Split type air energy heat pump mute inner machine

Abstract

A split type air energy heat pump mute inner machine comprises a machine shell, a heat exchanger, a fluorine return pipe, a fluorine inlet pipe, a silencing buffer device, a water supply pipe and a water return pipe, the heat exchanger is arranged in the machine shell, the fluorine return pipe, the fluorine inlet pipe, the water supply pipe and the water return pipe are respectively communicated with the heat exchanger, and the fluorine return pipe and the fluorine inlet pipe extend out of the top of the machine shell. The water supply pipe and the water return pipe extend out of a bottom plate of the machine shell. And the silencing buffer device wraps the fluorine return pipe and the fluorine inlet pipe and is fixed with a rear back plate of the shell. The noise reduction buffer device effectively reduces vibration, and noise caused by refrigerant flowing is lowered.

Description

Technical Field

[0001] This utility model relates to an air heat pump, and more particularly to an indoor unit. Background Technology

[0002] Currently, existing air source heat pump split units consist of an indoor unit and an outdoor unit connected by pipes. The indoor unit automatically adjusts according to the room temperature to ensure it remains within a comfortable range, offering more precise temperature control and more flexible installation. The main body of the indoor unit is mounted on a wall-mounted plate. During the heating process, compressed refrigerant flows into the indoor unit through a long refrigerant pipe to participate in heat exchange. The high-temperature, high-pressure refrigerant flow is extremely unstable, with large pulses. Therefore, the pipe vibration is significant, resulting in resonant low-frequency noise during unit operation, affecting the user experience. The root cause is that the refrigerant pipe connector of the indoor unit is fixed in hard contact with the sheet metal, which is too thin and lacks strength, failing to provide sound insulation and instead amplifying the noise. The vibration is transmitted to the sheet metal of the indoor unit, producing a "humming" sound. Furthermore, the large refrigerant pulses, coupled with the lack of a suitable silencer, cause noticeable noise from the refrigerant flow in the connecting pipes. Utility Model Content

[0003] The purpose of this invention is to provide a split-type air source heat pump silent indoor unit, which features reduced vibration and noise.

[0004] This utility model is implemented as follows: a split-type air source heat pump silent indoor unit, characterized in that it includes a casing, a heat exchanger, a refrigerant return pipe, a refrigerant inlet pipe, a noise reduction buffer device, a water supply pipe, and a water return pipe.

[0005] The heat exchanger is located inside the casing. The refrigerant return pipe, refrigerant inlet pipe, water supply pipe, and water return pipe are connected to the heat exchanger. The refrigerant return pipe and refrigerant inlet pipe extend from the top of the casing, while the water supply pipe and water return pipe extend from the bottom plate of the casing. A noise reduction and buffer device surrounds the refrigerant return pipe and refrigerant inlet pipe and is fixed to the rear plate of the casing.

[0006] The aforementioned split-type air-source heat pump silent indoor unit is characterized in that: the noise reduction and buffer device includes two elastic blocks, a first support plate, and a second support plate.

[0007] Two semi-tube holes are provided on one side of the elastic block;

[0008] The first frame plate is hollow and has an upper opening and a side opening, including a first clearance groove on the bottom plate and a first fixed foot plate with a side opening end;

[0009] The second frame plate is hollow and has an upper opening and a side opening, including a second clearance groove on the bottom plate, a second fixing foot plate and a fixing device at the side opening end;

[0010] Two elastic blocks are connected, and the refrigerant return pipe and refrigerant inlet pipe are respectively fitted into the half-pipe hole. One elastic block is embedded in the first base plate and the other elastic block is embedded in the second base plate. The refrigerant return pipe and refrigerant inlet pipe are opposite to the first and second clearance slots. The first and second fixed foot plates are fixed with screws. The fixing device is fixed to the back plate of the casing.

[0011] The aforementioned split-type air-source heat pump silent indoor unit is characterized in that: the fixing device is a frame-shaped fixing frame with one end open, and the longitudinal frame plate of the frame-shaped fixing frame is provided with a fixing seat plate at its end.

[0012] The horizontal frame plate of the fixed frame is fixed to the bottom plate of the second seat plate, and the fixed seat plate is fixed to the rear plate of the machine casing.

[0013] The unique feature of the split-type air source heat pump silent indoor unit is that the upper and lower parts of the heat exchanger are respectively provided with fixing plates, and the fixing plates are provided with two fixing holes.

[0014] It also includes a lateral fixing seat, bolts, rubber pads, limit sleeves, elastic buffers, flat plates, spring plates, and nuts.

[0015] The transverse fixing seat includes a hollow seat body with a rear opening and openings at both ends, and a side plate located at the rear opening end; the seat body is provided with several seat fixing holes arranged transversely.

[0016] The rubber pad has connection holes;

[0017] The elastic buffer includes a cylindrical body, a circular head, and a central hole along the axis;

[0018] The plate is fixed to the back plate of the housing. The shank of the bolt passes through the fixing hole of the seat and the head is located in the seat body. The rubber pad is placed between the seat body and the fixing plate. The head is inserted into the fixing hole. The limiting sleeve is inserted into the connecting hole and the center hole. The nut, spring, flat and cylindrical body are attached in sequence. The shank passes through the limiting sleeve, flat and spring and is screwed into the nut.

[0019] The unique feature of the split-type air source heat pump silent indoor unit is that the fixing holes are arranged horizontally, the fixing holes are elongated, and the diameter of the cylindrical body is greater than the width of the fixing holes.

[0020] The aforementioned split-type air source heat pump silent indoor unit is characterized in that: square flanges are respectively provided on the water supply pipe and the water return pipe, and the square flanges are provided with bolt holes.

[0021] The bottom plate of the housing is provided with a supply pipe hole and a return pipe hole, and the two ends of the supply pipe hole and the return pipe hole are respectively connected to the connection hole;

[0022] It also includes heat insulation panels, shock-absorbing plates, rubber pillars, limit sleeves, flat washers, and screws.

[0023] The insulation board is square in shape and includes round pipe holes and connection holes;

[0024] The buffer damping plate is square in shape and includes circular tube holes and connecting holes. The lower end of the connecting holes is provided with a recessed hole.

[0025] The rubber column includes a head and an axial hole along the axis;

[0026] The square flange of the water supply pipe or return pipe, the heat insulation plate, the buffer damping plate and the base plate of the machine casing are stacked in sequence. The rubber column is inserted into the connection hole on the base plate and the head is inserted into the recessed hole. The limiting sleeve is inserted into the heat insulation plate, the buffer damping plate and the shaft hole. The screw passes through the flat washer and the limiting sleeve and screws into the screw hole.

[0027] The special feature of the split-type air source heat pump silent indoor unit is that the rear panel of the casing is provided with hanging holes.

[0028] It also includes a wall-mounted mounting plate, rubber sleeves or rubber pads, and a back cushioning pad;

[0029] The mounting plate is equipped with hooks;

[0030] A rubber sleeve or rubber pad is provided on the hook, and the hook extends into the machine housing through the hanging hole. The hook is supported and engaged with the top of the rear panel of the hanging hole; the rear buffer pad is provided at the bottom of the rear panel.

[0031] This utility model discloses a split-type air source heat pump silent indoor unit. The noise reduction and buffer device effectively reduces vibration and lowers the noise caused by refrigerant flow. Attached Figure Description

[0032] Figure 1 This is one of the exploded perspective views of this utility model.

[0033] Figure 2 This is the second exploded perspective view of this utility model.

[0034] Figure 3 This is a perspective view of the present invention.

[0035] Figure 4 This is one of the partial exploded perspective views of this utility model.

[0036] Figure 5 This is the second partial exploded perspective view of this utility model.

[0037] Figure 6 This is the third partial exploded perspective view of this utility model.

[0038] Figure 7 This is the fourth partial exploded perspective view of this utility model.

[0039] Figure 8This is a partial sectional view of the present invention.

[0040] Figure 9 yes Figure 8 A magnified view of a portion of the image.

[0041] Figure 10 This is an exploded perspective view of the heat exchanger fixing device of this utility model.

[0042] Figure 11 This is a partial sectional view of the heat exchanger fixing device of this utility model. Detailed Implementation

[0043] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] like Figure 1 , Figure 2 As shown, a split-type air source heat pump silent indoor unit includes a casing 1, a heat exchanger 2, a refrigerant inlet pipe 31, a refrigerant return pipe 32, a noise reduction buffer device 4, a water supply pipe 51, and a water return pipe 52.

[0046] Heat exchanger 2, also known as water-side heat exchanger, has a refrigerant passage and a water passage;

[0047] The heat exchanger 2 is located inside the casing 1. The refrigerant return pipe 32, the refrigerant inlet pipe 31, the water supply pipe 51, and the water return pipe 52 are connected to the heat exchanger 2 respectively. The refrigerant return pipe 32 and the refrigerant inlet pipe 31 extend from the top of the casing 1, and the water supply pipe 51 and the water return pipe 52 extend from the bottom plate of the casing 1. The noise reduction and buffer device 4 wraps around the refrigerant return pipe 32 and the refrigerant inlet pipe 31 and is fixed to the back plate of the casing 1.

[0048] like Figure 5 , Figure 6 The noise reduction and buffer device 4 includes two elastic blocks 41, a first support plate 42, and a second support plate 43.

[0049] Two semi-tube holes (not marked in the figure) are provided on one side of the elastic block 41. The elastic block is made of rubber material and plays the role of buffering, sound insulation and noise reduction.

[0050] The first frame plate 42 is hollow and has an upper opening and a side opening, including a first clearance groove 421 on the bottom plate and a first fixed foot plate 422 with a side opening end.

[0051] The second frame plate 43 is hollow and has an upper opening and a side opening, including a second clearance groove 431 provided on the bottom plate, a second fixing foot plate 432 provided at the side opening end, and a fixing device;

[0052] Two elastic blocks 41 are connected, and the refrigerant return pipe 32 and the refrigerant inlet pipe 31 are respectively fitted into the half-pipe hole. One elastic block 41 is embedded in the first seat plate 42 and the other elastic block 41 is embedded in the second seat plate 43. The refrigerant return pipe 32 and the refrigerant inlet pipe 31 are opposite to the first clearance groove 421 and the second clearance groove 431. The first fixed foot plate 422 and the second fixed foot plate 432 are fixed with screws 76. The fixing device is fixed to the back plate of the housing 1.

[0053] As a further improvement of this utility model: the fixing device is a frame-shaped fixing frame 44 with one end open, and the longitudinal frame plate end of the frame-shaped fixing frame 44 is provided with a fixing seat plate 441.

[0054] The horizontal frame plate 442 of the fixed frame 44 is fixed to the bottom plate of the second seat plate 43, and the fixed seat plate 441 is fixed to the back plate of the housing 1.

[0055] As a further improvement to this utility model: such as Figure 1 , Figure 2 , Figure 10 As shown, the heat exchanger 2 is provided with a fixing plate 21 at the upper and lower parts respectively, and the fixing plate 21 is provided with two fixing holes 22;

[0056] It also includes a transverse fixing seat 61, a bolt 62, a rubber pad 63, a limiting sleeve 64, an elastic buffer 65, a flat plate 66, a spring plate 67, and a nut 68.

[0057] The transverse fixing seat 61 includes a hollow seat body 611 with a rear opening and openings at both ends, and a side plate 612 provided at the rear opening end; the seat body 611 is provided with a plurality of seat fixing holes 6111 arranged transversely.

[0058] Rubber pad 63 is provided with a connection hole;

[0059] The elastic buffer 65 includes a cylindrical part 651, a circular head 652, and a central hole 653 along the axis; the diameter of the cylindrical part 651 is larger than the diameter or width of the fixing hole 22.

[0060] The plate 612 is fixed to the back plate of the housing 1. The shank of the bolt 62 passes through the mounting hole 6111 and the head is located inside the mounting body 611. The rubber pad 63 is located between the mounting body 611 and the fixing plate 21. The head 652 of the elastic buffer 65 is inserted into the fixing hole 22 and fits against the rubber pad 63. The cylindrical part 651 fits against the fixing plate 21. The limiting sleeve 64 is inserted into the connecting hole of the rubber pad 63, the mounting hole 6111, and the center hole 653. The nut 68, the spring plate 67, the flat plate 66, and the cylindrical part 651 fit together in sequence. One end of the limiting sleeve 64 mates with the head of the bolt 62, and the other end mates with the flat washer 66. The shank of the bolt 62 passes through the limiting sleeve 64, the flat plate 66, and the spring plate 67 and is screwed into the nut 68. The elastic buffer 65 and the rubber pad 63 play a role in buffering and damping vibration.

[0061] As a further improvement of this utility model: the fixing holes 22 are arranged in a horizontal direction, the fixing holes 22 are elongated, and the diameter of the cylindrical body 651 is greater than the width of the fixing holes 22.

[0062] As a further improvement of this utility model: the water supply pipe 51 and the return water pipe 52 are respectively provided with square flanges 53, and the square flanges 53 are provided with screw holes 531.

[0063] The bottom plate of the housing 1 is provided with a supply pipe hole 1A and a return pipe hole 1B. The housing connection hole 1C intersects the supply pipe hole and the return pipe hole on both sides respectively. The housing connection hole 1C, the supply pipe hole 1A or the return pipe hole 1B and the housing connection hole 1C are arranged in sequence and on the same diameter line.

[0064] It also includes a heat insulation plate 71, a shock-absorbing plate 72, a rubber column 73, a limiting sleeve 74, a flat washer 75, and a screw 76.

[0065] The heat insulation plate 71 is square and includes a circular tube hole 711 in the center and a connecting hole;

[0066] The buffer damping plate 72 is square and includes a circular tube hole (not marked) and a connecting hole. The lower end of the connecting hole is provided with a recessed hole 721.

[0067] The rubber column 73 is provided with a head 731 and an axis hole 732 along the axis;

[0068] The square flange 53 of the water supply pipe 51 or the return pipe 52, the heat insulation plate 71, the buffer and vibration damping plate 72 and the base plate of the housing 1 are stacked in sequence. The rubber column 73 is inserted into the shell connection hole 1C on the base plate and the head 731 is inserted into the recessed hole 721. The limiting sleeve 74 is inserted into the connection hole of the heat insulation plate 71 and the buffer and vibration damping plate 72 and the axis hole 732. The screw 76 passes through the flat washer 75 and the limiting sleeve 74 is screwed into the screw hole 531. The two ends of the limiting sleeve 74 are respectively engaged with the square flange and the flat washer 75.

[0069] As a further improvement of this utility model: the rear panel of the housing 1 is provided with a hanging hole 1D;

[0070] It also includes a wall-mounted mounting plate 81, a rubber sleeve or rubber pad 82, and a back cushioning pad 83;

[0071] The mounting plate 81 is equipped with hooks 811;

[0072] A rubber sleeve or rubber pad 82 is provided on the hook 811, which extends into the housing 1 through the hanging hole 1D. The hook 811 is supported and engaged with the back panel at the top of the hanging hole 1D. The back cushioning pad 83 is provided on the lower part of the back panel of the housing 1. The back cushioning pad 83 is in contact with the wall.

[0073] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A split-type air source heat pump silent indoor unit, characterized in that: This includes the casing, heat exchanger, refrigerant return pipe, refrigerant inlet pipe, silencer / buffer device, water supply pipe, and water return pipe. The heat exchanger is located inside the casing. The refrigerant return pipe, refrigerant inlet pipe, water supply pipe, and water return pipe are connected to the heat exchanger. The refrigerant return pipe and refrigerant inlet pipe extend from the top of the casing, while the water supply pipe and water return pipe extend from the bottom plate of the casing. A noise reduction and buffer device surrounds the refrigerant return pipe and refrigerant inlet pipe and is fixed to the rear plate of the casing.

2. The split-type air source heat pump silent indoor unit according to claim 1, characterized in that: The noise reduction and buffer device includes two elastic blocks, a first frame plate, and a second frame plate. Two semi-tube holes are provided on one side of the elastic block; The first frame plate is hollow and has an upper opening and a side opening, including a first clearance groove on the bottom plate and a first fixed foot plate with a side opening end; The second frame plate is hollow and has an upper opening and a side opening, including a second clearance groove on the bottom plate, a second fixing foot plate and a fixing device at the side opening end; Two elastic blocks are connected, and the refrigerant return pipe and refrigerant inlet pipe are respectively fitted into the half-pipe hole. One elastic block is embedded in the first base plate and the other elastic block is embedded in the second base plate. The refrigerant return pipe and refrigerant inlet pipe are opposite to the first and second clearance slots. The first and second fixed foot plates are fixed with screws. The fixing device is fixed to the back plate of the casing.

3. A split-type air-source heat pump silent indoor unit according to claim 2, characterized in that: The fixing device is a frame-shaped fixing frame with one end open, and the longitudinal frame plate of the frame-shaped fixing frame is provided with a fixing seat plate at the end. The horizontal frame plate of the fixed frame is fixed to the bottom plate of the second seat plate, and the fixed seat plate is fixed to the rear plate of the machine casing.

4. A split-type air-source heat pump silent indoor unit according to claim 1, characterized in that: The heat exchanger is provided with a fixing plate at the upper and lower parts, and the fixing plate is provided with two fixing holes; It also includes a lateral fixing seat, bolts, rubber pads, limit sleeves, elastic buffers, flat plates, spring plates, and nuts. The transverse fixing seat includes a hollow seat body with a rear opening and openings at both ends, and a side plate located at the rear opening end; the seat body is provided with several seat fixing holes arranged transversely. The rubber pad has connection holes; The elastic buffer includes a cylindrical body, a circular head, and a central hole along the axis; The plate is fixed to the back plate of the housing. The shank of the bolt passes through the fixing hole of the seat and the head is located in the seat body. The rubber pad is placed between the seat body and the fixing plate. The head is inserted into the fixing hole. The limiting sleeve is inserted into the connecting hole, fixing hole and center hole of the rubber pad. The nut, spring, flat and cylindrical body are attached in sequence. The shank passes through the limiting sleeve, flat and spring and is screwed into the nut.

5. A split-type air-source heat pump silent indoor unit according to claim 4, characterized in that: The fixing holes are arranged horizontally and are elongated. The diameter of the cylindrical body is larger than the width of the fixing holes.

6. A split-type air-source heat pump silent indoor unit according to claim 1, characterized in that: The water supply pipe and the return pipe are each equipped with a square flange, and the square flange has bolt holes. The bottom plate of the housing is provided with a supply pipe hole and a return pipe hole, and the two sides of the supply pipe hole and the return pipe hole are respectively connected to the housing by shell connection holes. It also includes heat insulation panels, shock-absorbing plates, rubber pillars, limit sleeves, flat washers, and screws. The insulation board is square in shape and includes round pipe holes and connection holes; The buffer damping plate is square in shape and includes circular tube holes and connecting holes. The lower end of the connecting holes is provided with a recessed hole. The rubber column has a head and an axial hole along the axis; The square flange of the water supply pipe or return pipe, the heat insulation plate, the buffer vibration damping plate and the base plate of the machine casing are stacked in sequence. The rubber column is inserted into the shell connection hole on the base plate and the head is inserted into the recessed hole. The limiting sleeve is inserted into the connection hole and the axis hole of the heat insulation plate and the buffer vibration damping plate. The screw passes through the flat washer and the limiting sleeve is screwed into the screw hole.

7. A split-type air-source heat pump silent indoor unit according to claim 1, 2, 3, 4, 5 or 6, characterized in that: The rear panel of the housing is provided with a hanging hole; It also includes a wall-mounted mounting plate, rubber sleeves or rubber pads, and a back cushioning pad; The mounting plate is equipped with hooks; A rubber sleeve or rubber pad is provided on the hook, which extends into the housing through the hanging hole. The hook is supported and engaged with the rear panel at the top of the hanging hole. The rear buffer pad is provided at the bottom of the rear panel.

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