CN220438802U - Temperature control circuit and control cabinet with same - Google Patents
Temperature control circuit and control cabinet with same Download PDFInfo
- Publication number
- CN220438802U CN220438802U CN202321588163.7U CN202321588163U CN220438802U CN 220438802 U CN220438802 U CN 220438802U CN 202321588163 U CN202321588163 U CN 202321588163U CN 220438802 U CN220438802 U CN 220438802U
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- control circuit
- switch
- circuit
- temperature
- heating
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- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 230000017525 heat dissipation Effects 0.000 claims description 28
- 230000007935 neutral effect Effects 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Abstract
The utility model relates to the field of control cabinets, in particular to a temperature control circuit and a control cabinet with the temperature control circuit, comprising: the live wire and the zero line are provided with a total circuit breaker, the output end of the total circuit breaker is connected with a heating circuit, a radiating circuit and a control circuit, the heating circuit and the radiating circuit are arranged between the live wire and the zero line, the control circuit comprises a first control circuit and a second control circuit, the first control circuit is arranged between the live wire and the zero line, the second control circuit is connected with the radiating circuit in parallel, the heating circuit is controlled by the first control circuit, and the radiating circuit is controlled by the second control circuit. According to the utility model, the heat radiating device and the heating device are automatically controlled by the control circuit, so that the control cabinet keeps constant temperature.
Description
Technical Field
The utility model relates to the field of control cabinets, in particular to a temperature control circuit and a control cabinet with the same.
Background
The control cabinet is a device which is used for assembling the switch equipment, the measuring instrument, the protection electrical appliance and the auxiliary equipment in the closed or semi-closed metal cabinet or on the screen according to the electrical wiring requirement, and the arrangement of the control cabinet meets the requirement of the normal operation of the power system, is convenient to overhaul and does not endanger the safety of personnel and surrounding equipment. For a control cabinet arranged outdoors, the temperature in the cabinet is easily affected by the environment, heat dissipation is not easy to realize in summer, the heat dissipation effect is poor, in addition, more components are arranged in the control cabinet, and meanwhile, some heat is generated; in winter, the temperature in the control cabinet can be too low, damage can be caused to the electronic elements in the control cabinet, and the running speed can be reduced, so that the service life of the electronic elements can be influenced. The existing control cabinet is mainly provided with an exhaust device for exhausting redundant heat in the cabinet, and a heating device is arranged for preserving heat of the control cabinet, but the heating device and the exhaust device cannot be automatically opened or closed along with the change of the ambient temperature in the prior art, so long as the control cabinet is powered on, the control cabinet works until the heating device and the exhaust device are damaged, and the service lives of the heating device and the exhaust device are greatly shortened.
Chinese patent No. CN218298859U discloses an electric box temperature control circuit comprising: the automatic start and stop of the exhaust fan are realized through the comparator and the NAND gate circuit, and the temperature in the electric box is prevented from being too high. However, when the air temperature is too low, the circuit cannot be heated to achieve heat preservation.
Disclosure of Invention
The utility model provides a temperature control circuit for overcoming the defects in the prior art, which comprises: the fire wire is provided with a total breaker, the output end of the total breaker is connected with a heating circuit, a heat dissipation circuit and a control circuit, the heating circuit and the heat dissipation circuit are arranged between the fire wire and the zero line, the control circuit comprises a first control circuit and a second control circuit, the first control circuit is arranged between the fire wire and the zero line, the second control circuit is connected with the heat dissipation circuit in parallel, the first control circuit controls the heating circuit, and when the temperature of the control cabinet is lower than a first temperature set value of the first control circuit, the first control circuit controls the heating circuit to start heating; when the temperature of the control cabinet reaches a second temperature set value of the first control circuit, the first control circuit controls the heating circuit to stop heating; the second control circuit controls the heat dissipation circuit, when the temperature of the control cabinet reaches a first temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to start working, and when the temperature of the control cabinet is lower than a second temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to stop working.
Further, the heating circuit comprises a heating wire. Wherein, a plurality of heating wires can be arranged in parallel.
Further, the first control circuit comprises a first-stage control circuit and a second-stage control circuit, the first-stage control circuit and the second-stage control circuit are respectively arranged between the live wire and the zero wire, the first-stage control circuit controls the second-stage control circuit, and the second-stage control circuit controls the heating circuit.
Further, the first-stage control circuit comprises a first intermediate relay and a first switch, the second-stage control circuit comprises a second switch, a third switch and an alternating current contactor, the first switch, the second switch and the third switch are mechanical temperature control switches, the first switch and the second switch are normally open switches, the third switch is normally closed switches, a first contact of the first intermediate relay is connected with the alternating current contactor in series, a first contact of the alternating current contactor is connected with the second switch in parallel, and a second contact of the alternating current contactor is connected with the heating wire in series. The first intermediate relay is electrified to generate a magnetic field, the armature of the first contact of the first intermediate relay is attracted, the first contact of the first intermediate relay is closed, the second control circuit is connected, the alternating current contactor is electrified to generate a magnetic field, the armature of the first contact and the armature of the second contact of the alternating current contactor are attracted, the first contact and the second contact of the alternating current contactor are closed, the second control circuit forms self-locking, the heating circuit is connected, and the heating wire starts to work.
Further, the setting values of the first switch, the second switch and the third switch are all adjustable. The shell of the mechanical temperature control switch is marked with a temperature scale which is randomly adjustable at 0-50 ℃, and the temperature is adjusted by using a common cross screwdriver head.
Further, the heat dissipation circuit comprises an exhaust fan, a fourth switch and a fifth switch, wherein the fourth switch and the fifth switch are mechanical temperature control switches, the fourth switch is a normally open switch, and the fifth switch is a normally closed switch.
Further, the second control circuit comprises a second intermediate relay, the second intermediate relay is connected with the exhaust fan in parallel, and a first contact of the second intermediate relay is connected with the fourth switch in parallel. When the fourth switch is closed, the heat dissipation circuit and the second intermediate relay are simultaneously connected, the second intermediate relay is electrified to generate a magnetic field, the armature iron of the first contact of the second intermediate relay is attracted, the first contact of the second intermediate relay is closed, and the heat dissipation circuit forms self-locking.
Further, the temperature set values of the fourth switch and the fifth switch are adjustable. The shell of the mechanical temperature control switch is marked with a temperature scale which is randomly adjustable at 0-50 ℃, and the temperature is adjusted by using a common cross screwdriver head.
The utility model also provides a control cabinet with the temperature control circuit.
In summary, the beneficial effects of the utility model are as follows:
1. compared with the prior art which can only automatically dissipate heat when the ambient temperature exceeds a set value, the utility model can also automatically heat when the ambient temperature is lower than the set value, so that the control cabinet can still be in a good running state in a low-temperature environment, and the service life of equipment in the control cabinet is prolonged.
2. The self-locking of the first control circuit is realized through the cooperation of the mechanical temperature control switch, the first intermediate relay and the alternating current contactor, so that the heating wire can still work when the temperature exceeds a first temperature set value of the first control circuit, the heating wire can not stop working until the temperature reaches a second temperature set value of the first control circuit, and the heating temperature is controlled in a reasonable interval; through the cooperation of mechanical temperature detect switch and second intermediate relay, realized radiating circuit's auto-lock, make the exhaust fan still can work when the temperature is less than the first temperature setting value of second control circuit, just stop work until the temperature reaches the second temperature setting value of second control circuit, can prevent effectively that the fan from frequently opening and close in critical temperature department, extension fan life.
The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
Drawings
Fig. 1 is a temperature control circuit diagram according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to specific examples for the purpose of facilitating understanding to those skilled in the art.
Referring to fig. 1, the gap compensation device disclosed by the utility model comprises: the fire wire L and the zero line N are provided with a total breaker QF, the output end of the total breaker QF is connected with a heating circuit, a heat dissipation circuit and a control circuit, the heating circuit and the heat dissipation circuit are arranged between the fire wire L and the zero line N, the control circuit comprises a first control circuit and a second control circuit, the first control circuit is arranged between the fire wire L and the zero line N, and the second control circuit is connected with the heat dissipation circuit in parallel; the first control circuit controls the heating circuit, and when the temperature of the control cabinet is lower than a first temperature set value of the first control circuit, the first control circuit controls the heating circuit to start heating; when the temperature of the control cabinet reaches a second temperature set value of the first control circuit, the first control circuit controls the heating circuit to stop heating; the second control circuit controls the heat dissipation circuit, when the temperature of the control cabinet reaches a first temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to start working, and when the temperature of the control cabinet is lower than a second temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to stop working.
In one implementation of this embodiment, the heating circuit includes a heating wire R.
In one implementation of this embodiment, a plurality of heating wires R may be disposed in parallel.
In one implementation manner of this embodiment, the first control circuit includes a first-stage control circuit and a second-stage control circuit, where the first-stage control circuit and the second-stage control circuit are respectively disposed between the live wire L and the neutral wire N, the first-stage control circuit controls the second-stage control circuit, and the second-stage control circuit controls the heating circuit.
In one implementation manner of this embodiment, the primary control circuit includes a first intermediate relay KA1 and a first switch RK1, the secondary control circuit includes a second switch RK2, a third switch RK3, and an ac contactor KM1, the first switch RK1, the second switch RK2, and the third switch RK3 are mechanical temperature control switches, the first switch RK1 and the second switch RK2 are normally open switches, the third switch RK3 is a normally closed switch, a first contact KA1-1 of the first intermediate relay KA1 is connected in series with the ac contactor KM1, a first contact KM1-1 of the ac contactor KM1 is connected in parallel with the second switch RK2, and a second contact KM1-2 of the ac contactor KM1 is connected in series with the heating wire R.
In one implementation of this embodiment, the temperature settings of the first switch RK1, the second switch RK2, and the third switch RK3 are all adjustable.
In one implementation manner of this embodiment, the heat dissipation circuit includes an exhaust fan M, a fourth switch RK4, and a fifth switch RK5, where the fourth switch RK4 and the fifth switch RK5 are mechanical temperature control switches, the fourth switch RK4 is a normally open switch, and the fifth switch RK5 is a normally closed switch.
In one implementation of this embodiment, the second control circuit includes a second intermediate relay KA2, where the second intermediate relay KA2 is connected in parallel with the exhaust fan, and the first contact KA2-1 of the second intermediate relay KA2 is connected in parallel with the fourth switch RK 4.
In one implementation of this embodiment, the temperature settings of both the fourth switch RK4 and the fifth switch RK5 are adjustable.
The utility model also provides an implementation mode, a control cabinet with the temperature control circuit.
Working principle:
referring to fig. 1, in the implementation process of the temperature control circuit provided by the present utility model, the set values of the mechanical temperature control switches are set first, and the set values of the embodiment are set as follows: the first switch RK1 and the second switch RK2 are set at 5 ℃, the third switch RK3 is set at 15 ℃, the fourth switch RK4 is set at 25 ℃, and the fifth switch RK5 is set at 20 ℃.
Referring to fig. 1, in the temperature control circuit provided by the utility model, when the circuit is in a non-working state, a first switch RK1 is opened, a second switch RK2 is opened, a third switch RK3 is closed, a fourth switch RK4 is opened, a fifth switch RK5 is closed, a first contact KA1-1 of a first intermediate relay KA1 is opened, a first contact KM1-1 of an alternating current contactor KM1 is opened with a second contact KM1-2, a first contact KA2-1 of a second intermediate relay KA2 is opened, and neither a heating wire nor an exhaust fan works.
When the temperature is lower than 5 ℃, the first switch RK1 is closed, the second switch RK2 is closed, the first intermediate relay KA1 is connected with a circuit, the first contact KA1-1 of the first intermediate relay KA1 is closed, the alternating current contactor KM1 is connected with the circuit, the first contact KM1-1 of the alternating current contactor KM1 is closed, the secondary control circuit forms self-locking, the second contact KM1-2 of the alternating current contactor KM1 is closed, and the heating wire R is connected with the circuit to start heating.
When the temperature is higher than 15 ℃ and lower than 25 ℃, the first switch RK1 is opened, the second switch RK2 is opened, the first contact KA1-1 of the first intermediate relay KA1 is opened, the first contact KM1-1 of the alternating current contactor KM1 is opened, the second contact KM1-2 of the alternating current contactor KM1 is opened, and the heating wire R stops working.
When the temperature is higher than 25 ℃, the fourth switch RK4 is closed, the heat dissipation circuit is switched on, the exhaust fan M starts to work, meanwhile, the third control circuit is closed, the second intermediate relay KA2 is switched on, the first contact KA2-1 of the second intermediate relay KA2 is closed, and the heat dissipation circuit is self-locking.
When the temperature drops to 20 ℃, the fifth switch RK5 is opened, the third control circuit and the heat dissipation circuit are opened, the first contact KA2-1 of the second intermediate relay KA2 is opened, and the exhaust fan M stops working.
When the first intermediate relay KA1 is electrified, a magnetic field is generated to attract an armature of a first contact KA1-1 on the first intermediate relay KA1, the first contact KA1-1 of the first intermediate relay KA1 is closed, when the first intermediate relay KA1 is powered off, the magnetic field disappears, the armature of the first contact KA1-1 on the first intermediate relay KA1 returns to the original position, and the first contact KA1-1 of the first intermediate relay KA1 is disconnected; energizing the second intermediate relay KA2 to generate a magnetic field, attracting the armature of the first contact KA2-1 on the second intermediate relay KA2, closing the first contact KA2-1 of the second intermediate relay KA2, and eliminating the magnetic field when the second intermediate relay KA2 is powered off, restoring the armature of the first contact KA2-1 on the second intermediate relay KA2 to the original position, and opening the first contact KA2-1 of the second intermediate relay KA 2; the alternating current contactor KM1 is electrified to generate a magnetic field, the magnetic field attracts armatures of a first contact KM1-1 and a second contact KM1-2 of the alternating current contactor KM1, the first contact KM1-1 and the second contact KM1-2 of the alternating current contactor KM1 are closed, the magnetic field disappears when the alternating current contactor KM1 is powered off, the armatures of the first contact KM1-1 and the second contact KM1-2 on the alternating current contactor KM1 are restored to the original position, and the first contact KM1-1 and the second contact KM1-2 of the alternating current contactor KM1 are disconnected.
The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.
Claims (9)
1. A temperature control circuit, comprising: the fire wire is provided with a total breaker, the output end of the total breaker is connected with a heating circuit, a heat dissipation circuit and a control circuit, the heating circuit and the heat dissipation circuit are arranged between the fire wire and the zero line, the control circuit comprises a first control circuit and a second control circuit, the first control circuit is arranged between the fire wire and the zero line, the second control circuit is connected with the heat dissipation circuit in parallel, the first control circuit controls the heating circuit, and when the ambient temperature is lower than a first temperature set value of the first control circuit, the first control circuit controls the heating circuit to start heating; when the ambient temperature reaches a second temperature set value of the first control circuit, the first control circuit controls the heating circuit to stop heating; the second control circuit controls the heat dissipation circuit, when the ambient temperature reaches a first temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to start working, and when the ambient temperature is lower than a second temperature set value of the second control circuit, the second control circuit controls the heat dissipation circuit to stop working.
2. A temperature control circuit according to claim 1, wherein the heating circuit comprises a heating wire.
3. A temperature control circuit according to claim 2, wherein the first control circuit comprises a primary control circuit and a secondary control circuit, the primary control circuit and the secondary control circuit being respectively arranged between the live wire and the neutral wire, the primary control circuit controlling the secondary control circuit, the secondary control circuit controlling the heating circuit.
4. A temperature control circuit according to claim 3, wherein the primary control circuit comprises a first intermediate relay and a first switch, the secondary control circuit comprises a second switch, a third switch and an ac contactor, the first switch, the second switch and the third switch are mechanical temperature control switches, the first switch and the second switch are normally open switches, the third switch is a normally closed switch, a first contact of the first intermediate relay is connected in series with the ac contactor, a first contact of the ac contactor is connected in parallel with the second switch, and a second contact of the ac contactor is connected in series with the heating wire.
5. The temperature control circuit of claim 4 wherein the temperature settings of the first switch, the second switch, and the third switch are all adjustable.
6. The temperature control circuit of claim 1, wherein the heat dissipation circuit comprises an exhaust fan, a fourth switch and a fifth switch, the fourth switch and the fifth switch are mechanical temperature control switches, the fourth switch is a normally open switch, and the fifth switch is a normally closed switch.
7. A temperature control circuit according to claim 6, wherein the second control circuit comprises a second intermediate relay connected in parallel with the exhaust fan, the first contact of the second intermediate relay being connected in parallel with the fourth switch.
8. A temperature control circuit as recited in claim 7 wherein the temperature settings of both the fourth and fifth switches are adjustable.
9. A control cabinet characterized by having a temperature control circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321588163.7U CN220438802U (en) | 2023-06-20 | 2023-06-20 | Temperature control circuit and control cabinet with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321588163.7U CN220438802U (en) | 2023-06-20 | 2023-06-20 | Temperature control circuit and control cabinet with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220438802U true CN220438802U (en) | 2024-02-02 |
Family
ID=89703028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321588163.7U Active CN220438802U (en) | 2023-06-20 | 2023-06-20 | Temperature control circuit and control cabinet with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220438802U (en) |
-
2023
- 2023-06-20 CN CN202321588163.7U patent/CN220438802U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |