Pump body structure and compressor

Abstract

The invention provides a pump body structure and a compressor. The pump body structure comprises an air cylinder assembly, two cylinder covers and at least one silencer. The air cylinder assembly comprises at least one air cylinder, the two cylinder covers are arranged at the two ends of the air cylinder assembly respectively, and the two cylinder covers and the air cylinder assembly are provided with a through-flow channel penetrating up and down. The silencer is arranged on the end face, away from the air cylinder assembly, of the cylinder cover, and a silencing cavity of the silencer communicates with the through-flow channel. At least one silencing hole and at least one silencing groove are formed in the abutting position of the cylinder cover provided with the silencer and the air cylinder abutting against the cylinder cover, and the silencing hole is communicated with the through-flow channel at the position through the silencing groove. According to the pump body structure, the air cylinder assembly is provided with the through-flow channel, the silencing hole communicated with the through-flow channel through the silencing groove is formed in the abutting position of the cylinder cover connected with the silencer and the air cylinder, the noise of the whole machine can be reduced through the additionally-arranged silencing hole, and meanwhile, through the size and position design of the silencing groove and the silencing hole, the noise of the whole machine can be reduced. And noise reduction for a specific frequency range is realized.

Description

Technical Field

[0001] This invention relates to the field of compressor-related technology, and more specifically, to a pump body structure and a compressor. Background Art

[0002] The compressor is the core equipment in an air conditioning system that compresses the refrigerant to participate in the circulation. The compressors used in dryers / dehumidifiers / heat pumps have problems with high noise levels and poor customer experience. In order to meet the needs of customers and the market for low-noise use, it is necessary to develop a pump body structure to reduce compressor exhaust noise and improve the user experience.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] To address the problems in the prior art, the present invention aims to provide a pump body structure and a compressor, wherein the cylinder assembly of the pump body structure is provided with a flow passage and a noise reduction hole communicating with it, thereby achieving noise reduction for a specific frequency range and overall machine noise reduction.

[0005] Specifically, the first aspect of the present invention provides a pump body structure, including a cylinder assembly, two cylinder heads and at least one muffler;

[0006] The cylinder assembly includes at least one cylinder, and two cylinder heads are respectively disposed at both ends of the cylinder assembly, and the two cylinder heads and the cylinder assembly are provided with a vertically penetrating flow channel.

[0007] The muffler is disposed on the end face of the cylinder head opposite to the cylinder assembly, and the muffler's muffler cavity is connected to the flow passage;

[0008] The cylinder head with the muffler abuts against the cylinder, and at the abutment point of the cylinder head, there is at least one muffler hole and at least one muffler groove. The muffler hole is connected to the flow passage at that point through the muffler groove.

[0009] According to a first aspect of the invention, the cylinder assembly includes an upper cylinder, an intermediate plate, and a lower cylinder arranged sequentially.

[0010] The two cylinder heads are respectively the upper cylinder head connected to the upper cylinder and the lower cylinder head connected to the lower cylinder;

[0011] The upper cylinder head is provided with a through first flow hole, the upper cylinder is provided with a through second flow hole, the intermediate plate is provided with a through third flow hole, the lower cylinder is provided with a through fourth flow hole, and the lower cylinder head is provided with a through fifth flow hole. The first flow hole, the second flow hole, the third flow hole, the fourth flow hole, and the fifth flow hole are connected to form the flow channel.

[0012] According to a first aspect of the invention, the muffler hole extends along the axial direction of the cylinder and has a height of h in the axial direction of the cylinder, which satisfies: 0 < h < H1 + H2, where H1 is the height of the cylinder and H2 is the height of the mounting surface of the cylinder head that abuts against the cylinder.

[0013] According to a first aspect of the invention, the radius of the flow channel is R, the radius of the silencing hole is r, and the center distance d between the flow channel and the silencing hole satisfies: d > R + r.

[0014] According to a first aspect of the invention, the cross-section of the silencing hole is circular, elliptical, or polygonal.

[0015] According to a first aspect of the invention, the cross-section of the silencing groove is circular or quadrilateral.

[0016] According to a first aspect of the invention, the silencing groove is straight, arc-shaped, or curved.

[0017] According to a first aspect of the invention, the silencing groove is arc-shaped, and its arc radius is R1, satisfying:

[0018] R 内 +(R 外 -R 内 ) / 3≤R1≤R 内 +2(R 外 -R 内 ) / 3;

[0019] Among them, R 外 and R 内 These are the outer diameter and inner diameter of the silencing groove, respectively.

[0020] According to a first aspect of the invention, the extension lines of both ends of the silencing groove coincide with the center of the flow channel; and / or

[0021] The extension lines at both ends of the silencing groove coincide with the center of the silencing hole.

[0022] A second aspect of the present invention provides a compressor including the pump body structure provided in the first aspect.

[0023] The cylinder assembly of the pump body structure of the present invention is provided with a flow passage. The cylinder head connected to the muffler and the cylinder abutting point are provided with a muffler hole that communicates with the flow passage through a muffler groove. The added muffler hole can reduce the noise of the whole machine. At the same time, through the design of the size and position of the muffler groove and the muffler hole, noise reduction is achieved for a specific frequency range. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without inventive effort. Furthermore, the drawings are merely illustrative diagrams of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0025] Figure 1 This is a schematic diagram of the pump body structure according to the first embodiment of the present invention;

[0026] Figures 2 to 5 These are cross-sectional views of the upper cylinder head of the pump body structure according to different embodiments of the present invention;

[0027] Figure 6 and Figure 7 The figures are longitudinal cross-sectional views of the silencer holes of the pump body structure in different embodiments of the present invention.

[0028] Figures 8 to 12 These are schematic diagrams of the pump body structure according to different embodiments of the present invention;

[0029] Figure 13 This is a schematic diagram of the compressor according to the first embodiment of the present invention. Detailed Implementation

[0030] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present invention can be modified or changed according to different viewpoints and application systems without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0031] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can readily implement it. The present invention can be embodied in many different forms and is not limited to the embodiments described herein.

[0032] In the representation of this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate different embodiments or examples represented in this invention, as well as features of different embodiments or examples, without contradiction.

[0033] To clearly illustrate the present invention, components unrelated to the description are omitted, and the same or similar constituent elements throughout the specification are given the same reference numerals.

[0034] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0035] When we say that a device is "above" another device, this can mean that it is directly above the other device, or it can mean that other devices are present in between. Conversely, when we say that a device is "directly" "above" another device, there are no other devices present in between.

[0036] Although the terms first, second, etc., are used in some instances herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0037] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the invention. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0038] Unless otherwise defined in this application, all terms, including technical and scientific terms as used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with relevant technical literature and the content of this present instruction, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0039] The pump body structure and compressor of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments are not intended to limit the scope of protection of the present invention.

[0040] This invention provides a pump body structure, including a cylinder assembly, two cylinder heads, and at least one muffler. The cylinder assembly includes at least one cylinder, i.e., the cylinder assembly can be a single-cylinder, double-cylinder, or multi-cylinder structure. The two cylinder heads are respectively disposed at both ends of the cylinder assembly, and the two cylinder heads and the cylinder assembly are provided with a vertically penetrating flow channel. The muffler is disposed on the end face of the cylinder head away from the cylinder assembly, and the muffler's silencing chamber is connected to the flow channel. At least one silencing hole and at least one silencing groove are provided at the contact point between the cylinder head with the muffler and the cylinder that abuts against the cylinder head. The silencing hole is connected to the flow channel at that location through the silencing groove.

[0041] The following text uses a twin-cylinder cylinder assembly as an example. Figure 1 This is a schematic diagram of the pump body structure according to the first embodiment of the present invention. The cylinder assembly includes an upper cylinder 11, an intermediate plate 12 and a lower cylinder 13 arranged in sequence. At this time, the two cylinder heads are an upper cylinder head 21 connected to the upper cylinder 11 and a lower cylinder head 22 connected to the lower cylinder 13, respectively. Correspondingly, the pump body structure includes two mufflers, namely an upper muffler 31 disposed on the side of the upper cylinder head 21 away from the upper cylinder 11, and an upper and lower muffler 32 disposed on the side of the lower cylinder 13 away from the lower cylinder 13. In this embodiment, the upper cylinder head 21 is provided with a through first flow hole Q1, the upper cylinder 11 is provided with a through second flow hole Q2, the intermediate plate 12 is provided with a through third flow hole Q3, the lower cylinder 13 is provided with a through fourth flow hole Q4, and the lower cylinder head 22 is provided with a through fifth flow hole Q5. The central axes of the first flow hole Q1, the second flow hole Q2, the third flow hole Q3, the fourth flow hole Q4, and the fifth flow hole Q5 may or may not coincide. The size of each flow hole may be the same or different. It is sufficient that the first flow hole Q1, the second flow hole Q2, the third flow hole Q3, the fourth flow hole Q4, and the fifth flow hole Q5 are connected to form an interconnected flow channel 4.

[0042] In this embodiment, both the upper cylinder head 21 and the lower cylinder head 22 are equipped with mufflers, namely the upper muffler 31 and the lower muffler 32, see... Figure 10 Furthermore, a silencing hole 111 and a silencing groove 112 are provided at the contact point between the upper cylinder head 21 and the upper cylinder 11. The silencing hole 111 is connected to the flow channel 4 through the silencing groove 112. A silencing hole 131 and a silencing groove 132 are provided at the contact point between the lower cylinder head 22 and the lower cylinder 13. The silencing hole 131 is connected to the flow channel 4 through the silencing groove 132.

[0043] The cylinder assembly of the pump body structure of the present invention is provided with a flow passage. A silencer hole communicating with the flow passage is provided at the contact point between the cylinder head and the cylinder, which is connected to the silencer. When used in a compressor, the lower part of the pump body assembly is immersed in refrigeration oil. During compressor operation, the upper and lower cylinders exhaust gas through the exhaust ports provided on the upper and lower cylinder heads (and the exhaust port 311 on the upper silencer 31), respectively. The exhaust gas from the upper cylinder enters the upper silencer and is then discharged through the exhaust port of the upper silencer. The exhaust gas from the lower cylinder enters the lower silencer, passes through the flow passage into the upper silencer, and is then discharged through the exhaust port of the upper silencer. Simultaneously, silencer holes are also provided beside the flow passages of the upper and lower cylinders. The flow passages and silencer holes are connected by silencer grooves formed at the contact surfaces of the cylinder head and / or cylinders. During compression operation, the exhaust gas from the pump body structure passes through the flow passages and communicates with the silencer holes through the silencer grooves, thus reducing exhaust noise.

[0044] Figure 2 and Figure 5 The figures shown are cross-sectional views of the pump body structure at point AA in different embodiments of the present invention. Figure 2 The cross-section of the silencing hole 111a in the embodiment is circular. Figure 3 In this embodiment, the cross-section of the silencing hole 111b is elliptical; in other embodiments, the cross-section of the silencing hole 111a may also be polygonal. The silencing groove 112a may be arc-shaped. Figure 2 ), linear ( Figure 3 The silencing groove 112b in the embodiment can also be curved, such as arc-shaped. The cross-section of the silencing groove can be circular or quadrilateral.

[0045] at the same time, Figure 2 In the embodiment, the extension lines of both ends of the arc-shaped silencing groove 112a coincide with the center of the flow channel 4 and the center of the silencing hole 111a, respectively. Figure 3 In the embodiment, the extension lines of both ends of the linear silencing groove 112b coincide with the center of the flow channel 4 and the center of the silencing hole 111b, respectively. Figure 4 In the embodiment, the extension line of one end of the linear silencing groove 112c does not coincide with the center of the flow channel 4, and the extension line of the other end does not coincide with the center of the silencing hole 111c.

[0046] The cylinder head and cylinder contact area can be provided with multiple muffler holes and the same number of muffler grooves, such as... Figure 5 In one embodiment, two muffler holes 111d and two muffler grooves 112d may be provided at the point where the cylinder head abuts the cylinder.

[0047] Figure 6 and Figure 7The figures are longitudinal cross-sectional views of the silencing holes of the pump body structure in different embodiments of the present invention. The bottom of the silencing hole 111 can be flat, and the bottom of the silencing hole 111' can be arc-shaped.

[0048] Figure 1 In one embodiment, the muffler hole 111 is completely disposed on the end face of the upper cylinder 11 via the muffler groove 112, and the muffler hole 131 and the muffler groove 132 are completely disposed on the end face of the lower cylinder 13. In other embodiments, the muffler hole 111e spans the abutment point between the upper cylinder head 21 and the upper cylinder 11, that is, the muffler hole 111e includes a portion disposed on the upper cylinder 11 and a portion disposed on the upper cylinder head 21. Similarly, the muffler hole 131e spans the abutment point between the lower cylinder head 22 and the lower cylinder 13, that is, the muffler groove 132e includes a portion disposed on the lower cylinder head 22 and a portion disposed on the lower cylinder 13, see Figure 8 .

[0049] Figure 9 In one embodiment, the muffler hole 111f spans the contact point between the upper cylinder head 21 and the upper cylinder 11, that is, the muffler hole 111f includes a portion disposed on the upper cylinder 11 and a portion disposed on the upper cylinder head 21. The muffler hole 131f is disposed on the lower cylinder 13, and the muffler groove 132f is disposed on the lower cylinder head 22. The muffler hole 131f and the muffler groove 132f are connected.

[0050] Figure 9 In this embodiment, the silencing holes 111f and 131f extend along the axial direction of the cylinder, and their axial heights are both h, satisfying: 0 < h < H1 + H2, where H1 is the height of the upper cylinder 11 or the lower cylinder 13, and H2 is the height of the mounting surface of the upper cylinder cover 21 or the lower cylinder cover 22 that abuts against the cylinder. When the depth h of the silencing hole 111f is greater than H1, a silencing through hole is formed on the upper cylinder. During the pump body assembly process, a sealed silencing cavity is formed by the assembly of the intermediate plate 12 to meet the usage requirements.

[0051] Figure 10 In one embodiment, the height h1 and diameter d1 of the muffler hole of the upper cylinder 11 are the same as the height h2 and diameter d2 of the muffler hole of the lower cylinder 13. Figure 11 In the embodiments, the height h1 and diameter d1 of the muffler hole of the upper cylinder 11 are different from the height h2 and diameter d2 of the muffler hole of the lower cylinder 13. The pump body mechanism of the present invention can be designed with muffler grooves and muffler holes of different sizes in the upper cylinder / lower cylinder and the upper cylinder head / lower cylinder head, and set different numbers of muffler holes to achieve frequency offset muffler between two cylinders and multiple muffler holes; designing muffler grooves and muffler holes of the same size can achieve enhanced noise reduction for specific frequency bands.

[0052] Figure 12In the embodiment, the radius of the flow channel 4 is R, the radius of the silencing hole 111h / silencing hole 131h is r, and the center distance d between the flow channel 4 and the silencing hole 111h is d. When d < R + r, the silencing hole 111h is directly connected to the flow channel 4. In this application, when d ≥ R + r, the silencing hole 111h is connected to the flow channel 4 through a shorter silencing groove (not shown in the figure).

[0053] Preferably, the muffler groove is arc-shaped. The arc-shaped muffler groove increases the reflection of exhaust noise during the muffler process, and its arc radius is R1, which satisfies: R_inner + (R_outer - R_inner) / 3 ≤ R1 ≤ R_inner + 2(R_outer - R_inner) / 3, so as to ensure good workability.

[0054] Of course, the cylinder assembly of the present invention can also be a single-cylinder structure, that is, the pump body assembly includes an upper cylinder head, a cylinder, a lower cylinder head, and at least one muffler. The cylinder is provided with a flow passage. During the operation of the compressor, the cylinder exhausts gas through the exhaust port provided on the lower cylinder head. After the gas is exhausted, it enters the lower muffler and then reaches the upper part of the pump body through the exhaust passage for discharge. A muffler hole is provided next to the flow passage of the cylinder. The flow passage and the muffler hole are connected by a muffler groove formed at the contact point between the cylinder head and the cylinder. This connection can achieve multi-stage muffler, thereby reducing exhaust noise.

[0055] The present invention also provides a compressor, Figure 13 This is a schematic diagram of the compressor structure according to the first embodiment of the present invention, including the aforementioned pump body structure. The flow passage and the silencer hole of the pump body structure of the compressor of the present invention are connected by a silencer groove formed at the contact point between the cylinder head and the cylinder. Through the connection between the silencer groove and the silencer hole, multi-stage silencer operation is achieved, thereby reducing exhaust noise and overall machine noise.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0057] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A pump body structure, characterized in that, Includes cylinder assembly, two cylinder heads, and at least one muffler; The cylinder assembly includes at least one cylinder, and two cylinder heads are respectively disposed at both ends of the cylinder assembly, and the two cylinder heads and the cylinder assembly are provided with a vertically penetrating flow channel. The muffler is disposed on the end face of the cylinder head opposite to the cylinder assembly, and the muffler's muffler cavity is connected to the flow passage; The cylinder head with the muffler abuts against the cylinder, and at the abutment point of the cylinder head, there is at least one muffler hole and at least one muffler groove. The muffler hole is connected to the flow passage at that point through the muffler groove.

2. The pump body structure according to claim 1, characterized in that, The cylinder assembly includes an upper cylinder, a middle plate, and a lower cylinder arranged sequentially. The two cylinder heads are respectively the upper cylinder head connected to the upper cylinder and the lower cylinder head connected to the lower cylinder; The upper cylinder head is provided with a through first flow hole, the upper cylinder is provided with a through second flow hole, the intermediate plate is provided with a through third flow hole, the lower cylinder is provided with a through fourth flow hole, and the lower cylinder head is provided with a through fifth flow hole. The first flow hole, the second flow hole, the third flow hole, the fourth flow hole, and the fifth flow hole are connected to form the flow channel.

3. The pump body structure according to claim 1, characterized in that, The muffler hole extends along the axial direction of the cylinder and has a height of h along the axial direction of the cylinder, which satisfies: 0 < h < H1 + H2, where H1 is the height of the cylinder and H2 is the height of the mounting surface of the cylinder head that abuts against the cylinder.

4. The pump body structure according to claim 1, characterized in that, The radius of the flow channel is R, the radius of the silencing hole is r, and the center distance d between the flow channel and the silencing hole satisfies: d > R + r.

5. The pump body structure according to claim 1, characterized in that, The cross-section of the silencing hole is circular, elliptical, or polygonal.

6. The pump body structure according to claim 1, characterized in that, The cross-section of the silencing groove is circular or quadrilateral.

7. The pump body structure according to claim 1, characterized in that, The sound-absorbing groove can be straight, arc-shaped, or curved.

8. The pump body structure according to claim 1, characterized in that, The silencing groove is arc-shaped with a radius of R1, satisfying the following: R 内 +(R 外 -R 内 ) / 3≤R1≤R 内 +2(R 外 -R 内 ) / 3; Among them, R 外 and R 内 These are the outer diameter and inner diameter of the silencing groove, respectively.

9. The pump body structure according to claim 1, characterized in that, The extension lines of both ends of the silencing groove coincide with the center of the flow channel; and / or The extension lines at both ends of the silencing groove coincide with the center of the silencing hole.

10. A compressor, characterized in that, The pump body structure includes any one of claims 1 to 9.

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