Refrigerant compressor and heating and ventilation equipment

Abstract

The utility model relates to a refrigerant compressor and heating and ventilation equipment. The refrigerant compressor comprises a compressor shell and a pump body structure arranged in the compressor shell. The pump body structure comprises an upper silencing cover, an upper bearing, an air cylinder, a lower bearing and a lower silencing cover which are sequentially arranged in the axial direction, an air outlet hole is formed in the upper silencing cover, an upper silencing cavity is formed between the upper silencing cover and the upper bearing, a lower silencing cavity is formed between the lower silencing cover and the lower bearing, and a lower exhaust through hole communicated with the interior of the air cylinder and the lower silencing cavity is formed in the lower bearing. The upper bearing, the air cylinder and the lower bearing are provided with a plurality of refrigerant channels communicated with the upper silencing cavity and the lower silencing cavity in the axial direction in a penetrating mode, the air cylinder comprises an air cylinder body and a flange part arranged on the peripheral side of the air cylinder body in a sleeving mode, and the flange part is connected with the compressor shell. According to the refrigerant compressor disclosed by the utility model, due to the improvement of the refrigerant channel, the refrigerant input force and the heat exchange loss when the pump body structure exhausts can be effectively reduced, and the energy efficiency of the compressor is improved. In addition, due to the fact that the air cylinder is connected with the shell, the inherent frequency of the pump body structure is improved, and the effect of reducing noise is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, in particular to a refrigerant compressor and heating and ventilation equipment. BACKGROUND

[0002] The compressor mainly comprises a compressor shell, a motor, a pump body and a liquid accumulator. The pump body can be divided into a single-cylinder pump body and a double-cylinder pump body according to the number of cylinders. The single-cylinder pump body adopts an up-down exhaust mode. When refrigerant is discharged from the lower exhaust hole of the cylinder, it needs to be discharged into the lower sound cover through the lower bearing and then be discharged into the upper sound cover through the channel penetrating the lower bearing, the cylinder and the upper bearing, and finally be discharged out of the pump body. However, the position of the lower exhaust hole of the pump body is lower than the oil level of the compressor shell. When the refrigerant is discharged downward, the small channel easily causes the refrigerant to have a large resistance, resulting in a large refrigerant input force. When the channel is too large, on the one hand, the distance between the channel and the inside of the cylinder is reduced, which easily causes refrigerant leakage. At the same time, the heat of the high-temperature refrigerant in the channel is transferred to the cylinder, increasing the heat of the refrigerant in the cylinder and thus increasing heat exchange loss. On the other hand, the distance between the channel and the outside of the cylinder is reduced, which easily causes the infiltration of lubricating oil, increasing the oil discharge of the pump body and thus reducing the energy efficiency of the compressor. In addition, the pump body of the compressor is generally connected to the compressor shell through bearings, which causes the natural frequency of the pump body to resonate with other components, resulting in a large noise. SUMMARY

[0003] Therefore, the refrigerant compressor and the heating and ventilation equipment according to the utility model embodiment can effectively reduce the refrigerant input force and heat exchange loss when the pump body structure is exhausted, improve the energy efficiency of the refrigerant compressor and reduce the noise of the refrigerant compressor.

[0004] To achieve the above-mentioned purpose, the utility model embodiment first aspect provides a refrigerant compressor, comprising:

[0005] A compressor shell;

[0006] A pump body structure is coaxially arranged inside the compressor shell; the pump body structure comprises, arranged in sequence along the axial direction, an upper sound insulation cover, an upper bearing, a cylinder, a lower bearing and a lower sound insulation cover; the upper sound insulation cover is provided with a gas outlet hole; an upper sound insulation cavity is formed between the upper sound insulation cover and the upper bearing; the outer circumferential wall of the cylinder is connected with the inner circumferential wall of the compressor shell; the lower sound insulation cavity is formed between the lower sound insulation cover and the lower bearing; the lower bearing is provided with a lower exhaust through hole which communicates the inside of the cylinder with the lower sound insulation cavity; the upper bearing, the cylinder and the lower bearing are provided with a plurality of refrigerant channels which communicate the upper sound insulation cavity and the lower sound insulation cavity in the axial direction; the cylinder comprises a cylinder body and a flange portion which is sleeved on the outer circumferential side of the cylinder body; the outer circumferential wall of the flange portion is connected with the inner circumferential wall of the compressor shell.

[0007] As an implementation form, the inner diameter of the compressor shell is D, the exhaust volume of the pump body structure is V, and the V and the D satisfy the relationship: 4V / πD2≥1.2mm.

[0008] As an implementation form, the inner diameter of the lower exhaust through hole is L, the number of the refrigerant channels is n, and the inner diameter of each refrigerant channel is d; the d, the n and the L satisfy the relationship: 2≤n*d 2 / L2≤4.

[0009] Therefore, according to the refrigerant compressor of the embodiment of the present application, by designing the relationship between the inner diameter L of the lower exhaust through hole of the pump body structure, the number n of the refrigerant channels and the inner diameter d of each refrigerant channel as 2≤n*d 2 / L2≤4, the refrigerant discharged from the lower exhaust through hole has enough channel space to be smoothly discharged into the upper sound insulation cavity after entering the lower sound insulation cavity, effectively improving the exhaust resistance problem of the pump body structure, reducing the heat exchange loss of the compressor and the input force, thereby effectively improving the energy efficiency of the compressor.

[0010] As an implementation form, the upper bearing and the lower bearing are arranged at the upper and lower end faces of the cylinder body, respectively; the refrigerant channels sequentially penetrate the upper bearing, the cylinder body and the lower bearing; the inside of the cylinder body is provided with a compression chamber; the radial width of the cylinder body is t; the t and the d satisfy the relationship: 2≤t / d≤2.5.

[0011] Thus, according to the refrigerant compressor of the embodiment of the utility model, the relationship between the inner diameter d of the refrigerant passage and the radial width t of the cylinder body is designed as 2≤t / d≤2.5, so that the inside and outside of the refrigerant passage from the cylinder body is guaranteed to have a certain sealing distance, which can effectively reduce the refrigerant leakage risk in the refrigerant passage, while ensuring that the refrigerant in the refrigerant passage has sufficient passage space to smoothly discharge into the upper sound-absorbing cavity, thereby effectively improving the efficiency of the compressor.

[0012] As an implementation form, the diameter of the upper bearing is greater than or equal to the diameter of the cylinder body, and the diameter of the upper bearing is less than the diameter of the flange part; the diameter of the lower bearing is greater than or equal to the diameter of the cylinder body, and the diameter of the lower bearing is less than the diameter of the flange part. It can be understood that the cylinder of the embodiment of the utility model is connected and fixed by the outer periphery of the flange part and the inner periphery of the compressor shell, and the upper bearing and the lower bearing are respectively arranged on the upper and lower end surfaces of the cylinder body. Due to the connection of the cylinder and the shell, the natural frequency of the pump body structure is improved, and the effect of reducing noise is achieved.

[0013] As an implementation form, a plurality of refrigerant passages are distributed along the circumferential direction of the cylinder body, and a bolt passage is arranged on both sides of each refrigerant passage, and the bolt passage penetrates the upper sound-absorbing cover, the upper bearing, the cylinder body, the lower bearing, and the lower sound-absorbing cover in sequence.

[0014] As an implementation form, the upper end surface of the cylinder body is provided with an upper exhaust gap communicating with the compression chamber, and the upper bearing is provided with an upper exhaust valve seat communicating with the upper exhaust gap and the upper sound-absorbing cavity; the lower end surface of the cylinder body is provided with a lower exhaust gap communicating with the compression chamber, and the lower bearing is provided with a lower exhaust valve seat communicating with the lower exhaust gap, and the lower exhaust hole communicates with the lower exhaust valve seat.

[0015] As an implementation form, a crankshaft is further included, the crankshaft penetrates the upper sound-absorbing cover, the upper bearing, the cylinder body, the lower bearing, and the lower sound-absorbing cover in sequence, and the crankshaft is provided with a piston, and the piston is located in the compression chamber.

[0016] As an implementation form, the flange part is a circular ring structure, a plurality of oil return passages are arranged on the flange part in the axial direction, and the plurality of oil return passages are distributed along the circumferential direction of the flange part. It can be understood that the cylinder of the embodiment of the utility model opens the oil return passage on the flange part, so as to facilitate the lubricating oil to fall to the lower part of the pump body structure, and ensure that the oil surface inside the compressor shell is located at a certain height.

[0017] As an implementation form, the compressor housing is a closed container for storing refrigeration oil, and an electric component for driving the pump body structure to compress refrigerant is accommodated in the interior of the compressor housing.

[0018] As an implementation form, at least a natural refrigerant or an HFC-based refrigerant or an HFO-based refrigerant is used as the refrigerant compressed by the pump body structure.

[0019] As an implementation form, the natural refrigerant is at least one of R290, CO2, or a mixture containing the same; the HFC-based refrigerant is at least one of R32, R410A, R134a, R404A, R407C, or a mixture containing the same; and the HFO-based refrigerant is at least one of R454B, R454C, R513A, R1234yf, or a mixture containing the same.

[0020] As an implementation form, the refrigeration oil is at least one of POE oil, PVE oil, or a mixture containing the same.

[0021] As an implementation form, the d, the n, and the L satisfy the relationship: n*d 2 / L2=3.

[0022] As an implementation form, the t and the d satisfy the relationship: t / d=2.3.

[0023] As an implementation form, the axial height of the cylinder along the compressor housing is H, and the H and the D satisfy the relationship: D / H<4.5.

[0024] The utility model embodiment second aspect provides a kind of heating equipment, comprising the refrigerant compressor of any one embodiment described above. According to the heating equipment of the utility model embodiment, refrigerant input and heat exchange loss when pump body structure exhaust can be effectively reduced, and the energy efficiency of refrigerant compressor is improved. In addition, due to the connection of cylinder and shell, the natural frequency of pump body structure is improved, which reduces the noise of refrigerant compressor.

[0025] For better understanding and implementation, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the front view of the pump body structure of the utility model embodiment;

[0027] Figure 2 It is the plan view of the pump body structure of the utility model embodiment;

[0028] Figure 3 It is Figure 2A-A direction cross-sectional view as shown;

[0029] Figure 4 The overhead view of the pump body structure of the embodiment of the utility model discloses to remove the sound cover;

[0030] Figure 5 The exploded schematic view of the upper bearing, cylinder, lower bearing of the embodiment of the utility model discloses;

[0031] Figure 6 The simulation graph of heat exchange loss of the refrigerant compressor of the embodiment of the utility model discloses;

[0032] Figure 7 The simulation graph of the energy efficiency curve of the refrigerant compressor of the embodiment of the utility model discloses.

[0033] Mark explanation:

[0034] 10, upper sound cover;11, air outlet hole;20, upper bearing;21, upper exhaust valve seat;30, cylinder;31, cylinder body;32, flange part;33, upper exhaust gap;34, lower exhaust gap;35, oil return channel;40, lower bearing;41, lower exhaust through hole;50, lower sound cover;60, crankshaft;101, upper sound cavity;102, lower sound cavity;103, refrigerant channel;104, bolt channel. Specific implementation

[0035] To further illustrate each embodiment, the utility model provides with attached drawing.These attached drawings are part of the utility model disclosure, mainly used to illustrate the embodiment, and can cooperate with the relevant description of the specification to explain the operation principle of the embodiment.Cooperating with reference to these contents, the person skilled in the art should understand other possible implementation modes and the advantages of the utility model.

[0036] In the related art, the compressor mainly comprises a compressor shell, a motor, a pump body and a liquid accumulator. The pump body can be generally divided into a single-cylinder pump body and a double-cylinder pump body according to the number of cylinders. The single-cylinder pump body adopts an upper and lower exhaust mode. When refrigerant is discharged from the lower exhaust hole of the cylinder, it needs to be discharged into the lower muffling cover through the lower bearing and then be discharged into the upper muffling cover through the channel penetrating the lower bearing, the cylinder and the upper bearing, and finally be discharged out of the pump body. However, the position of the lower exhaust hole of the pump body is lower than the oil level of the compressor shell. When the refrigerant is discharged downward, the small channel easily causes the refrigerant to have a large resistance, so that the refrigerant has a large force. When the channel is too large, on the one hand, the distance between the channel and the inside of the cylinder is reduced, which easily causes the refrigerant to leak, and on the other hand, the distance between the channel and the outside of the cylinder is reduced, which easily causes the lubricating oil to seep in, so that the oil discharge amount of the pump body increases and the energy efficiency of the compressor decreases. In addition, the pump body of the compressor is generally connected to the compressor shell through bearings, so that the natural frequency of the pump body resonates with other components, causing a large noise.

[0037] Therefore, the refrigerant compressor and the heating and ventilation equipment provided in the embodiments of the present application can effectively reduce the refrigerant force and heat exchange loss when the pump body structure is exhausted, improve the energy efficiency of the refrigerant compressor and reduce the noise of the refrigerant compressor.

[0038] Please refer to Figures 1 to 5 The first aspect of the embodiments of the present application provides a refrigerant compressor comprising a compressor shell and a pump body structure. The pump body structure is coaxially arranged in the interior of the compressor shell. The pump body structure comprises an upper muffling cover 10, an upper bearing 20, a cylinder 30, a lower bearing 40 and a lower muffling cover 50 arranged in sequence along the axial direction. An exhaust hole 11 is formed in the upper muffling cover 10. An upper muffling cavity 101 is formed between the upper muffling cover 10 and the upper bearing 20. The outer peripheral wall of the cylinder 30 is connected to the inner peripheral wall of the compressor shell. The lower muffling cover 50 and the lower bearing 40 form a lower muffling cavity 102. A lower exhaust hole 41 is formed in the lower bearing 40 and communicates with the interior of the cylinder 30 and the lower muffling cavity 102. The upper bearing 20, the cylinder 30 and the lower bearing 40 penetrate and form a plurality of refrigerant channels 103 which communicate with the upper muffling cavity 101 and the lower muffling cavity 102 along the axial direction. The cylinder 30 comprises a cylinder body 31 and a flange portion 32 which is sleeved on the outer peripheral side of the cylinder body 31. The outer peripheral wall of the flange portion 32 is connected to the inner peripheral wall of the compressor shell.

[0039] Specifically, the inner diameter of the compressor shell is D, the exhaust volume of the pump body structure is V, and the V and the D satisfy the relationship: 4V / πD2≥1.2mm; in addition, the inner diameter of the lower exhaust through hole 41 is L, the number of the refrigerant channels 103 is n, the inner diameter of each of the refrigerant channels 103 is d, and the d, the n and the L satisfy the relationship: 2≤n*d 2 / L2≤4.

[0040] Further, in the utility model embodiment, the upper bearing 20 and the lower bearing 40 are respectively arranged at the upper and lower end faces of the cylinder body 31, the refrigerant channels 103 sequentially penetrate the upper bearing 20, the cylinder body 31 and the lower bearing 40; the inside of the cylinder body 31 is provided with a compression chamber, the radial width of the cylinder body 31 is t, and the t and the d satisfy the relationship: 2≤t / d≤2.5.

[0041] In addition, the upper end face of the cylinder body 31 of the utility model embodiment is provided with an upper exhaust gap 33 communicating with the compression chamber, the upper bearing 20 is provided with an upper exhaust valve seat 21 communicating the upper exhaust gap 33 and the upper silencing cavity 101; the lower end face of the cylinder body 31 is provided with a lower exhaust gap 34 communicating with the compression chamber, the lower bearing 40 is provided with a lower exhaust valve seat communicating with the lower exhaust gap 34, and the lower exhaust through hole 41 communicates with the lower exhaust valve seat.

[0042] As Figure 6 described, Figure 6 is a simulation graph of heat exchange loss of the refrigerant compressor of the utility model embodiment. From Figure 6 it can be seen that when n*d 2 / L2<2, the exhaust area of the refrigerant is too small, which leads to the deterioration of the exhaust resistance of the refrigerant, and the input is at a high level; when n*d 2 / L2>4, the exhaust area of the refrigerant is too large, which leads to the increase of the heat exchange amount of the high-temperature and high-pressure refrigerant, and leads to the increase of the heat exchange loss, and the input also shows an upward state. Therefore, the relationship between the inner diameter L of the lower exhaust through hole 41 and the number n of the refrigerant channels 103 and the inner diameter d thereof is designed as 2≤n*d 2 / L2≤4, which can reduce the heat exchange loss and the input of the compressor, and effectively improve the energy efficiency of the compressor.

[0043] As Figure 7 described, Figure 7 is a simulation graph of the energy efficiency curve of the refrigerant compressor of the utility model embodiment. From Figure 7It can be seen that when t / d<2, the wall thickness of the cylinder body 31 is too thin, the refrigerant leakage in the refrigerant passage 103 is deteriorated, and the energy efficiency of the compressor is reduced; when t / d>2.5, the inner diameter of the refrigerant passage 103 is too small, and under the condition that the refrigerant flow rate is unchanged, the pressure loss of the refrigerant passage 103 is increased, and the energy efficiency of the compressor is in a downward state. Therefore, the relationship between the inner diameter d of the refrigerant passage 103 and the radial width t of the cylinder body 31 is designed as 2≤t / d≤2.5, which can effectively reduce the risk of refrigerant leakage and ensure that the energy efficiency of the compressor is at a high level.

[0044] Therefore, according to the refrigerant compressor of the embodiment of the utility model, through the relationship design of the inner diameter L of the lower exhaust through hole 41 of the pump body structure and the number n and the inner diameter d of the refrigerant passage 103 as 2≤n*d 2 / L2≤4, the refrigerant discharged from the lower exhaust through hole 41 has sufficient passage space to be smoothly discharged into the upper silencing cavity 101 after entering the lower silencing cavity 102, effectively improving the exhaust resistance problem of the pump body structure, reducing the heat exchange loss of the compressor, and relatively reducing the input, thereby effectively improving the energy efficiency of the compressor. In addition, according to the refrigerant compressor of the embodiment of the utility model, the relationship between the inner diameter d of the refrigerant passage 103 and the radial width t of the cylinder body 31 is designed as 2≤t / d≤2.5, so that the refrigerant passage 103 is guaranteed to have a certain sealing distance from the inner and outer sides of the cylinder body 31. In this way, the refrigerant leakage risk in the refrigerant passage 103 can be effectively reduced, and at the same time, the refrigerant in the refrigerant passage 103 has sufficient passage space to be smoothly discharged into the upper silencing cavity 101, thereby effectively improving the efficiency of the compressor.

[0045] Specifically, the refrigerant compressor of the embodiment of the utility model further comprises a crankshaft 60 and an electric component, the crankshaft 60 is sequentially provided with the upper silencing cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40, and the lower silencing cover 50, and the crankshaft 60 is provided with a piston, and the piston is located in the compression chamber; the electric component is arranged in the interior of the compressor shell, and the electric component is drivingly connected with the crankshaft 60.

[0046] In some embodiments of the utility model, the diameter of the upper bearing 20 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the upper bearing 20 is less than the diameter of the flange part 32, the diameter of the lower bearing 40 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the lower bearing 40 is less than the diameter of the flange part 32. It can be understood that in these embodiments, the cylinder 30 is connected and fixed with the inner circumferential side of the compressor shell through the outer circumferential side of the flange part 32, and the upper bearing 20 and the lower bearing 40 are respectively covered on the upper and lower end faces of the cylinder body 31. Due to the connection of the cylinder and the shell, the natural frequency of the pump body structure is improved, and the effect of reducing noise is achieved.

[0047] It can be understood that in the embodiment, the pump body structure is a single cylinder structure, and the flange part 32 on the outer circumferential side of the cylinder 30 is fixedly connected with the compressor shell, and the double exhaust way of upper and lower exhaust is adopted for exhaust.

[0048] In some embodiments of the utility model, a plurality of refrigerant channels 103 are distributed along the circumferential direction of the cylinder body 31, and a bolt channel 104 is arranged on both sides of each refrigerant channel 103, and the bolt channel 104 penetrates the upper silencer cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40 and the lower silencer cover 50 in sequence. It can be understood that in these embodiments, the inner diameter of the bolt channel 104 is less than the inner diameter of the refrigerant channel 103, and the entire pump body structure can be locked and fixed by using a screw to pass through the bolt channel 104 and then passing through a nut, or the entire pump body structure can be locked and fixed by using a rivet to pass through the bolt channel 104.

[0049] In some embodiments of the utility model, the flange part 32 is a circular ring structure, a plurality of oil return channels 35 are provided on the flange part 32 and penetrate the flange part 32 in the axial direction, and the plurality of oil return channels 35 are distributed along the circumferential direction of the flange part 32. It can be understood that the cylinder 30 of the utility model embodiment is provided with the oil return channel 35 on the flange part 32, so that the lubricating oil falls to the lower part of the pump body structure, and the oil level in the compressor shell is ensured to be at a certain height.

[0050] In addition, in some embodiments of the utility model, the axial height of the cylinder 30 along the compressor shell is H, and the H and the D satisfy the relationship: D / H < 4.5.

[0051] The following refers to Figures 1 to 7 The following describes a specific embodiment of the refrigerant compressor according to the utility model, and it can be understood that the following embodiment is only illustrative and cannot be understood as a limitation of the utility model.

[0052] The refrigerant compressor of the embodiment comprises a compressor shell, an inner diameter of the compressor shell is D, the V and the S satisfy the relationship: 4V / πD2=1.2mm; the pump body structure is coaxially arranged in the inside of the compressor shell; the pump body structure comprises an upper sound insulation cover 10, an upper bearing 20, a cylinder 30, a lower bearing 40 and a lower sound insulation cover 50 arranged in sequence along the axial direction, the upper sound insulation cover 10 is provided with a gas outlet hole 11, the upper sound insulation cover 10 and the upper bearing 20 form an upper sound insulation cavity 101, the lower sound insulation cover 50 and the lower bearing 40 form a lower sound insulation cavity 102, the lower bearing 40 is provided with a lower exhaust hole 41 communicating the inside of the cylinder 30 and the lower sound insulation cavity 102, the inner diameter of the lower exhaust hole 41 is L, the upper bearing 20, the cylinder 30 and the lower bearing 40 are provided with a plurality of refrigerant channels 103 communicating the upper sound insulation cavity 101 and the lower sound insulation cavity 102 along the axial direction, the number of the refrigerant channels 103 is n, the inner diameter of each refrigerant channel 103 is d, the d, the n and the L satisfy the relationship: n*d 2 / L2=2.

[0053] Further, in the embodiment, the cylinder 30 comprises a cylinder body 31 and a flange part 32 sleeved on the outer circumferential side of the cylinder body 31, the outer circumferential wall of the flange part 32 is connected with the inner circumferential wall of the compressor shell; the upper bearing 20 and the lower bearing 40 are arranged on the upper and lower end faces of the cylinder body 31 respectively, the refrigerant channels 103 penetrate the upper bearing 20, the cylinder body 31 and the lower bearing 40 in sequence; the inside of the cylinder body 31 is provided with a compression chamber, the radial width of the cylinder body 31 is t, the t and the d satisfy the relationship: t / d=2.

[0054] Specifically, the upper end face of the cylinder body 31 of the embodiment is provided with an upper exhaust gap 33 communicating the compression chamber, the upper bearing 20 is provided with an upper exhaust valve seat 21 communicating the upper exhaust gap 33 and the upper sound insulation cavity 101; the lower end face of the cylinder body 31 is provided with a lower exhaust gap 34 communicating the compression chamber, the lower bearing 40 is provided with a lower exhaust valve seat communicating the lower exhaust gap 34, the lower exhaust hole 41 communicates with the lower exhaust valve seat. Secondly, the diameter of the upper bearing 20 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the upper bearing 20 is smaller than the diameter of the flange part 32; the diameter of the lower bearing 40 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the lower bearing 40 is smaller than the diameter of the flange part 32. In addition, the flange part 32 is a circular ring structure, a plurality of oil return channels 35 are provided through the flange part 32 along the axial direction, and the plurality of oil return channels 35 are distributed along the circumferential direction of the flange part 32.

[0055] Further, in the embodiment, several refrigerant passages 103 are distributed along the circumferential direction of the cylinder body 31, and a bolt passage 104 is arranged on both sides of each refrigerant passage 103, and the bolt passage 104 penetrates the upper muffling cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40, and the lower muffling cover 50 in sequence.

[0056] The refrigerant compressor of the embodiment further comprises a crankshaft 60 which penetrates the upper muffling cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40, and the lower muffling cover 50 in sequence, and a piston is arranged on the crankshaft 60 and located in the compression chamber; and an electric component is arranged inside the compressor housing and is drivingly connected with the crankshaft 60.

[0057] The specific embodiments of the refrigerant compressor according to the utility model will be described in detail below, and it should be understood that the following embodiments are only illustrative and cannot be understood as a limitation of the utility model. Figures 1 to 7 The specific embodiments of the refrigerant compressor according to the utility model will be described in detail below, and it should be understood that the following embodiments are only illustrative and cannot be understood as a limitation of the utility model.

[0058] The refrigerant compressor of the embodiment comprises a compressor housing and a pump body structure, the inner diameter of the compressor housing is D, the V and the S satisfy the relationship: 4V / πD2=1.2mm; the pump body structure is coaxially arranged inside the compressor housing; the pump body structure comprises an upper muffling cover 10, an upper bearing 20, a cylinder 30, a lower bearing 40, and a lower muffling cover 50 arranged in sequence along the axial direction, the upper muffling cover 10 is provided with an air outlet hole 11, an upper muffling cavity 101 is formed between the upper muffling cover 10 and the upper bearing 20, the lower muffling cover 50 and the lower bearing 40 form a lower muffling cavity 102, the lower bearing 40 is provided with a lower exhaust passage hole 41 which communicates the inside of the cylinder 30 and the lower muffling cavity 102, the inner diameter of the lower exhaust passage hole 41 is L, the upper bearing 20, the cylinder 30, and the lower bearing 40 are provided with a plurality of refrigerant passages 103 which communicate the upper muffling cavity 101 and the lower muffling cavity 102 and are arranged in sequence along the axial direction, the number of the refrigerant passages 103 is n, the inner diameter of each refrigerant passage 103 is d, the d, the n, and the L satisfy the relationship: n*d / L2=3. 2

[0059] ​Further, in the embodiment, the cylinder 30 comprises a cylinder body 31 and a flange portion 32 sleeved on the outer circumferential side of the cylinder body 31, the outer circumferential wall of the flange portion 32 is connected with the inner circumferential wall of the compressor shell; the upper bearing 20 and the lower bearing 40 are respectively arranged on the upper and lower end faces of the cylinder body 31, and the refrigerant passage 103 sequentially penetrates the upper bearing 20, the cylinder body 31 and the lower bearing 40; the inside of the cylinder body 31 is provided with a compression chamber, and the radial width of the cylinder body 31 is t, and the t and the d satisfy the relationship: t / d=2.3.

[0060] Specifically, the upper end face of the cylinder body 31 of the embodiment is provided with an upper exhaust gap 33 communicating with the compression chamber, the upper bearing 20 is provided with an upper exhaust valve seat 21 communicating with the upper exhaust gap 33 and the upper silencing cavity 101; the lower end face of the cylinder body 31 is provided with a lower exhaust gap 34 communicating with the compression chamber, the lower bearing 40 is provided with a lower exhaust valve seat communicating with the lower exhaust gap 34, and the lower exhaust through hole 41 communicates with the lower exhaust valve seat. Secondly, the diameter of the upper bearing 20 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the upper bearing 20 is less than the diameter of the flange portion 32; the diameter of the lower bearing 40 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the lower bearing 40 is less than the diameter of the flange portion 32. In addition, the flange portion 32 is a circular ring structure, a plurality of oil return channels 35 are provided in the flange portion 32 along the axial direction, and the plurality of oil return channels 35 are distributed along the circumferential direction of the flange portion 32.

[0061] In addition, in the embodiment, a plurality of refrigerant passages 103 are distributed along the circumferential direction of the cylinder body 31, and a bolt passage 104 is arranged on both sides of each refrigerant passage 103, and the bolt passage 104 sequentially penetrates the upper silencing cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40 and the lower silencing cover 50.

[0062] The refrigerant compressor of the embodiment further comprises a crankshaft 60 and an electric member, the crankshaft 60 sequentially penetrates the upper silencing cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40 and the lower silencing cover 50, and the crankshaft 60 is provided with a piston, and the piston is located in the compression chamber; the electric member is arranged in the inside of the compressor shell, and the electric member is drivingly connected with the crankshaft 60.

[0063] The following refers to Figures 1 to 7 The following refers to The following refers to

[0064] The refrigerant compressor of the embodiment comprises a compressor shell, an inner diameter of the compressor shell is D, the V and the S satisfy the relationship: 4V / πD2=1.3mm; the pump body structure is coaxially arranged in the inside of the compressor shell; the pump body structure comprises an upper silencer cover 10, an upper bearing 20, a cylinder 30, a lower bearing 40 and a lower silencer cover 50 arranged in sequence along the axial direction, the upper silencer cover 10 is provided with an air outlet hole 11, the upper silencer cover 10 and the upper bearing 20 form an upper silencer cavity 101, the lower silencer cover 50 and the lower bearing 40 form a lower silencer cavity 102, the lower bearing 40 is provided with a lower exhaust hole 41 communicating the inside of the cylinder 30 and the lower silencer cavity 102, the inner diameter of the lower exhaust hole 41 is L, the upper bearing 20, the cylinder 30 and the lower bearing 40 are provided with a plurality of refrigerant channels 103 communicating the upper silencer cavity 101 and the lower silencer cavity 102 along the axial direction, the number of the refrigerant channels 103 is n, the inner diameter of each refrigerant channel 103 is d, the d, the n and the L satisfy the relationship: n*d / L2=4. 2

[0065] Further, in the embodiment, the cylinder 30 comprises a cylinder body 31 and a flange part 32 sleeved on the outer circumferential side of the cylinder body 31, the outer circumferential wall of the flange part 32 is connected with the inner circumferential wall of the compressor shell; the upper bearing 20 and the lower bearing 40 are arranged on the upper and lower end faces of the cylinder body 31 respectively, the refrigerant channels 103 penetrate the upper bearing 20, the cylinder body 31 and the lower bearing 40 in sequence; the inside of the cylinder body 31 is provided with a compression chamber, the radial width of the cylinder body 31 is t, the t and the d satisfy the relationship: t / d=2.5.

[0066] Specifically, the upper end face of the cylinder body 31 of the embodiment is provided with an upper exhaust gap 33 communicating the compression chamber, the upper bearing 20 is provided with an upper exhaust valve seat 21 communicating the upper exhaust gap 33 and the upper silencer cavity 101; the lower end face of the cylinder body 31 is provided with a lower exhaust gap 34 communicating the compression chamber, the lower bearing 40 is provided with a lower exhaust valve seat communicating the lower exhaust gap 34, the lower exhaust hole 41 communicates with the lower exhaust valve seat. Secondly, the diameter of the upper bearing 20 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the upper bearing 20 is smaller than the diameter of the flange part 32; the diameter of the lower bearing 40 is greater than or equal to the diameter of the cylinder body 31, and the diameter of the lower bearing 40 is smaller than the diameter of the flange part 32. In addition, the flange part 32 is a circular ring structure, a plurality of oil return channels 35 are provided through the flange part 32 along the axial direction, and a plurality of oil return channels 35 are distributed along the circumferential direction of the flange part 32.​

[0067] In addition, in the embodiment, a plurality of refrigerant passages 103 are distributed along the circumferential direction of the cylinder body 31, and a bolt passage 104 is arranged on both sides of each refrigerant passage 103, and the bolt passage 104 sequentially penetrates the upper muffler cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40, and the lower muffler cover 50.

[0068] The refrigerant compressor of the embodiment further comprises a crankshaft 60 and an electric member, the crankshaft 60 sequentially penetrates the upper muffler cover 10, the upper bearing 20, the cylinder body 31, the lower bearing 40, and the lower muffler cover 50, and a piston is arranged on the crankshaft 60 and located in the compression chamber; the electric member is arranged inside the compressor housing, and the electric member is drivingly connected with the crankshaft 60.

[0069] Optionally, in the embodiment of the utility model, the compressor housing is a closed container for storing refrigeration oil, and the electric member is arranged inside the compressor housing and used for driving the pump body structure to compress refrigerant.

[0070] Among them, at least natural refrigerant or HFC type refrigerant or HFO type refrigerant is used as the refrigerant compressed by the pump body structure. In addition, the refrigeration oil is at least one of POE oil and PVE oil, or a mixture containing them.

[0071] Optionally, the natural refrigerant is at least one of R290 and CO2, or a mixture containing them; the HFC type refrigerant is at least one of R32, R410A, R134a, R404A and R407C, or a mixture containing them; and the HFO type refrigerant is at least one of R454B, R454C, R513A and R1234yf, or a mixture containing them.

[0072] The second aspect of the embodiment of the utility model provides a heating and ventilation equipment comprising the refrigerant compressor of any one of the above embodiments. The heating and ventilation equipment according to the embodiment of the utility model can effectively reduce the refrigerant input and heat exchange loss when the pump body structure exhausts, and improve the energy efficiency of the refrigerant compressor.

[0073] In the description of the utility model, it is understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0074] The above-described embodiments only express several embodiments of the utility model, which are described in detail, but cannot be understood as limiting the scope of the utility model refrigerant compressor and heating and ventilation equipment. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which belong to the protection scope of the utility model.

Claims

1. A refrigerant compressor characterized by comprising: Comprise: A compressor shell; A pump body structure; the pump body structure is coaxially arranged in the inside of the compressor shell; the pump body structure comprises an upper sound insulation cover, an upper bearing, a cylinder, a lower bearing and a lower sound insulation cover arranged in sequence along the axial direction; the upper sound insulation cover is provided with an air outlet hole; the upper sound insulation cover and the upper bearing form an upper sound insulation cavity; the lower sound insulation cover and the lower bearing form a lower sound insulation cavity; the lower bearing is provided with a lower exhaust through hole communicating the inside of the cylinder and the lower sound insulation cavity; the upper bearing, the cylinder and the lower bearing are provided with a plurality of refrigerant channels communicating the upper sound insulation cavity and the lower sound insulation cavity along the axial direction; the cylinder comprises a cylinder body and a flange portion sleeved on the outer circumferential side of the cylinder body; the outer circumferential wall of the flange portion is connected with the inner circumferential wall of the compressor shell.

2. The refrigerant compressor according to claim 1, wherein: The inner diameter of the compressor shell is D, and the displacement of the pump body structure is V; the V and the D satisfy the relationship: 4V / πD²≥1.2mm.

3. The refrigerant compressor according to claim 1, wherein: The inner diameter of the lower exhaust through hole is L, the number of the refrigerant channels is n, and the inner diameter of each refrigerant channel is d; the d, the n and the L satisfy the relationship: 2≤n*d² / L²≤4.

4. The refrigerant compressor according to claim 3, wherein: The upper bearing and the lower bearing are arranged on the upper and lower end faces of the cylinder body respectively; the refrigerant channels penetrate the upper bearing, the cylinder body and the lower bearing in sequence; the inside of the cylinder body is provided with a compression chamber; the radial width of the cylinder body is t; the t and the d satisfy the relationship: 2≤t / d≤2.

5.

5. The refrigerant compressor according to claim 4, wherein: The diameter of the upper bearing is greater than or equal to the diameter of the cylinder body, and the diameter of the upper bearing is less than the diameter of the flange portion; the diameter of the lower bearing is greater than or equal to the diameter of the cylinder body, and the diameter of the lower bearing is less than the diameter of the flange portion.

6. The refrigerant compressor according to claim 4, wherein: The plurality of refrigerant channels are distributed at intervals along the circumferential direction of the cylinder body; each refrigerant channel is provided with a bolt channel on both sides; the bolt channels penetrate the upper sound insulation cover, the upper bearing, the cylinder body, the lower bearing and the lower sound insulation cover in sequence.

7. The refrigerant compressor according to claim 4, wherein: The upper end face of the cylinder body is provided with an upper exhaust gap communicating the compression chamber; the upper bearing is provided with an upper exhaust valve seat penetrating and communicating the upper exhaust gap and the upper sound insulation cavity; the lower end face of the cylinder body is provided with a lower exhaust gap communicating the compression chamber; the lower bearing is provided with a lower exhaust valve seat communicating the lower exhaust gap; the lower exhaust through hole communicates with the lower exhaust valve seat.

8. The refrigerant compressor according to claim 4, wherein: Further comprising a crankshaft, the crankshaft sequentially penetrating the upper muff cover, the upper bearing, the cylinder body, the lower bearing, and the lower muff cover, and the crankshaft is provided with a piston.

9. The refrigerant compressor of claim 4, wherein: The flange portion is a circular ring structure, and a plurality of oil return channels are formed through the flange portion in the axial direction, and the plurality of oil return channels are distributed along the circumferential direction of the flange portion.

10. The refrigerant compressor of claim 1, wherein: The compressor housing is a closed container for storing refrigeration oil, and the compressor housing internally accommodates an electric component for driving the pump body structure to compress refrigerant.

11. The refrigerant compressor of claim 10, wherein: As the refrigerant compressed by the pump body structure, at least a natural refrigerant or an HFC-based refrigerant or an HFO-based refrigerant is used.

12. The refrigerant compressor of claim 11, wherein: The refrigerant compressor is a refrigerant compressor using one of R290, CO2 natural refrigerants; Or, the refrigerant compressor is a refrigerant compressor using one of R32, R410A, R134a, R404A, R407C HFC-based refrigerants; Or, the refrigerant compressor is a refrigerant compressor using one of R454B, R454C, R513A, R1234yf HFO-based refrigerants.

13. The refrigerant compressor of claim 10, wherein: The refrigerant compressor is a refrigerant compressor using one of POE oil, PVE oil.

14. The refrigerant compressor of claim 3, wherein: The d, the n, and the L satisfy the relationship: n*d² / L²=3.

15. The refrigerant compressor of claim 4, wherein: The t and the d satisfy the relationship: t / d=2.

3.

16. The refrigerant compressor of claim 2, wherein: The axial height of the cylinder along the compressor housing is H, and the H and the D satisfy the relationship: D / H<4.

5.

17. A heating and ventilation device, comprising the refrigerant compressor according to any one of claims 1 to 16. ​

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