CN1110227C - Lighting device for showcase - Google Patents

Lighting device for showcase Download PDF

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Publication number
CN1110227C
CN1110227C CN 95105299 CN95105299A CN1110227C CN 1110227 C CN1110227 C CN 1110227C CN 95105299 CN95105299 CN 95105299 CN 95105299 A CN95105299 A CN 95105299A CN 1110227 C CN1110227 C CN 1110227C
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CN
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power factor
stabilizer
capacitor
low power
lighting
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CN 95105299
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Chinese (zh)
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CN1135706A (en )
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近藤达夫
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中野冷机株式会社
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Abstract

本发明揭示一种使用低功率因数稳定器、谋求提高起动电路的功率因数,从而实现廉价、小型化的低温保存冷藏食品、生鲜食品等商品的开放式展示柜的照明装置。 The present invention discloses a stabilizer using a low power factor, the power factor be improved starting circuit, thereby achieving low cost, miniaturization of the lighting device Cryopreservation open refrigerated food display case, fresh food and other goods. 荧光灯(L)的起动电路使用低功率因数稳定器(ST),为了改善功率因数,安装与该稳定器(ST)的电源E并联的改善功率因数用的电容C。 Fluorescent lamp (L), a starting circuit using a low power factor stabilizer (ST), in order to improve power factor, power source E is mounted in parallel with the stabilizer (ST) of the power factor improving capacitor C. 结果,总电流减小,只要花比较便宜的电容器费用即可,店铺用的电线也可以不必太粗,断路器的容量也可以减小。 As a result, the total current is reduced, as little cheaper cost capacitor can shop with wires can not be too thick, the capacity of the circuit breaker can be reduced.

Description

展示柜照明装置 Display case lighting device

技术领域 FIELD

本发明是关于食品店铺等低温存放、陈列冷藏食品、生鲜食品等商品的开放式展示柜的照明装置的发明,详细地说,是关于使用低功率因数型稳定器谋求提高起动电路的功率因数的开放式展示柜照明装置。 The present invention relates to low-temperature storage food store or the like, an illumination device according to the invention displays an open refrigerated food display cabinets, fresh food and other goods, and more particularly, relates to a low power factor type stabilizer power factor be improved starting circuit the open display case lighting.

背景技术 Background technique

图4是表示一向用于开放式展示柜中的荧光灯电路中最一般的、简单的基本电路,扼流线圈与荧光灯L串联连接、经过荧光灯L的灯丝,有起动用的开关S。 FIG 4 is a diagram showing an open showcase has been used in the most general circuit of a fluorescent lamp, a simple basic circuit, the choke coil L is connected in series with the fluorescent lamp, the fluorescent lamp filament through L, starting with a switch S. 而且,与开关S并联(也与荧光灯L并联)连接着防止噪声用的电容C0(0.01~0.006μF),通常使用上述电容和开关构成一体的辉光起动器。 Further, in parallel with the switch S (and in parallel with the fluorescent lamp L) is connected to the noise preventing capacitor C0 (0.01 ~ 0.006μF), the capacitor and a switch commonly used integral glow starter.

起动用开关S一闭合、灯丝得到预热后,该开关断开、开关S的两端上产生冲击电压使荧光灯点亮。 A starter switch S is closed, preheating the filaments obtained, the switch is turned off, a surge voltage is generated on both ends of the fluorescent lamp lighting switch S.

那时维持荧光灯L起辉必要的电源电压通常是灯管电压的2倍。 Ignition time necessary to maintain the fluorescent lamp L is usually 2 times the supply voltage of the lamp voltage. 例如20W、15W的荧光灯,该电压约为55V,10W的荧光灯则为50V,因而其上加有100V的电源电压。 Such as fluorescent 20W, 15W, and the voltage is about 55V, 10W fluorescent lamp was 50V, which is supplied with power and thus voltage of 100V.

这里,荧光灯在起辉时几乎可等效置换成电阻分量,因而,图4电路中的输入功率因数如下式(1)所示,大致为0.5~0.55,是50~55%的低功率因数型。 Here, when the fluorescent lamp ignition almost equivalent resistance component is replaced, therefore, the input power factor circuit of Figure 4 in the following formula (1), is approximately 0.5 to 0.55, is 50 to 55% of low power factor type .

CosΦ=V1a/Vs=灯管电压/电源电压=0.5~0.55……(1)像这样,在图4的一般电路中,使荧光灯起动时的输入功率因数为0.5~0.55,效率低(无功电流大)。 CosΦ = V1a / Vs = the lamp voltage / supply voltage = 0.5 to 0.55 ...... (1) Thus, in the general circuit of FIG. 4, when the input power factor of the fluorescent lamp starter of 0.5 to 0.55, the low efficiency (Reactive current is large). 在设置数十个展示柜的另售店铺中,每个展示柜使用多支荧光灯,荧光灯总数可达数百支,由于功率因数低,存在无功电流,所以总电流变得非常大。 Set dozens of shops display case sold separately, each display cabinets use the multi-fluorescent lamps, fluorescent lamps up to total hundreds of branches, due to the low power factor, the presence of reactive current, so the total current becomes very large. 于是,店铺拉的电线要用得粗,断路器的容量也要大,这些问题就产生了。 So, pull the wire should be used in the shop thick, the capacity of the circuit breaker should be large, these problems arise.

为了解决这些问题,照明行业也研制了改善输入功率因数本身的高功率因数型稳定器。 To solve these problems, the lighting industry has also been developed to improve the input power factor is itself a high power factor type stabilizer. 但是,使用高功率因数稳定器,成本非常高,而且又是大型部件,像展示柜那样一柜多灯(8英尺长的柜子平均12支),使用稳定器时,安装空间也是个大问题。 However, using a high power factor of the stabilizer, the cost is very high, and it is the major component, like a display cabinet as a cabinet multi-lamp (cabinet 8 feet long average 12), the use of the stabilizer, the installation space is also a big problem.

发明内容 SUMMARY

因此,本发明的目的在于,提供廉价、小型、安装于展示柜时不受空间制约的展示柜照明装置,其特征在于,为了得到必要的次级电压,使用低功率因数型稳定器,即自耦变压器使电容减小,同时,设置磁分路,变压器的次级线圈兼起扼流线圈的作用,而且与电源并联地设置功率因数改善电容,以此形成功率因数得以改善的电路(高功率因数型电路)。 Accordingly, an object of the present invention is to provide an inexpensive, compact, the lighting apparatus when the display case to display case is mounted by space constraints, characterized in that, in order to obtain the necessary secondary voltage, low power factor type stabilizer, i.e. from transformer coupled capacitance are reduced, a magnetic shunt, and the transformer secondary winding acts as a choke coil, and disposed in parallel with the power source power factor correction capacitor, thereby forming a circuit power factor is improved (high power factor type circuit).

为了达到所述目的,在本发明中,安装用来照明贮藏室的多支照明灯的多级开放式展示柜具有如下特征,所述照明灯的起动电路使用低功率因数稳定器,为了改善功率因数,与低功率因数稳定器的电源并联安装电容器。 In order to achieve the above object, in the present invention, the mounting for the illumination lamp storage compartment multibranched multistage open showcase has the feature, the illumination lamp starting circuit using a low power factor stabilizer, to improve the power factor, low power factor power supply in parallel with the stabilizer mount capacitors. 而且,还具有如下特征,改善功率因数用的电容,安装于照明开关的次级侧的展示柜主体上,或者,为了得到低功率因数稳定器起动照明灯并使其维持起辉所需的次级电压使用自耦变压器,减小电容,同时,设置磁分路、使变压器的次级线圈同时作为扼流圈起作用,实现小型化。 Further, also has the following characteristics, improving the power factor of the capacitor, the secondary side of the showcase body is attached to the light switch, or, in order to obtain a low starting power factor stabilizer lamp ignition and allowed to maintain the desired times autotransformer voltage level, decrease the capacitance, while a magnetic shunt, while the secondary coil of the transformer functions as a choke coil, miniaturization.

使用上述结构,由于稳定器本身是低功率因数型的,所以价格低,而且小型,安装于展示柜时不受空间限制。 With the above construction, since the stabilizer itself is a type of low power factor, the price is low, and small when attached to the showcase restricted by space.

而且,选定与用于展示柜的照明灯的数目相称的电容后,只要把该电容与电源并联(于照明开关的次级一侧)安装,功率因数就能改善,可得到与使用高功率因数型稳定器时相同的输入功率因数。 Further, the number of the selected lamp for the display case commensurate capacitance, as long as the power supply in parallel with the capacitance (the secondary side of the lighting switch) installed, can improve the power factor can be obtained with a high power the same factor when the input power factor type stabilizer.

附图说明 BRIEF DESCRIPTION

图1是表示使用本发明的多级开放式展示柜的一个例子的剖面的侧面图。 FIG. 1 is a side view cross section of an example of a multi-stage open showcase of the present invention is used.

图2是使用本发明的低功率因数型稳定器谋求高输出功率因数的起动电路的基本电路图。 FIG 2 is a low power factor type stabilizer basic circuit diagram of the present invention to seek the starting circuit a high output power factor.

图3是把使用本发明的低功率因数型稳定器谋求提高功率因数的起动电路应用于使用多支荧光灯的多级开放式展示柜时的电路图。 FIG 3 is the use of the present invention, low power factor type stabilizer circuit diagram when seeking to improve the power factor of the starting circuit is applied using a multi-stage multi-branching fluorescent open showcase.

图4是已有的起动电路的基本电路图。 FIG 4 is a basic circuit diagram of a conventional starting circuit.

具体实施方式 detailed description

下面根据图1至图3对本发明的一实施例加以说明。 3 will be described below an embodiment of the invention according to FIGS. 1 to FIG.

首先,图1是表示使用本发明的照明装置的多级开放式展示柜的一个例子的剖面侧面图。 First, FIG. 1 is a sectional view of an example of multi-level open showcase lighting apparatus of the present invention using a side view. 低温存放、陈列冷藏食品、生鲜食品等商品于贮藏室内的开放式展示柜1是整体成形做成的、前面敞开成“”字形的外壳2、内部充填隔热材料而成的,其内侧安装有内面板3,在外壳2与内部面板3之间形成冷气循环通道4。 Low-temperature storage, display refrigerated foods, fresh foods and other goods in the storage compartment of the open showcase 1 is made of integrally formed, an open front to "2, made of heat insulating material filling the interior, which is mounted inside the housing-shaped" an inner panel 3, the cool air circulation passage 4 is formed between the outer shell 2 and the inner panel 3.

在前述外壳2的上部前端,内部面板3的天花板部份设置冷气吹出口5,冷气经该出口换向朝下吹出、形成气帘,由此吹出、吹向开放式展示柜1内的冷气经设于下部前端的吸入口6进入通道4内。 In the upper portion of the front end of the housing 2, the inner portion of the ceiling panel 3 is provided cold air outlet 5, the cool air blown out through the outlet to change down, a gas curtain, thereby blowing, blowing cool air through the open showcase 1 provided in to the lower tip of the suction port 6 into the channels 4. 在下部的通道4内,设置鼓风机7及将该鼓风机7输送的冷气再冷却的冷却器8,该冷气由鼓风机7经通道4再次从吹出口5吹出。 4 in the lower channel, a blower fan 7 and the cold air conveyed 7 recooled cooler 8, the cold air by the blower 4 through the passage 7 from the outlet port 5 is blown out again. 借助于这冷气循环、配置于开放式展示柜1的贮货室9内的陈列架10、10、…和底台11上的商品(未图示出)保持低温。 This air circulation by means, disposed in the open showcase cargo storage compartment 10, 10 in the display shelf 91, and 11 ... on the goods and the bottom stage (not shown) to maintain a low temperature. 而且,为了使贮藏室9得以照明,该多级开放式展示柜1中,在内部面板3的天花板部和陈列架10、10、…的前端下侧安装着多支荧光灯L,L,…。 Further, in order to illuminate the storage compartment 9, in the multi-stage open showcase 1, at the front end of the ceiling portion inner panel 3 and the display shelves 10, 10, ... of the multi-branched side mounted fluorescent L, L, ....

于是,在本实施例的照明装置的基本电路中,如图2所示,在为了得到必要的次级电压使用自耦变压器T、减小电容的同时,设置磁分路,使变压器T的次级线圈T2也兼有扼流圈的作用,以此谋求装置小型化。 Thus, in the basic circuit of this embodiment of the illumination device, shown in Figure 2, in order to obtain the necessary use of the secondary voltage autotransformer T, capacitance reduction, a magnetic shunt, so that secondary of the transformer T choke coil T2 is also the role of both, in order to seek miniaturization of the device. 也就是说,本实施例中,荧光灯L的起动电路中,由初级线圈T1以及次级线圈T2构成的自耦变压器和安装于这初级线圈T1及次级线圈T2之间的磁分路P构成低功率因数稳定器ST,为了改善功率因数,与该低功率因数稳定器ST的电源E并联安装着容量大的改善功率因数用的电容C。 That is, in this embodiment, the fluorescent lamp L in the starting circuit, autotransformer consisting of a primary coil and a secondary coil T1 and T2 constituting the magnetic shunt mounted to P between the primary coil and the secondary coil T2 is T1 stabilizer ST low power factor, to improve the power factor of the power supply in parallel with the low power factor of the stabilizer ST E mounted large capacitance of the power factor improving C. 于是该低功率因数稳定器ST(变压器T)与荧光灯L的灯丝成串联连接,而且在该荧光灯L上连接着起动器G。 So the low power factor stabilizer ST (transformer T) of the fluorescent lamp L is connected in series with the filament, and the starter is connected in the fluorescent lamp L G.

该起动器G是与图4所示的已有的例子的起辉用开关S与防止噪声用的电容C0(0.01~0.006μf)并连接成一体的起动器相同的,起动器一通电,灯丝预热后,起动器G产生的冲击电压就使荧光灯L点亮。 The starter G is a conventional example shown in FIG. 4 with the ignition switch S and the noise preventing capacitor C0 (0.01 ~ 0.006μf) and integrally connected to the same starter, the starter energizing a filament after preheating, G starter surge voltage generated on the fluorescent lamp L lit. 而且,在变压器式的情况下,电容器电压由变压器的线圈放电,所以不需要放电电阻。 Further, in the transformer, the capacitor voltage is discharged by the winding of the transformer, so no discharge resistor.

但是,在图1所示的多级开放式展示柜的情况下,特别是使用许多的荧光灯L,使用高功率因数型稳定器提高功率因数,价格就变得很高。 However, in case of a multi-stage open showcase shown in FIG. 1, in particular the use of many fluorescent lamp L, a high power factor type stabilizer improve the power factor, the price becomes high. 因此,如图3所示,使用低功率因数稳定器ST,与电源E并联(于安装在各展示柜的照明开关LS的次级侧)安装电容量和荧光灯L的数目相配的用于改善功率因数的电容,于是功率因数得以改善,达到像使用高功率因数型稳定器时一样的输入功率因数。 Thus, using a low power factor stabilizer ST, shown in Figure 3 in parallel with the power source E (in the illumination switch is mounted on the secondary side of each display case LS) L is the number of installed capacity and to improve the power matching fluorescent lamp factor capacitor, so the power factor is improved, as when used to achieve high power factor type stabilizer as input power factor. 因此,只要有比较便宜的电容的费用就够了,可以有效地减低成本和使装置小型化。 Therefore, as long as the capacitance of the cost of cheaper enough, it can effectively reduce the cost and size of the device. 附带说明,安装12支40瓦的荧光灯的8英尺展示柜平均每台、在电源为1Φ100V的稳定器的情况下,低功率因数的电流值是11.2A,而功率因数改善后的电流值为6.7A(使用两个100μf的电容)。 Incidentally, the mounting 12 40-watt fluorescent average of eight feet each showcase, when the power source is 1Φ100V stabilizer, the current value of the low power factor is 11.2 A, and the current value of power factor improvement 6.7 a (100μf the two capacitive). 而且,在电源为1Φ200V的稳定器的情况下,低功率因数的电流值为5.04A,而功率因数改善后的电流值为3.31A(使用两个18uf的电容)。 Further, in a case where the power source is 1Φ200V stabilizer, low power factor current value 5.04A, and the current value of power factor improvement 3.31a (18uf the two capacitive). 而且在图3中,荧光灯L与起动器G的电路结构与所述图2的例相同。 Also in FIG. 3, the circuit configuration of FIG fluorescent lamp starter G and L 2 is the same embodiment.

如上所述,组成高功率因数电路时的电容量,可以用提高加在电容上的电压的办法来减小,但在本实施例中,反而选择大容量的电容与电源并联连接、使用电路简单的低功率因数稳定器。 As described above, the electric capacity of the high power factor circuit composition can be used to improve the voltage applied to the capacitor decreases to approach, but in the present embodiment, instead of selected large-capacity capacitor is connected in parallel with the power source, using a simple circuit the low power factor stabilizer. 而且,改善功率因数用的电容的安装位置、选择在安装于各展示柜中的照明开关的次级侧的展示柜主体上,从而可使用照明开关分别控制各展示柜的照明,同时低功率因数规格、高功率因数规格的选择变得简单易行。 Moreover, to improve the mounting position of the capacitance of the power factor, selected on the secondary side of the showcase body lighting switch is mounted to each of the display case, so that the switch can be controlled individually using the illumination display cabinet lighting, low power factor while specifications, high power factor standard of choice becomes easy.

如上所示,使用本发明的展示柜照明装置,由于稳定器本身是低功率因数型的,所以价格低、体积小,安装于展示柜时,不受空间限制。 As described above, display case lighting device of the present invention, the stabilizer itself is due to low power factor type, is low price, small size, is attached to the display cabinet, not restricted by space.

而且,选定与用于展示柜的照明灯数目相称的电容器后,只要把该电容器与电源并联(于照明开关的次级侧)安装,功率因数就能改善、可得到像使用高功率因数型稳定器时那样的输入功率因数。 Further, after the selected number of lighting for display cases commensurate capacitor (the secondary side of the lighting switch) as long as the capacitor installed in parallel with the power supply, the power factor can be improved, it can be obtained as a high power factor type when the input power factor as the stabilizer. 其结果是,总电流变小,只要花费比较便宜的电容器费用就够了,店铺使用的电线线径也不必太粗,而且断路器的容量也可以减小,因而可以大幅度削减工作现场的电气施工费用。 As a result, the total current is small, as long as the cost is cheaper capacitors costs enough, wire diameter shops do not have to use too thick, and the capacity of the circuit breaker can be reduced, which can greatly reduce electrical work site construction costs.

Claims (2)

  1. 1.一种展示柜照明装置,用于安装多支照明灯的多级开放式展示柜中照明贮货室,其特征在于,前述照明灯的起动电路使用低功率因数型稳定器,为了改善功率因数,与该低功率因数稳定器的电源并联安装电容器;所述低功率因数稳定器,为了得到维持照明灯起辉所必要的次级电压,使用自耦变压器,使电容减小,同时在自耦变压器初级线圈及次级线圈之间设置磁分路,使变压器的次级线圈兼有扼流线圈的作用。 A display case lighting device for a multi-level open showcase lighting reservoir mounting chamber multibranched cargo lights, wherein the illumination lamp starting circuit using a low power factor type stabilizer, to improve the power factor, the power supply mounted in parallel with the capacitor of the low power factor of the stabilizer; low power factor of the stabilizer, the lamp is maintained in order to obtain necessary ignition secondary voltage, an auto-transformer, the capacitor is reduced, while since the a magnetic shunt between the primary and secondary coils coupled transformer, the secondary winding of the transformer of the role of both the choke coil.
  2. 2.根据权利要求1所述的展示柜照明装置,其特征在于,所述改善功率因数用的电容器安装于照明用开关的次级侧的展示柜主体上。 2. The display case lighting apparatus according to claim 1, wherein said power factor improving capacitor mounted on the secondary side of the showcase body of the lighting switch.
CN 95105299 1995-05-11 1995-05-11 Lighting device for showcase CN1110227C (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473778A (en) * 1981-10-30 1984-09-25 Mitsubishi Denki Kabushiki Kaisha Discharge lamp starting device
CN87204714U (en) * 1987-10-24 1988-11-30 钟菊清 Soft starter for fluorescent lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4473778A (en) * 1981-10-30 1984-09-25 Mitsubishi Denki Kabushiki Kaisha Discharge lamp starting device
CN87204714U (en) * 1987-10-24 1988-11-30 钟菊清 Soft starter for fluorescent lamp

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