CN103148564A - Method and device for realizing communication of controller of multi-split air conditioner unit for cooling and warming simultaneously - Google Patents

Abstract

The invention discloses a communication method for realizing simultaneous cooling and heating multi-connected air conditioner unit controllers. The controller includes a valve box, and a solenoid valve is arranged in the valve box. The communication method includes the following steps: connecting the valve box to Connect the communication line between the outdoor unit and the indoor unit of the air conditioning unit in series; virtualize the indoor unit and the outdoor unit through the valve box, so as to realize the communication between the internal and external units and obtain the information of the internal unit and the external unit; The box controls the switching state of the solenoid valve inside the valve box according to the acquired information of the internal unit and the external unit. The valve boxes are respectively virtualized as the internal unit and the external unit of the air conditioning unit, and the communication addresses are the actual addresses of the internal and external units. The valve box does not need to set the group number, which provides convenience for installation and after-sales maintenance; , outdoor unit information, and solenoid valve control according to needs, to realize the simultaneous cooling and heating functions of the air conditioning unit, without any protocol changes for indoor and outdoor air conditioning units, increasing the versatility of the indoor and outdoor units.

Description

Communication method and device for realizing simultaneous heating and cooling of multi-connected air-conditioning unit controllers

technical field

The invention relates to the technical field of simultaneous cooling and heating multi-connected air-conditioning systems, in particular to a communication method and device for realizing simultaneous cooling and heating multi-connected air-conditioning unit controllers.

Background technique

Multi-connection is commonly known as "one-to-many", which means that one outdoor unit is connected to two or more indoor units through piping. The outdoor unit is generally composed of an outdoor heat exchanger, a compressor and other refrigeration accessories. Generally, the air-cooled or water-cooled heat exchanger is adopted; the indoor unit is composed of a fan and a heat exchanger, and generally adopts the form of direct evaporative heat exchange. Compared with multiple household air conditioners, the sharing of the outdoor units of the multi-connected air conditioner system can effectively reduce the equipment cost, and can realize the centralized management of each indoor unit, and can start one indoor unit to run independently, or start multiple indoor units at the same time At present, it is increasingly widely used in small and medium-sized buildings and some public buildings.

In order to realize simultaneous cooling or heating of multiple indoor units of a multi-connected air-conditioning system, a valve box device is usually added between the outdoor unit and the indoor unit in the prior art to realize the simultaneous cooling and heating function. As shown in Figure 1, a multi-connected air conditioning system in the prior art is shown, which includes an external unit 101, three valve boxes and ten internal units 108, and the three valve boxes are respectively the first valve box 102, The second valve box 103 and the third valve box 104, each valve box is provided with a solenoid valve, the external unit 101 and each valve box are connected with a refrigeration pipe 105, a heating pipe 106 and a common pipe 107, the first valve The box 102 is connected with three internal machines (the first internal machine, the second internal machine and the third internal machine), the second valve box 103 is connected with two internal machines (the fourth internal machine and the fifth internal machine), and the third valve Box 104 is connected with five indoor units (sixth to tenth indoor units). The working principle of the multi-connected air-conditioning system: firstly, the working state of the valve box is determined according to the working mode of the air-conditioning indoor unit and the outdoor unit. There are two states: stop state and running state, and the running state is divided into cooling state and heating state; then, the outdoor unit controls the switch of the electromagnetic valve inside the valve box according to the operating mode of the indoor unit; finally, according to the switch of the solenoid valve, the Select refrigeration pipe or heating pipe. When the solenoid valve is disconnected, the valve box is connected to the refrigeration pipe. When the solenoid valve is closed, the valve box is selected to be connected to the heating pipe. When working, when the valve box is in a stopped state, it operates in the mode in which the connected indoor unit runs first. For example, the first indoor unit starts cooling first, and the outdoor unit controls the first indoor unit after receiving the cooling mode of the first indoor unit. The solenoid valve inside a valve box is in the disconnected state, and the current state of the first valve box is recorded as cooling state, and the current state of the first valve box is sent to all internal units connected to it; when the valve box is in the running state, The connected indoor unit must be in the same state as the valve box to run, otherwise it is in a waiting state. For example, after the first valve box is turned into a cooling state, the second and third indoor units connected to it can only be turned on for cooling. , if heating is turned on, it cannot run and is in a waiting state. However, the internal units connected to different valve boxes can operate in different states, for example, the first valve box 102 is in the cooling state, the first internal unit is turned on for cooling, the second and third internal units are shut down, and the electromagnetic The valve is disconnected, the second valve box 103 is in the shutdown state, the fourth and fifth indoor units are shut down, the solenoid valve inside the second valve box is disconnected, the third valve box 104 is in the heating state, the sixth indoor unit and the fifth The eighth internal mechanism heats up, the seventh internal machine, the ninth internal machine and the tenth internal machine stop, and the electromagnetic valve inside the third valve box is closed.

Since the valve box device is added to the simultaneous heating and cooling multi-connected air conditioning system, and each valve box can be connected to multiple indoor units, the outdoor unit needs to control and record the status of the valve box according to the information of the internal unit connected to the valve box, which is more than ordinary Online communication is complex. The current practice is to change the control program of the internal machine for the three-pipeline model, and realize the control function of the valve box for the solenoid valve through the internal machine. This approach has the following defects: 1. The electromagnetic valve mechanism needs to be controlled by the internal unit, so the installation position of the electromagnetic valve is limited and must be close to the indoor unit, so the work of the electromagnetic valve will cause noise problems; 2. The internal unit needs to be installed Set the group number, so that the external unit can accurately know the information of the internal unit connected to the specific valve box, so that the corresponding internal unit can control the solenoid valve. Setting the group number of the internal unit will bring troubles to installation and maintenance, and will cause problems. It is not easy to find after the failure; 3. It is necessary to change the internal unit control program of the three-pipeline model, so that the three-pipeline internal unit cannot be used in common with the ordinary air conditioner.

Contents of the invention

One object of the present invention is to provide a communication method for realizing the simultaneous cooling and heating of multi-connected air-conditioning unit controllers. The communication method can be virtualized as the indoor units of the air-conditioning unit through the valve box without affecting the original indoor and outdoor unit communication. unit and outdoor unit to realize normal communication between indoor unit and outdoor unit.

Another object of the present invention is to provide a communication method and device for realizing simultaneous heating and cooling of multi-connected air conditioner unit controllers. The valve box itself can automatically obtain the information of indoor and outdoor units, and automatically control the solenoid valves as needed.

Another object of the present invention is to provide a communication method and device for realizing the simultaneous cooling and heating multi-connected air-conditioning unit controller, the valve box of which is directly connected to the communication bus in series, reducing the requirements for the installation location and helping to solve the noise problem.

For reaching this purpose, the present invention adopts following technical scheme:

A communication method for realizing simultaneous cooling and heating multi-connected air conditioner unit controllers, the controller includes a valve box, and a solenoid valve is arranged in the valve box;

The communication method includes the following steps:

Step 100: Connect the valve box in series to the communication line between the outdoor unit and the indoor unit of the air conditioning unit;

Step 200: virtualize the indoor unit and the outdoor unit respectively through the valve box, so as to realize the communication between the indoor unit and the outdoor unit, and obtain the information of the indoor unit and the outdoor unit.

The valve box is connected to the communication bus in series. When the air conditioner unit is working normally, the outdoor unit communicates with the valve box, and the valve box communicates with the indoor unit. It is virtualized as the indoor unit and outdoor unit of the air conditioning unit to realize normal communication between the indoor unit and the outdoor unit.

When the valve box communicates with the outdoor unit, it is virtual as the indoor unit, and the communication address is also completely borrowed from the actual address of the indoor unit of the air conditioning unit. For the outdoor unit, the valve box is the indoor unit at this time, so the valve box itself does not need to be updated. The setting of the group number provides convenience for installation and after-sales maintenance.

As a preferred solution of the communication method, the communication method further includes step 300: the valve box controls the switch state of the solenoid valve inside the valve box according to the acquired information of the indoor unit and the outdoor unit.

The valve box itself independently controls the switch state of the solenoid valve in the valve box according to the acquired information of the indoor unit and the outdoor unit, so as to realize the simultaneous cooling and heating function of the air conditioning unit. This solution does not require any protocol changes between the indoor and outdoor units of the air conditioner, and can be completely consistent with the common indoor and outdoor units, which solves the problem of commonality between the three-pipe indoor unit and the ordinary air conditioner.

As a preferred solution of the communication method, the valve box has two communication loops, respectively realizing communication with the outdoor unit and the indoor unit.

As a preferred solution of the communication method, in the step 200, the valve box first virtualizes as an outdoor unit to communicate with the indoor unit, and after obtaining information about at least one indoor unit, it begins to virtualize as an indoor unit to communicate with the indoor unit. The outdoor unit communicates.

Through the above design, the data information of at least one indoor unit can be obtained first, and then the data information of the outdoor unit can be obtained. At this time, the valve box can control the switch of the solenoid valve according to the obtained information of the indoor and outdoor units, thereby realizing the air conditioning unit. Simultaneous heating and cooling functions.

As a preferred solution of the communication method, in the step 200, the rate at which the valve box is virtualized as an outdoor unit to establish a communication connection with the indoor unit is greater than the rate at which the valve box is virtualized as an indoor unit to establish a communication connection with the outdoor unit The speed of the communication connection.

Through the above design, the problem of communication delay between the outdoor unit and the valve box can be effectively solved when the air conditioning unit is initially powered on.

As a preferred solution of the communication method, when the valve box is virtualized as an outdoor unit to communicate with the indoor unit, the baud rate is 19200 bps; when the valve box is virtualized as an indoor unit to communicate with the outdoor unit, the baud rate is The bit rate is 9600bps, 4800bps or 2400bps.

As a preferred solution of the communication method, there are two or more outdoor units or valve boxes or indoor units.

As a preferred solution of the communication method, there are 1 to 64 valve boxes; and/or, each valve box is connected to 1 to 16 indoor units.

A device for realizing simultaneous heating and cooling multi-connected air-conditioning unit controllers, using the above-mentioned communication method.

The beneficial effects of the present invention are:

1. The valve box is directly connected to the communication bus in series, reducing the requirements for the installation location and helping to solve the noise problem;

2. The valve box is virtualized as the indoor unit and the outdoor unit of the air conditioning unit to realize normal communication between the indoor unit and the outdoor unit. The communication addresses are the actual addresses of the indoor and outdoor units. The valve box itself does not need to set the group number. Provides convenience for installation and after-sales maintenance;

3. The valve box itself can automatically obtain the information of the indoor and outdoor units, and automatically control the solenoid valve according to the needs, so as to realize the function of cooling and heating the air conditioning unit at the same time. Machines are exactly the same, which increases the versatility of internal and external machines.

Description of drawings

Fig. 1 is a structural schematic diagram of a multi-connected air-conditioning system in the prior art;

Fig. 2 is the execution flowchart of the communication method described in the present invention;

Fig. 3 is a schematic diagram of the communication connection of the air conditioning unit described in the embodiment;

Fig. 4 is a communication schematic diagram of the air conditioning unit described in the embodiment.

In Figure 1:

101. External unit; 102. First valve box; 103. Second valve box; 104. Third valve box; 105. Refrigeration pipe; 106. Heating pipe; 107. Public pipe; 108. Internal unit;

In Figure 3-4:

1. Outdoor unit; 2. First valve box; 3. Second valve box; 4. First indoor unit; 5. Second indoor unit; 6. Third indoor unit; 7. Fourth indoor unit; 8. Second indoor unit Fifth indoor unit; 9. Sixth indoor unit; 10. Communication chip.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

As shown in Figure 2, the communication method for realizing simultaneous heating and cooling multi-connected air-conditioning unit controllers according to the present invention includes the following steps:

S100. Connect the valve box to the communication bus between the indoor unit and the outdoor unit in series, and power on the unit;

S201. The valve box first simulates the outdoor unit to communicate with the connected indoor unit;

The outdoor unit sends an instruction to search and confirm the number of indoor units in the air conditioning system. At this time, the valve box does not reply to the outdoor unit until the valve box has established a connection with at least one indoor unit;

S202, the valve box establishes communication with at least one indoor unit;

S203. After the valve box establishes a communication connection with the indoor unit, the valve box virtualizes as the indoor unit to communicate with the outdoor unit, and then, the valve box virtualizes as the outdoor unit to communicate with the indoor unit;

S301. The valve box analyzes the obtained indoor unit and outdoor unit information;

S302. Determine whether the action of the solenoid valve needs to be controlled according to the communication content;

If it is determined that it is not necessary to control the action of the electromagnetic valve, then perform step S203, and if it is determined that it is necessary to control the action of the electromagnetic valve, then perform step S303;

S303. Control the action of the electromagnetic valve.

The communication method realizes the communication between the indoor unit and the outdoor unit by virtualizing the indoor unit and the outdoor unit through the valve box, and independently controls the solenoid valve through the information of the indoor unit and the outdoor unit obtained by the valve box, thereby realizing the control of the air conditioning unit. Simultaneous heating and cooling functions.

As shown in Figure 3, the air conditioning unit described in this embodiment includes an outdoor unit 1, two valve boxes and six indoor units, the two valve boxes are respectively the first valve box 2 and the second valve box 3, and the six The indoor units are respectively the first indoor unit 4, the second indoor unit 5, the third indoor unit 6, the fourth indoor unit 7, the fifth indoor unit 8 and the sixth indoor unit 9, wherein the first valve box 2 is connected with the The first indoor unit 4, the second indoor unit 5 and the third indoor unit 6 are connected, the second valve box is respectively connected with the fourth indoor unit 7, the fifth indoor unit 8 and the sixth indoor unit 9, and the first valve The box 2 is connected in series to the communication bus between the outdoor unit 1 and the first indoor unit 4, the second indoor unit 5, and the third indoor unit 6, and the second valve box 3 is connected in series to the outdoor unit 1 and the fourth indoor unit 7, the fifth The communication bus between the indoor unit 8 and the sixth indoor unit 9, when the unit is working normally, the outdoor unit 1 communicates with the first valve box 2, the first indoor unit 4, the second indoor unit 5, and the third indoor unit 6 respectively Communicate with the first valve box 2; outdoor unit 1 communicates with the second valve box 3; fourth indoor unit 7, fifth indoor unit 8, and sixth indoor unit 9 communicate with the second valve box 3 respectively.

As shown in Figure 4, two communication chips 10 are respectively arranged in the first valve box 2 and the second valve box 3, and each communication chip forms a communication loop, and communicates with the outdoor unit and the indoor unit respectively; Communication chip 10, and each indoor unit is also provided with a communication chip 10, when the unit is powered on, taking the first valve box as an example, the first valve box 2 and the first indoor unit 4, the second indoor unit 5, the first The connection between the three indoor units 6 is established through the communication chip, and the first valve box 2 is sequentially virtualized as the first indoor unit 4, the second indoor unit 5, and the third indoor unit 6 to communicate with the outdoor unit 1. For the outdoor unit, At this time, the first valve box is the above-mentioned three indoor units, and the first valve box is an indoor unit for the outdoor units, so there is no need to specially set the group number.

The above describes the technical principles of the present invention in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention, and cannot be construed as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can think of other specific implementation modes of the present invention without creative efforts, and these modes will all fall within the protection scope of the present invention.

Claims (9)

1. realize the communication means of changes in temperature multi-gang air-conditioner generator set controller simultaneously for one kind, described controller comprises valve cap, in described valve cap, magnetic valve is set, and it is characterized in that, described communication means comprises the steps:

Step 100: with the off-premises station of described valve cap series connection access air conditioner group and the order wire between indoor set;

Step 200: distinguish virtual be indoor set and off-premises station by valve cap, to realize the communication between indoor set, off-premises station, obtain the information of indoor set and off-premises station.

2. communication means according to claim 1, is characterized in that, also comprises step 300: valve cap is according to indoor set and the off-premises station information obtained, and the electromagnetic valve switch state of valve cap inside is controlled.

3. communication means according to claim 1, is characterized in that, described valve cap has two communication loops, realizes respectively communicating with described off-premises station and described indoor set.

4. the described communication means of according to claim 1 to 3 any one, it is characterized in that, in described step 200, described valve cap is first virtual to be communicated for off-premises station and described indoor set, after obtaining at least an indoor set information, begin virtually to communicate for indoor set and described off-premises station.

5. the described communication means of according to claim 1 to 3 any one, it is characterized in that, in described step 200, the virtual speed that establishes a communications link for off-premises station and described indoor set of described valve cap greater than described valve cap virtual be the speed that indoor set and described off-premises station establish a communications link.

6. communication means according to claim 5, is characterized in that, described valve cap is virtual for off-premises station when communicating by letter with described indoor set, and baud rate is 19200bps; Described valve cap is virtual for indoor set when communicating by letter with described off-premises station, and baud rate is 9600bps, 4800bps or 2400bps.

7. the described communication means of according to claim 1 to 6 any one, is characterized in that, described off-premises station or described valve cap or described indoor set are two or more.

8. the described communication means of according to claim 1 to 6 any one, is characterized in that, described valve cap has 1～64; And/or each described valve cap connects 1～16 interior machine.

9. realize the device of changes in temperature multi-gang air-conditioner generator set controller simultaneously for one kind, it is characterized in that, right to use requires 1 to the 8 described communication means of any one.

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