Low-noise and energy-saving condenser

Abstract

The utility model relates to a low-noise and energy-saving condenser which comprises a condenser shell, a refrigerant inlet pipe, a refrigerant outlet pipe, a surface air cooler, an axial flow fan, an air inlet, an air outlet, a sealing strip, a spraying device, a control device and the like, wherein the refrigerant inlet pipe, the refrigerant outlet pipe, the surface air cooler, the axial flow fan, the air inlet, the air outlet, the sealing strip, the spraying device, the control device and the like are arranged on the condenser shell. Aiming at the problems of high noise and large energy consumption in the prior art, the utility model adopts the advanced axial flow fan of which the fan is the annular blade, so that the operation noise of the condenser is effectively reduced, and the operation energy consumption is saved at the same time. In addition, a low-temperature environment can be utilized or a surface air cooler is sprayed and cooled, and on the premise of reasonably controlling condensing pressure, noise is further reduced and energy-saving operation is achieved by combining frequency conversion and speed regulation of a fan.

Description

Technical Field

[0001] The utility model belongs to the technical field related to condensers in air-conditioning refrigeration systems, and particularly relates to a low-noise, energy-saving condenser. Background Art

[0002] The condenser is a heat dissipation device that is widely used in power, chemical industry, air conditioning engineering and refrigeration engineering. In the air conditioning refrigeration system, the condenser mainly includes the shell, the surface cooler, the heat exchange fan, the air inlet, the air outlet, the sealing strip and other components. The liquid refrigerant (refrigerant or water, etc.) flows inside the heat exchange tube of the surface cooler, and the air is outside the heat exchange tube of the surface cooler. The surface cooler uses the liquid refrigerant flowing in the heat exchange tube to heat the air flowing into the outside of the heat exchange tube through the air inlet, and then passes the heated air through the fan and is discharged to the outside through the air outlet, thereby cooling the refrigerant flowing through and maintaining the normal circulation of the air conditioning refrigeration system.

[0003] Since circulating air is needed to cool the surface cooler, the condenser is usually installed in an open area outdoors; a large amount of circulating air requires a high-volume, high-power fan. Therefore, when the condenser is working, its fan will inevitably produce noise pollution to the surrounding environment and consume a lot of electricity. Especially at night in summer, the impact is even greater.

[0004] At present, the commonly used condensers mainly use axial flow fans as circulation fans, and their fans are propeller-shaped blades (such as Figure 3 As shown in the figure, the cross-sectional shape of the blades is mostly rectangular, fan-shaped, wing-shaped, etc. As the fan rotates, the tip of the blade can reach a very high speed. At this speed, any deviation will produce complex eddy currents. The noise we usually hear mainly comes from this eddy current. Although the noise problem can be solved to a certain extent by reducing the number of revolutions and increasing the number of blades, it is impossible to fundamentally solve the above problem. Utility Model Content

[0005] Based on this, it is necessary to provide a low-noise, energy-saving condenser to address the problems existing in the prior art.

[0006] Specifically, a low-noise, energy-saving condenser includes a condenser shell, a refrigerant inlet pipe, a refrigerant outlet pipe, a surface cooler, and an axial flow fan with annular blades (such as Figure 2 ), air inlet, air outlet, sealing strip, etc.

[0007] The blades of the fan of the axial flow fan are annular in structure, and the annular blades can greatly reduce the resistance effect caused by the blade tip, thereby achieving the effects of low noise and energy saving.

[0008] Furthermore, the fan is an axial flow fan with annular blades and uses a variable frequency motor. A pressure sensor is provided at the refrigerant inlet pipe. The pressure sensor is connected to the fan motor through a control circuit and can automatically adjust the speed according to the set condensing pressure. Thus, the noise can be accurately controlled when necessary, and energy-saving operation can be achieved.

[0009] Furthermore, the surface cooler may be provided with a spray device.

[0010] Furthermore, the spray device provided on the surface cooler is provided with an opening and closing device, and the opening and closing device is connected to the control device and the pressure sensor through a control line.

[0011] Furthermore, the surface cooler is provided with a spray device which is arranged between the surface cooler and the air inlet.

[0012] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0013] The low-noise, energy-saving condenser provided by the utility model adopts an axial flow fan with annular blades, so that the operating noise of the condenser is effectively reduced and the operating energy consumption is saved. In the summer night when residents are sensitive to noise, the low temperature environment at night can be used, or the surface cooler can be sprayed for cooling. Under the premise of reasonably controlling the condensing pressure, combined with the fan variable frequency speed regulation, the noise can be further effectively reduced and the operation can be energy-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a low-noise, energy-saving condenser provided in an embodiment of the utility model.

[0015] Figure 2 for Figure 1 The fan provided in the figure is a schematic diagram of an axial flow fan with annular blades.

[0016] Figure 3 Schematic diagram of an axial flow fan with propeller-shaped blades.

[0017] Among them, 1. The fan is an axial flow fan with annular blades; 2. Fan motor; 3. Air outlet; 4. Fan bracket; 5. Radiator; 6. Sealing strip; 7. Refrigerant inlet pipe; 8. Shell; 9. Control circuit; 10. Pressure sensor; 11. Control device; 12. Spray device opening and closing device; 13. Spray device; 14. Air inlet; 15. Refrigerant outlet pipe; 16. Annular blades; 17. Propeller-shaped blades. DETAILED DESCRIPTION

[0018] The following will be combined Figure 1, clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0020] See also Figure 1 The utility model provides a low-noise, energy-saving condenser, including a condenser shell 8, and a refrigerant inlet pipe 7, a refrigerant outlet pipe 15, a surface cooler 5, an axial flow fan 1 with annular blades, an air inlet 14, an air outlet 3, a sealing strip 6, a spray device 13, a spray device opening and closing device 12, a pressure sensor 10, a control circuit 9 and a control device 11, etc.

[0021] The air inlet 14 and the air outlet 3 are connected on opposite sides of the shell 8, the refrigerant inlet pipe 7 is connected to the inlet of the cooler 5, the outlet of the cooler 5 is connected to the refrigerant outlet pipe 15, the cooler 5 is placed in the condenser near the air inlet 14, and the fan is an axial flow fan 1 with annular blades placed in the condenser near the air outlet 3.

[0022] The fan is an axial flow fan 1 with an annular blade, and the fan motor 2 is fixed to the housing 8 through the fan bracket 4. The surface cooler 5 is connected to the housing 8 through the sealing strip 6, and a spray device 13 is provided on one side. The spray device inlet is provided with a spray device opening and closing device 12, and the entire spray device 13 is connected to the housing 8.

[0023] A pressure sensor 10 is provided on the refrigerant inlet pipe 7, and the pressure sensor 10 is connected to the fan motor 2 of the axial flow fan 1 with annular blades and the spray device opening and closing device 12 through the control circuit 9 and the control device 11.

[0024] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0025] It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A low-noise, energy-saving condenser, comprising a condenser shell, and a refrigerant inlet pipe, a refrigerant outlet pipe, a surface cooler, an axial flow fan with annular blades, an air inlet, an air outlet, a sealing strip, etc., characterized in that: The air inlet and outlet are fixed on the shell; the refrigerant inlet pipe is connected to the inlet of the surface cooler, and the outlet of the surface cooler is connected to the refrigerant outlet pipe. The surface cooler is placed on the side of the air inlet in the condenser and is connected to the shell through a sealing strip; the fan is an axial flow fan with annular blades, which is placed on the side of the air outlet in the condenser and is fixed to the condenser shell through a fan bracket.

2. A low-noise, energy-saving condenser according to claim 1, characterized in that: The fan is an axial flow fan with annular blades, and the fan motor adopts a variable frequency motor.

3. A low-noise, energy-saving condenser according to claim 2, characterized in that: The refrigerant inlet pipe is provided with a pressure sensor, and the pressure sensor is connected to the fan motor of the axial flow fan with annular blades through a control circuit and a control device.

4. A low-noise, energy-saving condenser according to claim 3, characterized in that: The surface cooler is provided with a spray device.

5. A low-noise, energy-saving condenser according to claim 4, characterized in that: The spray device provided on the surface cooler is provided with an opening and closing device, and the opening and closing device of the spray device is connected with the control device and the pressure sensor through a control line.

6. A low-noise, energy-saving condenser according to claim 5, characterized in that: The spray device provided on the surface cooler is arranged between the surface cooler and the air inlet.

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