CN205944818U

CN205944818U - Cooling JP cabinet

Info

Publication number: CN205944818U
Application number: CN201620900668.6U
Authority: CN
Inventors: 蔡怀乐
Original assignee: Combined Power Technology Co Ltd
Current assignee: Combined Power Technology Co Ltd
Priority date: 2016-08-18
Filing date: 2016-08-18
Publication date: 2017-02-08
Anticipated expiration: 2026-08-18

Abstract

The utility model discloses a cooling JP cabinet has solved the problem of high temperature in the JP cabinet, and its technical scheme main points are including the cabinet body, are equipped with the perforation on the lateral wall of the cabinet body, are connected with the compression pipe in the perforation, and the compression pipe is including head end and tail end, and the aperture of head end is less than the aperture of tail end, the head end is close to the inside of the cabinet body, when the air follow compression pipe entering cabinet in the external world is internal, the air is the tail end flow direction head end from the compression pipe, when the air passes through the tail end, the density of air is in a normal value, and the air gets into the cabinet when internal by tail end flow direction head end, because the tail end aperture of compression pipe will be greater than the aperture of head end, same volume flow rate air is by compress, make the clearance between the air diminish, it reduces to lead to getting into the internal air temperature of cabinet, thereby reach and reduce the internal temperature of cabinet.

Description

Cooling JP cabinet

Technical field

This utility model is related to electrical equipment, particularly to a kind of cooling JP cabinet.

Background technology

JP cabinet cabinet on market is made using common cold-rolled steel sheet or corrosion resistant plate, and its sealing is too strong, and is arranged on Equipment in JP cabinet can give out substantial amounts of heat during using, and particularly when summer, hot weather adds and sets The heat that the standby radiating of itself easilys lead in JP cabinet cannot shed and lead to internal unit to be burned, and on market Some JP cabinets that radiate, its heat dispersion is not too preferable.

At present, the Chinese patent of Application No. CN201320373749.1 discloses a kind of JP cabinet, and it includes cabinet, cabinet Front side, rear side be respectively equipped with button fly front, back pullout (BPO), be provided with instrument display window on front side of cabinet, the side of described both sides of cabinet Mounting seat is equipped with wall, the side wall of the both sides of cabinet is equipped with radiator window, the bottom of described cabinet is provided with some radiatings Hole.

Although this JP cabinet can make the air inside and outside cabinet mutually circulate, hot-air is made to discharge, when summer, outward The temperature on boundary is higher, the temperature that extraneous hot-air still can not effectively reduce in cabinet after entering JP cabinet.

Utility model content

In view of the shortcomings of the prior art, the purpose of this utility model is to provide a kind of reduction JP cabinet internal temperature Cooling JP cabinet.

Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of cooling JP cabinet, bag Include cabinet, the side wall of described cabinet is provided with perforation, described perforation is connected with compressed pipe, and described compressed pipe includes head end and tail End, the aperture of described head end is less than the aperture of tail end, and described head end is near the inside of cabinet.

By technique scheme, when extraneous air is when compressed pipe enters in cabinet, air is the tail from compressed pipe End flows to head end, and when air passes through tail end, the density of air is in a normal value, and air flows to head end by tail end and enters cabinet When internal, because the tail end aperture of compressed pipe is greater than the aperture of head end, same volume air is compressed, make air it Between gap diminish, lead to enter cabinet in air themperature reduce, thus reducing cabinet body temperature.

Preferably, the end face of described tail end extends baffle plate, described baffle plate surrounds the edge of compressed pipe tail end.

By technique scheme, when running into rainy weather, the baffle plate being located at compressed pipe tail end can play one to rainwater Fixed blocks effect, prevents rainwater from flowing in cabinet along the tube wall of compressed pipe.

Preferably, the side wall of described cabinet is additionally provided with exhaust fan, described exhaust fan is located at the top of compressed pipe.

By technique scheme, the air after compressed pipe cooling is transported in cabinet, so that the bottom temp in cabinet is dropped Principle that is low, being risen according to hot-air, is arranged on exhaust fan above compressed pipe while discharging hot-air, makes in cabinet Air pressure reduce, increase cabinet inside and outside draught head, make outside air by compressed pipe enter cabinet in speed accelerate, improve Cooling efficiency.

Preferably, it is additionally provided with described cabinet：

Temperature sensing circuit, for the temperature height in detecting box body with output temperature detection signal；

Control circuit, is coupled to temperature sensing circuit to receive temperature detection signal and in response to temperature detection signal to lead The current supply circuit of open air exhaust fan.

By technique scheme, the temperature height in temperature sensing circuit detecting box body the height output according to temperature Corresponding temperature detection signal, to control circuit, when the preset value that the temperature detecting is higher than temperature sensing circuit, controls electricity Road closes the current supply circuit of exhaust fan, so that exhaust fan is energized and runs；When the temperature detecting is less than preset value, control circuit is not The current supply circuit of closure exhaust fan, exhaust fan does not work, and can determine whether exhaust fan runs according to the temperature height in cabinet, When preventing cabinet body temperature high, exhaust fan runs and produces heat and so that cabinet body temperature is raised, and reduces kwh loss.

Preferably, it is provided with the isolation circuit for electrical isolation between described temperature sensing circuit and control circuit.

By technique scheme, when cabinet interior temperature spends high, exhaust fan long-play is easily burned, isolation electricity The current supply circuit of temperature sensing circuit and exhaust fan is separated by road, prevents exhaust fan from burning out and leads to temperature sensing circuit to be burnt Ruin.

Preferably, described control circuit is used for the conducting of delays time to control exhaust fan current supply circuit.

By technique scheme, when cabinet interior temperature spends height, control circuit opens exhaust fan to reduce cabinet body temperature, After temperature reduces, control circuit disconnects the current supply circuit of exhaust fan again after extending a period of time, prevent temperature to be just reduced to pre- If value is following, exhaust fan is just out of service, and temperature has just been increased to more than preset value, and exhaust fan starts again, reduces to exhaust fan electricity The damage of machine.

Preferably, described temperature sensing circuit includes first resistor, second resistance, critesistor, slide rheostat and One comparator, described critesistor is coupled to supply voltage, and the other end of described critesistor is coupled to first resistor, and described The other end ground connection of one resistance, the junction point of described critesistor and first resistor is coupled to the homophase input of first comparator End, the inverting input of described first comparator is coupled to second resistance, and the other end of described second resistance is coupled to power supply electricity Pressure, described slide rheostat is coupled to the junction point of first comparator and second resistance, another termination of described slide rheostat Ground, the outfan output temperature detection signal of described first comparator.

By technique scheme, sense the height of cabinet body temperature with critesistor, structure is simple, sensitivity is high, The bleeder circuit of second resistance and slide rheostat composition provides reference value to first comparator, and slide rheostat can adjust base The size of quasi- value, is easy to Various Seasonal, uses under different temperatures standard environment.

Preferably, described control circuit and isolation circuit include the first audion, photo-coupler, power-off delay relay and First normally opened contact, the base stage of described first audion is coupled to temperature sensing circuit, and the emitter stage of described first audion connects Ground, the colelctor electrode of the first audion is coupled to 2 feet of photo-coupler, and 1 foot of described photo-coupler is coupled to supply voltage, described 4 feet of photo-coupler are coupled to supply voltage, and 3 feet of described photo-coupler are coupled to power-off delay relay, and described power-off is prolonged When relay other end ground connection, described first normally opened contact is coupled to the current supply circuit of exhaust fan.

By technique scheme, the internal structure of photo-coupler is simple, and due to being using the turning circuit that lights, instead Answer speed fast, corresponding action, strong antijamming capability can be made in time according to the change of circuit.

Brief description

Fig. 1 is the front view of embodiment；

Fig. 2 is the right view of embodiment；

Fig. 3 is the compressed pipe working state figure of embodiment；

Fig. 4 is the temperature sensing circuit schematic diagram of embodiment；

Fig. 5 is control circuit and the exhaust fan current supply circuit schematic diagram of embodiment.

Reference：1st, cabinet；2nd, compressed pipe；3rd, head end；4th, tail end；5th, baffle plate；6th, exhaust fan；7th, temperature detection electricity Road；8th, control circuit；9th, isolation circuit；10th, bore a hole；R1, first resistor；R2, second resistance；R3, critesistor；RP1, slip Rheostat；N1, first comparator；V1, port；OC, photo-coupler；Q1, the first audion；KT1, power-off delay relay； KT1-1, the first normally-closed contact.

Specific embodiment

Below in conjunction with accompanying drawing, this utility model is described in further detail.

As depicted in figs. 1 and 2, a kind of cooling JP cabinet disclosed in the present embodiment, including cabinet 1, the relative both sides side of cabinet 1 It is provided with perforation 10, perforation 10 quantity of every side is eight and uniformly lines up two row, the company of fixation in each perforation 10 below wall It is connected to a compressed pipe 2, the shell of compressed pipe 2 is the frustum of a cone, and the two ends of compressed pipe 2 are respectively head end 3 and tail end 4, head end 3 Aperture is less than the aperture of tail end 4, and the head end 3 of compressed pipe 2 is connected in perforation 10, enables the air in cabinet 1 to pass through compressed pipe 2 With outside air conducting, the baffle plate 5 of ring shape extended on the end face of tail end 4, the central axis of baffle plate 5 and compressed pipe 2 Neutral axis overlaps, and the aperture of baffle plate 5 is identical with the pore size of compressed pipe 2 tail end 4.

As shown in figure 3, outside air enters in cabinet 1 from tail end 4 side of compressed pipe 2, air will be from compressed pipe 2 macropore When the tail end 4 in footpath passes through the head end 3 of small-bore, air can be compressed, and compression makes the gap between air constituent diminish, According to principle of expanding with heat and contracting with cold, the temperature that after gap reduces between air, it is carried also has declined, so that entering in cabinet 1 Air relatively the external world for be cold air, reduce the effect of temperature in cabinet 1.

As shown in Fig. 2 two exhaust fan 6 side by side, exhaust fan 6 are also equipped with the side wall that cabinet 1 is provided with compressed pipe 2 Hot-air in cabinet 1 can be discharged after energising, the air entering from compressed pipe 2 head end 3 makes cabinet 1 the latter half obtain first Cooling, because cold air declines, hot-air rises, and then makes the hot-air in cabinet 1 be gathered in top half, and exhaust fan 6 sets Put and can quickly hot-air be discharged on compressed pipe 2, so that the pressure in cabinet 1 is reduced, make the inside and outside formation pressure of cabinet 1 Difference, accelerates the speed that outside air passes through compressed pipe 2.

As shown in Figure 4 and Figure 5, it is provided with temperature sensing circuit 7 and control circuit 8 in cabinet 1, temperature sensing circuit 7 detects The height of the temperature value in cabinet 1 according to testing result output temperature detection signal, control circuit 8 receives temperature detection signal And control the keying of exhaust fan 6 current supply circuit.

As shown in figure 4, temperature sensing circuit 7 includes first resistor R1, second resistance R2, critesistor R3, slip variable resistance Device RP1 and first comparator N1, wherein critesistor R3 are placed on the top in cabinet 1, and the resistance of critesistor R3 with The rising of temperature and reduce.

As shown in figure 4, critesistor R3 is coupled to power source voltage Vcc, the other end of critesistor R3 is coupled to the first electricity Resistance R1, the other end ground connection GND of first resistor R1, the junction point of critesistor R3 and first resistor R1 is coupled to first comparator The in-phase input end of N1, the inverting input of first comparator N1 is coupled to second resistance R2, the other end coupling of second resistance R2 It is connected to power source voltage Vcc, slide rheostat RP1 is coupled to the junction point of first comparator N1 and second resistance R2, slip variable resistance The other end ground connection GND of device RP1, the outfan output temperature detection signal of first comparator N1 to port V1.

As shown in figure 5, control circuit 8 includes the first audion Q1, photo-coupler OC, power-off delay relay KT1 and One normally opened contact KT1-1, wherein, the first audion Q1 is NPN type triode.

As shown in figure 5, the base stage of the first audion Q1 is coupled to temperature sensing circuit 7, the emitter stage of the first audion Q1 The colelctor electrode of ground connection GND, the first audion Q1 is coupled to 2 feet of photo-coupler OC, and 1 foot of photo-coupler OC is coupled to power supply electricity Pressure Vcc, 4 feet of photo-coupler OC are coupled to power source voltage Vcc, and 3 feet of photo-coupler OC are coupled to power-off delay relay The other end ground connection GND of KT1, power-off delay relay KT1, the first normally opened contact KT1-1 are coupled to exhaust fan 6, exhaust fan 6 The other end is coupled to alternating current power supply AC, and the other end of the first normally opened contact KT1-1 is coupled to alternating current power supply AC.

Work process：When cabinet 1 is closed, extraneous air enters in cabinet 1 from the tail end 4 of compressed pipe 2 by head end 3, Compressed pipe 2 is compressed lowering the temperature to the air entering in cabinet 1, and the cold air entering in cabinet 1 overstocks in bottom, makes cabinet 1 Interior hot-air rises to top.

When the temperature positioned at cabinet 1 internal upper part raises and reaches preset value, the resistance of critesistor R3 diminishes, and first compares Device N1 exports the signal of telecommunication of high level, makes the first audion Q1 conducting, then makes photo-coupler OC energising conducting, and power cut off delay continues Electrical equipment KT1 energising runs, and the first normally opened contact KT1-1 closure makes exhaust fan 6 energising run, and exhaust fan 6 will be empty for the heat in cabinet 1 Gas discharges；When the temperature in cabinet 1 is reduced below preset value, the resistance of critesistor R3 becomes big, first comparator N1 Export the low level signal of telecommunication, so that the first audion Q1 is not turned on, then make photo-coupler OC power-off, power-off delay relay After KT1 power-off, closure first normally opened contact KT1-1 extend a period of time after disconnect, and then make exhaust fan 6 in cabinet 1 on The temperature in portion also works just out of service for a period of time after being reduced to preset value.

This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model Field technique personnel can make to the present embodiment after reading this specification as needed does not have the modification of creative contribution, but As long as all being protected by Patent Law in right of the present utility model.

Claims

1. a kind of cooling JP cabinet, including cabinet (1), is characterized in that：The side wall of described cabinet (1) is provided with perforation (10), described Compressed pipe (2) is connected with perforation (10), described compressed pipe (2) includes head end (3) and tail end (4), the aperture of described head end (3) Less than the aperture of tail end (4), described head end (3) is near the inside of cabinet (1).

2. cooling JP cabinet according to claim 1, is characterized in that：Extend baffle plate (5) on the end face of described tail end (4), Described baffle plate (5) surrounds the edge of compressed pipe (2) tail end (4).

3. cooling JP cabinet according to claim 1, is characterized in that：It is additionally provided with exhaust fan on the side wall of described cabinet (1) (6), described exhaust fan (6) is located at the top of compressed pipe (2).

4. cooling JP cabinet according to claim 3, is characterized in that, is additionally provided with described cabinet (1)：

Temperature sensing circuit (7), for detecting the temperature height in cabinet (1) with output temperature detection signal；

Control circuit (8), be coupled to temperature sensing circuit (7) with receive temperature detection signal and in response to temperature detection signal with The current supply circuit of conducting/cut-out exhaust fan (6).

5. cooling JP cabinet according to claim 4, is characterized in that：Described temperature sensing circuit (7) and control circuit (8) it Between be provided with isolation circuit (9) for electrical isolation.

6. cooling JP cabinet according to claim 5, is characterized in that：Described control circuit (8) is used for delays time to control exhaust fan (6) conducting of current supply circuit.

7. cooling JP cabinet according to claim 4, is characterized in that：Described temperature sensing circuit (7) includes first resistor (R1), second resistance (R2), critesistor (R3), slide rheostat (RP1) and first comparator (N1), described critesistor (R3) it is coupled to supply voltage (Vcc), the other end of described critesistor (R3) is coupled to first resistor (R1), described first electricity Other end ground connection (GND) of resistance (R1), the junction point of described critesistor (R3) and first resistor (R1) is coupled to first and compares The in-phase input end of device (N1), the inverting input of described first comparator (N1) is coupled to second resistance (R2), and described second The other end of resistance (R2) is coupled to supply voltage (Vcc), described slide rheostat (RP1) be coupled to first comparator (N1) and The junction point of second resistance (R2), other end ground connection (GND) of described slide rheostat (RP1), described first comparator (N1) Outfan output temperature detection signal.

8. cooling JP cabinet according to claim 4, is characterized in that：Described control circuit (8) and isolation circuit (9) include the One audion (Q1), photo-coupler (OC), power-off delay relay (KT1) and the first normally opened contact (KT1-1), the described 1st The base stage of pole pipe (Q1) is coupled to temperature sensing circuit (7), the grounded emitter (GND) of described first audion (Q1), and first The colelctor electrode of audion (Q1) is coupled to 2 feet of photo-coupler (OC), and 1 foot of described photo-coupler (OC) is coupled to supply voltage (Vcc), 4 feet of described photo-coupler (OC) are coupled to supply voltage (Vcc), and 3 feet of described photo-coupler (OC) are coupled to disconnected Electric time-delay relay (KT1), other end ground connection (GND) of described power-off delay relay (KT1), described first normally opened contact (KT1-1) it is coupled to the current supply circuit of exhaust fan (6).