JP2014033837A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and highly reliable washing machine capable of detecting a water temperature of tap water and controlling an operation time according to the water temperature.SOLUTION: A feed water valve 28 is opened and water flows into a water injection part path 33c of a water injection device 32. The water which has flowed into the water injection part path 33c is filled so as to cover all the circumference of the outer peripheral face of a recess 33f provided at an upper water injection part 33b of the water injection device 32, a temperature detection section 42 is inserted into the recess 33f, an inner wall 33i of the recess 33f and an outer wall 42d of the temperature detection section 42 are placed so as to be in contact with each other via a plurality of thin ribs 33j formed in a recessed direction, and wall thickness of the recess 33f is as thin as approximately 1 mm, so that heat is transferred to the temperature detection section 42 quickly and thereby temperature of injected water is quickly detected.

Description

  The present invention relates to a washing machine having a water injection device mainly composed of a detergent case for supplying powder detergent into a washing tub, and a water injection case for housing the detergent case, and a temperature detection unit.

  Conventionally, in this type of washing machine, when there is no temperature detection unit in a water injection device composed of a water injection case containing a detergent case, the injected water is poured into the washing tub without detecting the water temperature (for example, patents) Reference 1).

  In FIG. 6, the water receiving tub 1 includes a washing / dehydrating tub 3 in which a pulsator 2 is rotatably disposed at the bottom, and is suspended from an outer frame 5 by a suspension bar 4. An exterior body 6 is attached to the upper part of the outer frame 5, and a cloth insertion port 7 formed at a substantially central portion of the exterior body 6 is covered with a lid 8. In addition, an electromagnetic water supply valve 9 and a water injection device 10 are attached to the rear part of the exterior body 6. The water injection device 10 includes a detergent case 11 and an exterior body 6 that are rotatably provided on the water injection device 10, and injects water into the washing and dewatering tub 3.

  In the above-described configuration, when the detergent case 11 is tilted in the washing process, the detergent is placed thereon, the washing is started, and water supply is started from the electromagnetic water supply valve 9, the water passes over the detergent case 11 of the water injection device 10. Then, it is put into the washing and dewatering tank 3. When the predetermined water level is reached, the pulsator 2 is driven to perform washing.

Japanese Patent Laid-Open No. 10-146493

  However, in the conventional configuration, when water supply is started from the electromagnetic water supply valve 9, the water passes over the detergent case 11 of the water injection device 10 and is directly injected into the washing and dewatering tub 3. Regardless of the water temperature, it was operated at the same time, and the clothes were damaged by washing too much, and on the contrary, the remaining dirt was caused by insufficient washing.

  The present invention solves the above-described conventional problems, and an object of the present invention is to provide a washing machine that can detect the water temperature of tap water and can control the operation time according to the water temperature.

  The present invention solves the above-described conventional problems, and includes a detergent case having a detergent charging part, and a water injection case having a water injection part communicating with a water supply valve for pouring water into the detergent charging part of the detergent case, The case is provided with a temperature detection unit composed of a thermistor or the like in the water injection unit.

  As a result, the temperature detection unit composed of a thermistor or the like of the water injection unit can detect the water temperature of the tap water, can control the operation time according to the water temperature, and can provide an inexpensive and highly reliable washing machine.

  The washing machine of the present invention can provide an inexpensive and highly reliable washing machine that can detect the temperature of tap water and can control the operation time according to the water temperature.

1 is a longitudinal sectional view of a washing machine according to Embodiment 1 of the present invention. Cross section of the main part of the washing machine Perspective view of essential parts of the washing machine Plan view of the main part of the washing machine Main section enlarged view of the washing machine Cross section of the main part of a conventional washing machine

  1st invention is equipped with the detergent case which has a detergent injection | throwing-in part, and the water injection | pouring case which has a water injection | pouring part connected to the water supply valve which pours water into the detergent injection | throwing-in part of the said detergent case, The said water injection case has a thermistor etc. in a water injection part By providing the temperature detection unit comprising the above, it is possible to provide an inexpensive and highly reliable washing machine that can detect the water temperature of tap water and can control the operation time according to the water temperature.

  In the second invention, the temperature detection unit is controlled by a control unit having a microcomputer or the like, and the control unit is arranged on the front surface of the upper frame body and electrically connected by Reedsen, thereby controlling the temperature detection unit. It is possible to provide a washing machine that has a simple connection with the unit, is inexpensive, and has excellent assemblability.

  According to a third aspect of the present invention, the temperature detector is inserted and fixed in a recess formed integrally with the upper water injection part forming the water injection part of the water injection case. It is possible to provide a washing machine with high reliability, low cost, and excellent assemblability.

  According to a fourth aspect of the present invention, the temperature detection unit is fixed by a claw portion of the sensor mounting it and a hole portion provided in a rib formed integrally with the upper water injection portion of the water injection case, thereby providing a simple configuration. Therefore, it is possible to provide a washing machine that is inexpensive and excellent in assemblability.

  Hereinafter, embodiments of the invention will be described with reference to the drawings. Further, the present invention is not limited by this embodiment.

(Embodiment 1)
FIGS. 1 to 3 are side sectional views of a washing machine having a water injection device including a detergent case and a water injection case that accommodates the detergent case according to Embodiment 1 of the present invention, and FIG. 2 is the detergent case and the detergent case. FIG. 3 is a perspective view of the principal part of the water injection apparatus including the detergent case and the water injection case containing the detergent case.

  In FIG. 1, a main body 11 of a washing machine supports a water tank 13 by a suspension 12 in a suspension and vibration-proof manner. The washing / dehydrating shaft 14 is hollow and has a biaxial structure. The washing and dewatering tub (washing tub) 15 has a number of dewatering holes 16 on the side wall, a fluid balancer 17 at the upper part of the inner periphery, and a pulsator 18 at the center bottom. The transmission mechanism 19 includes a reduction gear (not shown) during washing and a switching clutch (not shown) for the washing / dehydrating shaft 14 and a brake (not shown) for stopping the washing / dehydrating tub 15 during dehydration. ) Is built-in.

  The motor 20 is attached to the bottom of the water tank 13, and the motor-side pulley 21 and the mechanical-side pulley 22 transmit the power of the motor 20 to the washing / dehydrating shaft 14 via the belt 23.

An upper frame 24 is disposed on the upper portion of the main body 11, and a laundry input / exit 25 for communicating the washing and dewatering tub 15 and the outside is formed at a substantially central portion of the upper frame 24, and the laundry The inlet / outlet port 25 is covered with a lid 26 so as to be freely opened and closed. In the front side of the upper frame 24, the motor 2
A control device 27 that controls an electrical component such as 0 is arranged, and a water supply valve 28 that can be opened and closed by electromagnetic force is disposed inside the rear side. In the rear part of the laundry input / outlet 25, a detergent case 29 is housed so that it can be pulled out forward, and a water injection device 32 comprising a water injection case 31 that is kept in watertight communication with the water supply valve 28 and packing 30 is provided. Yes.

  The configuration of the water injection device 32 will be described with reference to FIGS.

  The water injection case 31 is provided with a water injection part 33 at the upper part, and this water injection part 33 is composed of a lower water injection part 33a constituting the lower part, an upper water injection part 33b covering the upper part, and a front wall 33d, and the lower water injection part 33a and the upper water injection part A water injection section path 33c communicating with the water supply valve 28 is formed by welding and fixing 33b. One or more second water injection holes 34a are provided in the bottom wall 33e of the water injection passage 33c, and one or more first water injection holes 34b are provided in the front wall 33d. In the state where the detergent case 29 is accommodated in the water injection case 31, a flowing water surface 35 inclined downward from the rear to the front is provided below the detergent case 29, and a water inlet 36 is provided in the front.

  The detergent case 29 is composed of a powder detergent charging part (detergent charging part) 37 for charging powder detergent and a handle 41 for operating the detergent case.

  The powder detergent charging part 37 is formed in a box shape, and an opening 37b is formed in the lower part of the rear wall 37a. Thereby, the water poured into the powder detergent introduction part 37 flows down on the water flow surface 35 of the water injection case 31 from the opening 37b. Further, the bottom surface 37d of the powder detergent charging portion 37 is inclined rearward and downward with a substantially constant inclination.

  The handle part 41 is formed with a hand insertion part 41a and a water pouring wall surface 41b curved downward at the lower part, and the water flowing from the water flow surface 35 of the water pouring case 31 hits the water pouring wall surface 41b. The water injection port 36 is formed.

  Further, the first water injection hole 34b of the front wall 33d of the water injection section path 33c inclines the lower side wall surface 34c in the front lower direction.

  The upper water injection portion 33b is provided with a concave portion 33f into which the temperature detecting portion 42 made of a thermistor or the like is inserted, and the thickness of the concave portion 33f is about 1 mm. The inner wall 33i of the recess 33f and the outer wall 42d of the temperature detection unit 42 are in contact with each other through a plurality of thin ribs 33j formed in the direction of the recess.

  The temperature detection unit 42 is electrically connected to the control device 27 by a lead sensor 43, and a signal of the temperature detection unit 42 is processed by a microcomputer or the like built in the control device 27. The lead sen 43 is fixed to the rear attachment frame 44 by a hook portion 44b provided on the upper surface 44a of the rear attachment frame 44 incorporated in the rear portion of the upper frame 24 and a snap pin 43a provided on the lead sen 43. It passes through the side surface of the frame body 24 and is disposed up to the control device 27 accommodated in the front surface of the upper frame body 24.

  The temperature detection part 42 covers the vicinity of the root part of the lead wire 42a with a protection tube 45, and makes contact with the flange part 42c of the outer peripheral cylindrical body 42b and the lower surface of the end face flange part 45a of the protection tube 45, and this end face flange part The upper surface of 45 a is brought into contact with the central rib 46 a of the sensor mounting iter 46. The sensor mounting italy 46 has a claw portion 46b on the outer periphery, and is engaged with a hole 33h of a rib 33g formed integrally with the upper water injection portion 33b to fix the temperature detecting portion 42.

In addition, even if the temperature detection part 42 and the outer periphery cylindrical body 42b are formed integrally, it is the same structure,
Even if the claw portion 46b of the sensor mounting iter 46 and the hole portion 33h of the upper water injection portion 33b are reversed, they have the same configuration.

  About the washing machine comprised as mentioned above, the operation | movement and an effect | action are demonstrated.

  The user pulls out the detergent case 29 from the water pouring case 31, puts a predetermined amount of powder detergent into the powder detergent pouring portion 37 of the water pouring case 31, stores the detergent case 29 in the water pouring case 31, and is provided in the control device 27. Turn on the start switch. Thereby, the water supply valve 28 is opened, and water flows into the water injection section path 33 c of the water injection apparatus 32. The water that has flowed into the water injection section path 33c is filled so as to cover the entire outer peripheral surface of the recess 33f provided in the upper water injection section 33b of the water injection device 32, and is inserted into the recess 33f and the inner wall 33i of the recess 33f and the temperature detection. The outer wall 42d of the portion 42 is disposed in contact with a plurality of thin ribs 33j formed in the recess direction, and the thickness of the recess 33f is as thin as about 1 mm. The temperature of the water injection is quickly detected by the rapid heat transfer. The detected water temperature signal is transmitted to the control device 27 by the lead sensor 43, and water is poured by the microcomputer or the like built in the control device 27 so that the washing time is shortened when the temperature is high and the washing time is lengthened when the temperature is low. Is completed to a predetermined water level, the operation time of the motor 20 is controlled.

  Thus, since the temperature of the injected water is quickly detected by the temperature detection unit 42 provided in the upper water injection part 33b of the water injection case 31 connected directly below the water supply valve 28, the temperature is high. The cleaning performance is improved, but the tendency to damage clothes is likely to occur.By shortening the operation time, the clothes can be prevented from being damaged while maintaining the cleaning performance, and the power consumption can be reduced. When the temperature is low, the washing performance is deteriorated, but the tendency for the clothes to be hard to be damaged tends to be less likely to occur. By extending the operation time, the washing performance can be prevented from being deteriorated while the clothes are prevented from being damaged. Since the tap water from the adhering to the outer peripheral surface of the concave portion 33f is less dissolved, the deposits are prevented from depositing on the outer peripheral surface of the concave portion 33f into which the temperature detecting portion 42 is inserted, and the detection performance over time is reduced. Change As can be reduced, thereby improving the reliability of the detection performance.

  The temperature detection unit 42 is provided in the upper water injection part 33 b of the water injection case 31 and is electrically connected to the control device 27 by a reed sensor 43. The reed sensor 43 is attached to the rear part of the rear part of the upper frame 24. The hook 44 b provided on the upper surface 44 a of the frame 44 and the snap pin 43 a provided on the lead sensor 43 are fixed to the rear mounting frame 44, pass through the side of the upper frame 24, and enter the front of the upper frame 24. By arranging up to the accommodated control device 27, the length of the reed sensor 43 can be shortened, and it can be assembled by simple work such as wiring processing at the fixed portion and hooking work on the hook, and it is inexpensive and can be assembled. It can be made excellent.

  Further, by inserting the temperature detection unit 42 into the concave portion 33f provided integrally with the upper water injection portion 33b of the water injection case 31, a complicated and reliable watertight configuration can be deleted, and the occurrence of water leakage is prevented. It can be prevented, inexpensive and excellent in assemblability.

  Further, the temperature detection unit 42 covers the vicinity of the base portion of the lead wire 42a with the protective tube 45, and makes contact with the flange portion 42c of the outer peripheral cylindrical body 42b and the lower surface of the end surface flange portion 45a of the protective tube 45, and this end surface flange portion The upper surface of 45a is brought into contact with the central rib 46a of the sensor mounting iter 46, and the sensor mounting iter 46 has a claw portion 46b on the outer periphery, and a hole 33h of a rib 33g formed integrally with the upper water injection portion 33b. And the temperature detection unit 42 is fixed, so that it is possible to prevent disconnection due to vibration or the like over time during assembly work of the lead wire 42a of the temperature detection unit 42. An extremely simple configuration can be achieved, and it can be inexpensive and excellent in assemblability.

As apparent from the above description, in this embodiment, the detergent case 29 having the detergent charging part 37 and the water injection case 31 having the water injection part 33 communicating with the water supply valve 28 for pouring water into the detergent charging part 37 of the detergent case 29, The water injection case 31 is provided with a temperature detection unit 42 made of a thermistor or the like in the water injection unit 33, so that the temperature of the injected water can be detected quickly, so that the operation time suitable for the water temperature can be controlled. While maintaining the cleaning performance and the garment damage, the deterioration of the cleaning performance and the garment damage can be prevented, and the energy saving performance can be improved.

  As described above, the washing machine having the temperature detection unit in the water injection device according to the present invention can prevent the deterioration of the cleaning performance and the damage of the clothing while maintaining the cleaning performance and the damage of the clothing with a simple configuration, and It is useful as a washing machine with a configuration that can improve energy saving.

27 Control part 28 Water supply valve 29 Detergent case 31 Water injection case 33 Water injection part 33b Upper water injection part 33h Hole part 42 Temperature detection part 43 Reed sensor 46 Sensor mounting iter 46b Claw part

Claims (4)

A detergent case having a detergent inlet, and a water injection case having a water injection part communicating with a water supply valve for injecting water into the detergent inlet of the detergent case, and the water injection case has a temperature detection unit comprising a thermistor or the like in the water injection part. A washing machine equipped. The washing machine according to claim 1, wherein the temperature detection unit is controlled by a control unit having a microcomputer or the like, and the control unit is disposed on the front surface of the upper frame and is electrically connected by Reedsen. The washing machine according to claim 1 or 2, wherein the temperature detection unit is inserted and fixed in a recess formed integrally with an upper water injection unit forming the water injection unit of the water injection case. The washing machine according to claim 1, 2, and 3, wherein the temperature detection unit is fixed by a claw portion of the sensor mounting iter and a hole portion provided in a rib formed integrally with an upper water injection portion of the water injection case.

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