Water pan assembly, defrosting drainage system and heat pump unit

Abstract

The utility model relates to a water pan assembly, a defrosting drainage system and a heat pump unit. The water pan assembly comprises a water pan body and a heating assembly fixedly connected to the water pan body. The water pan body is provided with at least one bearing plate used for bearing a heat exchanger and at least one water receiving groove. The bearing plate is obliquely arranged relative to the horizontal plane; the water receiving tank is fixedly connected with the lower end of the bearing plate; at least one group of flow guide structures are arranged at the bottom of the water receiving tank, and water outlets are formed in the water flow tail ends of the flow guide structures; the heating assembly is fixedly connected to the bottom face of the bearing plate and fixedly connected to the bottom face of the water receiving groove. According to the water pan assembly disclosed by the utility model, the structure convenient for guiding the defrosting water is designed, and the flowing path of the defrosting water is heated, so that the defrosting water is prevented from being quickly frozen to cause ice blockage in a source area, and the defrosting water can be conveniently and quickly guided away from a heat exchanger.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a water receiving tray component, a defrosting drainage system and a heat pump unit. Background Art

[0002] The surface of the outdoor heat exchanger of the existing heat pump unit is prone to frost, which leads to unstable operation or poor reliability of the unit. After the outdoor heat exchanger is frosted, the frost layer continues to thicken, resulting in increased thermal resistance, obstructed air flow, and reduced heating capacity and unit performance. Existing heat pump units usually have a defrost mode, but in the high humidity and cold northern regions, the use of heat pump units usually requires centralized drainage to collect and drain the defrost water of the fins. Otherwise, under cold ambient temperature conditions, the defrost water will freeze quickly, causing ice to accumulate and burst the fin heat exchange tubes, or fall into the pipeline and freeze the copper tubes, affecting the stable operation of the heat pump unit. Utility Model Content

[0003] Based on this, the purpose of the utility model is to provide a water receiving tray assembly, which is designed with a structure that is convenient for guiding the defrost water and heats the path through which it flows to prevent the defrost water from freezing quickly and causing ice blockage in the source area, so as to quickly guide the defrost water away from the heat exchanger.

[0004] Another object of the utility model is to provide a defrost drainage system, which can quickly discharge defrost water to the outside of the heat pump unit by arranging a water receiving pan assembly that is convenient for drainage and arranging a drainage pipe assembly under the water receiving pan assembly.

[0005] Another object of the utility model is to provide a heat pump unit, which is provided with a defrost drainage system to avoid secondary freezing of defrost water and ensure stable operation of the heat pump unit.

[0006] A water tray assembly, comprising:

[0007] A water receiving tray body and a heating component fixedly connected to the water receiving tray body;

[0008] The water receiving pan body is provided with at least one supporting plate for supporting the heat exchanger, and at least one water receiving groove;

[0009] The supporting plate is arranged obliquely relative to the horizontal plane;

[0010] The water receiving trough is fixedly connected to one end of the supporting plate located below; at least one set of diversion structures is arranged at the bottom of the water receiving trough, and a drainage port is arranged at the end of the water flow of the diversion structure;

[0011] The heating component is fixedly connected to the bottom surface of the supporting plate and the bottom surface of the water receiving tank.

[0012] Furthermore, the guide structure also includes at least one guide surface connected to the drain outlet; the guide surface is inclined along the flow direction of the water flow.

[0013] Furthermore, the surface of the support plate in contact with the defrost water of the heat exchanger, and the surface of the water receiving trough in contact with the defrost water of the heat exchanger are both provided with an anti-icing coating.

[0014] Furthermore, the heating assembly includes a heating layer, a thermal insulation layer and a fixing layer; an end of the fixing layer is fixedly connected to the water receiving tray body, and the heating layer and the thermal insulation layer are arranged between the fixing layer and the water receiving tray body; the thermal insulation layer is sandwiched between the fixing layer and the heating layer.

[0015] Furthermore, the water receiving tray assembly also includes:

[0016] A support assembly, fixedly connected to the water receiving tray body;

[0017] The water receiving tray body also includes a connecting plate, which is fixedly connected to an end of the supporting plate away from the water receiving trough;

[0018] The support assembly includes a plurality of first support members and a plurality of second support members. The plurality of first support members are spaced apart from each other and abut against the bottom of the water receiving trough. The two end surfaces of the second support members which are away from each other are respectively abutted against the connecting plate and the first support members.

[0019] A defrosting drainage system comprises: a water receiving tray assembly of the utility model;

[0020] And a drainage pipe assembly is arranged below the water receiving tray assembly, wherein the drainage pipe assembly is provided with a plurality of water inlets, and the plurality of water inlets are connected with the drainage outlets through drainage branches.

[0021] Furthermore, the drainage pipe assembly is provided with at least one main drainage pipe, which is inclined relative to a horizontal plane and has an end which is conductively connected to an external pipeline.

[0022] Furthermore, a heating element is provided inside and / or outside the main drainage pipe.

[0023] Furthermore, the drainage pipe assembly is externally provided with a heat-insulating box body, the heat-insulating box body is fixedly arranged below the water receiving tray assembly, and the drainage branch pipe is arranged inside the heat-insulating box body.

[0024] A heat pump unit comprises the defrosting and drainage system of the utility model.

[0025] The beneficial effects of the utility model are:

[0026] (1) By arranging heating components at the bottom of the support plate and the water receiving tank, the water receiving tray assembly can effectively guide the defrost water away from the heat exchanger to avoid secondary freezing of the defrost water at the bottom of the heat exchanger and nearby areas;

[0027] (2) By providing a guide structure at the bottom of the water receiving groove to divert and guide the defrost water, the guide efficiency of the water receiving tray assembly can be improved;

[0028] (3) By providing an anti-icing coating on the surface through which the defrost water flows, the drainage speed is effectively accelerated;

[0029] (4) By setting up a complete defrost drainage system in the heat pump unit, the defrost water is collected in the heat pump unit to ensure the reliable operation of the unit;

[0030] (5) A heating and heat preservation structure is provided for each link of the defrost drainage system to ensure smooth flow of the entire flow path.

[0031] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 An exploded view of a water tray assembly provided in an embodiment of the present application;

[0033] Figure 2 A cross-sectional view of a water tray assembly provided in an embodiment of the present application;

[0034] Figure 3 for Figure 2 A partial enlarged view of FIG.

[0035] Figure 4 for Figure 2 Partial enlarged view II;

[0036] Figure 5 for Figure 2 Partial enlarged view III

[0037] Figure 6 A schematic diagram of the installation of a defrost drainage system provided in an embodiment of the present application.

[0038] In the figure: 100-defrost drainage system; 10-water collection tray assembly; 11-water collection tray body; 111-supporting plate; 112-water collection trough; 113-guiding structure; 1131-drainage outlet; 1132-guiding surface; 114-connecting plate; 12-heating assembly; 121-heating layer; 122-insulating layer; 123-fixed layer; 13-support assembly; 131-first support member; 132-second support member; 20-drainage pipe assembly; 21-main drain pipe; 211-water inlet; 22-insulating box body; 200-heat exchanger. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the northern regions with high humidity and high cold, the use of heat pump units usually requires centralized drainage to collect and drain the defrost water from the fins. If it is not collected, the defrost water will freeze quickly under cold ambient temperature conditions, causing ice to accumulate and burst the fin heat exchange tubes, or fall to the pipeline and freeze and burst the copper tubes; even if it does not freeze, the defrost water is allowed to flow to the ground, which will cause the ground to be slippery for a long time, and people nearby may slip easily; in addition, for units installed on the roof of a house, there will be water on the ground for a long time, which may cause the roof to leak.

[0043] Based on this, an embodiment of the present application provides a defrost drainage system. By setting a water receiving tray assembly that is conducive to the rapid diversion of defrost water, and combining it with a drainage pipe assembly, the defrost water can be quickly discharged to the outside of the heat pump unit to avoid secondary freezing of the defrost water, thereby ensuring the stable operation of the heat pump unit.

[0044] See also Figure 1-3 and Figure 6, an embodiment of the present application provides a water receiving tray assembly, comprising: a water receiving tray body 11 and a heating assembly 12 fixedly connected to the water receiving tray body 11. The water receiving tray body 11 is provided with at least one supporting plate 111 for supporting the heat exchanger 200, and at least one water receiving trough 112. The supporting plate 111 is inclined relative to the horizontal plane, and the water receiving trough 112 is fixedly connected to the lower end of the supporting plate 111. At least one group of guide structures 113 is provided at the bottom of the water receiving trough 112, and a drain port 1131 is provided at the end of the flow path of the guide structure 113. The heating assembly 12 is fixedly connected to the bottom surfaces of the supporting plate 111 and the water receiving trough 112 at the same time, and is used to heat the supporting plate 111 and the water receiving trough 112 to prevent the defrost water from freezing quickly when it flows through the supporting plate 111 and the water receiving trough 112. Thus, in the defrost mode, the defrost water flowing down from the heat exchanger 200 can quickly flow through the supporting plate 111 to the water receiving groove 112, and then quickly drain away from the water receiving tray body 11 from the drain port 1131 through the guide structure 113 to avoid accumulation.

[0045] It can be understood that in some embodiments, the water tray body 11 includes two supporting plates 111 and two water receiving grooves 112, the heat exchangers 200 are respectively arranged on the two supporting plates 111, and the cross-section thereof is "V"-shaped, and the fan is arranged on the top of the two heat exchangers 200. The heat exchangers 200 are provided with triangular baffles at both ends along the length direction of the water tray body 11, respectively connected to the heat exchangers 200 on both sides and the fan on the top, so as to form a heat exchange space. The defrost water flowing down from the heat exchanger 200 flows to the water receiving grooves 112 on both sides through the two supporting plates 111, and then is discharged from the water tray body 11 through the drain port 1131.

[0046] In some other embodiments, the water receiving pan body 11 may also be provided with four supporting plates 111 and four water receiving grooves 112. It is understandable that the ends of the four supporting plates 111 are connected so that the water receiving pan body 11 is conical. The heat exchangers 200 are respectively arranged on the four supporting plates 111, and the fan is arranged at one end of the heat exchanger 200 away from the water receiving pan body 11. Similarly, a baffle is arranged between two adjacent heat exchangers 200 for connection, so as to form a heat exchange space. The defrost water flowing down from the heat exchanger 200 flows to the water receiving grooves 112 respectively through the four supporting plates 111, and then is discharged from the water receiving pan body 11 through the drain port 1131. It should be noted that the number of supporting plates 111 and water receiving pans can be determined according to the specific setting method of the heat exchanger 200.

[0047] Furthermore, in some embodiments, the guide structure 113 further includes at least one guide surface 1132 connected to the drain port 1131, and the guide surface 1132 is arranged obliquely along the flow direction of the water flow, so that the defrost water can flow to the drain port 1131 more quickly through the guide surface 1132. It can be understood that a plurality of guide structures 113 can be continuously arranged at the bottom of the water receiving trough 112 to form a wave shape, and a plurality of drain ports 1131 are arranged at intervals at the troughs, and the guide structure 113 can effectively divert and guide the defrost water, and can effectively accelerate the drainage speed.

[0048] Furthermore, in some embodiments, the surface of the support plate 111 that contacts the defrost water of the heat exchanger 200, and the surface of the water receiving trough 112 that contacts the defrost water of the heat exchanger 200 are both provided with an anti-icing coating, so that at a lower temperature, the defrost water flowing through the support plate 111 and the water receiving trough 112 will not be re-frozen on their surfaces, which can also effectively speed up the drainage speed.

[0049] Furthermore, in some embodiments, the length of the support plate 111 is greater than the length of the heat exchanger 200, and baffles protruding from the plane of the support plate 111 are provided at both ends of the support plate 111. The ends of the two baffles are directly connected to the open end of the water tank 112, which can effectively guide the defrost water into the water tank 112 to prevent the defrost water from flowing to the outside of the water tank 112.

[0050] See also Figure 2 and Figure 4 In some embodiments, the heating component 12 includes a heating layer 121 and an insulation layer 122 which are arranged in sequence. The heating layer 121 is directly fixed to the bottom surface of the supporting plate 111 and the water receiving trough 112, and is used to directly supply heat to the supporting plate 111 and the water receiving trough 112. The insulation layer 122 covers the outside of the heating layer 121, and is used to prevent heat loss and improve the efficiency of heat use. In this embodiment, the heating layer 121 can be a heating belt, and the insulation layer 122 can be an insulation sponge. In other embodiments, the heating layer 121 and the insulation layer 122 can be other settings for heating and insulating the supporting plate 111 and the water receiving trough 112, so that the defrost water will not cool down and freeze quickly, causing ice blockage in the source area, but it is not limited to this.

[0051] Furthermore, the heating component 12 also includes a fixing layer 123, the end of the fixing layer 123 is fixedly connected to the bottom of the water receiving tray body 11, and the heating layer 121 and the insulation layer 122 are sandwiched between the fixing layer 123 and the water receiving tray body 11, which can effectively protect and fasten the insulation layer 122 and the heating layer 121, so that the performance of the heating component 12 is more stable.

[0052] See also Figure 2 and Figure 5Furthermore, the water tray assembly 10 also includes a support assembly 13, which is fixed to the bottom of the water tray body 11 to increase stability. The water tray body 11 includes a connecting plate 114, which is fixed to one end of the supporting plate 111 away from the water receiving tank 112. The support assembly 13 includes a plurality of first support members 131 and a plurality of second support members 132, wherein the plurality of first support members 131 abut against the bottom of the water receiving tank 112 at intervals and extend to the bottom of the connecting plate 114; the two end surfaces of the second support member 132 that are away from each other abut against the connecting plate 114 and the first support member 131, respectively.

[0053] In the present embodiment, the water receiving tray body 11 includes two supporting plates 111 and two water receiving grooves 112, and the two ends of the connecting plate 114 are symmetrically connected to the supporting plates 111. The supporting assembly 13 includes a plurality of first supporting members 131 and a second supporting member 132. The plurality of first supporting members 131 are arranged at intervals at the bottom of the water receiving grooves 112, and the two ends of the first supporting members 131 are respectively fixedly connected to the bottoms of the two water receiving grooves 112. Preferably, the plurality of first supporting members 131 are arranged in parallel and at intervals, and are arranged perpendicular to the water receiving grooves 112. The second supporting member 132 is arranged parallel to the water receiving grooves 112, and is fixedly connected to the bottom of the connecting plate 114, and its opposite two end surfaces are respectively abutted against the connecting plate 114 and the first supporting member 131, and are used to support the connecting plate 114 and the supporting plate 111 to improve the stability of the water receiving tray assembly 10.

[0054] Specifically, in this embodiment, the second support member 132 is a U-shaped tube, and a folded edge is provided at the part abutting against the connecting plate 114 to increase the contact area with the connecting plate 114 to increase stability. The first support member 131 is a square tube, which is evenly stressed and makes the overall structure more stable. It is understandable that in other embodiments, the second support member 132 is a square tube or a solid cylinder, and the first support member 131 can also be other structures that are convenient for support, which will not be described in detail here.

[0055] See also Figure 6 The embodiment of the present application also provides a defrost drainage system 100, including a water receiving tray assembly 10 and a drainage pipe assembly 20 disposed below the water receiving tray assembly 10. The drainage pipe assembly 20 is provided with a plurality of water inlets 211, and the plurality of water inlets 211 are connected to the drainage port 1131 through drainage branches (not shown). In this way, the defrost water of the water receiving tray assembly 10 enters the drainage pipe assembly 20 through the drainage branches, and then is discharged from the heat pump unit through the drainage pipe assembly 20.

[0056] It can be understood that, in some embodiments, the drain outlet 1131 and the water inlet 211 can correspond one to one and be connected one to one through a drain branch pipe; in other embodiments, multiple drain outlets 1131 can correspond to one water inlet 211, and the defrost water of multiple drain outlets 1131 can be collected through the drain branch pipe and enter the drainage pipe assembly 20 through one water inlet 211, but it is not limited to this.

[0057] It is understandable that the drainage branch pipe can be a hose with an external heating layer and an insulation layer, which is convenient for guiding the water flow from the drainage port 1131 to the water inlet 211, and at the same time can prevent the water flow from freezing in the drainage branch pipe, causing blockage of the flow path.

[0058] Furthermore, the drainage pipe assembly 20 is provided with at least one main drainage pipe 21, and a plurality of water inlets 211 are provided on the main drainage pipe 21 at intervals and upwardly, so that water can directly enter the main drainage pipe 21 through the water inlets 211. One end of the main drainage pipe 21 is closed, and its water outlet end is connected to an external pipeline. Preferably, the main drainage pipe 21 is inclined relative to the horizontal plane so that water can be discharged from the heat pump unit more quickly.

[0059] Furthermore, in some embodiments, a heating element is provided on the outer surface of the main drain pipe 21 to provide heat for the main drain pipe 21, so as to prevent the freezing of water flow in the main drain pipe 21 and blockage of the pipe, or the freezing and cracking of the pipe, which causes the defrosting water to be unable to be discharged from the heat pump unit, causing a short circuit in the heat pump unit. In other embodiments, the heating element is provided inside the main drain pipe 21. In this case, the heating element can be a heat-generating belt with waterproof insulation capability, and the heat-generating belt is pre-buried in the main drain pipe 21 to heat the inside of the main drain pipe 21. Furthermore, in some embodiments, the outside of the main drain pipe 21 is covered with a thermal insulation layer to prevent heat loss.

[0060] Furthermore, an insulation box 22 is provided outside the drainage pipe assembly 20, and the insulation box 22 is sealed to further prevent heat loss and enhance the stability of the drainage pipe assembly 20, so as to prevent the drainage pipe assembly 20 from aging or serious damage in a harsh environment. Preferably, the top of the insulation box 22 is a water receiving tray assembly 10. In this arrangement, the drainage branch pipe is located inside the insulation box 22, and the water from the drainage port 1131 directly enters the insulation box 22, making the overall defrosting drainage system 100 more stable.

[0061] See also Figure 6The embodiment of the present application also provides a heat pump unit, including the above-mentioned defrost drainage system 100 and the heat exchanger 200. The heat exchanger 200 is arranged above the water receiving tray assembly 10. When the heat pump unit is in the defrost mode, the defrost water generated by the heat exchanger 200 is guided away from the heat exchanger 200 through the water receiving tray assembly 10, collected in the drainage pipe assembly 20, and then discharged to the outside of the heat pump unit.

[0062] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0063] (1) By arranging heating components at the bottom of the support plate and the water receiving tank, the water receiving tray assembly can effectively guide the defrost water away from the heat exchanger to avoid secondary freezing of the defrost water at the bottom of the heat exchanger and nearby areas;

[0064] (2) By providing a guide structure at the bottom of the water receiving groove to divert and guide the defrost water, the guide efficiency of the water receiving tray assembly can be improved;

[0065] (3) By providing an anti-icing coating on the surface through which the defrost water flows, the drainage speed is effectively accelerated;

[0066] (4) By setting up a complete defrost drainage system in the heat pump unit, the defrost water is collected in the heat pump unit to ensure the reliable operation of the unit;

[0067] (5) A heating and heat preservation structure is provided for each link of the defrost drainage system to ensure smooth flow of the entire flow path.

[0068] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A water tray assembly, characterized in that: include: A water receiving tray body and a heating component fixedly connected to the water receiving tray body; The water receiving tray body is provided with at least one supporting plate and at least one water receiving groove; The supporting plate is arranged obliquely relative to the horizontal plane; The water receiving trough is fixedly connected to one end of the supporting plate located below; at least one set of diversion structures is arranged at the bottom of the water receiving trough, and a drainage port is arranged at the end of the water flow of the diversion structure; The heating component is fixedly connected to the bottom surface of the supporting plate and the bottom surface of the water receiving tank.

2. A water tray assembly according to claim 1, characterized in that: The guide structure further comprises at least one guide surface connected to the drain port; the guide surface is arranged obliquely along the flow direction of the water flow.

3. A water tray assembly according to claim 1, characterized in that: The surface of the support plate in contact with the defrosting water of the heat exchanger, and the surface of the water receiving trough in contact with the defrosting water of the heat exchanger are both provided with an anti-icing coating.

4. A water tray assembly according to claim 1, characterized in that: The heating assembly includes a heating layer, a heat-insulating layer and a fixing layer; the end of the fixing layer is fixedly connected to the water receiving pan body, and the heating layer and the heat-insulating layer are arranged between the fixing layer and the water receiving pan body; the heat-insulating layer is sandwiched between the fixing layer and the heating layer.

5. A water tray assembly according to claim 1, characterized in that: Also includes: A support assembly, fixedly connected to the water receiving tray body; The water receiving tray body also includes a connecting plate, which is fixedly connected to an end of the supporting plate away from the water receiving trough; The support assembly includes a plurality of first support members and a plurality of second support members. The plurality of first support members are spaced apart from each other and abut against the bottom of the water receiving trough. The two end surfaces of the second support members which are away from each other are respectively abutted against the connecting plate and the first support members.

6. A defrost drainage system, characterized in that: include: The water receiving tray assembly according to any one of claims 1 to 5; A drainage pipe assembly is arranged below the water receiving tray assembly, and the drainage pipe assembly is provided with a plurality of water inlets, and the plurality of water inlets are connected with the drainage outlets through drainage branches.

7. A defrost drainage system according to claim 6, characterized in that: The drainage pipe assembly is provided with at least one main drainage pipe, which is arranged obliquely relative to the horizontal plane, and the end of the flow path of the main drainage pipe is conductively connected to the external pipeline.

8. A defrost drainage system according to claim 7, characterized in that: A heating element is arranged inside and / or outside the main drainage pipe.

9. A defrost drainage system according to claim 6, characterized in that: The drainage pipe assembly is externally provided with a heat preservation box, the heat preservation box is fixedly arranged below the water receiving tray assembly, and the drainage branch pipe is arranged inside the heat preservation box.

10. A heat pump unit, characterized in that: include: The defrost drainage system according to any one of claims 6 to 9.

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