Pipeline pump for heating ventilation air conditioner

Abstract

The utility model relates to the technical field of heating, ventilation and air conditioning pipeline pumps, in particular to a heating, ventilation and air conditioning pipeline pump which comprises a water inlet pipeline, a water pump motor, a frequency converter, a sensor, a water outlet pipeline and a water pump. The sensor is installed between the water outlet end of the water pump and the inlet end of the water outlet pipeline and electrically connected with the frequency converter through a wire. According to the integrated frequency converter and the sensor, a customer does not need to independently make a control electric cabinet, the installation site is reduced, the investment cost of the customer is reduced, installation is simple and clear, and overcurrent and overvoltage protection is also achieved; the sensor is additionally installed for control, the condition of using tail end water of the water outlet pipeline is fed back to the frequency converter through the sensor, the rotating speed of the water pump motor is automatically adjusted to achieve maximum energy-saving electricity utilization, the water inlet pressure gauge is arranged on the water inlet pipeline in a standard mode, the pipeline water inlet pressure transition state is effectively fed back, and great convenience is brought to pipeline installation.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC pipeline pumps, in particular to a HVAC pipeline pump. Background Art

[0002] HVAC pipeline pump is an important component of HVAC system. Its function is to transport low-temperature, low-pressure refrigerant or hot water to each room or equipment.

[0003] The traditional HVAC circulating pump is operated in the form of an ordinary asynchronous motor pipeline pump controlled by the air conditioning main unit or control cabinet. The air conditioning runs when the water pump runs. There are no energy-saving facilities, and there is no protection for the water pump motor such as over-current and over-voltage. The traditional variable frequency controlled HVAC circulating pump is installed in the same way as the water pump. A variable frequency starting control cabinet is added near the water pump installation. When the air conditioning equipment is running, the variable frequency soft-start water pump is used. This reduces the starting current and saves a certain proportion of electricity. It also protects the water pump motor. However, the control cabinet is relatively large, which increases the customer's investment cost, increases the installation site, and complicates the installation process. Utility Model Content

[0004] The purpose of the utility model is to provide a pipeline pump for HVAC to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A pipeline pump for HVAC includes a water inlet pipeline, a water pump motor, a frequency converter, a sensor, a water outlet pipeline and a water pump, wherein the water pump inlet is connected to the outlet end of the water inlet pipeline, the water pump outlet is connected to the inlet end of the water outlet pipeline, the frequency converter is located on the outer wall of the water pump motor, the frequency converter is electrically connected to the water pump motor through an electrical wire, the sensor is installed between the water pump outlet end and the inlet end of the water outlet pipeline, and the sensor is electrically connected to the frequency converter through a wire.

[0007] As a preferred solution of the utility model, a gate valve is installed on the water inlet pipeline near the inlet end, a check valve is installed on the side of the gate valve away from the inlet end of the water inlet pipeline, a ball valve is installed on the outlet side of the check valve, a pressure gauge is installed on the ball valve, and the inlet end of the ball valve is connected to the water inlet end of the water pump.

[0008] As a preferred solution of the utility model, a gate valve and a pressure gauge are installed on the water outlet pipeline, a ball valve is connected to the inlet end of the water outlet pipeline, and the inlet end of the ball valve is connected to the water outlet end of the water pump.

[0009] As a preferred solution of the utility model, the output end of the water pump motor is connected to the input end of the water pump through a coupling.

[0010] As a preferred solution of the utility model, the connection between the ball valve and the water pump is a soft connection.

[0011] As a preferred solution of the utility model, the frequency converter is electrically connected to an external power supply via a wire.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In response to the problems raised in the background technology, the present application sets a frequency converter on the housing of the water pump motor, and the power supply is directly installed and connected to the frequency converter. The customer does not need to make a separate control cabinet, the installation site is reduced, the customer's investment cost is reduced, the installation is simple and clear, and over-current and over-voltage protection is also provided;

[0014] Sensor control is installed, and the water usage at the end of the water outlet pipeline is fed back to the frequency converter through the sensor to automatically adjust the speed of the water pump motor to achieve maximum energy saving. A water inlet pressure gauge is standard on the water inlet pipeline to effectively feed back the state of the pipeline inlet pressure, which greatly facilitates the pipeline installation and simplifies the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall connection of the utility model.

[0016] In the figure: 1. Water inlet pipe; 2. Water pump motor; 3. Frequency converter; 4. Sensor; 6. Water outlet pipe; 7. Gate valve; 8. Check valve; 9. Ball valve; 10. Pressure gauge. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention.

[0018] Example

[0019] Each device in this application document adopts a conventional model in the prior art, and the control method is to control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which belongs to the common knowledge in this field, so this application document will not explain it in detail.

[0020] See also Figure 1The utility model provides a technical solution: a pipeline pump for HVAC, including a water inlet pipeline 1, a water pump motor 2, a frequency converter 3, a sensor 4, a water outlet pipeline 6 and a water pump, the water pump inlet is connected to the outlet end of the water inlet pipeline 1, the water pump outlet is connected to the inlet end of the water outlet pipeline 6, the frequency converter 3 is located on the outer wall of the water pump motor 2, the frequency converter 3 is electrically connected to the water pump motor 2 through an electrical wire, the frequency converter 3 is electrically connected to an external power supply through a wire, the sensor 4 is installed between the water pump outlet end and the inlet end of the water outlet pipeline 6, the sensor 4 is connected to the frequency converter 3 through a wire The frequency converter 3 is electrically connected; a gate valve 7 is installed on the side of the water inlet pipeline 1 close to the inlet end, a check valve 8 is installed on the side of the gate valve 7 away from the inlet end of the water inlet pipeline 1, a ball valve 9 is installed on the outlet side of the check valve 8, a pressure gauge 10 is installed on the ball valve 9, and the inlet end of the ball valve 9 is connected to the water inlet end of the water pump; a gate valve 7 and a pressure gauge 10 are installed on the water outlet pipeline 6, a ball valve 9 is connected to the inlet end of the water outlet pipeline 6, and the inlet end of the ball valve 9 is connected to the water outlet end of the water pump; the output end of the water pump motor 2 is connected to the input end of the water pump through a coupling; the connection mode of the ball valve 9 and the water pump is a soft connection.

[0021] It should be noted that the motor applied for is a first-level energy-efficient permanent magnet water pump motor, which can effectively save energy by 5%-15% compared with the ordinary asynchronous third-level energy-efficient motor (the energy-saving effect varies according to different working conditions). The built-in PLC control power can realize multi-machine linkage. The standard 150-200 Hz permanent magnet motor can effectively protect the motor from overcurrent and overheating. The maximum asynchronous ordinary motor is 60 Hz.

[0022] Furthermore, the connection between the ball valve 9 and the water pump is a soft connection. The ball valve 9 soft connection is a special accessory used to connect two different pipelines. It can withstand high temperature and high pressure fluids, and has the characteristics of good sealing performance, strong corrosion resistance, and easy installation. The ball valve 9 soft connection is generally made of soft rubber or polytetrafluoroethylene material, which has good elasticity and pressure resistance, and can effectively alleviate the vibration and impact of the pipeline. At the same time, the installation of the ball valve soft connection is also very simple, without the need for professional technical support. You only need to select the appropriate model according to the size and shape of the pipeline, and then connect it to the interface of the pipeline. Moreover, since the ball valve 9 soft connection is made of soft material, it can be easily bent and twisted to adapt to complex pipeline layouts;

[0023] Furthermore, a frequency converter 3 is arranged on the housing of the water pump motor 2, and the power supply is directly installed and connected to the frequency converter 3. The customer does not need to make a separate control cabinet, the installation site is reduced, the customer's investment cost is reduced, the installation is simple and clear, and over-current and over-voltage protection is also provided;

[0024] Furthermore, the frequency converter 3 can adjust the speed of the water pump motor 2 according to the actual load demand to avoid energy waste caused by mechanical transmission loss. When the load fluctuation is small, the frequency converter 3 can make the water pump motor 2 run at a lower speed, thereby reducing energy consumption. When the load fluctuation is large, the frequency converter 3 can make the water pump motor 2 run at a higher speed, but ensure that the production process is not affected. The starting, stopping, braking and other processes of the water pump motor 2 can be accurately controlled according to the production process requirements, effectively preventing production abnormalities that have a negative impact on the product.

[0025] Furthermore, a sensor 4 is installed at the outlet of the water pump for control. The water usage at the end of the water outlet pipeline 6 is fed back to the frequency converter 3 through the sensor 4 to automatically adjust the speed of the water pump motor 2 to achieve maximum energy saving. A water inlet pressure gauge 10 is provided as standard on the water inlet pipeline 1 to effectively feed back the state of the water inlet pressure of the pipeline, which greatly facilitates the installation of the pipeline and simplifies the installation process.

[0026] Furthermore, the integrated self-contained frequency converter 3 and sensor 4 can realize accurate control of the rotation speed of the water pump motor 2, thereby achieving the maximum energy saving effect while meeting the needs of users; in addition, this design can also reduce the installation cost of users, because it does not need to install an additional control cabinet, but can be directly installed on the pipeline, which greatly simplifies the installation process and improves the installation efficiency. At the same time, it is also equipped with a water inlet pressure gauge 10, which can effectively feedback the water inlet pressure state of the pipeline, bringing great convenience to the pipeline installation.

[0027] The utility model workflow:

[0028] When in use, a frequency converter 3 is arranged on the housing of the water pump motor 2, and the power supply is directly installed and connected to the frequency converter 3. The customer does not need to make a separate control cabinet, the installation site is reduced, the customer's investment cost is reduced, the installation is simple and clear, and it also plays an over-current and over-pressure protection role. A sensor 4 is installed at the outlet of the water pump for control. The water use at the end of the pipe of the water outlet pipe 6 is fed back to the frequency converter 3 through the sensor 4 to automatically adjust the speed of the water pump motor 2 to achieve the maximum energy saving and electricity consumption. A water inlet pressure gauge 10 is provided as standard on the water inlet pipe 1 to effectively feed back the state of the pipeline water inlet pressure, which brings great convenience to the pipeline installation. The installation process is simple, and the integrated frequency converter 3 and sensor 4 can realize the precise control of the speed of the water pump motor 2, thereby achieving the maximum energy saving effect while meeting the user's needs. In addition, this design can also reduce the user's installation cost, because it does not need to install an additional control cabinet, but can be directly installed on the pipe, which greatly simplifies the installation process and improves the installation efficiency. At the same time, it is also equipped with a water inlet pressure gauge 10, which can effectively feedback the water inlet pressure state of the pipeline, bringing great convenience to the pipeline installation.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipeline pump for HVAC, comprising a water inlet pipeline (1), a water pump motor (2), a frequency converter (3), a sensor (4), a water outlet pipeline (6) and a water pump, characterized in that: The water inlet of the water pump is connected to the outlet end of the water inlet pipeline (1), the water outlet end of the water pump is connected to the inlet end of the water outlet pipeline (6), the frequency converter (3) is located on the outer wall of the water pump motor (2), the frequency converter (3) is electrically connected to the water pump motor (2) through an electrical wire, the sensor (4) is installed between the water outlet end of the water pump and the inlet end of the water outlet pipeline (6), and the sensor (4) is electrically connected to the frequency converter (3) through a wire.

2. A HVAC pipeline pump according to claim 1, characterized in that: A gate valve (7) is installed on the side of the water inlet pipeline (1) close to the inlet end, a check valve (8) is installed on the side of the gate valve (7) away from the inlet end of the water inlet pipeline (1), a ball valve (9) is installed on the outlet side of the check valve (8), a pressure gauge (10) is installed on the ball valve (9), and the inlet end of the ball valve (9) is connected to the water inlet end of the water pump.

3. A HVAC pipeline pump according to claim 1, characterized in that: The water outlet pipeline (6) is provided with a gate valve (7) and a pressure gauge (10), the inlet end of the water outlet pipeline (6) is connected to a ball valve (9), and the inlet end of the ball valve (9) is connected to the water outlet end of the water pump.

4. A HVAC pipeline pump according to claim 1, characterized in that: The output end of the water pump motor (2) is connected to the input end of the water pump via a coupling.

5. A HVAC pipeline pump according to claim 3, characterized in that: The ball valve (9) is connected to the water pump in a flexible connection.

6. A HVAC pipeline pump according to claim 1, characterized in that: The frequency converter (3) is electrically connected to an external power supply via a wire.

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