Noise reduction device for swing-type piston compressors

Abstract

One or more techniques and / or systems relate to an oscillating piston compressor having at least one intake port, a silencer port, and an exhaust port in a head plate. The compressor can include a valve plate connected to the head plate and having a sound-attenuating chamber and an exhaust chamber. The compressor can include at least one silencer selectably connected to the silencer port in the head plate and located within the sound-attenuating chamber. The compressor can include an air tube having a first end selectably connected to the head plate air tube port and a second end disposed within the valve plate exhaust chamber. The air tube can be configured to accelerate air flow from the second end toward the first end.

Description

[Technical Field]

[0001] (CROSS-REFERENCE TO RELATED APPLICATIONS) This patent application claims priority to provisional application Ser. No. 63 / 411,711, filed September 30, 2022, the entire contents of which are incorporated herein by reference. [Background technology]

[0002] There is a need for reduced noise and heat generation in swinging piston vacuum pumps and compressors. Operation of swinging piston compressors, especially large compressors, generates a significant amount of noise. Exposure to this noise in the work environment is disruptive. Furthermore, swinging piston compressors generate heat during operation and exhaust unnecessary levels of hot air, reducing efficiency. Therefore, it is desirable to reduce the noise and heat generated by swinging piston compressors. Summary of the Invention [Problem to be solved by the invention]

[0003] This Summary is intended to introduce a selection of concepts in a simplified form that are described below in the Detailed Description. This Summary is not intended to identify key elements or essential features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter. [Means for solving the problem]

[0004] In one embodiment, the disclosed swing piston compressor head assembly can include a head plate having at least one intake port, at least one silencer port, an air tube port, and an external exhaust port. The head assembly can further include a valve plate operably connectable to the head plate. The valve plate can have a sound reduction chamber and an exhaust chamber. The head assembly can include at least one silencer. The silencer can be operably and selectably coupled to the silencer port and disposed within the sound reduction chamber. The head assembly can further include an air tube. The air tube can have a first end operably and selectably coupled to the head plate air tube port and a second end opposite the first end. The air tube can be configured to accelerate air flow from the second end toward the first end.

[0005] In another embodiment, the disclosed oscillating piston compressor head assembly can include a head plate and a valve plate configured to be operably coupled to the head plate. The valve plate can include a sound reduction chamber, an exhaust chamber, a first end, and a second end. The first end of the valve plate can include an intake port, an intake port leaf valve disposed at the intake port, a plurality of exhaust ports, and an exhaust port leaf valve disposed proximate the plurality of exhaust ports. Similarly, the second end of the valve plate can include an intake port, an intake port leaf valve disposed at the intake port, a plurality of exhaust ports, and an exhaust port leaf valve disposed proximate the plurality of exhaust ports.

[0006] In another embodiment, the disclosed oscillating piston compressor head assembly can include a head plate having at least one intake port, at least one silencer port, an air line port, and an external exhaust port. The head assembly can further include a valve plate configured to be operably coupled to the head plate. The valve plate can have a sound reduction chamber, an exhaust chamber, a first end, and a second end. The first end of the valve plate can include an intake port, an intake port leaf valve disposed at the intake port, multiple exhaust ports, and exhaust port leaf valves disposed proximate to the multiple exhaust ports. Similarly, the second end of the valve plate can include an intake port, an intake port leaf valve disposed at the intake port, multiple exhaust ports, and exhaust port leaf valves disposed proximate to the multiple exhaust ports. The multiple exhaust ports at the first end can have an area half the area of ​​the intake port at the first end, and the multiple exhaust ports at the second end can have an area half the area of ​​the intake port at the second end. The head assembly can include at least one silencer. A silencer may be operably and selectively connected to the silencer port and disposed within the sound attenuation chamber.

[0007] To the accomplishment of the foregoing and related ends, the following description and the annexed drawings set forth certain illustrative aspects and embodiments, which are indicative of but a few of the various ways in which one or more aspects may be employed. Other aspects, advantages, and novel features of the disclosure will become apparent from the detailed description considered in conjunction with the accompanying drawings. [Brief explanation of the drawings]

[0008] The subject matter disclosed herein takes form in specific components and arrangements of components, which are described in detail in this specification and illustrated in the accompanying drawings and constitute a part hereof.

[0009] [Figure 1] FIG. 1 shows a perspective view of the assembled compressor. [Figure 2]FIG. 2 shows a front view of the assembled compressor. [Figure 3] FIG. 3 shows a rear view of the assembled compressor. [Figure 4] FIG. 4 shows a perspective view of the compressor head assembly. [Figure 4a] FIG. 4a shows an exploded perspective view of a compressor head assembly with three silencers. [Figure 4b] FIG. 4b shows an exploded perspective view of the compressor head assembly with two silencers. [Figure 4c] FIG. 4c shows an exploded perspective view of the compressor head assembly with one silencer. [Figure 5] FIG. 5 shows a front view of the compressor head assembly. [Figure 6] FIG. 6 shows a rear view of the compressor head assembly. [Figure 7] FIG. 7 shows a plan view of the head plate. [Figure 8] FIG. 8 shows a bottom view of the head plate. [Figure 9] FIG. 9 shows a plan view of the valve plate. [Figure 10] FIG. 10 shows a top view of the head plate, further illustrating the leaf valves and limiters on the cylinder exhaust ports. [Figure 11] FIG. 11 shows a bottom view of the valve plate. [Figure 12] FIG. 12 shows a bottom view of the head plate, further illustrating the leaf valves and limiters on the cylinder intake ports. [Figure 13] FIG. 13 shows a perspective view of an exemplary intake or exhaust limiter. [Figure 14] FIG. 14 shows cross section A, which shows a cross section of the intake and exhaust ports of the head assembly. [Figure 15] FIG. 15 shows cross section B, which shows a cross section of the damping chamber of the head assembly. [Figure 16] FIG. 16 shows cross section C, which is a cross section of the exhaust chamber of the head assembly. DETAILED DESCRIPTION OF THE INVENTION

[0010] The claimed subject matter is described with reference to the drawings, wherein like reference numerals are generally used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the claimed subject matter. It may be evident, however, that the claimed subject matter can be practiced without these specific details. In other instances, structures and devices are shown in block diagram form to illustrate the claimed subject matter.

[0011] The disclosed dual-cylinder oscillating piston compressor can include one or more silencers piped in parallel and selectively and operably connected to a sound-reducing chamber, thereby reducing the operating noise of the compressor. The compressor can also include at least one valve limiter with a slot that minimizes the force acting on a one-way valve (e.g., a leaf valve) within the compressor, further reducing mechanical noise during compressor operation. These features reduce operating noise by 5 to 10 decibels, resulting in a quieter compressor. Furthermore, the compressor head can include heat fins that increase the surface area of ​​the compressor head and dissipate heat generated and exhausted by compressor operation. The disclosed heat fins can reduce head and exhaust temperatures by approximately 40 degrees Celsius (104 degrees Fahrenheit). Therefore, the disclosed compressor is quieter and has better cooling performance than typical dual-cylinder oscillating piston compressors.

[0012] FIG. 1 illustrates the disclosed dual-cylinder oscillating piston compressor 10, including a head assembly 12 and a motor assembly 14. The head assembly 12 can include substantially similar first and second ends 16 and 18. The motor assembly 14 can include substantially similar first and second ends 20 and 22. The motor first end 20 can include a first cylinder 24. The motor second end 22 can include a second cylinder 26. The motor assembly 14 can include a first oscillating piston assembly 28, which can include a first piston head 32. The motor assembly 14 can include a second oscillating piston assembly 30, which can include a second piston head 34. The piston heads 32, 34 are slidably and sealably received within the cylinders 24, 26, respectively. The disclosed compressor is generally used for pressure applications.

[0013] As shown in FIGS. 4 and 4a, the head assembly 12 can include a head plate 50 operably connected to a valve plate 60. The head plate 50 can have a front surface 52, a back surface 54, a top surface 56, and a bottom surface 58. Similarly, the valve plate 60 can have a front surface 62, a back surface 64, a top surface 66, a bottom surface 68, and an O-ring groove 70. The head assembly 12 can further include an O-ring 72 disposed between the head plate 50 and the valve plate 60 and positioned to fit into the O-ring groove 70. The O-ring 72 is compressed between the plates 50 and 60 when the plates are assembled, forming a sealing relationship between the head plate 50, the valve plate 60, and the plate components described in detail below. While an O-ring is used in one embodiment, as shown in FIG. 4a, other sealing means, such as a gasket, can also be used to form a sealing relationship between the plates. In another embodiment, the head assembly 12 can be composed of a single valve plate having all the features of the head plate 50 and the valve plate 60, described in detail below. In yet another embodiment, the head assembly 12 may have more than the individual head plate 50 and valve plate 60. For example, the head assembly 12 may have three, four, or any number of plates as determined by sound engineering judgment, which may be combined to have the described valve plate and head plate characteristics. In one embodiment, the head assembly 12 may be selectively attached and may be retrofitted to an existing compressor.

[0014] As shown in FIGS. 5, 6, 7, and 8, in addition to the front surface 52, rear surface 54, top surface 56, and bottom surface 58, the head plate 50 may further include a head plate first end 80 and a head plate second end 82. The head plate first end 80 and the head plate second end 82 may have substantially similar structures. As shown in FIG. 5, the head plate front surface 52 may include multiple intake ports 84. These intake ports 84 may be in fluid communication with the compressor's ambient environment and multiple intake elbows 86 disposed within the head plate 50. In the embodiment shown in FIG. 5, the head plate 50 may have three intake ports 84. In other embodiments, any number of intake ports may be used to supply air to the compressor. Depending on the configuration and desired performance of the head assembly, one or more of the intake ports may be plugged to prevent air flow through the intake ports. The plugs may be secured in a threaded connection with a set screw, pin, friction fit, or other suitable fastening means. For example, in one embodiment, one silencer can be operably connected to either the first silencer port, the second first silencer port, or the third first silencer port. If two silencers are used, the silencers can be operably connected to the first and second silencer ports, the second and third silencer ports, or the first and third silencer ports. In yet another embodiment, three silencers can be used simultaneously, one operably connected to each silencer port. Configurations in which silencers are connected to other components (e.g., intake ports) to achieve a quieter compressor are also contemplated. As shown in FIG. 6 , the rear face of the head plate 54 can include an external exhaust port 96. The external exhaust port 96 can be in fluid communication with an exhaust elbow 98 disposed within the head plate 50. While the exemplary embodiment of the head plate 50 includes one external exhaust port 96, it should be understood that any number of external exhaust ports 96 and exhaust elbows 98 can be used in the air compressor. As shown in FIG. 7, the top head plate 56 may include a plurality of heat fins 116 .The heat fins can dissipate heat by increasing the surface area of ​​the head plate top 56 exposed to the cooler surrounding air. The head plate top 56 can be nearly completely covered by the heat fins 116 to maximize the cooling effect of the heat fins.

[0015] As shown in FIG. 8 , the head plate bottom 58 may include at least one silencer port 88 adjacent the head plate front surface 52. The at least one silencer port 88 may be in fluid communication with one of the plurality of intake elbows 86. The at least one silencer port 88 may be configured to receive a silencer, as described in detail below. The head plate bottom 58 may further include an air tube port 100 adjacent the head plate rear surface 54. The air tube port 100 may be in fluid communication with the exhaust elbow 98. The air tube port 100 may be configured to receive an air tube, as described in detail below. The head plate bottom 58 may further include a head plate intake chamber 108 extending from the head plate first end 80 to the head plate second end 82. Alternatively, the head plate bottom may include a first head plate intake chamber disposed at the head plate first end 80 and a second head plate intake chamber disposed at the head plate second end 82. The intake chamber 108 can be located proximate the head plate front surface 52. The head plate bottom 58 can further include a first head plate exhaust chamber 112 located at the head plate first end 80 and a second head plate exhaust chamber 114 located at the head plate second end 82. The first and second exhaust chambers 112, 114 can be located proximate the head plate back surface 54. An O-ring 72 located between the head plate 50 and the valve plate 60 provides a sealing relationship between the head plate 50 and the valve plate 60, and a divider 74 can be provided separating the first and second intake chambers 108 from the first and second exhaust chambers 112, 114.

[0016] As shown in FIG. 4a, the head assembly 12 may further include at least one silencer 90. Each silencer 90 may have a first end 92 and a second end 94. The silencer first end 92 may be configured to be operably and selectively connected to one of a plurality of silencer ports 88 provided in the head plate bottom portion 58, such that each silencer 90 may be in fluid communication with the silencer port 88 and, therefore, with the intake elbow 86 and the intake port 84. For example, the at least one silencer 90 may be connected to the silencer port 88 via a threaded connection. In the illustrated embodiment, the at least one silencer 90 may be arranged in parallel with one another. It should be understood that any number of silencers may be used depending on the number of silencer ports in the head assembly and the performance requirements of the head assembly. In the embodiment shown in FIGS. 4a and 15, the head assembly 12 may have three silencers 90. In another embodiment, as shown in Figure 4b, the head assembly 12 can have two silencers 90. In yet another embodiment, as shown in Figure 4c, the head assembly 12 can have one silencer 90. The head assembly can have fewer silencers than corresponding silencer ports. In this case, the silencer ports that do not have a silencer connected can be plugged.

[0017] The head assembly 12 may further include an air tube 102 having a first end 104 and a second end 106. The first end 104 of the air tube may be operatively and selectively connected to a head plate bottom air tube port 100 and in fluid communication with the air tube port 100, and thus in fluid communication with the exhaust elbow 98 and the external exhaust port 96. For example, the air tube 102 may be connected to the air tube port 100 by a threaded connection. The air tube 102 has an air tube length L A and the air pipe inner diameter D AAs shown in FIG. 14, the air tube first end 104 has an air tube inner diameter D A is the air tube inner diameter D at the second end 106 of the air tube A , which allows the air tube inner surface 118 to be wider at the air tube second end 106 and continuously narrow towards the air tube first end 104. The air tube can be formed from a polymer, composite, metal (such as aluminum), or other heat-resistant material.

[0018] As shown in FIGS. 9, 10, 11, and 12, the valve plate 60 may be comprised of a front surface 62, a rear surface 64, a top surface 66, and a bottom surface 68. The valve plate 60 may further include at least one damping chamber 134, which may have an upper damping chamber surface 136 and a lower damping chamber surface 138. The damping chamber 134 may be disposed adjacent to the valve plate front surface 62. As shown in FIG. 15, the at least one damping chamber 134 may include at least one divider wall 135 extending from the bottom damping chamber surface 138 to the upper damping chamber surface 136. The at least one divider wall 135 may divide the damping chamber into multiple independent damping chambers 134. For example, as shown in FIG. 10, the valve plate 60 may have three damping chambers 134 defined by two divider walls 135. The divider walls 135 may generally increase the strength of the valve plate and prevent unwanted twisting. The valve plate may further include an exhaust chamber 140, which may have an exhaust chamber top 142 and an exhaust chamber bottom 144. The exhaust chamber 140 may be adjacent to the valve plate back surface 64. The valve plate 60 may further include a valve plate first end 130 and a valve plate second end 132.

[0019] 4 and 4a, in an assembled state, the head assembly 12 can be configured such that the head plate front face 52 is adjacent to the valve plate front face 62, the head plate rear face 54 is adjacent to the valve plate rear face 64, the head plate first end 80 is adjacent to the valve plate first end 130, and the head plate second end 82 is adjacent to the valve plate second end 132. In this configuration, at least one silencer 90 can be at least partially or entirely disposed within at least one damping chamber 134, with the silencer second end 94 disposed adjacent to the damping chamber bottom 138. In this configuration, the air tube 102 is disposed within the exhaust chamber 140, with the air tube second end 106 disposed adjacent to the exhaust chamber bottom 144. In an embodiment having three silencers 90 and three damping chambers 134, each silencer 90 is disposed within a corresponding damping chamber 134. When assembled, the head plate intake chamber 108 and the head plate exhaust chamber 112 form a gap between the head plate 50 and the valve plate 60, allowing air to flow through the head assembly 12. As shown in Figures 14 and 15, the head plate 50 may have a gap around at least one silencer port 88, thereby allowing fluid communication between the damping chamber 134 and the head plate intake chamber 108.

[0020] 9, 10, 11, and 12, the valve plate first end 130 and the valve plate second end 132 can have substantially similar structures. The valve plate first end 130 can include a first cylinder chamber 146 extending from the valve plate bottom 68. The first cylinder chamber 146 can be located above the first cylinder 24. The valve plate first end 130 can further include a first end intake port 148 extending from the valve plate top 66 to the valve plate bottom 68 of the valve plate 60. The first end intake port 148 can be in fluid communication with the first cylinder chamber 146 and the head plate intake chamber 108. A first end cylinder intake leaf valve 152 can be mechanically or electromechanically connected to the valve plate bottom 68 within the first cylinder chamber 146 and located above the first end intake port 148. The first end intake limiter 154 can be operably connected to the valve plate bottom 68 in the first cylinder chamber 146 by mechanical or electromechanical connection and positioned below the first end cylinder intake leaf valve 152, such that the limiter 154 is configured to limit the operating range of the leaf valve 152.

[0021] The valve plate first end 130 may further include two first end cylinder exhaust ports 150 extending from the valve plate top 66 to the valve plate bottom 68 of the valve plate 60. The first end cylinder exhaust ports 150 may be in fluid communication with the first cylinder chamber 146 and the first head plate exhaust chamber 112. The two cylinder exhaust ports 150 may have an area exactly half the area of ​​the first end cylinder inlet port 148. While the present embodiment includes two cylinder exhaust ports 150, other embodiments may include one or more cylinder exhaust ports. Furthermore, it should be understood that the dimensions of the cylinder exhaust ports 150 may not be exactly half the area of ​​the inlet port 148. A first end cylinder exhaust port leaf valve 156 may be operably connected to the valve plate top 66, such as by mechanical or electromechanical connection. The first end cylinder exhaust port leaf valve 156 is disposed above the two first end cylinder exhaust ports 150. A first end exhaust limiter 158 is operably connected to the valve plate top 66, such as by mechanical or electromechanical connection. The first end exhaust limiter 158 can be positioned above the first end cylinder exhaust port leaf valve 156, such that the exhaust limiter 158 limits the range of operation of the leaf valve 156. In this configuration, the first end exhaust port leaf valve 156 and the first end exhaust port limiter 158 can be disposed within the first head plate exhaust chamber 112 when the head plate 50 and the valve plate 60 are assembled. While an intake leaf valve 152 and an exhaust port leaf valve 156 have been described, it should be understood that any one-way valve selected based on sound engineering judgment can be used.

[0022] The valve plate second end 132 includes a second cylinder chamber 160 extending from the valve plate bottom 68. The second cylinder chamber 160 is disposed above the second cylinder 26 of the motor assembly 14. The valve plate second end 132 may further include a second end intake port 162 extending from the valve plate top 66 to the valve plate bottom 68 of the valve plate 60. The second end intake port 162 may be in fluid communication with the second cylinder chamber 160 and the head plate intake chamber 108. A second end cylinder intake leaf valve 166 may be mechanically or electromechanically connected to the valve plate bottom 68 within the second cylinder chamber 160 and disposed above the second end intake port 162. A second end intake limiter 168 may be operably connected to the valve plate bottom 68 within the second cylinder chamber 160 such that it is mechanically or electromechanically connected thereto. A second end intake limiter 168 may be positioned below the second end cylinder intake leaf valve 166 such that the limiter 168 is configured to limit the operating range of the leaf valve 166 .

[0023] The valve plate second end 132 may further include two second end cylinder exhaust ports 164 extending from the valve plate top 66 to the valve plate bottom 68 of the valve plate 60. The second end cylinder exhaust ports 164 may be in fluid communication with the second cylinder chamber 160 and the second head plate exhaust chamber 114. The two cylinder exhaust ports 164 are exactly half the area of ​​the second end intake port 162. While the present embodiment includes two cylinder exhaust ports 164, other embodiments may include one or more cylinder exhaust ports. Furthermore, the dimensions of the cylinder exhaust ports 164 may not be exactly half the area of ​​the cylinder intake port 162. A second end cylinder exhaust port leaf valve 170 is operably connected to the valve plate top 66, such as by a mechanical or electromechanical connection. The second end cylinder exhaust port leaf valve 170 is disposed above the two second end cylinder exhaust ports 164. Second end cylinder exhaust limiter 172 can be operatively connected to valve plate top 66, such as by mechanical or electromechanical connection. Second end exhaust limiter 172 can be positioned above second end cylinder exhaust port leaf valve 170, with limiter 172 configured to limit the range of operation of leaf valve 170. In this configuration, second end exhaust port leaf valve 170 and second end exhaust limiter 172 can be positioned within second head plate exhaust chamber 114 when head plate 50 and valve plate 60 are assembled.

[0024] Referring to FIG. 13 , the intake and exhaust limiters 154, 158, 168, 172 described herein may be generally positioned above the leaf valves 152, 156, 166, 170 to prevent the leaf valves from blowing off during compressor operation. The intake and exhaust limiters 154, 158, 168, 172 may have an upper surface 174. The intake and exhaust limiters may further define a plurality of slots 176 or grooves in the upper surface 174 to minimize the surface area of ​​the limiters. The limiter slots 176 may reduce forces acting on the leaf valves 152, 156, 166, 170 during pump operation. Additionally, the limiters 154, 158, 168, 172 reduce mechanical noise generated by the valves and limiters during pump operation.

[0025] The dual cylinder oscillating piston compressor described herein generally functions as follows: Air is pumped through the air reference line A shown in FIGS. R Air enters the compressor 10 along the line 138. As shown in FIG. 14, air is drawn in from the surrounding environment through a plurality of intake ports 84. If there are fewer silencers 90 than intake ports 84, the intake ports 84 may be blocked, reducing the amount of air drawn in from the surrounding environment and potentially reducing the full benefit of the compressor's silencer chambers' sound-attenuating properties. From the intake ports 84, air travels through a plurality of intake elbows 86 to a plurality of silencer ports 88 in the head plate bottom 58. The air travels from a silencer first end 92 connected to the silencer ports 88 to a silencer second end 94 adjacent the silencer chamber bottom 138. Each silencer 90 supplies air to one of a plurality of attenuation chambers 134, which are connected in parallel to each other via the head plate intake chamber 108. The air travels from the attenuation chamber bottom 138 through the attenuation chamber top 136 to the head plate intake chamber 108. Air travels from the head plate intake chamber 108 to the cylinder chambers 146, 160 through the cylinder intake ports 148, 162 when the cylinder intake leaf valves 152, 166 are open. The air is compressed within the cylinder chambers 146, 160.

[0026] When the cylinder exhaust port leaf valves 156, 170 are open, air compressed in the cylinder chambers 146, 160 travels through the cylinder exhaust ports 150, 164 to the first and second head plate exhaust chambers 112, 114. The air travels through the first and second head plate exhaust chambers 112, 114 to the exhaust chamber top 142. The air travels from the exhaust chamber top 142 to the exhaust chamber bottom 144 and into the air tube second end 106. The air then travels from the air tube second end 106 to the air tube first end 104 and into the exhaust elbow 98. As described in detail above, because the air tube inner surface 118 narrows toward the air tube first end 104, the air flow increases, or accelerates, as it travels from the air tube second end 106 to the air tube first end 104. From the exhaust elbow 98, the air is exhausted to the external environment through the external exhaust port 96.

[0027] Typically, in a dual oscillating piston compressor, the oscillating piston assemblies are 180 degrees out of phase with each other. Specifically, while one oscillating piston assembly is performing its exhaust stroke, the other oscillating piston assembly is performing its intake stroke. For example, when the first oscillating piston assembly is performing its intake stroke, air enters the sound-attenuating chamber through the intake port, travels to the first intake chamber in the head, and then travels through the first intake port to the first cylinder chamber. Simultaneously, the second oscillating piston assembly performs its exhaust stroke. During the exhaust stroke, air travels from the second cylinder chamber through the second end exhaust port to the second head exhaust chamber, then to the exhaust chamber, through the air tube, and out the external exhaust port.

[0028] The term "exemplary" is intended to mean an example, instance, or illustration. Any aspect or design described herein as "exemplary" is not intended to imply that it is superior to other aspects or designs. Rather, the term "exemplary" is intended to present concepts in a concrete manner. In this application, the term "or" refers to an inclusive, not exclusive, or. That is, unless otherwise specified or clear from the context, "X employs A or B" refers to all combinations that naturally encompass them. That is, "X employs A or B" is satisfied when X employs A, when X employs B, or when X employs both A and B. Furthermore, at least one of A and B and / or the like generally refers to A or B or both A and B. Additionally, as used in this application and the appended claims, "one" or "one" generally refers to "one or more," unless the context clearly dictates the singular form.

[0029] Although the present specification has been described in language specific to structural features and / or method acts, the inventive subject matter defined in the appended claims is not limited to the particular functions or acts described above. Rather, the specific structural features and methods described above are disclosed as exemplary forms of implementing the claims. Of course, those skilled in the art will recognize that many modifications can be made without departing from this structure.

[0030] Moreover, while the present disclosure has been shown and described with respect to one or more embodiments, equivalent alterations and modifications may occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. The present disclosure is intended to include such alterations and modifications, and is limited only by the scope of the following claims. In particular, with respect to the various functions performed by the above-described components (e.g., elements, resources, etc.), the terms used in describing these components shall be construed as corresponding to any component that performs the specified function (e.g., functionally equivalent) of the described component, unless expressly stated otherwise. This includes components that achieve that function even if they are not structurally equivalent, even if they differ from the disclosed structure that performs that function in the embodiments shown herein.

[0031] Furthermore, even if a particular feature of the disclosure is disclosed in only one of multiple embodiments, such feature may be combined with one or more of the features of the other embodiments if desired or advantageous in a particular application. Furthermore, when the terms "including," "having," "comprises," or variations thereof are used in the detailed description or claims, these terms shall have the same inclusive meaning as the term "comprises."

[0032]

[0033] The above is a description of an embodiment. It will be understood by those skilled in the art that the above method and apparatus may incorporate changes and modifications without departing from the general scope of the present invention. All such changes and modifications are intended to be included insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A rocking piston compressor head assembly, A head plate having at least one intake port, at least one silencer port, an air pipe port, and an external exhaust port, A valve plate having a sound attenuation chamber and an exhaust chamber is configured to be operably connected to the head plate, At least one silencer is operably and selectively connected to the silencer port and positioned within the sound attenuation chamber, An oscillating piston compressor head assembly comprising an air pipe having a first end that is operable and selectable to the air pipe port, and a second end that is opposite to the first end, and configured to accelerate the airflow from the second end toward the first end.

2. The rocking piston compressor head assembly according to claim 1, further comprising a plurality of silencer ports and a plurality of silencers, each silencer being selectively engaged with at least one of the silencer ports.

3. The rocking piston compressor head assembly according to claim 2, wherein the plurality of silencer ports are two silencer ports, and the plurality of silencers are two silencers, each silencer being selectively engaged with one of the silencer ports.

4. The rocking piston compressor head assembly according to claim 2, wherein the plurality of silencers are three silencers, the plurality of silencer ports are three silencer ports, and each silencer is selectively engaged with one of the silencer ports.

5. The rocking piston compressor head assembly according to claim 1, wherein the rocking piston compressor head assembly is selectively connected to a compressor.

6. The rocking piston compressor head assembly according to claim 1, wherein the sound attenuation chamber has a plurality of internal walls extending from the bottom to the top of the sound attenuation chamber, the internal walls define a plurality of sound attenuation chambers, and each plurality of sound attenuation chamber is located near each at least one silencer port.

7. The oscillating piston compressor head assembly according to claim 2, wherein each silencer is located in a corresponding sound attenuation chamber.

8. The oscillating piston compressor head assembly according to claim 1, wherein the valve plate further has a first end and a second end, and each of the first end and the second end of the valve plate has an intake port, an intake port leaf valve disposed in the intake port, at least one exhaust port, and an exhaust port leaf valve disposed near the at least one exhaust port.

9. The rocking piston compressor head assembly according to claim 8, further comprising an intake port limiter that limits the operating range of the intake port leaf valve and an exhaust port limiter that limits the operating range of the exhaust port leaf valve at the first and second ends.

10. The oscillating piston compressor head assembly according to claim 1, wherein the air tube further comprises an inner surface defined by the inner diameter of the air tube, the inner diameter of the air tube at the first end is smaller than the inner diameter of the air tube at the second end, and so that the inner surface of the air tube tapers from the second end to the first end of the air tube.

11. The rocking piston compressor head assembly according to claim 9, wherein the intake port limiter and the exhaust port limiter each have a slot defined therein, the slot extending through the intake port limiter and the exhaust port limiter.

12. The head plate further comprises a heat fin, as described in claim 1, for the oscillating piston compressor head assembly.

13. The oscillating piston compressor head assembly according to claim 4, wherein the first and second ends of the valve plate each have two exhaust ports.

14. The rocking piston compressor head assembly according to claim 8, wherein the at least one first end exhaust port has an area equal to half the area of ​​the first end intake port, and the at least one second end exhaust port has an area equal to half the area of ​​the second end intake port.

15. A rocking piston compressor head assembly, A head plate having at least one intake port, at least one silencer port, an air pipe port, and an external exhaust port, A valve plate configured to be operably coupled to the head plate, having a sound attenuation chamber, an exhaust chamber, a first end, and a second end, wherein the first end and the second end of the valve plate each have an intake port, an intake port leaf valve positioned in the intake port, a plurality of exhaust ports, and exhaust port leaf valves positioned adjacent to the plurality of exhaust ports, A plurality of silencers, each silencer being operably and selectively connected to a head plate silencer port, and the plurality of silencers being located within the sound attenuation chamber, The air tube comprises a first end operably and selectively connected to the air tube port, and a second end facing the first end, and is configured to accelerate the airflow from the second end toward the first end. A rocking piston compressor head assembly, wherein the area of ​​the plurality of exhaust ports at the first end is half the area of ​​the intake port at the first end, and the area of ​​the plurality of exhaust ports at the second end is half the area of ​​the intake port at the second end.

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