Air blower

Abstract

The utility model discloses an air blower which comprises at least two fans which are arranged in parallel. The outlet of each fan is communicated with the output connector, and the output connector is used for collecting airflow of the outlets of the at least two fans and then outputting the airflow; the console is in signal connection with the fans, and the console is used for distributing the rotating speed or the pressure or the flow or the power of each fan based on user requirements and according to a preset rule; and the one-way switch piece is arranged on the communicating pipeline between the outlet of the fan and the output connector and is used for cutting off or opening the communicating pipeline. According to the air blower, the overall air volume of the air blower can be increased, the high-power and large-capacity use requirements are met, the structure is simple and easy to achieve, the use cost of a user is reduced, the failure rate is reduced, and the operation reliability of the air blower is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of blowers, and more particularly to a blower. Background Art

[0002] The types of blowers include Roots blowers, multi-stage low-speed centrifugal blowers, single-stage high-speed centrifugal blowers, air suspension centrifugal blowers, and magnetic levitation centrifugal blowers. They are all air supply equipment that use pressure differences to make gas flow.

[0003] Among them, air-suspended centrifugal blowers have the characteristics of highest efficiency, low noise, maintenance-free, and no oil leakage risk, and have been widely recognized by the market. However, air-suspended blowers are difficult to achieve large capacity; the magnetic bearing load-bearing capacity of the magnetic levitation centrifugal blower is significantly greater than that of the air-suspended bearing, which can achieve greater power, but this form is difficult to control and has a high cost of use; although the two-stage air-suspended centrifugal blower increases the number of impellers, it is limited by the load-bearing capacity of the air-suspended bearing, and the power of a single machine is not high; and the single-stage high-speed centrifugal blower uses a speed-increasing gearbox to increase the speed, which has the risk of oil leakage and a high failure rate.

[0004] In summary, how to provide a blower with high power, low cost and low failure rate is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present utility model is to provide a blower that can increase the overall air volume of the blower, meet the use requirements of high power and large capacity, have a simple structure and are easy to implement, reduce the user's use cost, reduce the failure rate, and ensure the reliability of the blower during operation.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A blower, comprising:

[0008] A fan, at least two of which are arranged in parallel;

[0009] An output connector, the outlet of each fan is connected to the output connector, and the output connector is used to collect and output the airflow from the outlets of at least two fans;

[0010] A control console, connected to the fan signals, for allocating the speed, pressure, flow rate or power of each fan based on user needs and according to preset rules;

[0011] A one-way switch is provided on the connecting pipeline between the outlet of the fan and the output connector, and is used to cut off or open the connecting pipeline.

[0012] Preferably, the control console and each of the fans are connected via a frequency converter, and the frequency converter is used to change the output speed of the drive motor corresponding to the fan;

[0013] The preset rule includes determining the output frequency of each of the frequency converters according to the output power of each of the fans and the output efficiency corresponding to the output power when the console receives a user demand.

[0014] Preferably, a flow sensor is provided at the inlet of the fan, and the control console is used to analyze the output flow of the fan based on the preset rules and the value of the flow sensor to determine the operating status of the fan.

[0015] Preferably, a sensor element is provided in the fan for detecting the wind pressure of the fan, and the control console controls the opening and closing of the corresponding vent valve on the connecting pipeline according to the data of the sensor element.

[0016] Preferably, the one-way switch is arranged in the airflow direction of the fan and close to the output connector, and at least one set of the vent valves is arranged between the fan and the one-way switch.

[0017] Preferably, the sensor element is used to detect the operating temperature of the fan, and the control console is used to control the operation of the inverter according to data from the sensor element to adjust the operating speed and power of the fan.

[0018] Preferably, the output connector is specifically a three-way connector, one air inlet of the three-way connector is connected to at least one of the fans on one side thereof, the other air inlet of the three-way connector is connected to at least one of the fans on the other side thereof, and the air outlet of the three-way connector is used to connect to external gas-using equipment.

[0019] The blower provided by the present invention includes an output connector, a fan, a control console, and a one-way switch, wherein at least two fans are arranged in parallel, and the outlet of each fan is connected to the output connector, and the airflow of at least two fans is converged and sent out through the output connector, and at least two fans can be operated in parallel to increase the overall air volume of the blower, meet the use requirements of high power and large capacity, have a simple structure and are easy to implement, and reduce the user's use cost; in addition, the control console is connected to the fan signal, and the speed or pressure or flow or power of each fan is allocated based on user needs and set rules, so that the performance parameters of the blower output meet the set requirements under user needs The one-way switch is arranged on the connecting pipe between the outlet and the output connector of the fan. When there is a fan that does not need to work or a faulty fan among at least two fans, the one-way switch will not be opened to close the corresponding connecting pipe, so as to avoid the fans from interfering with each other. When a faulty fan occurs, the blower can still continue to operate, so as to ensure the reliability of the blower during operation. The fan is turned on to open the one-way switch to open the corresponding connecting pipe. The opening of the fan here can meet the condition for opening the one-way switch, so that the one-way switch opens and its corresponding connecting pipe is opened for air supply.

[0020] The beneficial effects of the present invention are: by arranging at least two fans in parallel, the overall air volume of the blower is increased to meet the use requirements of high power and large capacity; the control console allocates the speed or pressure or flow or power of each fan based on user needs and set rules to ensure operational reliability; the setting of one-way switch components avoids interference between fans and reduces the failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A structural schematic diagram of the blower provided by the utility model;

[0023] Figure 2 This is another structural schematic diagram of the blower provided by the utility model.

[0024] Figure 1-Figure 2 , the reference numerals include:

[0025] 1-Control console; 2-Inverter; 3-Fan; 4-Vent valve; 5-One-way switch; 6-Output connector; 7-Adapter. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] The core of this utility model is to provide a blower that can increase the overall air volume of the blower, meet the use requirements of high power and large capacity, and has a simple structure that is easy to implement, reduces the user's use cost, reduces the failure rate, and ensures the reliability of the blower during operation. The blower provided by the utility model includes a blower 3, an output connector 6, a control console 1, and a one-way switch 5. Please refer to Figure 1 .

[0028] At least two fans 3 are arranged in parallel and the outlets of the fans 3 are connected to the output connector 6. The airflows from the outlets of at least two fans 3 are collected and output through the output connector 6. By connecting at least two fans 3 in parallel, the overall power and air output of the blower are increased, the flow adjustment range of the blower is expanded, and the user's usage scenarios are expanded. The overall structure is relatively simple, the assembly cost is low, and the user's usage cost is reduced.

[0029] The fans 3 arranged in parallel in the above process can be divided into multiple groups, each group includes at least two fans 3, and each group is controlled by the control console 1.

[0030] Optionally, the output connector 6 may be a three-way connector, a four-way connector, etc., and may be flexibly designed according to actual needs.

[0031] The console 1 is connected to the blowers 3 by signal, controlling their start and stop, speed, and other parameters. Based on user needs and pre-set rules, the console 1 assigns speed, pressure, flow rate, or power to each blower 3. A single parameter, speed, pressure, flow rate, or power, is sufficient. If a specific power output is required, the power levels of the blowers 3 at different gears are used to determine the optimal combination that achieves this specific power, ensuring the highest operating efficiency.

[0032] It should be noted here that the user demand may include the number of running units. For example, if the user needs to start three fans 3 to achieve a specific power, the output power of the three fans 3 can be allocated through the control console 1 accordingly.

[0033] The preset rule here may be a correspondence between at least two of the rotational speed, pressure, flow rate, or power, and allocation is performed based on meeting the demand while ensuring the operating performance of all fans 3 .

[0034] In addition, if only one fan 3 needs to be started, the preset rules include the fan operating parameters when this fan 3 is running. In this state, no allocation operation is required, and the console 1 can be used to control the output of the corresponding speed, flow, pressure or efficiency of the single fan 3.

[0035] Specifically, under the premise that at least two fans 3 are arranged in parallel in the blower, if three fans 3 are started and the others are not operating, the one-way switch parts 5 corresponding to the non-operating fans 3 are in a closed state, and the corresponding connecting pipelines are in a closed state, so that the airflow of the working fans 3 will only flow to the output connector 6, and will not affect the other non-operating fans 3. There is no turbulence between the fans 3, which ensures the reliable stability of the blower during operation and reduces the failure rate.

[0036] On the basis of setting up at least two fans 3, the blower can also have a redundant design. When a faulty fan occurs, the one-way switch 5 corresponding to the faulty fan is in a closed state. The control console 1 can promptly detect the fault based on the signal connection with the fan 3 and promptly shut down the faulty fan 3. Due to the existence of the one-way switch 5, the airflow will not flow in the opposite direction, and the entire blower continues to operate. Setting up multiple fans 3 to achieve a redundant design can also reduce the failure rate of the entire blower system and minimize the impact of fault shutdown on users.

[0037] In this embodiment, the models of the at least two fans 3 may be the same or different, without too many restrictions, and can be flexibly designed according to actual application conditions.

[0038] In this embodiment, the blower should further include a cabinet, and at least two fans 3 are arranged in the cabinet.

[0039] The blower includes an output connector 6, a fan 3, a control console 1, and a one-way switch 5. At least two fans 3 are arranged in parallel, and the outlet of each fan 3 is connected to the output connector 6. The airflow of at least two fans 3 is merged and sent out through the output connector 6. At least two fans 3 can be operated in parallel to increase the overall air volume of the blower, meet the use requirements of high power and large capacity, and have a simple structure that is easy to implement and reduces the user's cost of use.

[0040] The control console 1 is connected to the blowers 3 by signals, and allocates the speed, pressure, flow rate or power of each blower 3 based on user requirements and set rules, so that the performance parameters output by the blower reach the set values ​​under user requirements, ensuring the operational reliability of the blower;

[0041] A one-way switch 5 is provided on the connecting pipe between the outlet of the fan 3 and the output connector 6, and is used to cut off or open the connecting pipe. If one of the at least two fans 3 is not required or is faulty, the one-way switch 5 will not open to cut off or seal the corresponding connecting pipe, thus preventing interference between the fans 3. Furthermore, if a faulty fan occurs, the blower can continue to operate, ensuring operational reliability. When the fan 3 is turned on and the fan outlet pressure is greater than the pressure at the output connector 6, the one-way switch 5 opens, opening the corresponding connecting pipe for air delivery.

[0042] On the basis of the above embodiment, the control console 1 and each fan 3 are connected via a frequency converter 2, and the frequency converter 2 is used to change the output speed of the drive motor corresponding to the fan 3;

[0043] The preset rule includes that when the control console 1 receives a user demand, it determines the output frequency of each inverter 2 according to the output power of each fan 3 and the output efficiency corresponding to the output power.

[0044] Please refer to Figure 1 The control console 1 and the fan 3 are connected through the frequency converter 2. Each frequency converter 2 corresponds to the drive motor of each fan 3, that is, each fan 3 is powered separately. The output speed of the fan 3 is changed by the frequency converter 2 to achieve the adjustment of the overall power, flow, speed or pressure of the blower.

[0045] The inverter 2 is connected to the control console 1 via a signal line, and the signals between the two can be transmitted bidirectionally. The inverter 2 can receive a request from the control console 1 to start at a certain frequency to control the output speed of the drive motor corresponding to the fan 3, and the inverter 2 can transmit its working data to the control console 1, such as the working frequency at different times.

[0046] Based on the premise that the blower can achieve a high output efficiency under any working requirement, the above preset rules are set. The user inputs the required pressure, flow, speed or power into the control console 1 according to his own needs. The control console 1 performs comparative analysis based on the calibrated preset rules to determine the corresponding load of each fan 3 to achieve the highest operating efficiency.

[0047] Specifically, the preset rules include that when the console 1 receives user demand, it determines the output frequency of each inverter 2 based on the output power of each fan 3 and the output efficiency corresponding to the output power. The output power of each fan 3 and the output efficiency corresponding to the output power are recorded in the console 1. Each target output efficiency of the blower corresponds to a set of optimal combinations. This optimal combination can be the corresponding number of fans 3, corresponding output power and other performance parameters; when multiple fans 3 need to be operated, the console 1 can quickly decompose the user demand upon receipt, and allocate the output power target to the specific performance parameters of multiple fans 3, thereby improving the high-efficiency range of the blower and ensuring the efficient output of the blower.

[0048] Based on any of the above embodiments, a flow sensor is provided at the inlet of the fan 3 , and the control console 1 is used to analyze the output flow of the fan 3 based on preset rules and the value of the flow sensor to determine the operating status of the fan 3 .

[0049] A flow sensor is installed at the inlet of fan 3. The flow rate at the inlet and outlet of fan 3 is essentially the same. By installing the flow sensor at the inlet of fan 3, the output flow rate of each fan 3 can be fed back. In addition, by installing the flow sensor at the inlet of fan 3, detection is relatively simple and more accurate than installing it at the outlet.

[0050] The control console 1 analyzes the preset output flow of the fan 3 based on the preset rules and the value of the flow sensor at the inlet of the fan 3 to determine whether the fan 3 is started normally.

[0051] In addition, if a blower 3 fails, the control console 1 can control other normally operating blowers 3 to start up as a replacement without affecting the overall operation of the blower. The failure can be repaired later.

[0052] On the basis of any of the above embodiments, a set of one-way switch components 5 is provided at the outlet of each fan 3. Figure 1 and Figure 2 A set of one-way switch elements 5 is provided at the outlet of each fan 3. The open state of the one-way switch element 5 corresponds to the connection between the communication path between the fan 3 and the output connector 6, and the closed state of the one-way switch element 5 corresponds to the disconnection of the communication path between the fan 3 and the output connector 6.

[0053] The opening and closing of the one-way switch 5 is determined in combination with the operating status of the fan 3. If the fan 3 is normally opened and the output pressure reaches the pressure at which the one-way switch 5 is opened (the output pressure of the fan 3 is greater than the pressure at the output connector 6), the one-way switch 5 is opened; if the output pressure of the fan 3 is less than the pressure at the output connector 6, the one-way switch 5 is closed.

[0054] On the basis of any of the above embodiments, a sensor element is provided in the fan 3 for detecting the wind pressure of the fan, and the control console 1 is used to control the opening and closing of the vent valve 4 on the corresponding connecting pipeline according to the data of the sensor element.

[0055] Please refer to Figure 1 and Figure 2 A vent valve 4 is provided on the communication passage between the fan 3 and the one-way switch member 5, which is used to vent the fan 3, specifically to discharge the output pressure of the fan 3 under an unstable state or an emergency state, to ensure the safe and stable operation of the fan 3.

[0056] Based on any of the above embodiments, the one-way switch 5 is arranged in the air flow direction of the fan 3 and close to the output connector 6, and at least one set of vent valves 4 is arranged between the air outlet of the fan 3 and the one-way switch 5.

[0057] Please refer to Figure 1-2 The one-way switch 5 is arranged in the air flow direction of the fan 3 and close to the output connector 6, so as to prevent the air flow of the operating fan 3 from flowing back into the non-operating fan 3 through the output connector 6, and also to avoid turbulence between the non-operating fan 3 and the operating fan 3.

[0058] At least one set of vent valves 4 is arranged between the air outlet of the fan 3 and the one-way switch 5. When the fan 3 is started and the one-way switch 5 is open, the vent valve 4 can discharge part of the gas when the output pressure of the fan 3 is in an unstable state or in an emergency state, thereby ensuring the safe and reliable operation of the fan 3.

[0059] by Figure 1 For example, when corresponding to one fan 3, two vent valves 4 can also be set, and the actual design can be based on the specific situation.

[0060] Based on any of the above embodiments, the sensor element is used to detect the operating temperature of the fan 3, and the control console 1 is used to control the operation of the inverter 2 according to the data of the sensor element to adjust the operating speed and power of the fan 3.

[0061] The sensor element detects the operating temperature of the fan 3. The control console 1 is used to control the operation of the inverter 2 according to the data of the sensor element to adjust the operating speed and power of the fan 3. When the operating temperature of the fan 3 is too high, the power is reduced in time through frequency conversion to ensure the service life of the fan 3.

[0062] By setting the sensor elements, the operating temperature and wind pressure of the fan 3 can be effectively detected, the working state of the fan 3 can be effectively monitored, the safe operation of the fan 3 can be ensured, and the failure rate can be reduced.

[0063] Based on any of the above embodiments, the output connector 6 is specifically a three-way connector, one air inlet of the three-way connector is connected to at least one fan 3 on one side of it, the other air inlet of the three-way connector is connected to at least one fan 3 on the other side of it, and the air outlet of the three-way connector is used to connect to external gas-using equipment.

[0064] Please refer to Figure 1 If two fans 3 are set in parallel, the output connector 6 is specifically a three-way connector, the two air inlets of the three-way connector are connected to the two fans 3, and the air outlet of the three-way connector is connected to the external gas-using equipment for use.

[0065] Please refer to Figure 2 If N fans 3 are set in parallel, multiple groups of fans 3 can be connected to the output connector 6 through the adapter 7.

[0066] Next, a control method for the blower applied to any of the above items is introduced, and the control method includes:

[0067] The control console 1 allocates the speed, pressure, flow rate or power of each blower 3 according to user requirements and preset rules to select the optimal combination of performance parameters that can achieve maximum output efficiency and ensure the output efficiency of the blower;

[0068] The control console 1 controls the fan 3 to start and monitor its working status. If the working status is abnormal, the control alarm module will sound an alarm to remind the operator to shut down the fan 3.

[0069] When the output pressure of the fan 3 is lower than the pressure at the output connector 6, the one-way switch 5 is closed, and the one-way switch 5 at the non-operating fan 3 and the faulty fan 3 are both in the closed state, avoiding interference with the normally operating fan 3 and ensuring the reliability of the blower operation.

[0070] After the blower completes the air supply operation, the control console 1 controls the working fan 3 to stop.

[0071] Based on the above embodiment, the control console 1 controls the proportional distribution of the speed or pressure or flow or power of the fans 3 according to the output power of each fan 3 and the output efficiency corresponding to the output power, and based on the rule that at least two fans 3 output the maximum output efficiency.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above is a detailed introduction to the blower provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that for ordinary technicians in this technical field, various improvements and modifications can be made to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A blower, characterized in that: include: Fan (3), at least two of the fans (3) are arranged in parallel; An output connector (6), the outlet of each fan (3) is connected to the output connector (6), and the output connector (6) is used to collect and output the airflows from the outlets of at least two fans (3); A control console (1) is connected to the fans (3) by signal, and the control console (1) is used to allocate the speed, pressure, flow rate or power of each fan (3) based on user needs and according to preset rules; A one-way switch (5) is provided on the connecting pipeline between the outlet of the fan (3) and the output connector (6), and is used to cut off or open the connecting pipeline.

2. The blower according to claim 1, characterized in that The control console (1) and each of the fans (3) are connected via a frequency converter (2), and the frequency converter (2) is used to change the output speed of the drive motor corresponding to the fan (3); The preset rule includes determining the output frequency of each of the frequency converters (2) based on the output power of each of the fans (3) and the output efficiency corresponding to the output power when the control console (1) receives a user demand.

3. The blower according to claim 2, characterized in that A flow sensor is provided at the inlet of the fan (3), and the control console (1) is used to analyze the output flow of the fan (3) based on the preset rule and the value of the flow sensor to determine the operating state of the fan (3).

4. The blower according to claim 2 or 3, characterized in that: The fan (3) is provided with a sensor element for detecting the wind pressure of the fan (3), and the control console (1) controls the opening and closing of the corresponding vent valve (4) on the connecting pipeline according to the data of the sensor element.

5. The blower according to claim 4, characterized in that The one-way switch (5) is arranged in the airflow direction of the fan (3) and close to the output connector (6), and at least one set of the vent valves (4) is arranged between the fan (3) and the one-way switch (5).

6. The blower according to claim 5, characterized in that The sensor element is used to detect the operating temperature of the fan (3), and the control console (1) is used to control the operation of the frequency converter (2) based on data from the sensor element to adjust the operating speed and power of the fan (3).

7. The blower according to claim 6, characterized in that The output connector (6) is specifically a three-way connector, one air inlet of the three-way connector is connected to at least one of the fans (3) on one side thereof, the other air inlet of the three-way connector is connected to at least one of the fans (3) on the other side thereof, and the air outlet of the three-way connector is used to connect to an external gas-using device.

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