A cleaning machine and a cleaning method using the same

Abstract

The present invention relates to a cleaning machine, comprising a water tank body and a heat exchanger. The water tank body is provided with a water inlet and a water outlet. The water outlet is connected to a first traction valve capable of discharging the water. The first traction valve is connected to a drainage pipe. The water tank body is also provided with a heating plate capable of heating the water in the water tank body. The heat exchanger is arranged outside the water tank body and has a cold water chamber and a hot water chamber that are independent and capable of exchanging heat with each other. The hot water chamber is connected to the first traction valve through a pipe. The bottom of the hot water chamber is also connected to a second traction valve capable of discharging the hot water. The cold water chamber is respectively connected to a cold water supply mechanism and the water inlet of the water tank body through a pipe. When the cleaning machine performs the second and third water cleaning, the first water is used to preheat the fourth water, which not only effectively improves the energy utilization rate and reduces the energy consumption required for heating the fourth water, but also does not require additional preheating time during the entire preheating process, effectively saving electric energy.

Description

Technical Field

[0001] The invention relates to a cleaning machine and a cleaning method using the cleaning machine. Background Art

[0002] As people's living standards continue to improve, dishwashers, as a kitchen appliance, are increasingly entering households. Currently, dishwashers on the market are generally divided into three types: desktop, cabinet, and tank. Among them, desktop dishwashers are integrated independent structures and are generally placed on the table for use; cabinet dishwashers are also independent structures, but need to be embedded in kitchen cabinets for use; tank dishwashers are combined with sinks and are generally installed in kitchen cabinets for use.

[0003] For example, the structure disclosed in the Chinese patent "Sink-type cleaning machine" (application number: CN201310749864.9) with authorization announcement number CN103735237B, the sink-type cleaning machine includes a box body forming a washing space, the box body includes a sink body, the sink body is concave at least in the central part, the concave part is covered with a drain plate with the same shape as the concave part, the drain plate is provided with a plurality of drain holes for draining water, the space between the concave part and the drain plate forms a drain area, the drain plate is flush with other parts of the bottom of the sink body, and a water pump is provided in the drain area to pump water out of the drain area to the top of the drain plate. At present, when the above-mentioned sink-type cleaning machine is used to wash dishes, in order to better remove stains in the tableware, it is generally necessary to heat the water during the dishwashing process. The power consumed by the motor is generally below 100W, while the power of the heating plate of the sink body is between 1600W and 1800W. It can be seen that the heating plate consumes most of the energy during the operation of the dishwasher. Generally, four streams of water will enter during the dishwashing process. The first and last streams of water will be heated to about 60-70 degrees Celsius by the heating plate. The second and third streams of water are not heated, and the first stream of water is generally drained directly after washing. These hot waters with higher water temperatures contain considerable energy, resulting in a large waste of energy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning machine which can recycle the heat of the first water inlet of the cleaning machine so as to improve the energy utilization rate and reduce the energy consumption in view of the current status of the prior art.

[0005] Another technical problem to be solved by the present invention is to provide a cleaning method using the above-mentioned cleaning machine that can recover the heat of the first water inlet of the cleaning machine and preheat the fourth water inlet to improve energy utilization and reduce energy consumption in response to the current status of the existing technology.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a cleaning machine, including a sink body, the sink body is provided with a water inlet and a water outlet, the water outlet is connected to a first traction valve capable of discharging the water, the first traction valve is connected to a drainage pipe, the sink body is also provided with a heating plate capable of heating the water in the sink body, and is characterized in that: it also includes a heat exchanger, the heat exchanger is arranged outside the sink body and has independent cold water chamber and hot water chamber that can exchange heat with each other, the hot water chamber is connected to the first traction valve through a pipe, the bottom of the hot water chamber is also connected to a second traction valve capable of discharging hot water, and the cold water chamber is respectively connected to the cold water supply mechanism and the water inlet of the sink body through a pipe.

[0007] In the above solution, the hot water chamber is arranged in the middle of the heat exchanger, the cold water chamber is arranged around the outer edge of the hot water chamber, and a plurality of heat exchange fins are arranged at intervals on the inner wall of the cold water chamber close to the hot water chamber. With such a structure, while achieving rapid heat exchange, it is easy to discharge the first water with a higher degree of dirtiness.

[0008] Preferably, the heat exchanger comprises a body and a top cover, wherein the middle part of the body is hollow to form the hot water chamber, the bottom of the hot water chamber is provided with a first water outlet connected to the second traction valve, the cold water chamber is provided on the body around the outer edge of the hot water chamber, a plurality of heat exchange fins extending in the depth direction of the cold water chamber are arranged at intervals on the inner wall of the cold water chamber close to the hot water chamber, a first water inlet for cold water to enter the cold water chamber is provided on the side wall of the body, a second water outlet for preheated water to be output is provided at the bottom of the cold water chamber, the top cover is detachably provided on the top of the body and closes the hot water chamber and the cold water chamber, and the top cover is provided with a second water inlet for hot water to be input into the hot water chamber. The above structure facilitates the discharge of the first water, the input of the fourth water into the heat exchanger for preheating and the input into the cleaning machine for the fourth cleaning process; the top cover is detachably connected to the body by screws, and after a period of use, the top cover can be removed to clean the dirt of the hot water chamber containing the first water, so as to maintain a good heat exchange effect.

[0009] In order to facilitate the first water to be delivered to the heat exchanger, an auxiliary outlet for delivering hot water to the heat exchanger is opened on the side wall of the first traction valve, and a water pump that can provide power for the delivery of hot water is arranged on the auxiliary outlet.

[0010] Preferably, the auxiliary outlet is provided with a filter that can filter food residues carefully. The inner wall of the filter is formed into a curved surface structure that matches the curved inner wall of the first traction valve. In the assembled state, the inner wall of the filter and the inner wall of the first traction valve form a smooth transition inner wall surface. Since there is a certain amount of dirt in the first water, filtering is beneficial to improving the heat exchange effect; and setting the surface of the filter to a curved surface can form a unified whole with the curved inner wall of the first traction valve. Even if dirt accumulates on the filter, it is easy to remove it under the flushing of the second water, the third water, and the fourth water, so as to keep the filter clean and have a good filtering effect.

[0011] Preferably, a water tank is arranged at a distance from the water tank body on one side of the water tank body, the bottom wall of the water tank is higher than the bottom wall of the water tank body, and the heat exchanger is arranged at the bottom of the water tank. The heat exchanger is arranged here to effectively utilize the space.

[0012] In order to facilitate the control of water inflow, a control valve capable of controlling water inflow from a cold water supply mechanism or a heat exchanger is provided on the water inlet side of the water tank body.

[0013] A cleaning method using the above cleaning machine is characterized by comprising the following steps:

[0014] (1) The cleaning machine is started, and the cold water supply mechanism supplies the first water into the water tank body through the water inlet on the water tank body, and the heating plate heats and cleans the first water until the first cleaning process is completed;

[0015] (2) The first traction valve remains closed, the first water is fed into the hot water chamber of the heat exchanger, and the fourth water is fed into the cold water chamber of the heat exchanger for heat exchange; while the first water and the fourth water are exchanging heat, the second water and the third water enter the water tank body through the water inlet on the water tank body in sequence for the second cleaning process and the third cleaning process;

[0016] (3) After the third cleaning process is completed, the fourth water preheated in the cold water chamber of the heat exchanger is transported to the water tank body through the water inlet on the water tank body, and the water in the hot water chamber of the heat exchanger is discharged through the second traction valve. The fourth water entering the water tank body is further heated to the required temperature by the heating plate, completing the fourth cleaning process;

[0017] (4) Open the first traction valve to discharge the fourth stream of water to complete the cleaning process.

[0018] Preferably, the capacity of the cold water chamber of the heat exchanger is equal to or less than the volume of the fourth water required in the water tank body. When the capacity of the cold water chamber of the heat exchanger is less than the volume of the fourth water required in the water tank body, after the fourth water is transported to the water tank body, cold water is added to the water tank body through the cold water supply mechanism to meet the volume requirement of the fourth water.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the present invention is provided with a heat exchanger which can recover the heat of the first water and preheat the fourth water. When the cleaning machine is cleaning with the second water and the third water, the first water is used to preheat the fourth water, which not only effectively improves the energy utilization rate and reduces the energy consumption required for heating the fourth water, but also does not require additional preheating time for the entire preheating process. Experiments have confirmed that, based on a water intake of about 0.6L per water, the present invention can save about 20% of electrical energy for a cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure from another angle;

[0022] Figure 3 It is a structural schematic diagram of a heat exchanger in an embodiment of the present invention;

[0023] Figure 4 for Figure 3 A schematic diagram of the structure from another angle;

[0024] Figure 5 for Figure 3 Exploded diagram of

[0025] Figure 6 It is a partial structural schematic diagram of the first traction valve in an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 6As shown, the washing machine of this embodiment includes a water tank body 1 and a heat exchanger 2. The water tank body 1 is hollow inside to form a washing space. A water inlet 11 for supplying water into the water tank 1 is provided on the side wall of the water tank body 1, and a water outlet 12 for discharging waste water is provided at the bottom of the water tank body 1. A first traction valve 13 for discharging the water is connected to the water outlet 12, and a drainage pipe 14 is connected to the first traction valve 13. A heating plate 15 for heating the water in the water tank body 1 is also provided on the water tank body 1. The heat exchanger 2 is arranged outside the water tank body 1 and has a cold water chamber 21 and a hot water chamber 22 that are independent and can exchange heat with each other. The hot water chamber 22 is connected to the first traction valve 13 through a pipe, and a second traction valve 23 for discharging hot water is also connected to the bottom of the hot water chamber 22. The cold water chamber 21 is connected to a cold water supply mechanism (not shown) and the water inlet 11 of the water tank body 1 through pipes. In order to facilitate the control of water inflow, a control valve capable of controlling the water inflow from the cold water supply mechanism or the heat exchanger 2 is provided on the side of the water inlet 11 of the water tank body 1 .

[0028] The hot water chamber 22 of this embodiment is arranged in the middle of the heat exchanger 2, and the cold water chamber 21 is arranged around the outer edge of the hot water chamber 22. A plurality of heat exchange fins 24 are arranged at intervals on the inner wall of the cold water chamber 21 close to the hot water chamber 22. With such a structure, it is convenient to discharge the first water with a high degree of dirtiness while realizing rapid heat exchange. Specifically, the heat exchanger 2 of this embodiment includes a body 25 and a top cover 26. The middle of the body 25 is hollow inside to form the hot water chamber 22. The bottom of the hot water chamber 22 is provided with a first water outlet 221 connected to the second traction valve 23. The cold water chamber 21 is arranged on the body 25 around the outer edge of the hot water chamber 22. A plurality of heat exchange fins 24 extending along the depth direction of the cold water chamber are arranged at intervals on the inner wall of the cold water chamber 21 close to the hot water chamber 22. A first water inlet 211 for cold water to enter the cold water chamber 21 is provided on the side wall of the body 25, and a second water outlet 212 for preheated water to be output is provided at the bottom of the cold water chamber 21. The top cover 26 is detachably connected to the top of the body 25 by screw connection and closes the hot water chamber 22 and the cold water chamber 21. The top cover 26 is provided with a second water inlet 222 for hot water to be input into the hot water chamber 22. The above structure facilitates the discharge of the first water, the input of the fourth water into the heat exchanger 2 for preheating and the input into the water tank body 1 for the fourth cleaning process; the top cover 26 is detachably connected to the body 25 by screws, and after a period of use, the top cover 26 can be removed to clean the dirt in the hot water chamber 22 containing the first water, so as to maintain a good heat exchange effect.

[0029] In order to facilitate the first water to be delivered to the heat exchanger 2, an auxiliary outlet 131 for hot water to be delivered to the heat exchanger 2 is provided on the side wall of the first traction valve 13. A water pump 132 is provided on the auxiliary outlet 131 to provide power for the delivery of hot water. A filter 133 is provided on the auxiliary outlet 131 to filter food residues. The inner wall of the filter 133 is formed into an arc surface structure matching the arc inner wall of the first traction valve 13. In the assembled state, the inner wall of the filter 133 and the inner wall of the first traction valve 13 form a smooth transition inner wall surface. Since there is a certain amount of dirt in the first water, filtering is beneficial to improving the heat exchange effect; and the surface of the filter 133 is set as an arc surface, so that it can form a unified whole with the arc inner wall of the first traction valve 13. Even if dirt accumulates on the filter 133, it is easy to remove it under the flushing of the second water, the third water, and the fourth water, so as to keep the filter 133 clean and have a good filtering effect.

[0030] A water tank 3 is arranged at a distance from the water tank body 1 on one side of the water tank body 1. The bottom wall of the water tank 3 is higher than the bottom wall of the water tank body 1. The heat exchanger 2 is arranged at the bottom of the water tank 3. The heat exchanger 2 is arranged here to effectively utilize the space.

[0031] The cleaning method using the above-mentioned cleaning machine in this embodiment includes the following steps:

[0032] (1) The cleaning machine is started, and the cold water supply mechanism supplies the first water into the water tank body 1 through the water inlet 11 on the water tank body 1, and the heating plate 15 heats and cleans the first water until the first cleaning process is completed;

[0033] (2) The first traction valve 13 remains closed, the water pump 132 delivers the first water to the hot water chamber 22 of the heat exchanger 2, and the cold water supply mechanism delivers the fourth water to the cold water chamber 21 of the heat exchanger 2 for heat exchange; while the first water and the fourth water are exchanging heat, the second water and the third water enter the water tank body 1 through the water inlet 11 on the water tank body 1 in sequence for the second cleaning process and the third cleaning process;

[0034] (3) After the third cleaning process is completed, the preheated fourth water in the cold water chamber 21 of the heat exchanger 2 is delivered to the water tank body 1 through the water inlet 11 on the water tank body 1, and the water in the hot water chamber 22 of the heat exchanger 2 is discharged through the second traction valve 23. If the volume of the fourth water entering the water tank body 1 is less than the water volume required for normal cleaning, cold water is added to the water tank body 1 through the cold water supply mechanism to meet the volume requirement of the fourth water. The fourth water is further heated to the required temperature through the heating plate 15, and the fourth cleaning process is completed;

[0035] (4) Open the first traction valve 13 to discharge the fourth stream of water, completing the cleaning process.

[0036] The present embodiment is provided with a heat exchanger 2 which can recover the heat of the first water and preheat the fourth water. When the cleaning machine is cleaning with the second and third water, the first water is used to preheat the fourth water, which not only effectively improves the energy utilization rate and reduces the energy consumption required for heating the fourth water, but also does not require additional preheating time for the entire preheating process. Experiments have confirmed that, based on a water intake of about 0.6L per water, the cleaning machine of the present embodiment can save about 20% of electrical energy for a cleaning process.

Claims

1. A cleaning machine, comprising a water tank body (1), the water tank body (1) being provided with a water inlet (11) and a water outlet (12), the water outlet (12) being connected to a first traction valve (13) capable of discharging water, the first traction valve (13) being connected to a drainage pipe (14), the water tank body (1) being further provided with a heating plate (15) capable of heating water in the water tank body (1), characterized in that: The heat exchanger (2) is arranged outside the water tank body (1) and has a cold water chamber (21) and a hot water chamber (22) which are independent and can exchange heat with each other. The hot water chamber (22) is connected to a first traction valve (13) through a pipeline. The bottom of the hot water chamber (22) is also connected to a second traction valve (23) capable of discharging hot water. The cold water chamber (21) is connected to a cold water supply mechanism and a water inlet (11) of the water tank body (1) through pipelines. The hot water chamber (22) is arranged in the middle of the heat exchanger (2), the cold water chamber (21) is arranged around the outer edge of the hot water chamber (22), and a plurality of heat exchange fins (24) are arranged at intervals on the inner wall of the cold water chamber (21) close to the hot water chamber (22); The heat exchanger (2) comprises a body (25) and a top cover (26); the middle of the body (25) is hollow to form the hot water chamber (22); the bottom of the hot water chamber (22) is provided with a first water outlet (221) connected to the second traction valve (23); the cold water chamber (21) is arranged on the body (25) around the outer edge of the hot water chamber (22); a plurality of cold water chambers (21) are arranged at intervals on the inner wall of the cold water chamber (21) close to the hot water chamber (22) along the depth direction of the cold water chamber (21) The heat exchange plate (24) extends toward the hot water chamber (22), the side wall of the body (25) is provided with a first water inlet (211) for cold water to enter the cold water chamber (21), the bottom of the cold water chamber (21) is provided with a second water outlet (212) for preheated water to be output, the top cover (26) is detachably arranged on the top of the body (25) and closes the hot water chamber (22) and the cold water chamber (21), and the top cover (26) is provided with a second water inlet (222) for hot water to enter the hot water chamber (22); An auxiliary outlet (131) for supplying hot water to the heat exchanger (2) is provided on the side wall of the first traction valve (13), and a water pump (132) capable of providing power for the transportation of hot water is provided on the auxiliary outlet (131).

2. The cleaning machine according to claim 1, characterized in that: The auxiliary outlet (131) is provided with a filter net (133) capable of filtering food residues.

3. The cleaning machine according to claim 2, characterized in that: The inner wall of the filter screen (133) is formed into an arc surface structure matching the arc-shaped inner wall of the first traction valve (13); in the assembled state, the inner wall of the filter screen (133) and the inner wall of the first traction valve (13) form an inner wall surface with a smooth transition.

4. The cleaning machine according to any one of claims 1 to 3, characterized in that: A water tank (3) is arranged at a distance from the water tank body (1) on one side of the water tank body (1); the bottom wall of the water tank (3) is higher than the bottom wall of the water tank body (1); and the heat exchanger (2) is arranged at the bottom of the water tank (3).

5. The cleaning machine according to any one of claims 1 to 3, characterized in that: A control valve capable of controlling water inflow from a cold water supply mechanism or a heat exchanger (2) is provided on the water inlet (11) side of the water tank body (1).

6. A cleaning method using the cleaning machine according to any one of claims 1 to 5, characterized in that: The following steps are included (1) The cleaning machine is started, and the cold water supply mechanism supplies a first stream of water into the water tank body (1) through the water inlet (11) on the water tank body (1), and the heating plate (15) heats and cleans the first stream of water until the first stream of cleaning process is completed; (2) The first traction valve (13) remains closed, the first water is supplied to the hot water chamber (22) of the heat exchanger (2), and the fourth water is supplied to the cold water chamber (21) of the heat exchanger (2) for heat exchange; while the first water and the fourth water are exchanging heat, the second water and the third water are sequentially supplied to the water tank body (1) through the water inlet (11) on the water tank body (1) for the second cleaning process and the third cleaning process; (3) After the third cleaning process is completed, the fourth water preheated in the cold water chamber (21) of the heat exchanger (2) is transported to the water tank body (1) through the water inlet (11) on the water tank body (1), and the water in the hot water chamber (22) of the heat exchanger (2) is discharged through the second traction valve (23). The fourth water entering the water tank body (1) is further heated to the required temperature by the heating plate (15), completing the fourth cleaning process; (4) Open the first traction valve (13) to discharge the fourth stream of water, completing the cleaning process.

7. The cleaning method according to claim 6, characterized in that: The capacity of the cold water chamber (21) of the heat exchanger (2) is equal to or less than the volume of the fourth stream of water required in the water tank body (1). When the capacity of the cold water chamber (21) of the heat exchanger (2) is less than the volume of the fourth stream of water required in the water tank body (1), after the fourth stream of water is delivered to the water tank body (1), cold water is added to the water tank body (1) through the cold water supply mechanism until the volume requirement of the fourth stream of water is met.

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