Backwater-preventing condensate water draining pump and air conditioner

Abstract

The utility model discloses an anti-backwater condensate water draining pump which comprises a shell, a driving assembly and a pump body, the driving assembly is installed in the shell, an impeller is installed in the pump body, and the driving assembly is provided with a rotating shaft which extends into the pump body and is connected with the impeller; a water blocking ring extending downwards is arranged at the bottom of the shell, a circular waterproof blocking piece is installed in the water blocking ring, the rotating shaft penetrates through the water blocking ring, the waterproof blocking piece is fixedly connected with the rotating shaft, and the waterproof blocking piece and the inner wall of the water blocking ring are arranged at intervals. A waterproof cavity located in the water blocking ring is formed between the waterproof blocking piece and the shell. The utility model further discloses an air conditioner adopting the backwater-preventing condensate water draining pump. According to the backwater-preventing condensate water draining pump, backflow condensate water can be more effectively prevented from entering the shell, the probability that the bearing is rusted and damaged is reduced, the maintenance rate is lower, and the user experience is better.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more precisely to a backflow prevention condensate drain pump and an air conditioner. Background Technology

[0002] During the cooling process of an air conditioner, the surface temperature of the indoor evaporator is very low. Some moisture in the indoor air that is in contact with the evaporator surface will condense out, forming condensate. When the temperature difference between the inside and outside is large or the air conditioner output power is high, the amount of condensate discharged is also large. Therefore, most existing air conditioners are equipped with a special condensate drain pump and drain pipe to drain the accumulated condensate in a timely manner.

[0003] Existing condensate drain pumps and drain pipes, such as Figure 1 As shown, the condensate drain pump includes an upper casing 11 and a lower pump body 13. A drive structure is installed inside the casing 11, and an impeller is installed inside the pump body 13. The drive structure is connected to the impeller via a rotating shaft and drives the impeller to rotate. The bottom of the body 13 has an inlet 14, and the side has an outlet 15 connected to the drain pipe 2. The inlet 14 is submerged below the water surface of the water tank 3. The impeller in the condensate drain pump rotates at high speed, drawing condensate from the water tank 3 into the drain pipe 2. To discharge the condensate to the outside, the top of the drain pipe 2 is generally higher than the top of the condensate drain pump, and the top of the drain pipe 2 has a vent 20.

[0004] Normal condensate drainage flow direction is as follows Figure 1 As shown by the solid arrow, the water is drawn from the tank 3 into the main body 13 through the inlet 14, and then transported to the drain pipe 2 through the outlet 15. When the air conditioner is powered off, the condensate in the drain pipe 2 will... Figure 1 The direction of the dashed arrow indicates backflow. Since drain pipe 2 is higher than the condensate drain pump, the backflowing condensate will flow back into the housing 11, causing water to enter the bearing of the rotating shaft. The waterproof oil in the bearing will fail, and after long-term use, it will cause the bearing to rust and be damaged, causing motor noise or jamming and failure to operate. Repair and replacement are required, which seriously affects the user experience.

[0005] To prevent condensate backflow from causing bearing rust and damage, existing condensate drain pumps typically use a baffle plate inside the casing that surrounds the underside of the bearing to block condensate. However, the baffle plate has limited water-blocking effect and cannot completely block the backflow of condensate.

[0006] In summary, there is a need in this field for a condensate drain pump that can more effectively prevent backflow condensate from entering the housing, thereby reducing the probability of bearing rust and damage and improving the user experience. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a backflow prevention condensate drain pump, which prevents backflow condensate from entering the housing by setting a backflow prevention structure at the bottom of the housing, thereby avoiding the situation of bearing rust and damage.

[0008] Another objective of this invention is to provide an air conditioner that employs the aforementioned anti-backflow condensate drain pump.

[0009] To achieve the above objectives, this utility model provides a backflow prevention condensate drain pump, including a housing, a drive assembly, and a pump body. The drive assembly is installed inside the housing, and an impeller is installed inside the pump body. The drive assembly has a rotating shaft extending into the pump body and connected to the impeller. The bottom of the housing has a downwardly extending water-blocking ring, and a circular waterproof baffle is installed in the water-blocking ring. The rotating shaft passes through the water-blocking ring, and the waterproof baffle is fixedly connected to the rotating shaft. The waterproof baffle is spaced apart from the inner wall of the water-blocking ring, and a waterproof cavity is formed between the waterproof baffle and the housing inside the water-blocking ring.

[0010] Preferably, the water-blocking ring has an inner cavity, and the waterproof baffle is installed inside the inner cavity through a mounting hole at the central axis position.

[0011] Preferably, the waterproof cavity is formed between the waterproof baffle and the top of the inner cavity.

[0012] Preferably, the height of the waterproof cavity is 1.0-1.5 mm.

[0013] Preferably, the distance between the waterproof baffle and the bottom plane of the water-blocking ring is 0.5-1.0 mm.

[0014] Preferably, the distance between the waterproof baffle and the inner wall of the water-blocking ring is 0.5-1.0 mm.

[0015] Preferably, the waterproof baffle has a mounting hole at its central axis position, and a bearing is provided above the waterproof baffle, with the bearing fixedly connected around the rotating shaft.

[0016] Preferably, the housing is composed of an upper housing and a lower housing connected together, and the water-blocking ring is located at the bottom of the lower housing; the pump body is composed of an upper pump body and a lower pump body connected together, the water-blocking ring is located inside the upper pump body, and the lower pump body has an inlet and an outlet.

[0017] Preferably, the drive assembly includes a stator assembly fixedly installed inside the housing and a rotor assembly rotatably installed in the middle of the stator assembly, with the rotating shaft fixedly connected to the middle of the rotor assembly.

[0018] This utility model provides an air conditioner that uses the aforementioned anti-backflow condensate drain pump.

[0019] Compared with the prior art, the advantages of the anti-backflow condensate drain pump and air conditioner disclosed in this utility model are as follows: the anti-backflow condensate drain pump can more effectively prevent backflow condensate from entering the housing, reduce the probability of bearing rust and damage, lower maintenance rate, and better user experience; the anti-backflow condensate drain pump has a lower cost; the air conditioner using the anti-backflow condensate drain pump has a lower failure rate, lower motor noise, and a better user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] like Figure 1 The diagram shows a schematic of the existing technology for the installation of a condensate drain pump and a drain pipe.

[0022] like Figure 2 The diagram shown is a schematic diagram of the split structure of a condensate drain pump for preventing backflow according to this utility model.

[0023] like Figure 3 The diagram shown is a structural schematic of a condensate drain pump that prevents backflow according to this utility model.

[0024] like Figure 4 The diagram shows a split structure of the front housing and waterproof baffle of a condensate drain pump according to this utility model.

[0025] like Figure 5 The figure shown is a cross-sectional view of the front housing of the anti-backflow condensate drain pump of this utility model, which is combined with a waterproof baffle.

[0026] like Figure 6 The figure shown is a cross-sectional view of a condensate drain pump that prevents backflow according to this utility model. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 2 to 6As shown, this application discloses a backflow prevention condensate drain pump, comprising a housing 10, a drive assembly, and a pump body 13. The drive assembly is installed inside the housing 10, and an impeller 133 is installed inside the pump body 13. The drive assembly has a rotating shaft 113 extending into the pump body 13 and connected to the impeller 133. The pump body 13 has an inlet 14 at the bottom and an outlet 15 on the side. The bottom of the housing 10 has a downwardly extending water-blocking ring 103, in which a circular waterproof baffle 12 is installed. The rotating shaft 113 passes through the water-blocking ring 103 coaxially with it. The waterproof baffle 12 is fixedly connected to the rotating shaft 113, and the waterproof baffle 12 is spaced apart from the inner wall of the water-blocking ring 103, forming a waterproof cavity 1031 located inside the water-blocking ring 103 between the waterproof baffle 12 and the housing 10. A bearing 1131 is provided above the waterproof baffle 12 and is fixedly connected around the rotating shaft 113. By combining the waterproof baffle 12 with the water-blocking ring 103, the backflow of condensate can be effectively blocked from entering the housing 10, thereby effectively protecting the bearing 1131, preventing the bearing 1131 from rusting and being damaged, thus reducing the maintenance rate and improving the user experience.

[0029] Specifically, the housing 10 consists of an upper housing 101 and a lower housing 102 connected together, with a water-blocking ring 103 located at the bottom of the lower housing 102. A sealing structure is provided between the upper housing 101 and the lower housing 102. The split-structure housing 10 is easy and quick to install and disassemble, simple to assemble, low in cost, and easy to maintain.

[0030] The drive assembly includes a stator assembly 111 fixedly installed inside the housing 1 and a rotor assembly 112 rotatably installed in the middle of the stator assembly 111. A rotating shaft 113 is fixedly connected to the middle of the rotor assembly 112. When the drive assembly is working, the stator assembly 111 is energized to generate a magnetic field that drives the rotor assembly 112 to rotate the rotating shaft 113. The rotating shaft 113 drives the impeller 133 to rotate at high speed, thereby realizing the drainage function.

[0031] The pump body 13 consists of an upper pump body 131 and a lower pump body 132 connected together. The inlet 14 and outlet 15 are both located on the lower pump body 132. A sealing structure is provided between the upper pump body 131 and the lower pump body 132. A water-blocking ring 103 is located inside the upper pump body 131. The split-structure pump body 13 is easy and quick to install and disassemble, simple to assemble, low in cost, and convenient to maintain.

[0032] The water-blocking ring 103 has an inner cavity 1030, and the waterproof baffle 12 is installed inside the inner cavity 1030. The waterproof baffle 12 has a mounting hole 120 at its central axis position, and the rotating shaft 113 passes through the mounting hole 120 and is fixedly connected to the waterproof baffle 12.

[0033] Furthermore, a waterproof cavity 1031 is formed between the waterproof baffle 12 and the top of the inner cavity 1030, preferably with a height d of 1.0-1.5 mm. Preferably, the distance e between the waterproof baffle 12 and the bottom plane of the water-blocking ring 103 is 0.5-1.0 mm, and the distance f between the side of the waterproof baffle 12 and the inner wall of the water-blocking ring 103 is 0.5-1.0 mm. The aforementioned distances d, e, and f satisfy the requirement for unobstructed rotation of the waterproof baffle 12 while ensuring waterproof performance.

[0034] This application also discloses an air conditioner that uses the aforementioned anti-backflow condensate drain pump, which has a low failure rate, low motor noise, and a better user experience.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A backwater-proof condensate drainage pump characterized by comprising: The application relates to a backwater-proof condensate water drainage pump, which comprises a shell, a driving assembly and a pump body, the driving assembly is arranged in the shell, the pump body is internally arranged with an impeller, the driving assembly is provided with a rotating shaft which extends into the pump body and is connected with the impeller; the bottom of the shell is provided with a downwardly-extending water-blocking ring, a circular waterproof baffle is arranged in the water-blocking ring, the rotating shaft penetrates through the water-blocking ring, the waterproof baffle is fixedly connected with the rotating shaft, the waterproof baffle is arranged in space with the inner wall of the water-blocking ring, and a waterproof cavity is formed between the waterproof baffle and the shell in the water-blocking ring.

2. The backwater-proof condensate drainage pump of claim 1, wherein, The water-blocking ring is internally provided with an inner cavity, and the waterproof baffle is arranged in the inner cavity through a mounting hole at the position of the central axis.

3. The backwater-proof condensate drainage pump according to claim 2, wherein The waterproof baffle and the top of the inner cavity form the waterproof cavity.

4. The backwater-proof condensate drainage pump according to claim 3, wherein The height of the waterproof cavity is 1.0-1.5 mm.

5. The backwater-proof condensate drainage pump according to claim 3, wherein The distance between the waterproof baffle and the bottom plane of the water-blocking ring is 0.5-1.0 mm.

6. The backwater-proof condensate drainage pump of claim 3, wherein, The distance between the waterproof baffle and the inner wall of the water-blocking ring is 0.5-1.0 mm.

7. The backwater-proof condensate drainage pump according to claim 1, wherein A bearing is arranged above the waterproof baffle and is fixedly connected around the rotating shaft.

8. The backwater-proof condensate drainage pump of claim 1, wherein, The shell is composed of an upper shell and a lower shell which are combined, the water-blocking ring is arranged at the bottom of the lower shell; the pump body is composed of an upper pump body and a lower pump body which are combined, the water-blocking ring is arranged in the upper pump body, and the lower pump body is provided with a water inlet and a water outlet.

9. The backwater-proof condensate drainage pump of claim 1, wherein, The driving assembly comprises a stator assembly which is fixedly arranged in the shell and a rotor assembly which is rotatably arranged in the middle part of the stator assembly, and the middle part of the rotor assembly is fixedly connected with the rotating shaft.

10. An air conditioner characterized by comprising: The backwater-proof condensate water drainage pump is adopted.

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