JPH01158923A - Electric cleaner - Google Patents

Abstract

PURPOSE: To remarkably improve operability of a vacuum cleaner by allowing a movable element comprising a shape memory alloy to act at a time of reaching a given setting temperature on a circulating operation and work a changing valve. CONSTITUTION: On a normal operation, a changing valve 16 is in closed state of air intaking 18 side opening and in open state of air suction opening 8 of a wind circulating path 12. By changing an operation lever 27 from normal operation point to circulating operation point, the changing valve 16 is activated to be in closed state of air suction opening 8 and in open state of air intaking 18 side opening. By exotherm of electric blower 5 itself, temperature in a wind circulating path 12 increases gradually. A driving element 30 shrinks in response to temperature, to work the changing valve and make air intaking opening to an open state and air suction opening to a closed state. The changing lever 27 is integrated with the changing valve 16, which can be changed automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a vacuum cleaner capable of cyclical operation, and particularly to simplification of the operating operation when performing cyclical operation.

[Conventional technology]

The configuration of a conventional vacuum cleaner will be explained with reference to FIGS. 4, 5, and 6. In the figure, (1) is the main case, which is a part of the box, (21,<31Fi main case (movement wheels installed at the bottom of the case), (buttons are the main case (1)
The dust collection chamber (5) is located inside the front of the dust collection chamber (4).
The electric blower (6) is installed behind the electric blower (
5) is an exhaust port formed by a part of the main body case (11), (7) is a dust collection chamber (an opening/closing lid that is a part of the box provided at the front of the outside, and (8) is an opening/closing lid). (Intake port formed by a part of 71, (9I is a dust collection chamber (paper bag filter installed in 41, aυ is an intake port (a dust collection hose connected to 81), αB is for dust collection The remote control unit installed on the hose handle connects the remote circuit (1) shown in Figure 1.
1a) is provided. aZ is a circulation air passage whose one end opens to the exhaust side of the electric blower (5) and the other end opens to the intake side of the dust collection chamber (4), and αj is the remote circuit (11 &) and the manual return thermostat α9 side, which will be described later. (I4 is the operating piece of the changeover switch a3 facing the hole of the intake port (81), aS is the dustproof rubber sheet glued to the top surface of the hole of the intake port (81), is the switching valve that opens and closes the intake port (81) and the intake port (81 side opening of the circulation air path aZ), Qη is the convex part for operating the changeover switch a3 provided on the switching valve aS, and the brocade indicates "normal operation". The operating lever that operates the switching valve aG has two points for "circulation operation", α9 is a manual return thermostat that is installed in the circuit during circulation operation, and its heat-sensitive part faces into the circulation air path α2, and the handle is manual. This is a reset button that resets the return thermostat a9, and is provided with an inclined surface () and a flat surface (D). r2υ is a shaft provided integrally with the operation lever +I11, @ is fitted into the shaft QDK, and has a short protrusion (to) and a long protrusion. protrusion@
It is a rotating member that is integrally provided with a slope (A) and a flat surface (C') at the tip of the long protrusion. (C) is a first stopper that limits the movement range of the short protrusion (C), and is provided integrally with the operating lever brocade. The ridge is a short process (
2) is a second stopper that limits the movement range, and is provided integrally with the opening/closing lid +71.

(to) is a stopper that connects the main case (1) and the opening/closing lid (8).

(c) is a temperature fuse provided at the intake side opening of the circulation air path aZ. Arrows in FIGS. 4 and 5 indicate air flow.

In a vacuum cleaner configured as described above.

During normal operation, as shown in Figure 4, the switching valve ae closes the intake port (opening on the 81 side) of the circulation air path az (with the intake port (81 open)), and the electric circuit is configured as shown in Figure 1. The remote circuit (11a) is connected to the remote circuit (11a) side.Next, when the cleaning is finished, operate the switching valve α2 by setting the 11 operating lever + Ill to the "circulation operation" point to kill the inhaled mites, etc. As shown in FIG. 5, the intake port 11'll is closed, and the intake port (81 side opening of the circulation air path O2 is opened), and the convex part η for operation of the changeover switch t1j is set to the operating piece. Press I, and this causes the changeover switch 0 to switch the electric circuit from the remote circuit a11 to the manual return thermostat (19 side circuit), and the rotating member (2) attached to the operating lever brocade also moves downward, so the long protrusion The inclined surface (A) at the tip of Q6 is 1 manual return - Mosta) (the inclined surface T of the reset button (to) of 19)
h Make surface contact with (B). The rotating member (2) is provided with the first stopper (c) so that it cannot move counterclockwise, so the inclined surface (A) at the tip of the long protrusion @ is the same as the inclined surface of the reset button ■. Push in the reset button (A) while turning (B). In this way, the operation lever (
When the Ig switching valve (lS, switching switch α31 manual return thermostat (I9) reset button is operated, circulation operation is started.The exhaust of the electric blower (5) is activated by the suction force of the electric blower (5). It is sucked into the circulation air passage α2 opened on the exhaust side of (5), passes through the opening on the intake port + Circulating air flows to the blower (5), and the temperature gradually rises due to the heat generated by the electric blower (5) itself.In this way, the temperature of the circulating air path +12 reaches approximately 62°C.
When the temperature reaches ℃, the 2 manual return thermostat 0 operates to open the circuit and stop the operation of the electric blower +51. At this time, the temperature in the dust collection chamber (4) reaches about 50°C, and the HFC mites are sucked into the 91 paper bag filter (9) and killed by the heat. If you want to resume normal operation, move the control lever 0 to
``Normal operation'' point) K moves the changeover valve aυ to close the intake port (81 side opening of the circulation air path a2) and open the intake port (8), and at the same time move the changeover valve aυ to the changeover switch 3. Separate the operation protrusion a?l from the actuation piece a4.This causes the changeover switch 0 to switch the circuit from the circuit on the manual return thermostat 0 side to the remote circuit (11a)K.

At this time, the flat surface (C) of the tip of the long protrusion upwardly of the rotating member touches the flat surface CD) of the reset button handle of the manual return servostat a9. The rotating member ■ rotates clockwise] as it ascends, narrowing the contact surface between the flat surface of the tip of the long protrusion @←) and the flat surface ψ) of the reset button handle of the manual return thermostat a9.

Eventually, the contact surface comes off, and the second stopper (c) hits the short protrusion at the tip of the long protrusion (2), causing the rotary member to rotate and move it onto the slope of the reset button (2). ride on. At this time, the plane (C) of the tip of the long protrusion comes into contact with the plane (D) of the reset button @ of the manual return thermostat a3, but the long protrusion (C) rotates clockwise and escapes. Do not press the reset button (a). After operating the selector valve αe and selector switch 0 using the operating lever αS in this manner.

Normal operation is possible by turning on the remote circuit (11a) provided on the dust suction hose a. From now on, you can repeat the same operation every time you clean.

[Problem that the invention seeks to solve]

Conventional vacuum cleaners are configured as described above,
1. When returning to normal operation after completing circulation operation.

Changeover valve QG and changeover switch αj are operated by operating lever Nishiki.
The remote circuit (11a) must be turned on after the remote circuit (11a) is activated, which is a problem in that it is cumbersome to operate.

The present invention has been developed to solve the above-mentioned problems, and an object of the present invention is to provide a vacuum cleaner that is easy to operate when ending circulation operation and proceeding to normal operation.

[Failure to solve the problem]

The vacuum cleaner according to the present invention has a box body, an electric blower provided inside the box, a dust collection chamber communicating with the intake side of the electric blower, and an intake port provided on the intake side of the dust collection chamber. ,
An exhaust port provided on the exhaust side of the electric blower, a dust collection air path connected to the intake port, and one end of which is an opening on the exhaust side of the electric blower.

a circulation air passage whose other end is open to the intake side of the dust collection chamber;

A switching valve having a first state in which the circulating air passage is closed and the intake port is opened, and a second state in which the circulating air passage is opened and the intake port is closed, and the switching valve is made of a shape memory alloy provided near the switching valve. Equipped with movable parts.

The switching valve is operated from the second state to the second state by the movable member.

[Effect]

In the vacuum cleaner of this invention, the movable member made of a shape memory alloy reacts and operates when a certain set temperature is reached when the temperature inside the vacuum cleaner body rises during circulation operation, and operates the switching valve. It is something that makes you

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

Figures 1, 2, and 3 show that (1) is the main case, which is a part of the box;
), (4) is a dust collection chamber provided in the front interior of the main body case (1), (5) is an electric blower provided at the rear of the dust collection chamber (4), (6) is an exhaust port formed by a part of the main body case (1) at the rear of the electric blower (5), and C71 is an opening/closing lid that is part of the box provided in front of the dust collection chamber (41). C81 is the air intake port formed by a part of the opening/closing lid (7), (9) is the dust collection chamber (paper bag filter installed in No. 4), and a is the air intake port (dust collection air path connected to 81). The dust suction hose α9 is a remote operation part provided on the dust suction hose α0, and is equipped with a remote circuit (1ta) shown in Fig. 3.(1'3 is the exhaust side of the electric blower (51) The other end is the dust collection chamber (4
), α3 is the remote circuit (
1ta) and the circuit during circulation operation, (I4 is the operating piece of changeover switch 0 facing the hole of the intake port +81, α9 is the dust-proofing switch glued to the top surface of the hole of the intake port (81) rubber sea), (1G is a switching valve that opens and closes the intake port (8) and the opening part on the intake RO 181 side of the circulation air passage α2, αη is a changeover switch αj provided in the switching valve aS
Convex part for operation.

(5) has two points, ``normal operation'' and ``circulation operation,'' and is an operating lever integrated with the switching valve aS that operates the switching valve (I) from ``normal operation'' to ``circulation operation.'' @ is a stopper that connects the main body case (1) and the opening/closing lid (71), @ is a temperature fuse provided at the intake side opening of the circulation air path all, (to) is provided in the circulation air path aZ,
-m is fixed on its inner surface, and the other end is attached to the switching valve αυ. Figure 1,
Arrows in FIG. 2 indicate air flow. In the vacuum cleaner configured as described above, during normal operation, the switching valve assembly closes the opening on the side of the circulation air passage α2 (81) as shown in Figure 1. The electric circuit is placed on the remote circuit (11a) side as shown in Figure 3, and the electric circuit is placed on the remote circuit (11a) side as shown in Figure 3. Next, when the cleaning is finished, K is the operating lever to kill the inhaled dust mites, etc. By increasing the pressure from the "normal operation" point to the "circulation operation" point, the switching valve αe is activated and the intake port (8) is increased as shown in Figure 2.
1, and open the intake port (81 side opening) of the circulation air path a3.
In this state, the operating convex portion αη of the changeover switch α3 pushes the actuating piece I, and thereby the changeover switch α3 switches the electric circuit from the remote circuit (11a) to the circuit for circulating operation. At this time, the movable member (2) provided in the circulation air path az is also stretched. By switching to the circulation operation circuit, the electric blower (6) is activated and circulation operation is started, and the exhaust air of the electric blower (5) is transferred to the electric blower (5) by the suction force of the electric blower (5). The air is sucked into the circulation air passage opened on the exhaust side, passes through the opening on the intake port 181 side, passes through the paper bag filter (9) installed in the dust collection chamber (4), and reaches the electric blower (5) again. Circulating airflow occurs, and the electric blower (
5) The temperature inside the circulation air passage a3 gradually rises due to the heat generated by the air circulation passage a3. When the temperature inside the circulation air passage α2 reaches approximately 62°C, the drive member (to) contracts in response to the temperature, moves the switching valve a9, and opens the intake port 181 of the circulation air passage α2.
Close the opening 941I and open the intake port (81). At the same time, the changeover switch Q3 is also switched to the remote circuit (11a) side by moving the operating convex part αη, and the switch Q3 is switched to the remote circuit (11a) side, and the air blower (5) is switched to the remote circuit (11a) side. operation will be stopped. At this time, the dust collection chamber (4H
When the temperature reaches approximately 50°C, the dust mites sucked into the two paper bag filters (91) will be killed by the heat.The switching lever ■ is integrated with the switching valve ” point to the “normal operation” point. If you want to start normal operation again, you can use it by simply turning on the power to the remote circuit (11a) installed in the dust suction hose αυ. From then on. It will be even better if you repeat the same operation every time you clean.

In the above embodiment, the air passage during the circulation operation is configured so that the exhaust air from the electric blower (5) flows directly from the circulation air passage ez to the dust collection chamber (4). 12 to the dust collection chamber (4) via the dust suction hose QO.
) The FC may be configured so that the exhaust gas flows from the FC.

In addition, since the driving member is installed inside the circulation air path,
Since b cannot be moved carelessly, failures can be prevented.

〔Effect of the invention〕

As described above, according to the present invention, there is a first state in which the circulation air path is closed and the intake port is opened, and a second state in which the circulation air path is opened and the intake port is closed.
The switching valve with the state of the driving member! By automatically switching from the second state to the first state, operability is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a structural diagram showing a normal operating state of the present invention. FIG. 2 is a structural diagram showing a circulating operation state of an embodiment of this invention, and FIG. 3 is an electric circuit diagram used in an embodiment of this invention.
Fig. 4 is a structural diagram showing the normal operating state of a conventional vacuum cleaner, Fig. 5 is a structural diagram showing the cyclical operating state of a conventional vacuum cleaner, and Fig. 6 is a structural diagram of the conventional vacuum cleaner's safety device. An explanatory diagram explaining the operation. FIG. 1 is an electrical circuit diagram of a conventional vacuum cleaner. In the figure, (1) is the box, (4) is the dust collection chamber, (5) is the electric blower, (61 is the exhaust port, (71 is the intake port, a. is the dust collection air path, and Qz is the circulating air. , ae is a switching valve, @ is an operating lever. (to) is a driving member. In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (6)

[Claims] (1) A box, an electric blower installed inside the box,
A dust collection chamber communicating with the intake side of this electric blower, an intake port provided on the intake side of this dust collection chamber, an exhaust port provided on the exhaust side of the electric blower, and a dust collection air connected to the intake port. a circulation air passage whose one end opens to the exhaust side of the electric blower and the other end opens to the intake side of the dust collection chamber; a first state in which the circulation air passage is closed and the intake port is opened; a switching valve having a second state in which the air passage is opened and the intake port is closed; a driving member made of a shape memory alloy provided near the switching valve; A vacuum cleaner, characterized in that the vacuum cleaner is moved from one state to the first state. (2) When the switching valve is moved from the first state to the second state, the electric blower is turned on, and when the switching valve is moved from the second state to the first state, the electric blower is turned off. The vacuum cleaner according to claim 1, characterized in that: (3) The switching valve has an operating lever, and is manually operated when moving the switching valve from the first state to the second state. vacuum cleaner. (4) In the first state, intake air from the dust collection air path flows from the dust collection chamber and the electric blower to the exhaust port, and in the second state, the exhaust air from the electric blower flows from the circulation air path to the dust collection chamber. A vacuum cleaner according to any one of claims 1 to 3, characterized in that the vacuum cleaner is configured as follows. (5) In the first state, the intake air from the dust collection air path flows from the dust collection chamber and the electric blower to the exhaust port, and in the second state, the exhaust air from the electric blower passes through the circulation air path to the dust collection air path. The vacuum cleaner according to any one of claims 1 to 4, wherein the vacuum cleaner is configured to flow from the dust collection chamber to the dust collection chamber. (6) The vacuum cleaner according to any one of claims 1 to 5, characterized in that the driving member is provided inside the circulating air path.