Cooling system of air compressor for oxygen production

Abstract

The utility model discloses a heat dissipation system of an air compressor for oxygen production, which comprises fan blades connected with a rotating shaft of a motor and an air guide channel communicated with a motor cavity, the fan blades are arranged in the motor cavity, and the air guide channel comprises an air inlet channel communicated with one end of the motor cavity and an air outlet channel communicated with the other end of the motor cavity. The motor rotating shaft drives the fan blades to rotate, air is sucked into the motor cavity from the air inlet channel, and heat dissipation air passes through the motor cavity and is exhausted from the air outlet channel. The fan blades are installed in the motor cavity and directly blow air to the motor for heat exchange, heat of the motor is brought out through heat dissipation air, and the heat dissipation effect is good. The fan function is obtained by installing the fan blades on the rotating shaft of the motor, so that a motor for driving the fan blades does not need to be independently arranged, and the cost can be reduced. The fan blades are hidden in the motor cavity, and the sound insulation effect is good; the air guide channel and the air compression working cavity are separated and mutually independent to form a totally-enclosed crankcase, so that the sound insulation effect is good; therefore, noise can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of air compressors, in particular to a heat dissipation system of an air compressor for oxygen production. Background Art

[0002] The heat sources of oxygen compressors currently on the market can be divided into two parts: one is the temperature rise caused by the electrothermal effect of the motor; the other is the temperature rise of the compression chamber (cylinder) due to the increase in air internal energy caused by mechanical energy doing work on the air.

[0003] The existing heat dissipation solution is a passive heat dissipation solution: an external fan is used to directly blow air to the outside of the machine body to dissipate heat. The air volume flowing through the compressor surface to participate in heat exchange accounts for a very small proportion of the total heat dissipation air volume. As a result, the utilization efficiency of the heat dissipation air is very low, and a heat dissipation fan with relatively high power and relatively large air volume is required to meet the heat dissipation requirements. Therefore, the speed requirement for the external cooling fan is relatively high. The disadvantage is that the noise of the external cooling fan cannot be ignored and becomes one of the main sources of noise of the oxygen concentrator. It is of great significance to eliminate the influence of the cooling fan noise. In addition, the cost of the external cooling fan is tens of yuan, which is a part of the machine cost that cannot be ignored. If the cooling fan can be omitted, the economic benefits brought about are considerable.

[0004] Therefore, how to design a heat dissipation system that can reduce noise and cost is a technical problem to be solved by the present invention. Utility Model Content

[0005] The main purpose of the utility model is to provide a heat dissipation system for an air compressor for oxygen production, aiming to achieve efficient heat dissipation, reduce noise and heat dissipation costs.

[0006] The utility model proposes a heat dissipation system for an air compressor for oxygen production, wherein the air compressor for oxygen production is provided with mutually independent closed air compression working chamber and motor chamber, wherein a motor is installed in the motor chamber, and a rotating shaft of the motor extends into the air compression working chamber, wherein the heat dissipation system comprises fan blades connected to the rotating shaft of the motor and an air guide channel communicated with the motor chamber, wherein the fan blades are placed in the motor chamber, and the air guide channel comprises an air inlet channel communicated with one end of the motor chamber and an air outlet channel communicated with the other end of the motor chamber.

[0007] Preferably, the heat dissipation system comprises a heat dissipation air guide sleeve sleeved outside the outer stator coil of the motor, and an air guide groove axially penetrating the heat dissipation air guide sleeve and communicating with the motor cavity.

[0008] Preferably, the heat dissipation system includes a guide groove axially penetrating the inner rotor of the motor and communicating with the motor cavity.

[0009] Preferably, the air inlet passage is arranged around the outside of the air compression working chamber.

[0010] Preferably, two air compression working chambers are provided, the motor chamber is horizontally placed between the two air compression working chambers, the air inlet channel is arranged outside one of the air compression working chambers, and the air outlet channel is arranged outside the other air compression working chamber.

[0011] Preferably, the air inlet channel is arranged around one of the air compression working chambers, and the air outlet channel is arranged around another of the air compression working chambers.

[0012] Preferably, the inner rotor includes rotating shafts extending from two ends, and the two rotating shafts extend into the two air compression working chambers respectively; and the fan blades are connected to at least one of the rotating shafts.

[0013] Preferably, the heat dissipation and air guiding sleeve is made of aluminum.

[0014] Preferably, the air guide groove is arranged around the central axis of the heat dissipation and air guide sleeve.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The heat dissipation system of the oxygen production air compressor proposed in the utility model includes a fan blade connected to the rotating shaft of the motor and an air guide channel connected to the motor cavity. The fan blade is placed in the motor cavity, and the air guide channel includes an air inlet channel connected to one end of the motor cavity and an air outlet channel connected to the other end of the motor cavity. The fan blade is driven to rotate by the motor shaft, and air is sucked into the motor cavity from the air inlet channel. The heat dissipation wind passes through the motor cavity and is discharged from the air outlet channel. The fan blade is installed in the motor cavity and blows air directly to the motor for heat exchange. The heat dissipation wind takes out the heat of the motor, and the heat dissipation effect is good.

[0017] A heat dissipation air guide sleeve is provided on the outer sleeve of the outer stator winding package of the motor, and an air guide groove connected to the motor cavity is axially penetrated on the heat dissipation air guide sleeve. A guide groove connected to the motor cavity is axially penetrated on the inner rotor of the motor. The heat dissipation air can directly take away the heat of the outer stator winding package and the inner stator of the motor, further improving the heat dissipation performance.

[0018] The fan function is obtained by installing fan blades on the motor shaft, so that there is no need to separately set up a motor for driving the fan blades, which can reduce costs.

[0019] The fan blades are hidden in the motor cavity, which has good sound insulation effect. The air guide channel is separated from the air compression working chamber and is independent of each other. The closed air compression working chamber is equipped with a crankshaft and connecting rod mechanism connected to the motor shaft, forming a fully enclosed crankcase with good sound insulation effect. Thus, noise can be reduced.

[0020] The air inlet and outlet channels are respectively surrounded by the outside of the crankcase to achieve double sound insulation and further reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a cross-sectional view of the head of the air compressor for oxygen production in an embodiment of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the air compressor head for oxygen production in an embodiment of the utility model.

[0023] Figure 3 It is a schematic structural diagram of the heat dissipation and air guide sleeve in an embodiment of the utility model.

[0024] Figure 4 It is a schematic structural diagram of the inner rotor of the motor in the embodiment of the utility model.

[0025] Figure 5 This is an assembly diagram of the motor, the heat dissipation air guide sleeve, and the fan blades in an embodiment of the utility model.

[0026] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout identify the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0029] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Reference Figures 1 to 5The embodiment of the utility model provides a heat dissipation system for an oxygen-generating air compressor, wherein the oxygen-generating air compressor is provided with a mutually independent closed air compression working chamber 1 and a motor chamber 2, wherein the air compression working chamber 1 is arranged in a first housing, wherein a crankshaft and a connecting rod mechanism are installed in the closed air compression working chamber 1, forming a closed crankcase 10. The motor chamber 2 is arranged in a second housing 20, wherein a motor 3 is installed in the motor chamber 2, wherein the first housing is connected to the second housing 20, wherein a rotating shaft 221 of the motor 3 extends into the air compression working chamber 1, and drives the crankshaft and the connecting rod mechanism to operate.

[0031] The heat dissipation system includes a fan blade 4 connected to the rotating shaft 221 of the motor 3 and an air guide channel connected to the motor cavity 2. The fan blade 4 is placed in the motor cavity 2. The air guide channel includes an air inlet channel 5 connected to one end of the motor cavity 2 and an air outlet channel 6 connected to the other end of the motor cavity 2. When the motor 3 is working, the motor rotating shaft 221 drives the fan blade 4 to rotate, and air is sucked into the motor cavity 2 from the air inlet channel 5. The heat dissipation air passes through the motor cavity 2 and is discharged from the air outlet channel 6. The fan blade 4 is installed in the motor cavity 2, and blows air directly to the motor 3 to perform heat exchange. The heat dissipation air takes out the heat of the motor 3, and the heat dissipation effect is good.

[0032] The heat dissipation system further includes an aluminum heat dissipation air guide sleeve 23 sleeved outside the outer stator coil 21 of the motor 3, an air guide groove 231 axially penetrating the heat dissipation air guide sleeve 23 and communicating with the motor cavity 2, and a flow guide groove 222 axially penetrating the inner rotor 22 of the motor 3 and communicating with the motor cavity 2. The air guide groove 231 is arranged around the central axis of the heat dissipation air guide sleeve 23. Through the arrangement of the air guide groove 231 and the flow guide groove 222, the heat dissipation wind passes through the air guide groove 231 and the flow guide groove 222, directly taking away the heat of the outer stator coil and the inner stator of the motor, further improving the heat dissipation performance.

[0033] In this embodiment, two air compression working chambers 1 are provided, which are respectively arranged in two first shells, the second shell 20 is transversely connected between the two first shells, the motor chamber 2 is transversely placed between the two air compression working chambers 1, and the inner rotor 22 includes a rotating shaft 221 extending from both ends, and the two rotating shafts 221 respectively extend into the two air compression working chambers 1; the air inlet channel 5 is arranged around the periphery of one air compression working chamber, and the air outlet channel 6 is arranged around the periphery of the other air compression working chamber, and the fan blades 4 are connected to the rotating shaft close to the air inlet channel 5.

[0034] The fan function is obtained by installing the fan blades 4 on the motor shaft 224, so that there is no need to separately set up a motor for driving the fan blades, which can reduce costs.

[0035] The fan blades 4 are hidden in the motor cavity 2, and the sound insulation effect is good.

[0036] The air guide channel is separated from the air compression working chamber and is independent of each other. The closed air compression working chamber is equipped with a crankshaft and a connecting rod mechanism connected to the motor shaft, forming a fully enclosed crankcase, forming the first sound insulation. The air inlet channel 5 and the air outlet channel 6 are respectively surrounded by the outside of the crankcase 10, so that the shells of the air inlet channel 5 and the air outlet channel 6 wrap the crankcase 10 inside, forming the second sound insulation, achieving double sound insulation, and further reducing noise.

[0037] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A heat dissipation system for an air compressor for oxygen production, wherein the compressor is provided with a mutually independent closed air compression working chamber and a motor chamber, wherein a motor is installed in the motor chamber, and the rotating shaft of the motor extends into the air compression working chamber, wherein: The heat dissipation system includes fan blades connected to the rotating shaft of the motor and an air guide channel connected to the motor cavity. The fan blades are placed in the motor cavity. The air guide channel includes an air inlet channel connected to one end of the motor cavity and an air outlet channel connected to the other end of the motor cavity.

2. The heat dissipation system of the oxygen production air compressor according to claim 1, characterized in that: The invention comprises a heat dissipation air guide sleeve which is sleeved outside the outer stator coil package of the motor, and an air guide groove which is axially penetrated and arranged on the heat dissipation air guide sleeve and communicated with the motor cavity.

3. The heat dissipation system of the oxygen production air compressor according to claim 2, characterized in that: It also includes a guide groove axially penetrating the inner rotor of the motor and communicating with the motor cavity.

4. The heat dissipation system of the oxygen production air compressor according to claim 1, 2 or 3, characterized in that: The air inlet channel is arranged around the air compression working chamber.

5. The heat dissipation system of the oxygen production air compressor according to claim 1, 2 or 3, characterized in that: There are two air compression working chambers, the motor chamber is horizontally placed between the two air compression working chambers, the air inlet channel is arranged outside one of the air compression working chambers, and the air outlet channel is arranged outside the other air compression working chamber.

6. The heat dissipation system of the oxygen-generating air compressor according to claim 5, characterized in that: The air inlet channel is arranged around one of the air compression working chambers, and the air outlet channel is arranged around another of the air compression working chambers.

7. The heat dissipation system of the oxygen-generating air compressor according to claim 6, characterized in that: The inner rotor of the motor comprises rotating shafts extending from two ends, and the two rotating shafts extend into the two air compression working chambers respectively; and the fan blades are connected to at least one of the rotating shafts.

8. The heat dissipation system of the oxygen production air compressor according to claim 2 or 3, characterized in that: The heat dissipation and air guide sleeve is made of aluminum.

9. The heat dissipation system of the oxygen production air compressor according to claim 2 or 3, characterized in that: The air guide groove is arranged around the central axis of the heat dissipation and air guide sleeve.

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