KR101548136B1 - Cooling and heating air condition system, and control method thereof - Google Patents

Abstract

The present invention relates to a cooling and heating air conditioning system which supports cooling and heating of an air conditioning system using an absorption cold and hot apparatus and, more specifically, relates to a cooling and heating air conditioning system and a control method thereof, which effectively reduces power of a cooling and heating water pump in accordance with a load deviation of an air conditioning system; and moreover, stably improves an efficiency of absorbing a cold and a hot apparatus.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling / heating air conditioning system,

The present invention relates to a cooling / heating air-conditioning system for supporting cooling / heating of an air-conditioning system using an absorption type cold / hot apparatus, and more particularly, And a control method of the cooling / heating air conditioning system.

There are various types of air-conditioning and air-conditioning systems that support air-conditioning in the air conditioning system. In the case of the air-conditioning and air-conditioning system using absorption chillers, water is used as a refrigerant to support air- have.

In the absorption type cold / hot apparatus, it is common to use a binary mixture of an absorbent, namely, lithium bromide and water as a refrigerant, that is, a dilute solution as a medium. The absorption type cold / hot apparatus will be briefly described as follows.

The cooling / heating water cooled or heated from the absorption type cooling / heating apparatus for cooling or heating is circulated through the cooling / heating water circulation line to the air conditioning system (for example, an indoor unit, a fan coil unit ), And is used for cooling or heating. The cooling / heating water, which is cooled or heated for heating after being passed through the air conditioning system, is installed on the cooling / heating water circulation line and pumped. And then circulated along the line to the absorption-type cold / hot apparatus again.

At this time, in order to control the indoor temperature in the air conditioning system by controlling the quantity of the cooling / heating water provided in the air conditioning system, a bypass line for bypassing the cooling / heating water provided in the air conditioning system is installed on the cooling / heating water circulation line And a bypass valve is provided for controlling the amount of bypassed by the bypass line. At this time, the conventional bypass valve is a valve that is manually operated by a person.

Thus, the operator of the system operates the bypass valve to bypass some of the cooling / heating water (e.g., 100 tons) provided from the absorption type cooling / heating apparatus (for example, 40 tons) By providing the system as an air conditioning system, it is possible to control the indoor temperature in the air conditioning system by controlling the quantity of the cooling / heating water supplied from the absorption type cooling / heating apparatus to the air conditioning system.

However, in the existing air-conditioning and air-conditioning system using the absorption-type cooling and heating device as described above, even when the amount of the cooling and heating water supplied to the air conditioning system is controlled by bypassing the cooling and heating water provided from the absorption type cooling and heating device, There is a problem in that a large amount of pumping power is used in the cooling / heating water pump because both the cooling / heating water provided by the air conditioning system and the cooling / heating water for bypassing (for example, 100 tons) are pumped.

Accordingly, the present invention proposes a method of efficiently reducing the power of the cooling / heating water pump in accordance with the load deviation of the air conditioning system, and further stably improving the efficiency of the absorption type cooling / heating apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an air conditioner which can efficiently reduce the power of cooling and heating water pump in accordance with a load deviation of the air conditioning system, And a method of controlling the air conditioning and heating / air conditioning system.

In order to accomplish the above object, according to a first aspect of the present invention, there is provided an air-conditioning and air-conditioning system comprising an absorption-type cooling / heating apparatus for cooling / heating water / cooling water to provide cooling / heating water, and an air conditioning system for cooling / ; Cooling / heating device provided on the cooling / heating water circulation line is interposed between a point where the cooling / heating water provided from the absorption type cooling / heating device flows into the air conditioning system and a point where cooling / heating water used for cooling and heating is discharged through the air conditioning system, A bypass line for bypassing a portion of the number; Cooling / heating water pump for pumping a number of cooling / heating water according to a set water control value to provide cooling / heating water to the absorption type cooling / heating device through the cooling / heating water circulation line; And determining whether or not the absorption-type cold / hot apparatus is malfunctioning based on a hydraulic pressure difference of a specific pipe through which the cooling / heating water passes in the air conditioning system, The quantity control value of the cooling / heating water pump is changed to the determined quantity control value, and the quantity of the cooling / heating water to be pumped is changed in accordance with the changed quantity control value in the cooling / heating water pump .

Preferably, each of the plurality of pipes included in the air conditioning system is provided with a pipe valve for opening / closing movement of the cooling / heating water, and the water pressure difference of the specific pipe is transmitted from the absorption type cold / It may be the difference between the water pressures measured by the hydraulic pressure sensors installed at both ends of the pipe valve of the pipe which is furthest on the line.

Preferably, the size of the water quantity control value is proportional to the quantity of water-saving water according to the water quantity control value, and the control unit determines that the determined water quantity control value is a predetermined minimum water quantity control value The quantity control value of the cooling / heating water pump can be changed to the minimum quantity control value instead of the determined quantity control value.

Preferably, the bypass line is provided with a bypass valve for bypassing the number of cooling / heating units in accordance with the set valve opening value, and when the absorption cold / Wherein the control unit determines that the water pressure difference of the specific pipe and the water pressure difference of the specific pipe are equal to or greater than a predetermined specific value greater than a predetermined specific water pressure difference to prevent malfunction of the absorption type cold / Calculates the optimum quantity required in the air conditioning system based on the pipe critical water pressure difference, and pumping the number of cooling / heating water in a quantity corresponding to the optimum quantity and the quantity of cooling / heating water that is bypassed according to the valve open value set in the bypass valve Can be determined.

Preferably, the size of the quantity control value is proportional to the quantity of cooling / heating water according to the quantity control value, and the determined quantity control value is determined to be a smaller value as the water pressure difference of the specific pipe is larger, The smaller the water pressure difference of the fluid, the greater the magnitude of the pressure difference.

Preferably, on the cooling / heating water circulation line, a water quantity measuring device for measuring the quantity of the cooling / heating water provided in the absorption type cold / hot apparatus is provided, and the control unit may control the water / When the quantity of the cooling / heating water measured in the bypass line is equal to or smaller than a predetermined critical quantity for preventing the malfunction of the absorption type cold / hot apparatus, the quantity of the cooling and heating water bypassed through the bypass line is raised in the cooling / It is possible to operate in a malfunction prevention mode in which the quantity of cooling and heating water can be increased.

Preferably, a water pressure sensor for measuring a water pressure is provided at both ends of the bypass valve, and the malfunction prevention mode is a mode in which the water quantity control value of the cooling / heating water pump is set to a predetermined minimum water quantity control And determines a valve open value based on a difference between water pressures measured by the water pressure sensors at both ends of the bypass valve and a predetermined bypass critical water pressure difference for preventing malfunction of the absorption type cold and hot apparatus, Changing the number of the cooling / heating water to be bypassed according to the changed valve opening value in the bypass valve by changing the valve open value to the bypass valve, and after changing the quantity of the cooling / Whether the hydraulic pressure difference of the specific pipe becomes smaller than the second specific value or more than the pipe critical hydraulic pressure difference Based on the hydraulic pressure difference across the bypass valve and the bypass critical hydraulic pressure difference when the hydraulic pressure difference of the specific pipe does not become smaller than the second specific numerical value than the pipe critical hydraulic pressure difference, And the malfunction prevention mode can be terminated when the hydraulic pressure difference of the specific pipe is smaller than the second specific value or more than the pipe critical hydraulic pressure difference.

Preferably, the quantity of the cooling / heating water that is bypassed according to the specific valve open value determined in the malfunction prevention mode is a value obtained by subtracting the number of the cooling / heating water that is bypassed according to the valve open value determined immediately before the specific valve open value in the malfunction prevention mode It may be larger than the quantity.

Preferably, when the malfunction prevention mode is terminated, the control unit calculates an optimum quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical pressure difference difference, It is possible to determine the quantity control value for pumping the number of cooling / heating units combined by the quantity of the cooling / heating water that is bypassed according to the valve opening value set for the valve.

In order to accomplish the above object, according to a second aspect of the present invention, there is provided a control method for an air conditioning and heating air conditioning system, comprising: an absorption type cooling / heating device for cooling / heating water / cooling water to provide cooling / heating water; and an air conditioning system for cooling / A water circulation line, a cooling water circulation line, and a cooling / heating water circulation line, wherein the cooling / heating water provided from the absorption type cooling / heating device is introduced into the air conditioning system through the air conditioning system and the cooling / A bypass line for bypassing a part of the cooling / heating water provided from the apparatus, and a cooling / heating unit for pumping a number of cooling / heating water according to the set water control value to provide cooling / heating water to the absorption cooling / Pump, and the cooling / heating water passes through the air conditioning system Determining whether or not the absorption-type cold / hot apparatus is in a malfunction state based on the hydraulic pressure difference of the specific pipe; Determining a quantity control value based on a hydraulic pressure difference of the specific pipe when the absorption-type cold / hot apparatus is not in a malfunction state; And a control step of changing the quantity control value of the cooling / heating water pump to the determined quantity control value and changing the quantity of the cooling / heating water to be pumped according to the changed quantity control value in the heating / cooling water pump.

Preferably, each of the plurality of pipes included in the air conditioning system is provided with a pipe valve for opening / closing movement of the cooling / heating water, and the water pressure difference of the specific pipe is transmitted from the absorption type cold / It may be the difference between the water pressures measured by the hydraulic pressure sensors installed at both ends of the pipe valve of the pipe which is furthest on the line.

Preferably, the size of the quantity control value is proportional to the quantity of the eclipse waterproof according to the quantity control value, and in the control step, the determined quantity control value is set to a predetermined minimum quantity control The quantity control value of the cooling / heating water pump can be changed to the minimum quantity control value instead of the determined quantity control value.

Preferably, the bypass line is provided with a bypass valve for bypassing the number of cooling / heating units in accordance with the set valve opening value, and when the absorption cold / Wherein the predetermined value is greater than a first specific value greater than a predetermined pipe critical water pressure difference for preventing malfunction of the absorption type cold and warm apparatus, and the determination step includes, when it is not a malfunction state of the absorption type cold / Calculating an optimum quantity required in the air conditioning system based on the pipe critical water pressure difference, and pumping the number of cooling / heating units by the number of cooling / heating water that is bypassed according to the optimum quantity and the valve open value set in the bypass valve The quantity control value to be set is determined.

Preferably, the size of the quantity control value is proportional to the quantity of cooling / heating water according to the quantity control value, and the determined quantity control value is determined to be a smaller value as the water pressure difference of the specific pipe is larger, The smaller the water pressure difference of the fluid, the greater the magnitude of the pressure difference.

Preferably, a quantity measuring device for measuring the quantity of the cooling / heating water provided in the absorption type cooling / heating device is installed on the cooling / heating water circulation line. In case of a malfunction state of the absorption type cooling / heating device, When the water quantity is equal to or smaller than a predetermined critical quantity for preventing the malfunction of the absorption type cold / hot apparatus, the quantity of the cooling / heating water bypassed through the bypass line is increased so that the quantity The operation mode may be operated in a malfunction prevention mode.

Preferably, a water pressure sensor for measuring a water pressure is provided at both ends of the bypass valve, and the malfunction prevention mode is a mode in which the water quantity control value of the cooling / heating water pump is set to a predetermined minimum water quantity control And determines a valve open value based on a difference between water pressures measured by the water pressure sensors at both ends of the bypass valve and a predetermined bypass critical water pressure difference for preventing malfunction of the absorption type cold and hot apparatus, Changing the number of the cooling / heating water to be bypassed according to the changed valve opening value in the bypass valve by changing the valve open value to the bypass valve, and after changing the quantity of the cooling / Whether the hydraulic pressure difference of the specific pipe becomes smaller than the second specific value or more than the pipe critical hydraulic pressure difference Based on the hydraulic pressure difference across the bypass valve and the bypass critical hydraulic pressure difference when the hydraulic pressure difference of the specific pipe does not become smaller than the second specific numerical value than the pipe critical hydraulic pressure difference, And the malfunction prevention mode can be terminated when the hydraulic pressure difference of the specific pipe is smaller than the second specific value or more than the pipe critical hydraulic pressure difference.

Preferably, the quantity of the cooling / heating water that is bypassed according to the specific valve open value determined in the malfunction prevention mode is a value obtained by subtracting the number of the cooling / heating water that is bypassed according to the valve open value determined immediately before the specific valve open value in the malfunction prevention mode It may be larger than the quantity.

Preferably, when the malfunction prevention mode is ended, the control unit enters the determination step, calculates an optimum quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical pressure difference, It is possible to determine the quantity control value for pumping the number of cooling / heating units in which the number of the cooling / heating water units bypassed according to the valve opening value changed and set to the bypass valve.

Therefore, according to the cooling / heating air conditioning system and the control method of the cooling / heating air conditioning system according to the present invention, the cooling / heating water pump power can be efficiently reduced according to the load deviation of the air conditioning system and the efficiency of the absorption / .

FIG. 1 is an exemplary view showing a configuration of a cooling and heating air conditioning system according to a preferred embodiment of the present invention.
2 is a control flowchart illustrating a control method of a cooling / heating air conditioning system according to a preferred embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

First, a cooling / heating air conditioning system according to a preferred embodiment of the present invention will be described with reference to FIG.

The cooling / heating air conditioning system according to the present invention includes a cooling / heating water circulation line (A) for circulating cooling / heating water between an absorption type cooling / heating device (100) for cooling / heating cooling / heating water and an air conditioning system (70) Cooling water circulating line (A) is interposed between a point where the cooling / heating water provided from the absorption type cooling / heating apparatus 100 enters the air conditioning system 70 and a point where the cooling / heating water used for cooling and heating is discharged through the air conditioning system 70 A bypass line B for bypassing a part of the cooling / heating water provided from the absorption type cold / hot apparatus 100, and a bypass line B for circulating cooling and heating water through the cooling / heating water circulation line A to the absorption type cold / And a cooling / heating water pump (200) for providing the cooling water.

Here, the absorption type cold / warm apparatus 100 is an absorption chiller that uses a binary mixture of an absorbent, namely, lithium bromide and water as a refrigerant, that is, a dilute solution as a medium.

The absorption type cold / hot apparatus 100 will be described in more detail. The absorption type cold / hot apparatus 100 includes an evaporator, a regenerator, an absorber, and a condenser built in a chamber. The refrigerant that has been converted to steam is condensed by the condenser, the condensed refrigerant flows into the evaporator and evaporates, and is absorbed by the action of the absorber in the absorber. The regenerator separates the absorbent and refrigerant from the dilute solution and feeds it to the evaporator and the absorber.

In this absorption type cold / warm apparatus 100, a refrigerant in the form of vapor in a heating cycle passes through an evaporator, while being cooled while heating a fluid flowing through a tube provided in the evaporator, to become a liquid refrigerant, The absorption liquid is absorbed by the absorption liquid and becomes a dilute absorption liquid, and the dilute absorption liquid is separated by the regenerator into the refrigerant vapor and the absorption liquid, and flows through the evaporator and the absorber respectively.

In addition, the absorption type cold / warm apparatus 100 is configured such that the refrigerant vapor generated in the regenerator in the cooling cycle flows to the condenser and is condensed, then flows to the evaporator, evaporates while cooling the fluid flowing in the tube installed in the evaporator, Is absorbed into the absorption liquid in the absorber to form a dilute absorption liquid, and the dilute absorption liquid is separated by the regenerator into the vapor of the refrigerant and the absorption liquid, and is made to flow to the condenser and the absorber.

The air conditioning system 70 includes a plurality of air conditioners 10, 20, 30, 40, ..., such as an indoor unit, a fan coil unit, and the like, P2, P3, P4.

Each of the pipes P1, P2, P3, P4 ... included in the air conditioning system 70 is provided with pipe valves 1, 2, 3, 4 ... for opening and closing the movement of the cooling / Respectively.

The cooling / heating water circulation line (A) is a circulation path circulating cooling / heating water between the absorption type cooling / heating apparatus (100) and the air conditioning system (70).

Therefore, it can be considered that a plurality of pipes P1, P2, P3, P4, ... included in the air conditioning system 70 belong to the circulation route of the cooling / heating water circulation line A.

The bypass line B is used to control the point where the cooling and heating water provided from the absorption type cooling and heating apparatus 100 flows into the air conditioning system 70 on the cooling and heating water circulation line A, And a part of the cooling / heating water provided from the absorption type cooling / heating apparatus 100 is bypassed.

On this bypass line (B), a bypass valve (50) is provided for bypassing the number of heating and cooling operations in accordance with the set valve opening value.

The cooling / heating water pump 200 pumps the cooling / heating water, and provides cooling / heating water to the absorption type cooling / heating apparatus 100 through the cooling / heating water circulation line (A).

In the conventional cooling / heating air conditioning system using the absorption type cooling / heating apparatus 100, the flow of cooling / heating water for bypassing a part of the cooling / heating water and providing the remainder to the air conditioning system 70 will be described. (For example, 100 tons) is circulated through the cooling / heating water circulation line (A), and a part (for example, 40 tons) is bypassed through the bypass line (B) Is supplied to the air conditioning system 70 through the air-conditioning water circulation line A and is then supplied to the air-conditioning and heating system through the air-conditioning system 70, which is bypassed through the bypass line B (For example, 60 tons) are combined and circulated to the absorption type cold / warm apparatus 100 again along the cooling / heating water circulation line (A). Of course, circulation of the cooling / heating water (for example, 100 tons) through the cooling / heating water circulation line A is performed by pumping the cooling / heating water pump 200.

Therefore, in the air conditioning and air-conditioning system, only a part (for example, 40 tons) of the cooling / heating water supplied from the absorption type cooling / heating apparatus 100 (for example, 40 tons) The indoor temperature of the air conditioning system can be adjusted by adjusting the quantity of the cooling / heating water supplied to the air conditioning system 70 from the absorption type cold /

However, even when the amount of the cooling / heating water supplied to the air conditioning system 70 is controlled by bypassing the cooling / heating water provided from the absorption type cooling / heating apparatus 100, the conventional cooling / , There is still a problem in that a large amount of pumping power is used in the air conditioning system 70 because the air conditioning system 70 is still pumping both the cooling / heating water supplied to the air conditioning system 70 and the number of heating /

Accordingly, the present invention proposes a method for efficiently reducing the power of the cooling / heating water pump 200 according to the load deviation of the air conditioning system 70, and further stably improving the efficiency of the absorption type cooling / heating apparatus 100 .

Hereinafter, a more specific configuration according to the present invention will be described in the configuration of the air conditioning and air-conditioning system described above with reference to Fig.

In the present invention, a water pressure sensor for measuring the cooling / heating water pressure is provided on each of or a part of each of a plurality of pipe valves (1, 2, 3, 4, ...) included in the air conditioning system (70).

Fig. 1 shows that water pressure sensors 4a and 4b are provided at both ends of a pipe valve 4 of a pipe P4 as an embodiment of the present invention.

The bypass valve 50 according to the present invention is not a mechanical valve that is manually operated by an existing person but a valve open value adaptively determined by a control unit 400 to be described later is changed and set It is an electric control valve that changes the quantity of the cooling / heating water to bypass.

At this time, if the air conditioning and air-conditioning system of the present invention is implemented by modifying the air-conditioning and air-conditioning system in which the existing mechanical bypass valve (not shown) is already installed in the bypass line B, (B) bypasses the bypass valve (B) when the bypass valve (50) is not in abnormal operation by installing the bypass valve (50) in parallel with the conventional mechanical bypass valve The bypass valve 50 of the present invention is bypassed and the number of cooling / heating operations bypassed through the bypass line B only when there is an abnormal operation of the bypass valve 50 is reduced by the conventional mechanical bypass valve To be bypassed.

Of course, in the case where the cooling / heating air conditioning system of the present invention is realized through the new installation, it is sufficient if the bypass valve 50 of the present invention is installed on the bypass line B without using a conventional mechanical bypass valve will be.

Further, in the case of the present invention, water pressure sensors 50a and 50b for measuring the water pressure are provided at both ends of the bypass valve 50. [

Further, in the case of the present invention, a water meter 300 for measuring the quantity of cooling / heating water supplied to the absorption type cold / hot apparatus 100 on the cooling / heating water circulation line (A) is further provided.

In Fig. 1, as an embodiment, the cooling / heating water bypassed through the bypass line (B) on the cooling / heating water circulation line (A) and the air conditioning system And the water meter 300 is installed between the rear end of the bypass line B and the absorption type cold / hot apparatus 100. [

In addition, the cooling / heating water pump 200 in the present invention pumps the number of cooling / heating water according to the set water control value.

More specifically, as shown in FIG. 1, an inverter 250 may be provided to control how much water is to be pumped by the cooling / heating water pump 200.

The inverter 250 of the cooling and heating water pump 200 controls the cooling and heating water pump 200 so as to pump the cooling and heating water according to the set water control value and the cooling and heating water pump 200 controls the inverter 250 The number of the cooling / heating water to be pumped can be changed according to the control of the control unit.

The cooling and heating air conditioning system according to the present invention can efficiently reduce the power of the cooling and heating water pump 200 according to the load deviation of the air conditioning system 70 and can stably improve the efficiency of the absorption type cooling and heating device 100 And a control unit 400 of the control algorithm.

The control unit 400 determines whether or not the absorption-type cooling and heating apparatus 100 is malfunctioning based on the hydraulic pressure difference of the specific pipe through which the cooling and heating water passes in the air conditioning system 70, The quantity control value is determined based on the hydraulic pressure difference of the specific pipe.

The control unit 400 changes the quantity control value of the cooling / heating water pump 200 to the determined quantity control value and changes the quantity of the cooling / heating water pumped according to the changed quantity control value in the heating / cooling water pump 200 .

More specifically, when the cooling / heating air conditioning system starts to operate, the absorption / cooling apparatus 100, the cooling / heating water pump 200, the inverter 250, the water meter 300, The control algorithm of the present invention which can efficiently reduce the power of the cooling / heating water pump 200 according to the load deviation of the system 70 and further stably improves the efficiency of the absorption type cold /

The control unit 400 of the present invention stores the control algorithm of the present invention and the control unit 400 may be a programmable logic controller (PLC) or a direct digital controller (DDC) Direct Digital Controller).

First, the control unit 400 determines whether or not the absorption-type cold / hot apparatus 100 is malfunctioning based on the hydraulic pressure difference of the specific pipe through which the cooling / heating water passes through the air conditioning system 70 .

Specifically, it can be said that the load deviation of the air conditioning system 70 varies depending on whether the room temperature at the position where the cooling and heating is required in the air conditioning system 70 is close to the target temperature.

That is, the air conditioner 40 among the plurality of air conditioners 10, 20, 30, 40 ... included in the air conditioning system 70 will be described. The pipe valve 4 is opened only slightly while the indoor temperature at the position where the air conditioner 40 is installed is lower than the target temperature If it is not close to the temperature, there is a great need to adjust the room temperature by using the cooling / heating water transmitted through the pipe P4 for cooling and heating, so that the pipe valve 4 will be widely opened to smoothly pass the cooling and heating water.

Therefore, as the room temperature at the position where the air conditioner 40 is installed becomes closer to the target temperature, the opening degree of the pipe valve 4 becomes smaller, so that the pressure difference measured at both ends of the pipe valve 4 will become larger.

As a result, the load deviation of the air conditioning system 70 can be reduced at both ends of the pipe valves 1, 2, 3, 4 ... of the pipes P1, P2, P3, P4 ... in the air conditioning system 70 It can be said that it corresponds to the deviation of the measured water pressure difference.

Accordingly, in the present invention, it is possible to control the cooling / heating water pump 200 based on the difference in hydraulic pressure of the pipes P1, P2, P3, P4 ... that can correspond to the load deviation of the air conditioning system 70 do.

Here, particularly in the present invention, the water pressure difference measured at the most distal pipe valve (4) is used.

The fact that the room temperature at the location where the air conditioner 40 at the end is installed is maintained at a proper target temperature means that the room temperature is maintained at a proper target temperature even at the position of other air conditioners 10, 20, 30 in the air conditioning system 70 The fact that the cooling / heating water is well transferred to the end pipe valve 4 by the pumping force of the cooling / heating water pump 200 also means that the other pipes P1, P2 and P3 in the air conditioning system 70 The water pressure difference measured at the end pipe valve 4, which eventually represents the situation of the air conditioning system 70, corresponds to the load deviation of the air conditioning system 70 It is because it can be said.

Therefore, the above-mentioned specific pipe means the pipe which is farthest from the absorption / cooling apparatus 100 among the plurality of pipes included in the air conditioning system 70 on the cooling / heating water circulation line (A).

1, the pipe which is farthest from the absorption cooling apparatus 100 on the cooling / heating water circulation line A among the plurality of pipes included in the air conditioning system 70 may be the pipe P4.

The pressure difference of the specific pipe mentioned above is a difference between the pressure of water measured by the pressure sensors 4a and 4b provided at both ends of the pipe valve 4 of the pipe P4, It will be a difference.

On the other hand, in the case where the absorption type cold / hot apparatus 100 is not in a malfunction state, the hydraulic pressure difference of the above-mentioned specific pipe, that is, the hydraulic pressure difference of the pipe P4 is smaller than the predetermined pipe critical hydraulic pressure difference for preventing malfunction of the absorption type cold / Is greater than the first specific value (e.g., 0.5 bar).

That is, the control unit 400 determines whether or not the water pressure difference of the pipe P4 is equal to or higher than the predetermined specific water pressure difference (for example, 0.5 bar) or more , It is determined whether or not the absorption-type cold / hot apparatus 100 is malfunctioning.

The control unit 400 determines whether or not the hydraulic pressure difference of the pipe P4 is greater than or equal to a first specific numerical value (for example, 0.5 bar) or more than the predetermined pipe critical hydraulic pressure difference based on the hydraulic pressure difference of the specific pipe, , It is judged that the absorption-type cold / hot apparatus 100 is not in a malfunction state. If the hydraulic pressure difference of the pipe P4 is not larger than the first predetermined numerical value (for example, 0.5 bar) It is determined that the absorption-type cold / hot apparatus 100 is malfunctioning.

The control unit 400 determines the quantity control value for the cooling / heating water pump 200 based on the water pressure difference of the specific pipe, that is, the water pressure difference of the pipe P4, when it is determined that the water- .

More specifically, the control unit 400 determines whether or not the cooling / heating air-conditioning system starts operating and, as a result of determining whether the absorption-type cooling / heating apparatus 100 is malfunctioning, , It is possible to bypass the bypass valve 50 through the bypass line B by setting the specific valve opening value to the bypass valve 50 so that the bypass valve 50 can control the number of cooling / desirable.

Here, the specific valve open value may be a valve open value (for example, 5%) designated in correspondence with the start of operation of the air-conditioning and air-conditioning system. Of course, the valve opening value of 5% is only an example, and it is also possible to specify different values.

When it is determined that the absorption-type cold / hot apparatus 100 is not in a malfunction state, the control unit 400 controls the air conditioning system 70 based on the hydraulic pressure difference of the specific pipe, that is, the hydraulic pressure difference between the pipe P4 and the pipe, And a quantity control value for pumping the number of cooling / heating units by the number of the cooling / heating water quantity that is bypassed according to the calculated optimum quantity and the (specific) valve opening value set in the bypass valve 50 Can be determined.

Generally, the size of the quantity control value is proportional to the quantity of the watercress water according to the quantity control value. That is, as the quantity control value increases (eg, 50 Hz -> 60 Hz), the quantity of watercress water according to the quantity control value will also increase (eg 80 to 100 tons).

The quantity control value determined by the controller 40 is determined to be a smaller value as the hydraulic pressure difference of the specific pipe, that is, the pipe P4 is larger, and is determined to be a larger value as the hydraulic pressure difference of the pipe P4 is smaller.

More specifically, the smaller the water pressure difference of the specific pipe, that is, the pipe P4, ie, the greater the degree of opening of the pipe valve 4 is because the room temperature at the position where the air conditioner 40 is installed is not close to the target temperature, It is appropriate that the optimum amount of water required in the air conditioning system 70 is increased because it is necessary to adjust the room temperature by using cooling and heating water for cooling and heating.

Conversely, the greater the water pressure difference of the specific pipe, that is, the pipe P4, that is, the closer the indoor temperature of the position where the air conditioner 40 is installed is to the target temperature and the opening degree of the pipe valve 4 is smaller, So that it is reasonable that the optimum quantity required in the air conditioning system 70 is reduced.

Corresponding to this, the control unit 400 calculates the optimum water amount required in the air conditioning system 70 based on the hydraulic pressure difference of the pipe P4 and the pipe critical hydraulic pressure difference, as the hydraulic pressure difference of the pipe P4 becomes larger The smaller the hydraulic pressure difference of the pipe P4, the larger the optimum quantity will be calculated.

Therefore, the control unit 400 sets the number of cooling / heating units by the number obtained by adding the calculated optimal quantity (the larger the water pressure difference of the pipe P4 is smaller and the water pressure difference of the pipe P4 is smaller) and the quantity of the cooling / Since the quantity control value to be pumped is determined, the finally determined quantity control value is determined to be a smaller value as the water pressure difference of the pipe P4 is larger, and is determined to be a larger value as the water pressure difference of the pipe P4 is smaller will be.

When the control unit 400 determines the quantity control value (for example, y1 Hz) as described above, the control unit 400 changes the quantity control value of the cooling / heating water pump 200 to the determined quantity control value (for example, y1 Hz) , And controls the cooling / heating water pump (200) to change the quantity of cooling / heating water to be pumped according to the changed quantity control value (e.g., y1 Hz).

More specifically, the control unit 400 changes the quantity control value set in the inverter 250 of the cooling / heating water pump 200 to the above-described quantity control value (e.g., y1 Hz). The inverter 250 controls the cooling and heating water pump 200 to pump the number of cooling and heating water according to the changed quantity control value (for example, y1 Hz), and the cooling and heating water pump 200 controls the inverter 250, The number of the cooling / heating water to be pumped can be changed according to the control of the control unit.

At this time, if the above-described determined water control value (e.g., y1 Hz) is smaller than the preset minimum water control value (Min Hz) for preventing malfunction of the absorption cooling apparatus 100, It is preferable to change the quantity control value of the control unit 200 to the minimum quantity control value (Min Hz) instead of the above-described quantity control value (e.g., y1 Hz).

The control unit 400 continues to execute the control algorithm of the present invention until the driving of the cooling and heating water pump 200 is ended so that the hydraulic pressure of the specific pipe in the air conditioning system 70, The number of cooling / heating water pumped by the cooling / heating water pump 200 can be adjusted according to the load deviation of the cooling /

As described above, the cooling / heating air conditioning system according to the present invention is configured such that, when the load of the air conditioning system 70 is small, a small amount of cooling / heating operation is performed according to the deviation of the hydraulic pressure difference of the specific pipe in the air conditioning system 70, The pumping power of the cooling / heating water pump 200 can be efficiently controlled by controlling the quantity of cooling / heating water pumped by the cooling / heating water pump 200 so as to pump a large quantity of cooling / The efficiency of the absorption type cold / hot apparatus can be improved because the quantity of cooling / heating water to be cooled or heated in the absorption type cold /

In the meantime, since the cooling / heating air conditioning system according to the present invention regulates the quantity of cooling / heating water pumped by the cooling / heating water pump 200 in accordance with the load deviation of the air conditioning system 70 as described above, In consideration of the characteristics of the absorption type cold / warm apparatus 100, which is susceptible to malfunctions, it is necessary to prevent malfunction of the absorption type cold / warm apparatus 100 in advance.

The cooling water pump 200 is operated to determine whether or not the absorbing cold / hot apparatus 100 is malfunctioning in the above-described manner, and if the water control value (e.g., y1 Hz) determined in the foregoing is smaller than the minimum water control value (Min Hz) Is set to be changed to the minimum quantity control value (Min Hz) instead of the above-described quantity control value (for example, y1 Hz) in order to prevent malfunction of the absorption type cold / warm apparatus 100 .

Hereinafter, a method for preventing the malfunction of the absorption type cold / warm apparatus 100 according to the present invention will be described in detail.

If the controller 400 determines that the absorption cooling apparatus 100 is malfunctioning as a result of determining whether the absorption cooling apparatus 100 is malfunctioning, the control unit 400 may bypass the bypass line B, So that the number of cooling / heating water pumped by the cooling / heating water pump 200 can be increased.

That is, as described above, the control unit 400 determines whether or not the hydraulic pressure difference of the pipe P4 is lower than the predetermined pipe threshold hydraulic pressure difference based on the hydraulic pressure difference of the specific pipe, that is, : 0.5 bar), it is determined that the absorption-type cold / hot apparatus 100 is malfunctioning, and in this case, the malfunction-prevention mode can be operated.

Also, when the water quantity measured by the water level meter 300 is equal to or smaller than a preset critical quantity for preventing malfunction of the absorption type cold / warm apparatus 100, the control unit 400 also operates in the malfunction prevention mode .

At this time, it is preferable that the critical water quantity is larger than the maximum quantity of the water-repellent water in which the malfunction occurs in the absorption type cold and warm apparatus 100 in practice.

In the malfunction prevention mode, the quantity control value of the cooling / heating water pump 200 is changed to a predetermined minimum quantity control value (Min Hz) for preventing malfunction of the absorption type cold / The valve open value is determined based on a predetermined bypass critical water pressure difference for preventing a difference in water pressure measured by the water pressure sensors 50a and 50b at both ends and a malfunction of the absorption type cold and warm apparatus 100, The bypass valve 50 is changed and the bypass valve 50 changes the quantity of the cooling / heating water to be bypassed according to the changed valve opening value, and after the quantity of the cooling / It is determined whether or not the hydraulic pressure difference of the specific pipe, that is, the pipe P4, is smaller than the second predetermined value or more than the pipe critical hydraulic pressure difference. If the hydraulic pressure difference of the pipe P4 is smaller than the second critical hydraulic pressure difference The valve opening value for changing and setting the bypass valve 50 is determined again based on the hydraulic pressure difference between the both ends of the bypass valve 50 and the bypass critical hydraulic pressure difference, ) Is smaller than the second specific value or more than the pipe critical water pressure difference, it is possible to define a mode for ending the malfunction prevention mode.

Hereinafter, the control unit 400 operating in the malfunction prevention mode will be described.

The control unit 400 first changes the quantity control value of the cooling / heating water pump 200 to a predetermined minimum quantity control value Min Hz for preventing malfunction of the absorption type cold / warm apparatus 100 .

Therefore, the inverter 250 of the cooling / heating water pump 200 controls the cooling / heating water pump 200 to pump the number of cooling / heating water according to the changed minimum water control value (Min Hz), and the cooling / ) Can change the quantity of the cooling / heating water to be pumped under the control of the inverter (250).

The control unit 400 controls the bypass valve 50 so as to prevent a difference in the water pressure measured by the water pressure sensors 50a and 50b at both ends of the bypass valve 50 and a malfunction of the absorption type cold / The valve open value for the bypass valve 50 is determined.

As described above, the malfunction prevention mode is a mode for increasing the quantity of the cooling / heating water bypassed through the bypass line (B), thereby increasing the quantity of cooling / heating water pumped by the cooling / heating water pump (200).

In response to this, the control unit 400 controls the valves for the bypass valve 50 based on the difference between the hydraulic pressures measured by the hydraulic pressure sensors 50a and 50b at both ends of the bypass valve 50 and the bypass critical hydraulic pressure difference, In calculating the open value, the valve open value for bypassing a larger number of heating and cooling water than the valve open value currently set in the bypass valve 50 will be determined.

When the valve open value (for example, y2%) is determined as described above, the controller 400 changes the valve opening value (for example, y2%) determined by the valve 50 to the bypass valve 50, 50) to change the quantity of the cooling / heating water to be bypassed according to the set valve open value (for example, y2%).

After the quantity of the cooling / heating water to be bypassed is changed according to the valve open value (for example, y2%) changed as described above, the control unit 400 determines that the pressure difference of the specific pipe, that is, the pipe P4, It is judged whether or not it becomes smaller than a second specific value (for example, 0.1 bar).

That is, the control unit 400 sets the quantity control value of the cooling / heating water pump 200 to the minimum water control value Min Hz as described above, and sets the quantity of cooling / heating water to be pumped by the cooling / heating water pump 200 , The valve opening value (e.g., y2%) is determined and the bypass valve 50 is changed to set the amount of the cooling / heating water to be bypassed, and then the pressure difference of the pipe P4, To a second specific value (e.g., 0.1 bar) or more.

At this time, if the water pressure difference of the pipe P4 is smaller than the second specific value (for example, 0.1 bar) rather than the pipe critical water pressure difference, it may be determined that the quantity of the cooling /

The control unit 400 changes the quantity control value of the cooling / heating water pump 200 to the minimum water control value Min Hz as described above, sets the quantity of cooling / heating water to be pumped by the cooling / heating water pump 200, The water pressure difference of the pipe P4 is set to a second specific value (for example, y2%) than the pipe critical water pressure difference after changing the quantity of the cooling / When the value becomes smaller than the numerical value (for example, 0.1 bar), the malfunction prevention mode is terminated.

On the other hand, the control unit 400 determines the quantity of cooling / heating water to be pumped by the cooling / heating water pump 200 according to the minimum water control value (Min Hz) as described above, and determines the valve opening value (e.g., y2% When the water pressure difference of the pipe P4 does not become smaller than the second specific numerical value (for example, 0.1 bar) than the pipe critical water pressure difference after changing the quantity of cooling / heating water to be changed and set to the bypass valve 50 (For example, y2 '%) for changing and setting the bypass valve 50 based on the hydraulic pressure difference between the both ends of the bypass valve 50 and the bypass critical hydraulic pressure difference.

Here, the quantity of the cooling / heating water that is bypassed according to the specific valve open value determined in the malfunction prevention mode is larger than the quantity of the heating / cooling water that is bypassed according to the valve open value determined immediately before the specific valve open value in the malfunction prevention mode desirable.

That is, if the specific valve open value is taken as the recalculated valve open value (eg, y2 '%), the quantity of cooling / heating water that is bypassed according to the valve open value (eg, y2'%) determined in the malfunction prevention mode, Is greater than the quantity of heating / cooling water bypassed by the valve open value (eg, y2%) determined just prior to the valve open value (eg, y2 '%) in the prevention mode.

After switching to the malfunction prevention mode, the control unit 400 will determine an increasingly larger value of the valve open value each time the valve open value for changing the setting to the bypass valve 50 is reset.

The control unit 400 determines the quantity of the cooling / heating water to be pumped by the cooling / heating water pump 200 according to the minimum water control value (Min Hz) as described above and sets the valve open value (e.g., y2 '%) The water pressure difference of the pipe P4 changed as a result of performing steps S210 and S220 of changing the quantity of the cooling / heating water to be changed and set in the decision and bypass valve 50 is changed from the second threshold value If the water pressure difference of the pipe P4 is smaller than the second specific value (for example, 0.1 bar) than the pipe critical water pressure difference by repeating the process of determining whether the pipe P4 is smaller than a specific value (for example, 0.1 bar) Exit the mode.

Under the condition that the valve open value (for example, y2 '%) set in the bypass valve 50 in the malfunction prevention mode is maintained for a predetermined time when the malfunction prevention mode is ended as described above, The number of cooling / heating water pumped by the cooling / heating water pump 200 can be adjusted according to the hydraulic pressure difference of the specific pipe in the air conditioning system 70, that is, the load deviation of the air conditioning system 70, as described above have.

As described above, according to the cooling / heating air-conditioning system of the present invention, when the load of the air-conditioning system 70 is small due to the load deviation of the air-conditioning system 70, The pumping power of the cooling / heating water pump 200 is efficiently reduced by controlling the quantity of cooling / heating water pumped by the cooling / heating water pump 200 so as to pump a large quantity of cooling / heating water when the load of the cooling / ) Can be improved.

In addition, according to the cooling / heating air conditioning system of the present invention, the quantity of the cooling / heating water pumped by the cooling / heating water pump 200 is controlled according to the load deviation of the air conditioning system 70, It is possible to prevent any malfunction that may occur in the suction-type cold / hot apparatus 100 from occurring.

As a result, the cooling / heating air conditioning system according to the present invention effectively reduces the power of the cooling / heating water pump 200 according to the load deviation of the air conditioning system 70 and further stably improves the efficiency of the absorption type cooling / .

Hereinafter, a control method of the air conditioner / air conditioning system according to a preferred embodiment of the present invention will be described with reference to FIG.

For convenience of explanation, reference will be made to the reference numerals described with reference to Fig.

The control method of the cooling and heating air conditioning system of the present invention is a method of controlling the cooling and heating air conditioning system when the cooling and heating air conditioning system starts to operate (S100 , It is determined whether the absorption-type cold / hot apparatus 100 is malfunctioning based on the hydraulic pressure difference of the specific pipe in the air-conditioning system 70 (S110).

Here, the specific pipe means the pipe which is the farthest from the absorption cooling apparatus 100 on the cooling / heating water circulation line (A), that is, the pipe P4 in the case of FIG. 1, and the pressure difference of the specific pipe mentioned above, And the water pressure measured by the water pressure sensors 4a and 4b installed at both ends of the valve 4. [

The control method of the cooling / heating air conditioning system of the present invention is a control method of the cooling / heating air conditioning system of the present invention, wherein the hydraulic pressure difference of the pipe (P4) is set to a first specific value : 0.5 bar), it can be determined whether or not the absorption-type cold / hot apparatus 100 is malfunctioning.

The control method of the cooling / heating air conditioning system according to the present invention is characterized in that when the hydraulic pressure difference of the pipe P4 is greater than a predetermined specific value (for example, 0.5 bar) If the water pressure difference of the pipe P4 is judged not to be a state of caution and the water pressure difference of the pipe P4 is not larger than the first predetermined numerical value (for example, 0.5 bar) .

The control method of the cooling and heating air conditioning system of the present invention is a method of controlling the cooling and heating air conditioning system in which the quantity of the cooling and heating water measured by the water quantity measuring device 300 is measured by the absorption type cooling and heating device 100, It is determined whether or not it is equal to or smaller than a preset critical quantity for preventing a malfunction of the apparatus 100 (S120).

In the control method of the cooling / heating air conditioning system of the present invention, when the quantity of the cooling / heating water measured by the water meter 300 is not equal to or smaller than the critical quantity (S120 No) The water quantity control value for the cooling / heating water pump 200 is determined based on the water pressure difference of the water /

On the other hand, in the control method of the cooling / heating air conditioning system of the present invention, when it is determined that the absorption cooling apparatus 100 is malfunctioning state (Yes in S110), or it is determined that the absorption cooling apparatus 100 is not in a malfunction state, When the quantity of the cooling / heating water measured by the controller 300 is equal to or smaller than the critical quantity (Yes in S120), it operates in the malfunction prevention mode.

Of course, it is also possible to change the order of steps S110 and S120.

Hereinafter, the process after step S130 of determining the quantity control value for the cooling / heating water pump 200 based on the water pressure difference of the pipe P4 will be described.

More specifically, in the control method of the cooling / heating air conditioning system of the present invention, when the quantity of the cooling / heating water measured by the water meter 300 is not equal to or smaller than the critical quantity (S120 No) It is preferable that the bypass valve 50 bypasses the number of cooling / heating units according to the set specific valve opening value through the bypass line B (S130?). Here, the specific valve open value may be a valve open value (for example, 5%) designated in correspondence with the start of operation of the air-conditioning and air-conditioning system.

The control method of the cooling / heating air conditioning system of the present invention determines the quantity control value for the cooling / heating water pump 200 based on the water pressure difference of the pipe P4 and the pipe critical water pressure difference (S140).

Specifically, the control method for the cooling / heating air conditioning system of the present invention calculates the optimum quantity required in the air conditioning system 70 based on the hydraulic pressure difference of the pipe P4 and the pipe critical hydraulic pressure difference, It is possible to determine the quantity control value for pumping the number of the cooling / heating water of the number of the cooling / heating water that is bypassed according to the (specific) valve open value set in the pass valve 50 (S140).

For example, as the water pressure difference of the pipe P4 is smaller, that is, as the indoor temperature of the position where the air conditioner 40 is installed is not close to the target temperature and the degree of opening of the pipe valve 4 is larger, It is appropriate that the optimum quantity required in the air conditioning system 70 is increased.

Conversely, the greater the water pressure difference of the pipe P4, that is, the closer the indoor temperature of the position where the air conditioner 40 is installed is to the target temperature and the opening degree of the pipe valve 4 is smaller, It is reasonable that the optimum quantity required in the air conditioning system 70 is reduced.

The control method of the cooling and heating air conditioning system of the present invention is a method of controlling the cooling and heating air conditioning system of the present invention in which the pipe P4 is controlled based on the hydraulic pressure difference of the pipe P4 and the pipe critical water pressure difference, The larger the water pressure difference of the pipe P4 is and the smaller the water pressure difference of the pipe P4 is, the larger the optimum water quantity will be calculated.

Therefore, the control method of the cooling / heating air conditioning system of the present invention is a method of controlling the cooling / heating air conditioning system of the present invention, in which the calculated optimum amount (the larger the smaller the water pressure difference of the pipe P4 and the smaller the water pressure difference of the pipe P4) The quantity control value determined so as to pump the cooling / heating water of the pipe P4 is determined to be a smaller value as the water pressure difference of the pipe P4 is larger, and as the water pressure difference of the pipe P4 becomes smaller, As shown in FIG.

If the quantity control value (for example, y1 Hz) is determined in step S140, the determined quantity control value (e.g., y1 Hz) is used to prevent malfunction of the absorption type cold / warm apparatus 100 Is smaller than a preset minimum water control value (Min Hz) (S150).

Thus, the control method of the cooling / heating air conditioning system of the present invention is such that, if the determined quantity control value (e.g., y1 Hz) is not less than the minimum quantity control value (Min Hz) (S150 Yes), the quantity control value of the cooling / heating water pump 200 is changed to the determined quantity control value (e.g., y1 Hz), and the cooling / Control is performed so as to change the quantity of the cooling / heating water to be pumped in accordance with the quantity control value (e.g., y1 Hz) (S160).

That is, the control method of the cooling / heating air conditioning system of the present invention changes and sets the quantity control value set in the inverter 250 of the cooling / heating water pump 200 to the determined quantity control value (for example, y1 Hz). The inverter 250 controls the cooling and heating water pump 200 to pump the number of cooling and heating water according to the changed quantity control value (for example, y1 Hz), and the cooling and heating water pump 200 controls the inverter 250, The number of the cooling / heating water to be pumped can be changed according to the control of the control unit.

Meanwhile, the control method of the present invention is such that if the determined quantity control value (for example, y1 Hz) is smaller than the minimum quantity control value (Min Hz), that is, if the determined quantity control value (S150 No), the quantity control value of the cooling / heating water pump 200 is changed to the minimum quantity control value (Min Hz) instead of the above-described determined quantity control value (e.g., y1 Hz) (S170).

After that, the control method of the cooling / heating air conditioning system of the present invention repeatedly enters the step S110 until the driving of the cooling / heating water pump 200 is terminated (No in S180), and according to the control algorithm of the present invention, The number of cooling / heating water pumped by the cooling / heating water pump 200 can be adjusted according to the variation of the hydraulic pressure difference of the specific pipe in the air conditioning system 70, that is, the load deviation of the air conditioning system 70.

In the following, a process of operating in the above-described malfunction prevention mode will be described.

More specifically, the method of controlling the cooling / heating air conditioning system of the present invention is a method of controlling the cooling / heating air conditioning system in a case where it is determined that the absorption cooling apparatus 100 is malfunctioning state (Yes in S110) When the quantity of the cooling / heating water measured by the water meter 300 becomes equal to or smaller than the critical quantity (S120 Yes), the mode is switched to the malfunction prevention mode (S190) and the quantity control value of the cooling / In order to prevent malfunction of the absorption type cold / hot apparatus 100, a predetermined minimum water control value (Min Hz) is changed and set (S200).

Therefore, the inverter 250 of the cooling / heating water pump 200 controls the cooling / heating water pump 200 to pump the number of cooling / heating water according to the changed minimum water control value (Min Hz), and the cooling / ) Can change the quantity of the cooling / heating water to be pumped under the control of the inverter (250).

The control method for the cooling and heating air conditioning system of the present invention is a method for controlling the cooling and heating air conditioning system of the present invention in order to prevent a difference in water pressure measured by the water pressure sensors 50a and 50b at both ends of the bypass valve 50 and malfunction of the absorption- Based on the pass critical hydraulic pressure difference, a valve open value for the bypass valve 50 is determined (S210).

As described above, the malfunction prevention mode is a mode for increasing the quantity of the cooling / heating water bypassed through the bypass line (B), thereby increasing the quantity of cooling / heating water pumped by the cooling / heating water pump (200).

Corresponding to this, the control method of the cooling / heating air conditioning system of the present invention is characterized in that the bypass valve (50) is controlled based on the difference between the hydraulic pressures measured by the hydraulic pressure sensors (50a, 50b) 50, it will determine the valve open value to bypass the larger number of heating and cooling water than the valve open value currently set in the bypass valve 50. [

The control method of the cooling / heating air conditioning system of the present invention changes the determined valve opening value (for example, y2%) to the bypass valve 50 by determining the valve opening value (for example, y2% (S220) so as to change the quantity of the cooling / heating water to be bypassed according to the valve opening value (for example, y2%) changed by the bypass valve 50.

In the control method of the cooling / heating air conditioning system of the present invention, after the quantity of the cooling / heating water to be bypassed is changed according to the valve open value (for example, y2%) changed as described above, the pressure difference of the specific pipe, It is determined whether the pipe critical water pressure difference is smaller than a second specific value (for example, 0.1 bar) (S230).

That is, in the control method of the cooling / heating air conditioning system of the present invention, the water control value of the cooling / heating water pump 200 is changed to the minimum water control value (Min Hz) in step S200 described above and is pumped by the cooling / After performing the steps S210 and S220 of changing the quantity of the cooling / heating water that determines the quantity of the cooling / heating water and changes the valve opening value (e.g., y2%) to the bypass valve 50 and then bypasses it, It is determined whether or not the water pressure difference of the pipe P4 changed to be smaller than the second specific value (for example, 0.1 bar) is greater than the pipe critical water pressure difference.

At this time, if the water pressure difference of the pipe P4 is smaller than the second specific value (for example, 0.1 bar) rather than the pipe critical water pressure difference, it may be determined that the quantity of the cooling /

In the control method of the cooling / heating air conditioning system of the present invention, when the water pressure difference of the pipe P4 is smaller than the second specific value (for example, 0.1 bar) (S230 Yes) The malfunction prevention mode is terminated (S240), and the step S130 can be entered (I).

On the other hand, when it is determined in step S230 that the water pressure difference of the pipe P4 is not smaller than the second specific numerical value (for example, 0.1 bar) than the pipe critical water pressure difference (S230 No (For example, y2 '%) for changing and setting the bypass valve 50 based on the hydraulic pressure difference between the both ends of the bypass valve 50 and the bypass critical pressure difference, Re-determine.

Here, the control method of the cooling / heating air conditioning system of the present invention determines an increasingly larger value of the valve opening value each time the valve opening value for changing the setting to the bypass valve 50 is determined again after switching to the malfunction prevention mode will be.

Accordingly, the control method of the cooling / heating air conditioning system of the present invention determines the quantity of cooling / heating water to be pumped by the cooling / heating water pump 200 according to the minimum water control value (Min Hz) as described above, %) Is changed to the recalculation and bypass valve 50 to change the quantity of the cooling / heating water to be bypassed, and then the water pressure difference of the changed pipe P4 is changed to the pipe threshold (For example, 0.1 bar) than the hydraulic pressure difference (S230). If the water pressure difference of the pipe P4 is smaller than the second specific value (for example, 0.1 bar) (S230 Yes), the malfunction prevention mode is terminated (S240), and the process proceeds to step S130 (step S303).

In step S130, the valve opening value (for example, y2 ') set in the bypass valve 50 in the malfunction prevention mode is set to' (2)) according to the control algorithm of the present invention in accordance with the control algorithm of the present invention in accordance with the hydraulic pressure difference of a specific pipe in the air conditioning system 70, that is, the load deviation of the air conditioning system 70 200 can control the quantity of cooling and heating water pumped.

According to the control method of the cooling / heating air conditioning system of the present invention as described above, the power of the cooling / heating water pump 200 can be efficiently reduced according to the load deviation of the air conditioning system 70, Which leads to a stable improvement effect.

The control method of the air conditioning and heating air conditioning system according to an embodiment of the present invention may be implemented in the form of a program command that can be executed through various computer means and recorded in a computer readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

According to the cooling / heating air conditioning system and the control method of the cooling / heating air conditioning system according to the present invention, the cooling / heating water pump power can be efficiently reduced according to the load variation of the air conditioning system, and the efficiency of the absorption / It is an invention that is industrially applicable because it is beyond the limit of the existing technology, and it is not only the use of the related technology, but also the possibility of commercialization or operation of the applied device is sufficient and practically possible.

A: Air-conditioning water circulation line B: Bypass line
P1, P2, P3, P4: Pipe 1,2,3,4: Pipe valve
4a, 4b: hydraulic pressure sensors 10, 20, 30, 40:
70: air conditioning system 50: bypass valve
50a, 50b: hydraulic pressure sensor
100: Absorption cooling apparatus 200: Heating / cooling water pump
250: Inverter 300: Quantity measuring device
400:

Claims (18)

An air conditioning water circulation line for circulating the cooling / heating water between the absorption type cold / warm apparatus that provides cooling / heating water by cooling or heating, and an air conditioning system that uses cooling /
Cooling / heating device provided on the cooling / heating water circulation line is interposed between a point where the cooling / heating water provided from the absorption type cooling / heating device flows into the air conditioning system and a point where cooling / heating water used for cooling and heating is discharged through the air conditioning system, A bypass line for bypassing a portion of the number;
Cooling / heating water pump for pumping a number of cooling / heating water according to a set water control value to provide cooling / heating water to the absorption type cooling / heating device through the cooling / heating water circulation line; And
Wherein the control unit determines whether or not the absorption-type cold / hot apparatus is malfunctioning based on a hydraulic pressure difference of a specific pipe through which the cooling / heating water passes in the air conditioning system, And changes the quantity control value of the cooling / heating water pump to the determined quantity control value to change the quantity of the cooling / heating water to be pumped according to the changed quantity control value in the cooling / heating water pump And a controller for controlling the air conditioner. The method according to claim 1,
Wherein each of the plurality of pipes included in the air conditioning system is provided with a pipe valve for opening and closing movement of the cooling /
At both ends of the pipe valve, a water pressure sensor for measuring the water pressure is provided,
The hydraulic pressure difference of the specific pipe,
Wherein a difference between water pressures measured by a water pressure sensor provided at both ends of a pipe valve of a pipe which is the farthest from the absorption / cooling apparatus in the cooling / heating water circulation line among the plurality of pipes. The method according to claim 1,
The size of the quantity control value is proportional to the quantity of the cooling / heating water according to the quantity control value,
Wherein,
Setting the quantity control value of the cooling / heating water pump to the minimum quantity control value instead of the determined quantity control value when the determined quantity control value is smaller than the predetermined minimum quantity control value for preventing malfunction of the absorption type cold / Wherein the air conditioning system comprises: The method according to claim 1,
A bypass valve is provided on the bypass line for bypassing the number of cooling / heating units according to a set valve opening value,
In the case where the absorption-type cold / hot apparatus is not in a malfunction state, the water pressure difference of the specific pipe is larger than the predetermined specific water pressure difference by more than a first specific value for preventing malfunction of the absorption-
Wherein,
Wherein the control unit calculates the optimum quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical hydraulic pressure difference when the absorption cooling apparatus is not malfunctioning, And determines a quantity control value for pumping the number of cooling / heating units combined by the number of cooling / heating water that is bypassed according to the open value. The method according to claim 1,
The size of the quantity control value is proportional to the quantity of the cooling / heating water according to the quantity control value,
Wherein the determined quantity control value is determined to be a smaller value as the water pressure difference of the specific pipe is larger and is determined to be a larger value as the water pressure difference of the specific pipe is smaller. 5. The method of claim 4,
The water-cooling water circulation line is provided with a water meter for measuring the quantity of cooling / heating water supplied to the absorption type cold /
Wherein,
In the case of a malfunction state of the absorption type cold / hot apparatus or when the quantity of the cooling / heating water measured by the water meter is equal to or smaller than a preset critical quantity for preventing malfunction of the absorption type cold / And operates in a malfunction prevention mode in which the quantity of cooling / heating water to be passed is increased so that the quantity of cooling / heating water pumped by the heating / cooling water pump can be increased. The method according to claim 6,
At both ends of the bypass valve, a water pressure sensor for measuring the water pressure is provided,
In the malfunction prevention mode,
The water quantity control value of the cooling / heating water pump is changed to a preset minimum water quantity control value for preventing malfunction of the absorption type cold /
Determining a valve opening value based on a difference between water pressures measured by the water pressure sensors at both ends of the bypass valve and a predetermined bypass critical water pressure difference for preventing malfunction of the absorption type cold /
Changing the determined valve open value to the bypass valve and changing the quantity of the cooling / heating water to be bypassed according to the changed valve opening value at the bypass valve,
Determining whether or not the water pressure difference of the specific pipe becomes smaller than the second specific value or more than the pipe critical water pressure difference after the quantity of the cooling /
When the hydraulic pressure difference of the specific pipe does not become smaller than the second predetermined numerical value or more than the pipe critical hydraulic pressure difference, it is possible to change the bypass pressure at the bypass valve based on the hydraulic pressure difference across the bypass valve and the bypass critical pressure difference And when the water pressure difference of the specific pipe is smaller than the second specific value or more than the pipe critical water pressure difference, the malfunction prevention mode is terminated. 8. The method of claim 7,
The quantity of the cooling / heating water that is bypassed according to the specific valve open value determined in the malfunction prevention mode is larger than the quantity of the cooling / heating water that is bypassed according to the valve open value determined immediately before the specific valve open value in the malfunction prevention mode Air conditioning and heating system. 8. The method of claim 7,
Wherein,
And calculates the optimal quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical hydraulic pressure difference when the malfunction prevention mode is ended, Wherein the control unit determines the quantity control value for pumping the number of the cooling / heating water by the number of the cooling / A cooling / heating water circulation line for circulating cooling / heating water between an absorption type cooling / heating device for cooling / heating the cooling / heating water and an air conditioning system for cooling and heating the cooling and heating water; A bypass line which is interposed between a point where air is introduced into the system and a point where cooling and heating water used for cooling and heating through the air conditioning system is discharged and which bypasses a part of the cooling and heating water provided from the absorption type cooling and heating device, And a cooling / heating water pump for supplying cooling / heating water to the absorption type cooling / heating unit through the cooling / heating water circulation line, the method comprising the steps of:
A determining step of determining whether or not the absorption-type cold / hot apparatus is malfunctioning based on a hydraulic pressure difference of a specific pipe through which the cooling / heating water passes in the air conditioning system;
Determining a quantity control value based on a hydraulic pressure difference of the specific pipe when the absorption-type cold / hot apparatus is not in a malfunction state; And
And a control step of changing the quantity control value of the cooling / heating water pump to the determined quantity control value and changing the quantity of the cooling / heating water to be pumped according to the changed quantity control value in the heating / cooling water pump A method for controlling a cooling / heating air conditioning system. 11. The method of claim 10,
Wherein each of the plurality of pipes included in the air conditioning system is provided with a pipe valve for opening and closing movement of the cooling /
At both ends of the pipe valve, a water pressure sensor for measuring the water pressure is provided,
The hydraulic pressure difference of the specific pipe,
Wherein a difference between water pressures measured by a water pressure sensor provided at both ends of a pipe valve of a pipe which is farthest from the absorption / cooling apparatus in the cooling / heating water circulation line among the plurality of pipes. 11. The method of claim 10,
The size of the quantity control value is proportional to the quantity of the cooling / heating water according to the quantity control value,
Wherein the control step comprises:
Setting the quantity control value of the cooling / heating water pump to the minimum quantity control value instead of the determined quantity control value when the determined quantity control value is smaller than the predetermined minimum quantity control value for preventing malfunction of the absorption type cold / Wherein the air conditioning system comprises: 11. The method of claim 10,
A bypass valve is provided on the bypass line for bypassing the number of cooling / heating units according to a set valve opening value,
In the case where the absorption-type cold / hot apparatus is not in a malfunction state, the water pressure difference of the specific pipe is larger than the predetermined specific water pressure difference by more than a first specific value for preventing malfunction of the absorption-
Wherein,
Wherein the control unit calculates the optimum quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical hydraulic pressure difference when the absorption cooling apparatus is not malfunctioning, Wherein the control unit determines the quantity control value for pumping the number of cooling / heating units by the number of the cooling / heating water that is bypassed according to the open value. 11. The method of claim 10,
The size of the quantity control value is proportional to the quantity of the cooling / heating water according to the quantity control value,
Wherein the determined quantity control value is determined to be a smaller value as the hydraulic pressure difference of the specific pipe is larger and is determined to be a larger value as the hydraulic pressure difference of the specific pipe is smaller. 14. The method of claim 13,
The water-cooling water circulation line is provided with a water meter for measuring the quantity of cooling / heating water supplied to the absorption type cold /
In the case of a malfunction state of the absorption type cold / hot apparatus or when the quantity of the cooling / heating water measured by the water meter is equal to or smaller than a preset critical quantity for preventing malfunction of the absorption type cold / Further comprising the step of operating in a malfunction prevention mode in which the quantity of cooling / heating water to be passed is increased so that the quantity of cooling / heating water pumped by the heating / cooling water pump can be increased. 16. The method of claim 15,
At both ends of the bypass valve, a water pressure sensor for measuring the water pressure is provided,
In the malfunction prevention mode,
The water quantity control value of the cooling / heating water pump is changed to a preset minimum water quantity control value for preventing malfunction of the absorption type cold /
Determining a valve opening value based on a difference between water pressures measured by the water pressure sensors at both ends of the bypass valve and a predetermined bypass critical water pressure difference for preventing malfunction of the absorption type cold /
Changing the determined valve open value to the bypass valve and changing the quantity of the cooling / heating water to be bypassed according to the changed valve opening value at the bypass valve,
Determining whether or not the water pressure difference of the specific pipe becomes smaller than the second specific value or more than the pipe critical water pressure difference after the quantity of the cooling /
When the hydraulic pressure difference of the specific pipe does not become smaller than the second predetermined numerical value or more than the pipe critical hydraulic pressure difference, it is possible to change the bypass pressure at the bypass valve based on the hydraulic pressure difference across the bypass valve and the bypass critical pressure difference The control unit resets the valve open value and terminates the malfunction prevention mode when the hydraulic pressure difference of the specific pipe is smaller than the second specific value by more than the pipe critical hydraulic pressure difference. 17. The method of claim 16,
The quantity of the cooling / heating water that is bypassed according to the specific valve open value determined in the malfunction prevention mode is larger than the quantity of the cooling / heating water that is bypassed according to the valve open value determined immediately before the specific valve open value in the malfunction prevention mode Wherein the air conditioning system comprises: 17. The method of claim 16,
And when the malfunction prevention mode is ended, enters the determining step, calculates an optimum quantity required in the air conditioning system based on the hydraulic pressure difference of the specific pipe and the pipe critical water pressure difference, Wherein the control unit determines the quantity control value for pumping the number of cooling / heating units by the number of the cooling / heating water numbers that are bypassed according to the valve open values changed and set in the control unit.

Images