CN208174269U - Power supply circuit, air conditioner inner fan control circuit and air conditioner based on solid-state relay - Google Patents
Power supply circuit, air conditioner inner fan control circuit and air conditioner based on solid-state relay Download PDFInfo
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- CN208174269U CN208174269U CN201820064705.3U CN201820064705U CN208174269U CN 208174269 U CN208174269 U CN 208174269U CN 201820064705 U CN201820064705 U CN 201820064705U CN 208174269 U CN208174269 U CN 208174269U
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- state relay
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Abstract
The utility model discloses a kind of power supply circuit based on solid-state relay, air conditioner inner fan control circuit and air conditioners, including：Power supply module based on solid-state relay, for being connected with load；Controllable switch module, the input terminal of the controllable switch module with AC power source for connecting, the output end of the controllable switch module is connect with the power supply module, for disconnecting the connection of the AC power source Yu the power supply module when the load is off working state.The connection that the input terminal and power supply of solid-state relay can be disconnected when load is off working state, keeps solid-state relay electric, to reduce the impact of lightning surge, improves the reliability of solid-state relay.
Description
Technical field
The utility model relates to family's electro-technical fields, and in particular to a kind of power supply circuit and sky based on solid-state relay
Adjust device.
Background technique
Solid-state relay (Solid State Relay, SSR), be it is a kind of be all made of solid state electrical components it is novel
Noncontacting switch device, it utilizes the switching characteristic of electronic component (such as switching transistor, bidirectional triode thyristor semiconductor devices),
With the can reach contactless no-spark purpose of make-and-break contact, therefore it is otherwise known as " noncontacting switch ".Solid-state relay
It is a kind of four end active devices, two of them terminal is input control end, and in addition both ends are output-controlled end.Its existing amplification is driven
Movement is used, and has buffer action, is well suited for driving high power switch formula executing agency, higher compared with electromagnetic relay reliability,
And it is contactless, the service life is long, speed is fast, also small to extraneous interference, be obtained extensive use.
Solid-state relay has obtained relatively broad application as the controllable switch of air conditioner inner fan power supply circuit, so
And in practical applications, the failure rate of the solid-state relay of the circuit based on solid-state relay control AC blower fan is higher always.
Therefore, the failure rate for reducing the solid-state relay of the circuit based on solid-state relay control AC blower fan becomes urgently
The technical issues of solution.
Utility model content
The technical problem to be solved by the present invention is to reduce the circuit based on solid-state relay control AC blower fan
The failure rate of solid-state relay.
According in a first aspect, the utility model embodiment provides a kind of power supply circuit based on solid-state relay, including：
Power supply module based on solid-state relay, for being connected with load；The input terminal of controllable switch module, controllable switch module is used for
It is connect with AC power source, the output end of controllable switch module is connect with power supply module, for breaking when load is off working state
Open the connection of AC power source and power supply module.
Optionally, the power supply module based on solid-state relay includes：Filter unit connects with the output end of controllable switch module
It connects；The input terminal of solid-state relay, solid-state relay is connect with filter unit, and the output end of solid-state relay and load connect；
Driving unit is connect, for driving the input terminal of solid-state relay to be connected with output end with the driving end of solid-state relay.
Optionally, filter unit includes：First resistor, first capacitor and inductance；One end of inductance and solid-state relay
Input terminal connection, the output end connection of the other end controllable switch module of inductance；One end of first capacitor and controllable switch module
Output end connection, one end of the other end of first capacitor and first resistor connects；The other end and solid-state relay of first resistor
The output end of device connects, and is connected to load.
Optionally, driving unit includes：Transistor and the second capacitor；The control terminal of transistor is used to receive driving signal,
The emitter of transistor is grounded, and the collector of transistor and the driving end of solid-state relay connect；One end of second capacitor connects
To transistor collector and solid-state relay driving end between, the other end of the second capacitor is grounded.
Optionally, controllable switch module is relay.
Optionally, the power supply circuit based on solid-state relay further includes：Overcurrent protector, setting are being based on solid-state relay
Power supply module and controllable switch module between.
According to second aspect, the utility model embodiment provides a kind of air conditioner inner fan control circuit, including：As above
State the power supply circuit based on solid-state relay of first aspect any one；Control circuit, the control terminal with controllable switch module
Connection, for disconnecting the connection of power supply circuit and AC power source by controllable switch module when air-conditioning is standby mode.
Optionally, controllable switch module is air conditioner external relay.
According to the third aspect, the utility model embodiment provides a kind of air conditioner, including：Air conditioner body；And such as
The air conditioner inner fan control circuit of above-mentioned second aspect description.
The utility model embodiment provides a kind of power supply circuit and air conditioner based on solid-state relay, based on solid-state after
The power supply module of electric appliance, for being connected with load；The input terminal of controllable switch module, controllable switch module is used for and AC power source
Connection, the output end of controllable switch module are connect with power supply module, for disconnecting AC power source when load is off working state
With the connection of power supply module.The connection of the input terminal and power supply of solid-state relay can be disconnected when load is off working state,
Keep solid-state relay electric, to reduce the impact of lightning surge, improves the reliability of solid-state relay.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 shows the modular schematic diagram of the power supply circuit based on solid-state relay of the utility model embodiment；
Fig. 2 shows the modular signals of the power supply circuit based on solid-state relay of another embodiment of the utility model
Figure；
Fig. 3 shows the signal of the circuit theory of the power supply circuit based on solid-state relay of the utility model embodiment
Figure；
Fig. 4 shows the modular schematic diagram of the air conditioner inner fan control circuit of the utility model embodiment.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can also be the connection inside two elements, can be wireless connection, be also possible to wired connection.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Due to the existing amplification driving effect of solid-state relay, and there is buffer action, is well suited for that high power switch formula is driven to hold
Row mechanism, it is higher compared with electromagnetic relay reliability and contactless, the service life is long, speed is fast, it is also small to extraneous interference, therefore
Solid-state relay has obtained relatively broad application as the controllable switch of air conditioner inner fan power supply circuit, however, in reality
In, the failure rate of the solid-state relay of the circuit based on solid-state relay control AC blower fan is higher always.Applicant is logical
It crosses and filter, such as lightning surge protector is added to the input terminal of solid-state relay, discovery failure rate is not substantially reduced,
Discovery is tested for a long time by applicant, since solid-state relay is semiconductor device switch device, and solid-state relay
Input terminal directly connect with firewire so that solid-state relay for a long time it is electric, cause number of shocks by lightning surge compared with
It is more, it is relatively easy to cause the damage of solid-state relay.
For this purpose, the utility model embodiment provides a kind of power supply circuit based on solid-state relay, as shown in Figure 1, should
Power supply circuit includes：Power supply module 10 based on solid-state relay, for being connected with load；Controllable switch module 20, is controllably opened
The input terminal of module 20 is closed for connecting with AC power source, the output end of controllable switch module 20 is connect with power supply module 10, is used
In when load is off working state, the connection of AC power source and power supply module 10 is disconnected.In the particular embodiment, power supply mould
Block 10 is power supply module 10 of the solid-state relay as switch, for load supplying.In the present embodiment, controllable switch mould
Block 20 can be contact relay, can be solid-state relay, in the present embodiment, using contact relay, in this reality
It applies in example, alleged AC power source can be the firewire of alternating current, and load is not necessarily to obtain electric, controllable switch module 20 in an inactive state
It disconnects, to disconnect the connection of AC power source Yu power supply module 10.Solid-state relay can be disconnected when load is off working state
The connection of the input terminal and power supply of device keeps solid-state relay electric, to reduce the impact of lightning surge, improves solid-state relay
The reliability of device.
In an alternate embodiment of the invention, as shown in figure 3, controllable switch module 20 may include relay K1 and controller, control
Device processed exports to relay K1 when load is off working state and disconnects control signal, relay K1 disconnects switch, to disconnect
The connection of the input terminal and power supply of solid-state relay keeps solid-state relay electric, to reduce the impact of lightning surge, improves
The reliability of solid-state relay.
In an alternate embodiment of the invention, as shown in Fig. 2, the power supply module 10 based on solid-state relay includes：Filter unit 11,
It is connect with the output end of controllable switch module 20；The input terminal of solid-state relay 12, solid-state relay is connect with filter unit 11,
The output end of solid-state relay 12 and load connect；Driving unit 13 is connect, for driving with the driving end of solid-state relay 12
The input terminal of solid-state relay is connected with output end.In the present embodiment, filter unit 11 can be lightning surge suppressor, can
Think the filtering devices such as low-pass filter.Driving unit 13 is connect with the driving end of solid-state relay 12, in access driving signal
Afterwards, driving solid-state relay 12 is connected, and control loads electric.
In an alternate embodiment of the invention, Fig. 3 illustratively shows the circuit diagram of filter unit 11, as shown in figure 3, filtering
Unit 11 includes：First resistor R1, first capacitor C1 and inductance L；One end of inductance L and the input terminal of solid-state relay 12 connect
It connects, the other end of inductance L is connect with the output end of controllable switch module 20；One end of first capacitor C1 and controllable switch module
20 output end connection, the other end of first capacitor C1 are connect with one end of first resistor R1；The other end of first resistor R1 with
The output end of solid-state relay 12 connects, and is connected to load.
Fig. 3 illustratively shows the circuit diagram of driving unit 13, as shown in figure 3, driving unit 13 includes：Transistor
Q1 and the second capacitor C2；The control terminal of transistor Q1 is for receiving driving signal, the emitter ground connection of transistor Q1, transistor Q1
Collector connect with the driving end of solid-state relay 12；One end of second capacitor C2 is connected to the collector of transistor Q1 and consolidates
Between the driving end of state relay 12, the other end of the second capacitor C2 is grounded.Specifically, in the control terminal access the of transistor Q1
Two resistance R2, series connection access 3rd resistor R3 and the 4th electricity between the collector of transistor Q1 and the driving end of solid-state relay
R4 is hindered, one end of the second capacitor C2 is connected between 3rd resistor R3 and the 4th resistance R4.
In an alternate embodiment of the invention, as shown in figure 3, the power supply circuit based on solid-state relay further includes：Overcurrent protector
FU1 is arranged between the power supply module 10 based on solid-state relay and controllable switch module 20.Specifically, overcurrent protector can
Think fuse, such as protective tube.
The utility model embodiment additionally provides a kind of air conditioner inner fan control circuit, as shown in figure 4, including：As above
State the power supply circuit 100 based on solid-state relay of any one of embodiment；Control circuit 200, with controllable switch module
Control terminal connection, for disconnecting the company of power supply circuit and AC power source by controllable switch module when air-conditioning is standby mode
It connects.
In the particular embodiment, controllable switch module can be air conditioner external relay, or be separately provided
Relay, in the present embodiment, air-conditioning internal machine can be divided into frequency conversion machine and determine machine in frequency, specifically, air-conditioning internal machine is change
In frequency when machine, in the standby state, outer machine relay is not attracted, and solid-state relay must not electricity；Under ventilation state, it can control
Outer machine relay is attracted, outer machine obtain it is electric, while control compressor must not electricity, solid-state relay obtains electric, blower operating.Other modes
Such as refrigeration, heating, dehumidifying isotype normal operation.
Air-conditioning internal machine is when determine machine in frequency, because fixed frequency air conditioner is without outer machine controller, therefore the corresponding relay of increase by after
Electric appliance individually controls solid-state relay and obtains electric situation.Principle is with machine in frequency conversion, and only under ideal case, solid-state relay must not electricity.
Solid-state relay can be in the standby state with air-conditioning must not be electric, effectively prevents lightning surge and directly beats in solid-state relay
Risk, improve the reliability of solid-state relay.
The utility model embodiment additionally provides a kind of air conditioner, including：Air conditioner body；And as above-described embodiment is retouched
The air conditioner inner fan control circuit stated.
Although being described in conjunction with the accompanying the embodiments of the present invention, those skilled in the art can not departed from
Various modifications and variations can be made in the case where the spirit and scope of the utility model, and such modifications and variations are each fallen within by appended
Within claim limited range.
Claims (9)
1. a kind of power supply circuit based on solid-state relay, which is characterized in that including：
Power supply module based on solid-state relay, for being connected with load；
Controllable switch module, the input terminal of the controllable switch module with AC power source for connecting, the controllable switch module
Output end connect with the power supply module, for it is described load be off working state when, disconnect the AC power source and institute
State the connection of power supply module.
2. as described in claim 1 based on the power supply circuit of solid-state relay, which is characterized in that described to be based on solid-state relay
Power supply module include：
Filter unit is connect with the output end of the controllable switch module；
Solid-state relay, the input terminal of the solid-state relay are connect with the filter unit, the output of the solid-state relay
End is connected with the load；
Driving unit is connect with the driving end of the solid-state relay, for drive the input terminal of the solid-state relay with it is defeated
Outlet conducting.
3. as claimed in claim 2 based on the power supply circuit of solid-state relay, which is characterized in that the filter unit includes：
First resistor, first capacitor and inductance；
One end of the inductance is connect with the input terminal of the solid-state relay, the other end of inductance and the controllable switch module
Output end connection；
One end of the first capacitor is connect with the output end of the controllable switch module, the other end of the first capacitor and institute
State one end connection of first resistor；
The other end of the first resistor is connect with the output end of the solid-state relay, and is connected to load.
4. as claimed in claim 2 based on the power supply circuit of solid-state relay, which is characterized in that the driving unit includes：
Transistor and the second capacitor；
The control terminal of the transistor is for receiving driving signal, the emitter ground connection of the transistor, the collection of the transistor
Electrode is connect with the driving end of the solid-state relay；
One end of second capacitor is connected between the collector of the transistor and the driving end of the solid-state relay, institute
State the other end ground connection of the second capacitor.
5. as described in claim 1 based on the power supply circuit of solid-state relay, which is characterized in that the controllable switch module is
Relay.
6. as described in claim 1 based on the power supply circuit of solid-state relay, which is characterized in that further include：
Overcurrent protector is arranged between the power supply module based on solid-state relay and the controllable switch module.
7. a kind of air conditioner inner fan control circuit, which is characterized in that including：
Power supply circuit based on solid-state relay as claimed in any one of claims 1 to 6；
Control circuit is connect with the control terminal of the controllable switch module, for passing through when the air conditioner is standby mode
The controllable switch module disconnects the connection of the power supply circuit and AC power source.
8. such as claim 7 air conditioner inner fan control circuit, which is characterized in that
The controllable switch module is air conditioner external relay.
9. a kind of air conditioner, which is characterized in that including：
Air conditioner body；
And
Air conditioner inner fan control circuit as claimed in claim 7 or 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820064705.3U CN208174269U (en) | 2018-01-12 | 2018-01-12 | Power supply circuit, air conditioner inner fan control circuit and air conditioner based on solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820064705.3U CN208174269U (en) | 2018-01-12 | 2018-01-12 | Power supply circuit, air conditioner inner fan control circuit and air conditioner based on solid-state relay |
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| Publication Number | Publication Date |
|---|---|
| CN208174269U true CN208174269U (en) | 2018-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820064705.3U Active CN208174269U (en) | 2018-01-12 | 2018-01-12 | Power supply circuit, air conditioner inner fan control circuit and air conditioner based on solid-state relay |
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| CN (1) | CN208174269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183479A (en) * | 2018-01-12 | 2018-06-19 | 珠海格力电器股份有限公司 | Power supply circuit and air conditioner based on solid-state relay |
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2018
- 2018-01-12 CN CN201820064705.3U patent/CN208174269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183479A (en) * | 2018-01-12 | 2018-06-19 | 珠海格力电器股份有限公司 | Power supply circuit and air conditioner based on solid-state relay |
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