Heat pump unit

Abstract

The utility model belongs to the technical field of heat pump equipment, and particularly relates to a heat pump unit which comprises a shell, a first air inlet and a first air outlet which communicate with a mounting cavity are formed in the shell, and the first air outlet is used for communicating with the air inlet side of a heat exchanger; the support is located between the first air inlet and the first air outlet, a connecting opening for communicating the first air inlet with the first air outlet is formed in the support, and the peripheral side of the support is correspondingly connected with the inner wall of the mounting cavity; and the fan is located in the mounting cavity and fixed to the support, and the fan is used for driving air to enter the mounting cavity through the first air inlet and enter the air inlet side of the heat exchanger through the first air outlet, so that the operation noise of the heat pump unit is effectively reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat pump equipment, and particularly relates to a heat pump unit. BACKGROUND

[0002] The existing outdoor unit of the heat pump unit is usually provided with a vertical support in the unit, the support is connected with at least one of the top and the bottom of the unit, and the motor of the fan is fixed on the support.

[0003] When the motor operates, large vibration is generated, and the slender support is prone to shaking during the operation of the motor, thereby increasing the noise of the heat pump unit during operation. SUMMARY

[0004] The application provides a heat pump unit to reduce the operation noise of the heat pump unit.

[0005] In a first aspect, the application provides a heat pump unit, comprising:

[0006] A shell is provided with a mounting cavity in the shell, the shell is provided with a first air inlet and a first air outlet which are in communication with the mounting cavity, and the first air outlet is used for communicating with the air inlet side of the heat exchanger;

[0007] A support is located between the first air inlet and the first air outlet, the support is provided with a connecting port for guiding the first air inlet and the first air outlet, and the peripheral side of the support is connected with the inner wall of the mounting cavity;

[0008] A fan is located in the mounting cavity and is fixed on the support, and the fan is used for driving the gas to enter the mounting cavity through the first air inlet and to enter the air inlet side of the heat exchanger through the first air outlet.

[0009] In a possible design, a plastic air guide is further included, the air guide is provided with an air duct, the air guide is located between the support and the first air inlet, and the air duct is in communication with the first air inlet and the connecting port.

[0010] In a possible design, the air guide is connected with the support, and the air guide is further connected with the shell.

[0011] In a possible design, the air guide is provided with a first flange and a second flange at two ends respectively, the first flange is used for connecting with the support, and the second flange is used for connecting with the side of the shell which is away from the heat exchanger.

[0012] In a possible design, the first flange is clamped with the bracket, and the second flange is bolted with the shell.

[0013] In a possible design, the air duct comprises a cylindrical flat section and an air inlet section in communication with the flat section, the air inlet section is located between the flat section and the first air inlet, and the inner diameter of the air inlet section gradually decreases from the first air inlet to the flat section.

[0014] In a possible design, a circular arc is arranged between the flat section and the air inlet section.

[0015] In a possible design, an air outlet section is arranged at one end of the flat section away from the air inlet section, and the inner diameter of the air outlet section gradually increases from the flat section to the connecting port.

[0016] In a possible design, the length of the flat section is greater than or equal to 80 mm, and the length of the air duct is greater than or equal to 140 mm.

[0017] In a possible design, the fan comprises a motor and a fan blade, the motor is fixed on the bracket and in transmission connection with the fan blade to drive the fan blade to rotate, the fan blade at least partially extends into the air duct, and the length of the fan blade extending into the air duct is less than or equal to two-thirds of the height of the fan blade.

[0018] The heat pump unit provided in the application comprises a shell, a bracket and a fan, the bracket is located between the first air inlet and the first air outlet of the shell, a connecting port in communication with the first air outlet and the first air inlet is arranged on the bracket, and the peripheral side of the bracket is connected with the inner wall of the mounting cavity, and the fan is installed on the bracket. When the fan operates, the gas can enter the mounting cavity through the first air inlet, pass through the connecting port, enter the air inlet side of the heat exchanger through the first air outlet, and exchange heat with the refrigerant in the heat exchanger. During the operation of the fan, the peripheral side of the bracket is stably connected with the inner wall of the mounting cavity, compared with the traditional bracket installation mode, the rigidity of the bracket can be effectively improved, so that the bracket does not shake with the vibration of the motor of the fan, the phenomenon of resonance between the bracket and the motor is avoided, and the operating noise of the heat pump unit is effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated into the specification and constituting a part of the specification show embodiments consistent with the application and, together with the specification, serve to explain the principles of the application.

[0020] Figure 1 The structure schematic diagram of the heat pump unit provided in the embodiments of the application is shown in the drawings.

[0021] Figure 2Another perspective view of the heat pump unit according to the embodiment of the present application is shown in FIG. 4.

[0022] Figure 3 A structure diagram of the air guide in the heat pump unit according to the embodiment of the present application is shown in FIG. 5.

[0023] Figure 4 A structure diagram of the air guide in the heat pump unit according to the embodiment of the present application is shown in FIG. 5. Figure 3

[0024] Figure 5 A structure diagram of the air guide in the heat pump unit according to the embodiment of the present application is shown in FIG. 5.

[0025] Reference signs:

[0026] 100 - housing

[0027] 110 - cover

[0028] 111 - first air inlet

[0029] 120 - base

[0030] 130 - middle partition

[0031] 140 - side plate

[0032] 200 - support

[0033] 300 - fan

[0034] 400 - air guide

[0035] 410 - air duct

[0036] 420 - second flange

[0037] 430 - first flange

[0038] 431 - buckle

[0039] 440 - air inlet section

[0040] 450 - flat mouth section

[0041] 460 - air outlet section

[0042] 500 - heat exchanger

[0043] The above drawings have shown the specific embodiments of the present application, which will be described in more details hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0044] ​In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0045] It should be noted that all direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, motion condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the direction indications also change accordingly.

[0046] In the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation" and the like should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements or interaction relationship between two elements, unless otherwise explicitly limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] In addition, if there is a description of "first", "second" and the like in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0048] The existing outdoor unit of the heat pump unit usually has a vertical support arranged in the unit, the support is connected with at least one of the top and the bottom of the unit, and the motor of the fan is fixed on the support.

[0049] When the motor operates, it will generate a large vibration, and the support is slender, which is easy to shake during the operation of the motor, thereby increasing the noise of the heat pump unit in operation.

[0050] To this end, the embodiment of the present application provides a heat pump unit, so that the circumferential side of the support is stably connected with the inner wall of the mounting cavity of the shell, which can effectively improve the rigidity of the support, so that the support will not shake with the vibration of the motor of the fan, and the phenomenon of resonance between the support and the motor is avoided, thereby effectively reducing the operation noise of the heat pump unit.

[0051] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can exist independently or can be combined with each other. For the same or similar concepts or processes, some embodiments may not be described again. The embodiments of the present application will be described below with reference to the drawings.

[0052] Figure 1 The structural schematic diagram of the heat pump unit provided by the embodiment of the present application is shown in the figure. Figure 2 The structural schematic diagram of the heat pump unit provided by the embodiment of the present application is shown in the figure. Figure 3 The structural schematic diagram of the air guide part in the heat pump unit provided by the embodiment of the present application is shown in the figure. Figure 4 The structural schematic diagram of the air guide part in the heat pump unit provided by the embodiment of the present application is shown in the figure. Figure 3 The structural schematic diagram of the air guide part in the heat pump unit provided by the embodiment of the present application is shown in the figure. Figure 5 The structural schematic diagram of the heat pump unit provided by the embodiment of the present application is shown in the figure.

[0053] In some embodiments of the present application, the heat pump unit generally includes a compressor, an evaporator, a condenser, a refrigerant, an expansion valve and the like.

[0054] When the heat pump unit is in use, the refrigerant absorbs the heat of the air in the evaporator, thereby evaporating into a low-temperature and low-pressure gas. The low-temperature and low-pressure gaseous refrigerant enters the compressor and is compressed into a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant enters the condenser and releases heat to condense into a liquid. The liquid refrigerant enters the expansion valve, and the temperature and pressure rapidly decrease to become a low-temperature and low-pressure liquid refrigerant, which then enters the evaporator to start a new cycle.

[0055] It can be understood that the heat pump unit can also include common components such as a control system to enable the heat pump unit to operate normally, and the present embodiment does not limit the same.

[0056] The evaporator and the condenser can be located indoors or outdoors, and the specific location is determined according to the actual use, for example, when the heat pump unit is an air conditioner, if heating, the evaporator is located indoors, and if cooling, the evaporator is located outdoors. Therefore, the present embodiment does not limit the position of the evaporator, and both can be collectively referred to as a heat exchanger 500.

[0057] In some embodiments of the present application, please refer to Figure 1 , Figure 2 andFigure 5 As shown, the heat pump unit further comprises a shell 100, a bracket 200 and a fan 300.

[0058] The shell 100 is provided with a mounting cavity, and the shell 100 is provided with a first air inlet 111 and a first air outlet in communication with the mounting cavity, the first air outlet is used for communication with the air inlet side of the heat exchanger 500, the bracket 200 is located between the first air inlet 111 and the first air outlet, and the bracket 200 is provided with a connecting port for connecting the first air inlet 111 and the first air outlet, and the peripheral side of the bracket 200 is connected with the inner wall of the mounting cavity. The fan 300 is located in the mounting cavity, which generally includes a motor and a fan blade, the motor is used to drive the fan blade to rotate, the motor is fixed on the bracket 200, and the fan 300 is used to drive the gas to enter the mounting cavity through the first air inlet 111, and then enter the air inlet side of the heat exchanger 500 through the first air outlet, so as to exchange with the refrigerant in the heat exchanger 500.

[0059] Specifically, the shell 100 generally includes a cover 110, a side plate 140, a middle partition plate 130, a bottom plate and a top cover, the side plate 140 and the middle partition plate 130 are oppositely arranged on the bottom plate and connected with the bottom plate, the cover 110 is connected with one side of the side plate 140 and the middle partition plate 130 on both sides, the bottom is connected with the bottom plate, and the top cover is connected with the side plate 140, the middle partition plate 130 and the top of the cover 110, forming a mounting cavity with an opening away from the cover 110, and the first air inlet 111 is arranged on the cover 110, the opening of the mounting cavity away from the cover 110 is the first air outlet, and the heat exchanger 500 is located at the first air outlet.

[0060] The bracket 200 is located between the first air outlet and the first air inlet 111, and the top is connected with the top cover, the two sides are connected with the side plate 140 and the middle partition plate 130, and the bottom is connected with the bottom plate 120, so that the bracket 200 can be effectively fixed.

[0061] In use, the bracket 200 is fixed stably and will not shake with the vibration of the motor of the fan 300, compared with the traditional bracket 200 which is only connected with the bottom plate or the top cover, the stability of the bracket 200 can be effectively improved, and the running noise of the heat pump unit can be reduced.

[0062] Further, the bracket 200 can be a connecting plate with a turned-up edge, and the turned-up edge of the connecting plate can be used for connecting with the side plate 140, the middle partition plate 130, the bottom plate 120 and the top cover.

[0063] At present, most of the outdoor units of the heat pump unit have only sheet metal air ducts in the cavity inside the unit, and due to the limitation of space, the fan blade of the fan 300 is close to the side plate 140, the middle partition plate 130, the cover 110 and the heat exchanger 500, which will produce a larger noise.

[0064] A common way to reduce noise is to paste cotton with sound insulation effect such as wave cotton, acrylonitrile cotton, etc. on the sheet metal of the cover 110. This scheme can absorb part of the noise generated during the operation of the fan blade, and has some effect on the reduction of the noise of the whole machine. However, the sound insulation effect of the cotton pasted on the sheet metal is not very obvious. Moreover, in rainy days, when water seeps into the machine, the cotton is easy to get wet, which reduces the sound insulation effect. Even if the cotton is wetted by water, the cotton will fall off from the sheet metal to the fan blade, hindering the operation of the fan blade.

[0065] At the same time, the cover 110 generally has a turned-up edge as an air duct, which requires a higher cover 110. The longer the turned-up edge, the better the effect on air volume and noise. The longer the turned-up edge, the higher the requirement for the mold and the material of the cover 110, which will greatly increase the cost of the mold and the material.

[0066] For this purpose, please refer to Figure 1 , Figure 3 and Figure 4 , the present embodiment is provided with a plastic air guide 400 between the support 200 and the first air inlet 111. The air guide 400 is provided with an air duct 410, which communicates the first air inlet 111 and the connecting port.

[0067] By replacing the turned-up edge on the cover 110 with a plastic air guide 400, the air guide 400 can be shaped as needed to better guide the air according to the direction of air intake and exhaust. Compared with the turned-up edge on the cover 110 as an air duct, the cost of sheet metal mold can be reduced, and the original cover 110 can be changed from a mold part to a numerical control part, which can save mold cost and thus reduce cost.

[0068] Further, the air guide 400 is connected with the support 200, and the air guide 400 is also connected with the shell 100.

[0069] The strength of the support 200 can be further improved by the air guide 400, and the probability of the support 200 shaking with the motor of the fan 300 can be reduced, thereby improving the noise reduction effect.

[0070] It can be understood that the air guide 400 can also be directly fixed on the middle partition plate 130 or the bottom plate without being connected with the cover 110 and the support 200, as long as the air guide 400 can remain stable during the operation of the heat pump unit. The present embodiment does not limit the installation position of the air guide 400.

[0071] Further, the air guide 400 is provided with a first turned-up edge 430 and a second turned-up edge 420 at two ends respectively. The first turned-up edge 430 is used to connect with the support 200, and the second turned-up edge 420 is used to connect with one side of the heat exchanger 500 of the shell 100, so as to improve the convenience of connection and increase the contact area of the connection to improve the connection strength.

[0072] In order to facilitate installation, the first flange 430 can be clamped to the bracket 200, and the second flange 420 can be connected to the shell 100 by a bolt.

[0073] Specifically, a plurality of buckles 431 can be arranged on the first flange 430 along the circumferential direction of the air duct 410, and corresponding clamping grooves can be arranged on the bracket 200. The buckles 431 can be clamped into the clamping grooves to connect the air guide 400 and the bracket 200.

[0074] A plurality of screw holes can be arranged on the second flange 420 and the shell 110. The shell 110 and the air guide 400 can be connected by screwing a bolt into the screw hole.

[0075] In some embodiments of the present application, the air duct 410 includes a cylindrical flat section 450 and an air inlet section 440 in communication with the flat section 450. The air inlet section 440 is located between the flat section 450 and the first air inlet 111, and the inner diameter of the air inlet section 440 gradually decreases along the direction from the first air inlet 111 to the flat section 450.

[0076] Specifically, the cross-sectional area of the passage inside the flat section 450 for the gas to pass through is consistent, so that the gas entering the flat section 450 can pass through stably. At the same time, the air inlet section 440 can be designed as a large-angle flange on the side of the flat section 450 facing the first air inlet 111, so that the air inlet section 440 forms a horn-like structure, thereby increasing the air inlet amount and improving the heat exchange effect.

[0077] Further, the flat section 450 and the connecting section can be connected by a large circular arc, so that there is no sharp protrusion at the connection between the two, thereby assisting in increasing the air inlet amount and reducing the air inlet resistance.

[0078] In addition, the wall of the air inlet section 440 can form an angle of 45°-60° with the X direction, i.e., the length of the projection of the air inlet section 440 in the X direction is equal to or less than the length of the projection of the air inlet section 440 in the Z direction, so as to increase the air inlet amount. Figure 4

[0079] In some embodiments of the present application, the flat section 450 is provided with an air outlet section 460 at one end away from the air inlet section 440. The air outlet section 460 gradually increases in inner diameter along the direction from the flat section 450 to the connecting port, forming a horn-like inclined angle flared section.

[0080] By designing the shape of the air outlet section 460, the air outlet area is enlarged, thereby effectively reducing the noise.

[0081] In order to make the air outlet uniform, the inner wall of the air outlet section 460 can form an angle of about 45° with the X direction. ​

[0082] Further, the length of the flat section 450 can be greater than or equal to 80 mm, and the length of the air duct 410 can be greater than or equal to 140 mm.

[0083] Specifically, the entire air duct 410 is divided into the large-angle arc-shaped air inlet section 440, the flat section 450 for stabilizing the air flow, and the horn-shaped inclined-angle air outlet section 460. The length of the flat section 450 is greater than or equal to 80 mm, and the total length of the air duct 410 is greater than or equal to 140 mm. The air volume is increased at the air inlet side, the flat section 450 stabilizes the air flow, and the inclined-angle air outlet section 460 reduces the noise, thereby effectively improving the air field and reducing the noise.

[0084] Further, the fan blades can extend at least partially into the air duct 410, and the length of the fan blades extending into the air duct 410 is less than or equal to two-thirds of the height of the fan blades, so as to better guide the air flow, reduce the vortex and air resistance, improve the efficiency of the fan 300, and also help reduce the noise generated when the fan 300 operates.

[0085] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat pump unit, characterized by The application relates to a heat exchanger, which comprises the following parts: a shell (100) provided with a mounting cavity, a first air inlet (111) and a first air outlet for communicating with the mounting cavity and the air inlet side of a heat exchanger (500); a support (200) located between the first air inlet (111) and the first air outlet, provided with a connecting port for communicating the first air inlet (111) and the first air outlet, and connected with the inner wall of the mounting cavity; a fan (300) located in the mounting cavity and fixed on the support (200), used for driving gas to enter the mounting cavity through the first air inlet (111) and enter the air inlet side of the heat exchanger (500) through the first air outlet.

2. The heat pump unit of claim 1, wherein, The application further comprises a plastic air guide (400) provided with an air duct (410), located between the support (200) and the first air inlet (111), and communicating the first air inlet (111) and the connecting port.

3. The heat pump unit of claim 2, wherein, The air guide (400) is connected with the support (200) and the shell (100).

4. The heat pump unit of claim 3, wherein, The air guide (400) is provided with a first flange (430) and a second flange (420) at two ends respectively, the first flange (430) is used for connecting with the support (200), and the second flange (420) is used for connecting with the side of the shell (100) away from the heat exchanger (500).

5. The heat pump unit of claim 4, wherein, The first flange (430) is clamped with the support (200), and the second flange (420) is bolted with the shell (100).

6. The heat pump unit of claim 2, wherein, The air duct (410) comprises a cylindrical flat section (450) and an air inlet section (440) communicating with the flat section (450), the air inlet section (440) is located between the flat section (450) and the first air inlet (111), and the inner diameter of the air inlet section (440) gradually decreases from the first air inlet (111) to the flat section (450).

7. The heat pump unit of claim 6, wherein, The flat section (450) and the air inlet section (440) are connected through a circular arc.

8. The heat pump unit of claim 6, wherein, The flat section (450) is provided with an air outlet section (460) at one end away from the air inlet section (440), and the inner diameter of the air outlet section (460) gradually increases from the flat section (450) to the connecting port.

9. The heat pump unit of claim 6, wherein, The length of the flat section (450) is greater than or equal to 80 mm, and the length of the air duct (410) is greater than or equal to 140 mm.

10. The heat pump package of any of claims 2-9, wherein, The fan (300) comprises a motor and a fan blade, the motor is fixed on the support (200) and in transmission connection with the fan blade to drive the fan blade to rotate, the fan blade at least partially extends into the air duct (410), and the length of the fan blade extending into the air duct (410) is less than or equal to two-thirds of the height of the fan blade.

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