CN2414323Y

CN2414323Y - One-unit multi-purpose small window type air conditioner

Info

Publication number: CN2414323Y
Application number: CN99217450U
Authority: CN
Inventors: 马占林
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-30
Filing date: 1999-07-30
Publication date: 2001-01-10
Anticipated expiration: 2009-07-30

Abstract

The utility model relates to a domestic assembly of an air conditioner and a refrigerator, which is suitable for the refrigerated storage of food for a small room and a single person's life. The utility model is composed of an outdoor machine of an air conditioner, an indoor machine, a small refrigeration container, a compressor and a thermal electric expansion valve. The thermal electric expansion valve serves as a throttling device of the domestic assembly of an air conditioner and a refrigerator. One pipe is respectively led out from both sides of the expansion valve are respectively. Pipes are combined into one pipe and connected with a dry filter after passing through a nonreturn valve. Then the pipe is connected with a capillary to serve as the throttling device of the refrigeration container. In addition, one thermal electric expansion valve is installed on a pipeline between the indoor machine and a rour-way change valve to regulate the pressure of total return air under the refrigerating condition in order to ensure the low-temperature refrigeration of the refrigeration container.

Description

The small-sized window air conditioner of a tractor serves several purposes

The utility model relates to the domestic air conditioner, particularly window air conditioner of two refrigerating plants of a compressor holder and the mini-plant that refrigerating box is assembled into one.

Many kinds demand of air-conditioning makes Air-conditioner design more diversified.A patent of Patent Office of the People's Republic of China, number is 2251119 to disclose the assembly of a kind of refrigerator and air-conditioning, come with some shortcomings in this design practical application, air-conditioning and refrigerator can not independent operatings, required to reach temperature different for temperature and refrigerator due to the air-conditioning, can not be met simultaneously, on market, also be difficult in addition promoting.

The utility model provides a kind of convenient and practical air-conditioning refrigerator assembly, and not only refrigerating box energy independent operating, and refrigeration function satisfies the air-conditioning temperature requirement different with refrigerator simultaneously, and can control flexibly, and the utilization rate of whole refrigeration plant is improved.

The utility model is to realize like this, drawing capillary supply refrigerating box cold-producing medium in the middle of off-premises station and the indoor apparatus of air conditioner freezes, it is characterized in that: be to have adopted the thermal electric expansion valve 6 being convenient to control as throttling arrangement in the middle of off-premises station 2 and the indoor set 3, a pipe is respectively drawn respectively by the common device for drying and filtering 13 that inserts in a check valve 11,12 backs in the both sides of expansion valve 6, connect refrigeration capillary 14 then, as shown in the figure, the cold-producing medium that can both guarantee refrigerating box 4 like this under two kinds of operating modes of refrigeration and heating is supplied with.On the pipeline between indoor heat exchanger 3 and the four-way change-over valve 5 thermal electric expansion valve 9 is housed, regulates and control back pressure under the cooling condition, to guarantee refrigerating box 4 cryogenic refrigeration requirements.The keying of thermal electric expansion valve is regulated and is controlled by voltage, so come the Push And Release of control valve 6 by the supply voltage of valve 6, just can control opening and stopping of air-conditioning easily, and not influence the cold storage effect of refrigerating box 4.Regulate the cryogenic refrigeration that back pressure is beneficial to refrigerating box 4 when guaranteeing heating when standard-sized sheet and refrigeration by the Push And Release of Control of Voltage expansion valve 9.Annotate: the thermoelectric expansion can be looked into for the 292nd page by book " small-sized refrigerating device for cooling design guidance " (1998.8.ISBN7-111-06132-2 of China Machine Press).

The advantage of this design has: can both guarantee the temperature requirement of refrigerating box throughout the year, and not be subjected to the influence of air-conditioning start-stop.When disconnecting air-conditioning, be exactly a refrigerator, and can be directly outdoor the discharge of the heat in the refrigerating box, when dialling heating and isolated operation refrigerating box, it just can come heat indoor, and the energy is saved in energy economical operation like this.When winter heating, disconnect the power supply of four-way change-over valve 5 and close 6 frostings that just can remove off-premises station of expanding.Can control opening and stop of air-conditioning in addition flexibly and easily, and compact conformation, it is complete to take up an area of few function.

As shown in the figure: the keying state of expansion valve 6 is controlled by air-conditioning temperature controller 15, the program of no matter freezing or heating running, when indoor temperature reaches in the control range of design temperature, just disconnect the power supply of expansion valve 6, simultaneously, disappear for the power supply signal of compressor.At this moment air-conditioning quits work, and has only refrigerating box 4 working on, and compressor 1 power supply is supplied with signal and provided by refrigeration thermostat 16, has only when temperature control 15,16 reaches the temperature that sets simultaneously and just cuts power of compressor, and compressor 1 quits work.In case temperature control 15,16 one of them action are supplied with to the power supply of compressor 1 signal is provided, compressor is resumed work.Open expansion valve 6 again simultaneously when temperature control 15 actions, air-conditioning is started working.Expansion valve 9 is started working in the time of temperature control 16 actions, and the suction temperature size that its thermistor 10 detects refrigerating box 4 comes the open degree of variable expansion valve 9 to regulate total back pressure.When 16 measured temperatures when set point is following, temperature control 16 actions disconnect this road signal that the compressor power of running quickly is supplied with on one side, another side short circuit thermistor 10 makes expansion valve 9 standard-sized sheets, allows compressor provide cold-producing medium to freeze for to greatest extent indoor apparatus of air conditioner 3 and successfully fails back compressor.Expansion valve 9 is beneficial to the gas transmission of air-conditioning by the Control of Voltage standard-sized sheet during heating in addition.

Off-premises station because environment temperature is very low, so evaporating pressure is also very low, can guarantee the refrigerating box cryogenic refrigeration as evaporimeter during heating.

Dotted line is represented electric wire among the figure ,+,-contact of number expression control circuit power supply, the contact of the commutator of 3 expression changes in temperature conversions of A, B, C (A ', B ', C ').The time dial B point (and B, point) when refrigeration, the control circuit of expansion valve 6 adopts thermistor 7, surveys the suction temperature of indoor set 3, and is cut off according to indoor temperature or closed control circuit comes the Push And Release of control valve 6 by temperature controller 15; When dialling heating, commutator is dialled C point (and C ' point), and the control circuit of expansion valve 6 adopts thermistor 8, to survey the suction temperature of off-premises station 2, controls to adjust the open degree of expansion valve 6.

Claims

1, the air-conditioner of the off-premises station of domestic air conditioning and indoor set and a refrigerating box assembling, it is characterized in that: off-premises station and indoor set are by thermal electric expansion valve 6 throttlings, and its both sides are respectively drawn a pipe and are inserted device for drying and filtering 13 by being merged into a pipe behind the check valve 11,12 respectively, and connecing capillary then is refrigerating box 4 throttling feed flows; The other end of indoor apparatus of air conditioner 3 connects four-way change-over valve 5 after by a thermal electric expansion valve 9 again, or directly returns compressor.

2, air-conditioner according to claim 1 is characterized in that: the latus rectum of thermal electric expansion valve 9 is greater than the latus rectum of thermal electric expansion valve 6.

3, air-conditioner according to claim 1 is characterized in that: the temperature-sensing element 10 that thermal electric expansion valve 9 is adopted is semistors, and is tied on the return-air duct of refrigerating box 4.

4, air-conditioner according to claim 1 is characterized in that: when heating, cut off the power supply of four energy reversal valves 5, and close expansion valve 6 and give off-premises station 2 defrostings.