TWI468628B - Easy pipe arranging device, air conditioning equipment using the same and refrigerant leakage detecting method thereof - Google Patents

Description

Simple piping device, air conditioning device therewith and refrigerant leakage detecting method thereof

The present invention relates to a device for a simple piping device, and more particularly to an air conditioning device having the simple piping device and a refrigerant leakage detecting method thereof.

At present, in the market, whether it is a split type air conditioner, a one-to-many air conditioner or a Variable Refrigerant Flow (VRF), it needs to be filled with a refrigerant, and when the refrigerant is vaporized, heat is absorbed to make a closed space. The temperature inside is reduced to achieve a cooling effect.

Once the air conditioner's piping is not completely closed, refrigerant leakage is likely to occur. The main component of the refrigerant, chlorofluorocarbons, can cause eye, nose and throat irritation, and gradually cause symptoms of palpitations, vomiting, dizziness and headache. However, when the refrigerant leaks, the human body often does not feel conscious. If the human body is continuously exposed to CFCs, or if it is exposed to high concentrations of chlorofluorocarbons at the beginning, arrhythmia, brain and lung edema may occur, even in severe cases. Will die. Long-term exposure to the environment of refrigerant leakage can also cause motor nerve damage, memory and learning ability, and emotional instability.

Therefore, in the piping process of the air conditioner, the problem of refrigerant leakage must be taken care of. Also, it is necessary to periodically check the piping of the air conditioner for the risk of refrigerant leakage.

The present invention relates to a device for a simple piping device. When the simple piping device is applied to an air conditioning device, the piping operation of the air conditioning device can be simplified, and the refrigerant leakage detecting method of the air conditioning device can be simplified.

According to a first aspect of the present invention, a simple piping device for an air conditioning apparatus includes a first electromagnetic valve, a second electromagnetic valve, a first pressure gauge, a second pressure gauge, a first joint, and a first Two connectors and a control panel. The first solenoid valve is connected to a refrigerant line. The second solenoid valve is disposed in parallel with the first solenoid valve and is connected to a further refrigerant pipeline. The first pressure gauge is connected to the first solenoid valve. The second pressure gauge is disposed between the second solenoid valve and another refrigerant line. The first joint is connected to the first pressure gauge, and the first joint has a switch through hole to control the circulation of the refrigerant in the refrigerant circuit. The second joint is connected to the second solenoid valve, and the second joint has a further switch through hole to control the circulation of the refrigerant of the other refrigerant line. The control board is connected to the first solenoid valve and the second solenoid valve.

According to a second aspect of the present invention, an air conditioning apparatus is provided, comprising an outdoor unit, an indoor unit, and a simple piping device. The indoor unit is coupled to the outdoor unit, and the indoor unit includes a first control board. The simple piping device is disposed between the outdoor unit and the indoor unit, and includes a first electromagnetic valve, a second electromagnetic valve, a first pressure gauge, a second pressure gauge, a first joint, a second joint, and a Second control panel. The first solenoid valve is connected to a refrigerant circuit. The second solenoid valve is disposed in parallel with the first solenoid valve and is connected to a further refrigerant pipeline. The first pressure gauge is connected to the first solenoid valve. The second pressure gauge is disposed between the second solenoid valve and another refrigerant line. The first joint is connected between the first pressure gauge and an indoor unit, and the first joint has a switch through hole to control the circulation of the refrigerant in the refrigerant pipeline. The second joint is connected between the second solenoid valve and an indoor unit, and the second joint has a further switch through hole to control the circulation of the refrigerant of the other refrigerant line. The second control board connects the first electromagnetic valve and the second electromagnetic valve with the first control board.

According to a third aspect of the present invention, a refrigerant leakage detecting method for an air conditioning apparatus is provided, the method comprising the following steps. Providing an outdoor unit, an indoor unit and a simple piping device, the indoor unit is coupled to the outdoor unit and includes a first control board, and the simple piping device is disposed between the outdoor unit and the indoor unit, and the simple piping device The utility model comprises a first electromagnetic valve, a second electromagnetic valve, a first pressure gauge, a second pressure gauge, a first joint, a second joint and a second control board, wherein the first electromagnetic valve is connected to a refrigerant tube a second electromagnetic valve is disposed in parallel with the first electromagnetic valve and connected to a further refrigerant circuit, the first pressure gauge is connected to the first electromagnetic valve, and the second pressure gauge is disposed on the second electromagnetic valve and the other refrigerant Between the pipes. The first joint is connected between the first pressure gauge and an indoor unit, and the second joint is connected between the second electromagnetic valve and an indoor unit. The second control board is connected to the first electromagnetic valve and the second electromagnetic valve and the first control board. Turn on the outdoor unit and indoor unit. The first pressure gauge detects a first pressure of the refrigerant flowing out of the first solenoid valve and transmits the first pressure to the second control panel. The second pressure gauge detects a second pressure flowing out of the second solenoid valve and transmits the second pressure to the second control panel. The second control board receives the first pressure and the second pressure, and calculates a pressure difference between the first pressure and the second pressure. When the second control panel determines that the pressure difference is less than a preset value, the second control panel maintains the first and second solenoid valves in an open state. When the second control panel determines that the pressure difference is greater than or equal to a predetermined value, the second control panel closes the first and second solenoid valves.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

Please refer to FIG. 1 , which shows a schematic diagram of the air conditioner 1 . The air conditioner 1 includes an outdoor unit 40 that is coupled to the dispenser 30, the dispenser 32, and the dispenser 34. The distributor 30, the distributor 32, and the distributor 34 are for distributing the refrigerant to the indoor unit 20, the indoor unit 22, the indoor unit 24, the indoor unit 26, the indoor unit 23, the indoor unit 21, the indoor unit 27, and the indoor unit 25, respectively. . In this embodiment, the indoor units 20 to 27 are, for example, a personal small blower or other separate indoor air conditioner. The outdoor unit 40 is, for example, an air conditioner host, and may include a display panel (not shown) having a plurality of lights for displaying the status of the corresponding indoor unit.

As shown in FIG. 1, the outdoor unit 40 has a control board 402. The control board 402 is connected to the control board 342 of the distributor 34 by means of a two-wire transmission, and is transmitted by the control board 342 in two lines. The manner is connected to the control board 302 of the dispenser 30 and the control board 322 of the distributor 32. The two-wire transmission method is, for example, transmission using an RS-485 transmission line of a communication standard. Please refer to FIG. 2, which shows an enlarged view of the assembly 35 of the air conditioning apparatus 1 as shown in FIG. 1. As shown in Fig. 2, the assembly 35 of the air conditioner 1 includes a distributor 30 connected to the indoor unit 20, the indoor unit 22, the indoor unit 24, and the indoor unit 26. In this embodiment, the dispenser 30 is connected to the indoor unit 20 via a refrigerant hose 50 and a refrigerant hose 55 by a simple piping device 10.

Referring to FIG. 3, an enlarged schematic view of the simple piping device 10 connected to the indoor unit 20 as shown in FIG. 2 is shown. The simple piping device 10 includes an air filling valve 100, a first electromagnetic valve 102, a second electromagnetic valve 104, a first pressure gauge 106, a second pressure gauge 108, a first joint 110, and a second joint. 120 and a second control board 130. The air filling valve 100 is used to connect the refrigerant circuit 60 and the refrigerant pipe to the state in which the valves of the first solenoid valve 102 and the second solenoid valve 104 are closed during the installation process of the air conditioner 1 (shown in FIG. 1). After vacuuming 70, the valves of the first solenoid valve 102 and the second solenoid valve 104 are opened, and the operation of the air conditioner 1 is started, so that the refrigerant can be transported through the solenoid valve in the refrigerant line 60 and the refrigerant line 70.

As shown in FIG. 3, the first solenoid valve 102 is connected to the refrigerant line 70. The second solenoid valve 104 is disposed in parallel with the first solenoid valve 102, and the second solenoid valve 104 is coupled to another refrigerant line 60. The first pressure gauge 106 is coupled to the output of the first solenoid valve 102. The second pressure gauge 108 is coupled to the output of the second solenoid valve 104 and the second pressure gauge 108 is disposed between the second solenoid valve 104 and the other refrigerant conduit 60. The first joint 110 is coupled to the first pressure gauge 106 and the second joint 120 is coupled to the second solenoid valve 104. The second control board 130 has a first control end 1304 and a second control end 1306. The first control end 1304 is connected to the first solenoid valve 102, and the second control end 1306 is connected to the second solenoid valve 104.

In this embodiment, the first connector 110 includes a first female connector 1104 and a first male connector 1102. The second connector 120 includes a second female connector 1204 and a second male connector 1202. The first connector 110 and the second connector 120 are, for example, a diaphragm type quick connector for use as a switch through hole. When the first female connector 1104 and the first male connector 1102 are locked to each other, the diaphragm is opened. The switch through hole is opened, and at this time, the refrigerant of the refrigerant pipe 70 can pass. When the second female connector 1204 and the second male connector 1202 are locked to each other, the diaphragm is opened to open the switch through hole, so that the refrigerant of the refrigerant pipe 60 can pass. Therefore, the flow of the refrigerant in the refrigerant line 60 and the refrigerant line 70 can be controlled by the first joint 110 and the second joint 120. The first joint 110 and the second joint 120 may also be a hydraulic quick joint or a steel ball quick joint, and are not limited.

Referring to FIG. 4A, a detailed structural view of the first control board 202 of the indoor unit 20 according to an embodiment of the present invention is shown. As shown in FIG. 4A, the first control board 202 includes a DC fan (DC FAN) driving end 2020, an infrared receiving end 2023, a power input terminal 2024, a three-wire transmission interface 2026, a first two-wire transmission interface 2028, and a second two. The line transmission interface 2022. Referring to the first and fourth embodiments, the first two-wire transmission interface 2028 and the second two-wire transmission interface 2022 of the embodiment are respectively transmitted by using the RS-485 transmission line L3 and the transmission line L1 of the communication standard. . The infrared receiving end 2023 is for detecting heat radiation in the environment, thereby adjusting the operation of the indoor unit 20. The power input terminal 2024 is used to connect a voltage source of the city AC power. The city AC power is, for example, a power source between 110 and 220 volts (V). The three-wire transmission interface 2026 includes three transmission lines for connecting to the distributor 30 or the outdoor unit 40 for transmitting voltage and signals. The distributor 30 has a third control board 302. The outdoor unit 40 has a fourth control board 402. The third control board 302 or the fourth control board 402 can be connected to the three-wire transmission interface 2026 via the transmission line L2, or by a transmission line. L3 is coupled to the first two-wire transmission interface 2028.

Fig. 4B is a detailed structural view showing the second control board 130 of the simple piping device 10 according to an embodiment of the present invention. Referring to FIGS. 3 and 4B simultaneously, the second control board 130 includes a power input terminal 1300, a central processing unit 1302, a first control terminal 1304, a second control terminal 1306, and a third two-wire transmission interface 1308. The power input 1300 is the same as the power input 2024. The central processing unit 1302 is configured to calculate the received data and generate a control signal according to the operation result. The third two-wire transmission interface 1308 can be connected to the second two-wire transmission interface 2022 of the first control board 202 via the RS-485 transmission line L1 of the communication standard to transmit the control signal. The first control end 1304 is coupled to the first solenoid valve 102. The second control end 1306 is coupled to the second solenoid valve 104. The first control terminal 1304 and the second control terminal 1306 can transmit control signals to control the opening or closing of the first solenoid valve 102 and the second solenoid valve 104.

Figure 5 is a flow chart showing an embodiment of the present invention. Referring to Figures 3 and 5, the first pressure gauge 106 is, for example, a pressure transducer, and may include a pressure detector and a memory unit. The first pressure gauge 106 is disposed between the output end of the first electromagnetic valve 102 and the first joint 110. The second pressure gauge 108 is the same as the first pressure gauge 106, and is disposed at the output end of the second electromagnetic valve 104 and the refrigerant tube. Between the roads 60. In step S101, the outdoor unit 40 (shown in FIG. 1) and the indoor unit 20 are turned on to start the operation of the air conditioner 1. As shown in step S102, the first pressure gauge 106 measures the first pressure between the output end of the first electromagnetic valve 102 and the first joint 110, and converts the measured first pressure into a first value. Recording and transmitting the first value to the second control board 130. In step S103, the second pressure gauge 108 is configured to measure a second pressure between the output end of the refrigerant gas passing through the second solenoid valve 104 and the refrigerant line 60, and convert the measured second pressure into a second pressure. The value is recorded and the second value is transmitted to the second control board 130.

In step S104, after receiving the first value and the second value, the second control board 130 calculates the pressure difference between the first pressure and the second pressure, and compares the pressure difference between the gauge pressure and a preset value. The preset value is, for example, a gauge pressure difference of 0.5 kg/cm 2 (kg/cm ² G) or kilopascals (kPa). In step S105, the second control board 130 determines that the pressure difference is less than the preset value, and proceeds to step S107. The second control board maintains the first and second solenoid valves in an open state until the user actively performs the step S110 of shutting down. On the other hand, in step S106, the second control board 130 determines that the pressure difference is equal to or greater than the preset value, and proceeds to step S108, the second control board closes the first electromagnetic valve 102 by the first control end 1304, by The second control end 1306 closes the second solenoid valve 104. The second control board 130 transmits the first signal to the outdoor unit 40 (shown in FIG. 1) or the distributor 30 (shown in FIG. 1) to notify the outdoor unit 40 to stop supplying the refrigerant to the indoor according to the first signal. Machine 20. The second control board 130 transmits the second signal to the first control board 202, and the first control board 202 interrupts the operation of the indoor unit 20 according to the second signal. Next, in step S109, the display panel (not shown) of the outdoor unit 40 displays the corresponding lamp number abnormality of the indoor unit 20 to notify that it is to be repaired or to be detected. At this time, the other indoor units can still operate normally until the user performs the shutdown operation in step S110. In this way, not only can the refrigerant leakage detection method of the air-conditioning equipment be simplified, but also the risk of the refrigerant leakage continuing to operate can be avoided.

As described above, the simple piping device 10 of the above-described embodiment of the present invention has the following advantages:

1. A first joint 110 and a second joint 120 that can control the flow of refrigerant in the refrigerant line. When it is found that the indoor unit 20 needs to detect the refrigerant leakage of the indoor unit 20, the first male connector 1102 and the first female connector 1104 may be separated first, so that the switch through hole of the first connector 110 is closed. And detecting whether the refrigerant of the refrigerant line 70 has a leak. After the detection of the refrigerant pipe 70 is completed, the second male connector 1202 is separated from the second female connector 1204, so that the switch through hole of the second connector 120 is closed, and the refrigerant of the refrigerant pipe 60 is detected to be leaked. Simplify the detection method of refrigerant leakage.

2. Once the second control board 130 determines that the pressure difference is equal to or greater than the preset value and transmits the first signal to the outdoor unit 40, the outdoor unit 40 or the distributor 30 only stops supplying the refrigerant to the indoor unit 20 according to the first signal. Moreover, the second control board 130 transmits only the second signal to the first control board 202 of the indoor unit 20, thereby interrupting the operation of the indoor unit 20 without affecting the operation of the other indoor units.

3. The first control board 202 has a first two-wire transmission interface 2028 and a three-wire transmission interface 2026. Therefore, the corresponding transmission can be selected according to the interface of the control board 302 of the distributor 30 or the control board 402 of the outdoor unit 40. Interface for transmission. The simple piping device 10 of the embodiment of the present invention can be applied regardless of whether the interface of the control board 302 or the control board 402 is a two-wire or three-wire transmission interface, and is not limited to the label of the indoor unit and the outdoor unit. Different interface designs with different control panels. Therefore, it is possible to improve the connection control compatibility between the indoor unit and the outdoor unit of different brands.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

1‧‧‧Air conditioning unit

10‧‧‧Simple piping device

20~27‧‧‧ indoor unit

30, 32, 34‧‧‧ Distributor

35‧‧‧ components

40‧‧‧Outdoor machine

50, 55‧‧‧ hose

60, 70‧‧‧ refrigerant pipeline

102, 104‧‧‧ solenoid valve

106, 108‧‧‧ pressure gauge

110, 120‧‧‧ joints

130, 202, 302, 322, 342, 402‧‧‧ control panels

1102, 1202‧‧‧ male connectors

1104, 1204‧‧‧ female connectors

1302‧‧‧Central Processing Machine

1300, 2024‧‧‧ power input

1304, 1306‧‧‧ control end

1308, 2022, 2026, 2028‧‧ interface

2020‧‧‧DC fan (DC FAN) drive end

2023‧‧‧Infrared receiver

L1~L3‧‧‧ transmission line

S101~S110‧‧‧Steps

FIG. 1 is a schematic view of an air conditioning apparatus according to an embodiment of the invention.

2 is a schematic view showing a partial assembly of an air conditioning apparatus according to an embodiment of the invention.

FIG. 3 is a schematic view showing the connection of an indoor unit to a simple piping device according to an embodiment of the invention.

4A is a detailed structural view of a control panel of an indoor unit according to an embodiment of the present invention.

Fig. 4B is a view showing the detailed structure of a control panel of the simple piping device according to an embodiment of the present invention.

FIG. 5 is a flow chart showing an embodiment of the invention.

10. . . Simple piping device

20. . . Indoor unit

50, 55. . . hose

60, 70. . . Refrigerant line

100. . . Gas filling valve

102, 104. . . The electromagnetic valve

106, 108. . . pressure gauge

110, 120. . . Connector

130, 202. . . Control panel

1102, 1202. . . Male connector

1104, 1204. . . Female connector

1300, 2024. . . Power input

1302. . . Central processing machine

1304, 1306. . . Control terminal

1308, 2022. . . interface

L1. . . Transmission line

Claims (14)

An air conditioning apparatus includes: an outdoor unit; at least one indoor unit coupled to the outdoor unit, the indoor unit includes a first control board; and a simple piping device disposed between the outdoor unit and the indoor unit The simple piping device comprises: a first solenoid valve connected to a refrigerant pipeline; a second solenoid valve disposed in parallel with the first solenoid valve and connected to a further refrigerant pipeline; a first pressure gauge, Connecting the first solenoid valve; a second pressure gauge is disposed between the second solenoid valve and the other refrigerant pipeline; a first joint is connected between the first pressure gauge and an indoor unit, The first joint has a switch through hole for controlling the circulation of the refrigerant of the refrigerant circuit; a second joint is connected between the second electromagnetic valve and the indoor unit, and the second joint has a further switch type a through hole for controlling the circulation of the refrigerant of the other refrigerant pipe; and a second control plate connecting the first electromagnetic valve and the second electromagnetic valve with the first control plate. The air conditioning device of claim 1, wherein the simple piping device further comprises an air filling valve connected to the first electromagnetic valve or the second electromagnetic valve. For example, the air conditioning equipment mentioned in the scope of claim 1 includes a first hose and a second hose are connected between the first joint and the indoor unit, and the second hose is connected between the second joint and the indoor unit. The air conditioning device of claim 1, wherein the first pressure gauge and the second pressure gauge are pressure transducers. The air conditioner of claim 1, wherein the first joint comprises a first female connector and a first male connector, wherein the first male connector is connected to the first female connector in a locking manner. The second joint includes a second female connector and a second male connector, and the second male connector is coupled to the second female connector in a locking manner. The air conditioning device of claim 5, wherein when the first male connector is locked to the first female connector, the switch through hole is opened, and the second male connector is locked to the second female connector At the same time, the other switch through hole is opened. The air conditioning device of claim 5, wherein the first male connector and the first female connector are not locked, the switch through hole is closed, and the second male connector and the second female connector are not When the lock is engaged, the other switch through hole is closed. The air conditioning device of claim 1, further comprising at least one dispenser disposed between the outdoor unit and the indoor unit. The air conditioning device of claim 8, wherein the first control board comprises: a three-wire transmission interface; a first two-wire transmission interface; and a second two-wire transmission interface, wherein the outdoor unit Or the dispensing device There is a third control board corresponding to the three-wire transmission interface or the first two-wire transmission interface, and the second control panel of the indoor unit corresponds to the second two-wire transmission interface. The air conditioner of claim 9, wherein the second control board comprises: a third two-wire transmission interface connected to the second two-wire transmission interface; and a first control terminal connected to the a first solenoid valve; and a second control end connected to the second solenoid valve. A refrigerant leakage detecting method for an air conditioner includes: providing an outdoor unit, an indoor unit, and a simple piping device, wherein the indoor unit is coupled to the outdoor unit and includes a first control panel, and the simple piping device is Provided between the outdoor unit and the indoor unit, the simple piping device includes a first electromagnetic valve, a second electromagnetic valve, a first pressure gauge, a second pressure gauge, a first joint, and a second a first control valve and a second control circuit, the first electromagnetic valve is connected to a refrigerant circuit, the second electromagnetic valve is disposed in parallel with the first electromagnetic valve and is connected to another refrigerant circuit, the first pressure gauge is Connecting the first electromagnetic valve, the second pressure gauge is disposed between the second electromagnetic valve and the other refrigerant pipeline, the first joint is connected between the first pressure gauge and an indoor unit, a second connector is connected between the second solenoid valve and an indoor unit, the second control panel is connected to the first solenoid valve and the second solenoid valve and the first control board; the outdoor unit and the indoor unit are opened The first pressure gauge detects the first solenoid valve One of the first pressure refrigerant output, and the first transmission to the second control pressure; The second pressure gauge detects a second pressure of the refrigerant at the output end of the second solenoid valve and transmits the second pressure to the second control panel; the second control panel receives the first pressure and the second pressure Calculating a pressure difference between the first pressure and the second pressure; when the second control panel determines that the pressure difference is less than a predetermined value, the second control panel maintains the first and second electromagnetic valves An open state; and when the second control panel determines that the pressure difference is greater than or equal to the preset value, the second control panel closes the first and second solenoid valves. The refrigerant leakage detecting method of the air conditioning device of claim 11, wherein the second control panel determines that the pressure difference is greater than or equal to the preset, further comprising: transmitting, by the second control board, a first signal Up to the outdoor unit, the outdoor unit stops supplying the refrigerant to the indoor unit according to the first signal; and the second control board transmits a second signal to the first control board, the first control board is according to the first The second signal stops the indoor unit from running. The refrigerant leakage detecting method of the air conditioning apparatus according to claim 11, wherein the preset value is 0.5 kg/cm ² G. The refrigerant leakage detecting method of the air conditioning apparatus of claim 12, wherein the first joint comprises a first male joint and a first female joint, the first joint has a switch through hole, the second The connector includes a second male connector and a second female connector, the second connector having a further switch through hole, the method further comprising: separating the first male connector and the first female connector to close the switch a through hole for detecting a pressure of the refrigerant line; and separating the second male connector and the second female connector to close the other opening A closed through hole detects the pressure of the other refrigerant line.