CN217772262U - Heating pump and dish washing machine with same - Google Patents

Abstract

The application provides a heating pump and a dishwasher with the heating pump, which comprises a heating assembly (1) and a shell (3), wherein the shell is provided with a chamber (30), the shell is fixed with the heating assembly, the heating assembly is partially positioned in the chamber, the heating pump also comprises a temperature detection element, the shell comprises a first fixing part (31) and a side wall part (32), the first fixing part is provided with a first mounting hole (310), the temperature detection element is at least partially positioned in the first mounting hole, the temperature detection element comprises a temperature sensing part (21), and the temperature sensing part is in direct contact with the shell; the temperature sensing part is at least partially positioned in the cavity; or the temperature sensing part is at least partially positioned in the first mounting hole, and the part of the first mounting hole, which accommodates at least part of the temperature sensing part, is communicated with the chamber. Through the fact that the temperature detection element at least partially extends into the cavity, or the temperature sensing part does not extend into the cavity but is communicated with the cavity in a fluid mode, the temperature control device can detect the temperature of the air in the shell and the air in the cavity at the same time, and safety of the pump is improved.

Description

Heating pump and dish washing machine with same

[ technical field ] A method for producing a semiconductor device

The present application relates to the field of household appliance technologies, and more particularly, to a heat pump and a dishwasher having the same.

[ background of the invention ]

The dish washing machine mainly outputs high-temperature and high-pressure water flow to wash the surface of tableware through cooperative work of the power system and the heating system, wherein the power system provides power for the water flow to form high pressure, and the heating system heats the water flow to form high temperature.

A heating pump integrated with a power system and a heating system comprises a shell, a power assembly and a heating assembly located outside the shell. In order to ensure the safety of the heating pump, a temperature controller is additionally arranged and is fixed with the heating assembly, and the heating assembly is controlled to be powered on or powered off according to the monitored temperature of the heating assembly, so that the heating assembly is prevented from being damaged due to overheating.

However, in a heating pump with a heating assembly disposed outside the housing, the temperature controller can only detect the heat transferred through the housing, but cannot detect the temperature of the inner chamber of the housing, and the monitoring point is single, which affects the safety of the heating pump.

[ summary of the invention ]

Providing a heating pump, which comprises a heating component and a shell, wherein the shell is provided with a cavity, the shell is fixed with the heating component, the heating component is at least partially positioned in the cavity, the heating pump also comprises a temperature detection element, the shell comprises a first fixing part and a side wall part, the first fixing part is provided with a first mounting hole, the temperature detection element is at least partially positioned in the first mounting hole, the temperature detection element comprises a temperature sensing part, and the temperature sensing part is at least partially in direct or indirect contact with the shell; the temperature sensing part is at least partially positioned in the chamber, or the temperature sensing part is positioned in the first mounting hole, and at least part of the temperature sensing part accommodated in the first mounting hole is communicated with the chamber.

The temperature detection element is at least partially positioned in the first mounting hole and at least partially extends into the cavity; or the temperature detection element is arranged in the mounting hole of the shell and is communicated with the cavity, the temperature detection element can directly monitor the temperature of the cavity and the temperature of the shell, so that the temperature of the shell and the temperature of the cavity can be monitored simultaneously, and the safety of the heating pump is guaranteed.

Drawings

FIG. 1 is a partial block diagram of a heat pump;

FIG. 2 is a top view of the heat pump;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of the first embodiment of FIG. 2;

FIG. 4 isbase:Sub>A sectional view taken along line A-A of the second embodiment in FIG. 2;

FIG. 5 isbase:Sub>A sectional view A-A of the housing;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 isbase:Sub>A sectional view taken along line A-A in the third embodiment.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is unnecessary for the features of the present application shown, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

As shown in fig. 3, 4 and 5, the heat pump of the present embodiment includes the following features: the heating pump comprises a heating assembly 1, a temperature detection element 2, a housing 3 and a control device, wherein the housing 3 is provided with a chamber 30, the housing 3 is used for fixing the heating assembly 1, and the heating assembly is at least partially positioned in the chamber 30.

The temperature detecting element 2 may be either a thermostat or a temperature sensor, or a combination of both. When the temperature detecting element 2 uses a temperature controller, the temperature controller is connected with the heating component in series and then is electrically connected with the control device; or the temperature controller and the heating component are respectively electrically connected with the control device. When the temperature detecting element 2 is a temperature sensor, the temperature sensor is electrically connected to the heating unit and the control device, respectively.

In the above components, the housing 3 includes a first fixing portion 31 and a side wall portion 32, the first fixing portion 31 has a first mounting hole 310, the temperature detecting element 2 is partially located in the first mounting hole 310, the temperature detecting element 2 includes a temperature sensing portion 21, the temperature sensing portion 21 is in heat conduction contact with the first fixing portion 31, and at least part of the temperature sensing portion is located in the cavity; or at least part of the temperature sensing part is positioned in the first mounting hole, and the part of the first mounting hole for accommodating at least part of the temperature sensing part is communicated with the chamber. The "heat conductive contact" may be that the temperature sensing part 21 is in direct contact with the first fixing part 31, or is in contact with the first fixing part through an intermediary, which may be a part of the housing, or other non-air or vacuum substance. "at least partially within the chamber" may be entirely within the chamber or partially within the chamber. The temperature sensing unit is a portion capable of sensing temperature.

In order to avoid misjudgment, the heating component 1 is not contacted with the temperature detection device, and the temperature of the heating component is prevented from being directly measured.

The beneficial effects of this embodiment lie in, set up at the casing through temperature-detecting element, and at least part stretches into in the cavity, or temperature-detecting element sets up in the mounting hole of casing, and temperature-detecting element and cavity intercommunication, temperature-detecting element can directly monitor the cavity temperature, and the casing temperature, the heat can pass through the casing, or the fluid in the cavity passes to temperature-detecting element, casing temperature and air temperature when realizing simultaneously monitoring dry combustion method, temperature-detecting element can preferentially monitor higher temperature, can be more accurate monitor the high temperature, prevent that the casing from warping, the security of guarantee heat pump.

Specifically, the temperature detecting element 2 uses a bimetallic strip type temperature controller with a cut-off temperature lower than 100 ℃, and the cut-off temperature can be 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃ or 100 ℃ or the like. The shell 3 is made of plastic and is molded in an injection molding mode.

The beneficial effects of this embodiment lie in that, the temperature detection component 2 uses the bimetallic strip temperature controller, can realize monitoring the situation of dry combustion method promptly, can also the disconnection power, avoids continuing to dry combustion method. The selected disconnection temperature is lower than 100 ℃, dry burning can be monitored, and meanwhile, whether the water temperature of the heating pump exceeds a standard value limited by the heating pump can be judged, for example, the heating pump is limited to 75 ℃, then, when the water temperature reaches 75 ℃, the bimetallic strip type temperature controller is also disconnected, and therefore the water temperature is prevented from exceeding the limit value. The shell 3 is made of plastic and is molded in an injection molding mode, so that a more complex structure can be molded, and the material and processing cost is reduced.

Specifically, the temperature sensing part 21 is at least partially located in the cavity 30, the temperature detecting element 2 includes a temperature sensing cladding 22, the temperature sensing cladding 22 at least partially surrounds the temperature sensing part 21, the temperature sensing part includes a first temperature sensing section 211 and a second temperature sensing section 212 which are connected with each other, the first fixing part 31 has a first mounting hole 310, and the first temperature sensing section 211 is at least partially located in the first mounting hole 310, directly or indirectly contacts with the housing 3, and directly or indirectly contacts with the first fixing part; the second temperature sensing section 212 is located within the chamber 30 and is in contact with the fluid within the chamber.

The phrase "at least partially located in the first mounting hole" includes that the temperature sensing part is partially located in the first mounting hole 310, or is entirely located in the mounting hole 310.

The beneficial effect of this embodiment is that the first temperature sensing section 211 is abutted with the first mounting hole 310 of the first fixing portion 31, so as to monitor the temperature of the housing 3; the second temperature sensing section 212 extends into the chamber 30 to monitor the air temperature during dry burning.

The heating assembly 1 comprises a connecting section 11 and a heating section 12, the side wall portion 32 comprises a cylindrical shell 321, the cylindrical shell 321 having an axial extension direction y-y; in the axial extension direction y-y, the second temperature-sensing section 212 is at least partially disposed within the thickness interval of the heating section 12, and the distance between the second temperature-sensing section 212 and the heating section 12 is less than 1.5 times the distance between the heating section 12 and the sidewall 32.

The connection section 11 is a portion directly connected to the housing 3, which generates a small amount of heat relative to the heating section 12. The heating section 12 is a portion that generates a large amount of heat and is mainly used for heating water, and is not directly connected to the housing 3. The thickness interval refers to the thickness of the component in the axial extension direction. The distance between the second temperature-sensing section 212 and the heating section 12 is a straight line distance in which one point is arbitrarily selected from the second temperature-sensing section 212 and the heating section 12, and the two points are connected to form a straight line, and the length of the straight line is the shortest. The distance between the heating zone 12 and the side wall portion 32 is a straight line distance in which one point is arbitrarily selected on each of the heating zone 12 and the side wall portion 32 and the two points are connected to form a straight line, and the length of the straight line is the shortest.

The beneficial effects of this embodiment lie in, the heating element 1 generates heat more mainly heating section 12, therefore, temperature-detecting element 2 sets up in the interval that heating section 12 is exothermic more, and the high temperature point of measurement that just can be better, more accurate prevent that the heat pump from burning futilely, guarantee heat pump safety.

In particular, the heating section 12 comprises a first helical section 121 and a second helical section 122, the heating section 12 having a thickness T, wherein, in the axial extension direction (y-y), said first fixation portion (31) and second temperature-sensitive section 212 are located between the first helical section 121 and the second helical section 122. The distance between the second temperature-sensing section 212 and the heating section 12 is smaller than the distance between the heating section 12 and the sidewall 32; or outside the first and second spiral sections 121 and 122 by a distance of less than 0.6T. The thickness T is a distance between the two horizontal lines drawn by the highest end point and the lowest end point of the heating section 12 in the axial extending direction y-y.

The beneficial effect of this embodiment is that, when the heating section 12 has two spiral sections, the temperature sensing element is disposed at the middle position, and can receive the heat emitted by the two heating sections at the same time, and receive a higher temperature, that is, measure the overtemperature of dry combustion more quickly.

Specifically, the temperature detecting element 2 includes a temperature sensing cladding 22, a temperature sensing distance L is provided between the temperature sensing cladding 22 and the heating section 12, a safety distance M is provided between the housing 3 and the heating section 12, and the temperature sensing distance L is smaller than the safety distance M.

The temperature sensing distance L is a linear distance in which the temperature sensing element extends into the temperature sensing envelope 22 in the housing, and one point is arbitrarily taken on each of the heating section 12 and the temperature sensing envelope 22 to connect the two points into a straight line, and the length of the straight line is the shortest.

The safety distance M is a straight line distance in which one point is arbitrarily selected from the casing 3 and the heating section 12, and the two points are connected to form a straight line, and the length of the straight line is the shortest.

The beneficial effect of this embodiment lies in, through setting for temperature sensing cladding 22 to be closer to heating section 12 for temperature-detecting element 2 is preferred to be monitored, and the higher temperature of air direct transfer, rather than the air passes through the casing, and the lower temperature of transmission monitors out the condition of dry combustion method in advance, cuts off the power supply in advance, ensures the heat pump safety.

Specifically, the protruding distance N of the temperature sensing envelope 22 protruding from the housing 3 is 3mm to 30mm, and the specific value may be 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 20mm or 30mm, etc., and the temperature sensing distance L is 3mm to 30mm, and the specific value may be 3mm, 5mm, 8mm, 10mm, 12mm, 15mm, 20mm or 30mm, etc.

The projection distance N is the closest distance between the rightmost end point on the axis x-x of the temperature sensitive cladding 22 and any point on the housing. The axis x-x is a line segment which is drawn in the direction of the vector with the longest distance between any two points on the second temperature sensing section.

The beneficial effect of this embodiment is that, by limiting the minimum value of the distance that the temperature sensing envelope 22 protrudes out of the shell, the temperature sensing envelope 22 is prevented from not detecting the temperature of the air; meanwhile, the maximum value of the distance of the temperature sensing cladding 22 protruding out of the shell is set, so that the temperature sensing cladding 22 is prevented from obstructing the water flow. By setting the minimum value of the temperature sensing cladding 22 and the heating section 12, the temperature sensing cladding 22 is prevented from directly measuring the temperature of the heating section 12 to cause misjudgment; meanwhile, the maximum values of the temperature sensing cladding 22 and the heating section 12 are set, so that the situation that too far away is avoided, the monitored air temperature is too low, and the monitoring value is low is avoided.

As shown in fig. 4 and 6, in particular, the housing 3 includes a water outlet portion 33, and the first fixing portion 31 and the water outlet portion 33 are located on two sides of the housing 3. The term "water outlet" refers to a portion of the sidewall 32 that forms a water outlet, and a small segment that is connected to an external pipe. "on both sides" means that the projection of the sidewall 32 along the axial extension direction y-y is substantially circular, and the distance between the first fixing portion 31 and the water outlet portion 33 on the projection "circular" is larger than the radius of the circle, so as to satisfy the requirement of both sides, and the first fixing portion 31 and the water outlet portion 33 can be disposed upward or downward on the axial extension direction y-y.

This embodiment has the advantage that by arranging the first fixing portion 31 away from the water outlet portion 33, it is ensured that the measured temperature point on the housing 3 is more toward the highest. The reason is that, when the heating pump is operated by dry burning, the heating pump drives the gas to flow, the water outlet 33 is used as a gas outlet, so that the heat on the heating component 1 around the water outlet 33 and the housing can be more easily taken away, the temperature of the heating component 1 around the water outlet 33 and the temperature of the housing 3 can be reduced, and if the first fixing portion 31 and the water outlet 33 are arranged on the same side, the measured temperature is extremely easy to be too low. If the first fixing portion 31 is far away from the water outlet portion 33, the heating pump can be more accurately prevented from being burnt, and the safety of the heating pump is guaranteed.

As shown in fig. 7, specifically, the housing 3 includes a side wall portion 32, the temperature detection element 2 includes a temperature sensing cladding 22, and the temperature sensing cladding 22 does not protrude from an inner surface of the side wall portion 32.

This embodiment has the advantage that the temperature sensing cladding 22 does not protrude from the inner surface of the side wall portion 32, so that the resistance of the temperature sensing element 2 to water flow can be reduced.

Specifically, the side wall portion 32 and the water outlet portion 33 are integrally injection-molded.

The beneficial effects of this embodiment are that, better guarantee casing 3 leakproofness reduces material cost, and the technology cost simultaneously.

As shown in fig. 6 and 7, in particular, the housing 3 includes a first fixing portion 31, the first fixing portion 31 includes a fixing area 311, a sealing ring 312 and a pressing block 313, the sealing ring 312 is circumferentially abutted against the temperature sensing cladding 22 and the fixing area 311, and the pressing block 313 presses the sealing ring 312 and is fixed by the fixing area 311.

The advantage of this embodiment is that the seal ring 312 is tightly pressed around the temperature sensing cladding 22 and the fixing region 311 to block the gap between the temperature sensing cladding 22 and the fixing region 311, thereby preventing water leakage.

Specifically, the first fixing portion 31 includes a clamping member 314, the fixing region 311 includes a clamping protrusion 3111, one end of the pressing block 313 is pressed against the sealing ring 312 by the clamping member 314, wherein the clamping member is fixed on the fixing region 311; the other end is pressed against the seal ring 312 by the engaging protrusion 3111. Wherein, the clamping protrusion 3111 uses a groove, and the clamping member 314 adopts a screw tightening structure.

The beneficial effects of this embodiment are that, the clamping protrusion 3111 is disposed on the fixing region 311, so that the number of screws is effectively reduced, and the cost is reduced.

The dishwasher of the embodiment at least uses the heating pump with any one of the characteristics, thereby effectively ensuring the safety of the washing machine.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. A heat pump comprising a heating assembly (1) and a housing (3), said housing (3) having a chamber (30), said housing (3) being secured to said heating assembly (1), said heating assembly being located at least partially within said chamber (30), characterized in that:

the heating pump further comprises a temperature detection element (2), the housing (3) comprises a first fixing part (31) and a side wall part (32), the first fixing part (31) is provided with a first mounting hole (310), the temperature detection element (2) is at least partially positioned in the first mounting hole (310), the temperature detection element (2) comprises a temperature sensing part (21), and the temperature sensing part (21) is at least partially in direct or indirect contact with the housing (3);

the temperature sensing part (21) is at least partially positioned in the chamber (30); or the temperature sensing part (21) is at least partially positioned in the first mounting hole (310), and a part of the first mounting hole (310) accommodating at least part of the temperature sensing part is communicated with the chamber (30).

2. A heat pump according to claim 1, wherein the temperature sensing portion (21) is located at least partially within the chamber (30), the temperature sensing portion (21) comprising a first temperature sensing section (211) located within the first mounting hole (310) and in direct or indirect contact with the housing (3) and a second temperature sensing section (212) located within the chamber (30).

3. A heat pump according to claim 2, characterized in that the heating assembly (1) comprises a connecting section (11) and a heating section (12), the side wall portion (32) comprising a cylindrical housing (321), the cylindrical housing (321) having an axial extension direction (y-y); in the axial extension direction (y-y), the distance between the second temperature-sensing section (212) and the heating section (12) is less than 1.5 times the distance between the heating section (12) and the side wall portion (32).

4. A heat pump according to claim 3, wherein the heating section (12) comprises a first spiral section (121) and a second spiral section (122), the heating section (12) having a thickness T, in the axial extension direction (y-y), the first mounting hole (310) being located between the first spiral section (121) and the second spiral section (122); or outside the first spiral section (121) and the second spiral section (122) by a distance less than 0.6T.

5. A heat pump according to claim 2, wherein the temperature detecting element (2) comprises a temperature sensing cladding (22), the temperature sensing cladding (22) having a temperature sensing distance L from the heating section (12), the housing (3) having a safety distance M from the heating section (12), the temperature sensing distance L being smaller than the safety distance M.

6. The heat pump of claim 2, wherein the temperature detecting element (2) includes a temperature sensing covering (22), the temperature sensing covering (22) covers the temperature sensing portion (21), the housing (3) includes a water outlet portion (33), the first fixing portion (31) and the water outlet portion (33) are substantially located on two sides of the housing (3), the housing (3) is made of plastic, the side wall portion (32) and the water outlet portion (33) are integrally injection-molded, the temperature sensing portion (21) is a bi-metal sheet temperature sensor, a protruding distance of the temperature sensing covering (22) protruding from the housing is 3-30 mm, and a temperature sensing distance is provided between the temperature sensing covering (22) and the heating section (12), and the temperature sensing distance is 3-30 mm.

7. A heat pump according to claim 1, wherein the housing (3) includes a side wall portion (32), and the temperature detecting element (2) includes a temperature sensitive cladding (22), and the temperature sensitive cladding (22) does not protrude from an inner surface of the side wall portion (32).

8. A heat pump according to claim 2, wherein the housing (3) comprises a first fixing portion (31), the first fixing portion (31) comprises a fixing area (311), a sealing ring (312) and a pressing block (313), the sealing ring (312) is circumferentially abutted against the temperature sensing cladding (22) and the fixing area 311, and the pressing block (313) presses the sealing ring (312) and is fixed by the fixing area (311).

9. A heat pump according to claim 8, characterized in that the first fastening part (31) comprises a clamping part (314), the fastening area (311) comprises a clamping protrusion (3111), one end of the pressing block (313) is pressed against the sealing ring (312) by the clamping part (314), and the other end is pressed against the sealing ring (312) by the clamping protrusion (3111).

10. A dishwasher, characterized by comprising a heat pump of any one of claims 1 to 9.

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