Water pump motor for mobile air conditioner

Abstract

The application discloses a mobile air conditioner water punching motor, which comprises an upper end cover and a lower end cover, a circuit board is fixedly arranged in the upper end cover and close to the top, and a stator is arranged at the lower end of the circuit board; a connecting reinforcing portion is arranged in the lower end cover, the connecting reinforcing portion is rotationally connected with a rotating shaft, an impeller is fixedly installed at the top end of the rotating shaft, a shielding plate is fixedly connected with the rotating shaft, a rotor is arranged on the upper surface of the shielding plate, and the rotor is arranged outside the stator; the impeller is arranged in a water tank, and a pressure sensor is arranged at the bottom of the water tank; the water punching motor control system comprises a water pressure data collection unit, a water depth judgment unit, a plan data calculation module, an actual data calculation module and the like; the water punching motor is started after ensuring that the water tank has the least amount of water, the problem of idling of the water punching motor is solved, the working state of the water punching motor is adjusted according to the difference between the actual value and the plan value, and the energy-saving and efficient effect is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning equipment, and particularly relates to a water punching motor for a mobile air conditioner. BACKGROUND

[0002] A mobile air conditioner is a portable air conditioning equipment, which is different from a traditional fixed air conditioning system. The mobile air conditioner can be easily moved to a position where cooling is needed without a complicated installation process. The mobile air conditioner usually comprises an indoor unit and an outdoor exhaust pipe. Hot air is discharged outside through the outdoor exhaust pipe to achieve the cooling effect. However, the mobile air conditioner is basically similar to the fixed air conditioner in structure, and both of them have a condenser, an evaporator and the like. The difference between them is that the fixed air conditioner collects the condensed water on the evaporator and then discharges the condensed water to the outside through a pipeline, while the mobile air conditioner collects the condensed water on the evaporator and sprays the condensed water on the condenser through a water punching motor (i.e. a motor device which can spray the water in a water tank through an impeller or the like) to accelerate heat exchange, thereby improving energy efficiency and avoiding shutdown caused by rapid accumulation of the condensed water.

[0003] However, the water punching motor in the current mobile air conditioner is started with the start of the mobile air conditioner, and the running power is uncontrollable. The power cannot be controlled according to the actual situation, and there is a problem of waste of energy. Especially when there is only a small amount of condensed water in the water tank for collecting the condensed water, the condensed water is not enough to be pumped out. In this case, the water punching motor is in idle running, which not only wastes energy but also greatly reduces the service life of the water punching motor. Therefore, there is an urgent need for a water punching motor for a mobile air conditioner which can solve the above problem. SUMMARY

[0004] To address the problems mentioned in the background section, this invention provides a portable air conditioner water pump motor. The technical solution adopted by this invention is as follows: A portable air conditioner water pump motor includes an upper cover and a lower cover disposed below the upper cover. A fixing post is disposed in the middle of the interior of the upper cover, and a through hole is disposed within the fixing post, penetrating its upper and lower surfaces. A circuit board is fixedly disposed near the top of the upper cover, and the circuit board is electrically connected to a wiring harness disposed outside the upper cover. A stator is disposed at the lower end of the circuit board, and the stator is fixedly disposed on the outer surface of the fixing post, and the circuit board is electrically connected to the stator. Equally spaced reinforcing ribs are disposed on the inner wall of the hollow interior of the lower cover. The inner bottom is provided with a connecting reinforcement part, which is rotatably connected to a rotating shaft. The rotating shaft passes upward through the through hole of the fixing pile of the upper end cover and exits through the through hole. An impeller is fixedly installed at the top of the rotating shaft, and a shielding plate is fixedly connected to the rotating shaft. A rotor is fixedly installed on the outer side of the upper surface of the shielding plate, and the rotor is sleeved on the outside of the stator. The impeller is set in the water tank, and a pressure sensor is set at the bottom of the water tank. It also includes a water pumping motor control system, which includes a water pressure data collection unit, a water depth judgment unit, a planned data calculation module, an actual data calculation module, a planned and actual data difference calculation unit, and a water pumping motor working status control unit.

[0005] Furthermore, the output of the water pressure data collection unit is unidirectionally connected to the input of the water depth judgment unit and the water pump motor operating status control unit; the negative output of the water depth judgment unit is unidirectionally connected to the input of the water pressure data collection unit; the positive output of the water depth judgment unit is unidirectionally connected to the input of the planned data calculation module and the actual data calculation module; the output of the planned data calculation module and the actual data calculation module is unidirectionally connected to the input of the calculated and actual data difference calculation unit; and the output of the actual data difference calculation unit is unidirectionally connected to the input of the water pump motor operating status control unit.

[0006] The water pressure data receiving unit is used to collect water pressure data in the water tank through the pressure sensor installed at the bottom of the water tank;

[0007] The water depth determination unit is used to calculate the water depth of the condensate in the water tank according to the liquid pressure formula: P=ρgh, and to determine whether the water depth meets the normal working requirements of the water pumping motor.

[0008] The planned data calculation module is used to calculate the planned spray rate required to maintain the condenser temperature at the optimal operating temperature by continuously receiving current data from the temperature sensor used to detect the condenser temperature.

[0009] The actual data calculation module is configured to calculate and verify the actual spraying rate of the condenser to generate condensate water and be used for spraying;

[0010] The planned and actual data difference calculation unit is configured to calculate the difference between the planned spraying data and the actual spraying data, so as to facilitate subsequent adjustment of the working state of the water spraying motor;

[0011] The water spraying motor working state control unit is configured to adjust the working state of the water spraying motor according to the difference between the planned spraying data and the actual spraying data and the amount of condensate water in the current water tank.

[0012] Further, the planned data calculation module comprises a temperature data collection unit, a temperature step matching unit, a temperature change rate calculation unit and a planned spraying rate calculation unit;

[0013] The temperature data collection unit is unidirectionally connected to the output end of the temperature sensor for detecting the temperature of the condenser, and the output end of the temperature data collection unit is unidirectionally connected to the input end of the temperature step matching unit and the temperature change rate calculation unit, and the output end of the temperature step matching unit and the temperature change rate calculation unit is unidirectionally connected to the input end of the planned spraying rate calculation unit;

[0014] The temperature data collection unit is configured to collect the condenser temperature data detected by the temperature sensor in real time;

[0015] The temperature step matching unit is configured to classify the collected temperature of the condenser by steps, and each step corresponds to a different planned spraying rate;

[0016] The temperature change rate calculation unit is configured to calculate the temperature change rate of the condenser per unit time according to the real-time collected condenser temperature data;

[0017] The planned spraying rate calculation unit is configured to calculate the current and future planned spraying rate by combining the data of the temperature step matching unit and the temperature change rate calculation unit.

[0018] Further, the actual data calculation module comprises a wind volume data collection unit, an indoor data collection unit, a condensate water output rate calculation unit, an output rate verification unit and an actual spraying rate calculation unit; the input end of the wind volume data collection unit and the indoor data collection unit is unidirectionally connected with the output end of the control system of the mobile air conditioner, the output end of the wind volume data collection unit and the indoor data collection unit is unidirectionally connected with the input end of the condensate water output rate calculation unit, the output end of the condensate water output rate calculation unit is unidirectionally connected with the input end of the output rate verification unit, the input end of the output rate verification unit is unidirectionally connected with the output end of the water pressure data collection unit, and the output end of the output rate verification unit is unidirectionally connected with the input end of the actual spraying rate calculation unit;

[0019] The wind volume data collection unit obtains the current air conditioner refrigeration wind volume data by connecting the mobile air conditioner control system.

[0020] The indoor data collection unit obtains the current indoor air temperature and humidity by connecting the mobile air conditioner control system; and the condensate water output rate calculation unit is used for calculating the condensate water output rate according to the current wind volume, the current indoor air temperature and humidity.

[0021] The output rate verification unit is used for verifying the water tank water pressure change rate and the calculated output rate, so as to ensure that the calculation value is within the error allowable range.

[0022] The actual spraying rate calculation unit is used for calculating the actual spraying rate of the water hitting motor in unit time according to the current water tank water depth and the calculated output rate value.

[0023] The mobile air conditioner water hitting motor has the following advantages:

[0024] The water pressure data is collected by arranging the pressure sensor in the water tank, so as to obtain the depth of the condensate water in the water tank; the water hitting motor is started after ensuring that the water tank has the minimum water amount, so as to solve the problem of the idle running of the water hitting motor; the data obtained by the planned data calculation module and the actual data calculation module is used for difference calculation, so as to not only control the water hitting motor to the best power when the planned value is less than the actual value, thereby avoiding energy waste, but also control the water hitting motor to the working state according to the actual situation according to the water depth in the water tank when the planned value is greater than the actual value, thereby solving the problem of uncontrollable power of the water hitting motor, and improving the service life of the water hitting motor. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1It is a main view cross section schematic diagram of a mobile air conditioner water punching motor of the present application;

[0026] Figure 2 It is a main view cross section schematic diagram of omitting lower end cover and pivot part of the present application;

[0027] Figure 3 It is a working flow schematic diagram of water punching motor control system of the present application;

[0028] Figure 4 It is a working flow schematic diagram of plan data calculation module of water punching motor control system;

[0029] Figure 5 It is a working flow schematic diagram of actual data calculation module of water punching motor control system.

[0030] Wherein, 1, pivot; 2, upper end cover; 3, lower end cover; 4, impeller; 5, reinforcing rib; 6, rotor; 7, shielding plate; 8, stator; 9, circuit board; 10, through hole; 11, fixed pile; 12, connecting reinforcing part; 13, wire harness. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0032] As Figures 1-5As shown, a portable air conditioner water pump motor includes an upper cover 2 and a lower cover 3 located below the upper cover 2. A fixing post 11 is located in the middle of the interior of the upper cover 2. A through hole 10 is provided in the fixing post 11, penetrating its upper and lower surfaces. A circuit board 9 is fixedly installed near the top of the upper cover 2. The circuit board is electrically connected to a wiring harness 13 located outside the upper cover. A stator 8 is located at the lower end of the circuit board 9 and is fixedly installed on the outer surface of the fixing post 11. The circuit board 9 and the stator 8 are electrically connected. Equally spaced reinforcing ribs 5 are provided on the inner wall of the hollow interior of the lower cover 3. A connecting reinforcement part 12 is provided at the bottom inner part of the lower cover 3. The connecting reinforcement part 12 is rotatably connected to a rotating shaft 1. The rotating shaft 1 passes upward through the through hole 10 of the fixing post in the upper cover 2 and exits through the through hole 10. An impeller 4 is fixedly installed at the top of the rotating shaft 1. A [missing information - likely a device or component] is fixedly connected to the rotating shaft 1. The shielding plate 7 has a rotor 6 fixedly mounted on its outer surface, which is sleeved on the outside of the stator 8. The impeller 4 is located in a water tank, and a pressure sensor is located at the bottom of the water tank. The system also includes a water pumping motor control system, which includes a water pressure data collection unit, a water depth judgment unit, a planned data calculation module, an actual data calculation module, a planned-actual data difference calculation unit, and a water pumping motor working status control unit. First, the circuit board 9 is energized through the wiring harness 13, thereby generating a magnetic field in the stator 8. The rotor 6 rotates under the action of the magnetic field. The rotor drives the rotating shaft 1 through the shielding plate 7, and the rotating shaft 1 drives the impeller 4 to rotate. This rotation produces an effect similar to centrifugal force, that is, a low-pressure area is generated around the impeller 4. Condensate tends to fill this low-pressure area, so water is drawn in and sprayed onto the condenser.

[0033] The output of the water pressure data collection unit is unidirectionally connected to the input of the water depth judgment unit and the water pump motor operating status control unit. The negative output of the water depth judgment unit is unidirectionally connected to the input of the water pressure data collection unit. The positive output of the water depth judgment unit is unidirectionally connected to the input of the planned data calculation module and the actual data calculation module. The output of the planned data calculation module and the actual data calculation module is unidirectionally connected to the input of the calculated and actual data difference calculation unit. The output of the actual data difference calculation unit is unidirectionally connected to the input of the water pump motor operating status control unit.

[0034] The water pressure data receiving unit is used to collect water pressure data in the water tank through the pressure sensor set at the bottom of the water tank; since the water pressure is greater than the atmospheric pressure, the pressure sensor will detect the pressure value when there is condensation in the water tank.

[0035] The water depth judging unit is configured to calculate the water depth of the condensed water in the water tank according to a liquid pressure formula P = ρgh and judge whether the water depth meets the requirement of normal operation of the water hitting motor; the water tank is a geometric straight cylinder with uniform density and equal upper and lower bottom areas, so the depth of the condensed water in the water tank can be calculated by the formula;

[0036] The plan data calculation module is configured to calculate the planned spraying rate required to keep the condenser temperature at the optimal working temperature by continuously accepting current data of the temperature sensor for detecting the condenser temperature;

[0037] The actual data calculation module is configured to calculate and verify the actual spraying rate of the condensed water generated on the evaporator and available for spraying;

[0038] The plan and actual data difference calculation unit is configured to calculate the difference between the planned spraying data and the actual spraying data, so as to facilitate subsequent adjustment of the working state of the water hitting motor; by calculating the difference, it can be known whether the current output of the condensed water meets the spraying of the condenser, so that the condenser is kept within the optimal working temperature range at all times;

[0039] The water hitting motor working state control unit is configured to adjust the working state of the water hitting motor according to the difference between the planned spraying data and the actual spraying data and the amount of the condensed water in the water tank; when the planned spraying amount is less than the actual spraying amount, the power of the water hitting motor can be reduced to make the planned spraying amount equal to the actual spraying amount, so as to keep the condenser within the optimal working temperature range at all times and reduce the energy consumption of the water hitting motor, while the amount of the condensed water in the water tank is increased in time when the water tank is about to be full, so as to increase the consumption of the condensed water; when the planned spraying amount is greater than the actual spraying amount, the power of the water hitting motor is adjusted to the maximum to speed up the heat exchange of the condenser, while the amount of the condensed water in the water tank is adjusted in time when the water tank is about to reach the minimum water amount, so as to keep the consumption of the condensed water at the same level as the output.

[0040] The plan data calculation module comprises a temperature data collection unit, a temperature step matching unit, a temperature change rate calculation unit and a planned spraying rate calculation unit;

[0041] The input end of the temperature data collection unit is unidirectionally connected with the output end of the temperature sensor for detecting the condenser temperature, the output end of the temperature data collection unit is unidirectionally connected with the input ends of the temperature step matching unit and the temperature change rate calculation unit, and the output ends of the temperature step matching unit and the temperature change rate calculation unit are unidirectionally connected with the input end of the planned spraying rate calculation unit;

[0042] The temperature data collection unit is configured to collect the condenser temperature data detected by the temperature sensor in real time;

[0043] The temperature step matching unit is used to step grade the temperature collected on the condenser, and each step corresponds to a different planned spraying rate;

[0044] The temperature change rate calculation unit is used to calculate the temperature change rate of the condenser per unit time according to the condenser temperature data collected in real time;

[0045] The planned spraying rate calculation unit is used to calculate the current and future planned spraying rates in combination with the data of the temperature step matching unit and the temperature change rate calculation unit; the current output planned spraying rate is the planned spraying rate corresponding to the step in which the current temperature is located; the future spraying rate after a specific time is the planned spraying rate corresponding to the step in which the current temperature is located ± the spraying rate required by the current temperature change rate.

[0046] The actual data calculation module includes an air volume data collection unit, an indoor data collection unit, a condensate water output rate calculation unit, an output rate verification unit, and an actual spraying rate calculation unit; the input ends of the air volume data collection unit and the indoor data collection unit are unidirectionally connected to the output end of the control system of the mobile air conditioner, the output ends of the air volume data collection unit and the indoor data collection unit are unidirectionally connected to the input end of the condensate water output rate calculation unit, the output end of the condensate water output rate calculation unit is unidirectionally connected to the input end of the output rate verification unit, the input end of the output rate verification unit is unidirectionally connected to the output end of the water pressure data collection unit, and the output end of the output rate verification unit is unidirectionally connected to the input end of the actual spraying rate calculation unit;

[0047] The air volume data collection unit obtains the data of the current air conditioning cooling air volume by connecting the mobile air conditioner control system;

[0048] The indoor data collection unit obtains the temperature and humidity of the current indoor air by connecting the mobile air conditioner control system; and the condensate water output rate calculation unit is used to calculate the condensate water output rate according to the current air volume, the temperature and humidity of the current indoor air;

[0049] The output rate verification unit is used to verify the water pressure change rate in the sink and the calculated output rate to ensure that the calculation value is within the error allowable range; since not all and timely condensate water falls and is collected into the sink during condensation, the actual spraying rate is output within the error range by the output rate verification unit;

[0050] The actual spraying rate calculation unit is configured to calculate the actual spraying rate of the water spraying motor in unit time according to the current water depth in the water tank and the calculated output rate value.

[0051] The specific implementation is as follows:

[0052] When the water depth in the water tank of the mobile air conditioner cannot support the normal operation of the water spraying motor, the water depth judgment unit continuously judges the data obtained by the water pressure data collection unit at intervals of a specific time, until the water depth in the water tank meets the minimum water amount required for the normal operation of the water spraying motor, the temperature data collection unit, the temperature step matching unit, the temperature change rate calculation unit and the planned spraying rate calculation unit in the planned data calculation module are used to collect and calculate the current spraying rate and the future spraying rate after a specific time in the future; the air volume data collection unit, the indoor data collection unit, the condensate water output rate calculation unit, the output rate verification unit and the actual spraying rate calculation unit in the actual data calculation module are used to collect and calculate the actual spraying rate that can be achieved by the water spraying motor at present, the difference value calculation unit is used to calculate the difference value, so as to facilitate the subsequent adjustment of the working state of the water spraying motor, and the working state control unit of the water spraying motor is used to adjust the working state of the water spraying motor, when the planned spraying amount is less than the actual spraying amount, the power of the water spraying motor can be reduced to make the planned spraying amount equal to the actual spraying amount, so that the condenser is always kept in the best working temperature range and the energy consumption of the water spraying motor is reduced, and when the water tank is about to be full, the power of the water spraying motor is increased in time to increase the consumption of condensate water; when the planned spraying amount is greater than the actual spraying amount, the power of the water spraying motor is adjusted to the maximum to speed up the heat exchange of the condenser, and when the water tank is about to reach the minimum water amount, the power of the water spraying motor is adjusted in time to keep the consumption of condensate water flat. The pressure sensor is arranged in the water tank to collect the water pressure data, so as to obtain the depth of the condensate water in the water tank, and the water spraying motor is started after ensuring that the water tank has the minimum water amount, and the difference value calculation is performed by using the data obtained by the planned data calculation module and the actual data calculation module, so that the water spraying motor can be adjusted to the best power when the planned value is less than the actual value, and the water spraying motor can be controlled according to the actual situation when the planned value is greater than the actual value, so as to solve the problem that the water spraying motor in the background technology is started with the start of the mobile air conditioner and the running power is uncontrollable, and the power cannot be adjusted according to the actual situation, which causes waste of energy, especially when there is only a small amount of condensate water in the water tank for collecting condensate water, which is not enough for extraction, the water spraying motor is in idle state, which not only consumes energy but also greatly reduces the service life of the water spraying motor.

[0053] The above describes the present application and its embodiments, which are not limited, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the present application, without creative design, similar structure and embodiments of the technical solution are not creative, and should belong to the protection scope of the present application.

Claims

1. A mobile air conditioner water punching motor, characterized in that: The utility model relates to a water spraying motor control system, the water spraying motor control system includes water pressure data collection unit, water depth judgment unit, plan data calculation module, actual data calculation module, plan and actual data difference value calculation unit and water spraying motor working state control unit, the water pressure data collection unit output and water depth judgment unit and water spraying motor working state control unit's input one way connection, water depth judgment unit negative output and water pressure data collection unit input one way connection, water depth judgment unit positive output respectively with plan data calculation module and actual data calculation module's input one way connection, plan data calculation module and actual data calculation module's output all with calculation and actual data difference value calculation unit input one way connection, actual data difference value calculation unit output and water spraying motor working state control unit input one way connection, water pressure data receiving unit is used through setting in the water tank bottom pressure sensor carries out data collection to the water pressure in the water tank, water depth judgment unit is used according to liquid pressure formula: P = rho gh calculates the water depth of condensate in the water tank, and judges whether the water depth satisfies the required of normal work of water spraying motor, plan data calculation module is through the current data of constantly receiving temperature sensor for detecting condenser temperature, calculates the plan spray rate required to keep the condenser temperature at the optimum refrigeration temperature, actual data calculation module is used to calculate and verify the actual spray rate of the condensate produced on the evaporator and can be used for spraying, plan and actual data difference value calculation unit is used for the difference value calculation according to plan spray data and actual spray data, for subsequent adjustment the working state of water spraying motor is convenient. ​ ​ ​ ​ ​ ​ The water punching motor working state control unit is used for adjusting the working state of the water punching motor according to the difference between the planned spraying data and the actual spraying data and the amount of the condensed water in the current water tank.

2. The water-pumping motor of a mobile air conditioner according to claim 1, wherein: The planned data calculation module comprises a temperature data collection unit, a temperature step matching unit, a temperature change rate calculation unit and a planned spraying rate calculation unit. The input end of the temperature data collection unit is unidirectionally connected with the output end of the temperature sensor for detecting the temperature of the condenser, the output end of the temperature data collection unit is unidirectionally connected with the input end of the temperature step matching unit and the temperature change rate calculation unit respectively, and the output end of the temperature step matching unit and the temperature change rate calculation unit are unidirectionally connected with the input end of the planned spraying rate calculation unit. The temperature data collection unit is used for collecting the condenser temperature data detected by the temperature sensor in real time. The temperature step matching unit is used for classifying the collected temperature of the condenser by steps, and each step corresponds to a different planned spraying rate. The temperature change rate calculation unit is used for calculating the temperature change rate of the condenser per unit time according to the collected condenser temperature data in real time. The planned spraying rate calculation unit is used for calculating the current and future planned spraying rates in combination with the data of the temperature step matching unit and the temperature change rate calculation unit.

3. The water pumping motor of a mobile air conditioner according to claim 2, wherein: The actual data calculation module comprises an air volume data collection unit, an indoor data collection unit, a condensed water production rate calculation unit, a production rate verification unit and an actual spraying rate calculation unit, the input end of the air volume data collection unit and the indoor data collection unit is unidirectionally connected with the output end of the control system of the mobile air conditioner, the output end of the air volume data collection unit and the indoor data collection unit is unidirectionally connected with the input end of the condensed water production rate calculation unit, the output end of the condensed water production rate calculation unit is unidirectionally connected with the input end of the production rate verification unit, the input end of the production rate verification unit is unidirectionally connected with the output end of the water pressure data collection unit, and the output end of the production rate verification unit is unidirectionally connected with the input end of the actual spraying rate calculation unit. The air volume data collection unit obtains the current air conditioning cooling air volume data by connecting the mobile air conditioner control system. The indoor data collection unit obtains the temperature and humidity of the current indoor air by connecting the mobile air conditioner control system. The condensed water production rate calculation unit is used for calculating the condensed water production rate according to the current air volume, the temperature and humidity of the current indoor air. The production rate verification unit is used for verifying the calculated production rate according to the water pressure change rate in the water tank, so as to ensure that the calculated value is within the error allowable range. The actual spraying rate calculation unit is used for calculating the actual spraying rate of the water punching motor per unit time according to the water depth in the current water tank and the calculated production rate value.

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