JPH0664440A - Accessories for vehicle - Google Patents

Abstract

PURPOSE:To enable the inside of a cabin to be warmed up at comparatively high speed with an engine started by connecting a water jacket to an engine cooling circuit including a radiator and a heater in the outside area enclosing a main component mechanism wherein heat generated by the operations of the main component mechanism is converted into rise in temperature in circulating water. CONSTITUTION:When a main component mechanism is operated by an engine 33, the main component mechanism is heated up more quickly than the engine is. Heat generated is converted into rise in temperature in cooling water by means of a water jacket W formed at an outside area enclosing the main component mechanism, so that heated circulating water is then forwarded to a heater 32. Heat is exchanged from circulating water high in temperature to air by the heater 32, so that warm wind is supplied to the inside of a cabin. Circulating water having passed through the heater 32 is returned to cool the engine 33 again. Therefore there is no deed to sacrifice its other functions in order to quickly warm up the cabin.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary machine used as a vehicle heating system.

[0002]

2. Description of the Related Art A conventional general vehicle heating system supplies high-temperature circulating water used for cooling an engine to a radiator to cool it, and also supplies a part of it to a heater.
In the heater, heat is exchanged from high-temperature circulating water to air, and hot air is supplied into the passenger compartment. The circulating water that has passed through the heater is used again for cooling the engine together with the returning circulating water from the radiator.

However, in this general vehicle heating system, hot air cannot be supplied into the passenger compartment unless the circulating water for cooling the engine reaches a high temperature, especially in a relatively low temperature environment such as a cold region. Then, it takes a long time from the start of the engine to the heating of the passenger compartment. Therefore, in order to realize heating of the vehicle compartment relatively quickly by starting the engine, a vehicle heating device in which a viscous fluid coupling is connected to an engine cooling circuit has also been developed (Japanese Patent Laid-Open No. 2-24682).
No. 3, JP-A-2-254010, JP-A-3-
57877). The viscous fluid coupling in the vehicle heating system includes a housing, an input shaft supported in the housing and transmitting the driving force of the engine via an electromagnetic clutch, and a large number of large areas fixed to the input shaft in the housing. A rotor having a labyrinth groove formed of a wall,
The rotor has a labyrinth groove fixed to the housing and a cover formed with a labyrinth groove that fits with a predetermined gap, and a viscous fluid such as silicone oil is sealed between the rotor and the cover. is there. Engine cooling water is circulated between the cover and the housing. In this viscous fluid coupling, when the rotor is rotated by the rotation of the input shaft, the viscous fluid enclosed between the cover fixed to the housing generates heat due to stirring and shearing of the relative rotation between the rotor and the cover. The heat is transferred to the circulating water between the cover and the housing, and the heated circulating water is used for heating the vehicle interior by the heater.

[0004]

However, in the engine room of the vehicle, as shown in FIG. 7, a crankshaft pulley 91 is provided around the engine 90 in order to improve the performance of the vehicle.
A large number of auxiliary devices such as an air conditioner refrigerant compressor 93, a power steering pump 94, an alternator 95, etc., which are connected to each other via a belt 92. For this reason, it is difficult to secure an independent space in the engine room for this purpose, even if the other independent heating device as described above is not installed in order to realize quick heating after starting in cold regions. Yes, there is a problem in mountability. If the above-mentioned heating device were installed under replacement with the air conditioner refrigerant compressor 91 or the like, the vehicle would sacrifice other functions in order to realize quick heating. I will end up.

An object of the present invention is to realize a relatively quick heating of a vehicle compartment by starting an engine while ensuring excellent mountability.

[0006]

A vehicle accessory according to the present invention comprises:
In order to solve the above problems, the main constituent mechanism is operated by the vehicle engine, and a water jacket that converts the heat generated by the operation of the main constituent mechanism into the temperature rise of the circulating water is provided in the outer region surrounding the main constituent mechanism, A new configuration is adopted in which the water jacket is connected to an engine cooling circuit including a radiator and a heater. .

The main component mechanism is a refrigerant compression mechanism, and the engine cooling circuit can be provided with a switching valve for connecting and disconnecting the connection with the water jacket at a preset temperature.

[0008]

The vehicle accessory according to the present invention has main constituent mechanisms such as a refrigerant compression mechanism and a power steering pump mechanism provided around the engine in the engine room of the vehicle, and the water is provided in the outer area surrounding the main constituent mechanism. It has a jacket. Therefore, it is not necessary to allocate a separate space in the engine room for the equipment.

In this vehicle accessory, if the main constituent mechanism is operated by the engine, the main constituent mechanism heats up more quickly than the engine. This generated heat is converted into an increase in the temperature of the circulating water by the water jacket formed in the outer region surrounding the main constituent mechanism, and the heated circulating water is sent to the heater. In the heater, heat is exchanged from high-temperature circulating water to air, and hot air is supplied into the passenger compartment.
Then, the circulating water that has passed through the heater is used again for cooling the engine. Therefore, other functions are not sacrificed to achieve quick heating.

In the vehicle accessory of the present invention, if the main constituent mechanism is the refrigerant compression mechanism and the engine cooling circuit is provided with the switching valve for connecting and disconnecting the connection with the water jacket at the set temperature, the temperature is less than the set temperature. The circulating water in the engine cooling circuit is circulated in the water jacket, and the circulating water in the engine cooling circuit is not circulated in the water jacket at the set temperature or higher. In other words, if the circulating water in the engine cooling circuit is still cold, the open state of the switching valve
The circulated water is circulated in the water jacket, and the circulated water is heated by the heat generated by the refrigerant compression mechanism to be used for quick heating by the heater. On the other hand, when the circulating water in the engine cooling circuit becomes sufficiently high in temperature due to the heat generation of the engine, the circulating water at a high temperature is not circulated in the water jacket because the switching valve is closed. Therefore, it is possible to prevent a decrease in the refrigerant compression capacity due to the main constituent mechanism being heated in reverse,
Early deterioration of the sealing material such as the O-ring is prevented.

[0011]

【Example】

(Embodiment 1) In the following, with reference to the drawings, an embodiment 1 in which the main constituent mechanism of the vehicle accessory of the present invention is a swash plate type refrigerant compression mechanism for an air conditioner with five cylinders per side will be described. Figure 1
2, the both ends of the cylinder blocks 1 and 2 arranged opposite to each other are closed by front and rear housings 5 and 6 via front and rear valve plates 3 and 4, respectively, and these are inserted into the bolt insertion holes 1a and 2a. Multiple bolts 7
Are joined by. A swash plate chamber 8 is formed in the connecting portion of the cylinder blocks 1 and 2, and a drive shaft 9 penetrating through the central shaft holes 1b and 2b of the cylinder blocks 1 and 2 is formed therein.
The swash plate 10 fixed to the housing is accommodated. Five pairs of cylinder bores 11 are formed in the cylinder blocks 1 and 2 in parallel to the drive shaft 9 and in a radial position about the drive shaft 9, and each cylinder bore 11 has a double-headed piston 12.
Is inserted and each piston 12 is anchored to the swash plate 10 via a hemispherical shoe 13.

The front and rear housings 5 and 6
The suction chambers 14 and 15 are formed on the center side of each of them, and the discharge chambers 16 and 17 are formed on the outer peripheral side thereof. The front and rear valve plates 3 and 4 have suction chambers 14 and 15 respectively.
From each of the cylinder bores 11 into the low pressure refrigerant gas, and the discharge ports 20 and 21 from each of the cylinder bores 11 into the discharge chambers 16 and 17 to discharge the high pressure refrigerant gas. And are formed. Further, intake valve mechanisms 22 and 23 are provided on the cylinder blocks 1 and 2 sides of the valve plates 3 and 4, and discharge valve mechanisms 24 and 25 are provided on the housing 5 and 6 sides of the valve plates 3 and 4.
Is provided.

A projecting portion 26 is provided on the upper portion of the rear cylinder block 2, and a suction passage (not shown) that opens to the swash plate chamber 8 is bored in the projecting portion 26. A plurality of suction passages 28 and 29 that communicate the swash plate chamber 8 with the suction chambers 14 and 15 are formed between the cylinder bores 11 in both cylinder blocks 1 and 2, and are sucked into the swash plate chamber 8 from the suction passages. Refrigerant gas is introduced into the suction chambers 14, 15 through the suction passages 28, 29.

In the cylinder blocks 1 and 2 and the front and rear housings 5 and 6, a water jacket W is formed which communicates with each other in the circumferential direction. The water inlet port 39 and the water outlet port 31 shown in FIGS. 2 and 3 of the water jacket W are connected to the engine cooling circuit by hoses. That is, the water outlet port 31 of the vehicle auxiliary device 30 is connected to the heater 32, and the heater 32 is connected to the water jacket of the vehicle engine 33. The water jacket of the engine 33 has a circulating water temperature of 82.
If the temperature is about C or higher, it is connected to a radiator 36 opposite to the condenser 35 via a thermostat 34 to be connected, and is recirculated from the water pump 37 to the water jacket of the engine 33. Also,
The thermostat 34 is directly connected to the water pump 37 if the water temperature of the circulating water is less than about 82 ° C. A thermostat 38 is also provided in the middle of the thermostat 34 and the heater 32. If the water temperature of the circulating water is slightly lower than 82 ° C., the circulating water will pass through the connecting thermostat 38 and the water inlet port 39 of the vehicle auxiliary device 30. Connected to.
Furthermore, the thermostat 38 has a circulating water temperature of 82 ° C.
If the temperature is slightly lower than the temperature, the connection with the water inlet port 39 is cut off and the heater 32 is directly connected.

In the vehicle accessory constructed as described above, when the drive shaft 9 of the refrigerant compression mechanism shown in FIG. 1 is rotated by the engine 33, the swash plate 10 is rotated and each piston 12 is set in the cylinder bore 11. It is reciprocated. As a result, the refrigerant gas is sucked, compressed, and discharged. The compressed high-pressure refrigerant gas is led to the external refrigeration circuit from the discharge chambers 16 and 17 through a discharge passage (not shown).

Shortly after starting, as shown in FIG.
Circulating water at a low temperature (usually less than 82 ° C.) still flows in the water jacket of the engine 33, and the circulating water is not sent to the radiator 36 until the temperature of the circulating water rises due to heat generation of the engine 33 and the thermostat 34 is switched. Then, the water is returned to the water jacket of the engine 33 through the water pump 37. The low-temperature circulating water led from the middle of the thermostat 34 and the water pump 37 is circulated from the water inlet port 39 to the water jacket W of the vehicle accessory via the thermostat 38.

Here, the refrigerant compression mechanism generates heat more quickly than the engine 33 due to the compression work of the refrigerant gas. The generated heat is converted into a rise in the temperature of the low temperature circulating water by the water jacket W, and the heated high temperature circulating water is sent from the water outlet port 31 to the heater 32. Heater 3
In 2, heat exchange from high-temperature circulating water to air is achieved, and hot air is supplied to the passenger compartment. Then, the circulating water that has passed through the heater 32 is introduced again into the water jacket of the engine 33 and is used for cooling the engine 33.

Therefore, the heating of the vehicle compartment can be realized relatively quickly by starting the engine 33. At this time, since the passenger wants to heat the passenger compartment,
By turning on the heating switch, cooling by the refrigerant gas is disabled. When the circulating water becomes hot due to the heat generation of the engine 33, the thermostat 38 is switched. As a result, the high-temperature circulating water from the water jacket of the engine 33 is not circulated in the water jacket W of the vehicle accessory, as shown in FIG. 3, but is directly sent to the heater 32. Further, if the circulating water reaches a high temperature (usually 82 ° C or higher), the thermostat 34 is also switched and the engine 33
The hot circulating water from the water jacket is sent to a radiator 36 opposite the condenser 35. In this way, the refrigerant compression mechanism is prevented from being adversely heated by the high-temperature circulating water, so that the refrigerant compression capacity is not deteriorated and the sealing material such as the O-ring is prevented from being deteriorated early. If the occupant desires to cool the passenger compartment, the cooling switch is turned on to disable the heating by the circulating water and the refrigerant gas can be used for cooling.

Further, this vehicle auxiliary machine has a refrigerant compression mechanism provided around the engine 33 in the engine room of the vehicle, and has a water jacket W in an outer region surrounding the refrigerant compression mechanism. Therefore, it is not necessary to devote a separate space in the engine room for equipment, and other functions are not sacrificed for quick heating.

Since this vehicle accessory can be obtained by providing the water jacket W in the outer region of the refrigerant compression mechanism,
Compared with the labyrinth groove in the vehicle heating device described in the above publication, the manufacturing is easier and the manufacturing cost can be reduced. (Embodiment 2) Hereinafter, Embodiment 2 in which the main constituent mechanism of the vehicle accessory of the present invention is a vane type power steering pump mechanism will be described with reference to the drawings.

In FIG. 4, a cylinder block 42 having an elliptical through hole is housed in a center housing 41, and both ends of the cylinder block 42 are closed by a pair of side plates (not shown). It is held by a front and rear housing (not shown) by bolts 40. As a result, the through hole of the cylinder block 42 has a rotor chamber 42 having an elliptical longitudinal section.
It is a. A drive shaft 43 is rotatably held in the shaft holes of both side plates via bearings, and a rotor 44 having a circular cross section is spline-fitted to the drive shaft 43 so as to be disposed in the rotor chamber 42a. ing. Ten vane grooves 44a are engraved on the outer peripheral portion of the rotor 44 in a rotationally symmetrical manner, and the vanes 45 are held in the respective vane grooves 44a so as to be capable of projecting and retracting in the radial direction. Two suction ports 46 and two discharge ports 47, which are opened at predetermined positions in the rotor chamber 42a, are formed on one side plate.
These suction and discharge ports 46 and 47 are connected to a power steering circuit by an oil pipe (not shown).

Inside the center housing 41, water jackets W are formed which communicate with each other in the circumferential direction. The water jacket W is provided with a water inlet port 48 and a water outlet port 49, and these water inlet port 48 and water outlet port 49 are connected to the engine cooling circuit shown in FIGS. 5 and 6 by hoses. This engine cooling circuit is different from the engine cooling circuit of the first embodiment in that the vehicle auxiliary device 50 is different, that the thermostat 38 is not provided, and the water inlet port 48 and the water outlet port 49 are short-circuited by the thermostat 38. The only difference is that it is not provided, and the other configuration is the same as that of the first embodiment. Therefore, the same components are designated by the same reference numerals and the description thereof is omitted.

In the vehicle accessory constructed as described above, when the drive shaft 43 of the pump mechanism shown in FIG. 4 is rotated by the engine 33, the rotor 44 is rotated and each vane 45 is moved along the inner wall of the rotor chamber 42a. And goes into and out of each vane groove 44a. As a result, suction, compression and discharge of hydraulic oil are performed. The high-pressure hydraulic oil is led to the power steering circuit from the discharge port 47.

Shortly after starting, as shown in FIG.
Although low-temperature circulating water still flows through the water jacket of the engine 33, the thermostat 34 and the water pump 3
Low temperature circulating water led from the middle of 7
Is circulated to the water jacket W of the vehicle accessory.
Here, the refrigerant compression mechanism generates heat faster than the engine 33 due to the work of increasing the pressure of the hydraulic oil. This generated heat is converted by the water jacket W into an increase in the temperature of the low-temperature circulating water, and the heated high-temperature circulating water is discharged into the water outlet port 4.
It is sent to the heater 32 from 9 and is used for heating by the heater 32. Therefore, the heating of the vehicle compartment can be realized relatively quickly by starting the engine 33.

When the circulating water becomes high temperature due to the heat generation of the engine 33, the thermostat 34 is switched as shown in FIG. 6, and the high temperature circulating water from the water jacket of the engine 33 is placed in the radiator 36 opposite to the condenser 35.
Sent to. The high-temperature circulating water from the water jacket of the engine 33 is also circulated in the water jacket W of the vehicle accessory. In this way, the circulating water cools the pump mechanism by the water jacket W of the vehicle accessory, the temperature of the circulating water is further increased, and the circulating water is sent to the heater 32 and is heated by the heater 32.

Therefore, this vehicle accessory differs from the first embodiment in that the circulating water is circulated in the water jacket W of the vehicle accessory even when the circulating water becomes hot.
Other actions and effects can be similarly achieved. In addition,
Although the refrigerant compression mechanism for the air conditioner and the pump mechanism for the power steering are adopted as the main constituent elements of the vehicle accessory in the first and second embodiments, the invention can be applied to other main constituent elements.
Further, the refrigerant compression mechanism and the pump mechanism are not limited to the swash plate type and the vane type, and other mechanisms such as a wobble type and a crank type can be adopted.

[0027]

As described in detail above, the vehicle accessory of the present invention employs the structure described in the claims, so that it can be compared by starting the engine while ensuring excellent mountability. The heating of the vehicle interior can be achieved quickly.
Further, since this vehicle accessory can be obtained by providing a water jacket in the outer region of the main constituent mechanism, it is easier to manufacture as compared with the labyrinth groove in the vehicle heating device described in the above publication, and the manufacturing cost is low. Can be realized.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a vehicle accessory according to a first embodiment.

FIG. 2 is a schematic diagram of an engine cooling circuit including the vehicle auxiliary machine of the first embodiment and when circulating water is at a low temperature.

FIG. 3 is a schematic diagram of an engine cooling circuit including the vehicle auxiliary machine of the first embodiment and when circulating water is at a high temperature.

FIG. 4 is a transverse sectional view of a vehicle accessory according to a second embodiment.

FIG. 5 is a schematic diagram of an engine cooling circuit including a vehicle auxiliary machine according to a second embodiment and when circulating water is at a low temperature.

FIG. 6 is a schematic diagram of an engine cooling circuit including a vehicle accessory of Example 2 and when circulating water is at a high temperature.

FIG. 7 is a front view showing the vicinity of the engine in the engine room.

[Explanation of symbols]

33 ... Engine 9, 43 ... Drive shaft 1
0 ... Swash plate 11 ... Compression chamber 12 ... Piston 44 ... Rotor 45 ... Vane 4
2a ... Rotor chamber W ... Water jacket 36 ... Radiator 3
2 ... Heater 38 ... Thermostat (switching valve)

Claims (2)

[Claims] 1. A main constituent mechanism is operated by a vehicle engine, and a water jacket is provided in an outer region surrounding the main constituent mechanism for converting heat generated by the operation of the main constituent mechanism into a rise in temperature of circulating water. A vehicle accessory, wherein the jacket is connected to an engine cooling circuit including a radiator and a heater. 2. The vehicle according to claim 1, wherein the main constituent mechanism is a refrigerant compression mechanism, and the engine cooling circuit is provided with a switching valve for connecting and disconnecting the connection with the water jacket at a preset temperature. Auxiliary equipment.