CN210892059U - Central air-conditioning system - Google Patents

Abstract

The embodiment of the application provides a central air-conditioning system, the central air-conditioning system 20a is provided with a central air-conditioning host 22a and an end device 23, the central air-conditioning host 22a is provided with a second communication terminal 222 and a controller 223a, the second communication terminal 222 is connected with the end device 23, and the controller 223a is connected with the second communication terminal 222. From this, need not to set up the switch board among the central air conditioning system, consequently, remove the design and the installation of switch board from, greatly reduced by the design of switch board brought, make, installation and the cost of maintaining.

Description

Central air-conditioning system

Technical Field

The present application relates to the field of electromechanical technology.

Background

Currently, conventional central air conditioning systems require a control cabinet to implement joint control. The control cabinet aims to process the logic function of the system, control each terminal device and gather and upload data to an operation center.

Fig. 1 is a schematic view of a conventional central air conditioning system. As shown in fig. 1, the central air conditioning system 10 may have: a central controller 11, a control cabinet 12, a central air-conditioning host 13, end equipment 14, sensing equipment 15 and the like. The end equipment 14 may be, for example, a refrigeration pump, a cooling tower, or the like.

In the existing central air-conditioning system, the central air-conditioning host 13, the end equipment 14 and the sensing equipment 15 are all connected to the control cabinet 12, the controller in the control cabinet 12 collects data uploaded by the central air-conditioning host 13, the end equipment 14 and the sensing equipment 15, and the controller in the control cabinet 12 sends control signals to the central air-conditioning host 13 and the end equipment 14.

Thus, in the machine room in which the central air conditioning system is located, the control cabinet 12 monitors and controls the devices in the entire machine room.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

SUMMERY OF THE UTILITY MODEL

The inventor of the present application believes that the central air conditioning system 10 shown in fig. 1 requires a control cabinet 12, and thus requires a large amount of manpower and material resources, and is high in cost, for example: different control cabinets need to be designed for each machine room, so that the field data acquisition and the monitoring and control of each device are realized, and the design cost of the control cabinets is higher; in the design stage, the design of a control cabinet needs to be carried out according to the actual requirements of the central air-conditioning system, the quantity, the point location distribution and the like of controllers needed in the control cabinet are determined, and if the machine room is large, a plurality of control cabinets need to be designed; in addition, in the installation and operation stage, the control cabinet is not only required to be installed and debugged on site, and the maintenance cost is higher.

Embodiments of the present application provide a central air conditioning system and a control method thereof, in which an end device is connected to a central air conditioning host, and thus, the end device can communicate or be controlled via the central air conditioning host, and a control cabinet is not required to be provided in the central air conditioning system, so that design and installation of the control cabinet are omitted, and costs of design, manufacture, installation and maintenance caused by the control cabinet are greatly reduced.

According to a first aspect of the embodiments of the present application, there is provided a central air conditioning system having a central controller, a central air conditioning host, and an end device, the central air conditioning host having a first communication terminal, a second communication terminal, and a controller, the first communication terminal being connected to the central controller, the second communication terminal being connected to the end device, the controller being connected to the first communication terminal and the second communication terminal, the end device communicating with the central controller through the second communication terminal, the controller, and the first communication terminal.

According to a second aspect of embodiments of the present application, there is provided a control method of a central air conditioning system having at least 2 central air conditioning hosts, the method including:

calculating the sum of the refrigerating capacity or the heating capacity of the at least 2 central air-conditioning hosts according to the current operating parameters of the central air-conditioning hosts; and

and setting new operation parameters of each central air-conditioning host according to the optimal performance operating point of each central air-conditioning host, wherein the change range of the sum of the cooling capacity or the heating capacity does not exceed a preset range and the sum of the powers of the at least 2 central air-conditioning hosts is minimum.

The beneficial effect of this application lies in: the central air-conditioning system does not need to be provided with a control cabinet, so that the design and installation of the control cabinet are omitted, and the design, manufacture, installation and maintenance costs caused by the control cabinet are greatly reduced.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the present application include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

FIG. 1 is a schematic diagram of a prior art central air conditioning system;

FIG. 2 is a schematic view of a central air conditioning system of a first aspect of an embodiment of the present application;

FIG. 3 is another schematic view of a central air conditioning system of the first aspect of an embodiment of the present application;

fig. 4 is a schematic view of the relevant operation when the central air conditioning system of the first aspect of the embodiment of the present application performs energy saving control;

fig. 5 is a schematic view of a control method of a central air conditioning system of a second aspect of the embodiment of the present application;

fig. 6 is another schematic diagram of a control method of a central air conditioning system of a second aspect of the embodiment of the present application.

Detailed Description

The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.

In the embodiments of the present application, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "the" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

First aspect of the embodiments

A first aspect of an embodiment of the present application provides a central air conditioning system.

Fig. 2 is a schematic view of a central air conditioning system according to a first aspect of an embodiment of the present application, and as shown in fig. 2, a central air conditioning system 20 includes: a central controller 21, a central air-conditioning mainframe 22 and an end device 23.

As shown in fig. 2, the central air-conditioning main unit 22 includes a first communication terminal 221, a second communication terminal 222, and a controller 223.

In at least one embodiment, the first communication terminal 221 is connected to the central controller 21, the second communication terminal 222 is connected to the end device 23, and the controller 223 is connected to the first communication terminal 221 and the second communication terminal 222. The end device 23 communicates with the central controller 21 through the second communication terminal 222, the controller 223, and the first communication terminal 221.

According to the first aspect of the embodiment of the application, the end equipment is connected with the communication terminal of the central air-conditioning host, therefore, the end equipment can communicate with the central controller through the central air-conditioning host, and a control cabinet is not required to be arranged in the central air-conditioning system, so that the design and installation of the control cabinet are omitted, and the design, manufacturing, installation and maintenance costs caused by the control cabinet are greatly reduced.

In at least one embodiment, the central controller 21 may monitor other components of the central air conditioning system 20, for example, the central controller 21 obtains the operation parameter data of the central air conditioning host 22 and the end devices 23, sends out a control signal to control the operation of the central air conditioning host 22 and the end devices 23, and the like. The central controller 21 may be, for example, an Industrial Personal Computer (IPC), which may have, for example, a Human Machine Interface (HMI).

In at least one embodiment, as shown in fig. 2, the end equipment 23 can be, for example, at least one of a cooling tower 231, a cooling pump 232, a chilling pump 233. The present application may not be limited thereto, and the end device 23 may be other devices.

In at least one embodiment, the central air-conditioning unit 22 may have a cooling and/or heating function, wherein the central air-conditioning unit 22 may be a chiller unit when cooling, and the central air-conditioning unit 22 may be a heat pump unit when heating. The central air-conditioning main unit 22 may further include components for processing a refrigerant to perform cooling and/or heating functions, such as a compressor, a condenser, an evaporator, a four-way valve, and the like, in addition to the first communication terminal 221, the second communication terminal 222, and the controller 223.

In at least one embodiment, the connection between the first communication terminal 221 of the central air conditioner host 22 and the central controller 21 may be a wired connection or a wireless connection. The connection between the second communication terminal 222 of the central air-conditioning main unit 22 and the end device 23 may be a wired connection or a wireless connection. The wired connection may be, for example, a connection via a communication cable, and the wireless connection may be, for example, a connection based on bluetooth (Blue Tooth) technology or wireless fidelity (Wi-Fi) technology. Wherein, in case of wireless connection, the communication terminal may include a communication module having a wireless signal transceiving unit.

In the first aspect of the embodiment of the present application, the first communication terminal 221 and the second communication terminal 222 may perform signal receiving and transmitting, and the controller 223 may perform signal processing such as analysis on the signals received through the first communication terminal 221 and the second communication terminal 222, so as to obtain a signal to be transmitted, which may be transmitted via the second communication terminal 222 and the first communication terminal 221.

In at least one embodiment, the central air conditioner host 22 may receive a control signal sent by the central controller 21 through the first communication terminal 221, the controller 223 may analyze a first control signal for controlling the end device 23 from the control signal received by the first communication terminal 221, and the second communication terminal 222 sends the first control signal analyzed by the controller 223 to the end device 23. The first control signal may have flag information pointing to the second communication terminal, and the flag information may be address information of the second communication terminal 222, for example.

For example, each second communication terminal 222 of the central air-conditioning master 22 may be provided with a corresponding address, the control signal sent by the central controller 21 may include address information and control information corresponding to the address information, and when the controller 223 analyzes that the address information included in the control signal points to the address of a certain second communication terminal 222, the controller 223 takes the control information corresponding to the address information as a first control signal and sends the first control signal from the second communication terminal 222.

The end device 23, upon receiving the first control signal through the second communication terminal 222, may adjust the operation of the end device 23 according to the first control signal.

In at least one embodiment, the controller 223 may further analyze a second control signal for controlling the central air-conditioning host 22 from the control signal received by the first communication terminal 221, and the controller 223 may control the operation of the central air-conditioning host 22 according to the second control signal. The second control signal may have flag information pointing to the central air-conditioning host 22, and the flag information may be, for example, address information of the central air-conditioning host 22. This enables the central controller 21 to control the central air-conditioning master unit.

For example, the central air-conditioning host 22 may be provided with a corresponding address, the control signal sent by the central controller 21 may include address information and control information corresponding to the address information, when the controller 223 analyzes that the address information included in the control signal points to the address of the central air-conditioning host 22, the controller 223 uses the control information corresponding to the address information as a second control signal, and the controller 223 controls the central air-conditioning host 22 according to the second control signal, where the control may be, for example, increasing or decreasing the current supplied to the compressor.

In at least one embodiment, the central air conditioner host 22 may receive a feedback signal sent by the end device 23 through the second communication terminal 222, the controller 223 may analyze a first feedback signal fed back to the central controller 21 from the feedback signal received by the second communication terminal 222, and the first communication terminal 221 sends the first feedback signal analyzed by the controller 223 to the central controller 21. The first feedback signal may have flag information pointing to the central controller 21, and the flag information may be, for example, address information of the central controller 21.

For example, the feedback signal sent by the end device 23 may include address information and feedback information corresponding to the address information, and when it is analyzed that the address information included in the feedback signal points to the address of the central controller 21, the controller 223 takes the feedback information corresponding to the address information as a first feedback signal and sends the first feedback signal from the first communication terminal 221 to the central controller 21.

In addition, in at least one embodiment, the operating parameters of the central air conditioner master 22 may be transmitted to the central controller 21 through the first communication terminal 221.

The central controller 21 may monitor the operation state of the end devices 23 and/or the central air-conditioning main unit 22 according to the first feedback signal and/or the operation parameter of the central air-conditioning main unit 22, and generate a control signal for controlling the end devices 23 and/or the central air-conditioning main unit 22 according to the first feedback signal and/or the operation parameter of the central air-conditioning main unit 22, in case of receiving the first feedback signal and/or the operation parameter of the central air-conditioning main unit 22 through the first communication terminal 221.

In at least one embodiment, the controller 223 may further analyze a second feedback signal fed back to the central air conditioner host 22 from the feedback signal received by the first communication terminal 221, and the controller 223 may control the operation of the central air conditioner host 22 and/or the end device 23 according to the second feedback signal. The second feedback signal may have flag information pointing to the central air-conditioning host 22, and the flag information may be, for example, address information of the central air-conditioning host 22. Therefore, the central air-conditioning host 22 can monitor and control the end equipment 23, and particularly, in the case that the central controller 21 fails, the central air-conditioning host 22 and the end equipment 23 can communicate with each other through the second communication terminal 222, that is, the end equipment 23 transmits a second feedback signal to the central air-conditioning host 22, and the central air-conditioning host 22 (for example, the controller 223) generates a third control signal for controlling the end equipment 23 according to the second feedback signal and transmits the third control signal to the end equipment 23 through the second communication terminal 222, so that the central air-conditioning system can be stably and reliably operated.

The feedback information included in the second feedback signal may be the same as or different from the feedback information included in the first feedback signal, and the control information included in the third control signal generated by the controller 223 according to the second feedback signal may be the same as or different from the control information included in the first control signal. As shown in fig. 2, in at least one embodiment, the central air conditioning system 20 may also have an operating condition detection device 24. The operation state detection device 24 is used to detect operation state data of the central air conditioning system 20. The operating state detecting device 24 is connected to the central controller 21, and transmits the detected operating state data to the central controller 21.

In at least one embodiment, the operating condition detection device 24 may be, for example, a sensor. The operation state data may be, for example, the water inlet and outlet temperature of the freezing pipe, the water inlet and outlet temperature of the cooling pipe, the flow rate of the refrigerant, and/or the like.

As shown in fig. 2, in at least one embodiment, the central air conditioning system 20 further has a host performance calculator 25, and the host performance calculator 25 may be connected to the central controller 21, so that the central controller 21 may transmit the received operation parameters of the central air conditioning host 22 to the host performance calculator 25, and the host performance calculator 25 may transmit a load setting signal to the central controller 21, and the central controller 21 generates a control signal according to the load setting signal and transmits the control signal to the central air conditioning host 21.

For example, the central air conditioning system 20 may have 1 central air conditioning host 22, and the host performance calculator 25 may calculate the cooling capacity or the heating capacity of the central air conditioning host 22 according to the current operating parameters of the central air conditioning host 22, and set new operating parameters of the central air conditioning host 22 according to the optimal performance operating point of the central air conditioning host 22 under the cooling capacity or the heating capacity, with the change range of the cooling capacity or the heating capacity not exceeding a predetermined range and the power of the central air conditioning host 22 being minimum, the new operating parameters being sent to the central controller 21 as the load setting signal. The variation range of the cooling capacity or the heating capacity does not exceed a predetermined range, and may refer to: the floating range of the cooling capacity or the heating capacity is within ± 10% of the calculated cooling capacity or the heating capacity of the central air-conditioning main unit 22.

For another example, the central air conditioning system 20 may have at least 2 central air conditioning hosts 22, each of the central air conditioning hosts 22 is connected to the central controller 21, and the host performance calculator 25 may calculate the sum of the cooling capacities or the heating capacities of the central air conditioning hosts 22 according to the current operating parameters of each of the central air conditioning hosts 22, and set new operating parameters of each of the central air conditioning hosts 22 according to the optimal performance operating point of each of the central air conditioning hosts 22 with the objective that the variation range of the sum of the cooling capacities or the heating capacities does not exceed a predetermined range and the sum of the powers of the central air conditioning hosts 22 is minimum, the new operating parameters being transmitted to the central controller 21 as the load setting signal. The variation range of the cooling capacity or the heating capacity does not exceed a predetermined range, and may refer to: the floating range of the cooling capacity or the heating capacity is within ± 10% of the calculated cooling capacity or the heating capacity of the central air-conditioning main unit 22.

In one embodiment, the host performance calculator 25 may extract a plurality of performance curves for each central air conditioning host 22 around the current operating parameters, and finds the most suitable performance curve of the central air-conditioning host 22 from the multiple performance curves respectively corresponding to the central air-conditioning host 22, wherein, the performance curve is a curve of the relationship between the cooling capacity or the heating capacity of the central air-conditioning mainframe 22 and the load, and the operation parameter corresponding to the optimal performance operating point of the performance curve is taken as the new operation parameter of the central air-conditioning mainframe 22, so that each central air-conditioning mainframe 22 operates at the optimal performance operating point, and, the variation range of the sum of the cooling capacity and the heating capacity of the plurality of central air-conditioning hosts 22 does not exceed the predetermined range, and the sum of the powers of the plurality of central air-conditioning hosts 22 is the minimum value, thereby achieving the energy-saving effect of the central air-conditioning system. The variation range of the total amount of cooling or heating does not exceed a predetermined range, and may refer to: the floating range of the sum of the cooling capacity or the heating capacity is within ± 10% of the calculated sum of the cooling capacity or the heating capacity of the plurality of central air-conditioning hosts 22. The host performance calculator 25 may select the performance curve with the goal that the sum of the cooling capacities or the heating capacities of the plurality of central air-conditioning hosts 22 is not changed and the sum of the powers of the plurality of central air-conditioning hosts 22 is minimized when selecting the most suitable performance curve for each central air-conditioning host 22.

Fig. 4 is a schematic diagram of the operation of the central air conditioning system according to the first aspect of the embodiment of the present application in the energy saving control. As shown in fig. 4, the correlation operation may include:

in operation 301, the load of each central air-conditioning main unit 22 is adjusted according to the system load. For example, when the system load increases, the central air-conditioning host 22 is powered on if the cooling capacity or the heating capacity of the current central air-conditioning host 22 is not sufficient to match the current load, and when the system load decreases, the central air-conditioning host 22 is powered off step by step if the cooling capacity or the heating capacity of the current central air-conditioning host 22 is excessive.

In operation 302, the central air conditioning system 20 is operated stably for a predetermined time, for example, the central air conditioning system 20 is operated to the target water temperature condition and is operated stably for 15 minutes.

In operation 303, the central processor 21 transmits the current operation parameters of the plurality of central air conditioner hosts 22 to the host performance calculator 25.

In operation 304, the host performance calculator 25 calculates the sum of the cooling capacity or the heating capacity of the plurality of central air-conditioning hosts 22 according to the current operation parameters of the respective central air-conditioning hosts 22.

In operation 305, the master performance calculator 25 calculates new operating parameters of each central air conditioning master 22, which may include the operating current of the master, to adjust the load of the central air conditioning master 22. For example, the host performance calculator 25 sets new operating parameters of each of the central air-conditioning hosts 22 with the aim that the variation range of the sum of the cooling capacity or the heating capacity does not exceed a predetermined range and the sum of the powers of at least 2 central air-conditioning hosts is minimized, according to the optimal performance operating point of each of the central air-conditioning hosts 22.

In operation 306, the master performance calculator 25 transmits the calculation result of the new operation parameter of each central air-conditioning master 22 to the central controller 21, generates a control signal by the central controller 21, and transmits the control signal to each central air-conditioning master 22.

After operation 306 is completed, operation 301 may be returned to continually adjust the operating parameters of each central air conditioning host 22 until the actual operating parameters reach the operating parameters that result in the most energy efficient system.

In the existing central air-conditioning system, the operation of the terminal equipment such as a cooling pump and a cooling tower is usually controlled according to the difference between the current system demand load and the preset load, so as to realize the energy saving of the central air-conditioning system. For example, the frequency conversion control and the number control are carried out on the cooling pumps, so that the cooling pumps are always operated near the optimal efficiency point, or the frequency conversion control and the number control are carried out on the cooling towers, so that the power consumption of the cooling towers is reduced, the power consumption of a central air-conditioning system is reduced, and the energy conservation of the system is realized.

However, since the central air conditioning system consumes the largest amount of energy as the main unit of the central air conditioning system, energy saving control of the end equipment such as a cooling pump and a cooling tower is not an optimal energy saving scheme. In addition, the existing energy-saving scheme can be implemented only by determining the adjusted empirical parameters according to the conditions of actual projects and the field judgment of professionals, so that the implementation difficulty of the scheme is high.

In the embodiment of the present application, the central air conditioning system 20 uses the central air conditioning host as a main object of the energy saving control, so that the energy saving control of the central air conditioning system can be simply and effectively realized.

Furthermore, it should be noted that the host performance calculator 25 in the embodiment of the present application may not be limited to be provided in the central air conditioning system 20, and the host performance calculator 25 may be provided in a central air conditioning system having other system configurations, for example, the host performance calculator 25 may be provided in the central air conditioning system 10 shown in fig. 1 and connected to the central controller 11, wherein the manner of performing energy saving control by the host performance calculator 25 may be the same.

In at least one embodiment, the central controller 21 and the host performance calculator 25 shown in fig. 2 may be hardware circuits independent from each other, or the same hardware circuit may perform the functions of the two units, for example, the same hardware circuit may implement the functions of the central controller 21 and the host performance calculator 25 by running different software modules.

Fig. 3 is another schematic diagram of a central air conditioning system of the first aspect of an embodiment of the present application. The central air conditioning system 20a shown in fig. 3 is different from the central air conditioning system 20 shown in fig. 2 in that the controller 223a of the central air conditioning system 20a integrates the functions of the controller 223 and the central controller 21 of the central air conditioning system 20 in the central air conditioning system 22.

In the following, components in fig. 3 different from those in fig. 2 will be described, and the same portions have the same reference numerals, and the description thereof will be omitted.

As shown in fig. 3, the central air conditioning system 20a includes a central air conditioning main unit 22a and a terminal device 23. The central air-conditioning main unit 22a has a second communication terminal 222 and a controller 223a, the second communication terminal 222 is connected to the end device 23, the controller 223a is connected to the second communication terminal 222, and the end device 23 communicates with the controller 223a through the second communication terminal 222.

In at least one embodiment, the controller 223a may send a first control signal for controlling the end device 23 to the end device 23 through the second communication terminal 222, and furthermore, the controller 223a may also receive a first feedback signal sent by the end device 23 to the controller 223a from the end device 23 through the second communication terminal 222. The first feedback signal and the first control signal are defined in the same manner as described above with reference to the central air conditioning system 20.

In addition, the controller 223a may also control the operation of the central air-conditioning unit 22a, for example, control the current of a compressor in the central air-conditioning unit 22 a.

In at least one embodiment, the controller 223a may also record operating parameters of the central air conditioning host 22 a.

As shown in fig. 3, the central air conditioning system 20a may also have an operating condition detecting device 24. The operation state detection device 24 may be connected to the central air-conditioning main unit 22a through a third terminal 224 provided to the central air-conditioning main unit 22a, and the connection may be a wired connection or a wireless connection.

As shown in fig. 3, the central air conditioning system 20a may also have a host performance calculator 25. The host performance calculator 25 may be connected to the central air-conditioning host 22a through a fourth terminal 225 provided to the central air-conditioning host 22a, and the connection may be a wired connection or a wireless connection.

In at least one embodiment, the controller 223a and the host performance calculator 25 shown in fig. 3 may be hardware circuits independent from each other, or the same hardware circuit may perform the functions of the two units, for example, the same hardware circuit may implement the functions of the controller 223a and the host performance calculator 25 by running different software modules. In the case where the functions of the controller 223a and the host performance calculator 25 are performed by the same hardware circuit, the central air-conditioning host 22a may not have the fourth terminal 225.

According to the first aspect of the embodiment of the application, the end equipment is connected with the communication terminal of the central air-conditioning host, so that the end equipment can be controlled and communicated through the central air-conditioning host, and a control cabinet is not required to be arranged in a central air-conditioning system, so that the design and installation of the control cabinet are omitted, and the design, manufacturing, installation and maintenance costs caused by the control cabinet are greatly reduced. In addition, the host performance calculator in the first aspect of the embodiment of the present application has the central air-conditioning host as a main object of energy-saving control, and thus can simply and effectively realize energy-saving control of the central air-conditioning system.

Second aspect of the embodiments

A second aspect of the embodiments of the present application provides a control method of a central air conditioning system, corresponding to the host performance calculator 25 of the first aspect of the embodiments.

Fig. 5 is a schematic view of a control method of a central air conditioning system having 1 central air conditioning host according to a second aspect of an embodiment of the present application. As shown in fig. 5, the method 400 includes the following operations:

operation 401, calculating a cooling capacity or a heating capacity of a central air-conditioning host according to current operating parameters of the central air-conditioning host of a central air-conditioning system; and

operation 402, according to the optimal performance operating point of the central air-conditioning host under the cooling capacity or the heating capacity, setting new operation parameters of the central air-conditioning host with the target that the variation range of the cooling capacity or the heating capacity does not exceed a preset range and the power of the central air-conditioning host is minimum.

Fig. 6 is another schematic diagram of a control method of a central air conditioning system having at least 2 central air conditioning hosts according to a second aspect of an embodiment of the present application. As shown in fig. 6, the method 500 includes the following operations:

operation 501, calculating the sum of the cooling capacity or the heating capacity of the at least 2 central air-conditioning hosts according to the current operating parameters of the central air-conditioning hosts; and

operation 502, according to the optimal performance operating point of each of the central air-conditioning hosts, setting new operation parameters of each of the central air-conditioning hosts with the goals that the variation range of the sum of the cooling capacity or the heating capacity does not exceed a preset range and the sum of the powers of the at least 2 central air-conditioning hosts is minimum.

For the description of the operations in the method 400 and the method 500, reference may be made to the description of the host performance calculator 25 in the first aspect of the embodiment.

According to the second aspect of the embodiment of the present application, the central air-conditioning master is taken as a main object of the energy-saving control, so that the energy-saving control of the central air-conditioning system can be simply and effectively realized.

Embodiments of the present application also provide a computer-readable program, wherein when the program is executed in a host performance calculator or an air conditioning system, the program causes the host performance calculator or the central air conditioning system to execute the control method of the central air conditioning system according to the second aspect of the embodiments.

The embodiment of the present application further provides a storage medium storing a computer readable program, wherein the storage medium stores the computer readable program, and the computer readable program enables a host performance calculator or an air conditioning system to execute the control method of the central air conditioning system according to the second aspect of the embodiment.

The apparatus described in connection with the embodiments of the application may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. For example, one or more of the functional block diagrams and/or one or more combinations of the functional block diagrams illustrated in fig. 2 and 3 may correspond to respective software modules of a computer program flow or may correspond to respective hardware modules. These software modules may respectively correspond to the respective operations shown in the first aspect of the embodiment. These hardware modules may be implemented, for example, by solidifying these software modules using a Field Programmable Gate Array (FPGA).

A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that is insertable into the mobile terminal. For example, if the electronic device employs a MEGA-SIM card with a larger capacity or a flash memory device with a larger capacity, the software module may be stored in the MEGA-SIM card or the flash memory device with a larger capacity.

One or more of the functional block diagrams and/or one or more combinations of the functional block diagrams described with respect to fig. 2, 3 may be implemented as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof designed to perform the functions described herein. One or more of the functional block diagrams and/or one or more combinations of the functional block diagrams described with respect to fig. 2, 3 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP communication, or any other such configuration.

The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the teachings herein and are within the scope of the present application.

Claims (14)

1. A central air conditioning system, the central air conditioning system has central controller, central air conditioning host computer, and end equipment, its characterized in that:

the central air-conditioning host machine is provided with a first communication terminal, a second communication terminal and a controller,

the first communication terminal is connected with the central controller,

the second communication terminal is connected to the end device,

the controller is connected with the first communication terminal and the second communication terminal,

the end device communicates with the central controller through the second communication terminal, the controller, and the first communication terminal.

2. The central air conditioning system of claim 1,

the central air-conditioning host machine receives a control signal sent by the central controller through the first communication terminal,

the controller parses a first control signal for controlling the end device from the control signal,

the second communication terminal sends the first control signal to the end device.

3. The central air conditioning system of claim 2,

the controller also analyzes a second control signal for controlling the central air-conditioning host from the control signal,

and the controller controls the operation of the central air-conditioning host according to the second control signal.

4. The central air conditioning system of claim 1,

and the operating parameters of the central air-conditioning host are sent to the central controller through the first communication terminal.

5. The central air conditioning system of claim 1,

the central air-conditioning host machine receives a feedback signal sent by the terminal equipment through the second communication terminal,

the controller resolves a first feedback signal from the feedback signal for feedback to the central controller,

the first communication terminal sends the first feedback signal to the central controller.

6. The central air conditioning system of claim 5,

the controller also analyzes a second feedback signal fed back to the central air-conditioning host from the feedback signal,

and the controller controls the operation of the central air-conditioning host and/or the terminal equipment according to the second feedback signal.

7. The central air conditioning system according to any one of claims 1 to 6,

the central air conditioning system also has an operation state detection device,

the operation state detection device is used for detecting operation state data of the central air-conditioning system,

and the running state detection equipment sends the running state data to the central controller.

8. The central air conditioning system according to any one of claims 1 to 6,

the central air-conditioning system is also provided with a host performance calculator, and the host performance calculator is connected with the central controller.

9. The central air conditioning system of claim 8,

the central air-conditioning system is provided with at least 2 central air-conditioning main machines.

10. The utility model provides a central air conditioning system, central air conditioning system has central air conditioning host computer and end equipment which characterized in that:

the central air-conditioning host machine is provided with a second communication terminal and a controller,

the second communication terminal is connected to the end device,

the controller is connected with the second communication terminal,

the end device communicates with the controller through the second communication terminal,

wherein the controller transmits a first control signal for controlling the end device to the end device through the second communication terminal,

the controller receives a first feedback signal from the end device through the second communication terminal, the first feedback signal being sent by the end device to the controller.

11. The central air conditioning system of claim 10,

and the controller records the operation parameters of the central air-conditioning host.

12. Central air conditioning system according to claim 10 or 11,

the central air conditioning system also has an operation state detection device,

the operation state detection device is used for detecting operation state data of the central air-conditioning system,

the operating state detecting device sends the operating state data to the controller.

13. Central air conditioning system according to claim 10 or 11,

the central air-conditioning system is also provided with a host performance calculator, and the host performance calculator and the controller are independent hardware circuits or the same hardware circuit.

14. The central air conditioning system of claim 13,

the central air-conditioning system is provided with at least 2 central air-conditioning main machines.

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