Chassis assembly and heat pump unit

Abstract

The utility model discloses a chassis assembly and a heat pump unit, and belongs to the technical field of air conditioners, the chassis assembly comprises a chassis body and an electric heating device; the chassis body is provided with a first drainage area and a second drainage area connected with the first drainage area, the first drainage area is higher than the second drainage area, the electric heating device is arranged in the second drainage area, the first drainage area is provided with a first drainage hole, and the second drainage area is provided with a second drainage hole. According to the chassis assembly, the drainage efficiency of the chassis body can be improved, and freezing of the chassis body is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to a chassis component and a heat pump unit. Background Art

[0002] The chassis body of a traditional heat pump unit usually faces the problem of bottom icing in cold weather, especially in northern regions. Due to the low climate temperature, when the heat pump unit is running, the air will release heat when passing through the fin heat exchanger. When the heat in the air drops to a certain saturation point, the air with moisture will condense into water and frost on the fin heat exchanger. When the fin heat exchanger reaches a certain temperature, the heat pump unit will defrost. The defrosted water will flow down along the fin heat exchanger to the chassis body. The existing chassis body has poor drainage effect, which can easily cause water to freeze in low temperature climates and block the drainage port of the chassis body, and even freeze and crack the copper pipe on the fin heat exchanger, causing damage to the heat pump unit. Utility Model Content

[0003] The purpose of the embodiments of the present utility model is to provide a chassis assembly and a heat pump unit, wherein the chassis assembly can improve the drainage efficiency of the chassis body and effectively prevent the chassis body from freezing.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] On the one hand, a chassis assembly is provided, including a chassis body and an electric heating device; the chassis body has a first drainage area and a second drainage area connected to the first drainage area, the height of the first drainage area is higher than the height of the second drainage area, the electric heating device is arranged in the second drainage area, the first drainage area is provided with a first drainage hole, and the second drainage area is provided with a second drainage hole.

[0006] Optionally, the first drainage area is provided with a first boss, and the second drainage area is provided with a second boss.

[0007] Optionally, the chassis assembly further includes a support beam; the chassis body is mounted on the support beam, and the support beam is provided with a lifting ring or a lifting hole.

[0008] Optionally, the chassis body is integrally formed by sheet metal, the first boss and the second boss are both located on the upper surface of the chassis body, a first groove is formed below the first boss, and a second groove is formed below the second boss, the first groove and the second groove are both located on the lower surface of the chassis body, the support beam is provided with a first support platform and / or a second support platform, the first support platform is located in the first groove and abuts against the inner wall of the first groove, and the second support platform is located in the second groove and abuts against the inner wall of the second groove.

[0009] Optionally, the upper surface of the bottom disc body is further provided with a plurality of third bosses, a third groove is formed below each of the third bosses, and a liquid flow channel is formed between two adjacent third bosses, the liquid flow channel has a first straight segment and a second straight segment, and an included angle between the first straight segment and the second straight segment is obtuse.

[0010] Optionally, a positioning convex ball is arranged on the support beam, and a positioning hole is arranged on the bottom disc body, and the positioning convex ball is clamped into the positioning hole.

[0011] Optionally, the height of the second drainage area gradually increases in a direction away from the second drainage hole.

[0012] Optionally, the bottom disc assembly further comprises a temperature sensor mounted on the bottom disc body, and the electric heating device is an electric heating wire, and the temperature sensor is electrically connected with the electric heating device.

[0013] Optionally, a water collecting groove is formed in the upper surface of the bottom disc body, and the second drainage area is located on the bottom wall of the water collecting groove.

[0014] In another aspect, a heat pump unit is provided, comprising the above-mentioned bottom disc assembly.

[0015] The bottom disc body of the bottom disc assembly is provided with a first drainage area and a second drainage area, and the height of the first drainage area is greater than the height of the second drainage area, so that when in use, the finned heat exchanger can be installed in the first drainage area, part of the water after defrosting will flow into the first drainage area of the bottom disc body along the finned heat exchanger, and the water is discharged through the first drainage hole on the first drainage area, at the same time, since the second drainage area is located below the first drainage area, part of the water after defrosting will flow to the second drainage area, and the water can be discharged faster through the second drainage hole on the second drainage area, especially when the first drainage hole cannot discharge water fast enough due to a large amount of water, the second drainage area can accommodate most of the water, and the second drainage area is provided with an electric heating device to avoid ice formation in the second drainage area, thereby avoiding water accumulation in the first drainage area and ice formation on the finned heat exchanger.

[0016] The heat pump unit of the utility model can improve the drainage efficiency of the heat pump unit by adopting the above-mentioned bottom disc assembly, and effectively avoid damage to the heat pump unit caused by icing of the bottom disc body. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be explained further in detail according to the drawings and embodiments.

[0018] Figure 1 It is a structural schematic view of the bottom disc assembly;

[0019] Figure 2 It is an explosion view of the bottom disc assembly.

[0020] Figure 3 It is a partial cross-sectional view of the chassis assembly;

[0021] Figure 4 for Figure 3 A magnified view of point A;

[0022] Figure 5 for Figure 3 Magnified view of point B.

[0023] Description of the accompanying drawings:

[0024] 11. Chassis body; 12. Support beam;

[0025] 1101, first drainage area; 1102, second drainage area; 1103, first drainage hole; 1104, second drainage hole; 1105, first boss; 1106, second boss; 1107, first groove; 1108, second groove; 1109, third boss; 1110, liquid flow channel; 1111, first straight segment; 1112, second straight segment; 1113, positioning hole; 1114, enclosure; 1115, water collection trough;

[0026] 1201, hanging hole; 1202, convex ball; 1203, base; 1204, second supporting platform. DETAILED DESCRIPTION

[0027] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved more clearly, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0028] In the description of this utility model, unless otherwise expressly specified or limited, the terms "connected," "fixed," "connected," "communicated," "abutted," "clamped," etc. should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0030] In the description herein, it should be understood that terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0031] Throughout this specification, references to terms such as "one embodiment" and "example" indicate that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example.

[0032] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0033] Unless specifically stated or defined otherwise, the term “and / or” used in the present invention includes any and all combinations of one or more of the associated listed items.

[0034] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 3 The up and down directions themselves are consistent.

[0035] like Figures 1 to 5As shown, this embodiment provides a chassis assembly including a chassis body 11 and an electric heating device. The chassis body 11 is rectangular and has a first drainage area 1101 and a second drainage area 1102 connected to the first drainage area 1101. The height of the first drainage area 1101 is higher than the height of the second drainage area 1102. That is, when the chassis body 11 is placed horizontally, the first drainage area 1101 is located above the second drainage area 1102. The electric heating device is located in the second drainage area 1102. The first drainage area 1101 is provided with a first drainage hole 1103, and the second drainage area 1102 is provided with a second drainage hole 1104. The fin heat exchanger of the heat pump unit is installed in the first drainage area 1101. In this way, when the heat pump unit is defrosted, the frost on the fin heat exchanger will turn into water and quickly fall directly into the first drainage area 1101, and then quickly flow out of the chassis body 11 through the first drainage hole 1103. Some of the water that is unable to drain from the first drain hole 1103 in time will flow to the second drain area 1102 due to the height difference. The second drain area 1102 can accommodate most of the water, and the water will not accumulate in the first drain area 1101. The water that finally flows to the second drain area 1102 can be discharged from the second drain hole 1104, which can speed up the drainage of the water. In this way, when the chassis assembly of the present application is used in an environment with extremely low temperatures, the first drain area 1101 will not form ice covering the fin heat exchanger. At the same time, the second drain area 1102 is equipped with an electric heating device, which will be frequently turned on under certain ultra-low temperature conditions, thus preventing the second drain area 1102 from freezing.

[0036] Optionally, first drainage area 1101 is provided with a first boss 1105, and second drainage area 1102 is provided with a second boss 1106. First boss 1105 and second boss 1106 can be used to support components of the heat pump unit, such as the finned heat exchanger, motor support frame, middle baffle, compressor, and other components. First boss 1105 and second boss 1106 elevate components such as the finned heat exchanger, motor support frame, middle baffle, and compressor, creating a sufficient drainage gap between these components and chassis body 11, facilitating rapid drainage and preventing damage to the finned heat exchanger, compressor, and motor on the motor support frame due to water immersion.

[0037] Furthermore, there are multiple first bosses 1105 and second bosses 1106. Since the volumes of the fin heat exchanger, motor support frame, middle partition, compressor and other components are different, support for the fin heat exchanger, motor support frame, middle partition, compressor and other components can be achieved by combining different numbers of first bosses 1105 and second bosses 1106.

[0038] In one embodiment, the chassis assembly further includes a support beam 12. Support beam 12 serves as the base of the chassis assembly. The chassis body 11 is mounted on support beam 12, which is provided with lifting rings or holes 1201. Support beam 12 supports chassis body 11 at a certain height to facilitate drainage. Furthermore, the provision of lifting rings or holes 1201 on support beam 12 facilitates the transport of the chassis assembly or after the chassis assembly is assembled into a heat pump unit.

[0039] In one embodiment, the chassis body 11 is formed by integral sheet metal stamping or integral mold opening, which has low production cost and high production efficiency. The first boss 1105 and the second boss 1106 are both located on the upper surface of the chassis body 11. The first boss 1105 protrudes upward, forming a first groove 1107 below the first boss 1105, and the second boss 1106 protrudes upward, forming a second groove 1108 below the second boss 1106, which helps to reduce the weight of the chassis body 11. The first groove 1107 and the second groove 1108 are both located on the lower surface of the chassis body 11. The support beam 12 is provided with a first support platform and / or a second support platform 1204. The first support platform and the second support platform 1204 are both integrally formed with the support beam 12. The first support platform is located in the first groove 1107 and abuts the inner wall of the first groove 1107. The second support platform 1204 is located in the second groove 1108 and abuts the inner wall of the second groove 1108. In this embodiment, the second boss 1106 is used to support a component with a relatively large weight. Therefore, taking the support beam 12 as an example, there are multiple second support platforms 1204 and they are integrally formed with the second boss 1106. By having multiple second support platforms 1204 abut upward against the top of the second groove 1108, support for the second boss 1106 is achieved. The second support platform 1204 can improve the bearing capacity of the second boss 1106.

[0040] Optionally, the upper surface of the chassis body 11 is further provided with a plurality of third bosses 1109, a third groove is formed below each third boss 1109, and a liquid flow channel 1110 is formed between two adjacent third bosses 1109. The liquid flow channel 1110 has a first straight line segment 1111 and a second straight line segment 1112, and the angle between the first straight line segment 1111 and the second straight line segment 1112 is an obtuse angle.

[0041] The third boss 1109 can be used to mount a motor support frame, a partition plate, a compressor, etc. The motor support frame is used to mount a motor, and needs to bear not only the static load of the motor support frame, the partition plate, the compressor and other components, but also the dynamic load of the motor and the compressor during operation. These loads generate stress, which can easily cause the third boss 1109 to deform, especially when the first straight section 1111 and the second straight section 1112 are at a right angle, the stress will be concentrated on a line, and the stress concentration of the third boss 1109 can easily cause deformation. Setting too many support beams 12 to support the third boss 1109 can increase the weight of the chassis assembly. Therefore, the included angle between the first straight section 1111 and the second straight section 1112 is obtuse, that is, the edges of the two third bosses 1109 close to each other are chamfered structures, which can disperse stress.

[0042] Further, the support beam 12 is provided with a positioning convex ball 1202, the positioning convex ball 1202 is a hemisphere, and the end face of the positioning convex ball 1202 is arranged on the upper surface of the support beam 12. The chassis body 11 is provided with a positioning hole 1113, the positioning convex ball 1202 is clamped into the positioning hole 1113, and the positioning convex ball 1202 and the positioning hole 1113 are in one-to-one correspondence and realize positioning when the chassis body 11 is mounted on the support beam 12. Meanwhile, the spherical surface of the hemisphere not only reduces wear, but also facilitates assembly or disassembly of the chassis body 11 and the support beam 12.

[0043] Further, the support beam 12 is provided with a base 1203 at both ends. The positioning convex ball 1202 is located on the base 1203, and the base 1203, the positioning convex ball 1202 and the support beam 12 are integrally formed. The height of the first drainage area 1101 is higher than the height of the second drainage area 1102, and the chassis body 11 is formed by sheet metal processing. Therefore, the height of the bottom of the first drainage area 1101 is higher than the height of the bottom of the second drainage area 1102, the base 1203 abuts against the bottom of the first drainage area 1101, thereby supporting the first drainage area 1101 and avoiding deformation of the chassis body 11.

[0044] In one embodiment, the height of the second drainage area 1102 gradually increases in a direction away from the second drainage hole 1104. The second drainage area 1102 is designed with a slope surface, which converges in the second drainage hole 1104 from different directions, and the slope surface plays a role of water guide.

[0045] Optionally, the chassis assembly also includes a temperature sensor. The electric heating device is an electric heating wire, and the temperature sensor is electrically connected to the electric heating device. The temperature sensor is used to detect the temperature of the chassis body 11 and is installed on the chassis body 11. Specifically, since the first drain area 1101 is located below the fin heat exchanger, water generated by defrosting the fin heat exchanger can be discharged through the first drain hole 1103 or fall into the second drain area 1102 when it falls into the first drain area 1101. This prevents water accumulation in the first drain area 1101. Therefore, the heating wire is installed in the second drain area 1102. The electric heating wire can also be called an electric heating wire or heating wire. It is easy to install and low-cost. This prevents the water in the second drain area 1102 from freezing. At the same time, to save energy, the electric heating wire is controlled to activate only when the temperature environment is at a freezing temperature. By installing a temperature sensor on the chassis body 11 to detect the temperature, in this embodiment, the temperature sensor can be installed in the second drain area 1102 to accurately detect whether the second drain area 1102 has reached the freezing temperature condition.

[0046] Furthermore, a water collection trough 1115 is provided on the upper surface of the chassis body 11, and the second drainage area 1102 is located on the bottom wall of the water collection trough 1115. The water collection trough 1115 is located in the central area of ​​the chassis body 11, and the first drainage area 1101 extends circumferentially along the edge of the chassis body 11. The first drainage area 1101 is surrounded by the water collection trough 1115. The edge of the chassis body 11 is provided with a panel 1114, and the first drainage area 1101 is located in the area enclosed by the panel 1114. This allows accumulated water to be concentrated in the central portion of the upper surface of the chassis body 11. This area generates a certain temperature when components such as a motor and a compressor are installed, thereby reducing the risk of ice forming in the second drainage area 1102 and blocking the second drainage hole 1104, allowing water to be discharged from the second drainage hole 1104.

[0047] Optionally, the first drainage hole 1103 is a waist-shaped hole and the second drainage hole 1104 is a round hole. The waist-shaped hole has a larger cross-section, which effectively increases the drainage volume. A plurality of pressure rivet nuts are installed on the chassis body 11, and the pressure rivet nuts are used to fix the motor support frame, the middle partition, etc. on the chassis body 11.

[0048] This embodiment also provides a heat pump unit, comprising the chassis assembly of any of the aforementioned embodiments. Specifically, the heat pump unit further comprises a finned heat exchanger, a compressor, a blower with a motor, a motor support frame, a middle baffle plate gas-liquid separator, and the like. For example, the finned heat exchanger is mounted on a first boss 1105, a distributor connected to the copper pipes on the finned heat exchanger is mounted on a second boss 1106, and the motor support frame and middle baffle plate are mounted on a third boss 1109.

[0049] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A chassis assembly, characterized in that: The invention comprises a chassis body (11) and an electric heating device; the chassis body (11) has a first drainage area (1101) and a second drainage area (1102) connected to the first drainage area (1101); the height of the first drainage area (1101) is higher than the height of the second drainage area (1102); the electric heating device is arranged in the second drainage area (1102); the first drainage area (1101) is provided with a first drainage hole (1103); and the second drainage area (1102) is provided with a second drainage hole (1104).

2. The chassis assembly according to claim 1, wherein: The first drainage area (1101) is provided with a first boss (1105), and the second drainage area (1102) is provided with a second boss (1106).

3. The chassis assembly according to claim 2, wherein: It also includes a support beam (12); the chassis body (11) is installed on the support beam (12), and the support beam (12) is provided with a hanging ring or a hanging hole (1201).

4. The chassis assembly according to claim 3, characterized in that The chassis body (11) is integrally formed by sheet metal, the first boss (1105) and the second boss (1106) are both located on the upper surface of the chassis body (11), a first groove (1107) is formed below the first boss (1105), and a second groove (1108) is formed below the second boss (1106), the first groove (1107) and the second groove (1108) are both located on the lower surface of the chassis body (11), the support beam (12) is provided with a first support platform and / or a second support platform (1204), the first support platform is located in the first groove (1107) and abuts against the inner wall of the first groove (1107), and the second support platform (1204) is located in the second groove (1108) and abuts against the inner wall of the second groove (1108).

5. The chassis assembly according to claim 4, characterized in that The upper surface of the chassis body (11) is further provided with a plurality of third bosses (1109), a third groove is formed below each of the third bosses (1109), and a liquid flow channel (1110) is formed between two adjacent third bosses (1109). The liquid flow channel (1110) has a first straight line segment (1111) and a second straight line segment (1112), and the angle between the first straight line segment (1111) and the second straight line segment (1112) is an obtuse angle.

6. The chassis assembly according to claim 3, wherein: The support beam (12) is provided with a positioning convex ball (1202), the chassis body (11) is provided with a positioning hole (1113), and the positioning convex ball (1202) is inserted into the positioning hole (1113).

7. The chassis assembly according to any one of claims 1 to 6, characterized in that: The height of the second drainage area (1102) gradually increases in a direction away from the second drainage hole (1104).

8. The chassis assembly according to any one of claims 1 to 6, characterized in that: It also includes a temperature sensor installed on the chassis body (11); the electric heating device is an electric heating wire, and the temperature sensor is electrically connected to the electric heating device.

9. The chassis assembly according to any one of claims 1 to 6, characterized in that: A water collecting trough (1115) is provided on the upper surface of the chassis body (11), and the second drainage area (1102) is located on the bottom wall of the water collecting trough (1115).

10. A heat pump unit, characterized in that: Comprising a chassis assembly according to any one of claims 1 to 9.

Images