CN203835807U - Heating pump for dish washing machine and dish washing machine - Google Patents

Abstract

The utility model provides a heating pump for a dish washing machine and the dish washing machine with the heating pump. The heating pump for the dish washing machine comprises a pump shell, a motor, an impeller, a heating assembly and a pressure switch assembly, wherein a heating pump cavity is formed in the pump shell and is provided with an inlet and an outlet, the motor is provided with a rotary shaft and is connected with the pump shell, the rotary shaft stretches into the heating pump cavity, the impeller is located in the heating pump cavity and is installed on the rotary shaft, the impeller comprises a body part and an extending part, the diameter of the extending part is smaller than the diameter of the body part, the heating assembly comprises a heating tube, a fuse protector and a heating wire arranged inside the heating tube, and a pressure switch is installed on the outer wall of the pump shell and is connected with the heating assembly. The heating pump for the dish washing machine is small in size.

Description

Heat pumps and dishwashers for dishwashers

technical field

The utility model relates to the technical field of household appliances, in particular to a heat pump for a dishwasher and a dishwasher with the heat pump for a dishwasher.

Background technique

A fluid pump with a heating function usually includes an upper and lower pump casing, an impeller installed in the pump casing, a motor for driving the impeller to rotate, and a heating body for heating the fluid, etc. In several existing heat pumps, the heating body is installed inside the pump casing or is a part of the pump casing alone (such as the upper pump casing or the lower pump casing). The heating body installed inside the pump casing, such as an annular heating tube, needs to be wound Between the outside of the impeller and the pump casing, the volume of the pump casing increases and the pump efficiency decreases. At the same time, the safety protection device measures of the heating tube itself are missing, and it cannot pass the test under abnormal conditions, such as the dry heating test of the heating tube. In addition, the heating body is a part of the pump casing. Because the pump casing needs good sealing and heat resistance, the sealing structure of the pump casing and the heating tube is generally more complicated, and the overall cost of parts manufacturing and assembly is relatively high.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

Therefore, an object of the present utility model is to provide a heat pump for a dishwasher with high safety factor, few assembly parts, simple assembly and low cost.

Another object of the present utility model is to provide a dishwasher with the above-mentioned heat pump for a dishwasher.

According to the utility model, the heat pump for the dishwasher comprises: a pump casing, the pump casing has a heat pump chamber inside, and the heat pump chamber has an inlet and an outlet; a motor, the motor has a rotating shaft and is connected to the The pump casing is connected, and the rotating shaft extends into the heat pump chamber; the impeller is installed in the heat pump chamber and on the rotating shaft, and the impeller includes a body part and an extension part, and the extension part The diameter of the part is smaller than the diameter of the body part; the heating assembly, the heating assembly includes a heating tube, a fuse and a heating wire arranged in the heating tube, and the heating tube includes an arc section, a first straight section and a second section Two straight segments, the lower end of the first straight segment is connected to the first end of the arc segment, the lower end of the second straight segment is connected to the second end of the arc segment, and the heating tube The upper ends of the first straight section and the second straight section extend out of the pump casing, and the fuse is arranged in at least one of the first straight section and the second straight section Inner and away from the arc section, the arc section surrounds the extension and is spaced apart from the extension; a pressure switch assembly, the pressure switch is installed on the outer wall of the pump casing and connected to the heating Components are connected.

According to the heat pump for a dishwasher of the present invention, the arc section surrounds the extension part and is spaced apart from the extension part, and the fuse is arranged in the first straight section and the second straight section. At least one arc segment is inside and far away from the arc segment, thus, the length of the straight segment can be shortened to reduce the volume of the heat pump for the dishwasher according to the present invention.

In addition, the heat pump for a dishwasher according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

According to an example of the present invention, the heating wire is only arranged in the arc segment.

According to an example of the present invention, the heating assembly further includes a sealing sheet and a mounting pressing sheet, the upper ends of the first and second straight segments pass through the sealing sheet and the mounting pressing sheet, and the heating tube passes through the A seal plate and a mounting tab are mounted to the pump casing.

According to an example of the present invention, the outer wall of the pump casing is provided with a heating pipe installation part, the heating pipe installation part has a through hole, and the upper ends of the first straight line section and the second straight line section extend through the through hole Out, the sealing sheet and the installation pressing sheet clamp the wall of the pump casing and the sealing sheet and the installation pressing sheet pass through the sealing sheet, the wall of the pump casing and the installation in sequence The bolts of the pressing plate are fastened to the pump casing.

According to an example of the present invention, the heating assembly further includes a first connection terminal and a second connection terminal, the first connection terminal is arranged at the upper end of the first straight line segment and is connected to the heating wire through a first wire. The second connection terminal is arranged on the upper end of the second straight line segment and connected to the heating wire through a second wire, and the fuse is connected to at least one of the first and second wires.

According to an example of the present invention, the pump housing includes an upper pump housing and a lower pump housing detachably connected to each other, the inlet and the outlet are formed on the upper pump housing, and the heating pipe is arranged on the upper pump housing. In the pump casing, the upper pump casing is a flame-retardant upper pump casing.

According to an example of the present invention, the outer peripheral wall of the upper pump casing is provided with a plurality of buckles arranged at intervals along the circumferential direction of the upper pump casing, and the inner peripheral wall of the lower pump casing is provided with A plurality of buckles are matched and one-to-one corresponding to a plurality of card slots.

According to an example of the present invention, the upper surface of the buckle includes a slope section and a plane section.

According to an example of the present utility model, a sealing ring is provided between the upper pump casing and the lower pump casing, a sealing skeleton is provided between the lower pump casing and the impeller, and the rotating shaft passes through the sealing ring. skeleton.

The dishwasher according to the present utility model is characterized by comprising the heat pump for the dishwasher described in any one of the above.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

Fig. 1 is a schematic diagram of a heat pump for a dishwasher according to an embodiment of the present invention;

Fig. 2 is a schematic diagram of a heat pump for a dishwasher according to another embodiment of the present invention;

Fig. 3 is a schematic diagram of a heating assembly of a heating pump for a dishwasher according to an embodiment of the present invention;

4 is a schematic diagram of an upper pump housing of a heat pump for a dishwasher according to an embodiment of the present invention; and

Fig. 5 is a schematic diagram of a lower pump housing of a heat pump for a dishwasher according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

The heat pump for a dishwasher according to the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 to 5 , the heat pump for a dishwasher according to the present invention includes: a pump housing, a motor 20 , an impeller 30 , a heating assembly 40 , and a pressure switch assembly 50 .

Specifically, there is a heat pump chamber (not shown in the figure) inside the pump casing, and the heat pump chamber has an inlet 111 and an outlet 112 .

The motor 20 has a rotating shaft 201 and is connected to the pump casing. The rotating shaft 20 protrudes into the cavity of the heat pump.

The impeller 30 is installed in the heat pump cavity and on the rotating shaft 201 . The impeller 30 includes a body portion 301 and an extension portion 302 . The diameter of the extension part 302 is smaller than that of the main body part 301 .

As shown in FIG. 4 , the heating assembly 40 includes a heating tube 41 , a fuse 42 and a heating wire (not shown) disposed in the heating tube 41 .

The heating tube 41 includes an arc section 411 , a first straight section 412 and a second straight section 413 . The lower end of the first straight line segment 412 is in contact with the first end of the arc segment 411 . The lower end of the second straight segment 413 is in contact with the second end of the arc segment 411 . The heating pipe 41 is arranged in the cavity of the heating pump, and the upper ends of the first straight section 412 and the second straight section 413 extend out of the pump casing. The fuse 42 is disposed in at least one of the first straight section 412 and the second straight section 413 and away from the arc section 411 . The arc segment 411 surrounds the extension portion 302 and is spaced apart from the extension portion 302 .

Advantageously, the pump housing comprises an upper pump housing 11 and a lower pump housing 12 detachably connected to each other. An inlet 111 and an outlet 112 are formed on the upper pump casing 11 . The heating pipe 41 is arranged in the upper pump casing 11 . The upper pump casing 11 is a flame-retardant upper pump casing.

The pressure switch 50 is mounted on the outer wall of the pump casing and connected with the heating assembly 40 .

According to the heat pump for a dishwasher of the present invention, the arc section surrounds the extension part and is spaced apart from the extension part, and the fuse is arranged in the first straight section and the second straight section. At least one arc segment is inside and far away from the arc segment, thus, the length of the straight segment can be shortened to reduce the volume of the heat pump for the dishwasher according to the present invention. In addition, the heat pump used in the dishwasher according to the utility model has triple safety protection measures, namely, pressure switch protection, fuse protection, and pump housing flame-retardant protection. By connecting the pressure switch in series with the heating component, when there is a lack of water, the pressure switch does not act and the heating component is disconnected; if the pressure switch fails, the internal fuse of the heating component will protect it; since the upper pump casing is a flame-retardant upper pump casing, it can In the protection limit state, the heat pump will not catch fire, and the safety factor is high. The shape of the heating element is simple, the molding process is simple, and the material is less.

Advantageously, according to an example of the present invention, the heating wire is only arranged in the arc section 411 . Further, the heating assembly 40 also includes a sealing sheet 43 and an installation pressing sheet 44 . Upper ends of the first straight section 412 and the second straight section 413 pass through the sealing sheet 43 and the installation pressing sheet 44 . The heating tube 41 is installed on the pump casing through a sealing sheet 43 and a mounting pressing sheet 44 .

Further, as shown in FIG. 1 , according to an example of the present invention, a heating pipe installation part 103 is provided on the outer wall of the pump housing. The heating pipe installation portion 103 has a through hole 1031 . Upper ends of the first straight section 412 and the second straight section 413 extend through the through hole 1031 . The sealing sheet 43 and the installation pressing sheet 44 clamp the wall of the pump casing and the sealing sheet 43 and the installation pressing sheet 44 are fastened to the on the pump casing. Therefore, the installation is convenient and the sealing performance is good.

As shown in FIG. 4 , according to an example of the present invention, the heating assembly 40 further includes a first connection terminal 461 and a second connection terminal 462 . The first connection terminal 461 is disposed on the upper end of the first straight section 412 and connected to the heating wire through a first wire (not shown). The second connecting terminal 462 is disposed on the upper end of the second straight section 413 and connected to the heating wire through a second wire (not shown). A fuse 42 is connected to at least one of the first wire and the second wire.

As shown in FIG. 1 , according to an example of the present invention, the outer peripheral wall of the upper pump casing 11 is provided with a plurality of buckles 104 arranged at intervals along the circumferential direction of the upper pump casing 11 . As shown in FIG. 5 , the inner peripheral wall of the lower pump casing 12 is provided with a plurality of engaging grooves 121 that are adapted to and correspond to the plurality of buckles 104 . Advantageously, the upper surface of the buckle 104 includes a sloped section and a flat section. Thus, the upper pump casing 11 and the lower pump casing 12 can be matched more closely.

As shown in FIG. 1 and FIG. 2 , according to an example of the present invention, a sealing ring 60 is provided between the upper pump casing 11 and the lower pump casing 12 . A sealing frame 70 is provided between the lower pump casing 12 and the impeller 30 . The rotating shaft 201 passes through the sealing frame 70 .

According to the heating pump for dishwashers of the present utility model, the heating assembly is designed as a combination of an arc section and a straight section. uniform gap. At the same time, the length of the straight line section is sufficient to install a general-purpose fuse, which is better for controlling the installation cost of the heating element. In addition, the heating assembly is placed between the inlet and the impeller, and the inner diameter of the arc section is larger than the outer diameter of the impeller extension, so that the overall size of the pump casing can be designed smaller.

In addition, the axially involute scroll of the upper pump casing and the upwardly inclined scroll of the lower pump casing together form a scroll casing with excellent hydraulic performance, which improves the efficiency of the pump body. The fluid enters the impeller from the inlet, works through the rotating impeller, pushes upward to the involute volute of the pump casing, is heated by the arc section, and is pumped out from the outlet after being pressurized. Due to the high-speed rotation of the impeller inside the pump body, the fluid will do work through the rotation of the impeller, and the high-speed surface will fully contact and exchange heat with the surface of the arc section, and the heat exchange efficiency is high.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" The orientation or positional relationship indicated by , "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying the referred device Or elements must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, unless otherwise specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connection, or integration; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and should not be construed as limitations of the present invention, and those skilled in the art are within the scope of the present invention. Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (10)

1. for a heat pump for dishwasher, it is characterized in that, comprising:

Pump case, has heating pump chamber in described pump case, described heating pump chamber has import and outlet;

Motor, described motor has rotating shaft and is connected with described pump case, and described rotating shaft extend in described heating pump chamber;

Impeller, described impeller is in described heating pump chamber and be arranged in described rotating shaft, and described impeller comprises main body portion and extension part, and the diameter of described extension part is less than the diameter of described main body portion;

Heating module, described heating module comprises heating pipe, fus and be located at the heating wire in described heating pipe, described heating pipe comprises arcuate segment, the first straightway and the second straightway, the lower end of described the first straightway and the first end of described arcuate segment join, the second end of the lower end of described the second straightway and described arcuate segment joins, described heating pipe is located in described heating pump chamber, described pump case is extended in the upper end of described the first straightway and the second straightway, described fus is located at least one in described the first straightway and the second straightway and away from described arcuate segment, described arcuate segment is around described extension part and spaced apart with described extension part,

Pressure switch assembly, described pressure switch is arranged on the outer wall of described pump case and is connected with described heating module.

2. the heat pump for dishwasher according to claim 1, is characterized in that, described heating wire is only located in described arcuate segment.

3. the heat pump for dishwasher according to claim 1, it is characterized in that, described heating module also comprises diaphragm seal and compressing tablet is installed, the upper end of described the first and second straightways is through described diaphragm seal and compressing tablet is installed, and described heating pipe is installed on described pump case by described diaphragm seal and installation compressing tablet.

4. the heat pump for dishwasher according to claim 3, it is characterized in that, the outer wall of described pump case is provided with heating pipe assembly department, described heating pipe assembly department has through hole, extend through through hole the upper end of described the first straightway and the second straightway, described diaphragm seal and described installation piece pressing clip residence state the wall of pump case and described diaphragm seal and described installation compressing tablet by successively through described diaphragm seal, the wall of described pump case and the bolton of described installation compressing tablet to described pump case.

5. the heat pump for dishwasher according to claim 4, it is characterized in that, described heating module also comprises the first tenminal block and the second tenminal block, described the first tenminal block is located at the upper end of described the first straightway and is connected with described heating wire by the first wire, described the second tenminal block is located at the upper end of described the second straightway and is connected with described heating wire by the second wire, and described fus is connected at least one in described the first and second wires.

6. according to the heat pump for dishwasher described in any one in claim 1-5, it is characterized in that, described pump case comprises the upper pump case and the lower pump case that are removably connected each other, described import and outlet are formed on described upper pump case, described heating pipe is located in described upper pump case, and described upper pump case is fire-retardant upper pump case.

7. the heat pump for dishwasher according to claim 6, it is characterized in that, the periphery wall of described upper pump case is provided with the circumferential spaced apart multiple buckles along described upper pump case, and the inner circle wall of described lower pump case is provided with and one to one multiple draw-in grooves suitable with described multiple buckles.

8. the heat pump for dishwasher according to claim 7, is characterized in that, the upper surface of described buckle comprises bevel phase and planar section.

9. the heat pump for dishwasher according to claim 6, is characterized in that, between described upper pump case and described lower pump case, is provided with seal ring, between described lower pump case and described impeller, is provided with sealing framework, and described rotating shaft is through described sealing framework.

10. a dishwasher, is characterized in that, comprises according to the heat pump for dishwasher described in any one in claim 1-9.