CN201004191Y

CN201004191Y - Auxiliary heat circuit for air conditioner

Info

Publication number: CN201004191Y
Application number: CNU2007200472525U
Authority: CN
Inventors: 张辉; 叶务占; 李文灿
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2007-01-06
Filing date: 2007-01-06
Publication date: 2008-01-09
Anticipated expiration: 2017-01-06

Abstract

The utility model relates to an air conditioner use heat assistant circuit, belonging to the electron electric appliance field. The circuit is formed by connecting a power source, a first relay, a temperature limiter, one or more heating component, a thermal link, a second relay in order; wherein the heating component is formed by serially connecting one or more PTC with one or more electric heating wire. When temperature and current is abnormal, the PTC, the temperature limiter and the thermal play a dual protection role to the inner component of an air conditioner. The characteristics of the utility model lie in that: when temperature and current is abnormal, the utility model is able to lower the inner temperature of an air conditioner, thus extending the service life of the inner component like a vane and a snail shell; and the PTC preprotects the air conditioner, thereby greatly improving the utilization time of the temperature limiter and the thermal link.

Description

Air conditioner is with assisting heater circuit

Technical field:

The utility model relates to the connecting circuit of electronic devices and components, specially refers to a kind of air conditioner of air-conditioning internal part of protecting with assisting heater circuit.

Background technology:

At present in the air conditioner in order to increase heating capacity, often all can heater members be installed, adopt electrical heating wire usually, the relay of adhesive electrical heating wire place control circuit in the time of winter heating on the evaporator next door, make electrical heating wire generate heat, thereby reach the effect that increases heating capacity.Excessive but if electrical heating wire produces heat, the air-conditioning temperature inside can sharply raise, and causes the temperature distortion of remaining part such as fan blade, spiral case etc. easily.Common in the past protection for the air-conditioning inner structure; be to have connected temperature limiter and thermal fuse-link in circuit, if temperature is too high, temperature limiter and thermal fuse-link will cut off the loop at electrical heating wire place; thereby reduce the air-conditioning internal temperature, reach the purpose of protection air-conditioning internal part.But when damage or quality problems appear in these two devices, be difficult to reach effect to the remaining part protection.

Summary of the invention:

The air conditioner that the purpose of this utility model is a kind of energy multiple protective air conditioner internal part is provided makes air-conditioning when utilizing heater members such as electrical heating wire to carry out auxiliary heating with auxilliary heater circuit, moves more reliable.Not only there are temperature limiter and thermal fuse-link that the air-conditioning internal part is protected in this circuit; adopt novel heat generating component simultaneously; this heat generating component is the composition of recoverable PTC and electrical heating wire; be connected in series or be connected in parallel between this PTC and the electrical heating wire, utilize the characteristic of PTC, when temperature raises; the PTC resistance increases; therefore the voltage at heater members two ends reduces, thereby has also reduced the heating power of heater members, and the air conditioner internal temperature is descended.And because PTC has ptc characteristics, even break down at fan electromotor, under the situation that air quantity reduces, the heating power of PTC can reduce at once, and thermal value reduces, and reduces the air-conditioning internal temperature.Even under the situation of temperature limiter and thermal fuse-link inefficacy, also can reach protection like this to air-conditioning inside miscellaneous part such as fan blade, spiral case etc.

The purpose of this utility model is achieved in that air conditioner is with assisting heater circuit, connected to form successively by power supply, first relay, temperature limiter, at least one heat generating component, thermal fuse-link, second relay, described heat generating component is that at least one PTC and at least one electrical heating wire are connected in series and form.

Its second is characterised in that: described heat generating component is that at least one PTC and at least one electrical heating wire are connected in parallel and form.

The utility model has the advantages that: (one), when the temperature anomaly situation appears in air-conditioning inside, can in time reduce the air-conditioning internal temperature, prolong the life-span of air-conditioning internal part greatly; (2), PTC protects earlier, can effectively prolong the service time of temperature limiter and thermal fuse-link.

Description of drawings:

Fig. 1 is that embodiment of the present utility model one system connects sketch;

Fig. 2 is that embodiment two system of the present utility model connects sketch.

Embodiment:

Embodiment one:

According to shown in Figure 1, air conditioner connects to form successively with auxilliary thermoelectric routing power 1, first relay 2, temperature limiter 3, heat generating component, thermal fuse-link 6, second relay 7, and heat generating component described in the present embodiment is that a recoverable PTC5 and an electrical heating wire 4 are connected in series and form.Air conditioner is stated circuit in the use and is assisted electrically heated the time, and above-mentioned heat generating component generally is installed in the leeward side of air-conditioner evaporator by erecting frame, and all the other components and parts are installed in the electrical box.When first relay 2 in the circuit and 7 adhesives of second relay, there is electric current to pass through in the electrical heating wire 4, produce heat, can increase the heating capacity of air conditioner.When excessive or air-conditioning internal temperature raises suddenly when electric current in the auxilliary heater circuit; can carry out duplicate protection to the air-conditioning internal part by this circuit: (1) is after the air-conditioning internal temperature raises; the PTC5 resistance increases; the voltage at electrical heating wire 4 two ends is reduced; thereby also reduced the thermal value of electrical heating wire, thereby reduced the air-conditioning internal temperature.If run into that air conditioner fan motor lost efficacy or inlet and outlet is stopped up by foreign matter or the relay adhesion of control electrical heating wire the time; because PTC has ptc characteristics; under the situation that air quantity reduces; the heating power of PTC also can reduce at once; thermal value reduces; make the air-conditioning internal temperature reduce,, also can reach protection the air-conditioning internal part even like this under the situation of temperature limiter and thermal fuse-link inefficacy.When (2) too high or electric current was excessive when temperature, temperature limiter 3 or thermal fuse-link 6 can in time cut off auxilliary hot loop, thereby reduce the air-conditioning internal temperature, reach the air-conditioning internal part is protected.Simultaneously, when carrying out the detection of temperature and current value, restorability PTC5 detects temperature and current value earlier, so just can improve the service time of temperature limiter 3 and thermal fuse-link 6 greatly, has also improved the reliability of electrical heating wire 4 work such as heater members such as grade simultaneously.

Embodiment two:

The difference of present embodiment and embodiment one maximum is: described heat generating component is that a recoverable PTC5 and an electrical heating wire 4 are connected in parallel and form.

What need indicate is that any parts that do not relate to basic structure and connected mode that the related personnel makes the utility model are replaced and also belonged to protection domain of the present utility model.

Claims

1, air conditioner is with assisting heater circuit, electrically connected successively by power supply (1), first relay (2), temperature limiter (3), at least one heat generating component, thermal fuse-link (6), second relay (7) and to form, it is characterized in that: described heat generating component is that at least one PTC (5) is connected in series with at least one electrical heating wire (4) and forms.

2, air conditioner according to claim 1 is characterized in that with auxilliary heater circuit: described heat generating component is that at least one PTC (5) is connected in parallel with at least one electrical heating wire (4) and forms.