Outdoor unit and cold and hot water unit
By stamping support protrusions on the bottom wall of the chassis to cooperate with the first support foot, the problems of complex mold design and poor condensate flow in the prior art are solved, thereby simplifying production, improving condensate flow, and reducing production costs.
Patent Information
- Application Number
- CN202520525673.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-24
AI Technical Summary
In the existing technology, the outdoor unit chassis mold design of hot and cold water units is complex, difficult to process, and has poor versatility, resulting in high production costs and poor condensate flow.
A support protrusion is stamped out on the bottom wall of the chassis. The support protrusion cooperates with the first support foot. The chassis is made using existing molds, avoiding the need to make an additional large-area mating platform inside the chassis. The support protrusion separates the first support foot and the bottom wall of the chassis to form a flow interval.
It simplifies the production process, reduces production costs, and improves the flowability of condensate.
Smart Images
Figure CN223869621U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of heat pump equipment, in particular to an outdoor unit and a hot and cold water unit. BACKGROUND
[0002] An outdoor unit of a hot and cold water unit comprises a chassis and a double-pipe heat exchanger assembly, the double-pipe heat exchanger assembly comprises a double-pipe heat exchanger and a mounting rack assembled together. The mounting rack has a plurality of supporting legs, the bottom surfaces of the plurality of supporting legs are all below the double-pipe heat exchanger and are not in the same plane, that is, when the axis of the double-pipe heat exchanger is vertical (in the up-down direction), the bottom surfaces of the plurality of supporting legs have different height differences from the horizontal plane. In order to ensure that the inner bottom surface of the chassis cooperates with the plurality of supporting legs of the mounting rack, it is necessary to additionally manufacture a plurality of large-area cooperation tables of different heights on the inner bottom wall of the chassis, and the bottom surfaces of the supporting legs and the table surfaces of the cooperation tables are cooperated in the form of surface contact. This can only redesign and manufacture a mold for producing the chassis, and the mold for producing the chassis redesigned and manufactured has the problems of complex structure, large processing difficulty, poor universality and the like, which can significantly increase the production cost of the outdoor unit. CONTENT OF THE UTILITY MODEL
[0003] The outdoor unit provided by the embodiments of the present application comprises a chassis, a bottom wall of the chassis is provided with a supporting protrusion, a double-pipe heat exchanger assembly comprises a double-pipe heat exchanger and a mounting rack assembled together, the mounting rack is provided with a first supporting leg, and the first supporting leg is arranged in the supporting protrusion and forms a water flow interval with the bottom wall of the chassis.
[0004] In some example embodiments, the bottom wall of the chassis is further provided with a cooperation surface, and the mounting rack is further provided with a second supporting leg, and the second supporting leg is arranged in the cooperation surface.
[0005] In some example embodiments, the supporting protrusion comprises a plurality of groups, the cooperation surface and the plurality of groups of supporting protrusions are dispersedly arranged in the circumferential direction of the chassis, the first supporting leg comprises a plurality of first supporting legs, each of the plurality of first supporting legs is arranged in one of the plurality of groups of supporting protrusions, and the angle between the axis of the double-pipe heat exchanger and the inner bottom surface of the chassis is 85 degrees to 95 degrees. In some example embodiments, the supporting protrusion is a convex bump formed by stamping.
[0006] In some example embodiments, the chassis is provided with a first positioning part and a first connecting part, the first supporting leg is provided with a first positioning cooperation part and a first connecting cooperation part, the first positioning part cooperates with the first positioning cooperation part, and the first connecting part is fixedly connected with the first connecting cooperation part.
[0007] In some exemplary embodiments, the first positioning part is located on the inner side of the chassis, and the first positioning mating part abuts against the first positioning part on the inner side of the chassis.
[0008] In some exemplary embodiments, the first positioning part is located on the bottom wall of the chassis, and the first positioning mating part is inserted into the first positioning part facing the inner bottom surface of the chassis.
[0009] In some exemplary embodiments, the mounting bracket is further provided with a second connecting mating part and a protruding second positioning mating part. The second connecting mating part and the second positioning mating part are located outside the area enclosed by the shell-and-tube heat exchanger. The side wall of the chassis is provided with a second connecting part and a second positioning part. The second positioning part is located at one end of the side wall of the chassis away from the bottom wall of the chassis. The second positioning mating part is inserted into the second positioning part facing the inner bottom surface of the chassis. The second connecting part is fixedly connected to the second connecting mating part.
[0010] In some exemplary embodiments, the shell-and-tube heat exchanger is provided with a first interface, and the mounting bracket is further provided with a third connecting mating part, a fourth connecting mating part, and a third positioning part. The first interface, the third connecting mating part, the fourth connecting mating part, and the third positioning part are all located inside the area enclosed by the shell-and-tube heat exchanger. The outdoor unit further includes: a liquid storage tank located inside the area enclosed by the shell-and-tube heat exchanger, the liquid storage tank being provided with a second interface and a third connecting part, the first interface being located between the second interface and the chassis and being plugged into and communicating with the second interface, the third connecting part being fixedly connected to the third connecting mating part; and a gas-liquid separator located inside the area enclosed by the shell-and-tube heat exchanger, the gas-liquid separator being provided with a third positioning mating part and a fourth connecting part, the third positioning mating part being plugged into the third positioning part facing the inner bottom surface of the chassis, and the fourth connecting part being fixedly connected to the fourth connecting mating part.
[0011] In some exemplary embodiments, one of the third positioning part and the third positioning mating part is a rib and the other is a socket, and the rib and the socket are interference-fitted.
[0012] This application also provides a hot and cold water unit, including the outdoor unit described in any of the above embodiments.
[0013] The technical solution provided in this application involves installing a punch on an existing chassis manufacturing mold. The chassis is then manufactured using this existing mold with the punch installed. The punch presses out support protrusions of a specific height at corresponding positions on the bottom wall of the chassis. The chassis mates with the first support leg through these support protrusions. Different punches can be used to create support protrusions of different heights. This solution is simple to operate and eliminates the need to additionally create a large mating platform on the inner bottom wall of the chassis for different heights to mate with the mounting bracket. Therefore, the chassis does not require re-molding, effectively reducing the production cost of the outdoor unit. Furthermore, the support protrusions separate the first support leg from the bottom wall of the chassis, creating a water flow gap between them. This allows condensate on the chassis to flow along the water flow gap, resulting in better condensate flow.
[0014] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description
[0015] The accompanying drawings are provided to further illustrate the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solution of this utility model and do not constitute a limitation on the technical solution of this utility model.
[0016] Figure 1 A three-dimensional structural diagram of the outdoor unit from one perspective, provided for some embodiments of this application;
[0017] Figure 2 for Figure 1 A three-dimensional structural diagram of the outdoor unit from another perspective;
[0018] Figure 3 for Figure 2 A magnified structural diagram of part A in the diagram;
[0019] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part B in the diagram;
[0020] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part C in the diagram;
[0021] Figure 6 for Figure 2 A schematic diagram of the structure after the middle chassis and the second chassis are assembled;
[0022] Figure 7 for Figure 6 A schematic diagram of the enlarged structure of part D in the diagram;
[0023] Figure 8 for Figure 6 A magnified structural diagram of part E in the diagram;
[0024] Figure 9 for Figure 6 A schematic diagram of the enlarged structure of part F in the diagram;
[0025] Figure 10 for Figure 2 A three-dimensional structural diagram of the shell-and-tube heat exchanger assembly from one perspective;
[0026] Figure 11 for Figure 2 A three-dimensional structural diagram of the shell-and-tube heat exchanger assembly from another perspective;
[0027] Figure 12 for Figure 2 A cross-sectional view of the shell-and-tube heat exchanger assembly.
[0028] The attached diagram lists the components represented by each number as follows:
[0029] 100 Chassis, 110 Support Protrusion, 120 Mating Surface, 131 First Positioning Part, 132 First Connecting Part, 141 Second Positioning Part, 142 Second Connecting Part, 151 Second Connecting Part, 152 Second Positioning Part, 22 Mounting Bracket, 210 First Mounting Plate, 211 First Supporting Leg, 220 Second Mounting Plate, 221 Second Supporting Leg, 230 Third Mounting Plate, 231 Second Supporting Leg, 232 Third Connecting Part, 233 Fourth Connecting Part, 234 Third Positioning Part, 240 Fourth Mounting Plate, 241 Second Positioning Part, 242 Second Connecting Part, 250 Shell-and-Tube Heat Exchanger, 251 First Interface, 252 Inlet, 253 Outlet, 300 Liquid Storage Tank, 310 Second Interface, 320 Third Connecting Part, 400 Gas-Liquid Separator, 410 Third Positioning Part, 420 Fourth connecting part, 500 second chassis. Detailed Implementation
[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.
[0031] The outdoor unit provided in the embodiments of this application, such as Figures 1 to 12 As shown, it includes: a chassis 100, the bottom wall of which is provided with a support protrusion 110 (e.g., Figures 6 to 9(As shown); a shell-and-tube heat exchanger assembly, comprising a shell-and-tube heat exchanger 250 assembled together and a mounting bracket 22, the mounting bracket 22 having a first support foot, the shell-and-tube heat exchanger 250 being located above the chassis 100, the first support foot being located between the shell-and-tube heat exchanger 250 and the bottom wall of the chassis 100, the first support foot being positioned downwards on the top of the support protrusion 110 and forming a water flow gap between it and the bottom wall of the chassis 100 (e.g. Figures 2 to 4 (As shown).
[0032] A punch is installed on an existing chassis manufacturing mold, and the chassis 100 is manufactured using the existing chassis manufacturing mold with the punch installed. The punch presses support protrusions 110 of a specific height at corresponding positions on the bottom wall of the chassis 100. The chassis 100 mates with the first support foot through the support protrusions 110. Support protrusions 110 of different heights can be punched by changing different punches. This solution is simple to operate and does not require the additional fabrication of a mating platform (with a larger surface area for different heights to mate with the mounting bracket 22) on the inner bottom wall of the chassis 100. Therefore, the chassis 100 does not need to be re-molded, which can effectively reduce the production cost of the outdoor unit. In addition, the support protrusions 110 separate the first support foot and the bottom wall of the chassis 100, so that a water flow interval is formed between the first support foot and the bottom wall of the chassis 100. In this way, the condensate on the chassis 100 can flow along the water flow interval, so the flow of condensate on the chassis 100 is better.
[0033] In some examples, such as Figure 1 , Figure 2 , Figure 6 and Figure 10 As shown, the bottom wall of the chassis 100 is also provided with a mating surface 120, and the mounting bracket 22 is also provided with a second support foot 221, which is placed on the mating surface 120.
[0034] The positions of the first support foot and the second support foot 221 on the inner bottom surface of the chassis 100 are roughly coplanar. Compared with the first support foot, the bottom surface of the second support foot 221 is located below the bottom surface of the first support foot. Since the bottom surface of the second support foot 221 is the lowest surface of the mounting bracket 22, the mating surface 120 on the bottom wall of the chassis 100 can directly adopt the original structure on the bottom wall of the chassis 100 corresponding to the position of the mating surface 120, without the need to modify the structure at this position, so that the original structure on the chassis 100 corresponding to the position of the mating surface 120 can contact the bottom surface of the second support foot 221.
[0035] In some embodiments, such as Figures 6 to 10As shown, the support protrusions 110 include multiple sets, and the mating surface 120 and the multiple sets of support protrusions 110 are distributed circumferentially around the chassis 100. The first support foot includes multiple sets, and the multiple first support feet are placed one-to-one with the multiple sets of support protrusions 110. The angle between the axis of the shell-and-tube heat exchanger 250 and the inner bottom surface of the chassis 100 is 85 degrees to 95 degrees (the angle between the axis of the shell-and-tube heat exchanger 250 and the inner bottom surface of the chassis 100 is usually designed to be 90 degrees, but due to manufacturing errors and installation errors, the angle between the axis of the shell-and-tube heat exchanger 250 and the inner bottom surface of the chassis 100 is generally in the range of 85 degrees to 95 degrees). The height of the multiple sets of support protrusions 110 on the inner bottom surface of the chassis 100 is not necessarily the same. The specific situation is determined based on the distance between the bottom surface of the multiple first support feet and the bottom wall of the chassis 100. Ultimately, it is ensured that the bottom surface of the second support foot 221 is placed on the mating surface 120, and the multiple first support feet are placed one-to-one on the multiple sets of support protrusions 110. The angle between the axis of the shell heat exchanger 250 and the inner bottom surface of the chassis 100 is approximately 90 degrees.
[0036] It can be, such as Figures 6 to 10 As shown, the multiple sets of support protrusions 110 are in two groups, and the multiple first support legs are in two groups; or the multiple sets of support protrusions 110 are in three groups, and the multiple first support legs are in three groups; or the multiple sets of support protrusions 110 are in four groups, and the multiple first support legs are in four groups, etc.; all of the above can achieve the purpose of this application, and their purpose has not departed from the design concept of this utility model, so they will not be elaborated here, and all should fall within the protection scope of this application.
[0037] In some embodiments, such as Figures 6 to 9 As shown, the support protrusion 110 is a concave-convex bulge formed by pressing from bottom to top on the bottom wall of the chassis 100. The top of the bulge is in point contact or small-area contact with the bottom surface of the first support foot.
[0038] In some examples, such as Figures 2 to 4 As shown, the chassis 100 is provided with a first positioning part and a first connecting part, and the first support foot is provided with a first positioning mating part and a first connecting mating part. The first positioning part and the first positioning mating part cooperate to realize the first support foot being pre-positioned on the chassis 100. The first connecting part and the first connecting mating part are fixedly connected to realize the first support foot being fixedly connected to the chassis 100.
[0039] In some embodiments, such as Figures 2 to 4 , Figures 6 to 9As shown, the first support foot has two (hereinafter referred to as the first first support foot 211 and the second first support foot 231), and the chassis 100 is provided with two first positioning parts (hereinafter referred to as the first first positioning part 131 and the second first positioning part 141) and two first connecting parts (hereinafter referred to as the first first connecting part 132 and the second first connecting part 142). The first first positioning part 131 is located on the inner side of the chassis 100, the second first positioning part 141 is located on the bottom wall of the chassis 100, and the first first connecting part 132 and the second first connecting part 142 are both located on the bottom wall of the chassis 100.
[0040] The first support leg 211 moves towards the inner side of the chassis 100, so that the first positioning mating part of the first support leg 211 abuts against the first positioning part 131 of the chassis 100. Then, the first positioning mating part of the second support leg 231 is inserted into the second positioning part 141 of the chassis 100, so that the two first support legs are pre-positioned on the chassis 100. At this time, the second support leg 221 is placed on the mating surface 120. Then, the first connecting mating part of the first support leg 211 is fixedly connected to the first connecting part 132, and the first connecting mating part of the second support leg 231 is fixedly connected to the second connecting part 142, so that the two first support legs are fixedly connected to the chassis 100.
[0041] In one embodiment, such as Figures 1 to 4 , Figure 10 As shown, the second support foot 221 is located behind the first support foot 211, the second support foot 231 is located to the right rear of the first support foot 211, the first positioning part 131 is located on the front side wall of the chassis 100, the second positioning part 141 is located on the bottom wall of the chassis 100 and to the right rear of the first positioning part 131, and the mating surface 120 is located on the bottom wall of the chassis 100 and behind the first positioning part 131.
[0042] In some examples, such as Figure 2 , Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, the mounting bracket 22 is also provided with a second connecting mating part 242 and a protruding second positioning mating part 241. The second connecting mating part 242 and the second positioning mating part 241 are located outside the area enclosed by the shell-and-tube heat exchanger 250. The side wall of the chassis 100 is provided with a second connecting part 151 and a second positioning part 152. The second positioning part 152 is located at the end of the side wall of the chassis 100 away from the bottom wall of the chassis 100 (i.e., the second positioning part 152 is located at the upper end of the chassis 100). The second positioning mating part 241 is inserted into the second positioning part 152 towards the inner bottom surface of the chassis 100 for pre-positioning. The second connecting part 151 is fixedly connected to the second connecting mating part 242.
[0043] Furthermore, such as Figures 10 to 12 As shown, the shell-and-tube heat exchanger 250 is provided with a first interface 251, and the mounting bracket 22 is also provided with a third connecting mating part 232, a fourth connecting mating part 233, and a third positioning part 234. The first interface 251, the third connecting mating part 232, the fourth connecting mating part 233, and the third positioning part 234 are all located inside the area enclosed by the shell-and-tube heat exchanger 250. The outdoor unit also includes a liquid storage tank 300, which is located inside the area enclosed by the shell-and-tube heat exchanger 250. The liquid storage tank 300 is provided with a second interface 310 and a third connecting part 320. The first interface 251 is located between the second interface 310 and the chassis 100 and is plugged into and connected to the second interface 310, so that the liquid storage tank 300 can be mounted on the shell-and-tube heat exchanger 250. The inner side of the tube heat exchanger 250 is pre-positioned, and the third connecting part 320 is fixedly connected to the third connecting mating part 232 to realize the fixed connection between the liquid storage tank 300 and the mounting bracket 22; and the gas-liquid separator 400 is located inside the area enclosed by the tube heat exchanger 250. The gas-liquid separator 400 is provided with a third positioning mating part 410 and a fourth connecting part 420. The third positioning mating part 410 is inserted into the third positioning part 234 facing the inner bottom surface of the chassis 100 to realize the pre-positioning of the gas-liquid separator 400 inside the tube heat exchanger 250. The fourth connecting part 420 is fixedly connected to the fourth connecting mating part 233 to realize the fixed connection between the gas-liquid separator 400 and the mounting bracket 22.
[0044] Furthermore, such as Figure 12 As shown, one of the third positioning part 234 and the third positioning mating part 410 is a rib and the other is a socket. The rib and the socket are interference-fitted (the interference can be set to about 1mm). In this way, the gas-liquid separator 400 will not shake relative to the mounting bracket 22 when the rib and the socket are mated.
[0045] In one embodiment, such as Figure 2 , Figure 5 , Figures 10 to 12As shown, the mounting bracket 22 includes a first bracket plate 210, a second bracket plate 220, a third bracket plate 230, and a fourth bracket plate 240. The first bracket plate 210 is located on the lower part of the left front side of the shell-and-tube heat exchanger 250, and the first first support foot 211 is located on the lower part of the first bracket plate 210. The second bracket plate 220 is located on the lower part of the left rear side of the shell-and-tube heat exchanger 250, and the second support foot 221 is located on the lower part of the second bracket plate 220. The third bracket plate 230 and the fourth bracket plate 240 are located on the right side of the shell-and-tube heat exchanger 250, with the third bracket plate 230 located inside the area enclosed by the shell-and-tube heat exchanger 250 and the fourth bracket plate 240 located outside the area enclosed by the shell-and-tube heat exchanger 250. The lower parts of the third bracket plate 230 and the lower parts of the fourth bracket plate 240 are fixedly connected to each other below the shell-and-tube heat exchanger 250 to form the second first support foot 231. The inlet 252 and outlet 253 of the shell-and-tube heat exchanger 250 are spaced vertically and fixedly installed to the right on the fourth frame plate 240. The second connecting part 242 and the second positioning part 241 are located on the fourth frame plate 240. The second connecting part 151 and the second positioning part 152 are located on the right side wall of the chassis 100. The second positioning part 241 is inserted into the second positioning part 152 with the inner bottom surface of the chassis 100 facing downward, so that the fourth frame plate 240 is pre-positioned on the right side wall of the chassis 100. Then the second connecting part 151 and the second connecting part 242 are fixedly connected to achieve a fixed connection between the fourth frame plate 240 and the right side wall of the chassis 100. The first interface 251 is located on the lower inner side of the shell-and-tube heat exchanger 250 and faces upwards. The second interface 310 is located at the bottom of the liquid storage tank 300 and faces downwards. The third connecting part 320 is located on the upper part of the liquid storage tank 300, and the third connecting mating part 232 is located on the upper part of the third bracket 230. This makes the liquid storage tank 300 more stable after installation and prevents it from shaking relative to the third bracket 230. The third positioning mating part 410 is located on the lower part of the gas-liquid separator 400, the fourth connecting part 420 is located on the upper part of the gas-liquid separator 400, the third positioning part 234 is located on the lower part of the third bracket 230, and the fourth connecting mating part 233 is located on the upper part of the third bracket 230. This also makes the gas-liquid separator 400 more stable after installation and prevents it from shaking relative to the third bracket 230. The rear edge of the fourth frame plate 240 is provided with a right-bending folded edge, and the lower end of the folded edge forms a second positioning mating part 241. The second connecting mating part 242 is located to the left of the second connecting part 151 (that is, the fourth frame plate 240 is located to the left of the right side wall of the chassis 100).
[0046] In one embodiment, such as Figures 2 to 5 , Figure 11 As shown, the first connecting portion and the first connecting mating portion, the second connecting portion 151 and the second connecting mating portion 242, the third connecting portion 320 and the third connecting mating portion 232, and the fourth connecting portion 420 and the fourth connecting mating portion 233 are all provided as threaded holes, which include through holes and threaded holes. Additionally, as...Figure 1 , Figure 2 and Figure 6 As shown, the outdoor unit also includes a second chassis 500, and the chassis 100 is located inside the second chassis 500.
[0047] The hot and cold water unit (not shown in the figure) provided in this application includes the outdoor unit described in any of the above embodiments.
[0048] This hot and cold water unit possesses all the advantages of the outdoor unit provided in any of the above embodiments, which will not be repeated here.
[0049] In summary, the technical solution provided by this application involves installing a punch on an existing chassis manufacturing mold, and using the existing chassis manufacturing mold with the punch installed to manufacture the chassis. The punch presses out support protrusions of a specific height at corresponding positions on the bottom wall of the chassis. The chassis mates with the first support foot through the support protrusions. For support protrusions of different heights, different punches can be used to punch them. This solution is simple to operate and does not require the additional fabrication of a large mating platform with different heights on the inner bottom wall of the chassis for mating with the mounting frame. Therefore, the chassis does not need to be re-molded, which can effectively reduce the production cost of the outdoor unit. In addition, the support protrusions separate the first support foot and the bottom wall of the chassis, so that a water flow gap is formed between the first support foot and the bottom wall of the chassis. This allows the condensate on the chassis to flow along the water flow gap, thus improving the flow of condensate on the chassis.
[0050] In the description of this utility model, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "square structure", 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 utility model and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0051] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0052] Although the embodiments disclosed in this utility model are as described above, the content described is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this utility model, but the patent protection scope of this utility model shall still be defined by the appended claims.
Claims
1. An outdoor unit, characterized in that, include: The chassis has supporting protrusions on its bottom wall; A shell-and-tube heat exchanger assembly includes a shell-and-tube heat exchanger and a mounting bracket assembled together. The mounting bracket is provided with a first support foot, which is positioned on a support protrusion and forms a water flow gap between itself and the bottom wall of the chassis.
2. The outdoor unit according to claim 1, characterized in that, The bottom wall of the chassis is also provided with a mating surface, and the mounting bracket is also provided with a second support foot, which is placed on the mating surface.
3. The outdoor unit according to claim 2, characterized in that, The supporting protrusions include multiple sets, and the mating surfaces and the multiple sets of supporting protrusions are distributed circumferentially on the chassis. The first supporting feet include multiple sets, and the multiple first supporting feet are placed one-to-one with the multiple sets of supporting protrusions. The angle between the axis of the shell-and-tube heat exchanger and the inner bottom surface of the chassis is 85 degrees to 95 degrees.
4. The outdoor unit according to any one of claims 1 to 3, characterized in that, The support protrusion is a stamped protrusion.
5. The outdoor unit according to any one of claims 1 to 3, characterized in that, The chassis is provided with a first positioning part and a first connecting part, and the first support foot is provided with a first positioning mating part and a first connecting mating part. The first positioning part and the first positioning mating part are mated together, and the first connecting part and the first connecting mating part are fixedly connected.
6. The outdoor unit according to claim 5, characterized in that: The first positioning part is located on the inner side of the chassis, and the first positioning mating part abuts against the first positioning part facing the inner side of the chassis; and / or The first positioning part is located on the bottom wall of the chassis, and the first positioning mating part is inserted into the first positioning part facing the inner bottom surface of the chassis.
7. The outdoor unit according to any one of claims 1 to 3, characterized in that, The mounting bracket is further provided with a second connecting part and a protruding second positioning part. The second connecting part and the second positioning part are located on the outside of the area enclosed by the shell and tube heat exchanger. The side wall of the chassis is provided with a second connecting part and a second positioning part. The second positioning part is located at the end of the side wall of the chassis away from the bottom wall of the chassis. The second positioning part is inserted into the second positioning part facing the inner bottom surface of the chassis. The second connecting part is fixedly connected to the second connecting part.
8. The outdoor unit according to any one of claims 1 to 3, characterized in that, The shell-and-tube heat exchanger is provided with a first interface, and the mounting bracket is also provided with a third connecting mating part, a fourth connecting mating part, and a third positioning part. The first interface, the third connecting mating part, the fourth connecting mating part, and the third positioning part are all located inside the area enclosed by the shell-and-tube heat exchanger; the outdoor unit also includes: A liquid storage tank is located inside the area enclosed by the shell-and-tube heat exchanger. The liquid storage tank has a second interface and a third connecting part. The first interface is located between the second interface and the chassis and is plugged into and communicates with the second interface. The third connecting part is fixedly connected to the third connecting mating part. A gas-liquid separator is located inside the area enclosed by the shell-and-tube heat exchanger. The gas-liquid separator is provided with a third positioning and fitting part and a fourth connecting part. The third positioning and fitting part is inserted into the third positioning part facing the inner bottom surface of the chassis, and the fourth connecting part is fixedly connected to the fourth connecting and fitting part.
9. The outdoor unit according to claim 8, characterized in that, One of the third positioning part and the third positioning mating part is a rib and the other is a socket, and the rib and the socket are interference fit.
10. A hot and cold water unit, characterized in that, Includes the outdoor unit as described in any one of claims 1 to 9.