Heat pump unit and heat pump water heater

Abstract

The present invention discloses a heat pump unit and a heat pump water heater. The heat pump unit includes: a base, the base being provided with a mounting portion for hanging installation; a compressor, the compressor being mounted on the base; a heat exchanger, the heat exchanger being mounted on the base; a fan, the fan being mounted on the base and used to drive airflow through the heat exchanger for heat exchange; and a first soundproof cover, the first soundproof cover being mounted on the base and covering the compressor, the heat exchanger, and the fan. The noise generated by the compressor and the fan during operation is effectively confined to the soundproof cavity formed between the soundproof cover and the base, thereby effectively reducing the operating noise of the heat pump unit and improving the user experience.

Description

Technical Field

[0001] The present invention belongs to the technical field of household appliances, and in particular relates to a heat pump unit and a heat pump water heater. Background Art

[0002] Water heaters are a common household appliance in people's daily lives. Water heaters are generally divided into electric water heaters, gas water heaters and heat pump water heaters. Heat pump water heaters are widely used due to their high energy efficiency.

[0003] A heat pump water heater typically consists of a heat pump unit and a water tank. The heat pump unit consists of a compressor, evaporator, and fan, while the water tank typically includes a housing, an inner tank, and an evaporator. Conventional heat pump water heaters typically place the heat pump unit outdoors, which doesn't meet the installation requirements of high-rise buildings. Chinese Patent No. 201110059903.3 discloses a semi-concealed assembled air-source heat pump water heater that uses a suspended installation method. The heat pump unit is equipped with air inlets and outlets to meet the heat exchange requirements of the evaporator.

[0004] However, since the heat pump unit is placed indoors and mounted on a ceiling, the noise generated during operation will affect the user's daily life, resulting in a poor user experience. In view of this, how to design a heat pump water heater with good user experience is the technical problem to be solved by the present invention. Summary of the Invention

[0005] The present invention provides a heat pump unit and a heat pump water heater, which use a sound insulation cover to block the operating noise of the heat pump unit from being transmitted outward, so as to reduce the impact of the noise on users and improve user experience.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a heat pump unit comprising:

[0008] A base, wherein the base is provided with a mounting portion for hanging installation;

[0009] a compressor mounted on the base;

[0010] a heat exchanger, the heat exchanger being mounted on the base;

[0011] a fan, the fan being mounted on the base and configured to drive airflow through the heat exchanger for heat exchange;

[0012] A first soundproof cover is installed on the base and covers the compressor, the heat exchanger and the fan.

[0013] Furthermore, a recessed structure extending toward the base is provided on the first sound insulation cover, the compressor is located on one side of the recessed structure, and the heat exchanger and the fan are located on the other side of the recessed structure.

[0014] Furthermore, it also includes: a second sound insulation cover, the second sound insulation cover is installed on the base and located in the first sound insulation cover, and the second sound insulation cover covers the compressor.

[0015] Furthermore, a mounting bracket for mounting the compressor is provided on the base, and a vibration-damping pad is provided between the mounting bracket and the base.

[0016] Furthermore, two mounting brackets arranged side by side are provided on the base, and the mounting brackets have a fixed portion and raised portions distributed on both sides of the fixed portion, the fixed portion is fixed on the base, and the vibration damping pad is provided between the raised portion and the base; wherein the raised portion is used to install the compressor.

[0017] Furthermore, the mounting portion is a lifting ear provided on the base, and a socket is provided on the lifting ear;

[0018] The heat pump unit further includes a hanging rod, the lower end of which is inserted into the insertion hole.

[0019] Furthermore, an upper flange structure is provided on the upper portion of the lifting ear, and the insertion hole is provided on the upper flange structure.

[0020] Furthermore, an elastic vibration damping member is provided between the lower end portion of the suspension rod and the upper flange structure.

[0021] Furthermore, the elastic vibration damping member is a spring sleeved on the suspension rod; or the elastic vibration damping member is a rubber sleeve sleeved on the suspension rod.

[0022] In another aspect, the present invention also provides a heat pump water heater, comprising a water tank in which an auxiliary heat exchanger is provided, and also comprising the above-mentioned heat pump unit, wherein the compressor and heat exchanger of the heat pump unit are connected to the auxiliary heat exchanger to form a refrigerant circuit.

[0023] Compared with the existing technology, the advantages and positive effects of the present invention are as follows: by installing a soundproof cover on the base, a soundproof cavity will be formed between the soundproof cover and the base, and the soundproof cover covers the compressor, heat exchanger and fan. The noise generated by the compressor and fan during operation is effectively confined to the soundproof cavity formed between the soundproof cover and the base, thereby effectively reducing the operating noise of the heat pump unit to improve the user experience. At the same time, by setting the soundproof cover on the base, the outside air enters the soundproof cavity formed between the soundproof cover and the base, so that the air can fully contact the heat exchanger for heat exchange, and the air after heat exchange is finally output to the outside of the soundproof cover, so as to reduce the problem of air turbulence above the indoor roof causing the heat exchange efficiency of the heat exchanger to decrease, thereby improving the heat exchange efficiency of the heat exchanger and thus improving the energy efficiency of the heat pump water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 A heat pump water heater of the present invention is a heat pump unit in use state reference diagram in an embodiment;

[0026] Figure 2 This is a schematic structural diagram of a water tank in an embodiment of a heat pump water heater of the present invention;

[0027] Figure 3 This is a schematic structural diagram of a heat pump unit in an embodiment of a heat pump water heater of the present invention;

[0028] Figure 4 for Figure 3 One of the partial exploded views in ;

[0029] Figure 5 for Figure 3 Partial explosion diagram 2;

[0030] Figure 6 for Figure 3 Schematic diagram of the structure of the middle base;

[0031] Figure 7 This is a schematic structural diagram of a heat pump unit in another embodiment of a heat pump water heater according to the present invention;

[0032] Figure 8 This is a cross-sectional view of a heat pump unit in an embodiment of a heat pump water heater according to the present invention;

[0033] Figure 9This is a second cross-sectional view of a heat pump unit in an embodiment of a heat pump water heater of the present invention;

[0034] Figure 10 for Figure 9 One of the structural diagrams of the central ventilation duct;

[0035] Figure 11 for Figure 9 This is the second structural diagram of the ventilation pipe;

[0036] Figure 12 This is a third cross-sectional view of a heat pump unit in an embodiment of a heat pump water heater of the present invention;

[0037] Figure 13 An exploded view of an air guide cover in an embodiment of a heat pump water heater of the present invention;

[0038] Figure 14 This is a cross-sectional view of the assembly of the base and the air guide cover in one embodiment of the heat pump water heater of the present invention;

[0039] Figure 15 This is an assembly diagram of a heat exchanger and an electric heating component in an embodiment of a heat pump water heater of the present invention. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or component described must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Example 1, as Figure 1 and Figure 2As shown, the present invention provides a heat pump water heater, which generally includes a heat pump unit 100 and a water tank 200. The heat pump unit 100 comprises a base, a compressor, a heat exchanger, a throttling device, and a fan mounted thereon. The water tank 200 comprises an outer shell (not shown), an inner tank 201, and an auxiliary heat exchanger 202. The compressor, heat exchanger, throttling device, and auxiliary heat exchanger 202 are connected to form a refrigerant circulation path, utilizing the principles of a heat pump to heat the water in the inner tank 201. The above is the basic configuration of a conventional heat pump water heater and is not limited or elaborated upon here.

[0043] In actual installation and use, the heat pump unit 100 is fixed on the indoor roof in a hanging installation manner and is hidden above the ceiling 1000. The water tank 200 is placed in the user's home in a conventional installation manner.

[0044] In order for the heat pump unit 100 to meet the requirements of suspended and hidden installation, corresponding improvements need to be made to the layout of its internal related components, the suspension installation of the overall equipment, and the air circulation flow method, which are specifically explained as follows with reference to the accompanying drawings.

[0045] Example 2, as Figure 3 and Figure 4 As shown, in order to effectively reduce the overall height of the heat pump unit so that the heat pump unit can be hidden in the ceiling, the heat pump unit includes: a base 1, a compressor 2, a heat exchanger 3 and a fan 4. In order to meet the requirements of hanging installation, the base 1 is provided with a mounting portion 10 for hanging installation; the heat exchanger 3 is arranged on the base 1; and the fan 4 is used to drive the airflow through the heat exchanger 3 for heat exchange. Among them, in order to effectively reduce the overall height of the heat pump unit, the compressor 2 is arranged horizontally and installed on the base 1; the fan 4 and the heat exchanger 3 are located on the same side of the compressor 2.

[0046] Specifically, the compressor 2 in the heat pump unit is arranged horizontally and fixedly mounted on the base 1. This effectively reduces the height occupied by the compressor 2, thereby reducing the overall height of the heat pump unit. Furthermore, the fan 4 and the heat exchanger 3 are located on the same side of the compressor 2, so that the fan 4 primarily blows or draws air into or out of the heat exchanger 3. This reduces the overall size of the fan 4 and prevents it from increasing the height of the heat pump unit.

[0047] In some embodiments, in order to facilitate the installation of the compressor 2, as shown in FIG. Figure 6As shown, a mounting platform 11 is provided at one end of the base 1, and the compressor 2 is mounted on the mounting platform 11. Specifically, the compressor 2 is mounted and fixed horizontally on the mounting platform 11. The mounting platform 11 is located at one end of the base 1, so that the compressor 2 is arranged at a corresponding end position of the base 1. Preferably, to reduce the impact of vibration generated by the operation of the compressor 2, a mounting bracket 12 is provided on the mounting platform 11, and a vibration-damping pad 13 is also provided between the mounting bracket 12 and the mounting platform 11. The compressor 2 is mounted on the mounting bracket 12.

[0048] To achieve a better vibration reduction effect in conjunction with the vibration-damping pads 13, two mounting brackets 12 are arranged side by side on the mounting platform 11. Each mounting bracket 12 comprises a fixed portion 121 and raised portions 122 disposed on either side of the fixed portion 121. The fixed portion 121 is secured to the mounting platform 11, with the vibration-damping pads 13 disposed between the raised portions 122 and the mounting platform 11. The compressor 2 is secured to the raised portions 122. Specifically, the mounting brackets 12 are typically fabricated from sheet metal and possess a certain degree of elasticity. The compressor 2 is mounted on the raised portions 122, the bottoms of which press against the vibration-damping pads 13. This, combined with the elasticity of the mounting brackets 12, effectively reduces vibrations of the compressor 2. Furthermore, in one embodiment, to enhance the structural strength of the base 1 for mounting and securing the compressor 2, the lower surface of the mounting platform 11 is provided with a plurality of staggered reinforcing ribs 111.

[0049] In certain embodiments, in order to facilitate the installation of the heat exchanger 3 and meet the requirements of the overall height of the equipment, a water receiving pan 14 is formed at the other end of the base 1, and the heat exchanger 3 is arranged above the water receiving pan 14. Specifically, in actual use, the heat exchanger 3 is used for evaporative heat exchange, so condensed water will be generated on the surface of the heat exchanger 3, and the condensed water will flow into the water receiving pan 14 below the heat exchanger 3 under the action of gravity. The water receiving pan 14 is provided with a drain pipe 141, and is discharged to the outside using the drain pipe 141. Among them, a downwardly concave water receiving pan 14 is formed on the base 1, and the heat exchanger 3 is arranged in the water receiving pan 14. In this way, the installation height of the heat exchanger 3 on the base 1 can be more effectively reduced, so that a larger-sized heat exchanger 3 can be used to improve the heat exchange efficiency.

[0050] As a preferred embodiment, in order to effectively improve the heat exchange capacity of the heat exchanger 3 without increasing the height, the length dimension of the heat exchanger 3 is greater than the height dimension of the heat exchanger 3, so that the heat exchanger 3 is distributed along the length direction of the base 1, and the length direction of the base 1 is fully utilized to increase the heat exchange area of ​​the heat exchanger 3.

[0051] Example 3, as Figure 7As shown, since the heat pump unit is suspended from the indoor roof, to facilitate the operator's later maintenance of the electronic control components, the upper surface of the base 1 forms the upper mounting surface, and the lower surface of the base 1 forms the lower mounting surface. The compressor 2, heat exchanger 3, and fan 4 are mounted on the upper mounting surface of the base 1; the electronic control board 5 used to control the operation of the heat pump unit is mounted on the lower mounting surface of the base 1.

[0052] After the heat pump unit is suspended and installed, since the electric control board 5 is mounted on the lower mounting surface of the base 1, when the electric control board 5 needs to be repaired, it is only necessary to open the ceiling and repair the electric control board 5 under the base 1. The specific configuration of the electric control board 5 can be referred to the control circuit board in a conventional heat pump unit, and no limitation or detailed description is given here.

[0053] As a preferred embodiment, a mounting groove 15 is formed on the lower mounting surface of the base 1, and the electric control board 5 is positioned within the mounting groove 15. A cover plate (not shown) is also provided on the base 1 to cover the mounting groove 15. Specifically, the mounting groove 15 formed on the lower mounting surface of the base 1 facilitates the installation and securing of the electric control board 5, allowing the electric control board 5 to be embedded within the base 1. Furthermore, the cover plate covers the mounting groove 15, thereby protecting the electric control board.

[0054] In some embodiments, the compressor 2 can be positioned above the mounting slot 15. This facilitates wiring between the electronic control board 5 and the top compressor 2. The reinforcing ribs 111 are formed in the mounting slot 15 and support the electronic control board 5. This not only facilitates screwing the electronic control board 5 to the reinforcing ribs 111, but also supports the electronic control board 5. The reinforcing ribs 111 also help dissipate heat from the electronic control board 5, ensuring reliable operation.

[0055] Embodiment 4: Since the heat pump unit needs to be suspended and installed on the indoor roof, during the operation of the heat pump unit, the vibration generated by the compressor 2 or the fan 4 is easily transmitted to the roof wall and causes serious noise. In order to solve the above problem, Figure 3 As shown, the base 1 is suspended and installed on the indoor roof through a suspension rod 6, and the suspension rod 6 is connected to the installation portion 10; and an elastic vibration damping member 60 is also provided between the lower end of the suspension rod 6 and the installation portion 10.

[0056] Specifically, after the heat pump unit is hoisted onto the roof via the suspension rod 6, the elastic vibration damper 60 is sandwiched between the lower end of the suspension rod 6 and the mounting portion 10. Thus, during operation of the heat pump unit, the elastic vibration damper 60 absorbs most of the vibration generated by the compressor 2 or fan 4, thereby reducing or preventing the vibration from being transmitted to the roof via the suspension rod 6. This, in turn, mitigates the vibration and noise impact of the heat pump unit on the indoor building, thereby improving the user experience. The elastic vibration damper 60 can be a spring mounted on the suspension rod 6; alternatively, it can be a rubber sleeve mounted on the suspension rod 6.

[0057] The mounting portion 10 may be in the form of a hanging ear, whereby a socket (not marked) is formed on the upper portion of the mounting portion 10, and the lower end of the hanging rod 6 is inserted into the socket. Specifically, multiple mounting portions 10 may be arranged around the base 1 as required. Figure 3 In the middle, mounting portions 10 are respectively arranged at the four corners of the base 1, the lower end of the hanging rod 6 is inserted into the socket to hang the base 1, and the upper end of the hanging rod 6 is fixedly mounted on the roof.

[0058] In addition, the upper portion of the mounting portion 10 is provided with an upper flange structure (not marked), which has a socket. The upper flange structure enables the mounting portion 10 to rest against the elastic vibration damping member 60 to increase the contact area for a more stable and reliable installation.

[0059] In one embodiment, the lower portion of the suspension rod 6 is threaded with an adjustment nut 61, which is threadedly connected to the lower portion of the suspension rod 6. The adjustment nut 61 is located below the upper flange structure, and the elastic vibration damper 60 is sandwiched between the adjustment nut 61 and the upper flange structure. During actual installation, the height of the adjustment nut 61 on the suspension rod 6 is adjusted by rotating it, thereby adjusting the installation position of the base 1, thereby facilitating efficient on-site installation and adjustment by the operator.

[0060] In some embodiments, the upper portion of the suspension rod 6 may be provided with threads, and a fastening nut 62 may be threadedly connected to the upper portion of the suspension rod 6. The upper end of the suspension rod 6 may be formed into a tapered bolt, and an expansion tube 63 may be sleeved on the suspension rod 6, with the expansion tube 63 positioned above the fastening nut 62. Specifically, the upper end of the suspension rod 6, the fastening nut 62, and the expansion tube 63 constitute an expansion bolt structure, which allows the suspension rod 6 to be directly fixed to the concrete of the roof without the need for additional mounting components, simplifying the installation process and reducing installation costs.

[0061] Example 5, as Figure 4As shown, in order to reduce the adverse effects of the noise generated by the operation of the compressor 2 and the fan 4 on the user. A cover 7 is also provided on the base 1, and the cover 7 is installed on the base 1 and covers the compressor 2, the heat exchanger 3 and the fan 4. Specifically, an installation cavity is formed between the cover 7 and the base 1, and the compressor 2, the heat exchanger 3 and the fan 4 are all located in a relatively closed installation cavity. In this way, the noise generated during the operation of the compressor 2 and the fan 4 is effectively restricted from being transmitted outward by the cover 7, so as to play a role in reducing the operating noise. Preferably, the cover 7 adopts a cover with a sound insulation function. For example, sound insulation cotton can be configured in the cover 7 to play a better sound insulation role.

[0062] As a preferred embodiment, since the noise generated during the operation of the compressor 2 is greater, an auxiliary soundproof cover 21 is further provided in the installation cavity to cover the compressor 2. Specifically, the auxiliary soundproof cover 21 is enclosed in the housing 7. The noise generated by the compressor 2 is first soundproofed by the auxiliary soundproof cover 21 and then further soundproofed by the housing 7, thereby minimizing the impact of the noise on the user.

[0063] In certain embodiments, a recessed structure 71 extending toward the base 1 is provided on the housing 7. The compressor 2 is located on one side of the recessed structure 71, and the heat exchanger 3 and fan 4 are located on the other side of the recessed structure 71. Specifically, the recessed structure 71 allows the housing 7 to enclose a larger area of ​​the auxiliary soundproof cover 21, which is more conducive to achieving the effect of sound insulation and noise reduction. Furthermore, because the recessed structure 71 can separate the compressor 2 from the heat exchanger 3 and fan 4, the airflow generated by the fan 4 can more effectively exchange heat with the heat exchanger 3, reducing the amount of airflow flowing to the end of the base 1 where the compressor 2 is mounted, thereby improving the heat exchange efficiency of the airflow.

[0064] Example 6, based on the above technical solution, optionally, since the heat pump unit is suspended on the roof, in order to ensure that the heat exchanger 3 can efficiently exchange heat, the air source used for heat exchange in the heat exchanger 3 can use indoor air or outdoor air, as explained below in conjunction with the accompanying drawings.

[0065] 1. When indoor air is used as the air source for heat exchange in heat exchanger 3, Figure 8As shown, the base 1 is provided with an air inlet 1001 and an air outlet 1002. The fan 4 is used to drive the air into the installation cavity through the air inlet 1001 and output from the air outlet 1002 after heat exchange through the heat exchanger 3. In actual use, after the heat pump unit is hung and installed, the air inlet 1001 and the air outlet 1002 are arranged on the base 1, so that they can directly exchange air with the indoor air. Take the installation of a heat pump unit in a bathroom as an example, wherein the ceiling of the bathroom is not installed with ceiling panels below the air inlet 1001 and the air outlet 1002, so as to expose the air inlet 1001 and the air outlet 1002. The exposed air inlet 1001 and air outlet 1002 can directly exchange air with the bathroom. Specifically, under the action of the fan 4, the air in the bathroom enters the installation cavity formed by the heat pump unit through the air inlet 1001, and after the air is heated by the heat exchanger 3, it is output to the bathroom through the air outlet 1002. Figure 8 As shown by the dotted arrow in .

[0066] In certain embodiments, the air inlet 1001 and the air outlet 1002 are disposed on the lower surface of the base 1, with the air inlet 1001 located on the air inlet side of the heat exchanger 3, and the air outlet 1002 located on the air outlet side of the heat exchanger 3. Placing the air inlet 1001 and the air outlet 1002 directly on the lower surface of the base facilitates smooth air circulation between the installation cavity and the bathroom. To minimize airflow interference between the air inlet 1001 and the air outlet 1002, a recessed water tray 14 is formed on the base 1 and disposed between the air inlet 1001 and the air outlet 1002, thereby separating the air inlet 1001 and the air outlet 1002.

[0067] As a preferred embodiment, in order to improve the heat exchange efficiency of the heat exchanger 3, the heat pump unit further includes an air guide hood 8, which is arranged at the other end of the base 1. The air guide hood 8 covers the air outlet side of the heat exchanger 3 and is used to guide the airflow after heat exchange by the heat exchanger 3 to be output outward. Specifically, under the action of the fan 4, the outside air enters the installation cavity and exchanges heat with the heat exchanger 3. The airflow after heat exchange enters the air guide hood 8 to output the heat exchanged air outward through the air guide hood 8. The air guide hood 8 is arranged on the air outlet side of the heat exchanger 3. The airflow after heat exchange can be better guided to be output to the outside of the installation cavity through the air guide hood 8, thereby avoiding the phenomenon that the airflow after heat exchange continues to remain in the installation cavity and repeatedly exchanges heat with the heat exchanger 3. In this way, the heat exchange efficiency of the heat exchanger 3 can be more efficiently improved.

[0068] The air guide hood 8 is set on the base 1 and located in the installation cavity. The air guide hood 8 covers the air outlet side of the heat exchanger 3 so that an air outlet cavity is formed between the air guide hood 8 and the heat exchanger 3; the air outlet 1002 is connected to the air outlet cavity, and the air inlet 1001 is connected to the installation cavity.

[0069] 2. When outdoor air is used as the air source for heat exchange in heat exchanger 3, Figure 9 As shown, the heat pump unit also includes an air inlet channel 91 and an air outlet channel 92. The air inlet channel 91 is connected to the installation cavity, and the air outlet channel 92 is connected to the air outlet cavity. Specifically, during actual installation, the air inlet channel 91 and the air outlet channel 92 are respectively connected to the outdoor side. The outdoor air enters the installation cavity through the air inlet channel 91, and after the air exchanges heat with the heat exchanger 3, it is output to the outside through the air outlet channel 92. For specific air flow paths, refer to Figure 9 Similarly, since the heat-exchanged air can be smoothly output to the outside through the air outlet duct 92 without being accumulated in the installation cavity, the heat-exchanged airflow is prevented from remaining in the installation cavity and repeatedly exchanging heat with the heat exchanger 3. In this way, the heat exchange efficiency of the heat exchanger 3 can be more effectively improved.

[0070] As a preferred embodiment, the base 1 is also provided with an air guide hood 8 to form an air outlet cavity through the cover 7 and the heat exchanger 3. The functions of the air guide hood 8 are described above using indoor air as the air source and will not be elaborated here.

[0071] In some embodiments, to facilitate assembly, such as Figure 4 and Figure 9 As shown, the housing 7 is provided with a mounting opening 72, which is connected to a ventilation duct 9. The ventilation duct 9 is formed with an air inlet channel 91 and an air outlet channel 92. The air inlet channel 91 connects to the mounting cavity, and the air outlet channel 92 connects to the outlet cavity. The ventilation duct 9 is used to connect to the outside, introducing outdoor air into the mounting cavity and outputting the heat-exchanged air to the outside. The integration of the air inlet channel 91 and the air outlet channel 92 in the ventilation duct 9 facilitates quick assembly by on-site operators.

[0072] The ventilation pipe 9 is provided with a partition 93, which divides the ventilation pipe 9 into an air inlet channel 91 and an air outlet channel 92. Figure 10 As shown, the partition 93 is provided with an extension plate 931 extending to the outside of the ventilation pipe 9. The extension plate 931 can be used to isolate the inlet and outlet air at the outer end area of ​​the ventilation pipe 9 to reduce the interference between the inlet and outlet air outside the heat pump unit. Preferably, the extension plate 931 is bent and extended toward the side of the air outlet channel 92. In this way, the heat-exchanged air output from the air outlet channel 92 can be guided away from the air inlet channel 91 by the bent extension plate 931. Alternatively, as Figure 11 As shown, the outer port of the air inlet channel 91 and the outer port of the air outlet channel 92 are arranged to be separated from each other, so that the interference between the air inlet and outlet on the outside can be reduced or avoided.

[0073] In some embodiments, in order to ensure that the air outlet channel 92 can be reliably connected to the air outlet cavity, an auxiliary air outlet 1003 is provided on the base 1, and the auxiliary air outlet 1003 is connected to the air outlet cavity; the air outlet channel 92 is located below the air inlet channel 91, and the air outlet channel 92 is connected to the auxiliary air outlet 1003, and the partition 93 abuts against the side of the base 1. Specifically, the auxiliary air outlet 1003 is arranged on the side wall of the base 1 to connect the air outlet channel 92 and the air outlet cavity to each other through the auxiliary air outlet 1003. At the same time, since the partition 93 abuts against the side of the base 1, it is possible to prevent the airflow output from the auxiliary air outlet 1003 from leaking to the air inlet channel 91.

[0074] In some embodiments, the surface of the air guide cover 8 opposite to the air inlet channel 91 can also be set as an arc-shaped air guide surface 80, and the air guide surface 80 extends upward along the air outlet direction of the air inlet channel 91 to the upper edge of the heat exchanger 3. In this way, the air introduced from the air inlet channel 91 can be guided through the air guide surface 80 to pass over the heat exchanger 3, so that the air entering the installation cavity can smoothly pass through the heat exchanger 3 from the air inlet side of the heat exchanger 3 for heat exchange, so as to reduce the wind speed and improve the air circulation efficiency, thereby improving the heat exchange efficiency.

[0075] 3. When indoor or outdoor air is used as the air source for heat exchange in heat exchanger 3 as needed, such as Figure 12 As shown, the base 1 is provided with vents (not labeled) at its bottom for air intake or exhaust to ensure indoor air circulation. Furthermore, a ventilation duct 9 is required to exchange heat with outdoor air. Furthermore, to switch between different air sources for heat exchange as needed, the heat pump unit also includes a switching assembly 16, which selectively switches the vents or ventilation duct 9 to communicate with the installation cavity.

[0076] In actual use, the switching assembly 16 is used to switch the vent or ventilation pipe 9 to communicate with the installation cavity, thereby switching between indoor and outdoor air sources as needed. The vent typically includes an air inlet 1001 and an air outlet 1002 arranged at the bottom of the base 1, and the ventilation pipe 9 can be configured with two, one for air intake and the other for air outlet. For ease of assembly, a partition 93 can also be used to separate the air inlet channel 91 and the air outlet channel 92 in a single ventilation pipe 9.

[0077] Among them, there are many forms of entities expressing the switching component 16. For example, the switching component 16 can be a damper respectively arranged in the air inlet 1001, the air outlet 1002, and the ventilation pipe 9. By controlling the damper switch, the function of switching to use indoor or outdoor air sources can be realized.

[0078] As a preferred embodiment, an air inlet channel 91 and an air outlet channel 92 are formed in the ventilation duct 9, and the ventilation duct 9 is located on the air outlet side of the heat exchanger 3. The switching assembly 16 includes: a first baffle 161 and a second baffle 162. The first baffle 161 is rotatably mounted on the base 1 and is used to selectively block the air outlet 1002 or the inlet of the air outlet channel 92; the second baffle 162 is rotatably mounted on the base 1 and is used to open and close the air inlet 1001. Specifically, the first baffle 161 can be rotated on the base 1 to switch between blocking the air outlet 1002 or the inlet of the air outlet channel 92, thereby controlling the air after heat exchange to be output to the outside of the installation cavity through the air outlet 1002 or the air outlet channel 92.

[0079] As for the air entering the installation cavity, it is only necessary to control the second baffle 162 to open and close the air inlet 1001 to meet the requirements of switching the air source. Specifically, since the ventilation pipe 9 is far away from the air inlet side of the heat exchanger 3, and the air inlet 1001 is located on the air inlet side of the heat exchanger 3. When it is necessary to switch to using indoor air as the air source, the second baffle 162 is rotated to open the air inlet 1001. Under the action of the fan 4, since the air inlet 1001 is adjacent to the heat exchanger 3, the indoor air can be quickly sucked into the installation cavity and heat exchanged through the heat exchanger 3. When it is necessary to use outdoor air as the air source, the second baffle 162 is rotated to close the air inlet 1001. At this time, the fan 4 is started and can suck outdoor air into the installation cavity through the air inlet channel 91.

[0080] By configuring the first baffle 161 and the second baffle 162, a simple structure can be used to conveniently and reliably switch the air source. On the one hand, it effectively simplifies the structural form of the switching component 16, and on the other hand, it is more conducive to simplifying the control process, and the operation of the heat pump unit is more reliable.

[0081] In addition, in order to drive the first baffle 161 and the second baffle 162 to rotate, a driving motor 163 can be configured for the first baffle 161 and the second baffle 162 to rotate the power.

[0082] Embodiment 7, based on the above technical solution, is optional, and as for the installation position of the fan 4, the fan 4 can be arranged on the air inlet side or the air outlet side of the heat exchanger 3 as needed. The specific type of the fan 4 is described below with reference to the accompanying drawings.

[0083] In certain embodiments, as Figure 4As shown, fan 4 can be a crossflow fan, with its crossflow impeller positioned within the air outlet cavity. To meet the installation requirements of a crossflow fan, corresponding improvements have been made to the air guide 8 provided on base 1. Specifically, axial holes (not labeled) are provided at both ends of air guide 8, into which the rotating shaft of the crossflow impeller is rotatably disposed. A crossflow motor (not labeled) is also provided at one end of air guide 8, connected to the rotating shaft of the crossflow impeller.

[0084] In actual use, since the heat pump unit is suspended on the indoor roof, when the fan 4 fails and needs to be repaired, in order to reduce the difficulty of maintenance, Figure 13 As shown, the wind guide cover 8 adopts a split structure, namely, it includes: a first cover body 81 and a second cover body 82, the two ends of the first cover body 81 are respectively provided with a first semicircular notch 810, and the two ends of the second cover body 82 are respectively provided with a second semicircular notch 820; wherein, the first semicircular notch 810 and the second semicircular notch 820 located at the same end are docked together to form an axial hole. During the factory assembly stage, the crossflow impeller is set between the first cover body 81 and the second cover body 82, and then the first cover body 81 and the second cover body 82 are assembled together to complete the assembly of the fan 4. In the later maintenance, it is only necessary to disassemble the first cover body 81 and the second cover body 82 to take out the crossflow impeller for maintenance and replacement.

[0085] The first housing 81 includes two first end plates 811 and an air guide plate 812. The edges of the first end plates 811 are provided with first semicircular notches 810. The air guide plate 812 is an arc-shaped plate structure and is disposed between the two first end plates 811. The second housing 82 includes two second end plates 821 and a connector 822. The edges of the first end plates 811 are provided with second semicircular notches 820. The connector 822 is disposed between the two second end plates 821. The first end plate 811 and the second end plate 821, located at the same end, are connected together. Furthermore, the second end plate 821 abuts against the end of the heat exchanger 3, and the air guide plate 812 abuts against the upper edge of the heat exchanger 3. Specifically, the outer surface of the air guide plate 812 forms a corresponding air guide surface 80 to guide air from the outside to flow into the heat exchanger 3.

[0086] In order to facilitate the operator to quickly assemble the first cover body 81 and the second cover body 82 together, the edge of the first end plate 811 is provided with a positioning plate 8111 extending outward, and the edge of the second end plate 821 is provided with a positioning slot 8121. The positioning plate 8111 is inserted into the positioning slot 8121, so that the first cover body 81 and the second cover body 82 can be pre-installed and positioned by cooperating with the positioning plate 8111 and the positioning slot 8121.

[0087] At the same time, the edge of the first end plate 811 is provided with a positioning protrusion 8112, and the edge of the first end plate 811 is provided with a positioning notch 8212, and the positioning protrusion 8112 is set in the positioning notch 8212. The positioning protrusion 8112 is located below the positioning plate 8111 and is distributed on both sides of the first semicircular notch 810. During assembly, the second cover body 82 is hung on the first cover body 81 through the positioning slot 8121 and the positioning plate 8111. Then, the lower part is positioned by the positioning protrusion 8112 and the positioning notch 8212. Finally, the first cover body 81 and the second cover body 82 are connected and fixed by screws. Only one screw is required on each side between the first cover body 81 and the second cover body 82 to complete the assembly, thereby improving assembly efficiency.

[0088] More importantly, the positioning slot 8121 cooperates with the positioning plate 8111 to provide structural limitation on the upper part of the shaft hole, and cooperates with the positioning protrusion 8112 and the positioning notch 8212 at the bottom for bottom support, ensuring that the first semicircular notch 810 and the second semicircular notch 820 can install the fan 4 more reliably.

[0089] In certain embodiments, as Figure 14 As shown, the connecting member 822 can be a connecting plate, which is attached to the upper edge of the water receiving tray 14. The connecting plate cooperates with the edge of the water receiving tray 14 to enhance the air tightness of the air outlet cavity. Preferably, the cross section of the connecting plate is an inverted U-shaped structure to effectively increase the contact area between the connecting plate and the upper edge of the water receiving tray 14.

[0090] In other embodiments, such as Figure 5 As shown, the fan 4 can be an axial flow fan. In the case of an axial flow fan, to ensure that the fan 4 can generate sufficient air volume for heat exchange with the heat exchanger 3, multiple axial flow fans can be arranged in sequence along the length of the heat exchanger 3. This not only meets the air volume requirements, but also meets the requirements of height design. Preferably, the axial flow fan is close to the air inlet side of the heat exchanger 3.

[0091] Example 7: Based on the above technical solution, the heat pump unit provided by the present invention can optionally be equipped with additional components to expand its functions. For example, if the heat pump unit is installed in a bathroom, the function of a bathroom heater can be integrated into the heat pump unit. Figure 15 As shown, the heat pump unit also includes an electric heating component 31 for heating the airflow toward the air outlet 1002. Correspondingly, the air outlet 1002 is arranged on the lower surface of the base 1 to discharge air into the room. Specifically, when the user is bathing, the compressor 2 stops running, and the electric heating component 31 and the fan 4 are powered on to allow the heated air to enter the room through the air outlet 1002, thereby achieving the function of heating the bathroom heater.

[0092] The air outlet 1002 is located on the outlet side of the heat exchanger 3, and the electric heating element 31 is also arranged on the outlet side of the heat exchanger 3 and above the air outlet 1002. In this way, the air is first heated by the electric heating element 31 before being output from the lower air outlet 1002. Furthermore, if the air guide 8 is configured, the electric heating element 31 is preferably placed in the air outlet cavity to utilize the relatively enclosed space of the air outlet cavity to efficiently heat the air and improve heating efficiency.

[0093] In certain embodiments, to facilitate assembly, the electric heating component 31 can be mounted on the heat exchanger 3. Accordingly, a mounting base 32 is provided on the heat exchanger 3, and the electric heating component 31 is mounted on the mounting base 32. The mounting base 32 can be fixed to the tube sheet of the heat exchanger 3 by screws, so that the electric heating component 31 can be conveniently and reliably mounted and fixed via the mounting base 32. To accurately control the heating temperature, a thermostat 33 for detecting the heating temperature of the electric heating component 31 is also provided on the mounting base 32. The thermostat 33 can detect the heating temperature of the electric heating component 31.

[0094] Regarding the physical form of the electric heating component 31, the electric heating component 31 may include multiple electric heating plates, with a heating zone formed between two adjacent electric heating plates. Alternatively, the electric heating component 31 is an electric heating tube.

[0095] In some embodiments, in order to further enrich the functionality, a lighting lamp (not shown) is further provided on the lower surface of the base 1. The lighting lamp can be arranged on the lower surface of the base 1 and located below the water tray 14 to meet the requirements of indoor lighting.

[0096] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. A heat pump unit, characterized in that: include: A base, wherein the base is provided with a mounting portion for hanging installation; a compressor mounted on the base; a heat exchanger, the heat exchanger being mounted on the base; a fan, the fan being mounted on the base and configured to drive airflow through the heat exchanger for heat exchange; a first soundproof cover, which is mounted on the base and covers the compressor, the heat exchanger, and the fan; The first sound insulation cover is provided with a recessed structure extending toward the base, the compressor is located on one side of the recessed structure, and the heat exchanger and the fan are located on the other side of the recessed structure; The base is also provided with a cover shell, which is installed on the base and covers the compressor, heat exchanger and fan, and an installation cavity is formed between the cover shell and the base; the air guide hood is provided on the base and is located in the installation cavity, and the air guide hood covers the air outlet side of the heat exchanger so that an air outlet cavity is formed between the air guide hood and the heat exchanger; the air outlet is connected to the air outlet cavity, and the air inlet is connected to the installation cavity; a mounting port is provided on the cover shell, and the mounting port is connected to a ventilation duct, and an air inlet channel and an air outlet channel are formed in the ventilation duct, the air inlet channel is connected to the installation cavity, and the air outlet channel is connected to the air outlet cavity; the surface of the air guide hood opposite to the air inlet channel is provided with an arc-shaped air guide surface, and the air guide surface is inclined upward along the air outlet direction of the air inlet channel and extends to the upper edge of the heat exchanger.

2. The heat pump unit according to claim 1, characterized in that: Also includes: A second soundproof cover is installed on the base and located in the first soundproof cover, and the second soundproof cover covers the compressor.

3. The heat pump unit according to claim 1, characterized in that: A mounting bracket for mounting a compressor is provided on the base, and a vibration-damping pad is provided between the mounting bracket and the base.

4. The heat pump unit according to claim 3, characterized in that: Two mounting brackets arranged side by side are provided on the base, and the mounting brackets have a fixed portion and raised portions distributed on both sides of the fixed portion. The fixed portion is fixed on the base, and the vibration damping pad is provided between the raised portion and the base; wherein the raised portion is used to install the compressor.

5. The heat pump unit according to claim 1, characterized in that: The mounting portion is a lifting ear provided on the base, and a socket is provided on the lifting ear; The heat pump unit further includes a hanging rod, the lower end of which is inserted into the insertion hole.

6. The heat pump unit according to claim 5, characterized in that: An upper flange structure is provided on the upper portion of the lifting ear, and the insertion hole is provided on the upper flange structure.

7. The heat pump unit according to claim 6, characterized in that: An elastic vibration damping member is further provided between the lower end portion of the suspension rod and the upper flange structure.

8. The heat pump unit according to claim 7, characterized in that: The elastic vibration damping member is a spring sleeved on the suspension rod; or the elastic vibration damping member is a rubber sleeve sleeved on the suspension rod.

9. A heat pump water heater comprising a water tank, wherein an auxiliary heat exchanger is provided in the water tank, characterized in that: It also includes the heat pump unit according to any one of claims 1 to 8, wherein the compressor and heat exchanger of the heat pump unit are connected to the auxiliary heat exchanger to form a refrigerant circuit.

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