Heat pump unit indoor unit

Abstract

The application provides a heat pump unit indoor unit, comprising: a shell, an accommodating cavity is defined in the shell; a heat exchanger is installed in the accommodating cavity, a fluid flow channel is defined in the heat exchanger, the heat exchanger is a box type structure, the heat exchanger comprises a first surface, a second surface and a circumferential surface connecting the first surface and the second surface, a pipeline connecting port is arranged on the first surface; an acoustic absorption piece is wrapped outside the heat exchanger and is used for blocking the flow sound of the fluid in the heat exchanger; the acoustic absorption piece comprises a first acoustic absorption layer, a second acoustic absorption layer and a third acoustic absorption layer; the first acoustic absorption layer covers the first surface and avoids the pipeline connecting port; the second acoustic absorption layer covers the second surface; and the third acoustic absorption layer covers the circumferential surface. By wrapping the acoustic absorption piece outside the heat exchanger, the flow sound in the operation process of the heat exchanger is absorbed and blocked, the sound absorption and noise reduction effects are realized, and the user experience is improved.

Description

Technical Field

[0001] This application relates to the field of heat pump equipment technology, and in particular to an indoor unit of a heat pump unit. Background Technology

[0002] A heat pump unit is a device that absorbs heat from a low-temperature heat source and transfers it to a high-temperature heat source to achieve cooling, heating, or hot water supply. It is commonly used in heating, cooling, and domestic hot water applications. Compared to traditional electric or gas heating methods, heat pump units offer advantages such as high energy efficiency and environmental friendliness, making them widely used in residential buildings, commercial buildings, and industrial facilities.

[0003] A heat pump unit typically consists of an indoor unit and an outdoor unit. The indoor unit usually houses components such as a heat exchanger, electrical box, expansion tank, water pipes, and refrigerant pipes. The water and refrigerant pipes connect to the heat exchanger, and during operation, water and refrigerant exchange heat in the heat exchanger, thereby heating or cooling the indoor air or water supply.

[0004] However, during the operation of the indoor unit of a heat pump unit, the flow of refrigerant in the pipes and heat exchanger generates significant flow noise, affecting the user experience. This is especially true at night or in quiet environments, causing considerable disturbance to users. Utility Model Content

[0005] To address at least one shortcoming in the relevant technology, this application provides a heat pump unit indoor unit that absorbs and blocks the flow noise during the operation of the heat exchanger by wrapping the heat exchanger with sound-absorbing components, thereby achieving sound absorption and noise reduction effects and improving the user experience.

[0006] This application provides an indoor unit for a heat pump system, comprising: The housing has a defined cavity inside; A heat exchanger is disposed in a housing cavity and a fluid flow channel is defined inside the heat exchanger. The heat exchanger has a box-type structure and includes a first surface, a second surface and a circumferential surface connecting the first surface and the second surface, which are arranged opposite to each other. A pipe connection port is provided on the first surface. A sound-absorbing component, which is wrapped around a heat exchanger, is used to block the flow noise of the fluid inside the heat exchanger. The sound-absorbing component includes a first sound-absorbing layer, a second sound-absorbing layer and a third sound-absorbing layer; the first sound-absorbing layer covers a first surface and avoids the pipe connection port; the second sound-absorbing layer covers a second surface; and the third sound-absorbing layer covers the circumferential surface.

[0007] In the above technical solution, by wrapping the heat exchanger with sound-absorbing components, the flow noise inside the heat exchanger can be absorbed and blocked during unit operation, achieving physical noise reduction and thus reducing the transmission of noise to the outside of the casing; the sound-absorbing components cover all surfaces of the heat exchanger, achieving all-round sound absorption and noise reduction effects; at the same time, the avoidance design at the pipe connection port ensures the reliability of the pipe connection and the normal operation of the heat exchanger.

[0008] In some embodiments, the housing includes a back plate that encloses the rear side of the receiving cavity; a heat exchanger mounting bracket is also provided in the receiving cavity, the heat exchanger mounting bracket includes a mounting bracket body, the mounting bracket body and the back plate enclose a mounting cavity with an opening on one side, the heat exchanger is mounted in the mounting cavity, and a first surface faces the opening of the mounting cavity.

[0009] In the above technical solution, by installing the heat exchanger in a mounting cavity with only one side opening, the enclosure structure of the mounting cavity forms a covering for the heat exchanger, which shields the propagation of sound waves and blocks some of the flow noise transmitted from the heat exchanger to the outside. Combined with the sound absorption effect of the sound-absorbing component, the transmission of flow noise to the outside of the casing can be further reduced, thereby improving the quietness effect.

[0010] In some embodiments, the heat exchanger mounting bracket further includes a connecting plate that connects the mounting bracket body and the back plate, and a first buffer element is provided between the connecting plate and the back plate, the first buffer element being made of vibration damping material.

[0011] In the above technical solution, by setting a first buffer between the connecting plate and the back plate, the vibration caused by the fluid flow in the heat exchanger can be absorbed during the operation of the unit, reducing the transmission of vibration to the back plate and the casing, thereby reducing the noise caused by structural resonance. With the covering of the sound-absorbing component, the overall quiet performance of the unit during operation can be further improved.

[0012] In some embodiments, the first and second surfaces of the heat exchanger extend in the height direction of the housing; the mounting bracket body includes a first mounting plate, a second mounting plate, a third mounting plate, and a fourth mounting plate; the first mounting plate extends in the height direction of the housing and faces the side of the second surface; the second mounting plate extends in the height direction of the housing and faces the side of the circumferential surface away from the back plate; the third mounting plate connects the top of the first mounting plate and the top of the second mounting plate and covers the top of the circumferential surface; the fourth mounting plate connects the bottom of the first mounting plate and the bottom of the second mounting plate and covers the bottom of the circumferential surface; wherein, a connecting plate is provided on the side of the third mounting plate and the fourth mounting plate near the back plate, and the third mounting plate is connected to the back plate through the connecting plate.

[0013] In the above technical solution, the main body of the mounting bracket forms a multi-faceted shield for the heat exchanger, which can effectively block the noise generated by the operation of the heat exchanger; the third mounting plate and the fourth mounting plate are connected to the back plate through the connecting plate and the buffer, which can reduce the transmission of vibration to the casing. Combined with the multi-faceted covering structure of the sound-absorbing component, vibration reduction and noise reduction are achieved, and the quiet operation performance of the unit is improved.

[0014] In some embodiments, an electrical box is further provided within the receiving cavity, the electrical box being located above the heat exchanger; the electrical box includes a lower side plate located at the bottom, the lower side plate being fixedly connected to a third mounting plate.

[0015] In the above technical solution, the top of the heat exchanger mounting bracket is connected to the bottom of the electrical box, so that the heat exchanger mounting bracket, electrical box and back plate are connected to form a whole; the heat exchanger mounting bracket not only supports and fixes the heat exchanger, but its top is also connected to the electrical box, so as to realize the stable installation of the heat exchanger, and also play a supporting and fixing role for the electrical box.

[0016] In some embodiments, the third mounting plate has an extension plate at its edge away from the back plate, the extension plate being opposite to and fixedly connected to the lower side plate, and a second buffer member is provided between the extension plate and the lower side plate, the second buffer member being made of vibration damping material.

[0017] In the above technical solution, by providing an extension plate, the contact surface between the electrical box and the heat exchanger mounting bracket is increased, providing more stable support and connection for the electrical box; at the same time, the second buffer can effectively absorb the vibration caused by the fluid flow in the heat exchanger, reduce the transmission of vibration to the back plate and the casing, and with the covering of the sound-absorbing component, the overall quiet performance of the unit during operation can be further improved.

[0018] In some embodiments, the first buffer and the second buffer are buffer sleeves, the buffer sleeves including a first sidewall and a second sidewall disposed opposite to each other and a connecting wall, the connecting wall connecting the first sidewall and the second sidewall and forming a sleeve interface on one side of the two sidewalls; wherein, a sleeve cavity is defined between the first sidewall, the second sidewall and the connecting wall; the first buffer is sleeved outside the connecting plate, and the first sidewall of the first buffer is sandwiched between the connecting plate and the back plate; the second buffer is sleeved outside the extension plate, and the first sidewall of the second buffer is sandwiched between the extension plate and the lower side plate.

[0019] In the above technical solution, a buffer sleeve is used to be fitted on the connecting plate and the extension plate. At the connection position between the heat exchanger mounting bracket and the adjacent components, the vibration of the heat exchanger is absorbed and buffered, thereby achieving the effects of vibration reduction and noise reduction, and thus improving the quiet performance of the indoor unit.

[0020] In some embodiments, a refrigerant pipeline is also provided in the receiving cavity. One end of the refrigerant pipeline is connected to the pipeline connection port of the heat exchanger, and the other end of the refrigerant pipeline extends to the bottom of the receiving cavity and is led out of the casing. The casing also includes a pipe fixing plate, which is close to the bottom of the receiving cavity. The refrigerant pipeline is fixed to the pipe fixing plate by a locking member.

[0021] In the above technical solution, the refrigerant pipeline is fixed to the pipe fixing plate by locking components, which can reliably limit and fix the pipeline, facilitate the connection operation with external pipelines, avoid shaking during installation or use, and improve the reliability of system operation.

[0022] In some embodiments, the locking member includes a locking member body and two fixing parts; the locking member body is arranged circumferentially around the refrigerant pipeline, and the locking member body includes a first end and a second end located in the circumferential direction of the refrigerant pipeline; the two fixing parts are respectively disposed at the first end and the second end of the locking member body, the two fixing parts extend toward the same side of the locking member body and are disposed opposite to each other; in the locked state of the locking member, the two fixing parts abut against and connect to the pipe fixing plate, the locking member forms a closed structure in the circumferential direction of the refrigerant pipeline, and confines the refrigerant pipeline in the locking member.

[0023] In the above technical solution, the locking component forms a closed structure around the refrigerant pipeline, which can securely confine the refrigerant pipeline within the locking component, thereby achieving reliable fixation of the refrigerant pipeline and preventing displacement or loosening of the refrigerant pipeline due to vibration or external force during unit operation. This reduces vibration noise and flow noise, while ensuring the safe operation of the refrigerant pipeline and the overall reliability of the indoor unit of the heat pump unit.

[0024] This application also provides an indoor unit for a heat pump unit, including: The housing has a defined cavity inside; A heat exchanger is located inside a housing cavity and has a fluid flow channel defined inside the heat exchanger. The heat exchanger has a box-type structure and includes a first surface, a second surface, and a circumferential surface that are arranged opposite to each other. The circumferential surface is annular and closes the space between the first surface and the second surface. A pipe connection port is provided on the first surface. A sound-absorbing component, which is wrapped around a heat exchanger, is used to block the flow noise of the fluid inside the heat exchanger. The sound-absorbing component includes a first sound-absorbing layer, a second sound-absorbing layer and a third sound-absorbing layer. The first sound-absorbing layer covers a first surface and avoids the pipe connection port. The second sound-absorbing layer covers a second surface. The third sound-absorbing layer has a ring structure and wraps around the circumferential surface.

[0025] In the above technical solution, by wrapping the heat exchanger with sound-absorbing components, the flow noise inside the heat exchanger can be absorbed and blocked during unit operation, achieving physical noise reduction and thus reducing the transmission of noise to the outside of the casing; the sound-absorbing components cover all surfaces of the heat exchanger, achieving all-round sound absorption and noise reduction effects; at the same time, the avoidance design at the pipe connection port ensures the reliability of the pipe connection and the normal operation of the heat exchanger. Attached Figure Description

[0026] Figure 1 A perspective view of the indoor unit of a heat pump unit provided in an embodiment of this application; Figure 2 This is a schematic diagram showing the opening of the cover of the indoor unit of the heat pump unit provided in an embodiment of this application; Figure 3 This is a front view of the indoor unit of the heat pump unit after the cover plate has been removed, as provided in the embodiment of this application. Figure 4 This is a perspective view of the assembly state of the back plate and the various components in the receiving cavity in the embodiments of this application; Figure 5 This is a side view of the assembly state of the back plate and the components inside the receiving cavity in an embodiment of this application; Figure 6 for Figure 5 A magnified view of part A in the middle; Figure 7 This application embodiment shows a three-dimensional heat exchanger support with a heat exchanger installed. Figure 1 ; Figure 8 for Figure 7 Exploded view of the structure shown; Figure 9 This application embodiment shows a three-dimensional heat exchanger support with a heat exchanger installed. Figure 2 ; Figure 10 for Figure 9 Exploded view of the structure shown; Figure 11 This is a right view of the heat exchanger bracket with the heat exchanger installed in an embodiment of this application; Figure 12 This is a left view of the heat exchanger bracket with the heat exchanger installed in an embodiment of this application; Figure 13 This is an exploded view of the heat exchanger support, the first buffer, and the second buffer in an embodiment of this application. Figure 14 This is a perspective view of the buffer sleeve in the embodiments of this application; Figure 15 This is an assembly drawing of the back plate, heat exchanger mounting bracket, electrical box, and electrical box bracket in the embodiments of this application; Figure 16 for Figure 15 A magnified view of part B in the middle; Figure 17 for Figure 15 Exploded view of the structure shown; Figure 18 This is an assembly drawing of the back plate, bottom plate, and nozzle fixing plate in the embodiments of this application; Figure 19 for Figure 18 Exploded view of the structure shown; Figure 20 This is a perspective view of the pipe fixing plate in the embodiment of this application; Figure 21 This is a side view of the nozzle fixing plate in an embodiment of this application; Figure 22 This is a perspective view of the base plate in an embodiment of this application; Figure 23 This is a perspective view of the locking component in an embodiment of this application; Figure 24 This is a front view of the locking component in an embodiment of this application; Figure 25 This is a top view of the locking component in an embodiment of this application.

[0027] In the picture: 100. Housing; 101. Receiving cavity; 102. Opening part; 103. Pipe port positioning part; 104. Reserved space; 110. Back plate; 111. Insertion interface; 120. Top plate; 130. Side plate; 140. Bottom plate; 141. Second sub-positioning part; 150. Pipe port fixing plate; 151. Assembly plate; 1511. Pipe fixing part; 152. Positioning plate; 1521. First sub-positioning part; 200. Cover plate; 300. Heat exchanger; 310. First surface; 311. Pipe connection port; 320. Second surface; 330. Circumferential surface; 410. Refrigerant pipe; 420. Water pipe; 510. First sound-absorbing layer; 520. Second sound-absorbing layer; 530. Third sound-absorbing layer; 600. Heat exchanger mounting plate. Mounting bracket; 601, mounting cavity; 610, mounting bracket body; 611, first mounting plate; 6111, insertion part; 612, second mounting plate; 613, third mounting plate; 6131, extension plate; 6132, limiting plate; 614, fourth mounting plate; 615, folded edge; 620, connecting plate; 710, first buffer; 720, second buffer; 730, buffer sleeve; 731, first side wall; 732, second side wall; 733, connecting wall; 734, socket; 800, electrical box; 810, box body; 811, box body back plate; 812, lower side plate; 820, box cover; 900, electrical box bracket; 1000, locking component; 1001, locking component body; 1002, fixing part. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0029] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0030] In the description of this application, it should be understood that the terms "horizontal", "vertical", "up", "down", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] In the description of this application, the “width direction” of the housing refers to the left-right direction of the housing in the installed state, the “height direction” of the housing refers to the up-down direction of the housing in the installed state, and the “thickness direction” of the housing refers to the front-back direction of the housing in the installed state; the width direction, thickness direction and height direction are orthogonal to each other.

[0032] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. The term "multiple" in this application refers to two or more.

[0034] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0035] A first aspect of this application provides an indoor unit for a heat pump unit. For example... Figures 1-3 As shown, the indoor unit of the heat pump unit includes a casing 100, which constitutes the overall appearance of the indoor unit of the heat pump unit.

[0036] A receiving cavity 101 is defined inside the housing 100, and various components for realizing the functions of the indoor unit are installed in the receiving cavity 101.

[0037] The housing 100 includes a back plate 110, which encloses the rear side of the receiving cavity 101.

[0038] In some embodiments, the indoor unit of the heat pump unit is wall-mounted. A hoisting component is provided on the side of the back panel 110 away from the receiving cavity 101. The hoisting component is used to install the indoor unit on the mounting surface, thereby realizing the hoisting of the indoor unit of the heat pump unit.

[0039] The housing 100 also includes a top plate 120, a side plate 130, and a bottom plate 140, which are used to close the top, sides, and bottom of the receiving cavity 101, respectively. The top plate 120, the side plate 130, and the bottom plate 140 define an opening 102 on the opposite side of the back plate 110.

[0040] The housing 100 also includes a cover plate 200, which is detachably mounted on the opening part 102 for opening or closing the receiving cavity 101. When it is necessary to maintain or replace the components in the receiving cavity 101, the cover plate 200 can be removed and the corresponding components can be operated.

[0041] like Figures 3-5 as well as Figures 7-10 As shown, a heat exchanger 300 is provided inside the receiving cavity 101. A fluid flow channel is defined inside the heat exchanger 300.

[0042] In some embodiments, the heat exchanger 300 is specifically a water-fluorine heat exchanger, which is provided with a water flow channel and a refrigerant flow channel to realize heat exchange between water and refrigerant.

[0043] In some embodiments, to improve the heat exchange effect, the water channel and the refrigerant channel are arranged in an up-down flow direction along the height of the casing 100, so that the heat exchange medium can fully contact and flow in the vertical direction, thereby improving the heat transfer efficiency and further improving the overall energy efficiency of the indoor unit.

[0044] In some embodiments, such as Figure 8 and Figure 10 As shown, the heat exchanger 300 has a box-type structure and includes a first surface 310, a second surface 320 disposed opposite to each other, and a circumferential surface 330 connecting the first surface 310 and the second surface 320.

[0045] A pipe connection port 311 is provided on the first surface 310. The heat exchanger 300 is connected to the pipe through the pipe connection port 311 to realize the circulation of the water system and the refrigerant system.

[0046] During unit operation, fluid flows through the flow channels within the heat exchanger 300. The fluid rubs and impacts against the channel walls, generating flow noise inside the heat exchanger 300. This flow noise is transmitted to the outside through the casing 100, causing noticeable noise interference for users and reducing the comfort of their living or office environment.

[0047] To address the aforementioned issues, the indoor unit of the heat pump unit in this application also includes a sound-absorbing component. This component surrounds the heat exchanger 300 and is used to block the flow noise of the fluid within the heat exchanger 300. The sound-absorbing component can be made of various materials with sound-absorbing properties, such as foam materials, rubber materials, or composite fiber materials, etc., and is not limited in this application.

[0048] like Figure 8 and Figure 10 As shown, the sound-absorbing component includes a first sound-absorbing layer 510, a second sound-absorbing layer 520, and a third sound-absorbing layer 530; the first sound-absorbing layer 510 covers the first surface 310 and avoids the pipe connection port 311; the second sound-absorbing layer 520 covers the second surface 320; and the third sound-absorbing layer 530 covers the circumferential surface 330.

[0049] By wrapping the heat exchanger 300 with sound-absorbing components, the flow noise generated by the fluid flow inside the heat exchanger 300 can be absorbed and blocked during unit operation, achieving physical noise reduction and thus reducing the transmission of noise to the outside of the casing 100. The sound-absorbing components cover all surfaces of the heat exchanger 300, achieving comprehensive sound absorption and noise reduction effects. Simultaneously, the components are strategically placed at the pipe connection port 311 to ensure the reliability of the pipe connections and the normal operation of the heat exchanger 300. Thus, effective noise reduction is achieved while maintaining a rational structural layout.

[0050] In some embodiments, such as Figures 3-5 As shown, a heat exchanger mounting bracket 600 is also provided within the receiving cavity 101. See further details. Figures 7-12 The heat exchanger mounting bracket 600 includes a mounting bracket body 610, which and the back plate 110 surround a mounting cavity 601 with an opening on one side. The heat exchanger 300 is installed in the mounting cavity 601, and the first surface 310 faces the opening of the mounting cavity 601.

[0051] In the above embodiment, by installing the heat exchanger 300 in the mounting cavity 601 which has an opening on only one side, the surrounding structure of the mounting cavity 601 forms a covering of the heat exchanger 300, which shields the propagation of sound waves and blocks some of the flow noise transmitted outward from the heat exchanger 300. Combined with the sound absorption effect of the sound-absorbing component, the transmission of flow noise to the outside of the casing 100 can be further reduced, thereby improving the quietness effect.

[0052] In addition, the heat exchanger mounting bracket 600 wraps around the heat exchanger 300 270°, thus fixing and protecting the heat exchanger 300. At the same time, the heat exchanger mounting bracket 600 with the above structure increases the overall rigidity of the internal frame structure, improving the structural strength and assembly reliability of the unit.

[0053] In some embodiments, such as Figures 3-5 As shown, the heat exchanger 300 is installed on the side close to the receiving cavity 101, which maximizes the space on the opposite side of the heat exchanger 300. The first surface 310 of the heat exchanger 300 and the opening of the heat exchanger mounting bracket 600 face the opposite side of the heat exchanger 300. The pipes connected to the heat exchanger 300 are laid in the space on the opposite side, which can make full use of the dimensions in the width direction of the housing 100 to meet the requirements such as the bending length of the pipes and optimize the layout of the components inside the receiving cavity 101.

[0054] In some embodiments, such as Figures 7-13 As shown, the heat exchanger mounting bracket 600 also includes a connecting plate 620, which connects the mounting bracket body 610 and the back plate 110. A first buffer 710 is provided between the connecting plate 620 and the back plate 110, and the first buffer 710 is made of vibration damping material.

[0055] In the above embodiment, by providing a first buffer 710 between the connecting plate 620 and the back plate 110, the vibration caused by the fluid flow in the heat exchanger 300 can be absorbed during the operation of the unit, reducing the transmission of vibration to the back plate 110 and the casing 100, thereby reducing the noise caused by structural resonance. With the covering of the sound-absorbing component, the overall quiet performance of the unit during operation can be further improved.

[0056] In some embodiments, the first surface 310 and the second surface 320 of the heat exchanger 300 extend in the height direction of the housing 100.

[0057] like Figures 7-12 As shown, the mounting bracket body 610 includes a first mounting plate 611, a second mounting plate 612, a third mounting plate 613, and a fourth mounting plate 614.

[0058] The first mounting plate 611 and the second mounting plate 612 extend along the height of the housing 100. The first mounting plate 611 faces the side of the second surface 320, and the second mounting plate 612 faces the side of the circumferential surface 330 away from the back plate 110. The third mounting plate 613 connects the top of the first mounting plate 611 and the top of the second mounting plate 612, and covers the top of the circumferential surface 330. The fourth mounting plate 614 connects the bottom of the first mounting plate 611 and the bottom of the second mounting plate 612, and covers the bottom of the circumferential surface 330.

[0059] The aforementioned connecting plate 620 is provided on the side of the third mounting plate 613 and the fourth mounting plate 614 near the back plate 110, and is connected to the back plate 110 through the connecting plate 620.

[0060] Through the above structure, the mounting bracket body 610 forms a multi-faceted coverage of the heat exchanger 300, which can effectively block the noise generated by the operation of the heat exchanger 300; the third mounting plate 613 and the fourth mounting plate 614 are connected to the back plate 110 via the connecting plate 620 and the buffer, which can weaken the transmission of vibration to the casing 100. In combination with the multi-faceted covering structure of the sound-absorbing component, vibration reduction and noise reduction are achieved, and the quiet operation performance of the unit is improved.

[0061] In some embodiments, such as Figures 15-17 As shown, the first mounting plate 611 has a plurality of plug-in portions 6111 on one side edge near the back plate 110, and the back plate 110 has a plurality of plug-in interfaces 111 through the plug-in portions 6111. The plug-in portions 6111 are inserted into the corresponding plug-in interfaces 111 to restrict the movement of the heat exchanger mounting bracket 600.

[0062] By using the insertion part 6111 and the insertion interface 111, the installation position of the heat exchanger mounting bracket 600 on the back plate 110 can be initially positioned, thereby simplifying the assembly operation, improving the installation efficiency, and helping to ensure the installation accuracy and overall structural stability of the heat exchanger mounting bracket 600.

[0063] In some embodiments, a plurality of plug-in interfaces 111 are provided through the back plate 110. The plurality of plug-in interfaces 111 are spaced apart along the width direction of the housing 100 to change the installation position of the heat exchanger mounting bracket 600 on the back plate 110, thereby adapting to the installation of heat exchangers 300 of different sizes or layouts, realizing flexible adjustment of the installation position, and facilitating the expansion of the product's applications.

[0064] Optionally, the insertion interface 111 is located near the side of the housing 100 in the width direction, so that the heat exchanger mounting bracket 600 and the heat exchanger 300 are located near the side of the receiving cavity 101, thereby optimizing the layout of the components inside the receiving cavity 101.

[0065] In some embodiments, such as Figure 17 As shown, the first mounting plate 611 has a folded edge 615 on one side near the back plate 110. The folded edge 615 is close to the back plate 110 to support the first mounting plate 611 and further enhance the structural stability of the heat exchanger mounting bracket 600.

[0066] In some embodiments, such as Figures 3-5 As shown, an electrical box 800 is also provided within the receiving cavity 101. The electrical box 800 is used to install and protect the electrical components of the indoor unit to realize the corresponding control functions. Electrical components such as the main control board, relays, fuses, and terminal blocks are installed inside the electrical box 800.

[0067] In some embodiments, the electrical box 800 includes a box body 810, the box body 810 includes a box body back plate 811, and the opposite side of the box body back plate 811 is open to form a box body opening. The electrical box 800 also includes a box cover 820, which covers the box body opening.

[0068] In some embodiments, the back panel 811 of the box is disposed facing the back panel 110 of the housing 100, such that the opening of the box faces the opening portion 102 of the housing 100.

[0069] When maintenance or inspection of the electrical components inside the electrical box 800 is required, the cover plate 200 is first removed to expose the electrical box 800. Since the opening of the electrical box 800 faces the opening part 102, after removing the cover 820, the components inside the electrical box 800 can be operated through the opening part 102, which facilitates daily maintenance and other operations.

[0070] The box body 810 also includes a box body side panel, which is connected to the box body back panel 811, and defines the box body opening on the side of the box body side panel away from the box body back panel 811.

[0071] In some embodiments, such as Figures 3-5 As shown, the electrical box 800 is located above the heat exchanger 300. The box side panel includes a lower side panel 812 located at the bottom, which is fixedly connected to the third mounting plate 613 of the heat exchanger mounting bracket 600.

[0072] In the above embodiment, the top of the heat exchanger mounting bracket 600 is connected to the bottom of the electrical box 800, and the heat exchanger mounting bracket 600 is connected to the back plate 110, so that the heat exchanger mounting bracket 600, the electrical box 800, and the back plate 110 are connected to form a whole. The heat exchanger mounting bracket 600 not only supports and fixes the heat exchanger 300, but its top is also connected to the electrical box 800, which not only ensures the stable installation of the heat exchanger 300, but also provides support and fixation for the electrical box 800.

[0073] Since the heat exchanger mounting bracket 600, electrical box 800 and back plate 110 are connected to form an integral structure, while ensuring the realization of their respective functions, the indoor unit as a whole forms a solid connection frame, thereby effectively improving the structural strength and reliability of the indoor unit.

[0074] In some embodiments, such as Figures 5-7 and Figure 13 As shown, the third mounting plate 613 has an extension plate 6131 on its edge away from the back plate 110. The extension plate 6131 is opposite to and fixedly connected to the lower side plate 812. A second buffer 720 is provided between the extension plate 6131 and the lower side plate 812. The second buffer 720 is made of vibration damping material.

[0075] In the above embodiment, by providing an extension plate 6131, the contact surface between the electrical box 800 and the heat exchanger mounting bracket 600 is increased, providing more stable support and connection for the electrical box 800 and ensuring the stability of the electrical box 800 installation; at the same time, the second buffer 720 can effectively absorb the vibration caused by the fluid flow in the heat exchanger 300, reduce the transmission of vibration to the back plate 110 and the casing 100, thereby reducing the noise caused by structural resonance. With the covering of the sound-absorbing component, the overall quiet performance of the unit during operation can be further improved.

[0076] In some embodiments, such as Figure 4 and Figure 5As shown, an electrical box bracket 900 is also provided in the receiving cavity 101. The electrical box bracket 900 extends in the thickness direction of the housing 100. One end of the electrical box bracket 900 is connected to the back plate 811 of the box body, and the other end of the electrical box bracket 900 is connected to the back plate 110. A reserved space 104 is formed between the back plate 811, the back plate 110 and the electrical box bracket 900.

[0077] In the above embodiment, by installing an electrical box bracket 900 between the back plate 811 of the electrical box 800 and the back plate 110 of the housing 100, the electrical box 800 is separated from the back plate 110, thereby making the electrical box 800 closer to the opening part 102 of the housing 100, which facilitates wiring or maintenance of the electrical box 800. At the same time, a reserved space 104 is formed between the back plate 811, the back plate 110 and the electrical box bracket 900, which can be used to install other components, such as water pumps, so that the space in the thickness direction of the housing 100 is fully utilized, improving the utilization rate of the internal space of the unit.

[0078] In some embodiments, such as Figures 5-7 As shown, a limiting plate 6132 is provided on the third mounting plate 613. The limiting plate 6132 is located on the rear side of the box back plate 811 and is abutted against the box back plate 811.

[0079] In the above embodiment, the limiting plate 6132 limits the electrical box 800 on the rear side of the box back plate 811, preventing the lower side plate 812 of the electrical box 800 from sliding backward relative to the first mounting plate 611. With the fixed connection between the extension plate 6131 on the front side of the third mounting plate 613 and the lower side plate 812, the overall position of the electrical box 800 is fixed, which can effectively limit the lateral and vertical displacement of the electrical box 800, making the installation of the electrical box 800 more stable and improving the reliability of the connection.

[0080] In some embodiments, the first buffer 710 and the second buffer 720 are buffer sleeves 730. For example... Figure 14 As shown, the buffer sleeve 730 includes a first sidewall 731 and a second sidewall 732 disposed opposite to each other and a connecting wall 733. The connecting wall 733 connects the first sidewall 731 and the second sidewall 732 and forms a sleeve interface 734 on one side of the two sidewalls. A sleeve cavity is defined between the first sidewall 731, the second sidewall 732 and the connecting wall 733.

[0081] The first buffer 710 is sleeved outside the connecting plate 620, and the first side wall 731 of the first buffer 710 is sandwiched between the connecting plate 620 and the back plate 110.

[0082] The second buffer 720 is sleeved outside the extension plate 6131, and the first side wall 731 of the second buffer 720 is sandwiched between the extension plate 6131 and the lower side plate 812.

[0083] In the above embodiment, a buffer sleeve 730 is fitted onto the connecting plate 620 and the extension plate 6131. ​​At the connection point between the heat exchanger mounting bracket 600 and adjacent components, it absorbs and buffers the vibration of the heat exchanger 300, achieving vibration reduction and noise reduction effects, thereby improving the quietness performance of the indoor unit of the heat pump unit. The buffer sleeve 730 can be connected to the corresponding components by fasteners.

[0084] In some embodiments, such as Figure 3 As shown, a refrigerant pipe 410 is also provided in the housing cavity 101. One end of the refrigerant pipe 410 is connected to the pipe connection port 311 of the heat exchanger 300, and the other end of the refrigerant pipe 410 extends to the bottom of the housing cavity 101 and is led out of the casing 100 to be used as a pipe interface to connect with external pipes.

[0085] like Figure 18 and Figure 19 As shown, the housing 100 also includes a pipe fixing plate 150, which is located near the bottom of the receiving cavity 101. The refrigerant pipe 410 is fixed to the pipe fixing plate 150 by a locking member 1000.

[0086] The refrigerant pipe 410 is fixed to the pipe fixing plate 150 by the locking member 1000, which can reliably limit and fix the pipe, facilitate the connection operation with external pipes, avoid shaking during installation or use, and improve the reliability of system operation.

[0087] In some embodiments, the locking element 1000 is an R-type clamp.

[0088] Specifically, such as Figures 23-25 As shown, the locking member 1000 includes a locking member body 1001 and two fixing parts 1002; the locking member body 1001 is arranged circumferentially around the refrigerant pipe 410, and the locking member body 1001 includes a first end and a second end located circumferentially on the refrigerant pipe 410; the two fixing parts 1002 are respectively provided at the first end and the second end of the locking member body 1001, and the two fixing parts 1002 extend toward the same side of the locking member body 1001 and are arranged opposite to each other.

[0089] When the locking member 1000 is locked, the two fixing parts 1002 are abutted and connected to the pipe fixing plate 150. The locking member 1000 forms a closed structure in the circumferential direction of the refrigerant pipe 410 and confines the refrigerant pipe 410 in the locking member 1000.

[0090] In the above embodiment, the locking member 1000 is an R-type clamp, which forms a closed structure around the refrigerant pipe 410. It can securely confine the refrigerant pipe 410 within the locking member 1000, thereby achieving reliable fixation of the refrigerant pipe 410 and preventing displacement or loosening of the refrigerant pipe 410 due to vibration or external force during unit operation. This reduces vibration noise and flow noise, while ensuring the safe operation of the refrigerant pipe 410 and the overall reliability of the indoor unit of the heat pump unit.

[0091] In some embodiments, such as Figure 3 As shown, a water pipe 420 is also provided in the housing cavity 101. One end of the water pipe 420 is connected to the pipe connection port 311 of the heat exchanger 300, and the other end of the water pipe 420 extends to the bottom of the housing cavity 101 and is led out of the casing 100 to be used as a pipe interface to connect with external pipes.

[0092] Referring to the refrigerant pipe 410 described above, the water pipe 420 is also limited and fixed to the pipe end fixing plate 150. For example, the water pipe 420 can be fixed to the pipe end fixing plate 150 by a U-shaped clamp.

[0093] The U-shaped clamp has a U-shaped cross-section and is connected to the pipe fixing plate 150 on both sides. The U-shaped clamp and the pipe fixing plate 150 work together to fix the water pipe 420.

[0094] The water pipe 420 and the refrigerant pipe are fixed by U-shaped clamps and R-shaped clamps respectively, and the positions are as close as possible to the bottom of the receiving cavity 101 to ensure the firm positioning and installation of each pipe, which facilitates the operation and safety of off-site installation.

[0095] In some embodiments, such as Figure 20 and Figure 21 As shown, the pipe fixing plate 150 includes an assembly plate 151 disposed near the bottom of the back plate 110. The assembly plate 151 is vertically disposed and connected to the back plate 110. A portion of the surface of the assembly plate 151 protrudes away from the back plate 110 to form a pipe fixing part 1511. The front side of the pipe fixing part 1511 is close to the refrigerant pipe 410, and a locking member 1000 is installed on the front side of the pipe fixing part 1511.

[0096] In the above embodiment, the pipe fixing plate 150 is connected to the back plate 110 through the assembly plate 151. The assembly plate 151 is provided with a pipe fixing part 1511. By installing the locking part 1000 on the pipe fixing part 1511, the pipe can be reliably limited and fixed, so that the pipe is effectively supported before being led out of the housing 100, which facilitates the connection operation with external pipes, avoids shaking during installation or use, and improves the reliability of system operation.

[0097] In some embodiments, such as Figure 20 and Figure 21 As shown, the nozzle fixing plate 150 also includes a positioning plate 152 located at the bottom of the receiving cavity 101. The positioning plate 152 is disposed near the back plate 110 and connected to the lower edge of the mounting plate 151. The positioning plate 152 is connected to the bottom plate 140 and together they seal the bottom of the receiving cavity 101.

[0098] like Figure 20 As shown, a plurality of first sub-positioning parts 1521 are provided through the positioning plate 152, and the plurality of first sub-positioning parts 1521 are close to the front side of the positioning plate 152 and extend to the front edge of the positioning plate 152. Figure 22 As shown, a plurality of second sub-positioning parts 141 are provided through the base plate 140. The plurality of second sub-positioning parts 141 are close to the rear side of the base plate 140 and extend to the rear edge of the base plate 140. A plurality of first sub-positioning parts 1521 and a plurality of second sub-positioning parts 141 are connected one-to-one to form a plurality of pipe opening positioning parts 103, as shown. Figure 18 As shown.

[0099] The ends of the pipes (e.g., refrigerant pipe 410 and water pipe 420) extend outward through the pipe positioning part 103 for connection with external pipes.

[0100] A second aspect of this application also provides a heat pump unit indoor unit, including a housing 100, with a receiving cavity 101 defined inside the housing 100.

[0101] A heat exchanger 300 is provided inside the receiving cavity 101, and a fluid flow channel is defined inside the heat exchanger 300. The heat exchanger 300 has a box-type structure and includes a first surface 310, a second surface 320 and a circumferential surface 330 arranged opposite to each other. The circumferential surface 330 is annular and closes the space between the first surface 310 and the second surface 320. A pipe connection port 311 is provided on the first surface 310.

[0102] A sound-absorbing component is wrapped around the heat exchanger 300. The sound-absorbing component is used to block the flow noise of the fluid inside the heat exchanger 300. The sound-absorbing component includes a first sound-absorbing layer 510, a second sound-absorbing layer 520 and a third sound-absorbing layer 530. The first sound-absorbing layer 510 covers the first surface 310 and avoids the pipe connection port 311. The second sound-absorbing layer 520 covers the second surface 320. The third sound-absorbing layer 530 has a ring structure and wraps around the circumferential surface 330.

[0103] The indoor unit of the heat pump unit provided in the second aspect of this application may overlap with the indoor unit of the heat pump unit provided in the first aspect, but this should not be construed as limiting each other by mutual exclusion.

[0104] Other structures of the indoor unit of the heat pump unit provided in the second aspect above can be referred to the embodiments in the first aspect, and will not be repeated here.

[0105] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0106] The above embodiments are only used to illustrate the technical solutions of this application and not to limit them; although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this application or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of this application, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in this application.

Claims

1. An indoor unit of a heat pump unit, characterized in that, include: A housing, wherein a receiving cavity is defined inside the housing; A heat exchanger is disposed within the receiving cavity, and a fluid flow channel is defined inside the heat exchanger. The heat exchanger has a box-type structure and includes a first surface, a second surface, and a circumferential surface connecting the first surface and the second surface, with a pipe connection port provided on the first surface. A sound-absorbing component, wrapped around the heat exchanger, is used to block the flow noise of the fluid inside the heat exchanger. The sound-absorbing component includes: A first sound-absorbing layer covers the first surface and avoids the pipe connection port; A second sound-absorbing layer covers the second surface; A third sound-absorbing layer covers the circumferential surface.

2. The indoor unit of the heat pump unit according to claim 1, characterized in that, The housing includes a back plate that closes the rear side of the receiving cavity; The cavity is further provided with a heat exchanger mounting bracket, which includes a mounting bracket body. The mounting bracket body and the back plate form a mounting cavity with an opening on one side. The heat exchanger is installed in the mounting cavity, and the first surface faces the opening of the mounting cavity.

3. The indoor unit of the heat pump unit according to claim 2, characterized in that, The heat exchanger mounting bracket also includes a connecting plate, which connects the mounting bracket body and the back plate. A first buffer is provided between the connecting plate and the back plate, and the first buffer is made of vibration damping material.

4. The indoor unit of the heat pump unit according to claim 3, characterized in that, The first and second surfaces of the heat exchanger extend in the height direction of the casing. The mounting bracket body includes: A first mounting plate is provided extending in the height direction of the housing, and the first mounting plate faces the second surface side; A second mounting plate extends in the height direction of the housing, and the second mounting plate faces the side of the circumferential surface away from the back plate; A third mounting plate connects the top of the first mounting plate and the top of the second mounting plate, and covers the top of the circumferential surface; and A fourth mounting plate connects the bottom of the first mounting plate and the bottom of the second mounting plate, and covers the bottom of the circumferential surface; The connecting plate is provided on the side of the third mounting plate and the fourth mounting plate near the back plate, and is connected to the back plate through the connecting plate.

5. The indoor unit of the heat pump unit according to claim 4, characterized in that, An electrical box is also provided inside the receiving cavity, and the electrical box is located above the heat exchanger; The electrical box includes a lower side panel located at the bottom, which is fixedly connected to the third mounting plate.

6. The indoor unit of the heat pump unit according to claim 5, characterized in that, The third mounting plate has an extension plate along its edge away from the back plate. The extension plate is opposite to and fixedly connected to the lower side plate. A second buffer is provided between the extension plate and the lower side plate. The second buffer is made of vibration damping material.

7. The indoor unit of the heat pump unit according to claim 6, characterized in that, The first and second buffer components are buffer sleeves, and the buffer sleeves include: The first and second sidewalls are arranged opposite to each other; and A connecting wall connects the first sidewall and the second sidewall, and forms a socket on one side of the two sidewalls; A socket cavity is defined between the first sidewall, the second sidewall, and the connecting wall; The first buffer is sleeved on the outside of the connecting plate, and the first sidewall of the first buffer is sandwiched between the connecting plate and the back plate; The second buffer is sleeved outside the extension plate, and the first sidewall of the second buffer is sandwiched between the extension plate and the lower side plate.

8. The indoor unit of the heat pump unit according to claim 1, characterized in that, A refrigerant pipeline is also provided in the receiving cavity. One end of the refrigerant pipeline is connected to the pipeline connection port of the heat exchanger, and the other end of the refrigerant pipeline extends to the bottom of the receiving cavity and is led out of the casing. The housing also includes a pipe fixing plate, which is located near the bottom of the receiving cavity, and the refrigerant pipeline is fixed to the pipe fixing plate by a locking device.

9. The indoor unit of the heat pump unit according to claim 8, characterized in that, The locking element includes: A locking component body is circumferentially arranged around the refrigerant pipeline, the locking component body including a first end and a second end located circumferentially around the refrigerant pipeline; and Two fixing parts are respectively provided at the first end and the second end of the locking member body, and the two fixing parts extend toward the same side of the locking member body and are arranged opposite to each other; In the locked state of the locking member, the two fixing parts are abutted and connected to the pipe fixing plate. The locking member forms a closed structure in the circumferential direction of the refrigerant pipe and confines the refrigerant pipe within the locking member.

10. An indoor unit of a heat pump unit, characterized in that, include: A housing, wherein a receiving cavity is defined inside the housing; A heat exchanger is disposed within the receiving cavity, and a fluid flow channel is defined inside the heat exchanger. The heat exchanger has a box-type structure and includes a first surface, a second surface, and a circumferential surface arranged opposite to each other. The circumferential surface is annular and closes the space between the first surface and the second surface. A pipe connection port is provided on the first surface. A sound-absorbing component, wrapped around the heat exchanger, is used to block the flow noise of the fluid inside the heat exchanger. The sound-absorbing component includes: A first sound-absorbing layer covers the first surface and avoids the pipe connection port; A second sound-absorbing layer covers the second surface; The third sound-absorbing layer has a ring-shaped structure and wraps around the circumferential surface.

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