JP2007117553A - Dishwasher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dishwasher for achieving highly efficient heating and considerable reduction of operation time by using a heat pump device, and to solve problems of conventional dishwashers using heaters to heat water and requiring large energy to raise water temperature. <P>SOLUTION: The dishwasher has a heating means for heating washing water. The heat pump device is provided so that refrigerant sequentially circulates through a compressor 5, a condenser 6, an expansion mechanism 7 and an evaporator 8. The condenser 6 works as the heating means so as to achieve highly efficient heating and to supply a large quantity of heat. Thereby, the operation cost and operation time can be reduced considerably. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to household and commercial dishwashers.

2. Description of the Related Art Conventionally, a dishwasher used for home use and business use has a washing tank and a dish basket for storing dishes in the washing tank, and uses a sheathed heater to heat washing water and rinse water. (For example, refer to Patent Document 1).
JP 2001-275912 A

  The dishwasher with the above conventional configuration heats water by a sheathed heater during a washing operation or a hot water rinsing operation. It was necessary to raise the temperature of the water to about 60 ° C. in the washing operation and to about 70 ° C. in the hot water rinsing operation, which required a lot of energy. For this reason, electricity costs accounted for about 70% of the operating cost of dishwashers including detergent and water bills.

  Therefore, the present invention makes it possible to perform high-efficiency heating by using a condenser of a heat pump device as a heating means, to supply a large amount of heat, to greatly reduce the operating cost, and to greatly shorten the operating time. It can be done.

  In order to solve the above-described problems, the present invention includes a main body, a washing tank, a tableware container for storing dishes in the washing tank, a water supply means for supplying washing water, and a washing pump for pumping washing water. , A washing nozzle that injects washing water pumped from the washing pump onto dishes, a heating means that heats the washing water, and a heat pump device configured to circulate refrigerant in the order of a compressor, a condenser, an expansion mechanism, and an evaporator The heating means is the condenser, so that high-efficiency heating is possible, and a large amount of heat can be supplied, so that the operating cost can be greatly reduced and the operating time can be greatly shortened. Is.

  In the dishwasher of the present invention, since the heating means is a condenser of a heat pump device, high-efficiency heating is possible, a large amount of heat can be supplied, operation cost can be greatly reduced, and operation time is also significantly shortened. Is something that can be done.

  According to a first aspect of the present invention, there is provided a main body, a washing tub, a tableware container for storing tableware in the washing tub, a water supply means for supplying washing water, a washing pump for pumping washing water, and pumping from the washing pump. A heating nozzle for injecting the washed water into the dishes, a heating means for heating the washing water, and a heat pump device configured to circulate the refrigerant in the order of the compressor, the condenser, the expansion mechanism, and the evaporator, and the heating The means is the above-described condenser, which enables high-efficiency heating, can supply a large amount of heat, can greatly reduce the operating cost, and can greatly shorten the operating time.

  In the second aspect of the invention, the condenser is provided at least on the bottom surface of the washing tank, in particular, the washing water stored in the washing tank can be directly heated, and more efficient heating can be performed. Cost can be greatly reduced. Furthermore, the space dedicated to the condenser is not required, and the dishwasher body can be made smaller.

  The third invention is provided with a washing water path for connecting a washing pump and a washing nozzle provided in the washing tank, and a condenser is provided in the washing water path, and the washing water particularly flows in the washing water path at a high speed. Therefore, the heating efficiency is good, heating with higher efficiency can be performed, and the operating cost can be greatly reduced. Furthermore, the space dedicated to the condenser is not required, and the dishwasher body can be made smaller.

  4th invention has the ventilation apparatus which ventilates in a washing tank, the inlet port provided in the washing tank, the exhaust port, and the circulation ventilation path which connects the said ventilation apparatus, A condenser is in the said circulation ventilation path. In particular, heat can be exchanged between the heated air blown and the washing water sprayed from the washing nozzle to efficiently heat the washing water, and the condenser can be installed at any position in the circulation ventilation path. The dead space in the main body can be effectively used, heating can be performed with higher efficiency, the operating cost can be greatly reduced, and the dishwasher main body can be downsized.

  According to a fifth aspect of the invention, the condenser heats the air blown into the washing tank, and in particular, the heat exchange is performed between the heated blown air and the washing water sprayed from the washing nozzle to efficiently carry out the washing water. Heating can be performed, and further highly efficient heating can be performed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
As shown in FIGS. 1 and 2, in the dishwasher according to the first embodiment of the present invention, the main body 1 is provided with a washing tub 2 opened upward so that it can be drawn forward from the main body 1. A table basket 3 for storing tableware is provided. The cleaning tank 2 can be pulled out forward by a rail 4 provided in the main body 1 and the cleaning tank 2.

  In addition, a heat pump device is provided, the heat pump device compresses the refrigerant 5, the condenser 6 condenses the refrigerant and releases heat, the expansion mechanism 7 that converts the high-pressure refrigerant into a low-temperature and low-pressure refrigerant, and heats the refrigerant by evaporating it. It consists of the structure which circulates a refrigerant | coolant in order of the evaporator 8 which absorbs. A condenser 6 is disposed on the bottom surface of the cleaning tank 2 as a heating means for heating the cleaning water in the cleaning tank 2. A cleaning pump 9 is provided in the lower rear part of the cleaning tank 2, and cleaning water is sprayed from the cleaning nozzle 10 to clean the tableware stored in the tableware basket 3. A water supply valve 11 (water supply means) supplies tap water to the washing tank 2 and is fixed to the main body 1. The drain pump 12 drains the cleaning water in the cleaning tank 2, and in this embodiment, the drain pump 12 is configured to function as a drain pump by rotating the cleaning pump 9 in the reverse direction.

  One end of the water supply hose 13 is connected to the water supply valve 11 and the other end is connected to the cleaning tank 2 to supply tap water to the cleaning tank 2. One end of the drainage hose 14 is connected to the drainage pump 12 and the other end is fixed to the main body 1 so that the cleaning water in the cleaning tank 2 is drained. The water supply hose 13 and the drainage hose 14 can be pulled out forward from the main body 1 by configuring the hose itself so that it can be expanded and contracted, or by connecting the main body 1 and the cleaning tank 2 to be elastic. It is said.

  The inner lid 15 is provided inside the main body 1 and closes the opening above the cleaning tank 2 when the cleaning tank 2 is stored in the main body 1. As a means for closing the opening above the cleaning tank 2, the main body 1 and the inner lid 16 are connected by a link (not shown), and when the cleaning tank 2 is inserted into the main body 1, the main body 1 is moved down and above the cleaning tank 2. It is configured to block. Reference numeral 16 denotes a door provided on the front surface of the cleaning tank 2, and a control device 17 for controlling loads such as the cleaning pump 9 and the heat pump device is provided in the door 16.

  Further, a heat radiating tank 18 is provided behind the cleaning tank 2, a heat exchanger 20 is provided in an installation base 19 on which the main body 1 is installed, and the heat radiating tank 18 and the heat exchanger 20 are connected by a pipe 21 and a pipe 22. A water circulation path is configured between the heat radiation tank 18 and the heat exchanger 20. The evaporator 8 is installed in the heat radiating tank 18, takes heat from the water in the heat radiating tank 18, and heats the washing water by the condenser 6. The cooled water in the heat radiating tank is sent to the heat exchanger 20 by a pump (not shown), radiated by the heat exchanger 20 and heated. The water whose temperature has been raised returns to the heat radiation tank 18 and circulates again.

  A blower 23 that blows air into the cleaning tank 2 is provided below the cleaning tank 2 in the main body 1, and the blower 23 and the cleaning tank 2 are communicated with the lower front side of the cleaning tank 2 to blow air into the cleaning tank. 2 and an exhaust port 25 are provided in front of the upper part of the cleaning tank 2.

  The operation and action of the above configuration will be described. The user pulls out the washing tank 2 forward, sets the tableware in the tableware basket 3, puts the detergent into the washing tank 2, and then pushes the washing tank 2 into the main body 1. Store in. At this time, the opening above the cleaning tank 2 is closed by the inner lid 15.

  When the operation is started, the controller 17 controls the operation of the compressor 5, the washing pump 9, the water supply valve 11, the drainage pump 12 and the like, and the dishes stored in the tableware basket 3 are washed. Since the coefficient of performance of the heat pump device is about 4 during the washing operation, when a compressor 5 with an input of 550 W is used, a heat amount of 2200 W is obtained and the washing water can be heated through the condenser 6. . Since the conventional dishwasher uses a 1100W sheathed heater, it can be heated twice with half the power compared to the conventional product, resulting in four times the thermal efficiency and greatly increasing the operating cost. It can be reduced and the heating time can be halved.

  Further, since the condenser 6 is provided on the bottom surface of the cleaning tank 2, the cleaning water stored in the cleaning tank 2 can be directly heated, and further highly efficient heating can be performed. A dedicated space is not required, and the dishwasher body can be made smaller.

  After this washing operation, the water rinsing operation is performed three times, and then the heating rinsing operation is performed. Even in the heat rinsing operation, high-efficiency heating can be performed as in the cleaning operation. Thereafter, a drying operation is performed, and the blower 23 is operated, whereby the outside air is blown into the cleaning tank 2 through the blowing path 24, and the dried air is discharged from the exhaust port 25 to the outside of the main body 1. Even during the drying operation, the heat pump device is operated to heat the wide range of the bottom surface of the washing tank 2 provided with the condenser 6 so that the drying can be efficiently performed, and the operation cost can be reduced. Thereafter, the drying operation is performed for a predetermined time and the operation is terminated.

  When the heat pump device is in operation, the condenser 6 radiates heat, while the evaporator 8 absorbs heat. At this time, the water in the heat dissipation tank 18 that houses the evaporator 8 is cooled. The cooled water is sent to the heat exchanger 20 by a water circulation pump (not shown). The low-temperature water sent to the heat exchanger 20 is deprived of heat from the surrounding air by the cooling blower 26 provided in the heat exchanger 20, is raised in temperature, and returns to the heat radiation tank 18 and circulates again. By adopting this configuration, the condenser 6, the evaporator 8, and the like can be provided in the washing tank 2 that can be pulled out from the main body 1, and the heat exchanger provided in the movable washing tank 2 and the installation table 19 outside the apparatus. As the pipes 21 and 22 connected to 20, flexible pipes such as rubber hoses can be used, and the heat pump device can be easily mounted on the dishwasher with a simple configuration.

(Embodiment 2)
As shown in FIGS. 3 and 4, the dishwasher according to the second embodiment of the present invention includes the condenser 6 in the cleaning water passage 27 that connects the cleaning pump 9 and the cleaning nozzle 10 provided in the cleaning tank 2. . By adopting this configuration, the cleaning water flows at a high speed in the cleaning water passage 27, so that the heating efficiency is good, heating with higher efficiency can be performed, and the operating cost can be greatly reduced. Furthermore, the space dedicated to the condenser 6 is not required, and the dishwasher body can be made smaller.

(Embodiment 3)
As shown in FIG. 5, the dishwasher according to the third embodiment of the present invention includes a blower 28 that blows air into the washing tub 2, an intake port 29 and an exhaust port 30 provided in the cleaning tub 2, and the intake port 29 and the exhaust port. By providing a circulation air passage 31 for connecting the port 30 and the air blower 28 and installing the condenser 6 in the circulation air passage 31, the heated air and the washing water sprayed from the washing nozzle 10 are used. Wash water can be heated efficiently by heat exchange. Moreover, since the circulation ventilation path 31 can be made into arbitrary places and shapes, the freedom degree of installation is high, and since the condenser 6 should just be provided in the arbitrary positions of the circulation ventilation path 31, it is dead in the main body 1. Effective use of space becomes possible. Therefore, further high-efficiency heating can be performed, the operating cost can be greatly reduced, and the dishwasher body can be downsized.

  Furthermore, by driving the air blower 24 and operating the heat pump device even during the drying operation, a large amount of heat can be supplied, and the drying operation time can be greatly shortened and the operation cost can be reduced.

  As described above, the dishwasher according to the present invention can perform high-efficiency heating by using the condenser of the heat pump device as a heating means for cleaning, rinsing and drying in household and commercial dishwashers. The operation cost can be greatly reduced, and the drying time can be shortened. Therefore, the present invention is useful as a dishwasher having heating means.

Side sectional view of the dishwasher according to Embodiment 1 of the present invention. Top view of the dishwasher Side sectional view of the dishwasher according to Embodiment 2 of the present invention. Top view of the dishwasher The top view of the dishwasher of Embodiment 3 of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Washing tank 3 Tableware basket 5 Compressor 6 Condenser (heating means)
7 Expansion mechanism 8 Evaporator 9 Washing pump 10 Washing nozzle 11 Water supply valve (water supply means)
16 Inner lid 15 Door 17 Control device

Claims (5)

A main body, a washing tub, a tableware for storing dishes in the washing tub, a water supply means for supplying washing water, a washing pump for pumping washing water, and washing water pumped from the washing pump. A heating nozzle that heats cleaning water, and a heat pump device configured to circulate refrigerant in the order of a compressor, a condenser, an expansion mechanism, and an evaporator, and the heating means includes the condenser, Dishwasher. The dishwasher according to claim 1, wherein the condenser is provided at least on the bottom of the washing tank. The dishwasher according to claim 1, further comprising a washing water path connecting a washing pump and a washing nozzle provided in the washing tank, wherein the condenser is provided in the washing water path. 2. A blower that blows air into the cleaning tank, an air inlet and an exhaust port provided in the cleaning tank, and a circulation air passage that connects the air blower, and a condenser is provided in the circulation air passage. Dishwasher. The dishwasher according to claim 4, wherein the condenser heats the air blown into the washing tank.