Industrial air conditioner with single-phase AC fan speed regulation function

Abstract

The utility model belongs to the technical field of industrial air conditioners, and discloses an industrial air conditioner with a single-phase AC fan speed regulation function, a single-phase AC fan is installed inside a shell of the industrial air conditioner, the single-phase AC fan is connected with a speed regulation circuit, the speed regulation circuit comprises a starting capacitor, a speed regulation capacitor, a relay and a controller, one end of the starting capacitor is connected with the single-phase AC fan, and the other end of the starting capacitor is connected with the speed regulation capacitor. The speed regulation capacitor is connected in series to a main loop of the single-phase AC fan, and the relay is connected in parallel with the speed regulation capacitor. According to the speed regulation circuit, after the speed regulation capacitor is connected in series to the main loop of the single-phase AC fan, the voltage at the two ends of the single-phase AC fan is reduced and the rotating speed of the fan is reduced by dividing the voltage through the speed regulation capacitor, so that the rotating speed of the AC single-phase fan is regulated, and the existing problems that the speed of the single-phase fan cannot be regulated and the air volume of the fan cannot be controlled by a single-phase industrial air conditioner are solved; and for the energy storage battery bin, the temperature in the bin is accurately controlled, frequent start and stop of the AC fan are avoided, and the service life of the AC fan is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial air conditioners, and in particular relates to an industrial air conditioner with a single-phase AC fan speed regulation function. Background Art

[0002] When the ambient temperature is low, the single-phase electric industrial air conditioner for energy storage will frequently start and stop the external fan to control the ambient temperature in the battery compartment. Frequent start and stop of the fan will seriously shorten the service life of the fan. In order to avoid frequent start and stop of the fan, the fan needs to have the function of adjusting the speed and changing the air volume. Single-phase AC fans cannot meet the speed regulation function due to their manufacturing principle, but many energy storage power stations can only provide single-phase AC power to industrial air conditioners. This contradiction has existed in the energy storage system for a long time. The problems and defects of the existing technology are: the single-phase fan in the industrial air conditioner cannot be adjusted in speed, and the single-phase industrial air conditioner method cannot control the fan air volume.

[0003] In view of the above problems, the utility model provides an industrial air conditioner with a single-phase AC fan speed regulation function, which solves the problem that the AC fan used in the industrial air conditioner cannot be speed regulated. Utility Model Content

[0004] In order to overcome the problems existing in the related art, the utility model provides an industrial air conditioner with a single-phase AC fan speed regulation function.

[0005] The technical solution of the utility model is as follows: an industrial air conditioner with a single-phase AC fan speed regulation function is provided with a single-phase AC fan, the single-phase AC fan is installed inside the housing of the industrial air conditioner, a motor M1 is installed inside the single-phase AC fan, and a speed regulation circuit is connected to the motor M1;

[0006] The speed regulation circuit comprises:

[0007] The speed regulation circuit comprises: a starting capacitor C1, a speed regulation capacitor C2, a relay KA4 and a controller;

[0008] The starting capacitor C1 is installed in series on the starting winding, one end of which is connected to the starting winding, and the other end is connected to the common node of the relay KA4 and the speed regulating capacitor C2 through a line; the relay KA4 and the speed regulating capacitor C2 are connected to the power supply circuit through the common node after being connected in parallel; the controller is connected in parallel to the coil of the relay KA4;

[0009] When the motor M1 is started, the current in the winding is made to have a close phase difference through the starting capacitor C1, thereby generating a rotating magnetic field in the motor M1;

[0010] By changing the capacitance of the speed regulating capacitor C2, the current and voltage in the circuit of the motor M1 are changed, thereby adjusting the speed of the motor M1;

[0011] In the power-on state, the power supply circuit is connected through the relay KA4, and in the power-off state, the power supply circuit is disconnected, which is used for starting and stopping control of the motor M1, and further controlling the start and stop of the single-phase AC fan (1);

[0012] The controller is connected to a wireless signal transmitter via a line, receives signals from the wireless signal transmitter, and is used to regulate the power-on and power-off conditions of the relay KA4.

[0013] In one embodiment, a voltage-stabilizing resistor R1 for limiting the current is connected in series to the speed regulating capacitor C2.

[0014] In one embodiment, the housing of the single-phase AC blower is connected to the ground wire through a connecting line, so as to direct the leakage current into the ground through the grounding line during leakage, thereby avoiding electric shock accidents.

[0015] In one embodiment, a ventilation hole is opened on the surface of the shell, and the ventilation hole corresponds to the position of the single-phase AC fan.

[0016] In one embodiment, a protective net is installed on the outer side of the air vent, and a dust filter is fixed on the inner side of the protective net.

[0017] Combining all the above technical solutions, the beneficial effects of the utility model are as follows: after the speed regulating circuit in the utility model is connected in series with the speed regulating capacitor C2 and the voltage stabilizing resistor R1 in the main circuit of the single-phase AC fan,

[0018] By changing the capacitance of the speed regulating capacitor C2, the voltage at both ends of the single-phase AC fan can be changed under the condition that the voltage stabilizing resistor R1 is constant. When the voltage at both ends of the single-phase AC fan changes, the operating current of the motor M1 will be changed, and different rotating magnetic fields will be formed to achieve different speeds of the stator of the motor M1, thereby achieving the rotation speed of the single-phase AC fan. According to the actual scene requirements, the capacitance of the speed regulating capacitor C2 can be adjusted to meet whether the rotation speed of the single-phase AC fan is suitable for the wind volume on site. By using the speed regulating capacitor voltage division, the voltage at both ends of the single-phase AC fan is reduced, and the fan speed is reduced, thereby adjusting the speed of the AC single-phase fan, solving the existing problems that the single-phase fan cannot adjust the speed and the single-phase industrial air conditioner cannot control the fan air volume. For the energy storage battery compartment, the temperature in the cabin can be accurately controlled to avoid frequent start and stop of the AC fan, which is of great significance for increasing the service life of the AC fan.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 It is a structural schematic diagram of an industrial air conditioner with a single-phase AC fan speed regulation function provided by an embodiment of the utility model;

[0022] Figure 2 It is a circuit diagram of a speed regulating circuit provided by an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a protective net provided by an embodiment of the utility model;

[0024] In the figure: 1. Single-phase AC fan; 2. Shell; 3. Air vents; 4. Protective net; 5. Dust filter. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0026] like Figure 1 and Figure 3 As shown, the single-phase AC fan 1 in the industrial air conditioner with a single-phase AC fan speed regulation function provided by the embodiment of the utility model is installed inside the housing 2, and the single-phase AC fan 1 is connected to a speed regulation circuit; the speed regulation circuit includes:

[0027] The speed regulation circuit comprises: a starting capacitor C1, a speed regulation capacitor C2, a relay KA4 and a controller;

[0028] The starting capacitor C1 is installed in series on the starting winding, one end of which is connected to the starting winding, and the other end is connected to the common node of the relay KA4 and the speed regulating capacitor C2 through a line; the relay KA4 and the speed regulating capacitor C2 are connected to the power supply circuit through the common node after being connected in parallel; the controller is connected in parallel to the coil of the relay KA4;

[0029] When the motor M1 is started, the current in the winding is made to have a close phase difference through the starting capacitor C1, thereby generating a rotating magnetic field in the motor M1;

[0030] By changing the capacitance of the speed regulating capacitor C2, the current and voltage in the circuit of the motor M1 are changed, thereby adjusting the speed of the motor M1;

[0031] In the power-on state, the power supply circuit is connected through the relay KA4, and in the power-off state, the power supply circuit is disconnected, which is used for the start and stop control of the motor M1, and further controls the start and stop of the single-phase AC fan 1;

[0032] The controller is connected to a wireless signal transmitter via a line, receives signals from the wireless signal transmitter, and is used to regulate the power-on and power-off conditions of the relay KA4.

[0033] The speed regulating capacitor C2 is connected in series with a voltage stabilizing resistor R1 for limiting the current.

[0034] Preferably, a vent hole 3 is provided on the surface of the housing 2 in the embodiment of the utility model, and the vent hole 3 corresponds to the position of the single-phase AC fan 1 .

[0035] Preferably, a protective net 4 is installed on the outer side of the air vent 3 in the embodiment of the utility model, and a dust filter 5 is fixed on the inner side of the protective net 4.

[0036] like Figure 2 As shown, the speed regulation circuit in the embodiment of the utility model includes a starting capacitor C1, a speed regulation capacitor C2, a relay KA4 and a controller. One end of the starting capacitor C1 is connected to the single-phase AC fan 1 and is installed in series on the starting winding. When the motor M1 is started, the current in the winding produces a close phase difference, thereby generating a rotating magnetic field in the motor M1; the speed regulation capacitor C2 is connected in series to the power supply circuit of the single-phase AC fan 1, the relay KA4 is connected in parallel with the speed regulation capacitor C2, and the controller is connected to the relay KA4 through a connecting line.

[0037] Preferably, the speed regulator C2 in the embodiment of the utility model is connected in series with a voltage-stabilizing resistor R1.

[0038] Preferably, the single-phase AC fan 1 in the embodiment of the utility model is connected to the ground wire through a connecting line.

[0039] Preferably, the controller in the embodiment of the utility model is connected to a wireless signal transmitter via a connecting line.

[0040] The working principle of the utility model is as follows: when the utility model is in use, the wireless signal transmitter connected to the controller is used to receive control instructions. When the air conditioner receives the "silent mode 1" instruction through communication, the relay KA4 is disconnected, and the controller is connected to the wireless signal transmitter through the line, and receives the signal of the wireless signal transmitter, which is used to regulate the power-on and power-off conditions of the relay KA4; when the coil of the relay KA4 is passed with current, the coil will generate a magnetic field, and the magnetic field can attract the armature, thereby driving the action of the moving contact and the static contact (normally open or normally closed contact), and realizing the conduction or disconnection of the circuit. When the coil is powered off, the electromagnetic force disappears, and the armature will return to its original position under the action of the spring, so that the moving contact and the static contact are disconnected or closed again, thereby restoring the initial state of the circuit.

[0041] The speed regulating capacitor C2 is connected in series to the main circuit of the single-phase AC fan 1, the voltage across the single-phase AC fan 1 is reduced, and the speed of the single-phase AC fan 1 is reduced; the industrial air conditioner with the single-phase AC fan speed regulating function is provided with a single-phase AC fan, the single-phase AC fan is installed inside the shell of the industrial air conditioner, the single-phase AC fan is installed inside the single-phase AC fan with a motor M1, the motor M1 is connected with the speed regulating capacitor C2; the speed regulating capacitor C2 changes the capacitance of the speed regulating capacitor C2, that is, changes the charge storage capacity of the speed regulating capacitor C2, thereby changing the current and voltage of the motor M1, and then adjusting the speed; when the capacitance of the speed regulating capacitor C2 is small, the rate of change of the charge is relatively fast, and the speed of the motor M1 is fast; when the capacitance of the speed regulating capacitor C2 is large, the rate of change of the charge is relatively slow, and the speed of the motor M1 is slow. By changing the capacitance of the speed regulating capacitor C2, the rotation of the motor M1 can be flexibly adjusted, thereby achieving the purpose of speed regulation.

[0042] The speed regulating capacitor C2 is connected in series with a voltage-stabilizing resistor R1 for limiting the current. The voltage-stabilizing resistor R1 can limit the current flowing through the speed regulating capacitor C2 and protect the speed regulating capacitor C2 from damage. When the air conditioner receives the "silent mode 2" command through communication, the relay KA4 closes, short-circuiting the speed regulating capacitor C2, and the voltage across the single-phase AC fan 1 is restored to the air conditioner input voltage, and the speed becomes the rated speed.

[0043] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements should be included in the protection scope of the utility model.

Claims

1. An industrial air conditioner with a single-phase AC fan speed regulation function, wherein the single-phase AC fan (1) is installed inside a housing (2) of the industrial air conditioner, and wherein: The single-phase AC fan (1) is internally installed with a motor M1, and the motor M1 is connected to a speed regulating circuit; The speed regulation circuit comprises: a starting capacitor C1, a speed regulation capacitor C2, a relay KA4 and a controller; The starting capacitor C1 is installed in series on the starting winding, one end of which is connected to the starting winding, and the other end is connected to the common node of the relay KA4 and the speed regulating capacitor C2 through a line; the relay KA4 and the speed regulating capacitor C2 are connected to the power supply circuit through the common node after being connected in parallel; the controller is connected in parallel to the coil of the relay KA4; When the motor M1 is started, the current in the winding is made to have a close phase difference through the starting capacitor C1, thereby generating a rotating magnetic field in the motor M1; By changing the capacitance of the speed regulating capacitor C2, the current and voltage in the circuit of the motor M1 are changed, thereby adjusting the speed of the motor M1; In the power-on state, the power supply circuit is connected through the relay KA4, and in the power-off state, the power supply circuit is disconnected, which is used for starting and stopping control of the motor M1, and further controlling the start and stop of the single-phase AC fan (1); The controller is connected to a wireless signal transmitter via a line, receives signals from the wireless signal transmitter, and is used to regulate the power-on and power-off conditions of the relay KA4.

2. The industrial air conditioner with single-phase AC fan speed regulation function according to claim 1, characterized in that: The speed regulating capacitor C2 is connected in series with a voltage stabilizing resistor R1 for limiting the current.

3. The industrial air conditioner with single-phase AC fan speed regulation function according to claim 1, characterized in that: The casing of the single-phase AC fan (1) is connected to the ground wire via a connecting line, and is used to direct the leakage current into the ground via the grounding line during leakage, thereby avoiding electric shock accidents.

4. The industrial air conditioner with single-phase AC fan speed regulation function according to claim 1, characterized in that: The housing (2) is provided with an air vent (3) on its surface, and the air vent (3) corresponds to the position of the single-phase AC fan (1).

5. The industrial air conditioner with single-phase AC fan speed regulation function according to claim 4, characterized in that: A protective net (4) is installed on the outside of the air vent (3), and a dust filter (5) is fixed on the inside of the protective net (4).

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