CN212362368U

CN212362368U - Precision air conditioner

Info

Publication number: CN212362368U
Application number: CN201922501740.4U
Authority: CN
Inventors: 胡国文
Original assignee: Guangzhou Youda Electronic Technology Co ltd
Current assignee: Guangzhou Youda Electronic Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-01-15
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an accurate air conditioner, which comprises an accurate air conditioner body, an energy-saving controller, a frequency converter, a touch screen, an intelligent electric meter and a power module, wherein the energy-saving controller is respectively connected with the accurate air conditioner body, the frequency converter, the touch screen, the intelligent electric meter and the power module; the power supply module comprises a voltage input end, a switch, a first resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a piezoresistor, a second resistor, a fifth voltage-regulator tube, a seventh diode, a first triode, a third resistor and a sixth diode, wherein one end of the voltage input end is connected with the cathode of the first diode and the anode of the second diode respectively through the switch and the first resistor in sequence, and the other end of the voltage input end is connected with the cathode of the third diode and the anode of the fourth diode respectively. Implement the utility model discloses an accurate air conditioner has following beneficial effect: the circuit structure is simpler, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Description

Precision air conditioner

Technical Field

The utility model relates to an air conditioner field, in particular to precision air conditioner.

Background

The precision air conditioner is a special precision air conditioner for a machine room, which can fully meet the requirements of environmental conditions of the machine room, is a new machine type which is gradually developed in the last 30 years, has the characteristics of large air volume and heat load change, and is applied to libraries, archives, banknote printing factories and the like. Typically, 30% of the comfort air conditioning cooling load is to eliminate latent heat load and 70% is to eliminate sensible heat load. The situation of the machine room is quite different, the machine room mainly comprises heat emitted by equipment, and heat load emitted by indoor workers and heat and humidity load of fresh air entering a room in summer only account for 5% of the total load. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional precision air conditioner, and it can be seen from fig. 1 that the power supply portion of the conventional precision air conditioner has many components, a complex circuit structure, high hardware cost and inconvenient maintenance. In addition, since the power supply part of the conventional precision air conditioner lacks a corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit structure comparatively simple, the cost is lower, the security and the higher accurate air conditioner of reliability of convenient maintenance, circuit.

The utility model provides a technical scheme that its technical problem adopted is: the precise air conditioner comprises a precise air conditioner body, an energy-saving controller, a frequency converter, a touch screen, an intelligent electric meter and a power module, wherein the energy-saving controller is respectively connected with the precise air conditioner body, the frequency converter, the touch screen, the intelligent electric meter and the power module;

the power module comprises a voltage input end, a switch, a first resistor, a first diode, a second diode, a third diode, a fourth diode, a first capacitor, a piezoresistor, a second resistor, a fifth voltage-regulator tube, a seventh diode, a first triode, a third resistor and a sixth diode, wherein one end of the voltage input end is respectively connected with the cathode of the first diode and the anode of the second diode sequentially through the switch and the first resistor, the other end of the voltage input end is respectively connected with the cathode of the third diode and the anode of the fourth diode, the anode of the first diode is connected with the anode of the third diode, the cathode of the second diode is respectively connected with the cathode of the fourth diode, one end of the first capacitor, one end of the piezoresistor, one end of the second resistor and the cathode of the sixth diode, the other end of the second resistor is connected with the cathode of the fifth voltage-regulator tube and the anode of the seventh diode respectively, the cathode of the seventh diode is connected with the base electrode of the first triode, the emitting electrode of the first triode is connected with one end of the third resistor, the anode of the first diode is also connected with the other end of the first capacitor, the other end of the voltage-sensitive resistor, the anode of the fifth voltage-regulator tube and the other end of the third resistor respectively, and the collector of the first triode is connected with the anode of the sixth diode.

In the precision air conditioner of the present invention, the seventh diode has a model of E-202.

In the precision air conditioner of the present invention, the power module further includes a fourth resistor, one end of the fourth resistor is connected to one end of the second resistor, and the other end of the fourth resistor is connected to the cathode of the sixth diode.

In the precision air conditioner of the present invention, the resistance of the fourth resistor is 25k Ω.

In the precise air conditioner of the present invention, the first transistor is an NPN transistor.

In the precision air conditioner of the present invention, the first diode may be a diode, the second diode may be a diode, and the third diode may be a diode having a size of 1N 4007.

Implement the utility model discloses an accurate air conditioner has following beneficial effect: the intelligent electric meter is provided with a precision air conditioner body, an energy-saving controller, a frequency converter, a touch screen, an intelligent electric meter and a power supply module; the power module includes voltage input end, switch, first resistance, first diode, the second diode, the third diode, the fourth diode, first electric capacity, piezo-resistor, the second resistance, the fifth stabilivolt, the seventh diode, first triode, third resistance and sixth diode, this power module compares with the power supply part of traditional accurate air conditioner, the components and parts that it used are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, the seventh diode is used for carrying out current-limiting protection, consequently the utility model discloses circuit structure is comparatively simple, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic circuit diagram of a power supply part of a conventional precision air conditioner;

fig. 2 is a schematic structural view of an embodiment of the precision air conditioner of the present invention;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the embodiment of the present invention, the schematic structural diagram of the precision air conditioner is shown in fig. 2. In fig. 2, the precision air conditioner comprises a precision air conditioner body 1, an energy-saving controller 2, a frequency converter 3, a touch screen 4, an intelligent electric meter 5 and a power module 6, wherein the energy-saving controller 2 is respectively connected with the precision air conditioner body 1, the frequency converter 3, the touch screen 4, the intelligent electric meter 5 and the power module 6. The touch screen 4 is used for controlling the energy-saving controller 2, and the energy-saving controller 2 controls the precision air conditioner body 1 through the frequency converter 3. The fan motor which runs at a fixed frequency for a long time is subjected to variable frequency running by detecting indoor temperature load, so that the energy consumption is reduced. When the frequency converter 3 has a fault, the control logic design ensures that the unit can automatically return to the original mode for operation.

In this embodiment, the precise air conditioner body 1, the energy-saving controller 2, the frequency converter 3, the touch screen 4 and the smart electric meter 5 are all realized by adopting a structure in the prior art, and the working principle thereof is also the working principle in the prior art, which is not described here.

Fig. 3 is a schematic circuit diagram of a power module in this embodiment, in fig. 3, the power module 6 includes a voltage input terminal Vin, a switch K, a first resistor R1, a first diode D1, a second diode D2, a third diode D3, a fourth diode D4, a first capacitor C1, a voltage dependent resistor RV, a second resistor R2, a fifth voltage regulator D5, a seventh diode D7, a first triode Q1, a third resistor R3, and a sixth diode D6, one end of the voltage input terminal Vin is connected to a cathode of the first diode D1 and an anode of the second diode D2 respectively through the switch K and the first resistor R1 in sequence, the other end of the voltage input terminal Vin is connected to a cathode of the third diode D3 and an anode of the fourth diode D4 respectively, an anode of the first diode D1 is connected to an anode of the third diode D3, and a cathode of the second diode D2 is connected to a cathode of the fourth diode D4 and a cathode of the first capacitor C1, One end of a piezoresistor RV, one end of a second resistor R2 and the cathode of a sixth diode D6 are connected, the other end of the second resistor R2 is respectively connected with the cathode of a fifth voltage-regulator tube D5 and the anode of a seventh diode D7, the cathode of the seventh diode D7 is connected with the base of a first triode Q1, the emitter of the first triode Q1 is connected with one end of a third resistor R3, the anode of a first diode D1 is also respectively connected with the other end of a first capacitor C1, the other end of the piezoresistor RV, the anode of the fifth voltage-regulator tube D5 and the other end of the third resistor R3, and the collector of the first triode Q1 is connected with the anode of the sixth diode D6.

The first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 form a rectifier bridge, and the models of the first diode D1, the second diode D2, the third diode D3 and the fourth diode D4 are all 1N 4007.

Compared with the power supply part of the traditional precise air conditioner in the figure 1, the power supply module 6 has the advantages of fewer used components, simpler circuit structure and convenient maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the seventh diode D7 is a current limiting diode for current limiting protection of the base current of the first transistor Q1. The current limiting protection principle is as follows: when the base current of the first triode Q1 is large, the seventh diode D7 can reduce the base current of the first triode Q1 to keep the base current in a normal working state, and the device in the circuit is not burnt out due to too large current, so that the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the model of the seventh diode D7 is E-202. Of course, in practical applications, the seventh diode D7 may also be another type of diode with the same function.

The working principle of the power module 6 is as follows: the first capacitor C1 functions as a filter for filtering the rectified pulsating dc voltage into a smooth dc voltage. The voltage dependent resistor RV is used for discharging the instantaneous pulse high voltage in the input power supply to the ground, so that the load is protected from being broken down by the instantaneous high voltage.

In this embodiment, the first transistor Q1 is an NPN transistor. Of course, in practical application, the first transistor Q1 may also be a PNP transistor, but the structure of the circuit is changed accordingly.

In this embodiment, the power module 6 further includes a fourth resistor R4, one end of the fourth resistor R4 is connected to one end of the second resistor R2, and the other end of the fourth resistor R4 is connected to the cathode of the sixth diode D6. The fourth resistor R4 is a current limiting resistor for current limiting protection. The current limiting protection principle is as follows: when the current of the branch where the fourth resistor R4 is located is large, the current of the branch where the fourth resistor R4 is located can be reduced by the fourth resistor R4, so that the branch can be kept in a normal operating state, and the components in the circuit cannot be burned out due to the large current, so that good safety and reliability are further enhanced. It should be noted that, in the present embodiment, the resistance of the fourth resistor R4 is 25k Ω. Of course, in practical applications, the resistance of the fourth resistor R4 may be increased or decreased according to specific situations.

In a word, in this embodiment, compared with the power supply part of the conventional precision air conditioner, the power module 6 has fewer used components, a simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the power module 6 is provided with a current-limiting diode, so that the safety and the reliability of the circuit are high.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision air conditioner is characterized by comprising a precision air conditioner body, an energy-saving controller, a frequency converter, a touch screen, an intelligent ammeter and a power module, wherein the energy-saving controller is respectively connected with the precision air conditioner body, the frequency converter, the touch screen, the intelligent ammeter and the power module;

2. The precision air conditioner of claim 1, wherein the seventh diode is of type E-202.

3. The precision air conditioner of claim 1, wherein the power module further comprises a fourth resistor, one end of the fourth resistor is connected to one end of the second resistor, and the other end of the fourth resistor is connected to the cathode of the sixth diode.

4. A precision air conditioner according to claim 3, wherein the fourth resistor has a resistance of 25k Ω.

5. The precision air conditioner according to any one of claims 1 to 4, wherein the first triode is an NPN type triode.

6. The precision air conditioner according to any one of claims 1 to 4, wherein the first diode, the second diode, the third diode and the fourth diode are all 1N4007 in type.