Energy-saving system arranged inside and outside air conditioner indoor and outdoor units

Abstract

The utility model discloses an energy-saving system internally installed and externally installed in an air conditioner indoor unit and an air conditioner outdoor unit, the energy-saving system comprises a condensate water backflow box and an atomization unit, the atomization unit comprises a pump, a pipeline, a spray head and a control circuit, and the condensate water backflow box is installed in the indoor unit; the pump is located in the inner machine and powered by an inner machine power source, the spray head is installed on the outer machine, and the atomization quantity formed by the control circuit is set based on the liquid level in the condensate water backflow box or based on the on-off time formed by the control circuit. On one hand, the energy-saving system is effectively contained in the indoor unit and the outdoor unit of the air conditioner, and the air conditioner provides power, so that the use matching degree is increased, and development and sales of the air conditioner are promoted; on the other hand, on the basis of the liquid level of the condensate water, intermittent quantitative atomization is implemented through a control circuit, waste of the condensate water is reduced, the cooling fins have reasonable time for heat exchange so as to improve the heat exchange efficiency, meanwhile, the service life of each electrical appliance element can be prolonged, in addition, atomization is quantitative and adjustable, and practicability is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning energy saving, and in particular relates to an energy-saving system which is internally mounted or externally mounted on an indoor or outdoor unit of an air-conditioning. Background Art

[0002] The air conditioner mainly includes a compressor, a condenser, an expansion valve and an evaporator. When working, the gaseous refrigerant is compressed into a high-temperature and high-pressure gas by the compressor and enters the condenser, and the high-temperature and high-pressure gaseous refrigerant is heat-exchanged into a low-temperature and low-pressure liquid refrigerant. The liquid refrigerant then passes through the expansion valve. Since the refrigerant flowing out of the expansion valve is curbed, the pressure of the refrigerant is reduced after coming out, and the temperature continues to drop, becoming gas-liquid two-phase, and then enters the evaporator. At this time, the refrigerant is heat-exchanged and vaporized in the evaporator, becoming a high-temperature and low-pressure gaseous refrigerant and returning to the compressor to continue circulation.

[0003] In order to achieve effective heat dissipation of the condenser, the condensed water is pumped by a water pump, and then combined with an atomizing nozzle to form water mist to spray to the radiator, thereby achieving the purpose of cooling the radiator.

[0004] However, in actual operation, there are the following defects:

[0005] 1) All the components used are external (external), so they cannot effectively match the air conditioner;

[0006] 2) Because it is external, it needs a separate power supply, and the external power supply used is exposed to the outside for a long time, so its service life is short and the user needs to pay attention to it;

[0007] 3) Considering that the radiator needs sufficient time to evaporate after contacting the water mist, continuous spraying will not only cause waste of condensed water (i.e., the condensed water cannot be evaporated and utilized to the maximum extent), but also the pump used will work for a long time and its service life will be shortened. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an improved energy-saving system which is built-in or externally mounted on the indoor and outdoor units of an air conditioner.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] An energy-saving system installed inside and outside the indoor and outdoor units of an air conditioner, comprising a condensate return box and an atomization unit, wherein the atomization unit comprises a pump, a pipeline, and a nozzle; the condensate return box is installed in the indoor unit of the air conditioner and directly connected to the air conditioner drain pipe; the pump is located in the indoor unit and powered by the power supply of the indoor unit, and the nozzle is installed on the outdoor unit of the air conditioner; the atomization unit also includes a control circuit capable of intermittently controlling the start and stop of the pump, wherein the control circuit is connected to the power supply of the indoor unit, and the atomization quantity formed by the control circuit is set based on the liquid level in the condensate return box or based on the on-off time formed by the control circuit.

[0011] According to a specific implementation and preferred aspect of the utility model, the control circuit includes a MOS tube, a capacitor, a resistor and a liquid level electrode, wherein a height difference is formed between two liquid level electrodes, and the circuit is connected after the liquid in the condensate return tank contacts the two liquid level electrodes, and the pump is started. A simple circuit control method is used to achieve intermittent operation, providing sufficient time for the absorption of the fins and avoiding waste of condensate.

[0012] Preferably, the MOS tube, the capacitor and the resistor form an on-off delay circuit, and after the delay circuit is disconnected, the liquid level in the condensate return tank is between the two liquid level electrodes.

[0013] In some specific implementations, the MOS tube, capacitor, and resistor are located inside the condensate return tank, which is convenient for built-in protection and also facilitates the wiring of the power supply.

[0014] According to another specific implementation and preferred aspect of the utility model, the relative height of the two liquid level electrodes can be adjusted according to the output of condensed water and the demand for atomization heat absorption, so as to increase the practicality of the operation.

[0015] According to another specific implementation and preferred aspect of the utility model, MOS tube, capacitor, resistor, triode and liquid level electrode, wherein two of the liquid level electrodes are connected by the liquid in the condensate return tank and are aligned; the MOS tube, capacitor and resistor form an on-off delay circuit, and after setting the on-off time, the pump start and stop are automatically controlled; the triode and liquid level electrode form a trigger circuit. The purpose of this setting is: 1. The liquid level sensing is stable, reducing the impact of liquid fluctuations; 2. Eliminating the electrode reaction of the liquid level electrode during work, ensuring that the metal conductor part of the sensing electrode works normally; 3. The time control is precise and does not change with the change of external voltage.

[0016] Preferably, an external hose or interface is provided on the condensate return tank, and the air conditioner drain pipe is connected to the external hose or interface, so as to facilitate the assembly of the air conditioner.

[0017] Furthermore, a water filter net cylinder extending into the condensed water return box is provided at the bottom of the external hose or the interface, thereby reducing the probability of nozzle clogging.

[0018] In addition, the pipeline includes a main pipeline and a branch pipeline, wherein the number of branch pipelines corresponds to the number of nozzles. The branch pipelines are used to relatively divert the condensed water to the corresponding nozzles for covering spraying.

[0019] In some specific embodiments, there are two nozzles, and two corresponding branch pipes, and the nozzles are arranged on opposite sides of the heat sink area of ​​the external unit. The wide width formed by the two nozzles covers the heat sink area of ​​the external unit. Here, the areas of the two nozzles should not only cover a wide width, but also intersect with each other to avoid omission, so that each fin of the heat sink of the external unit is contacted by the water mist to improve the uniformity of heat dissipation.

[0020] In addition, external brackets are respectively provided on the external machine, and the external brackets are assembled to the external machine (such as welding, riveting or bolting, etc.), and the nozzles are positioned and installed on the corresponding external brackets.

[0021] At the same time, according to different air-conditioning installation requirements, for example: the indoor unit is installed above the outdoor unit, that is, the condensate return tank is located above the nozzle. At this time, a water stop valve (or one-way valve) is required on the pipeline to prevent the nozzle from dripping due to pressure difference; for example: the condensate return tank is located below or flush with the nozzle. At this time, there is no need to install a water stop valve (or one-way valve), and the pump can prevent the backflow.

[0022] Specifically, the water stop valve includes a valve body, a valve ball disposed inside the valve body, and an elastic member, wherein the elastic member contacts the valve ball to close the bottom of the channel; and external joints are provided at both ends of the valve body. That is, both ends of the external joint are respectively connected to the pipeline, and the installation position of the water stop valve is not limited.

[0023] Due to the implementation of the above technical solution, the utility model has the following advantages compared with the prior art:

[0024] The existing air conditioner energy-saving components are all external (external), so they cannot effectively match the use of the air conditioner; at the same time, because they are external, they need a separate power supply, and the external power supply used is exposed to the outside for a long time, with a short service life, requiring users to pay attention; in addition, considering that the radiator needs sufficient time to evaporate after contacting the water mist, continuous spraying will not only cause waste of condensed water (that is, the condensed water cannot be evaporated to the maximum extent), but also the pump used will work for a long time, and the service life will be shortened, etc. The utility model cleverly solves the various deficiencies of the existing structure by overall design of the structure of the energy-saving system. After adopting the air-conditioning energy-saving system, the condensate return box and some parts of the atomization unit are integrated and installed on the indoor and outdoor units of the air-conditioning. During assembly, it is only necessary to assemble and connect the pipes. At the same time, when the energy-saving system is working, the atomization quantity is set according to the liquid level difference or the on-off time of the circuit, and the system is shut down to store water after spraying, and the condenser heat sink is intermittently atomized and cooled. Therefore, on the one hand, the utility model effectively accommodates the energy-saving system in the indoor and outdoor units of the air-conditioning, and the air-conditioning itself provides power to increase the matching degree of use, and also promotes the development and sales of air-conditioning; on the other hand, intermittent quantitative atomization is performed based on the liquid level in the condensate return box or the on-off time of the circuit, which not only reduces the waste of condensate, but also provides a reasonable time for the heat sink to perform heat exchange, so as to improve the heat exchange efficiency, and at the same time, it can also extend the service life of the electrical components of the energy-saving system. In addition, the atomization quantity is adjustable and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the energy-saving system installed inside and outside the indoor and outdoor units of the air conditioner according to Example 1;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of the local structure;

[0027] Figure 3 for Figure 2 Schematic diagram of local structural decomposition;

[0028] Figure 4 Schematic diagram of the circuit and working principle of Example 1;

[0029] Figure 5 It is a structural schematic diagram of the energy-saving system installed inside and outside the indoor and outdoor units of the air conditioner according to Example 2;

[0030] Figure 6 Schematic diagram of the circuit and working principle of Example 2;

[0031] Figure 7 It is a structural schematic diagram of the energy-saving system installed inside and outside the indoor and outdoor units of the air conditioner according to Example 3;

[0032] Figure 8for Figure 7 A magnified schematic diagram of the local structure;

[0033] Fig. 9 for Figure 8 Schematic diagram of local structural decomposition;

[0034] Fig.10 Schematic diagram of the circuit and working principle of Example 3;

[0035] Wherein: 1. condensate return box; 10. box body; 11. box cover;

[0036] 2. Atomizing unit; 20. Pump; 21. Pipeline; 22. Nozzle; 23. Control circuit; 230. MOS tube; 231. Capacitor; 232. Resistor; 233. Liquid level electrode; 234. Transistor; 2a. Water inlet; 2b. Water outlet; 2c. Stand; 2d. Stand cap; x. Wire;

[0037] 3. External hose; 4. Water filter cylinder;

[0038] 5. Water stop valve; 6. Branch pipe; 7. External bracket; 8. Mounting base; Q. Heat sink area; N. Indoor unit; W. Outdoor unit. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. 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 embodiments disclosed below.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] Example 1

[0046] like Figures 1 to 4 As shown, the energy-saving system of this embodiment is built-in and externally installed in the indoor and outdoor units of the air conditioner, which includes a condensate return box 1 and a mist unit 2, wherein the condensate return box 1 is located in the indoor unit N of the air conditioner; the mist unit 2 is partially located in the indoor unit N and the outdoor unit W, and partially located between the indoor unit N and the outdoor unit W.

[0047] In this example, the condensate return box 1 includes a cylindrical box body 10 and a box cover 11, wherein an external hose 3 is provided on the box cover 11, and the external hose 3 is directly connected to the air conditioner drain pipe, and the box body 10 and the box cover 11 are connected by internal and external threads. In some embodiments, a water filter net cylinder 4 extending into the condensate return box 1 is provided at the bottom of the external hose 3. Reduce the probability of nozzle clogging.

[0048] In some specific embodiments, the atomization unit 2 includes a pump 20, a pipeline 21, a nozzle 22, and a control circuit 23 capable of intermittently controlling the start and stop of the pump 20, wherein the pump 20 is located in the indoor unit N and is powered by the power supply of the indoor unit N, and the pump 20 has a water inlet 2a and a water outlet 2b, wherein the water inlet 2a can also be inserted into the bottom of the box body 10 through a filter sleeve and is below the liquid level, and the water outlet 2b is connected to the pipeline 21 of the atomization unit 2 through a connecting pipe; the nozzle 22 is installed on the outdoor unit W of the air conditioner; the control circuit 23 is connected to the power supply of the indoor unit N through a wire x (positive and negative poles), and the atomization quantity formed by the control circuit 23 is controlled based on the liquid level in the condensate return tank 1 and the circuit on-off delay formed by the control circuit 23, and at the same time, the condensate return tank 1 is located below the nozzle 22 or the two are flush.

[0049] In this example, the control circuit 23 includes a MOS tube 230, a capacitor 231, a resistor 232 and a liquid level electrode 233, wherein a height difference is formed between the two liquid level electrodes 233, and the circuit is connected after the liquid in the condensate return tank 1 contacts the two liquid level electrodes 233, and the pump starts. A simple circuit control method is used to achieve intermittent operation (mainly using the capacitor 231 for charging and discharging), providing sufficient time for the absorption of the fins to avoid waste of condensate. The MOS tube 230, the capacitor 231, and the resistor 232 are located inside the condensate return tank 1, which is convenient for built-in protection and convenient for power supply wiring. In short, the height difference formed by the two liquid level electrodes 233, one of the liquid level electrodes 233 is always in the condensate, when the condensate conducts between the two liquid level electrodes 233, it starts to atomize, and after the power is off, the capacitor 231 discharges to extend the work, and the delay time can be set to complete the quantitative atomization of the condensate. In some specific embodiments, the relative height of the two liquid level electrodes 233 can be adjusted. To increase the operability of the settings.

[0050] In addition, there are two nozzles 22, and they are connected to the pipeline 22 (i.e., the main pipe) through two branch pipes 6. At the same time, an external bracket 7 is also provided on the external machine W, and the nozzles 22 are respectively installed on the external bracket 7, and the width of the formed atomization area covers the heat sink area Q of the external machine W. As for the external bracket 7, it is assembled to the external machine, such as welding, riveting or bolting.

[0051] Finally, the control process of the control circuit 23 is as follows:

[0052] 1. The indoor unit (indoor heat exchanger) produces condensed water, which first passes through the condensed water pipe, then passes through the filtered water net cylinder to reach the condensed water return tank;

[0053] 2. When the water level in the condensate return tank reaches the position of the liquid level electrode, the capacitor is charged, the G pole generates a positive voltage, the S pole and the D pole are turned on, the motor is powered, and the water pump pumps water;

[0054] 3. The water stored in the condensate return tank is pumped to the two nozzles above the outdoor unit (outdoor heat exchanger) through a water pump and sprayed onto the heat sink of the outdoor unit;

[0055] 4. The condensed water on the heat sink evaporates and takes away the heat;

[0056] 5. When the water level in the condensate return tank drops below the liquid level electrode, the motor is powered off after a delay of about 1 to 2 seconds through the delay circuit; (delay principle: after the water level drops below the liquid level electrode, the liquid level electrode is disconnected, at this time the capacitor is slowly discharged through the resistor R, the G pole voltage slowly decreases, and after the G pole voltage drops below a certain voltage value, the S pole and the D pole are disconnected, and the water pump is powered off);

[0057] 6. As the machine works, repeat the five steps 1-2-3-4-5.

[0058] Of course, it should be noted that the delay circuit can also be replaced by a liquid level switch to achieve the same effect, but the cost of the liquid level switch is a little higher. At the same time, because the condensate return tank is located below the nozzle, the pump can prevent backflow at this time.

[0059] Example 2

[0060] like Figures 5 and 6 As shown, the energy-saving system of this embodiment, which is built-in and externally installed in the indoor and outdoor units of the air conditioner, has a structure that is basically the same as that of Embodiment 1, except that:

[0061] In this example, the condensate return tank 1 is located above the nozzle 22. Therefore, a one-way valve (or water stop valve) needs to be added to the pipeline 21. Specifically, the water stop valve is a conventional product that can be directly purchased from outside, and includes a valve body, a valve ball arranged inside the valve body, an elastic member, and external joints arranged at both ends of the valve body, wherein the elastic member resists the valve ball to close the bottom of the channel; the two ends of the external joint are respectively connected to the pipeline, and the installation position of the water stop valve is not limited. Here, the function of the water stop valve is mainly to prevent the nozzle 22 from dripping due to pressure difference.

[0062] In some specific embodiments, the atomization quantity can also be controlled by the liquid level difference in the condensate return tank 1. Simply put, the part between the two liquid level differences is the atomization part; of course, the delay circuit designed in Example 1 can also be used for control.

[0063] Example 3

[0064] like Figures 7 to 10 As shown, the energy-saving system of this embodiment, which is built-in and externally installed in the indoor and outdoor units of the air conditioner, has a structure that is basically the same as that of Example 2, except that.

[0065] In this example, the condensate return box 1 is installed in the indoor unit N through the mounting base 8. The cross-section of the box body 10 is elliptical. The box cover 11 and the mounting base 8 are solid (or integrally formed), and the box cover 11 can be inserted into the box body 10 to close the top opening of the box body 10. The mounting base 8 can be placed on the edge of the top opening of the box body 10.

[0066] At the same time, the control circuit 23 includes a MOS tube 230, a capacitor 231, a resistor 232, a liquid level electrode 233, and a triode 234, wherein the two liquid level electrodes 233 are connected by the liquid in the condensate return tank 1 and are aligned, and at the same time, the two ends of the liquid level electrode 233 and the triode 234 are connected to form a trigger circuit, and the MOS tube 230, the capacitor 231, and the resistor 232 form an on-off delay circuit, and after the on-off time is set (that is, the threshold), the pump 20 is automatically controlled to start and stop. This arrangement avoids the problem that the capacitor cannot be charged and discharged normally due to the liquid level electrode. Then, in this example, a bracket 2c and a bracket cap 2d are provided on the mounting base 8, wherein the pump 20 and the control circuit 23 are installed on the bracket 2c, and the bracket cap 2d is covered, and at the same time, the bracket cap 2d presses the connecting wire x (divided into 4 strands, two strands are connected to the positive and negative poles of the pump 20, and two strands are respectively connected to the liquid level electrode 233) with the liquid level electrode 233 and the pump 20 (using the pressure cover only to cover). The purpose of this setting is: 1. The liquid level sensing is stable and the influence of liquid fluctuation is reduced; 2. The electrode reaction of the liquid level electrode during operation is eliminated to ensure that the metal conductor part of the sensing electrode works normally; 3. The time control is accurate and does not change with the change of external voltage.

[0067] In summary, after adopting the air-conditioning energy-saving system, the condensate return box and some parts of the atomization unit are integrated and installed on the indoor and outdoor units of the air-conditioning. During assembly, it is only necessary to assemble and connect the pipes. At the same time, when the energy-saving system is working, the atomization quantity is set according to the liquid level difference or the on-off time of the circuit, and the system is shut down after spraying to store water, so as to intermittently perform atomization cooling on the condenser heat sink. Therefore, on the one hand, the utility model effectively accommodates the energy-saving system in the indoor and outdoor units of the air-conditioning, and the air-conditioning itself provides power to increase the matching degree of use, and also promotes the development and sales of air-conditioning; on the other hand, intermittent quantitative atomization is performed based on the liquid level in the condensate return box or the on-off time of the circuit, which not only reduces the waste of condensate water, but also provides a reasonable time for the heat sink to perform heat exchange, so as to improve It improves heat exchange efficiency and also prolongs the service life of electrical components of the energy-saving system. In addition, the atomization quantity is adjustable and has strong practicality. On the third hand, the use of MOS tube delay circuit (the same is true for the use of liquid level switch) greatly optimizes the utilization efficiency of condensed water and greatly improves the service life of motors and water pumps, and the cost is low. On the third hand, there are many circuit control methods, whether it is through liquid level control or threshold control, the atomization amount can be controlled. In particular, through threshold control, not only can the liquid level sensing be stabilized and the impact of liquid fluctuations be reduced, but also the electrode reaction of the liquid level electrode during work can be eliminated to ensure that the metal conductor part of the sensing electrode works normally. In addition, the time control is precise and does not change with changes in external voltage.

[0068] The above detailed description of the utility model is intended to enable people familiar with the technology in this field to understand the content of the utility model and implement it. It is not intended to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. An energy-saving system installed inside or outside an air conditioner, comprising a condensate return tank and an atomizing unit, wherein the atomizing unit comprises a pump, a pipeline, and a nozzle, and is characterized in that: The condensate return box is installed in the indoor unit of the air conditioner and directly connected to the air conditioner drain pipe; The pump is located in the indoor unit and is powered by the power supply of the indoor unit, and the nozzle is installed on the outdoor unit of the air conditioner; The atomization unit also includes a control circuit capable of intermittently controlling the start and stop of the pump, wherein the control circuit is connected to the power supply of the indoor unit, and the atomization quantity formed by the control circuit is set based on the liquid level in the condensate return tank or based on the on-off time formed by the control circuit.

2. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 1, characterized in that: The control circuit includes a MOS tube, a capacitor, a resistor and a liquid level electrode, wherein a height difference is formed between two of the liquid level electrodes, and the circuit is connected after the liquid in the condensate return tank contacts the two liquid level electrodes, and the pump is started.

3. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 2, characterized in that: The MOS tube, capacitor and resistor form an on-off delay circuit, and after the delay circuit is disconnected, the liquid level in the condensate return tank is between the two liquid level electrodes.

4. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 3, characterized in that: The MOS tube, capacitor and resistor are located inside the condensed water return box.

5. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 2, 3 or 4, characterized in that: The relative heights of the two liquid level electrodes are adjustable.

6. The energy-saving system installed inside or outside the indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The control circuit includes a MOS tube, a capacitor, a resistor, a triode and a liquid level electrode, wherein two of the liquid level electrodes are connected by the liquid in the condensate return tank and are aligned; the MOS tube, the capacitor and the resistor form an on-off delay circuit, and after setting the on-off time threshold, the pump is automatically controlled to start and stop; the triode and the liquid level electrode form a trigger circuit.

7. The energy-saving system installed inside or outside the indoor and outdoor units of an air conditioner according to claim 1, characterized in that: An external hose or interface is provided on the condensate return box, and a water filter net cylinder extending into the condensate return box is provided at the bottom of the external hose or interface; the air conditioning drain pipe is connected to the external hose or interface.

8. The energy-saving system installed inside or outside the indoor and outdoor units of an air conditioner according to claim 1, characterized in that: The pipeline includes a main pipeline and branch pipelines, wherein the number of the branch pipelines corresponds one-to-one to the number of the nozzles.

9. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 8, characterized in that: There are two nozzles, and there are two corresponding branch pipes. The nozzles are arranged on opposite sides of the heat sink area of ​​the external machine, and the width formed by the two nozzles covers the heat sink area of ​​the external machine.

10. The energy-saving system installed inside or outside the indoor and outdoor units of the air conditioner according to claim 9, characterized in that: The external machine is provided with an external bracket respectively, the external bracket is assembled to the external machine or is formed integrally with the external machine, and the nozzle is positioned and installed on the corresponding external bracket.

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