JP2008157605A - Heater for compressor and compressor having same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heater for a compressor enabling the easy installation of a sensor part measuring a refrigerant temperature in a heater for evaporating a liquid refrigerant flowing into a compressor and the compressor. <P>SOLUTION: This compressor comprises a compressor casing, the sensor part in contact with the outer peripheral surface of the compressor casing, the heater surrounding the outer peripheral surface of the compressor casing and evaporating the liquid refrigerant flowing into the compressor, and a sensor installation part which is formed on the heater and on which the sensor part is mounted. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a compressor heater, and provides an invention that facilitates the installation of a heater that vaporizes liquid refrigerant flowing into the compressor and a sensor unit that measures the refrigerant temperature inside the compressor. is doing.

  In view of the conventional invention, a belt-shaped heater 3 surrounding the lower portion of the casing 2 of the compressor 1, the heater 3 spaced apart from the heater 3, and provided at the upper portion of the heater 3, the refrigerant temperature inside the compressor 1. The sensor unit 10 is provided in a cylindrical shape and is supported by a metal bracket 12, and both end portions of the bracket 12 are compressed by a first coil spring 15. It is fixed to the outer peripheral surface of the casing 2 of the machine 1.

  On the other hand, the heater 3 includes a silicon belt portion 5 that surrounds the outer peripheral surface of the casing 2 of the compressor 1, a heating wire 6 that is provided inside the belt portion 5 and generates heat, and the heating wire. 6 and a wire portion 7 that is connected to the heating wire 6 and supplies power to the heating wire 6.

  On the other hand, since the length of the belt portion 5 is shorter than the circumference of the casing 2 of the compressor 1, both ends of the belt portion 5 are connected and fixed so that the belt portion 5 is not lowered. However, such a connecting member is composed of the second coil spring 20, and the both ends of the belt portion 5 can be engaged with both ends of the second coil spring 20. Both of these locking members 8 are provided outside the belt portion 5.

  In such a configuration, since the heater 3 and the sensor unit 10 must be installed separately, there is a problem that installation time is delayed, and two coil springs are required, and the sensor The bracket 12 only for installation of the part 10 must be provided, and there was a limit to reducing the manufacturing cost.

  In addition, there is a risk that the electric wire that supplies power to the heating wire 6 may be caught by the first coil spring 15 or the second coil spring 20 or may be cut in contact with the edge portion of the bracket 12 that fixes the sensor unit 10. There was also.

  The present invention is for solving such a problem, and an object thereof is to reduce the installation time of the heater and the sensor unit and the cost of components necessary for the installation.

  It is still another object of the present invention to obviate the danger that the wire portion connected to the heating wire may come into contact with other components and bend or cut.

  In order to achieve such an object, the present invention provides a compressor casing, a sensor portion that contacts the outer peripheral surface of the compressor casing, and a liquid that surrounds the outer peripheral surface of the compressor casing and flows into the compressor. There is provided a compressor comprising: a heater for vaporizing a refrigerant; and a sensor installation section provided in the heater and provided with the sensor section.

  The heater includes a belt portion that wraps around the outer peripheral surface of the compressor casing, and a heating wire that is received inside the belt portion, and the sensor portion installation portion is provided at one end of the belt portion, And it is comprised from the insertion hole in which the said sensor part is inserted and fixed apart from the said heating wire.

  The length of the belt portion is smaller than the outer periphery of the compressor casing, and both ends of the belt portion are connected to both ends of the belt portion so that the belt is fixed to the outer periphery of the casing. Such a locking member is provided with a connecting member to be made.

  A first locking member is provided at one end of the belt portion, a second locking member is provided at the other end of the belt portion, and the first locking member is an inner surface of the belt portion. The second locking member is provided on an outer surface of the belt portion so as to cross each other.

  The electric wire further includes an electric wire portion that is connected to the heating wire and extends to the outside of the belt portion, and the electric wire portion is fixed to the connecting member so as to prevent interference with the connecting member. The first locking member is provided separately from the first locking member and is connected thereto.

  The insertion hole is provided between the heating wire and the second locking member.

  Further, the connecting member is constituted by a coil spring provided with locking hooks at both ends.

  The present invention provides a sensor unit that contacts an outer peripheral surface of a compressor casing, a belt unit that includes the sensor unit and surrounds the outer peripheral surface of the compressor casing, and an inner surface of the belt unit that is received by the compression unit. There is provided a heater for a compressor including a heating wire for heating a machine casing to vaporize a refrigerant.

  Further, the belt portion is provided with an insertion hole into which the sensor portion is inserted and fixed.

  The length of the belt portion is shorter than the circumference of the compressor casing, and the belt portion is connected to both ends of the belt portion so that the belt portion is connected to the compressor casing outer periphery. The connecting member to be fixed is connected.

  In addition, the locking member is provided at one end of the belt portion, and the first locking member on which the one end portion of the connecting member is applied, and the other end of the connecting member provided at the other end portion of the belt portion. And the second locking member is provided on the inner surface of the belt portion, and the second locking member is provided on the outer surface of the belt portion.

  The belt portion may include an electric wire portion that supplies electricity to the heating wire, and the electric wire portion may be provided apart from the first locking member so as not to interfere with the connecting member. To do.

  The insertion hole is provided between the heating wire and the second locking member.

  Further, the connecting member is constituted by a coil spring provided with locking hooks at both ends.

  According to the present invention, since the sensor section is inserted and fixed to the belt-shaped heater, the number of necessary parts can be reduced as compared with the conventional technique, so that the manufacturing cost can be reduced. Since part of the mounting process can also be omitted, the time required for mounting can be reduced.

  In addition, since the contact or interference between the coil spring that fixes the heater and the electric wire portion that supplies power to the heater can be prevented, the electric wire portion can be prevented from being twisted with the coil spring, so that the electric wire portion can be prevented from being damaged. An effect is also obtained.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 2, a heater 33 is provided on the lower outer peripheral surface of the casing 32 of the compressor 30, and a sensor unit 45 is inserted and fixed to the heater 33.

  If a specific configuration of the heater 33 is seen, an appearance of the heater 33 is formed, and a belt portion 34 surrounding the outer peripheral surface of the casing 32 of the compressor 30 and a heat generating action provided inside the belt portion 34. The heating wire 35 for vaporizing the liquid refrigerant flowing into the compressor casing and the electric wire portion 36 connected to the heating wire 35 and supplying an external power source to the heating wire 35 are included. .

  Since the length of the belt portion 34 is shorter than the length around the casing 32, connecting members are connected to both ends of the belt portion 34 so that the belt portion 34 surrounds the outer peripheral surface of the casing 32. However, it is preferable that the connecting member is composed of a coil spring 40 having elasticity.

  Therefore, the both ends of the belt portion 34 are attached with a locking member 41 that can be fixed with both ends of the coil spring 40 being engaged. As will be described later, the locking member 41 includes the coil spring 40 and the electric wire portion. The belt portion 34 is provided on the inner surface and the outer surface so that no interference occurs between the belt portion 34 and the belt 36.

  A sensor installation portion is provided at one end of the belt portion 34. Preferably, the sensor installation portion is provided with an insertion hole 48 into which the sensor portion 45 can be inserted and fixed. 48 must be separated from the heating wire 35 by a certain distance.

  As shown in FIG. 3, the locking members 41 provided at both ends of the belt portion 34 include a first locking member 41 a provided on the inner surface of the belt portion 34 and a second locking member 41 provided on the outer surface of the belt portion 34. The first and second locking members 41a and 41b include fixing holes 42 (42a) into which locking hooks 40a and 40b formed at both ends of the coil spring 40 can be inserted and fixed. 42b).

  On the other hand, the sensor part 45 is formed in a cylindrical shape, and the insertion hole 48 is circular so as to correspond to the size and shape of the sensor part 45. The position of the insertion hole 48 is the heating wire. 35 and the second locking member 41b are preferably formed.

  The electric wire portion 36 connected to the heating wire 35 is connected to the side surface of the end portion of the belt portion 34 where the first locking member 41a is provided. And a portion provided with the first locking member 41a are spaced apart from each other by a certain distance.

  Accordingly, since the first locking member 41a is provided on the inner surface of the belt portion 34 and is separated from the electric wire portion 36, the coil spring 40 applied to the fixing hole 42a of the first locking member 41a and the It is possible to prevent a phenomenon in which the electric wire portion 36 interferes or falls.

  That is, if the coil spring 40 connects the first locking member 41a and the second locking member 41b, the end of the belt portion 34 provided with the second locking member 41b is: Since it is located on the inner side of the second locking member 41b, it faces in the direction of the casing (see FIG. 2) 32, but the end of the belt portion 34 provided with the first locking member 41a is Since it exists outside the one locking member 41a, it naturally faces the outer side of the casing 32. With such a configuration, the electric wire portion 36 may interfere with or come into contact with the coil spring 40. It will be prevented before it happens.

  FIG. 4 is a control block diagram of the present invention, in which the sensor unit 45, the power supply unit 50 that supplies power, and the operation unit 55 that can operate the air conditioner are provided at the input end of the control unit 46 of the air conditioner. Are concatenated.

  An output end of the control unit 46 includes a heater operating unit 60 that operates the heater 33, a compressor driving unit 65 that drives the compressor, an indoor fan driving unit 70 that operates the indoor fan of the indoor unit, and an outdoor unit. An outdoor fan driving unit 75 for operating the outdoor fan of the machine is connected.

  Therefore, if information on the characteristics of the refrigerant such as the refrigerant temperature and pressure inside the compressor sensed by the sensor unit 45 is input to the control unit 46, the control unit 46 compresses based on such information. It is checked whether the refrigerant flowing into the machine is in the liquid refrigerant state. If it is determined that the refrigerant is in the liquid refrigerant state, the heater 33 is operated to vaporize the liquid refrigerant, thereby compressing the liquid refrigerant. It can prevent abnormal operation or damage of the machine.

  Hereinafter, the process of mounting the heater and sensor unit of the present invention and the operation of the heater and sensor unit will be described.

  2 and 3, the lower peripheral surface of the compressor 30 is circled by the heater 33, and the hooks 40a and 40b of the coil spring 40 are connected to the first and second locking members 41a and 41b. If this is the case, the heater 33 is firmly fixed to the outer peripheral surface of the compressor 30 and does not fall down due to the elastic restoring force of the coil spring 40 while the interval between the end portions of the belt portion 35 is narrowed. It will be.

  In this state, if the sensor unit 45 is inserted and fixed in the insertion hole 48 provided between the heating wire 35 and the second fixing member 41b, the heater 30 and the compressor 30 are connected to the compressor 30. The mounting of the sensor unit 45 is completed.

  In this state, since the first locking member 41a is attached to the inner surface of the belt portion 34 at the portion where the electric wire portion 36 is connected, the first locking member 41a is fixed over the first locking member 41a. Contact or interference with the coil spring 40 is prevented, and cutting or damage of the electric wire portion 36 due to such interference or contact is prevented.

  FIG. 5 illustrates an air conditioner equipped with a heater and a sensor unit according to the present invention. In the outdoor air, the compressor 30 and the refrigerant flowing into the compressor 30 are converted into a liquid refrigerant and a gaseous refrigerant. An accumulator 103 for separation, a four-way valve 105 for adjusting the flow of refrigerant discharged from the compressor 30, an outdoor heat exchanger 107 connected to the four-way valve 105, and the outdoor heat exchanger 107 for sucking external air; Also, an outdoor blower fan 109 to be discharged and an expansion valve 111 for decompressing and expanding the refrigerant that has passed through the outdoor heat exchanger 107 are provided.

  The indoor unit 120 is provided with an indoor heat exchanger 122 and an indoor fan 125 that causes the indoor heat exchanger 122 to suck air.

  Therefore, when the air conditioner performs a cooling action, if the compressor 30 operates and compresses the refrigerant at high temperature and high pressure, the compressed high temperature and high pressure refrigerant is condensed through the outdoor heat exchanger 107 and condensed refrigerant. Is expanded under reduced pressure through the expansion valve 111 to become a low-temperature liquid refrigerant.

  Thereafter, the refrigerant discharged from the expansion valve 111 flows into the indoor heat exchanger 125 and evaporates while exchanging heat with the indoor air. The evaporated refrigerant is a liquid state refrigerant and a gaseous state refrigerant in the accumulator 103. And the refrigerant in the gas state flows into the compressor 30 again.

  However, after the operation of such an air conditioner is stopped, the temperature of the compressor 30 is lowered, and thereby liquid refrigerant may flow into the compressor 30. If the compressor 30 is driven in a state where the refrigerant has flowed in, a large resistance is generated in driving the device inside the compressor 30 and eventually the compressor 30 may be abnormally operated. There is sex.

  Therefore, if the sensor unit 45 measures the refrigerant temperature and refrigerant pressure inside the compressor 30, and such refrigerant temperature and pressure information is transmitted to the control unit (see FIG. 4) 46, Based on such information, the control unit 46 determines whether the state of the refrigerant is gaseous or liquid.

  If the state of the refrigerant is determined to be gaseous, a power source is applied to the heating wire 35 of the heater 33 to generate heat and vaporize the liquid refrigerant to convert it into a gaseous state.

It is a side view which shows the prior art. It is a side view which shows the heater and sensor part which concern on this invention. It is a perspective view which shows the heater and sensor part which concern on this invention. It is a control block diagram of the present invention. It is the schematic of the air conditioner provided with the heater and sensor part by this invention.

Explanation of symbols

33 Heater 34 Belt portion 35 Heating wire 36 Electric wire portion 40 Coil springs 41a and 41b First and second locking members 45 Sensor portion 48 Insertion hole

Claims (14)

A compressor casing;
A sensor part in contact with the outer peripheral surface of the compressor casing;
A heater that surrounds an outer peripheral surface of the compressor casing and vaporizes liquid refrigerant flowing into the compressor;
A sensor installation unit provided in the heater, and provided with the sensor unit;
The compressor characterized by including. The heater includes a belt portion surrounding an outer peripheral surface of the compressor casing;
A heating wire received in the belt portion,
2. The sensor part installation part according to claim 1, wherein the sensor part installation part is provided at one end of the belt part and includes an insertion hole in which the sensor part is inserted and fixed apart from the heating wire. The compressor described.   The length of the belt part is smaller than the circumference of the compressor casing, and both ends of the belt part are connected to both ends of the belt part so that the belt can be fixed to the outer circumference of the casing. The compressor according to claim 2, wherein the engaging member is provided with a locking member. A first locking member is provided at one end of the belt portion,
A second locking member is provided at the other end of the belt portion,
The said 1st latching member is installed in the inner surface of the said belt part, The said 2nd latching member is provided in the outer surface of the said belt part, and is provided so that it may mutually pass. The compressor described. A wire portion connected to the heating wire and extending to the outside of the belt portion;
The wire portion is provided separately from the first locking member to which the connection member is fixed so as to prevent interference with the connection member. 4. The compressor according to 4.   The compressor according to claim 4, wherein the insertion hole is provided between the heating wire and the second locking member.   The compressor according to claim 3, wherein the connecting member is constituted by a coil spring having locking hooks at both ends. A sensor unit in contact with the outer peripheral surface of the compressor casing;
A belt part in which the sensor part is inserted and surrounds an outer peripheral surface of the compressor casing;
A heater for a compressor, comprising a heating wire that is received by an inner surface of the belt portion and heats the compressor casing to vaporize a refrigerant.   The compressor heater according to claim 8, wherein the belt portion is provided with an insertion hole into which the sensor portion is inserted and fixed.   The length of the belt part is shorter than the outer periphery of the compressor casing, and the belt part is connected to both ends of the belt part to fix the belt part to the outer periphery of the compressor casing. The heater for a compressor according to claim 8, wherein the connecting member is connected. The locking member is provided at one end portion of the belt portion, and the first locking member on which one end portion of the connecting member is applied, and the other end portion of the connecting member is provided on the other end portion of the belt portion. Including the second locking member,
11. The compressor heater according to claim 10, wherein the first locking member is provided on an inner surface of the belt portion, and the second locking member is provided on an outer surface of the belt portion. The belt portion is provided with an electric wire portion for supplying electricity to the heating wire,
The heater for a compressor according to claim 11, wherein the electric wire portion is provided apart from the first locking member so as not to interfere with the connecting member.   The heater for a compressor according to claim 11, wherein the insertion hole is provided between the heating wire and the second locking member.   The heater for a compressor according to claim 10, wherein the connecting member is constituted by a coil spring provided with locking hooks at both ends.

Images