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Error wiring detector for air conditioner

A detection device, air conditioner technology, applied in the direction of measuring devices, emergency protection circuit devices, measuring electricity, etc., can solve problems such as overheating of wires

Inactive Publication Date: 2003-09-24
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the existing air conditioner is constructed as above, it is necessary to confirm whether the indoor power supply wiring is correctly wired during the installation process. However, sometimes the air conditioner is connected without confirming whether the indoor power supply wiring is properly wired. PROBLEM: A short circuit occurs; and even if the automatic overcurrent circuit breaker is installed at the required point in the circuit in such a way that it can protect the electric wire and the electromechanical equipment from overheating caused by the overcurrent, the value of the breaking current of the automatic overcurrent circuit breaker does not affect the electric wire. If the rated current value is not appropriate, it may cause problems such as overheating of the wire due to overcurrent due to incorrect wiring.

Method used

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  • Error wiring detector for air conditioner
  • Error wiring detector for air conditioner

Examples

Experimental program
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Effect test

Embodiment 1

[0033] figure 1 It is a power supply wiring diagram including a miswiring detecting device for an air conditioner according to Embodiment 1 of the present invention, figure 2 is a power supply wiring diagram of an air conditioner including a miswiring detection device showing details of an electric signal detection device, image 3 It is a power supply wiring diagram of the wrong wiring detection device of the air conditioner including the details of the signal detection device and the determination device, Figure 4 wiring diagram diagram for wiring the power supply, Figure 5 It is a waveform diagram of the detection signal of the electrical signal detection device.

[0034] figure 1 Among them, 1 is the primary power supply for single-phase AC, 2 is the grounding resistance between the N-phase of the primary power supply and the ground, 3 is the ground point, 4 is the power wiring from the primary power supply, and 5 is the socket for the air conditioner. 6 is the pl...

Embodiment 2

[0076] Image 6 It is a power supply wiring diagram including the miswiring detecting device of the air conditioner according to Embodiment 2 of the present invention. In Embodiment 1, the electric signal detection device composed of a photocoupler was shown, but in this embodiment, the electric signal detection device is composed of a resistor or a capacitor.

[0077] Image 6 In, for example 1 image 3 The same parts or corresponding parts are marked with the same symbols, and their explanations are omitted. In the electrical signal detection device 18, 59 is a voltage detection circuit for detecting the voltage of the resistor 25 connected between the L phase and E, and 60 is a voltage detection circuit for detecting the voltage of the resistor 32 connected between the N phase and E. Other than that, the electrical signal detection device 18 is the same as the first embodiment.

[0078] In this configuration, when a voltage is applied between the L phase and E, the volt...

Embodiment 3

[0081] Figure 7 It is a power supply wiring diagram including a miswiring detection device for an air conditioner according to Embodiment 3 of the present invention. As shown in Embodiment 2, when the resistors 25 and 32 are used in the electrical signal detection device, since resistance value = insulation resistance value, in order to satisfy various safety standards based on electrical equipment and electrical components (electrical appliances) Management law and IEC, UL, CSA, TUV, BSI and other foreign electrical safety standards, etc.) must be connected to a relatively large resistance value. Due to the disadvantages of noise deterioration, capacitors 22 and 29 are used instead of resistors. 25, 32.

[0082] The resistance value is reduced by connecting a capacitor, or the insulation resistance can be ensured without connecting a resistor, and the safety standard can be satisfied by obtaining an appropriate capacitance value by calculation.

[0083] In addition, since ...

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PUM

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Abstract

Such a miswiring detection device for an air conditioner is obtained, which detects miswiring of the power supply wiring of the primary power supply of the air conditioner with a simple structure, and notifies whether there is miswiring through a display or an alarm sound, etc., so that troubles can be prevented. Equipped with: electrical signal detection device 18, which detects a wire (hereinafter referred to as N phase) on the ground side wire or neutral wire from the primary power supply (1), a voltage side in a single-phase three-wire 200V power supply, and the ground wire (below, abbreviated as E); and each electric signal between the voltage side wire or another wire other than the N phase of the voltage side in the single-phase three-wire 200V power supply (below, referred to as L phase), and E; the determination device 19. Based on the electric signal from the electric signal detection device 18, it is judged whether there is any wrong wiring of the power wiring connected to the power terminal board;

Description

technical field [0001] The present invention relates to an air conditioner miswiring detection device for avoiding miswiring of a power supply wiring connected to an air conditioner to obtain an air conditioner with improved safety. Background technique [0002] Figure 11 Shows the normal power supply wiring diagram of the existing air conditioner, 1 is the primary power supply for single-phase AC, 2 is the grounding resistance existing between the N phase of the primary power supply and the ground, 3 is the ground point, and 4 is the power supply from the primary power supply Wiring, 5 is the socket for the air conditioner, 6 is the plug of the air conditioner, 7 is the power cord of the air conditioner, 8 is the indoor unit of the air conditioner, 9 is the power terminal board of the indoor unit 8, and 10 is the control of the indoor unit 8 Substrate, 11 is the power wiring of the outdoor unit 12 of the air conditioner wired by the indoor unit 8, 12 is the outdoor unit of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/02G01R31/55
CPCH02H11/002G01R31/52G01R31/55
Inventor 山田浩尉望月重伸片山和幸风间和广
Owner MITSUBISHI ELECTRIC CORP
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