Delivery pump and washing machine

Abstract

The invention discloses a delivery pump and a washing machine. The delivery pump comprises a pump body, an impeller and a driving part. The pump body is provided with a pump cavity, a water inlet, a water outlet and a circulation water gap, wherein the water inlet, the water outlet and the circulation water gap both communicate with the pump cavity. The impeller is located in the pump cavity. Thedriving part can drive the impeller to rotate forwardly and reversely. When the impeller rotates forwardly, the water inlet, the pump cavity and the circulation water gap are sequentially connected. When the impeller rotates reversely, the water inlet, the pump cavity and the water outlet are sequentially connected. According to the delivery pump disclosed by the invention, drainage of the washingmachine and delivery of circulation water can be achieved through the matching of the impeller and the pump cavity as well as the forward and reverse rotation of the impeller; and due to the fact that only one driving part is required in the delivery pump, cost is effectively reduced compared with the mode that two motors are needed for driving in the prior art. Meanwhile, the size of the whole delivery pump is reduced, so that transportation is facilitated and space occupancy is reduced. The number of positions needing to be sealed is also reduced, the probability of water leakage is loweredand the assembly of the washing machine is correspondingly simplified.

Description

technical field [0001] The invention relates to the technical field of washing machines, and more specifically, to a delivery pump and a washing machine. Background technique [0002] At present, in order to improve the cleaning power of the washing machine, the washing machine is additionally equipped with a foam cleaning function. For the washing machine with the foam cleaning function, it is necessary to utilize the delivery pump to realize the recycling of the water in the washing tub; and because the washing machine also has the drainage function, the pump structure of the washing machine with the foam cleaning function includes: a pump body 11, a first motor 12 and The second motor 13, such as figure 1 As shown, the pump body 11 has two pump chambers, a water inlet pipe 14 communicating with the two pump chambers, a drain pipe 15 communicating with one pump chamber, and a circulating water pipe 16 communicating with the other pump chamber. The motor 12 realizes the d...

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Problems solved by technology

[0003] However, the above-mentioned pump structure needs two motors, i.e. the first motor 12 and the second motor 13, resulting in higher cost

[0004] In addition, in the above pump structure, the pump body 11 has two pump chambers and requires two motors, resulting in a larger volume of the entire pump assembly and a larger space occupation

[0005] In addition, a sealed connection is required between the motor and the pump body 11. In the actual installation process, there are two motors, so there are many positions that need to be sealed, and the probability of water leakage is relatively high.

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