step S416, detecting that the exhaust temperature of the compressor 400 is less than T0-c or the temperature of a coil pipe at the outlet 114 of a heat exchange pipe 111 in the heat exchanger 100 is less than T1-c; if the exhaust temperature of the compressor 400 is greater than or equal to T0-c or the temperature of the coil pipe at the outlet 114 of the heat exchange pipe 111 in the heat exchanger 100 is greater than or equal to T1-c, returning to execute the step S406;
in step S418, the auxiliary heat source circulation machine 200 is stopped after a delay of several seconds.
When the above flow process is performed, when the compressor 400 is abnormally stopped or a remote controller stop signal is received, step S418 is immediately performed.
In step S404, the outdoor temperature is detected by the third temperature sensor outside the auxiliary heat source cycle machine 200, and it is determined whether or not the outdoor temperature is equal to or higher than Tc.
In the control flow of the refrigeration system of the embodiment, the measurement of the temperature of the auxiliary heat source working medium at the water outlet of the inner heat exchange tube 111 depends on the second temperature sensor arranged inside the outlet 114 of the inner heat exchange tube 111.
In step S416, the discharge temperature of the compressor 400 is detected by the first temperature sensor disposed outside the outer heat exchange tube 112 and on the outer wall of the outlet 114 of the inner heat exchange tube 111.
Fig. 5 is a schematic diagram of an air conditioning and heating system, in which, during air conditioning and heating, an auxiliary heat source circulator 200 delivers an auxiliary heat source working medium, which may be make-up water, from a solar water heater or other heat source equipment to exchange heat with a refrigerant working medium of an outer heat exchange pipe 112 through a valve 1 to an inner heat exchange pipe 111 of a heat exchanger 100, so as to improve heating capacity. Due to the addition of the auxiliary heat source working medium, the frosting of the outdoor unit heat exchanger 100 can be slowed down or even avoided at a certain temperature (such as 2 ℃), and the good heating capacity can be achieved in an ultralow temperature environment.
When the defrosting procedure needs to be started, the condensed water generated by defrosting can circularly flow into the auxiliary heat source circulator 200 to be used as make-up water, and can also be directly discharged into an outer machine chassis through an outer machine water outlet through the valve 2.
In one embodiment, in the heating mode, a strong heat function key is added, after the function is started, the auxiliary heat source circulating pump is started, and the auxiliary heat source working medium enters the small pipe to circulate, so as to provide a heat source for the air conditioner outdoor unit together with outdoor air.
In another embodiment, in the heating mode, a frost-free mode is added (the operation condition above 0 ℃ can be opened, otherwise the opening cannot be controlled), the frosting of the heat exchanger 100 needs a certain time to accumulate, the heat exchange tubes 111 in the heat exchanger 100 are opened for circulation before the actual frosting, the auxiliary heat source working medium supplies heat to the outdoor heat exchanger 100, and the heat exchange tubes 111 in the heat exchanger 100 are operated at intervals for circulation, so that the outer surface of the heat exchanger 100 is in a frost-free covering state.
The inner heat exchange tube 111 is circularly provided with a coil temperature sensor for detecting the temperature Tpa of the coil in real time, when the detected Tpa reaches a set temperature point Tp1, an air-conditioning electric control program controls an auxiliary heat source circulating pump to start the circulation of the inner heat exchange tube 111, and when the temperature of the coil reaches Tp2, the circulation operation of the inner heat exchange tube 111 is stopped.
In the heating process, the flow path of the refrigerant working medium is the same as that in the prior art, see the dotted line part of fig. 5, the flow direction of the refrigerant working medium is switched by the four-way valve 500, the state of the refrigerant working medium is just opposite to that in the refrigeration process in the circulation process, and the refrigeration process is referred to, and details are not described herein.
Further, the present invention also provides a control method of an air conditioner heating control system, and fig. 6 is a flowchart of a control method of a heating control system according to another embodiment of the present invention, where the control method includes:
step S602, starting up the air conditioner;
step S604, detecting whether outdoor temperature is less than or equal to Th;
step S606, when the outdoor temperature is equal to or lower than Th, the auxiliary heat source cycle machine 200 is started;
step S608, after the auxiliary heat source circulator 200 is started, whether the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is less than or equal to Twf-h1 is detected;
step S610, when the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is less than or equal to Twf-h1, heating the supplementing water to a temperature above Twf-h2, and sending the supplementing water into the heat exchanger 100 for circulation;
step S612, detecting whether the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is higher than Twf-h1 again;
step S614, when the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is higher than Twf-h1, the auxiliary heat source working medium in the heat exchanger 100 is in closed circulation;
in step S616, the auxiliary heat source cycle machine 200 is stopped after the heating shutdown.
When the above process is executed, step S616 is executed immediately when a signal indicating that the remote controller is forcibly exited, stopped, switched to the mode, or a fault signal transmitted from the internal/external unit electronic control board is received.
In step S604, a third temperature sensor is provided outside the auxiliary heat source cycle machine 200 for detecting the outdoor temperature.
In the heating process control of the present embodiment, the temperature of the auxiliary heat source working medium at the water outlet of the heat exchange tube 111 in the heat exchanger 100 is detected by using the second temperature sensor disposed on the inner wall of the outlet 114 of the inner heat exchange tube 111.
When step S606 is executed, the auxiliary heat source cycle machine 200 is started except when the outdoor temperature satisfies Th or less; forced activation may also be performed using a remote control.
In step S610, the supplementary heating water is heated in the heating chamber of the auxiliary heat source circulation machine 200, and the heating source may be an electric heating chamber or a gas combustion chamber. The former uses an electric heating tube to heat an internal water source and is mainly used for small-scale air conditioners; the latter utilizes the combustion heat of gas in the combustion chamber to heat the water source passing through it, is equivalent to gas water heater, is mainly used for large-scale air conditioner.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (7)
1. An air conditioning control system comprising: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; wherein,
the heat exchanger comprises fins and heat exchange tubes penetrating the fins;
the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating refrigerant working media and the inner heat exchange tubes for assisting heat source working media are formed; the end part of the outer heat exchange tube is a cone and is connected with the outer wall of the inner heat exchange tube in a sealing way;
an inlet and an outlet for circulating refrigerant working media are arranged on the wall surface of the cone of the outer heat exchange pipe; a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube so as to measure the temperature of the coil of the inner heat exchange tube;
the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor to measure the temperature of the auxiliary heat source working medium at the outlet;
the auxiliary heat source circulator is communicated with the inner heat exchange tube so that the auxiliary heat source working medium circulates between the heat exchanger and the auxiliary heat source circulator; the auxiliary heat source circulator comprises a heating chamber for heating an auxiliary heat source working medium;
a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature; and is
The control method of the control system comprises the following steps:
in the refrigeration mode, the refrigerator is started, and the outdoor temperature is detected through the third temperature sensor; under the condition that the outdoor temperature is greater than or equal to a preset environment high-temperature threshold value, starting the auxiliary heat source circulating machine, and detecting the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube through the second temperature sensor; under the condition that the temperature of the auxiliary heat source working medium is smaller than a preset water temperature threshold value, closing a water outlet valve of the heat exchanger to enable the auxiliary heat source working medium to circulate in the heat exchanger, and detecting the temperature of a coil of a heat exchange tube in the heat exchanger through the first temperature sensor; under the condition that the temperature of a coil of a heat exchange tube in the heat exchanger is smaller than a preset coil temperature threshold value, delaying for a plurality of seconds, and stopping the auxiliary heat source circulating machine; and is
In the heating mode, the heating is started, and the outdoor temperature is detected through the third temperature sensor; under the condition that the outdoor temperature is less than or equal to a preset environment low-temperature threshold value, starting the auxiliary heat source circulating machine, and detecting the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube through the second temperature sensor; when the temperature of the auxiliary heat source working medium is greater than a preset first temperature threshold value, closing a water outlet valve of the heat exchanger to enable the auxiliary heat source working medium to circulate in the heat exchanger; and closing the auxiliary heat source circulating machine after the heating of the air conditioner is stopped.
2. A control method of an air conditioning control system, wherein the air conditioning control system includes: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; wherein,
the heat exchanger comprises fins and heat exchange tubes penetrating the fins; the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating refrigerant working media and the inner heat exchange tubes for assisting heat source working media are formed; the end part of the outer heat exchange tube is a cone and is connected with the outer wall of the inner heat exchange tube in a sealing way; the end part of the cone of the outer heat exchange pipe is provided with an inlet and an outlet for circulating refrigerant working medium; a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube so as to measure the temperature of the coil of the inner heat exchange tube; the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor to measure the temperature of the auxiliary heat source working medium at the outlet;
the auxiliary heat source circulator is communicated with the inner heat exchange tube; the auxiliary heat source circulator comprises a heating chamber for heating an auxiliary heat source working medium; a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature;
and the control method includes:
starting the refrigerator, and detecting the outdoor temperature through the third temperature sensor;
under the condition that the outdoor temperature is greater than or equal to a preset environment high-temperature threshold value, starting the auxiliary heat source circulating machine, and detecting the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube through the second temperature sensor;
under the condition that the temperature of the auxiliary heat source working medium is smaller than a preset water temperature threshold value, closing a water outlet valve of the heat exchanger to enable the auxiliary heat source working medium to circulate in the heat exchanger, and detecting the temperature of a coil of a heat exchange tube in the heat exchanger through the first temperature sensor;
and under the condition that the temperature of the coil of the heat exchange tube in the heat exchanger is smaller than a preset coil temperature threshold value, delaying for a plurality of seconds, and stopping the work of the auxiliary heat source circulating machine.
3. The control method according to claim 2, wherein,
and under the condition that the temperature of the auxiliary heat source working medium is greater than or equal to the preset water temperature threshold, introducing the auxiliary heat source working medium with the temperature less than the preset water temperature threshold, and detecting the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube.
4. The control method according to claim 2, wherein the control method further comprises:
and detecting the exhaust temperature of the air conditioner compressor, and stopping the auxiliary heat source circulating machine after delaying for a plurality of seconds under the condition that the exhaust temperature is less than a preset exhaust temperature threshold value.
5. A control method of an air conditioning control system, wherein the air conditioning control system includes: the heat exchanger and an auxiliary heat source circulator are used for conveying an auxiliary heat source working medium to the heat exchanger; wherein,
the heat exchanger comprises fins and heat exchange tubes penetrating the fins; the heat exchange tubes comprise outer heat exchange tubes and inner heat exchange tubes arranged in the outer heat exchange tubes, and the outer heat exchange tubes for circulating refrigerant working media and the inner heat exchange tubes for assisting heat source working media are formed; the end part of the outer heat exchange tube is a cone and is connected with the outer wall of the inner heat exchange tube in a sealing way; the end part of the cone of the outer heat exchange pipe is provided with an inlet and an outlet for circulating refrigerant working medium; a first temperature sensor is arranged outside the outer heat exchange tube and on the outer wall of the outlet of the inner heat exchange tube so as to measure the temperature of the coil of the inner heat exchange tube; the inner wall of the outlet of the inner heat exchange tube is provided with a second temperature sensor to measure the temperature of the auxiliary heat source working medium at the outlet;
the auxiliary heat source circulator is communicated with the inner heat exchange tube; the auxiliary heat source circulator comprises a heating chamber for heating an auxiliary heat source working medium; a third temperature sensor is arranged outside the auxiliary heat source circulator to measure the outdoor temperature;
and the control method includes:
heating and starting up, and detecting the outdoor temperature through the third temperature sensor;
under the condition that the outdoor temperature is less than or equal to a preset environment low-temperature threshold value, starting the auxiliary heat source circulating machine, and detecting the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube through the second temperature sensor;
when the temperature of the auxiliary heat source working medium is greater than a preset first temperature threshold value, closing a water outlet valve of the heat exchanger to enable the auxiliary heat source working medium to circulate in the heat exchanger; and closing the auxiliary heat source circulating machine after the heating of the air conditioner is stopped.
6. The control method according to claim 5,
and after the temperature of the auxiliary heat source working medium is less than or equal to the preset first temperature threshold, the auxiliary heat source working medium is heated by the heating chamber to a preset second temperature threshold and then is sent into the heat exchange tube in the heat exchanger for circulation, and the temperature of the auxiliary heat source working medium at the outlet of the inner heat exchange tube is detected by the second temperature sensor.
7. The control method according to claim 6,
and after the temperature of the auxiliary heat source working medium is greater than the preset first temperature threshold, the heating chamber stops heating, and the auxiliary heat source working medium circulates in the heat exchanger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711051074.8A CN108105953B (en) | 2017-10-31 | 2017-10-31 | A kind of air-conditioner control system and its control method |
| PCT/CN2018/112189 WO2019085837A1 (en) | 2017-10-31 | 2018-10-26 | Air conditioner control system and control method thereof |
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| CN201711051074.8A CN108105953B (en) | 2017-10-31 | 2017-10-31 | A kind of air-conditioner control system and its control method |
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| CN108105953B true CN108105953B (en) | 2019-10-01 |
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| CN108105953B (en) * | 2017-10-31 | 2019-10-01 | 青岛海尔空调器有限总公司 | A kind of air-conditioner control system and its control method |
| CN109237639A (en) * | 2018-10-25 | 2019-01-18 | 奥克斯空调股份有限公司 | A kind of auxiliary heat exchanging device and air conditioner |
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| KR101175635B1 (en) * | 2011-06-29 | 2012-08-21 | 안동철 | An air conditioning system with non-defrost |
| KR20160013479A (en) * | 2014-07-25 | 2016-02-04 | 주식회사 동양매직 | A dehumidifier indicating amount of real-time dehumidification |
| CN105135739A (en) * | 2015-09-29 | 2015-12-09 | 江苏高科应用科学研究所有限公司 | Multifunctional heat pump type evaporative condensing air-conditioning unit |
| CN105180408A (en) * | 2015-10-27 | 2015-12-23 | 沈阳立德迅科技有限公司 | Special air conditioner for dry type computer room and implementation method of air conditioner |
| CN108105953B (en) * | 2017-10-31 | 2019-10-01 | 青岛海尔空调器有限总公司 | A kind of air-conditioner control system and its control method |
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