Indoor unit and heating and ventilation equipment

Abstract

The utility model discloses an indoor unit and heating and ventilation equipment. The indoor unit comprises a shell assembly, a fan assembly, a convection heat exchanger and a radiation heat exchanger. A mounting cavity is formed in the shell assembly. The draught fan assembly is arranged in the mounting cavity and comprises a draught fan shell and a draught fan which are connected together, the draught fan shell and the shell assembly are connected and define a heat convection channel, and the draught fan is located in the heat convection channel; the convection heat exchanger is arranged in the convection heat exchange channel, and the convection heat exchanger and the fan are arranged at intervals in the flowing direction of airflow; the radiation heat exchanger is installed on the shell assembly and connected with the convection heat exchanger in parallel, the radiation heat exchanger is located outside the installation cavity, part of the outer surface of the radiation heat exchanger forms part of the appearance face of the indoor unit, and a radiation heat exchange channel is defined between the radiation heat exchanger and the shell assembly. The indoor unit is good in use performance.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and particularly to an indoor unit and a heating and ventilation equipment applying the indoor unit. Background Art

[0002] In an air conditioning system, the comfort level brought by the air conditioning system to users and the noise generated during the operation of the air conditioning system are important factors determining the performance of the air conditioning system.

[0003] In the related art, an indoor unit of an air conditioning system is equipped with a heat exchanger for heat exchange with indoor air and a fan for driving air flow to flow through the heat exchanger. During the heating process, mainly the fan drives the indoor air to flow, and after heat exchange through the heat exchanger, hot air is blown out from the air outlet of the indoor unit. Among them, most of the heat exchangers are convection heat exchangers.

[0004] However, during the heating process of the above air conditioning system, not only is the generated noise relatively large, but also the hot air will directly blow towards users, which will reduce the comfort level of users and further reduce the overall performance of the air conditioning system. Summary of the Utility Model

[0005] The main purpose of the present application is to provide an indoor unit and a heating and ventilation equipment, which can not only reduce the working noise of the air conditioning system during the heating process, but also improve the comfort level of users.

[0006] On the one hand, the present application provides an indoor unit, including a housing assembly, a fan assembly, a convection heat exchanger and a radiation heat exchanger: an installation cavity is formed inside the housing assembly; the fan assembly is arranged in the installation cavity, the fan assembly includes a fan housing and a fan connected together, the fan housing is connected to the housing assembly to enclose a convection heat exchange channel, and the fan is located in the convection heat exchange channel; the convection heat exchanger is arranged in the convection heat exchange channel and is arranged at intervals with the fan in the air flow direction; the radiation heat exchanger is installed on the housing assembly and is arranged in parallel with the convection heat exchanger, the radiation heat exchanger is located outside the installation cavity, a part of the outer surface of the radiation heat exchanger forms a part of the appearance surface of the indoor unit, and a radiation heat exchange channel is enclosed between the radiation heat exchanger and the housing assembly.

[0007] As an optional implementation manner, the housing assembly includes a housing main body and a support member, a first installation groove is formed on the housing main body, the support member is connected to the housing main body and seals the notch of the first installation groove, and an installation cavity is enclosed between the support member and the groove wall of the first installation groove; the convection heat exchanger and the fan assembly are both connected to the housing main body, and the radiation heat exchanger is installed on the support member.

[0008] As an optional embodiment, the convection heat exchanger has a first end and a second end arranged relatively to each other in the height direction of the indoor unit, and the first end is located above the second end; the first end is located on the side of the second end close to the bottom wall of the first mounting groove, and the angle between the convection heat exchanger and the bottom wall of the first mounting groove is an acute angle.

[0009] As an optional embodiment, a second mounting groove is formed on the support member, and the bottom of the second mounting groove extends toward the bottom of the first mounting groove; the radiation heat exchanger is arranged in the second mounting groove and is enclosed with the groove wall of the second mounting groove to form a radiation heat exchange channel; the radiation heat exchange channel has a radiation air inlet and a radiation exhaust port, and the radiation air inlet is located below the radiation exhaust port.

[0010] As an optional implementation, a filter element is connected between the support element and the radiation heat exchanger, and the filter element is arranged at the radiation air inlet; a plurality of filter holes distributed at intervals are formed on the filter element.

[0011] As an optional embodiment, the convection heat exchange channel has a convection air inlet and a convection air outlet, and the convection air inlet is arranged adjacent to the radiation air inlet.

[0012] As an optional embodiment, the convection heat exchange channel has a convection air inlet and a convection exhaust port; the shell body includes a back plate and a plurality of enclosures arranged around the back plate, and the plurality of enclosures and the back plate are combined to form a first mounting groove; wherein the convection exhaust port is formed on any enclosure.

[0013] As an optional embodiment, the convection heat exchange channel includes a first channel section and a second channel section that are connected, the first channel section is constructed by a shell assembly, and the second channel section is constructed by a fan casing; wherein the convection heat exchanger is located in the first channel section, and the fan is located in the second channel section.

[0014] As an optional implementation, the shell body includes a back plate and a plurality of enclosure plates arranged around the back plate, and the plurality of enclosure plates and the back plate are combined to form a first installation groove.

[0015] As an optional embodiment, the convection heat exchange channel has a convection air inlet and a convection exhaust port; the end of the first channel section facing away from the second channel section is formed as the convection air inlet, and the end of the second channel section facing away from the first channel section is formed as the convection exhaust port.

[0016] As an optional embodiment, the convection air inlet is located below the convection exhaust port; the convection air inlet is formed at the bottom of the shell assembly, the convection exhaust port is formed on the fan housing, and the convection exhaust port is arranged toward the side of the bottom wall of the first mounting slot away from the first mounting slot.

[0017] As an alternative embodiment, the convective air inlet includes an air inlet opening and a plurality of air inlet holes; the air inlet opening is formed by enclosing the bottom end of the support member and the bottom of the housing body, and the air inlet opening is arranged on a side facing away from the bottom of the first installation groove; the plurality of enclosing plates include a bottom enclosing plate forming the bottom end of the housing body, and the plurality of air inlet holes are spacedly arranged on the bottom enclosing plate, and each air inlet hole is arranged downward.

[0018] As an alternative embodiment, a grille is connected to the bottom of the housing body; one end of the grille is connected to the bottom end of the support member, the other end of the grille is connected to the bottom enclosing plate, and the grille covers the air inlet opening and the plurality of air inlet holes.

[0019] As an alternative embodiment, the convective air inlet is located above the convective air outlet; the plurality of enclosing plates include a top enclosing plate forming the top end of the housing body, the convective air inlet is formed on the top enclosing plate and is arranged upward; the convective air outlet is formed on the blower housing and is arranged on a side facing away from the bottom wall of the first installation groove.

[0020] As an alternative embodiment, the convective air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are spacedly arranged on the top enclosing plate.

[0021] As an alternative embodiment, the indoor unit provided in this application further includes a deflector rotatably connected to the blower housing, and the deflector is arranged at the convective air outlet to open or close the convective air outlet.

[0022] As an alternative embodiment, the convective heat exchange channel has a convective air inlet and a convective air outlet; one end of the second channel section facing away from the first channel section is formed as the convective air inlet, and the convective air inlet is arranged on a side facing away from the bottom wall of the first installation groove; one end of the first channel section facing away from the second channel section is formed as the convective air outlet, the plurality of enclosing plates include a top enclosing plate forming the top end of the housing body, and the convective air outlet is formed on the top enclosing plate and is arranged upward.

[0023] As an alternative embodiment, the blower housing extends from bottom to top; an inclined opening is formed at the top of the blower housing, and the convective heat exchanger is installed at the inclined opening.

[0024] As an alternative embodiment, the plurality of enclosing plates include a bottom enclosing plate oppositely arranged to the top enclosing plate, and an air inlet opening communicating with the convective air inlet is formed between the bottom enclosing plate and the bottom end of the support member; a grille is connected between the bottom enclosing plate and the support member, and the grille covers the air inlet opening.

[0025] As an alternative embodiment, the convective heat exchange channel has a convective air inlet and a convective air outlet; the first channel section includes an air inlet channel section and an air outlet channel section, the air inlet channel section is located upstream of the second channel section, and the air outlet channel section is located downstream of the second channel section; one end of the air inlet channel section facing away from the second channel section forms the convective air inlet, and the convective air inlet is arranged upward; a convective air outlet is formed on the channel wall of the air outlet channel section, and the convective air outlet is arranged towards the side of the indoor unit.

[0026] As an alternative embodiment, the plurality of enclosing plates include a top enclosing plate and two side enclosing plates, the top enclosing plate forms the top of the housing body, and the two side enclosing plates are connected to opposite sides of the top enclosing plate; convective air outlets are formed on both side enclosing plates.

[0027] As an alternative embodiment, the convective air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged at intervals on the top enclosing plate.

[0028] As an alternative embodiment, the convective air outlet includes a plurality of air outlet holes, and the plurality of air outlet holes are arranged at intervals on the corresponding side enclosing plate.

[0029] As an alternative embodiment, the indoor unit provided in the present application further includes a first regulating valve and a second regulating valve, the first regulating valve is connected to the convective heat exchanger, and the second regulating valve is connected to the radiant heat exchanger.

[0030] As an alternative embodiment, the indoor unit provided in the present application further includes a water receiving tray; the water receiving tray is arranged below the convective heat exchanger and is connected to the housing assembly.

[0031] As an alternative embodiment, two spaced-apart support portions are provided at the bottom of the housing assembly.

[0032] On the other hand, the present application provides a heating and ventilation device including the above-mentioned indoor unit.

[0033] In the indoor unit and the heating and ventilation device provided in the embodiments of the present application, due to the provision of the fan assembly, the convective heat exchanger and the radiant heat exchanger, a convective heat exchange channel and a radiant heat exchange channel are formed. As a result, when the indoor unit is in the heating mode, the convective heat exchanger and the radiant heat exchanger work alternately. Specifically, the indoor unit is set with a preset temperature; when the outside temperature is lower than the preset temperature, the fan drives the outside air flow to flow to the outside environment through the convective heat exchange channel; when the outside temperature is greater than or equal to the preset temperature, the outside air flow flows to the outside environment through the radiant heat exchange channel. That is, when the indoor unit is in the heating mode, only one of the convective heat exchanger and the radiant heat exchanger exchanges heat with the indoor space.

[0034] That is to say, when the indoor unit is in the heating mode, as long as the outside temperature is greater than or equal to the preset temperature, the blower will stop rotating and the convection heat exchanger will not work. At this time, since the rotation of the blower has stopped, there is no noise caused by the rotation of the blower. Moreover, under the action of the radiation heat exchanger, the heat generated during the flow of the refrigerant will be in a radial shape, and there is only convection heat transfer at both ends of the radiation heat transfer channel. During this process, there is no strong hot air blowing to the user, which will improve the comfort of the user when the indoor unit is in the heating mode. Moreover, in the radiation heating mode, combining the convection heat transfer and radiation heat transfer methods can improve the heating efficiency of the indoor unit provided by the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a schematic perspective view of the first indoor unit provided by the embodiments of the present application;

[0036] Figure 2 is a schematic perspective view of the second indoor unit provided by the embodiments of the present application;

[0037] Figure 3 is a schematic perspective view of the third indoor unit provided by the embodiments of the present application;

[0038] Figure 4 is a schematic perspective view of the fourth indoor unit provided by the embodiments of the present application;

[0039] Figure 5 is Figure 1 an exploded view of the indoor unit shown;

[0040] Figure 6 is Figure 2 an exploded view of the indoor unit shown;

[0041] Figure 7 is Figure 3 an exploded view of the indoor unit shown;

[0042] Figure 8 is Figure 4 an exploded view of the indoor unit shown;

[0043] Figure 9 is Figure 1 a schematic plan view of the indoor unit shown;

[0044] Figure 10 is Figure 2 a schematic plan view of the indoor unit shown;

[0045] Figure 11 is Figure 3 a schematic plan view of the indoor unit shown;

[0046] Figure 12 isFigure 4 Schematic diagram of the planar structure of the indoor unit shown

[0047] Figure 13 is Figure 9 Cross-sectional view along the A-A direction

[0048] Figure 14 is Figure 10 Cross-sectional view along the B-B direction

[0049] Figure 15 is Figure 11 Cross-sectional view along the C-C direction

[0050] Figure 16 is Figure 12 Cross-sectional view along the D-D direction

[0051] Figure 17 Schematic diagram of the three-dimensional structure of the radiation heat exchanger provided by the embodiment of the present application

[0052] Figure 18 is Figure 17 Schematic diagram of the three-dimensional structure in another perspective

[0053] Figure 19 Schematic diagram of the planar structure of the radiation heat exchanger provided by the embodiment of the present application

[0054] Figure 20 Refrigerant flow diagram of the HVAC equipment provided by the embodiment of the present application in the cooling mode

[0055] Figure 21 Refrigerant flow diagram of the HVAC equipment provided by the embodiment of the present application in the convective heating mode

[0056] Figure 22 Refrigerant flow diagram of the HVAC equipment provided by the embodiment of the present application in the radiation heating mode

[0057] Explanation of the reference numerals in the drawings:

[0058] 1. Housing assembly; 2. Fan assembly; 3. Convective heat exchanger; 4. Radiation heat exchanger; 5. Convective heat exchange channel; 6. Radiation heat exchange channel; 7. Pipe assembly; 8. First regulating valve; 9. Second regulating valve

[0059] 10. Indoor unit; 11. Housing main body; 12. Support member; 13. Installation cavity; 14. Installation bracket; 21. Fan housing; 22. Fan; 31. First end; 32. Second end; 41. Radiant heat exchange plate; 42. Header pipe; 43. Microchannel assembly; 44. Fin group; 45. Refrigerant inlet joint; 46. Refrigerant outlet joint; 47. Connecting seat; 51. First channel section; 52. Second channel section; 53. Convective air inlet; 54. Convective air outlet; 61. Radiant air inlet; 62. Radiant air outlet; 20. Outdoor unit;

[0060] 111. Back panel; 112. Enclosure panel; 113. First installation groove; 211. Tilted opening; 121. Second installation groove; 122. Support plate; 123. Extension plate; 124. Flange; 125. First compensation plate; 126. Second compensation plate; 141. Tilted surface; 142. Installation plate; 143. Connecting plate; 144. Limiting plate; 411. Radiant surface; 42a. First liquid collecting pipe; 42b. Second liquid collecting pipe; 431. Flat tube; 441. Fin unit; 442. Flow channel; 471. Support notch; 511. Intake channel section; 512. Exhaust channel section; 531. Intake opening; 532. Intake hole; 541. Exhaust hole; 110. Water receiving tray; 120. Support part; 130. Grille; 140. Deflector; 150. Throttle valve; 201. Compressor; 202. Outdoor heat exchanger;

[0061] 112a. Top enclosure panel; 112b. Bottom enclosure panel; 112c. Side enclosure panel; 1421. Assembly groove; 1422. First groove wall; 1423. Second groove wall; 1101. Water receiving groove; 1201. Weight reduction groove; 1301. First protection part; 1302. Second protection part. Detailed implementation mode

[0062] In the related art, the indoor unit of an air conditioning system is equipped with a heat exchanger for heat exchange with indoor air and a fan for driving air flow to flow through the heat exchanger. During the heating process, mainly the fan drives the indoor air to flow, and after heat exchange through the heat exchanger, the hot air is blown out from the air outlet of the indoor unit. Among them, most heat exchangers adopt convective heat exchangers.

[0063] However, during the heating process of the above air conditioning system, not only is the generated noise relatively large, but also the hot air will directly blow towards the user, which will reduce the comfort of the user, and further reduce the overall performance of the air conditioning system.

[0064] Therefore, the embodiments of the present application provide an indoor unit and a heating and ventilation equipment. When heating the indoor environment, the convective heat exchanger and the radiant heat exchanger can be alternately used for heat exchange, which can not only reduce the working noise of the heating and ventilation equipment during operation, but also improve the comfort of the user during the heating process.

[0065] The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0066] Please refer to Figures 1 to 4 , Figure 1 which is a perspective structural view of the first indoor unit provided by the embodiment of the present application, Figure 2 which is a perspective structural view of the second indoor unit provided by the embodiment of the present application, Figure 3 which is a perspective structural view of the third indoor unit provided by the embodiment of the present application, Figure 4 which is a perspective structural view of the fourth indoor unit provided by the embodiment of the present application. As Figures 1 to 4 shown, the present embodiment provides an indoor unit 10, including a housing assembly 1.

[0067] Please continue to refer to Figures 5 to 8 , Figure 5 which is an exploded view of the indoor unit shown in Figure 1 , Figure 6 which is an exploded view of the indoor unit shown in Figure 2 , Figure 7 which is an exploded view of the indoor unit shown in Figure 3 , Figure 8 which is an exploded view of the indoor unit shown in Figure 4 . In some embodiments, the housing assembly 1 includes a housing main body 11 and a support member 12 connected together. Among them, the housing main body 11 includes a back plate 111 and a plurality of enclosing plates 112 surrounding the periphery of the back plate 111. The plurality of enclosing plates 112 and the back plate 111 enclose to form a first installation groove 113.

[0068] Furthermore, please refer to Figures 9 to 12 , Figure 9 which is a planar structural view of the indoor unit shown in Figure 1 , Figure 10 which is a planar structural view of the indoor unit shown in Figure 2 , Figure 11 which is a planar structural view of the indoor unit shown in Figure 3 , Figure 12 which is a planar structural view of the indoor unit shown in Figure 4 . The support member 12 is connected to the housing main body 11 and seals the notch of the first installation groove 113.

[0069] Please continue to refer to Figures 13 to 16 , Figure 13 which is a cross-sectional view along the A-A direction, Figure 9 , Figure 14 which is a cross-sectional view along the B-B direction, Figure 10 , Figure 15 which is a cross-sectional view along the C-C direction, Figure 11 , Figure 16 which is a cross-sectional view along the D-D direction of the indoor unit shown in Figure 12Cross-sectional view along the D-D direction. As shown in the figure, the support member 12 and the wall of the first installation groove 113 enclose an installation cavity 13.

[0070] Taking the posture of the indoor unit 10 during use as an example for illustration, the above-mentioned back panel 111 can be a rectangular plate, and the plurality of surrounding plates 112 surrounding the periphery of the back panel 111 can include a top surrounding plate 112a provided at the top end of the back panel 111, a bottom surrounding plate 112b provided at the bottom end of the back panel 111, and side surrounding plates 112c provided on the left and right sides of the back panel 111.

[0071] It should be noted that the up, down, left, and right directions of the indoor unit 10 can refer to Figures 1 to 4 the indicated direction in

[0072] Among them, the top surrounding plate 112a, the bottom surrounding plate 112b, and the back panel 111 are integrally formed together. The side surrounding plates 112c can be connected to the back panel 111, between the side surrounding plates 112c and the top surrounding plate 112a, and between the side surrounding plates 112c and the bottom surrounding plate 112b by detachable connection methods, such as connection by threaded fasteners and other connection methods.

[0073] It should be noted that the support member 12 is a sheet metal part, and the connection method between the support member 12 and the housing main body 11 can also be a detachable connection, such as connection by threaded fasteners. Specifically, the top end of the support member 12 can be connected to the top surrounding plate 112a, and the bottom end of the support member 12 can be connected to the bottom surrounding plate 112b. Of course, in some other embodiments, the opposite sides of the support member 12 can be respectively connected to the two side surrounding plates 112c. Here, the connection method between the support member 12 and the housing main body 11 is not specifically limited.

[0074] From the above, it can be seen that in the related art, the indoor unit only uses the method of combining a fan and a convection heat exchanger to achieve refrigeration or heating. Thus, during the heating process of the indoor unit, on the one hand, the operation of the fan will increase the working noise of the indoor unit. On the other hand, since the convection heat exchanger needs a large temperature difference between the indoor temperature and the set temperature to work effectively, under the driving action of the fan, the hot air blown out by the indoor unit will directly blow towards the user. In this way, the comfort of the user will be reduced.

[0075] Therefore, in order to overcome the above-mentioned defects, the indoor unit 10 provided in this embodiment may further include a fan assembly 2, a convection heat exchanger 3, and a radiation heat exchanger 4. The fan assembly 2 is disposed in the installation cavity 13. The fan assembly 2 includes a fan housing 21 and a fan 22 connected together. The fan housing 21 and the housing assembly 1 are connected to enclose a convection heat exchange channel 5. The fan housing 21 may be connected to the back plate 111 or may be connected to the side enclosing plates 112c on both sides. The connection method here may be by means of threaded fasteners. Here, the connection method between the fan housing 21 and the housing assembly 1 is not specifically limited.

[0076] It can be understood that the fan housing 21 is provided for installing the fan 22 and forming part of the convection heat exchange channel 5. Therefore, the fan 22 is located in the convection heat exchange channel 5. Specifically, the convection heat exchange channel 5 includes a first channel section 51 and a second channel section 52 that are connected. The first channel section 51 is constructed by the housing assembly 1, and the second channel section 52 is constructed by the fan housing 21. The fan 22 is located in the second channel section 52.

[0077] During the operation of the fan 22, in order to achieve cooling or heating of the indoor environment, it is necessary to also dispose the convection heat exchanger 3 in the convection heat exchange channel 5 and arrange it at intervals with the fan 22 in the air flow direction. Specifically, the convection heat exchanger 3 is located in the first channel section 51, and the convection heat exchanger 3 is connected to the back plate 111. Regarding the positional relationship between the fan 22 and the convection heat exchanger 3, that is, the fan 22 is located on the upstream side of the convection heat exchanger 3 or the fan 22 is located on the downstream side of the convection heat exchanger 3, both of these methods can achieve the purpose of this embodiment. The following will introduce in detail in the specific implementation manner in combination with the positional relationship between the fan 22 and the convection heat exchanger 3.

[0078] Since the radiation heat exchanger 4 has a high heat exchange efficiency, therefore, directly contacting the radiation heat exchanger 4 with the indoor environment can further improve the heat exchange effect of the radiation heat exchanger 4. Based on this, in this embodiment, the radiation heat exchanger 4 is located outside the installation cavity 13. Part of the outer surface of the radiation heat exchanger 4 forms part of the appearance surface of the indoor unit 10. The radiation heat exchanger 4 is arranged in parallel with the convection heat exchanger 3, and the radiation heat exchanger 4 is installed on the support member 12, and a radiation heat exchange channel 6 is enclosed between the radiation heat exchanger 4 and the support member 12.

[0079] It should be noted that in this embodiment, the radiation heat exchanger 4 does not operate in every working mode.

[0080] Specifically, when the indoor unit 10 is in the cooling mode, the fan 22 drives the outside air flow to flow to the outside environment through the convection heat exchange channel 5. That is to say, when the indoor unit 10 is in the cooling mode, only the convection heat exchanger 3 operates to exchange heat with the indoor environment to achieve the cooling function.

[0081] When the indoor unit 10 is in the heating mode, the convection heat exchanger 3 and the radiation heat exchanger 4 work alternately. Specifically, the indoor unit 10 has a convection heating mode and a radiation heating mode, and the indoor unit 10 is set with a preset temperature. When the outside temperature is lower than the preset temperature, the indoor unit 10 is in the convection heating mode, and the fan 22 drives the outside air flow to flow to the outside environment through the convection heat exchange channel 5. When the outside temperature is greater than or equal to the preset temperature, the indoor unit 10 is in the radiation heating mode, and the outside air flow flows to the outside environment through the radiation heat exchange channel 6. That is, when the indoor unit 10 is in the convection heating mode, only the convection heat exchanger 3 works, and when the indoor unit 10 is in the radiation heat exchange mode, only the radiation heat exchanger 4 works. Please refer to Figures 13 to 16 , where the direction of the solid arrow is the gas flow direction of the indoor unit 10 in the convection heating mode, and the direction of the dashed arrow is the gas flow direction of the indoor unit 10 in the radiation heating mode.

[0082] Among them, it is not difficult to see that for the radiation heat exchange channel 6, the incoming air flow should be cold air, the outgoing air flow should be hot air, and the air flow directly radiated by the radiation heat exchanger 4 should also be hot air.

[0083] That is to say, when the indoor unit 10 is in the heating mode, as long as the outside temperature is greater than or equal to the preset temperature, the fan 22 will stop rotating, and the convection heat exchanger 3 will not work. At this time, since the rotation of the fan 22 has stopped, there is no noise caused by the rotation of the fan 22. Moreover, under the action of the radiation heat exchanger 4, the heat generated during the flow of the refrigerant will be radiated, and there is only convection heat exchange at both ends of the radiation heat exchange channel 6. During this process, there is no strong hot air blowing to the user, which will improve the user comfort of the indoor unit 10 in the heating mode. In addition, in the radiation heating mode, combining the convection heat exchange method and the radiation heat exchange method can improve the heating efficiency of the indoor unit 10 provided in this embodiment.

[0084] It should be noted that the above preset temperature can be 26°C, and the preset temperature here is determined according to the actual setting value of the indoor unit 10. Here, no specific limitation is made on the preset temperature.

[0085] Please refer to Figure 6 , in order to enable the indoor unit 10 to switch between the cooling mode, the convection heating mode, and the radiation heating mode, the indoor unit 10 provided in this embodiment further includes a first regulating valve 8 and a second regulating valve 9. The first regulating valve 8 is connected to the convection heat exchanger 3, and the second regulating valve 9 is connected to the radiation heat exchanger 4. When the indoor unit 10 is in the cooling mode and the convection heating mode, the first regulating valve 8 is opened, and the second regulating valve 9 is closed. When the indoor unit 10 is in the radiation heating mode, the first regulating valve 8 is closed, and the second regulating valve 9 is opened.

[0086] That is to say, when the first regulating valve 8 is opened and the second regulating valve 9 is closed, the refrigerant flows through the convection heat exchanger 3 instead of flowing through the radiation heat exchanger 4; when the first regulating valve 8 is closed and the second regulating valve 9 is opened, the refrigerant flows through the radiation heat exchanger 4 instead of flowing through the convection heat exchanger 3.

[0087] In some specific embodiments, both the first regulating valve 8 and the second regulating valve 9 can be globe valves. Here, the types of the first regulating valve 8 and the second regulating valve 9 are not specifically limited.

[0088] Please refer to Figures 17 to 19 , Figure 17 which is a perspective structure schematic diagram of the radiation heat exchanger provided by the embodiment of the present application, Figure 18 and Figure 17 is a perspective structure schematic diagram from another perspective, Figure 19 and

[0089] is a planar structure schematic diagram of the radiation heat exchanger provided by the embodiment of the present application. As shown in the figure, in this embodiment, the radiation heat exchanger 4 includes a radiation heat exchange plate 41, two header pipes 42, a microchannel assembly 43, and a fin group 44. Among them, the radiation heat exchange plate 41 is arranged on the front side along the front-back direction of the indoor unit 10. The front plate surface of the radiation heat exchange plate 41 forms a radiation surface 411. In the radiation heating mode of the indoor unit 10, heat can be radiatively transferred to the indoor space through the radiation surface 411. The radiation heat exchange plate 41 can be made of a material with good thermal conductivity, such as aluminum, copper, etc. Here, the material of the radiation heat exchange plate 41 is not specifically limited.

[0090] Among them, it should be noted that the connection mode between the header pipe 42 and the radiation heat exchange plate 41 can be welding. Since the outer wall surface of the header pipe 42 is a rotary surface, in order to improve the connection reliability between the header pipe 42 and the radiation heat exchange plate 41, a connection seat 47 for supporting and connecting the header pipe 42 can be arranged on the back side of the radiation heat exchange plate 41. A support notch 471 adapted to the shape of the header pipe 42 can be arranged on the connection seat 47. Through the cooperation connection between the support notch 471 and the header pipe 42, the connection between the header pipe 42 and the radiation heat exchange plate 41 is realized.

[0091] In the specific implementation of this embodiment, the axial direction of the manifold 42 is consistent with the up-down direction of the indoor unit 10, and the size of the manifold 42 in the up-down direction of the indoor unit 10 is quite large. Therefore, it can be understood that the length of the manifold 42 in its own extending direction is relatively large. Thus, the above-mentioned connection seats 47 can be arranged at intervals in the extending direction of the manifold 42 to achieve a reliable connection between the manifold 42 and the radiation heat exchange plate 41.

[0092] Furthermore, the microchannel assembly 43 can include a plurality of flat tubes 431 arranged at intervals in the up-down direction of the indoor unit 10. The flat tubes 431 extend in the left-right direction of the indoor unit 10, and both ends of the flat tubes 431 are respectively connected to and communicate with the manifold 42. That is to say, a plurality of liquid distribution ports (not shown in the figure) can be provided on the manifold 42, and one liquid distribution port corresponds to one flat tube 431.

[0093] Specifically, the radiation heat exchange channel 6 has a radiation air inlet 61 and a radiation air outlet 62. When the indoor unit 10 is in the radiation heating mode, cold air flows into the radiation heat exchange channel 6 from the radiation air inlet 61, and hot air flows out of the radiation heat exchange channel 6 from the radiation air outlet 62 and then flows into the indoor space to achieve the corresponding heating function.

[0094] It can be understood that the molecular movement speed of hot air is relatively fast, and the distance between molecules is relatively large. Therefore, the volume of hot air is relatively large, the density is relatively small, and the weight is relatively light. Therefore, when the indoor unit 10 is in the radiation heating mode, hot air will flow upward. Thus, in this embodiment, the radiation air inlet 61 is located below the radiation air outlet 62; moreover, when hot air rises, the surrounding heavier air will flow downward, forming convection. Thus, when the indoor unit 10 is in the radiation heating mode, not only can convective heating be achieved, but also radiation heating can be achieved.

[0095] Regarding the setting of the fin group 44, in this embodiment, the fin group 44 is welded to the side of the microchannel assembly 43 facing away from the radiation heat exchange plate 41. That is to say, the radiation heat exchange channel 6 is formed between the fin group 44 and the support member 12.

[0096] In order to make more hot air flow from the radiation air outlet 62 to the indoor environment per unit time, the heat exchange area between the fin group 44 and the microchannel assembly 43 can be increased to increase the contact area between the fin group 44 and cold air. Thus, more cold air will be converted into hot air and discharged from the radiation air outlet 62 per unit time, so as to improve the heat exchange efficiency of the radiation heat exchanger 4.

[0097] Specifically, two methods can be adopted. One is to weld a plurality of fins arranged at intervals along the left-right direction of the indoor unit 10 on the microchannel assembly 43, the extension direction of the fins is consistent with the up-down direction of the indoor unit 10, and a flow channel is formed between two adjacent fins. Such a setting can not only increase the heat exchange area of ​​the fin group 44, but also form a chimney effect, so that hot air can be continuously discharged from the radiation exhaust port 62, and cold air can continuously flow from the radiation air inlet 61 to the radiation heat exchange channel 6, so as to realize the circulation of air.

[0098] Another method is to use an aluminum plate or a copper plate with good heat transfer performance, and form a plurality of fin units 441 protruding toward the side away from the radiation heat exchange plate 41 by bending. The plurality of fin units 441 are arranged at intervals along the left-right direction of the indoor unit 10, and a flow channel 442 extending along the up-and-down direction of the indoor unit 10 is formed between two adjacent fin units 441. In this way, the heat exchange area of ​​the fin group 44 can be increased, and a chimney effect can be formed, so that hot air can be continuously discharged from the radiation exhaust port 62, and cold air can continuously flow from the radiation air inlet 61 to the radiation heat exchange channel 6 to realize the circulation of air.

[0099] In order to improve the assembly and manufacturing efficiency of the radiation heat exchanger 4 , in this embodiment, the latter method mentioned above is adopted for the arrangement of the fin group 44 , that is, the fin unit 441 is formed.

[0100] like Figure 17 As shown, in the vertical direction of the indoor unit 10, the radiation heat exchange plate 41 may occupy a larger size. In this case, the fin group 44 may be formed by bending two aluminum plates or copper plates to form a plurality of fin units, which are then welded together. Here, there is no specific restriction on the number of substrates used in the fin group 44 and the material of the fin group 44.

[0101] For ease of description, in the following introduction, the collecting pipe 42 provided with the refrigerant inlet joint 45 is referred to as a first collecting pipe 42a, and the collecting pipe 42 provided with the refrigerant outlet joint 46 is referred to as a second collecting pipe 42b.

[0102] Specifically, when the indoor unit 10 is in the radiation heating mode, the flow direction of the refrigerant in the radiation heat exchanger 4 should be the piping assembly 7 → refrigerant inlet joint 45 → first collecting pipe 42a → multiple flat tubes 431 → second collecting pipe 42b → refrigerant outlet joint 46 → piping assembly 7.

[0103] In some embodiments, to improve the appearance of the indoor unit 10 provided in this embodiment and to facilitate the formation of the radiative heat exchange channel 6, a second installation groove 121 may be formed on the support member 12, and the bottom of the second installation groove 121 extends towards the bottom of the first installation groove 113; the radiative heat exchanger 4 is disposed in the second installation groove 121 and encloses the radiative heat exchange channel 6 with the groove wall of the second installation groove 121. In this way, not only can the appearance effect of the indoor unit 10 be improved, but also, by forming the second installation groove 121, the flow path of the air flow in the radiative heat exchange channel 6 can be extended, so that the cold air can be heated in the radiative heat exchange channel 6 for a longer time, thereby making the heat exchange effect of the radiative heat exchanger 4 better, and further making the heating effect of the indoor unit 10 provided in this embodiment better.

[0104] The specific formation method of the second installation groove 121, that is, the specific structure of the support member 12, will be described in detail in the following embodiments.

[0105] When the external cold air flows into the radiative heat exchange channel 6 through the radiative air inlet 61, if other dust and other particulate matters are mixed in the external cold air, it will affect the flow of the air flow in the radiative heat exchange channel 6, and further have an adverse effect on the heat exchange effect of the radiative heat exchanger 4. Therefore, in some alternative embodiments, a filter element (not shown in the figure) may be connected between the support member 12 and the radiative heat exchanger 4, and the filter element is disposed at the radiative air inlet 61; a plurality of spaced-apart filter holes are formed on the filter element. It should be noted that the filter element here may be a filter net, and the filter net may be directly welded between the radiative heat exchange plate 41 and the support member 12, or the filter net may be adhered to the bracket by setting a bracket, and the bracket is connected between the radiative heat exchange plate 41 and the support member 12. Here, the specific form of the filter element and the connection relationship between the filter element and the support member 12 and the radiative heat exchange plate 41 are not specifically limited.

[0106] Of course, the indoor unit 10 provided in this embodiment also has a cooling mode and a convective heating mode. In both of these modes, the convective heat exchanger 3 realizes the heat exchange function. Therefore, to improve the heat exchange efficiency of the convective heat exchanger 3, it can also be achieved by increasing the heat exchange area of the convective heat exchanger 3.

[0107] Specifically, the convection heat exchanger 3 has a first end 31 and a second end 32 that are oppositely arranged in the height direction of the indoor unit 10, and the first end 31 is located above the second end 32; the first end 31 is located on the side close to the bottom wall of the first installation groove 113 of the second end 32, and the included angle between the convection heat exchanger 3 and the bottom wall of the first installation groove 113 is an acute angle. That is to say, the convection heat exchanger 3 is inclined and arranged in the installation cavity 13. In this way, compared with the scheme where the distances between the first end 31 and the second end 32 of the convection heat exchanger 3 and the bottom wall of the first installation groove 113 are equal, the contact area between the convection heat exchanger 3 and the air can be increased. Compared with the scheme where the first end 31 and the second end 32 of the convection heat exchanger 3 are oppositely arranged in the front-back direction of the indoor unit 10, the requirement of the current compact internal structure of the indoor unit 10 can be met.

[0108] It can be understood that pipes for the refrigerant to flow through should also be provided inside the convection heat exchanger 3. Here, the structure of the convection heat exchanger 3 will not be specifically introduced. It should be noted that the above refrigerant can be a refrigerant medium. Here, the type of the refrigerant is not specifically limited either.

[0109] When the convection heat exchanger 3 is inclined, for the installation of the convection heat exchanger 3, it should not be possible to achieve only through the connection between the convection heat exchanger 3 and the housing main body 11. Therefore, the housing assembly 1 in this embodiment may further include an installation bracket 14 connected between the housing main body 11 and the support member 12, and at least an inclined surface 141 for abutting and connecting with the convection heat exchanger 3 should be formed on the installation bracket 14, and the extending direction of the inclined surface 141 is the same as the inclined direction of the convection heat exchanger 3. In this way, by connecting the installation bracket 14 between the housing main body 11 and the support member 12, the inclined assembly of the convection heat exchanger 3 can be realized. The structure of the installation bracket 14 will be introduced in detail in the following specific embodiments.

[0110] If the air intake volume of the radiation heat exchange channel 6 can be increased, the amount of hot air discharged from the radiation exhaust port 62 can be increased. When the amount of discharged hot air is large, the rapid drop in the temperature of the indoor environment can be effectively avoided. In this way, the heat exchange efficiency of the radiation heat exchanger 4 and the heating effect of the indoor unit 10 can also be improved. Thus, in some embodiments, the convection heat exchange channel 5 has a convection air intake port 53 and a convection exhaust port 54, and the convection air intake port 53 is adjacently arranged to the radiation air intake port 61. In this way, when the indoor unit 10 is in the radiation heating mode, the gas source entering the radiation heat exchange channel 6 not only comes from the convection of the gas, but also comes from the indoor unit 10 in the convection heating mode. Since a negative pressure is formed at the convection air intake port 53, due to the negative pressure effect, a certain amount of gas input can also be provided to the radiation heat exchange channel 6. In this way, the heat exchange efficiency of the radiation heat exchanger 4 can be improved, and the heating effect of the indoor unit 10 can be improved.

[0111] Whether the indoor unit 10 is in the cooling mode or the convective heating mode, the impact force of the cold air or hot air blown out from the convective exhaust port 54 is relatively strong. If the convective exhaust port 54 faces the front side of the indoor unit 10, it will inevitably cause the user to be directly blown by the cold air or hot air. Therefore, in order to avoid this phenomenon to a certain extent, the convective exhaust port 54 is formed on any one of the enclosing plates 112. That is to say, the convective intake port 53 can be formed on the top enclosing plate 112a, the bottom enclosing plate 112b or the side enclosing plate 112c. In this way, it can avoid the cold air or hot air from directly blowing on the user to a certain extent, so as to improve the comfort of the user and further improve the performance of the indoor unit 10 provided in this embodiment.

[0112] It can be understood that if a large amount of condensed water adheres to the surface of the convective heat exchanger 3, it will not only affect the heat exchange efficiency of the convective heat exchanger 3, but also may damage the surface structure of the convective heat exchanger 3. Therefore, in some alternative embodiments, in order to avoid a large amount of condensed water adhering to the surface of the convective heat exchanger 3 to a certain extent, the condensed water flowing down from the convective heat exchanger 3 can be collected. Thus, the indoor unit 10 provided in this embodiment can also include a water receiving tray 110. The water receiving tray 110 is arranged below the convective heat exchanger 3 and is connected to the housing assembly 1, for example, connected to the mounting bracket 14. In this way, through the setting of the water receiving tray 110, the condensed water adhering to the surface of the convective heat exchanger 3 can be collected, so that the convective heat exchanger 3 can maintain good performance.

[0113] It should be noted that a water receiving groove 1101 is formed in the water receiving tray 110, and the size of the water receiving groove 1101 in the left-right direction of the indoor unit 10 is greater than or equal to that of the convective heat exchanger 3. In this way, most of the condensed water flowing down from the convective heat exchanger 3 can be received by the water receiving tray 110, so that the convective heat exchanger 3 can further maintain good performance.

[0114] In addition, if the water receiving groove 1101 is full of condensed water, it will overflow, and the overflowing condensed water may also damage other modules or components arranged in the installation cavity 13. Therefore, in order to avoid this phenomenon to a certain extent, the indoor unit 10 provided in this embodiment can also include a water pump (not shown in the figure) connected to the water receiving tray 110. Through the water pump, the water in the water receiving tray 110 can be pumped to the outside.

[0115] By observing Figures 1 to 4, It is not difficult to see that the indoor unit 10 provided in this embodiment should stand upright on the ground or a tabletop in the use state. Therefore, on the one hand, in order to improve the stability of the indoor unit 10 during use, and on the other hand, in order to make the housing assembly 1 maintain a good appearance structure. In some alternative embodiments, two spaced-apart support portions 120 are provided at the bottom of the housing assembly 1. Specifically, the two support portions 120 are spaced apart along the left-right direction of the indoor unit 10. In this way, by providing the support portions 120, on the one hand, the stability of the indoor unit 10 during use is improved to prevent the indoor unit 10 from tipping over when subjected to certain external forces; on the other hand, the bottom of the housing assembly 1 can be prevented from being worn to a certain extent, so that the service life of the housing assembly 1 can be extended, and thus the service life of the indoor unit 10 provided in this embodiment can be extended.

[0116] The setting method of the support portion 120 will be introduced in detail in combination with different embodiments.

[0117] For the specific structure of the indoor unit 10, four specific embodiments are provided in this embodiment, which will be introduced one by one below.

[0118] Please refer to Figure 1 , Figure 5 , Figure 9 and Figure 13 As shown, in the first embodiment, one end of the first channel section 51 facing away from the second channel section 52 forms a convective air inlet 53, and one end of the second channel section 52 facing away from the first channel section 51 forms a convective air outlet 54; wherein, the convective air inlet 53 is located below the convective air outlet 54, that is to say, the convective heat exchanger 3 is located on the upstream side of the blower 22; the convective air inlet 53 is formed at the bottom of the housing assembly 1, the convective air outlet 54 is formed on the blower housing 21, and the convective air outlet 54 is arranged facing away from the bottom wall of the first installation groove 113, that is to say, in this embodiment, the convective air outlet 54 is arranged facing the front side of the indoor unit 10.

[0119] In this embodiment, the convective air inlet 53 includes an air inlet opening 531 and a plurality of air inlet holes 532; the air inlet opening 531 is formed by enclosing the bottom end of the support member 12, the bottoms of the two side enclosing plates 112c, and the bottom end enclosing plate 112b, and the air inlet opening 531 is arranged facing the front side of the indoor unit 10; the plurality of air inlet holes 532 are spaced apart and opened on the bottom end enclosing plate 112b, and each air inlet hole 532 is arranged downward.

[0120] It should be noted that by forming the convective air inlet 53 in a combination of the air inlet opening 531 and the plurality of air inlet holes 532, the opening area of the convective air inlet 53 can be increased, so that the air flow rate flowing through the convective air inlet 53 can be increased, and thus the heat exchange performance of the convective heat exchanger 3 can be improved.

[0121] As Figure 5 shown, in this embodiment, the air inlet holes 532 are rectangular holes, and a plurality of air inlet holes 532 are arranged at intervals in the left - right direction of the indoor unit 10 on the bottom end enclosure 112b.

[0122] Since the aperture of the air inlet hole 532 is relatively large and the opening area of the air inlet opening 531 is relatively large, therefore, dust or particulate matter in the outside world may enter the interior of the indoor unit 10 through the air inlet opening 531 and the air inlet holes 532. Thus, in some alternative embodiments, a grille 130 is connected to the bottom of the housing main body 11; one end of the grille 130 is connected to the bottom end of the support member 12, the other end of the grille 130 is connected to the bottom end enclosure 112b, and the grille 130 covers the air inlet opening 531 and a plurality of air inlet holes 532. That is to say, a part of the structure of the grille 130 is located below the bottom end enclosure 112b. In this way, through the setting of the grille 130, it is possible to avoid to a certain extent larger particulate matter or dust from flowing into the interior of the indoor unit 10 after flowing through the convective air inlet 53, and in this way, the indoor unit 10 can have better performance.

[0123] In order to introduce the structure of the grille 130 in detail, since there is a connection relationship between the grille 130 and the support member 12, therefore, here, first introduce the structure of the support member 12 in this embodiment, as Figure 5 shown, in this embodiment, the support member 12 includes a support plate 122 and a plurality of extension plates 123 connected to the periphery of the support plate 122. The plurality of extension plates 123 and the support plate 122 enclose a second installation groove 121. The bottom end of the extension plate 123 at the bottom forms a downward - extending flange 124 by bending, and one end of the grille 130 is detachably connected to the flange 124.

[0124] Specifically, the grille 130 includes a first protection part 1301 and a second protection part 1302. The top end of the first protection part 1301 is detachably connected to the flange 124 through a threaded fastener, and the left and right sides of the first protection part 1301 are respectively detachably connected to the two side enclosures 112c through threaded fasteners. The first protection part 1301 extends in the up - down direction of the indoor unit 10 and covers the air inlet opening 531. The second protection part 1302 is connected to the bottom end of the first protection part 1301 and extends in the front - back direction of the indoor unit 10. The second protection part 1302 covers a plurality of air inlet holes 532, and the second protection part 1302 is connected to the bottom end of the bottom end enclosure 112b. Two support parts 120 are connected to the left and right sides of the bottom end of the second protection part 1302. Here, the connection method between the grille 130 and the housing main body 11 is not specifically limited.

[0125] In some specific embodiments, a weight-reducing groove 1201 with an opening downward is formed at the bottom of the supporting portion 120. Through the setting of the weight-reducing groove 1201, on the one hand, the weight of the grille 130 can be reduced, and on the other hand, it is convenient to assemble the grille 130 and the housing assembly 1.

[0126] Since the blower 22 and the convection heat exchanger 3 do not work when the indoor unit 10 is in the cooling mode and the convection heating mode, therefore, in the cooling mode and the convection heating mode, the convection exhaust port 54 does not need to be open. That is to say, in these two modes, the convection exhaust port 54 can be in a closed state. In this way, it can to a certain extent prevent external dust and the like from flowing into the interior of the indoor unit 10 through the convection exhaust port 54. Therefore, in this embodiment, the indoor unit 10 further includes a deflector 140 rotatably connected to the blower housing 21. The deflector 140 is disposed at the convection exhaust port 54 to open or close the convection exhaust port 54; when the indoor unit 10 is in the cooling mode and the convection heating mode, the convection exhaust port 54 is open; when the indoor unit 10 is in the radiant heating mode, the convection exhaust port 54 is closed.

[0127] It should be noted that the deflector 140 can be driven to rotate by a driving mechanism such as a motor to open or close the convection exhaust port 54. Here, the specific driving form of the deflector 140 is not limited.

[0128] In addition, since the structure of the mounting bracket 14 is the same as that of the mounting bracket 14 in the next embodiment, it will be described in detail in the next embodiment.

[0129] Please refer to Figure 2 、 Figure 6 、 Figure 10 and Figure 14 As shown, in the second embodiment, one end of the second channel section 52 facing away from the first channel section 51 is formed as a convection air inlet 53. The convection air inlet 53 is disposed on the side facing away from the bottom wall of the first mounting groove 113, that is, the convection air inlet 53 faces the front side of the indoor unit 10; one end of the first channel section 51 facing away from the second channel section 52 is formed as a convection exhaust port 54. The convection exhaust port 54 is formed on the top end plate 112a and is arranged upward. That is to say, the blower 22 is located on the upstream side of the convection heat exchanger 3.

[0130] Furthermore, the blower housing 21 extends from bottom to top; an inclined opening 211 is formed at the top of the blower housing 21. The convection heat exchanger 3 is installed at the inclined opening 211.

[0131] The mounting bracket 14 includes two mounting plates 142 which are arranged at intervals in the left - right direction of the indoor unit 10. The thickness direction of the mounting plate 142 is the same as the left - right direction of the indoor unit 10. The tops of the two mounting plates 142 are connected by a connecting plate 143. Among them, fitting grooves 1421 which cooperate with the left and right ends of the convection heat exchanger 3 are respectively formed on the two mounting plates 142. And the fitting groove 1421 has a first groove wall 1422 and a second groove wall 1423 which are perpendicular to each other. The first groove wall 1422 is formed on the inclined surface 141 and the first groove wall 1422 cooperates with the front end face of the convection heat exchanger 3, and the second groove wall 1423 cooperates with the top end face of the convection heat exchanger 3.

[0132] It should be noted that in this embodiment, the mounting bracket 14 can cooperate with the inclined opening 211 and is detachably connected to the blower housing 21. Here, the assembly method of the mounting bracket 14 is not specifically limited.

[0133] Since the convection air inlet 53 is formed on the blower housing 21, an air inlet opening 531 communicating with the convection air inlet 53 should be formed on the housing assembly 1. In this way, when the indoor unit 10 is in the radiant heating mode, the air flow can flow through the radiant air inlet 61 and then into the radiant heat exchange channel 6. Specifically, an air inlet opening 531 communicating with the convection air inlet 53 is formed between the bottom end enclosure 112b and the bottom end of the support member 12. Specifically, the air inlet opening 531 is enclosed by the low - end enclosure 112b, two side enclosures 112c and the bottom end of the support member 12. Similarly, in order to avoid dust and the like in the outside world from entering the interior of the indoor unit 10 through the air inlet opening 531 to a certain extent, in this embodiment, a grille 130 is connected between the bottom end enclosure 112b and the support member 12, and the grille 130 covers the air inlet opening 531.

[0134] Furthermore, two support portions 120 are arranged at the bottom end of the grille 130, and the support portion 120 is detachably connected to the bottom end enclosure 112b. The specific structure of the support portion 120 is the same as that of the support portion 120 in the above - mentioned embodiment and will not be elaborated here.

[0135] It should be noted that in this embodiment, the difference between the support member 12 and the above - mentioned embodiment is that in this embodiment, the support member 12 is not provided with the above - mentioned flanging 124. Here, the structure of the support member 12 is not specifically limited.

[0136] Please refer to Figure 3 、 Figure 7 、 Figure 11 and Figure 15, in the third embodiment, one end of the first channel section 51 facing away from the second channel section 52 is formed as a convection air inlet 53, and one end of the second channel section 52 facing away from the first channel section 51 is formed as a convection air outlet 54; the convection air inlet 53 is located above the convection air outlet 54, that is to say, the convection heat exchanger 3 is located on the upstream side of the blower 22; the convection air inlet 53 is formed on the top enclosure 112a and is arranged upward; the convection air outlet 54 is formed on the blower housing 21 and is arranged toward the side away from the bottom wall of the first installation groove 113, that is, the convection air outlet 54 is arranged toward the front side of the indoor unit 10.

[0137] In order to prevent more dust or particulate matter from entering the indoor unit 10 through the convection air inlet 53, in this embodiment, the convection air inlet 53 includes a plurality of air inlet holes 532, and the plurality of air inlet holes 532 are arranged at intervals on the top enclosure 112a.

[0138] Specifically, the plurality of air inlet holes 532 may include multiple groups of air inlet hole groups arranged at intervals in the front-back direction of the indoor unit 10, and each air inlet hole group includes a plurality of air inlet holes 532 arranged at intervals in the left-right direction of the indoor unit 10. As Figure 3 shown, in this embodiment, the air inlet hole 532 may be a rectangular hole. It should be noted that in some other embodiments, the air inlet hole 532 may also be other shapes, and here, the shape of the air inlet hole 532 is not specifically limited.

[0139] Similarly, in this embodiment, a deflector 140 is rotatably connected to the blower housing 21. The functions and driving methods of the deflector 140 have been introduced in the above embodiments, and will not be elaborated here.

[0140] In this embodiment, for the mounting bracket 14, different from the foregoing, in this embodiment, the mounting bracket 14 further includes two limiting plates 144 abutted against the back side of the convection heat exchanger 3, and the assembly groove 1421 is formed by enclosing the mounting plate 142 and the limiting plates 144. Here, the structure of the mounting bracket 14 is not specifically limited.

[0141] Furthermore, in this embodiment, since there is no need to form a convection air inlet 53 or a convection air outlet 54 on the front of the top of the indoor unit 10, therefore, the difference between the structure of the support member 12 in this embodiment and the support member 12 in the second embodiment is that the top end of the extension plate 123 located at the top is further bent to form a first compensation plate 125, that is to say, in this embodiment, there are no other air inlets and air outlets at the position above the radiation exhaust port 62 on the front of the indoor unit 10.

[0142] In addition, it should be noted that in this embodiment, two support portions 120 are formed at the bottom ends of two side wall panels 112c, and the dimension of the support portion 120 in the left-right direction of the indoor unit 10 is larger than the dimension of the side wall panel 112c in this direction.

[0143] Please refer to Figure 4 , Figure 8 , Figure 12 and Figure 16 , in the fourth embodiment, the first channel section 51 includes an intake channel section 511 and an exhaust channel section 512. The intake channel section 511 is located upstream of the second channel section 52, and the exhaust channel section 512 is located downstream of the second channel section 52; one end of the intake channel section 511 facing away from the second channel section 52 forms a convective intake port 53, and the convective intake port 53 is arranged upward; a convective exhaust port 54 is formed on the channel wall of the exhaust channel section 512, and the convective exhaust port 54 is arranged towards the side of the indoor unit 10, that is, the convective exhaust port 54 is arranged towards the left and right sides of the indoor unit 10.

[0144] Specifically, in order to improve the heat exchange effect of the convective heat exchanger 3, convective exhaust ports 54 are formed on both side wall panels 112c. In this way, not only can the convective efficiency of the gas be improved, but also when the indoor unit 10 is in the cooling mode or the convective heating mode, the air flow blown out from the convective exhaust port 54 can be prevented from directly blowing on the user.

[0145] Of course, in order to prevent external dust or particulate matter from flowing into the indoor unit 10 through the convective intake port 53 or the convective exhaust port 54, in this embodiment, the convective intake port 53 includes a plurality of intake holes 532, and the plurality of intake holes 532 are arranged at intervals on the top end panel 112a; the convective exhaust port 54 includes a plurality of exhaust holes 541, and the plurality of exhaust holes 541 are arranged at intervals on the corresponding side wall panel 112c.

[0146] Among them, the arrangement manner of the plurality of intake holes 532 can refer to the arrangement manner in the above-mentioned third embodiment; and the plurality of exhaust holes 541 on one side wall panel 112c can be arranged in multiple groups at intervals in the height direction of the indoor unit 10, and each group of exhaust holes 541 includes a plurality of exhaust holes 541 arranged at intervals in the front-rear direction of the indoor unit 10, and the shape of the exhaust holes 541 can also be the same as the shape of the intake holes 532. Here, the arrangement manner of the plurality of intake holes 532 and the plurality of exhaust holes 541 in this embodiment, the shape of the intake holes 532, and the shape of the exhaust holes 541 are not specifically limited.

[0147] Further, in this embodiment, since there is no need to form a convection air inlet 53 or a convection air outlet 54 on the front of the indoor unit 10, the structure of the support member 12 in this embodiment is different from that of the support member 12 in the third embodiment in that the bottom end of the extension plate 123 at the bottom is further bent to form a second supplementary plate 126. That is to say, in this embodiment, on the front of the indoor unit 10, there are no other air inlets and air outlets above the radiation air outlet 62 and below the radiation air inlet 61.

[0148] It should be noted that the structure of the mounting bracket 14 in this embodiment can refer to the structure of the mounting bracket 14 in the above-mentioned second embodiment. Here, the structure of the mounting bracket 14 is not specifically limited.

[0149] Please refer to Figures 20 to 22 , Figure 20 which is the refrigerant flow diagram of the heating and ventilation equipment provided by the embodiment of the present application in the cooling mode, Figure 21 which is the refrigerant flow diagram of the heating and ventilation equipment provided by the embodiment of the present application in the convection heating mode, Figure 22 which is the refrigerant flow diagram of the heating and ventilation equipment provided by the embodiment of the present application in the radiation heating mode. This embodiment also provides a heating and ventilation equipment, including an outdoor unit 20 and the indoor unit 10 in the above-mentioned embodiment. Among them, the outdoor unit 20 includes a compressor 201 and an outdoor heat exchanger 202 connected together. The compressor 201, the outdoor heat exchanger 202 and the indoor unit 10 are all connected by a piping assembly 7. In order to regulate the flow rate of the refrigerant, the indoor unit 10 may further include a throttle valve 150.

[0150] As Figure 20 shown, in the cooling mode, the refrigerant flow direction is compressor 201 → outdoor heat exchanger 202 → throttle valve 150 → convection heat exchanger 3 → first regulating valve 8 → compressor 201;

[0151] As Figure 21 shown, in the convection heating mode, the refrigerant flow direction is compressor 201 → first regulating valve 8 → convection heat exchanger 3 → throttle valve 150 → outdoor heat exchanger 202 → compressor 201;

[0152] As Figure 22 shown, in the radiation heating mode, the refrigerant flow direction is compressor 201 → second regulating valve 9 → radiation heat exchanger 4 → throttle valve 150 → outdoor heat exchanger 202 → compressor 201.

[0153] It should be noted that the heating and ventilation equipment provided in this embodiment may further include other modules or components. Here, they will not be introduced one by one.

Claims

1. An indoor unit, characterized in that: include: A housing assembly having a mounting cavity formed therein; A fan assembly is arranged in the installation cavity, the fan assembly comprises a fan casing and a fan connected together, the fan casing is connected with the housing assembly to enclose a convection heat exchange channel, and the fan is located in the convection heat exchange channel; A convection heat exchanger is disposed in the convection heat exchange channel and is arranged at intervals with the fan in the flow direction of the airflow; as well as A radiation heat exchanger is installed in the shell assembly and is arranged in parallel with the convection heat exchanger. The radiation heat exchanger is located outside the installation cavity. The radiation heat exchanger and the shell assembly enclose a radiation heat exchange channel.

2. The indoor unit according to claim 1, characterized in that: The housing assembly includes a housing body and a support member, the housing body is formed with a first mounting groove, the support member is connected to the housing body and blocks the notch of the first mounting groove, and the support member and the groove wall of the first mounting groove are enclosed to form the mounting cavity; The countercurrent heat exchanger and the fan assembly are both connected to the shell body, and the radiation heat exchanger is installed on the support member.

3. The indoor unit according to claim 2, characterized in that: The counter-flow heat exchanger has a first end and a second end which are arranged opposite to each other in the height direction of the indoor unit, and the first end is located above the second end; The first end is located on a side of the second end close to the bottom wall of the first installation slot, and an angle between the convection heat exchanger and the bottom wall of the first installation slot is an acute angle.

4. The indoor unit according to claim 2, characterized in that: A second mounting groove is formed on the support member, and the groove bottom of the second mounting groove extends toward the groove bottom of the first mounting groove; The radiation heat exchanger is arranged in the second installation groove, and is enclosed with the groove wall of the second installation groove to form the radiation heat exchange channel; The radiation heat exchange channel has a radiation air inlet and a radiation air outlet, and the radiation air inlet is located below the radiation air outlet.

5. The indoor unit according to claim 4, characterized in that: A filter is connected between the support and the radiation heat exchanger, and the filter is arranged at the radiation air inlet; The filter element is formed with a plurality of filter holes distributed at intervals.

6. The indoor unit according to claim 4, characterized in that: The convection heat exchange channel has a convection air inlet and a convection air outlet, and the convection air inlet is arranged adjacent to the radiation air inlet.

7. The indoor unit according to claim 4, characterized in that: The convection heat exchange channel has a convection air inlet and a convection air outlet; The shell body includes a back plate and a plurality of enclosure plates arranged around the back plate, wherein the plurality of enclosure plates and the back plate are combined to form the first mounting groove; Wherein, the convection exhaust port is formed on any of the enclosures.

8. The indoor unit according to any one of claims 2 to 5, characterized in that: The convection heat exchange channel comprises a first channel section and a second channel section which are connected, the first channel section is constructed by the shell assembly, and the second channel section is constructed by the fan casing; Wherein, the countercurrent heat exchanger is located in the first channel section, and the fan is located in the second channel section.

9. The indoor unit according to claim 8, characterized in that: The shell body includes a back plate and a plurality of enclosure plates arranged around the back plate, and the plurality of enclosure plates and the back plate are combined to form the first mounting groove.

10. The indoor unit according to claim 9, characterized in that: The convection heat exchange channel has a convection air inlet and a convection air outlet; One end of the first channel section facing away from the second channel section is formed as the convection air inlet, and one end of the second channel section facing away from the first channel section is formed as the convection air outlet.

11. The indoor unit according to claim 10, characterized in that: The convection air inlet is located below the convection air outlet; The convection air inlet is formed at the bottom of the housing assembly, the convection air outlet is formed on the fan housing, and the convection air outlet is arranged toward a side of the bottom wall of the first mounting slot that is away from the first mounting slot.

12. The indoor unit according to claim 11, characterized in that: The convection air inlet includes an air inlet opening and a plurality of air inlet holes; The air inlet opening is formed by the bottom end of the support member and the bottom of the shell body, and the air inlet opening is arranged toward a side away from the bottom of the first installation groove; The plurality of enclosures include a bottom enclosure forming the bottom end of the shell body, and the plurality of air inlet holes are arranged on the bottom enclosure at intervals, and each of the air inlet holes is arranged downward.

13. The indoor unit according to claim 12, characterized in that: The bottom of the shell body is connected with a grid; One end of the grille is connected to the bottom end of the support member, the other end of the grille is connected to the bottom end enclosure, and the grille covers the air intake opening and the plurality of air intake holes.

14. The indoor unit according to claim 10, characterized in that: The convection air inlet is located above the convection air outlet; The plurality of enclosures include a top enclosure forming the top of the shell body, the convection air inlet is formed on the top enclosure and is arranged upward; The convection exhaust port is formed on the fan housing and is arranged toward a side of the bottom wall of the first installation slot that is away from the first installation slot.

15. The indoor unit according to claim 14, characterized in that: The convection air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged at intervals on the top end enclosure.

16. The indoor unit according to any one of claims 10 to 15, characterized in that: It also includes a guide member rotatably connected to the fan housing, and the guide member is arranged at the convection exhaust port to open or close the convection exhaust port.

17. The indoor unit according to claim 9, characterized in that: The convection heat exchange channel has a convection air inlet and a convection air outlet; One end of the second channel section facing away from the first channel section is formed as the convection air inlet, and the convection air inlet is arranged toward a side of the groove bottom wall facing away from the first installation groove; One end of the first channel section facing away from the second channel section is formed as the convection exhaust port, the plurality of enclosures include a top enclosure forming the top of the shell body, and the convection exhaust port is formed on the top enclosure and arranged upward.

18. The indoor unit according to claim 17, characterized in that: The fan housing extends from bottom to top; The top of the fan housing is formed with an inclined opening, and the countercurrent heat exchanger is installed at the inclined opening.

19. The indoor unit according to claim 17, characterized in that: The plurality of enclosures include a bottom enclosure disposed opposite to the top enclosure, and an air intake opening communicating with the convection air intake port is formed between the bottom enclosure and the bottom end of the support member; A grille is connected between the bottom end enclosure and the support member, and the grille covers the air intake opening.

20. The indoor unit according to claim 9, characterized in that: The convection heat exchange channel has a convection air inlet and a convection air outlet; The first channel section includes an intake channel section and an exhaust channel section, the intake channel section is located upstream of the second channel section, and the exhaust channel section is located downstream of the second channel section; One end of the air inlet channel section facing away from the second channel section forms the convection air inlet, and the convection air inlet is arranged upward; The convection exhaust port is formed on the channel wall of the exhaust channel section, and the convection exhaust port is arranged toward the side of the indoor unit.

21. The indoor unit according to claim 20, characterized in that: The plurality of enclosures include a top enclosure and two side enclosures, wherein the top enclosure forms the top end of the shell body, and the two side enclosures are connected to opposite sides of the top enclosure; The convection exhaust port is formed on both side panels.

22. The indoor unit according to claim 21, characterized in that: The convection air inlet comprises a plurality of air inlet holes, and the plurality of air inlet holes are arranged at intervals on the top enclosure; and / or, The convection exhaust port includes a plurality of exhaust holes, and the plurality of exhaust holes are arranged at intervals on the corresponding side panels.

23. The indoor unit according to any one of claims 1 to 7, 9 to 15, and 17 to 22, characterized in that: The device also includes a first regulating valve and a second regulating valve, wherein the first regulating valve is connected to the countercurrent heat exchanger, and the second regulating valve is connected to the radiation heat exchanger.

24. The indoor unit according to any one of claims 1 to 7, 9 to 15, and 17 to 22, characterized in that: Also includes a water collection box; The water receiving box is arranged below the countercurrent heat exchanger, and the water receiving box is connected to the shell assembly.

25. The indoor unit according to any one of claims 1 to 7, 9 to 15, and 17 to 22, characterized in that: The bottom of the shell assembly is provided with two support parts which are arranged at intervals.

26. A HVAC equipment, characterized in that: The indoor unit comprises the indoor unit as claimed in any one of claims 1 to 25.

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